diff options
| author | Paul Holzinger <pholzing@redhat.com> | 2021-09-13 18:48:48 +0200 |
|---|---|---|
| committer | Paul Holzinger <pholzing@redhat.com> | 2021-09-13 18:49:38 +0200 |
| commit | b0cbcd1d0943a0b34d54c58c475c8239a32e0a59 (patch) | |
| tree | f503a136b7ce4684a4adc1f4ec8c4d162259281b /vendor | |
| parent | 0f3d3bd21da0b67542c44c832f0e1642c5f639cf (diff) | |
| download | podman-b0cbcd1d0943a0b34d54c58c475c8239a32e0a59.tar.gz podman-b0cbcd1d0943a0b34d54c58c475c8239a32e0a59.tar.bz2 podman-b0cbcd1d0943a0b34d54c58c475c8239a32e0a59.zip | |
bump c/common to v0.44.0
Signed-off-by: Paul Holzinger <pholzing@redhat.com>
Diffstat (limited to 'vendor')
63 files changed, 5243 insertions, 4142 deletions
diff --git a/vendor/github.com/Microsoft/hcsshim/go.mod b/vendor/github.com/Microsoft/hcsshim/go.mod index 21640a6b9..8360b0a50 100644 --- a/vendor/github.com/Microsoft/hcsshim/go.mod +++ b/vendor/github.com/Microsoft/hcsshim/go.mod @@ -6,7 +6,9 @@ require ( github.com/Microsoft/go-winio v0.4.17 github.com/containerd/cgroups v1.0.1 github.com/containerd/console v1.0.2 - github.com/containerd/containerd v1.5.1 + github.com/containerd/containerd v1.4.9 + github.com/containerd/continuity v0.1.0 // indirect + github.com/containerd/fifo v1.0.0 // indirect github.com/containerd/go-runc v1.0.0 github.com/containerd/ttrpc v1.0.2 github.com/containerd/typeurl v1.0.2 @@ -19,6 +21,7 @@ require ( golang.org/x/sync v0.0.0-20201207232520-09787c993a3a golang.org/x/sys v0.0.0-20210324051608-47abb6519492 google.golang.org/grpc v1.33.2 + gotest.tools/v3 v3.0.3 // indirect ) replace ( diff --git a/vendor/github.com/Microsoft/hcsshim/go.sum b/vendor/github.com/Microsoft/hcsshim/go.sum index b7bede13f..8ad3a8b8f 100644 --- a/vendor/github.com/Microsoft/hcsshim/go.sum +++ b/vendor/github.com/Microsoft/hcsshim/go.sum @@ -1,779 +1,220 @@ bazil.org/fuse v0.0.0-20160811212531-371fbbdaa898/go.mod h1:Xbm+BRKSBEpa4q4hTSxohYNQpsxXPbPry4JJWOB3LB8= -cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw= -cloud.google.com/go v0.38.0/go.mod h1:990N+gfupTy94rShfmMCWGDn0LpTmnzTp2qbd1dvSRU= -cloud.google.com/go v0.44.1/go.mod h1:iSa0KzasP4Uvy3f1mN/7PiObzGgflwredwwASm/v6AU= -cloud.google.com/go v0.44.2/go.mod h1:60680Gw3Yr4ikxnPRS/oxxkBccT6SA1yMk63TGekxKY= -cloud.google.com/go v0.45.1/go.mod h1:RpBamKRgapWJb87xiFSdk4g1CME7QZg3uwTez+TSTjc= -cloud.google.com/go v0.46.3/go.mod h1:a6bKKbmY7er1mI7TEI4lsAkts/mkhTSZK8w33B4RAg0= -cloud.google.com/go v0.50.0/go.mod h1:r9sluTvynVuxRIOHXQEHMFffphuXHOMZMycpNR5e6To= -cloud.google.com/go v0.52.0/go.mod h1:pXajvRH/6o3+F9jDHZWQ5PbGhn+o8w9qiu/CffaVdO4= -cloud.google.com/go v0.53.0/go.mod h1:fp/UouUEsRkN6ryDKNW/Upv/JBKnv6WDthjR6+vze6M= -cloud.google.com/go v0.54.0/go.mod h1:1rq2OEkV3YMf6n/9ZvGWI3GWw0VoqH/1x2nd8Is/bPc= -cloud.google.com/go/bigquery v1.0.1/go.mod h1:i/xbL2UlR5RvWAURpBYZTtm/cXjCha9lbfbpx4poX+o= -cloud.google.com/go/bigquery v1.3.0/go.mod h1:PjpwJnslEMmckchkHFfq+HTD2DmtT67aNFKH1/VBDHE= -cloud.google.com/go/bigquery v1.4.0/go.mod h1:S8dzgnTigyfTmLBfrtrhyYhwRxG72rYxvftPBK2Dvzc= -cloud.google.com/go/datastore v1.0.0/go.mod h1:LXYbyblFSglQ5pkeyhO+Qmw7ukd3C+pD7TKLgZqpHYE= -cloud.google.com/go/datastore v1.1.0/go.mod h1:umbIZjpQpHh4hmRpGhH4tLFup+FVzqBi1b3c64qFpCk= -cloud.google.com/go/pubsub v1.0.1/go.mod h1:R0Gpsv3s54REJCy4fxDixWD93lHJMoZTyQ2kNxGRt3I= -cloud.google.com/go/pubsub v1.1.0/go.mod h1:EwwdRX2sKPjnvnqCa270oGRyludottCI76h+R3AArQw= -cloud.google.com/go/pubsub v1.2.0/go.mod h1:jhfEVHT8odbXTkndysNHCcx0awwzvfOlguIAii9o8iA= -cloud.google.com/go/storage v1.0.0/go.mod h1:IhtSnM/ZTZV8YYJWCY8RULGVqBDmpoyjwiyrjsg+URw= -cloud.google.com/go/storage v1.5.0/go.mod h1:tpKbwo567HUNpVclU5sGELwQWBDZ8gh0ZeosJ0Rtdos= -cloud.google.com/go/storage v1.6.0/go.mod h1:N7U0C8pVQ/+NIKOBQyamJIeKQKkZ+mxpohlUTyfDhBk= -dmitri.shuralyov.com/gpu/mtl v0.0.0-20190408044501-666a987793e9/go.mod h1:H6x//7gZCb22OMCxBHrMx7a5I7Hp++hsVxbQ4BYO7hU= -github.com/Azure/azure-sdk-for-go v16.2.1+incompatible/go.mod h1:9XXNKU+eRnpl9moKnB4QOLf1HestfXbmab5FXxiDBjc= -github.com/Azure/go-ansiterm v0.0.0-20170929234023-d6e3b3328b78/go.mod h1:LmzpDX56iTiv29bbRTIsUNlaFfuhWRQBWjQdVyAevI8= -github.com/Azure/go-autorest v10.8.1+incompatible/go.mod h1:r+4oMnoxhatjLLJ6zxSWATqVooLgysK6ZNox3g/xq24= -github.com/Azure/go-autorest v14.2.0+incompatible/go.mod h1:r+4oMnoxhatjLLJ6zxSWATqVooLgysK6ZNox3g/xq24= -github.com/Azure/go-autorest/autorest v0.11.1/go.mod h1:JFgpikqFJ/MleTTxwepExTKnFUKKszPS8UavbQYUMuw= -github.com/Azure/go-autorest/autorest/adal v0.9.0/go.mod h1:/c022QCutn2P7uY+/oQWWNcK9YU+MH96NgK+jErpbcg= -github.com/Azure/go-autorest/autorest/adal v0.9.5/go.mod h1:B7KF7jKIeC9Mct5spmyCB/A8CG/sEz1vwIRGv/bbw7A= -github.com/Azure/go-autorest/autorest/date v0.3.0/go.mod h1:BI0uouVdmngYNUzGWeSYnokU+TrmwEsOqdt8Y6sso74= -github.com/Azure/go-autorest/autorest/mocks v0.4.0/go.mod h1:LTp+uSrOhSkaKrUy935gNZuuIPPVsHlr9DSOxSayd+k= -github.com/Azure/go-autorest/autorest/mocks v0.4.1/go.mod h1:LTp+uSrOhSkaKrUy935gNZuuIPPVsHlr9DSOxSayd+k= -github.com/Azure/go-autorest/logger v0.2.0/go.mod h1:T9E3cAhj2VqvPOtCYAvby9aBXkZmbF5NWuPV8+WeEW8= -github.com/Azure/go-autorest/tracing v0.6.0/go.mod h1:+vhtPC754Xsa23ID7GlGsrdKBpUA79WCAKPPZVC2DeU= github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU= -github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo= -github.com/Microsoft/go-winio v0.4.11/go.mod h1:VhR8bwka0BXejwEJY73c50VrPtXAaKcyvVC4A4RozmA= -github.com/Microsoft/go-winio v0.4.14/go.mod h1:qXqCSQ3Xa7+6tgxaGTIe4Kpcdsi+P8jBhyzoq1bpyYA= -github.com/Microsoft/go-winio v0.4.15-0.20190919025122-fc70bd9a86b5/go.mod h1:tTuCMEN+UleMWgg9dVx4Hu52b1bJo+59jBh3ajtinzw= -github.com/Microsoft/go-winio v0.4.16-0.20201130162521-d1ffc52c7331/go.mod h1:XB6nPKklQyQ7GC9LdcBEcBl8PF76WugXOPRXwdLnMv0= -github.com/Microsoft/go-winio v0.4.16/go.mod h1:XB6nPKklQyQ7GC9LdcBEcBl8PF76WugXOPRXwdLnMv0= -github.com/Microsoft/go-winio v0.4.17-0.20210211115548-6eac466e5fa3/go.mod h1:JPGBdM1cNvN/6ISo+n8V5iA4v8pBzdOpzfwIujj1a84= -github.com/Microsoft/go-winio v0.4.17-0.20210324224401-5516f17a5958/go.mod h1:JPGBdM1cNvN/6ISo+n8V5iA4v8pBzdOpzfwIujj1a84= github.com/Microsoft/go-winio v0.4.17 h1:iT12IBVClFevaf8PuVyi3UmZOVh4OqnaLxDTW2O6j3w= github.com/Microsoft/go-winio v0.4.17/go.mod h1:JPGBdM1cNvN/6ISo+n8V5iA4v8pBzdOpzfwIujj1a84= -github.com/Microsoft/hcsshim v0.8.6/go.mod h1:Op3hHsoHPAvb6lceZHDtd9OkTew38wNoXnJs8iY7rUg= -github.com/Microsoft/hcsshim v0.8.7-0.20190325164909-8abdbb8205e4/go.mod h1:Op3hHsoHPAvb6lceZHDtd9OkTew38wNoXnJs8iY7rUg= -github.com/Microsoft/hcsshim v0.8.7/go.mod 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h1:yfXDCHCao9+ENCvLSE62v9VSji2MKu5jeNfTrofGhJc= diff --git a/vendor/github.com/Microsoft/hcsshim/hnsendpoint.go b/vendor/github.com/Microsoft/hcsshim/hnsendpoint.go index 408312672..9e0059447 100644 --- a/vendor/github.com/Microsoft/hcsshim/hnsendpoint.go +++ b/vendor/github.com/Microsoft/hcsshim/hnsendpoint.go @@ -7,6 +7,9 @@ import ( // HNSEndpoint represents a network endpoint in HNS type HNSEndpoint = hns.HNSEndpoint +// HNSEndpointStats represent the stats for an networkendpoint in HNS +type HNSEndpointStats = hns.EndpointStats + // Namespace represents a Compartment. type Namespace = hns.Namespace @@ -108,3 +111,8 @@ func GetHNSEndpointByID(endpointID string) (*HNSEndpoint, error) { func GetHNSEndpointByName(endpointName string) (*HNSEndpoint, error) { return hns.GetHNSEndpointByName(endpointName) } + +// GetHNSEndpointStats gets the endpoint stats by ID +func GetHNSEndpointStats(endpointName string) (*HNSEndpointStats, error) { + return hns.GetHNSEndpointStats(endpointName) +} diff --git a/vendor/github.com/Microsoft/hcsshim/internal/hns/hnsendpoint.go b/vendor/github.com/Microsoft/hcsshim/internal/hns/hnsendpoint.go index b36315a39..262714b4d 100644 --- a/vendor/github.com/Microsoft/hcsshim/internal/hns/hnsendpoint.go +++ b/vendor/github.com/Microsoft/hcsshim/internal/hns/hnsendpoint.go @@ -30,6 +30,7 @@ type HNSEndpoint struct { EnableLowMetric bool `json:",omitempty"` Namespace *Namespace `json:",omitempty"` EncapOverhead uint16 `json:",omitempty"` + SharedContainers []string `json:",omitempty"` } //SystemType represents the type of the system on which actions are done @@ -57,6 +58,18 @@ type EndpointResquestResponse struct { Error string } +// EndpointStats is the object that has stats for a given endpoint +type EndpointStats struct { + BytesReceived uint64 `json:"BytesReceived"` + BytesSent uint64 `json:"BytesSent"` + DroppedPacketsIncoming uint64 `json:"DroppedPacketsIncoming"` + DroppedPacketsOutgoing uint64 `json:"DroppedPacketsOutgoing"` + EndpointID string `json:"EndpointId"` + InstanceID string `json:"InstanceId"` + PacketsReceived uint64 `json:"PacketsReceived"` + PacketsSent uint64 `json:"PacketsSent"` +} + // HNSEndpointRequest makes a HNS call to modify/query a network endpoint func HNSEndpointRequest(method, path, request string) (*HNSEndpoint, error) { endpoint := &HNSEndpoint{} @@ -79,11 +92,27 @@ func HNSListEndpointRequest() ([]HNSEndpoint, error) { return endpoint, nil } +// hnsEndpointStatsRequest makes a HNS call to query the stats for a given endpoint ID +func hnsEndpointStatsRequest(id string) (*EndpointStats, error) { + var stats EndpointStats + err := hnsCall("GET", "/endpointstats/"+id, "", &stats) + if err != nil { + return nil, err + } + + return &stats, nil +} + // GetHNSEndpointByID get the Endpoint by ID func GetHNSEndpointByID(endpointID string) (*HNSEndpoint, error) { return HNSEndpointRequest("GET", endpointID, "") } +// GetHNSEndpointStats get the stats for a n Endpoint by ID +func GetHNSEndpointStats(endpointID string) (*EndpointStats, error) { + return hnsEndpointStatsRequest(endpointID) +} + // GetHNSEndpointByName gets the endpoint filtered by Name func GetHNSEndpointByName(endpointName string) (*HNSEndpoint, error) { hnsResponse, err := HNSListEndpointRequest() diff --git a/vendor/github.com/containerd/stargz-snapshotter/estargz/LICENSE b/vendor/github.com/containerd/stargz-snapshotter/estargz/LICENSE new file mode 100644 index 000000000..d64569567 --- /dev/null +++ b/vendor/github.com/containerd/stargz-snapshotter/estargz/LICENSE @@ -0,0 +1,202 @@ + + Apache License + Version 2.0, January 2004 + http://www.apache.org/licenses/ + + TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION + + 1. 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In no event and under no legal theory, + whether in tort (including negligence), contract, or otherwise, + unless required by applicable law (such as deliberate and grossly + negligent acts) or agreed to in writing, shall any Contributor be + liable to You for damages, including any direct, indirect, special, + incidental, or consequential damages of any character arising as a + result of this License or out of the use or inability to use the + Work (including but not limited to damages for loss of goodwill, + work stoppage, computer failure or malfunction, or any and all + other commercial damages or losses), even if such Contributor + has been advised of the possibility of such damages. + + 9. Accepting Warranty or Additional Liability. While redistributing + the Work or Derivative Works thereof, You may choose to offer, + and charge a fee for, acceptance of support, warranty, indemnity, + or other liability obligations and/or rights consistent with this + License. However, in accepting such obligations, You may act only + on Your own behalf and on Your sole responsibility, not on behalf + of any other Contributor, and only if You agree to indemnify, + defend, and hold each Contributor harmless for any liability + incurred by, or claims asserted against, such Contributor by reason + of your accepting any such warranty or additional liability. + + END OF TERMS AND CONDITIONS + + APPENDIX: How to apply the Apache License to your work. + + To apply the Apache License to your work, attach the following + boilerplate notice, with the fields enclosed by brackets "[]" + replaced with your own identifying information. (Don't include + the brackets!) The text should be enclosed in the appropriate + comment syntax for the file format. We also recommend that a + file or class name and description of purpose be included on the + same "printed page" as the copyright notice for easier + identification within third-party archives. + + Copyright [yyyy] [name of copyright owner] + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. diff --git a/vendor/github.com/containerd/stargz-snapshotter/estargz/build.go b/vendor/github.com/containerd/stargz-snapshotter/estargz/build.go new file mode 100644 index 000000000..708b26689 --- /dev/null +++ b/vendor/github.com/containerd/stargz-snapshotter/estargz/build.go @@ -0,0 +1,628 @@ +/* + Copyright The containerd Authors. + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. +*/ + +/* + Copyright 2019 The Go Authors. All rights reserved. + Use of this source code is governed by a BSD-style + license that can be found in the LICENSE file. +*/ + +package estargz + +import ( + "archive/tar" + "bytes" + "compress/gzip" + "fmt" + "io" + "io/ioutil" + "os" + "path" + "runtime" + "strings" + "sync" + + "github.com/containerd/stargz-snapshotter/estargz/errorutil" + "github.com/klauspost/compress/zstd" + digest "github.com/opencontainers/go-digest" + "github.com/pkg/errors" + "golang.org/x/sync/errgroup" +) + +type options struct { + chunkSize int + compressionLevel int + prioritizedFiles []string + missedPrioritizedFiles *[]string + compression Compression +} + +type Option func(o *options) error + +// WithChunkSize option specifies the chunk size of eStargz blob to build. +func WithChunkSize(chunkSize int) Option { + return func(o *options) error { + o.chunkSize = chunkSize + return nil + } +} + +// WithCompressionLevel option specifies the gzip compression level. +// The default is gzip.BestCompression. +// See also: https://godoc.org/compress/gzip#pkg-constants +func WithCompressionLevel(level int) Option { + return func(o *options) error { + o.compressionLevel = level + return nil + } +} + +// WithPrioritizedFiles option specifies the list of prioritized files. +// These files must be complete paths that are absolute or relative to "/" +// For example, all of "foo/bar", "/foo/bar", "./foo/bar" and "../foo/bar" +// are treated as "/foo/bar". +func WithPrioritizedFiles(files []string) Option { + return func(o *options) error { + o.prioritizedFiles = files + return nil + } +} + +// WithAllowPrioritizeNotFound makes Build continue the execution even if some +// of prioritized files specified by WithPrioritizedFiles option aren't found +// in the input tar. Instead, this records all missed file names to the passed +// slice. +func WithAllowPrioritizeNotFound(missedFiles *[]string) Option { + return func(o *options) error { + if missedFiles == nil { + return fmt.Errorf("WithAllowPrioritizeNotFound: slice must be passed") + } + o.missedPrioritizedFiles = missedFiles + return nil + } +} + +// WithCompression specifies compression algorithm to be used. +// Default is gzip. +func WithCompression(compression Compression) Option { + return func(o *options) error { + o.compression = compression + return nil + } +} + +// Blob is an eStargz blob. +type Blob struct { + io.ReadCloser + diffID digest.Digester + tocDigest digest.Digest +} + +// DiffID returns the digest of uncompressed blob. +// It is only valid to call DiffID after Close. +func (b *Blob) DiffID() digest.Digest { + return b.diffID.Digest() +} + +// TOCDigest returns the digest of uncompressed TOC JSON. +func (b *Blob) TOCDigest() digest.Digest { + return b.tocDigest +} + +// Build builds an eStargz blob which is an extended version of stargz, from a blob (gzip, zstd +// or plain tar) passed through the argument. If there are some prioritized files are listed in +// the option, these files are grouped as "prioritized" and can be used for runtime optimization +// (e.g. prefetch). This function builds a blob in parallel, with dividing that blob into several +// (at least the number of runtime.GOMAXPROCS(0)) sub-blobs. +func Build(tarBlob *io.SectionReader, opt ...Option) (_ *Blob, rErr error) { + var opts options + opts.compressionLevel = gzip.BestCompression // BestCompression by default + for _, o := range opt { + if err := o(&opts); err != nil { + return nil, err + } + } + if opts.compression == nil { + opts.compression = newGzipCompressionWithLevel(opts.compressionLevel) + } + layerFiles := newTempFiles() + defer func() { + if rErr != nil { + if err := layerFiles.CleanupAll(); err != nil { + rErr = errors.Wrapf(rErr, "failed to cleanup tmp files: %v", err) + } + } + }() + tarBlob, err := decompressBlob(tarBlob, layerFiles) + if err != nil { + return nil, err + } + entries, err := sortEntries(tarBlob, opts.prioritizedFiles, opts.missedPrioritizedFiles) + if err != nil { + return nil, err + } + tarParts := divideEntries(entries, runtime.GOMAXPROCS(0)) + writers := make([]*Writer, len(tarParts)) + payloads := make([]*os.File, len(tarParts)) + var mu sync.Mutex + var eg errgroup.Group + for i, parts := range tarParts { + i, parts := i, parts + // builds verifiable stargz sub-blobs + eg.Go(func() error { + esgzFile, err := layerFiles.TempFile("", "esgzdata") + if err != nil { + return err + } + sw := NewWriterWithCompressor(esgzFile, opts.compression) + sw.ChunkSize = opts.chunkSize + if err := sw.AppendTar(readerFromEntries(parts...)); err != nil { + return err + } + mu.Lock() + writers[i] = sw + payloads[i] = esgzFile + mu.Unlock() + return nil + }) + } + if err := eg.Wait(); err != nil { + rErr = err + return nil, err + } + tocAndFooter, tocDgst, err := closeWithCombine(opts.compressionLevel, writers...) + if err != nil { + rErr = err + return nil, err + } + var rs []io.Reader + for _, p := range payloads { + fs, err := fileSectionReader(p) + if err != nil { + return nil, err + } + rs = append(rs, fs) + } + diffID := digest.Canonical.Digester() + pr, pw := io.Pipe() + go func() { + r, err := opts.compression.Reader(io.TeeReader(io.MultiReader(append(rs, tocAndFooter)...), pw)) + if err != nil { + pw.CloseWithError(err) + return + } + defer r.Close() + if _, err := io.Copy(diffID.Hash(), r); err != nil { + pw.CloseWithError(err) + return + } + pw.Close() + }() + return &Blob{ + ReadCloser: readCloser{ + Reader: pr, + closeFunc: layerFiles.CleanupAll, + }, + tocDigest: tocDgst, + diffID: diffID, + }, nil +} + +// closeWithCombine takes unclosed Writers and close them. This also returns the +// toc that combined all Writers into. +// Writers doesn't write TOC and footer to the underlying writers so they can be +// combined into a single eStargz and tocAndFooter returned by this function can +// be appended at the tail of that combined blob. +func closeWithCombine(compressionLevel int, ws ...*Writer) (tocAndFooterR io.Reader, tocDgst digest.Digest, err error) { + if len(ws) == 0 { + return nil, "", fmt.Errorf("at least one writer must be passed") + } + for _, w := range ws { + if w.closed { + return nil, "", fmt.Errorf("writer must be unclosed") + } + defer func(w *Writer) { w.closed = true }(w) + if err := w.closeGz(); err != nil { + return nil, "", err + } + if err := w.bw.Flush(); err != nil { + return nil, "", err + } + } + var ( + mtoc = new(JTOC) + currentOffset int64 + ) + mtoc.Version = ws[0].toc.Version + for _, w := range ws { + for _, e := range w.toc.Entries { + // Recalculate Offset of non-empty files/chunks + if (e.Type == "reg" && e.Size > 0) || e.Type == "chunk" { + e.Offset += currentOffset + } + mtoc.Entries = append(mtoc.Entries, e) + } + if w.toc.Version > mtoc.Version { + mtoc.Version = w.toc.Version + } + currentOffset += w.cw.n + } + + return tocAndFooter(ws[0].compressor, mtoc, currentOffset) +} + +func tocAndFooter(compressor Compressor, toc *JTOC, offset int64) (io.Reader, digest.Digest, error) { + buf := new(bytes.Buffer) + tocDigest, err := compressor.WriteTOCAndFooter(buf, offset, toc, nil) + if err != nil { + return nil, "", err + } + return buf, tocDigest, nil +} + +// divideEntries divides passed entries to the parts at least the number specified by the +// argument. +func divideEntries(entries []*entry, minPartsNum int) (set [][]*entry) { + var estimatedSize int64 + for _, e := range entries { + estimatedSize += e.header.Size + } + unitSize := estimatedSize / int64(minPartsNum) + var ( + nextEnd = unitSize + offset int64 + ) + set = append(set, []*entry{}) + for _, e := range entries { + set[len(set)-1] = append(set[len(set)-1], e) + offset += e.header.Size + if offset > nextEnd { + set = append(set, []*entry{}) + nextEnd += unitSize + } + } + return +} + +var errNotFound = errors.New("not found") + +// sortEntries reads the specified tar blob and returns a list of tar entries. +// If some of prioritized files are specified, the list starts from these +// files with keeping the order specified by the argument. +func sortEntries(in io.ReaderAt, prioritized []string, missedPrioritized *[]string) ([]*entry, error) { + + // Import tar file. + intar, err := importTar(in) + if err != nil { + return nil, errors.Wrap(err, "failed to sort") + } + + // Sort the tar file respecting to the prioritized files list. + sorted := &tarFile{} + for _, l := range prioritized { + if err := moveRec(l, intar, sorted); err != nil { + if errors.Is(err, errNotFound) && missedPrioritized != nil { + *missedPrioritized = append(*missedPrioritized, l) + continue // allow not found + } + return nil, errors.Wrap(err, "failed to sort tar entries") + } + } + if len(prioritized) == 0 { + sorted.add(&entry{ + header: &tar.Header{ + Name: NoPrefetchLandmark, + Typeflag: tar.TypeReg, + Size: int64(len([]byte{landmarkContents})), + }, + payload: bytes.NewReader([]byte{landmarkContents}), + }) + } else { + sorted.add(&entry{ + header: &tar.Header{ + Name: PrefetchLandmark, + Typeflag: tar.TypeReg, + Size: int64(len([]byte{landmarkContents})), + }, + payload: bytes.NewReader([]byte{landmarkContents}), + }) + } + + // Dump all entry and concatinate them. + return append(sorted.dump(), intar.dump()...), nil +} + +// readerFromEntries returns a reader of tar archive that contains entries passed +// through the arguments. +func readerFromEntries(entries ...*entry) io.Reader { + pr, pw := io.Pipe() + go func() { + tw := tar.NewWriter(pw) + defer tw.Close() + for _, entry := range entries { + if err := tw.WriteHeader(entry.header); err != nil { + pw.CloseWithError(fmt.Errorf("Failed to write tar header: %v", err)) + return + } + if _, err := io.Copy(tw, entry.payload); err != nil { + pw.CloseWithError(fmt.Errorf("Failed to write tar payload: %v", err)) + return + } + } + pw.Close() + }() + return pr +} + +func importTar(in io.ReaderAt) (*tarFile, error) { + tf := &tarFile{} + pw, err := newCountReader(in) + if err != nil { + return nil, errors.Wrap(err, "failed to make position watcher") + } + tr := tar.NewReader(pw) + + // Walk through all nodes. + for { + // Fetch and parse next header. + h, err := tr.Next() + if err != nil { + if err == io.EOF { + break + } else { + return nil, errors.Wrap(err, "failed to parse tar file") + } + } + switch cleanEntryName(h.Name) { + case PrefetchLandmark, NoPrefetchLandmark: + // Ignore existing landmark + continue + } + + // Add entry. If it already exists, replace it. + if _, ok := tf.get(h.Name); ok { + tf.remove(h.Name) + } + tf.add(&entry{ + header: h, + payload: io.NewSectionReader(in, pw.currentPos(), h.Size), + }) + } + + return tf, nil +} + +func moveRec(name string, in *tarFile, out *tarFile) error { + name = cleanEntryName(name) + if name == "" { // root directory. stop recursion. + if e, ok := in.get(name); ok { + // entry of the root directory exists. we should move it as well. + // this case will occur if tar entries are prefixed with "./", "/", etc. + out.add(e) + in.remove(name) + } + return nil + } + + _, okIn := in.get(name) + _, okOut := out.get(name) + if !okIn && !okOut { + return errors.Wrapf(errNotFound, "file: %q", name) + } + + parent, _ := path.Split(strings.TrimSuffix(name, "/")) + if err := moveRec(parent, in, out); err != nil { + return err + } + if e, ok := in.get(name); ok && e.header.Typeflag == tar.TypeLink { + if err := moveRec(e.header.Linkname, in, out); err != nil { + return err + } + } + if e, ok := in.get(name); ok { + out.add(e) + in.remove(name) + } + return nil +} + +type entry struct { + header *tar.Header + payload io.ReadSeeker +} + +type tarFile struct { + index map[string]*entry + stream []*entry +} + +func (f *tarFile) add(e *entry) { + if f.index == nil { + f.index = make(map[string]*entry) + } + f.index[cleanEntryName(e.header.Name)] = e + f.stream = append(f.stream, e) +} + +func (f *tarFile) remove(name string) { + name = cleanEntryName(name) + if f.index != nil { + delete(f.index, name) + } + var filtered []*entry + for _, e := range f.stream { + if cleanEntryName(e.header.Name) == name { + continue + } + filtered = append(filtered, e) + } + f.stream = filtered +} + +func (f *tarFile) get(name string) (e *entry, ok bool) { + if f.index == nil { + return nil, false + } + e, ok = f.index[cleanEntryName(name)] + return +} + +func (f *tarFile) dump() []*entry { + return f.stream +} + +type readCloser struct { + io.Reader + closeFunc func() error +} + +func (rc readCloser) Close() error { + return rc.closeFunc() +} + +func fileSectionReader(file *os.File) (*io.SectionReader, error) { + info, err := file.Stat() + if err != nil { + return nil, err + } + return io.NewSectionReader(file, 0, info.Size()), nil +} + +func newTempFiles() *tempFiles { + return &tempFiles{} +} + +type tempFiles struct { + files []*os.File + filesMu sync.Mutex +} + +func (tf *tempFiles) TempFile(dir, pattern string) (*os.File, error) { + f, err := ioutil.TempFile(dir, pattern) + if err != nil { + return nil, err + } + tf.filesMu.Lock() + tf.files = append(tf.files, f) + tf.filesMu.Unlock() + return f, nil +} + +func (tf *tempFiles) CleanupAll() error { + tf.filesMu.Lock() + defer tf.filesMu.Unlock() + var allErr []error + for _, f := range tf.files { + if err := f.Close(); err != nil { + allErr = append(allErr, err) + } + if err := os.Remove(f.Name()); err != nil { + allErr = append(allErr, err) + } + } + tf.files = nil + return errorutil.Aggregate(allErr) +} + +func newCountReader(r io.ReaderAt) (*countReader, error) { + pos := int64(0) + return &countReader{r: r, cPos: &pos}, nil +} + +type countReader struct { + r io.ReaderAt + cPos *int64 + + mu sync.Mutex +} + +func (cr *countReader) Read(p []byte) (int, error) { + cr.mu.Lock() + defer cr.mu.Unlock() + + n, err := cr.r.ReadAt(p, *cr.cPos) + if err == nil { + *cr.cPos += int64(n) + } + return n, err +} + +func (cr *countReader) Seek(offset int64, whence int) (int64, error) { + cr.mu.Lock() + defer cr.mu.Unlock() + + switch whence { + default: + return 0, fmt.Errorf("Unknown whence: %v", whence) + case io.SeekStart: + case io.SeekCurrent: + offset += *cr.cPos + case io.SeekEnd: + return 0, fmt.Errorf("Unsupported whence: %v", whence) + } + + if offset < 0 { + return 0, fmt.Errorf("invalid offset") + } + *cr.cPos = offset + return offset, nil +} + +func (cr *countReader) currentPos() int64 { + cr.mu.Lock() + defer cr.mu.Unlock() + + return *cr.cPos +} + +func decompressBlob(org *io.SectionReader, tmp *tempFiles) (*io.SectionReader, error) { + if org.Size() < 4 { + return org, nil + } + src := make([]byte, 4) + if _, err := org.Read(src); err != nil && err != io.EOF { + return nil, err + } + var dR io.Reader + if bytes.Equal([]byte{0x1F, 0x8B, 0x08}, src[:3]) { + // gzip + dgR, err := gzip.NewReader(io.NewSectionReader(org, 0, org.Size())) + if err != nil { + return nil, err + } + defer dgR.Close() + dR = io.Reader(dgR) + } else if bytes.Equal([]byte{0x28, 0xb5, 0x2f, 0xfd}, src[:4]) { + // zstd + dzR, err := zstd.NewReader(io.NewSectionReader(org, 0, org.Size())) + if err != nil { + return nil, err + } + defer dzR.Close() + dR = io.Reader(dzR) + } else { + // uncompressed + return io.NewSectionReader(org, 0, org.Size()), nil + } + b, err := tmp.TempFile("", "uncompresseddata") + if err != nil { + return nil, err + } + if _, err := io.Copy(b, dR); err != nil { + return nil, err + } + return fileSectionReader(b) +} diff --git a/vendor/github.com/containerd/stargz-snapshotter/estargz/errorutil/errors.go b/vendor/github.com/containerd/stargz-snapshotter/estargz/errorutil/errors.go new file mode 100644 index 000000000..6de78b02d --- /dev/null +++ b/vendor/github.com/containerd/stargz-snapshotter/estargz/errorutil/errors.go @@ -0,0 +1,40 @@ +/* + Copyright The containerd Authors. + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. +*/ + +package errorutil + +import ( + "errors" + "fmt" + "strings" +) + +// Aggregate combines a list of errors into a single new error. +func Aggregate(errs []error) error { + switch len(errs) { + case 0: + return nil + case 1: + return errs[0] + default: + points := make([]string, len(errs)+1) + points[0] = fmt.Sprintf("%d error(s) occurred:", len(errs)) + for i, err := range errs { + points[i+1] = fmt.Sprintf("* %s", err) + } + return errors.New(strings.Join(points, "\n\t")) + } +} diff --git a/vendor/github.com/containerd/stargz-snapshotter/estargz/estargz.go b/vendor/github.com/containerd/stargz-snapshotter/estargz/estargz.go new file mode 100644 index 000000000..e997d9cce --- /dev/null +++ b/vendor/github.com/containerd/stargz-snapshotter/estargz/estargz.go @@ -0,0 +1,933 @@ +/* + Copyright The containerd Authors. + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. +*/ + +/* + Copyright 2019 The Go Authors. All rights reserved. + Use of this source code is governed by a BSD-style + license that can be found in the LICENSE file. +*/ + +package estargz + +import ( + "archive/tar" + "bufio" + "bytes" + "compress/gzip" + "crypto/sha256" + "fmt" + "hash" + "io" + "io/ioutil" + "os" + "path" + "sort" + "strings" + "sync" + "time" + + "github.com/containerd/stargz-snapshotter/estargz/errorutil" + digest "github.com/opencontainers/go-digest" + "github.com/pkg/errors" +) + +// A Reader permits random access reads from a stargz file. +type Reader struct { + sr *io.SectionReader + toc *JTOC + tocDigest digest.Digest + + // m stores all non-chunk entries, keyed by name. + m map[string]*TOCEntry + + // chunks stores all TOCEntry values for regular files that + // are split up. For a file with a single chunk, it's only + // stored in m. + chunks map[string][]*TOCEntry + + decompressor Decompressor +} + +type openOpts struct { + tocOffset int64 + decompressors []Decompressor + telemetry *Telemetry +} + +// OpenOption is an option used during opening the layer +type OpenOption func(o *openOpts) error + +// WithTOCOffset option specifies the offset of TOC +func WithTOCOffset(tocOffset int64) OpenOption { + return func(o *openOpts) error { + o.tocOffset = tocOffset + return nil + } +} + +// WithDecompressors option specifies decompressors to use. +// Default is gzip-based decompressor. +func WithDecompressors(decompressors ...Decompressor) OpenOption { + return func(o *openOpts) error { + o.decompressors = decompressors + return nil + } +} + +// WithTelemetry option specifies the telemetry hooks +func WithTelemetry(telemetry *Telemetry) OpenOption { + return func(o *openOpts) error { + o.telemetry = telemetry + return nil + } +} + +// A func which takes start time and records the diff +type MeasureLatencyHook func(time.Time) + +// A struct which defines telemetry hooks. By implementing these hooks you should be able to record +// the latency metrics of the respective steps of estargz open operation. To be used with estargz.OpenWithTelemetry(...) +type Telemetry struct { + GetFooterLatency MeasureLatencyHook // measure time to get stargz footer (in milliseconds) + GetTocLatency MeasureLatencyHook // measure time to GET TOC JSON (in milliseconds) + DeserializeTocLatency MeasureLatencyHook // measure time to deserialize TOC JSON (in milliseconds) +} + +// Open opens a stargz file for reading. +// The behaviour is configurable using options. +// +// Note that each entry name is normalized as the path that is relative to root. +func Open(sr *io.SectionReader, opt ...OpenOption) (*Reader, error) { + var opts openOpts + for _, o := range opt { + if err := o(&opts); err != nil { + return nil, err + } + } + + gzipCompressors := []Decompressor{new(GzipDecompressor), new(legacyGzipDecompressor)} + decompressors := append(gzipCompressors, opts.decompressors...) + + // Determine the size to fetch. Try to fetch as many bytes as possible. + fetchSize := maxFooterSize(sr.Size(), decompressors...) + if maybeTocOffset := opts.tocOffset; maybeTocOffset > fetchSize { + if maybeTocOffset > sr.Size() { + return nil, fmt.Errorf("blob size %d is smaller than the toc offset", sr.Size()) + } + fetchSize = sr.Size() - maybeTocOffset + } + + start := time.Now() // before getting layer footer + footer := make([]byte, fetchSize) + if _, err := sr.ReadAt(footer, sr.Size()-fetchSize); err != nil { + return nil, fmt.Errorf("error reading footer: %v", err) + } + if opts.telemetry != nil && opts.telemetry.GetFooterLatency != nil { + opts.telemetry.GetFooterLatency(start) + } + + var allErr []error + var found bool + var r *Reader + for _, d := range decompressors { + fSize := d.FooterSize() + fOffset := positive(int64(len(footer)) - fSize) + maybeTocBytes := footer[:fOffset] + tocOffset, tocSize, err := d.ParseFooter(footer[fOffset:]) + if err != nil { + allErr = append(allErr, err) + continue + } + if tocSize <= 0 { + tocSize = sr.Size() - tocOffset - fSize + } + if tocSize < int64(len(maybeTocBytes)) { + maybeTocBytes = maybeTocBytes[:tocSize] + } + r, err = parseTOC(d, sr, tocOffset, tocSize, maybeTocBytes, opts) + if err == nil { + found = true + break + } + allErr = append(allErr, err) + } + if !found { + return nil, errorutil.Aggregate(allErr) + } + if err := r.initFields(); err != nil { + return nil, fmt.Errorf("failed to initialize fields of entries: %v", err) + } + return r, nil +} + +// OpenFooter extracts and parses footer from the given blob. +// only supports gzip-based eStargz. +func OpenFooter(sr *io.SectionReader) (tocOffset int64, footerSize int64, rErr error) { + if sr.Size() < FooterSize && sr.Size() < legacyFooterSize { + return 0, 0, fmt.Errorf("blob size %d is smaller than the footer size", sr.Size()) + } + var footer [FooterSize]byte + if _, err := sr.ReadAt(footer[:], sr.Size()-FooterSize); err != nil { + return 0, 0, fmt.Errorf("error reading footer: %v", err) + } + var allErr []error + for _, d := range []Decompressor{new(GzipDecompressor), new(legacyGzipDecompressor)} { + fSize := d.FooterSize() + fOffset := positive(int64(len(footer)) - fSize) + tocOffset, _, err := d.ParseFooter(footer[fOffset:]) + if err == nil { + return tocOffset, fSize, err + } + allErr = append(allErr, err) + } + return 0, 0, errorutil.Aggregate(allErr) +} + +// initFields populates the Reader from r.toc after decoding it from +// JSON. +// +// Unexported fields are populated and TOCEntry fields that were +// implicit in the JSON are populated. +func (r *Reader) initFields() error { + r.m = make(map[string]*TOCEntry, len(r.toc.Entries)) + r.chunks = make(map[string][]*TOCEntry) + var lastPath string + uname := map[int]string{} + gname := map[int]string{} + var lastRegEnt *TOCEntry + for _, ent := range r.toc.Entries { + ent.Name = cleanEntryName(ent.Name) + if ent.Type == "reg" { + lastRegEnt = ent + } + if ent.Type == "chunk" { + ent.Name = lastPath + r.chunks[ent.Name] = append(r.chunks[ent.Name], ent) + if ent.ChunkSize == 0 && lastRegEnt != nil { + ent.ChunkSize = lastRegEnt.Size - ent.ChunkOffset + } + } else { + lastPath = ent.Name + + if ent.Uname != "" { + uname[ent.UID] = ent.Uname + } else { + ent.Uname = uname[ent.UID] + } + if ent.Gname != "" { + gname[ent.GID] = ent.Gname + } else { + ent.Gname = uname[ent.GID] + } + + ent.modTime, _ = time.Parse(time.RFC3339, ent.ModTime3339) + + if ent.Type == "dir" { + ent.NumLink++ // Parent dir links to this directory + } + r.m[ent.Name] = ent + } + if ent.Type == "reg" && ent.ChunkSize > 0 && ent.ChunkSize < ent.Size { + r.chunks[ent.Name] = make([]*TOCEntry, 0, ent.Size/ent.ChunkSize+1) + r.chunks[ent.Name] = append(r.chunks[ent.Name], ent) + } + if ent.ChunkSize == 0 && ent.Size != 0 { + ent.ChunkSize = ent.Size + } + } + + // Populate children, add implicit directories: + for _, ent := range r.toc.Entries { + if ent.Type == "chunk" { + continue + } + // add "foo/": + // add "foo" child to "" (creating "" if necessary) + // + // add "foo/bar/": + // add "bar" child to "foo" (creating "foo" if necessary) + // + // add "foo/bar.txt": + // add "bar.txt" child to "foo" (creating "foo" if necessary) + // + // add "a/b/c/d/e/f.txt": + // create "a/b/c/d/e" node + // add "f.txt" child to "e" + + name := ent.Name + pdirName := parentDir(name) + if name == pdirName { + // This entry and its parent are the same. + // Ignore this for avoiding infinite loop of the reference. + // The example case where this can occur is when tar contains the root + // directory itself (e.g. "./", "/"). + continue + } + pdir := r.getOrCreateDir(pdirName) + ent.NumLink++ // at least one name(ent.Name) references this entry. + if ent.Type == "hardlink" { + if org, ok := r.m[cleanEntryName(ent.LinkName)]; ok { + org.NumLink++ // original entry is referenced by this ent.Name. + ent = org + } else { + return fmt.Errorf("%q is a hardlink but the linkname %q isn't found", ent.Name, ent.LinkName) + } + } + pdir.addChild(path.Base(name), ent) + } + + lastOffset := r.sr.Size() + for i := len(r.toc.Entries) - 1; i >= 0; i-- { + e := r.toc.Entries[i] + if e.isDataType() { + e.nextOffset = lastOffset + } + if e.Offset != 0 { + lastOffset = e.Offset + } + } + + return nil +} + +func parentDir(p string) string { + dir, _ := path.Split(p) + return strings.TrimSuffix(dir, "/") +} + +func (r *Reader) getOrCreateDir(d string) *TOCEntry { + e, ok := r.m[d] + if !ok { + e = &TOCEntry{ + Name: d, + Type: "dir", + Mode: 0755, + NumLink: 2, // The directory itself(.) and the parent link to this directory. + } + r.m[d] = e + if d != "" { + pdir := r.getOrCreateDir(parentDir(d)) + pdir.addChild(path.Base(d), e) + } + } + return e +} + +// VerifyTOC checks that the TOC JSON in the passed blob matches the +// passed digests and that the TOC JSON contains digests for all chunks +// contained in the blob. If the verification succceeds, this function +// returns TOCEntryVerifier which holds all chunk digests in the stargz blob. +func (r *Reader) VerifyTOC(tocDigest digest.Digest) (TOCEntryVerifier, error) { + // Verify the digest of TOC JSON + if r.tocDigest != tocDigest { + return nil, fmt.Errorf("invalid TOC JSON %q; want %q", r.tocDigest, tocDigest) + } + + chunkDigestMap := make(map[int64]digest.Digest) // map from chunk offset to the chunk digest + regDigestMap := make(map[int64]digest.Digest) // map from chunk offset to the reg file digest + var chunkDigestMapIncomplete bool + var regDigestMapIncomplete bool + var containsChunk bool + for _, e := range r.toc.Entries { + if e.Type != "reg" && e.Type != "chunk" { + continue + } + + // offset must be unique in stargz blob + _, dOK := chunkDigestMap[e.Offset] + _, rOK := regDigestMap[e.Offset] + if dOK || rOK { + return nil, fmt.Errorf("offset %d found twice", e.Offset) + } + + if e.Type == "reg" { + if e.Size == 0 { + continue // ignores empty file + } + + // record the digest of regular file payload + if e.Digest != "" { + d, err := digest.Parse(e.Digest) + if err != nil { + return nil, errors.Wrapf(err, + "failed to parse regular file digest %q", e.Digest) + } + regDigestMap[e.Offset] = d + } else { + regDigestMapIncomplete = true + } + } else { + containsChunk = true // this layer contains "chunk" entries. + } + + // "reg" also can contain ChunkDigest (e.g. when "reg" is the first entry of + // chunked file) + if e.ChunkDigest != "" { + d, err := digest.Parse(e.ChunkDigest) + if err != nil { + return nil, errors.Wrapf(err, + "failed to parse chunk digest %q", e.ChunkDigest) + } + chunkDigestMap[e.Offset] = d + } else { + chunkDigestMapIncomplete = true + } + } + + if chunkDigestMapIncomplete { + // Though some chunk digests are not found, if this layer doesn't contain + // "chunk"s and all digest of "reg" files are recorded, we can use them instead. + if !containsChunk && !regDigestMapIncomplete { + return &verifier{digestMap: regDigestMap}, nil + } + return nil, fmt.Errorf("some ChunkDigest not found in TOC JSON") + } + + return &verifier{digestMap: chunkDigestMap}, nil +} + +// verifier is an implementation of TOCEntryVerifier which holds verifiers keyed by +// offset of the chunk. +type verifier struct { + digestMap map[int64]digest.Digest + digestMapMu sync.Mutex +} + +// Verifier returns a content verifier specified by TOCEntry. +func (v *verifier) Verifier(ce *TOCEntry) (digest.Verifier, error) { + v.digestMapMu.Lock() + defer v.digestMapMu.Unlock() + d, ok := v.digestMap[ce.Offset] + if !ok { + return nil, fmt.Errorf("verifier for offset=%d,size=%d hasn't been registered", + ce.Offset, ce.ChunkSize) + } + return d.Verifier(), nil +} + +// ChunkEntryForOffset returns the TOCEntry containing the byte of the +// named file at the given offset within the file. +// Name must be absolute path or one that is relative to root. +func (r *Reader) ChunkEntryForOffset(name string, offset int64) (e *TOCEntry, ok bool) { + name = cleanEntryName(name) + e, ok = r.Lookup(name) + if !ok || !e.isDataType() { + return nil, false + } + ents := r.chunks[name] + if len(ents) < 2 { + if offset >= e.ChunkSize { + return nil, false + } + return e, true + } + i := sort.Search(len(ents), func(i int) bool { + e := ents[i] + return e.ChunkOffset >= offset || (offset > e.ChunkOffset && offset < e.ChunkOffset+e.ChunkSize) + }) + if i == len(ents) { + return nil, false + } + return ents[i], true +} + +// Lookup returns the Table of Contents entry for the given path. +// +// To get the root directory, use the empty string. +// Path must be absolute path or one that is relative to root. +func (r *Reader) Lookup(path string) (e *TOCEntry, ok bool) { + path = cleanEntryName(path) + if r == nil { + return + } + e, ok = r.m[path] + if ok && e.Type == "hardlink" { + e, ok = r.m[e.LinkName] + } + return +} + +// OpenFile returns the reader of the specified file payload. +// +// Name must be absolute path or one that is relative to root. +func (r *Reader) OpenFile(name string) (*io.SectionReader, error) { + name = cleanEntryName(name) + ent, ok := r.Lookup(name) + if !ok { + // TODO: come up with some error plan. This is lazy: + return nil, &os.PathError{ + Path: name, + Op: "OpenFile", + Err: os.ErrNotExist, + } + } + if ent.Type != "reg" { + return nil, &os.PathError{ + Path: name, + Op: "OpenFile", + Err: errors.New("not a regular file"), + } + } + fr := &fileReader{ + r: r, + size: ent.Size, + ents: r.getChunks(ent), + } + return io.NewSectionReader(fr, 0, fr.size), nil +} + +func (r *Reader) getChunks(ent *TOCEntry) []*TOCEntry { + if ents, ok := r.chunks[ent.Name]; ok { + return ents + } + return []*TOCEntry{ent} +} + +type fileReader struct { + r *Reader + size int64 + ents []*TOCEntry // 1 or more reg/chunk entries +} + +func (fr *fileReader) ReadAt(p []byte, off int64) (n int, err error) { + if off >= fr.size { + return 0, io.EOF + } + if off < 0 { + return 0, errors.New("invalid offset") + } + var i int + if len(fr.ents) > 1 { + i = sort.Search(len(fr.ents), func(i int) bool { + return fr.ents[i].ChunkOffset >= off + }) + if i == len(fr.ents) { + i = len(fr.ents) - 1 + } + } + ent := fr.ents[i] + if ent.ChunkOffset > off { + if i == 0 { + return 0, errors.New("internal error; first chunk offset is non-zero") + } + ent = fr.ents[i-1] + } + + // If ent is a chunk of a large file, adjust the ReadAt + // offset by the chunk's offset. + off -= ent.ChunkOffset + + finalEnt := fr.ents[len(fr.ents)-1] + compressedOff := ent.Offset + // compressedBytesRemain is the number of compressed bytes in this + // file remaining, over 1+ chunks. + compressedBytesRemain := finalEnt.NextOffset() - compressedOff + + sr := io.NewSectionReader(fr.r.sr, compressedOff, compressedBytesRemain) + + const maxRead = 2 << 20 + var bufSize = maxRead + if compressedBytesRemain < maxRead { + bufSize = int(compressedBytesRemain) + } + + br := bufio.NewReaderSize(sr, bufSize) + if _, err := br.Peek(bufSize); err != nil { + return 0, fmt.Errorf("fileReader.ReadAt.peek: %v", err) + } + + dr, err := fr.r.decompressor.Reader(br) + if err != nil { + return 0, fmt.Errorf("fileReader.ReadAt.decompressor.Reader: %v", err) + } + defer dr.Close() + if n, err := io.CopyN(ioutil.Discard, dr, off); n != off || err != nil { + return 0, fmt.Errorf("discard of %d bytes = %v, %v", off, n, err) + } + return io.ReadFull(dr, p) +} + +// A Writer writes stargz files. +// +// Use NewWriter to create a new Writer. +type Writer struct { + bw *bufio.Writer + cw *countWriter + toc *JTOC + diffHash hash.Hash // SHA-256 of uncompressed tar + + closed bool + gz io.WriteCloser + lastUsername map[int]string + lastGroupname map[int]string + compressor Compressor + + // ChunkSize optionally controls the maximum number of bytes + // of data of a regular file that can be written in one gzip + // stream before a new gzip stream is started. + // Zero means to use a default, currently 4 MiB. + ChunkSize int +} + +// currentCompressionWriter writes to the current w.gz field, which can +// change throughout writing a tar entry. +// +// Additionally, it updates w's SHA-256 of the uncompressed bytes +// of the tar file. +type currentCompressionWriter struct{ w *Writer } + +func (ccw currentCompressionWriter) Write(p []byte) (int, error) { + ccw.w.diffHash.Write(p) + return ccw.w.gz.Write(p) +} + +func (w *Writer) chunkSize() int { + if w.ChunkSize <= 0 { + return 4 << 20 + } + return w.ChunkSize +} + +// NewWriter returns a new stargz writer (gzip-based) writing to w. +// +// The writer must be closed to write its trailing table of contents. +func NewWriter(w io.Writer) *Writer { + return NewWriterLevel(w, gzip.BestCompression) +} + +// NewWriterLevel returns a new stargz writer (gzip-based) writing to w. +// The compression level is configurable. +// +// The writer must be closed to write its trailing table of contents. +func NewWriterLevel(w io.Writer, compressionLevel int) *Writer { + return NewWriterWithCompressor(w, NewGzipCompressorWithLevel(compressionLevel)) +} + +// NewWriterLevel returns a new stargz writer writing to w. +// The compression method is configurable. +// +// The writer must be closed to write its trailing table of contents. +func NewWriterWithCompressor(w io.Writer, c Compressor) *Writer { + bw := bufio.NewWriter(w) + cw := &countWriter{w: bw} + return &Writer{ + bw: bw, + cw: cw, + toc: &JTOC{Version: 1}, + diffHash: sha256.New(), + compressor: c, + } +} + +// Close writes the stargz's table of contents and flushes all the +// buffers, returning any error. +func (w *Writer) Close() (digest.Digest, error) { + if w.closed { + return "", nil + } + defer func() { w.closed = true }() + + if err := w.closeGz(); err != nil { + return "", err + } + + // Write the TOC index and footer. + tocDigest, err := w.compressor.WriteTOCAndFooter(w.cw, w.cw.n, w.toc, w.diffHash) + if err != nil { + return "", err + } + if err := w.bw.Flush(); err != nil { + return "", err + } + + return tocDigest, nil +} + +func (w *Writer) closeGz() error { + if w.closed { + return errors.New("write on closed Writer") + } + if w.gz != nil { + if err := w.gz.Close(); err != nil { + return err + } + w.gz = nil + } + return nil +} + +// nameIfChanged returns name, unless it was the already the value of (*mp)[id], +// in which case it returns the empty string. +func (w *Writer) nameIfChanged(mp *map[int]string, id int, name string) string { + if name == "" { + return "" + } + if *mp == nil { + *mp = make(map[int]string) + } + if (*mp)[id] == name { + return "" + } + (*mp)[id] = name + return name +} + +func (w *Writer) condOpenGz() (err error) { + if w.gz == nil { + w.gz, err = w.compressor.Writer(w.cw) + } + return +} + +// AppendTar reads the tar or tar.gz file from r and appends +// each of its contents to w. +// +// The input r can optionally be gzip compressed but the output will +// always be gzip compressed. +func (w *Writer) AppendTar(r io.Reader) error { + br := bufio.NewReader(r) + var tr *tar.Reader + if isGzip(br) { + // NewReader can't fail if isGzip returned true. + zr, _ := gzip.NewReader(br) + tr = tar.NewReader(zr) + } else { + tr = tar.NewReader(br) + } + for { + h, err := tr.Next() + if err == io.EOF { + break + } + if err != nil { + return fmt.Errorf("error reading from source tar: tar.Reader.Next: %v", err) + } + if h.Name == TOCTarName { + // It is possible for a layer to be "stargzified" twice during the + // distribution lifecycle. So we reserve "TOCTarName" here to avoid + // duplicated entries in the resulting layer. + continue + } + + xattrs := make(map[string][]byte) + const xattrPAXRecordsPrefix = "SCHILY.xattr." + if h.PAXRecords != nil { + for k, v := range h.PAXRecords { + if strings.HasPrefix(k, xattrPAXRecordsPrefix) { + xattrs[k[len(xattrPAXRecordsPrefix):]] = []byte(v) + } + } + } + ent := &TOCEntry{ + Name: h.Name, + Mode: h.Mode, + UID: h.Uid, + GID: h.Gid, + Uname: w.nameIfChanged(&w.lastUsername, h.Uid, h.Uname), + Gname: w.nameIfChanged(&w.lastGroupname, h.Gid, h.Gname), + ModTime3339: formatModtime(h.ModTime), + Xattrs: xattrs, + } + if err := w.condOpenGz(); err != nil { + return err + } + tw := tar.NewWriter(currentCompressionWriter{w}) + if err := tw.WriteHeader(h); err != nil { + return err + } + switch h.Typeflag { + case tar.TypeLink: + ent.Type = "hardlink" + ent.LinkName = h.Linkname + case tar.TypeSymlink: + ent.Type = "symlink" + ent.LinkName = h.Linkname + case tar.TypeDir: + ent.Type = "dir" + case tar.TypeReg: + ent.Type = "reg" + ent.Size = h.Size + case tar.TypeChar: + ent.Type = "char" + ent.DevMajor = int(h.Devmajor) + ent.DevMinor = int(h.Devminor) + case tar.TypeBlock: + ent.Type = "block" + ent.DevMajor = int(h.Devmajor) + ent.DevMinor = int(h.Devminor) + case tar.TypeFifo: + ent.Type = "fifo" + default: + return fmt.Errorf("unsupported input tar entry %q", h.Typeflag) + } + + // We need to keep a reference to the TOC entry for regular files, so that we + // can fill the digest later. + var regFileEntry *TOCEntry + var payloadDigest digest.Digester + if h.Typeflag == tar.TypeReg { + regFileEntry = ent + payloadDigest = digest.Canonical.Digester() + } + + if h.Typeflag == tar.TypeReg && ent.Size > 0 { + var written int64 + totalSize := ent.Size // save it before we destroy ent + tee := io.TeeReader(tr, payloadDigest.Hash()) + for written < totalSize { + if err := w.closeGz(); err != nil { + return err + } + + chunkSize := int64(w.chunkSize()) + remain := totalSize - written + if remain < chunkSize { + chunkSize = remain + } else { + ent.ChunkSize = chunkSize + } + ent.Offset = w.cw.n + ent.ChunkOffset = written + chunkDigest := digest.Canonical.Digester() + + if err := w.condOpenGz(); err != nil { + return err + } + + teeChunk := io.TeeReader(tee, chunkDigest.Hash()) + if _, err := io.CopyN(tw, teeChunk, chunkSize); err != nil { + return fmt.Errorf("error copying %q: %v", h.Name, err) + } + ent.ChunkDigest = chunkDigest.Digest().String() + w.toc.Entries = append(w.toc.Entries, ent) + written += chunkSize + ent = &TOCEntry{ + Name: h.Name, + Type: "chunk", + } + } + } else { + w.toc.Entries = append(w.toc.Entries, ent) + } + if payloadDigest != nil { + regFileEntry.Digest = payloadDigest.Digest().String() + } + if err := tw.Flush(); err != nil { + return err + } + } + return nil +} + +// DiffID returns the SHA-256 of the uncompressed tar bytes. +// It is only valid to call DiffID after Close. +func (w *Writer) DiffID() string { + return fmt.Sprintf("sha256:%x", w.diffHash.Sum(nil)) +} + +func maxFooterSize(blobSize int64, decompressors ...Decompressor) (res int64) { + for _, d := range decompressors { + if s := d.FooterSize(); res < s && s <= blobSize { + res = s + } + } + return +} + +func parseTOC(d Decompressor, sr *io.SectionReader, tocOff, tocSize int64, tocBytes []byte, opts openOpts) (*Reader, error) { + if len(tocBytes) > 0 { + start := time.Now() + toc, tocDgst, err := d.ParseTOC(bytes.NewReader(tocBytes)) + if err == nil { + if opts.telemetry != nil && opts.telemetry.DeserializeTocLatency != nil { + opts.telemetry.DeserializeTocLatency(start) + } + return &Reader{ + sr: sr, + toc: toc, + tocDigest: tocDgst, + decompressor: d, + }, nil + } + } + + start := time.Now() + tocBytes = make([]byte, tocSize) + if _, err := sr.ReadAt(tocBytes, tocOff); err != nil { + return nil, fmt.Errorf("error reading %d byte TOC targz: %v", len(tocBytes), err) + } + if opts.telemetry != nil && opts.telemetry.GetTocLatency != nil { + opts.telemetry.GetTocLatency(start) + } + start = time.Now() + toc, tocDgst, err := d.ParseTOC(bytes.NewReader(tocBytes)) + if err != nil { + return nil, err + } + if opts.telemetry != nil && opts.telemetry.DeserializeTocLatency != nil { + opts.telemetry.DeserializeTocLatency(start) + } + return &Reader{ + sr: sr, + toc: toc, + tocDigest: tocDgst, + decompressor: d, + }, nil +} + +func formatModtime(t time.Time) string { + if t.IsZero() || t.Unix() == 0 { + return "" + } + return t.UTC().Round(time.Second).Format(time.RFC3339) +} + +func cleanEntryName(name string) string { + // Use path.Clean to consistently deal with path separators across platforms. + return strings.TrimPrefix(path.Clean("/"+name), "/") +} + +// countWriter counts how many bytes have been written to its wrapped +// io.Writer. +type countWriter struct { + w io.Writer + n int64 +} + +func (cw *countWriter) Write(p []byte) (n int, err error) { + n, err = cw.w.Write(p) + cw.n += int64(n) + return +} + +// isGzip reports whether br is positioned right before an upcoming gzip stream. +// It does not consume any bytes from br. +func isGzip(br *bufio.Reader) bool { + const ( + gzipID1 = 0x1f + gzipID2 = 0x8b + gzipDeflate = 8 + ) + peek, _ := br.Peek(3) + return len(peek) >= 3 && peek[0] == gzipID1 && peek[1] == gzipID2 && peek[2] == gzipDeflate +} + +func positive(n int64) int64 { + if n < 0 { + return 0 + } + return n +} diff --git a/vendor/github.com/containerd/stargz-snapshotter/estargz/go.mod b/vendor/github.com/containerd/stargz-snapshotter/estargz/go.mod new file mode 100644 index 000000000..ee6b2e17f --- /dev/null +++ b/vendor/github.com/containerd/stargz-snapshotter/estargz/go.mod @@ -0,0 +1,10 @@ +module github.com/containerd/stargz-snapshotter/estargz + +go 1.16 + +require ( + github.com/klauspost/compress v1.13.5 + github.com/opencontainers/go-digest v1.0.0 + github.com/pkg/errors v0.9.1 + golang.org/x/sync v0.0.0-20201207232520-09787c993a3a +) diff --git a/vendor/github.com/containerd/stargz-snapshotter/estargz/go.sum b/vendor/github.com/containerd/stargz-snapshotter/estargz/go.sum new file mode 100644 index 000000000..66cd2d69c --- /dev/null +++ b/vendor/github.com/containerd/stargz-snapshotter/estargz/go.sum @@ -0,0 +1,8 @@ +github.com/klauspost/compress v1.13.5 h1:9O69jUPDcsT9fEm74W92rZL9FQY7rCdaXVneq+yyzl4= +github.com/klauspost/compress v1.13.5/go.mod h1:/3/Vjq9QcHkK5uEr5lBEmyoZ1iFhe47etQ6QUkpK6sk= +github.com/opencontainers/go-digest v1.0.0 h1:apOUWs51W5PlhuyGyz9FCeeBIOUDA/6nW8Oi/yOhh5U= +github.com/opencontainers/go-digest v1.0.0/go.mod h1:0JzlMkj0TRzQZfJkVvzbP0HBR3IKzErnv2BNG4W4MAM= +github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4= +github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0= +golang.org/x/sync v0.0.0-20201207232520-09787c993a3a h1:DcqTD9SDLc+1P/r1EmRBwnVsrOwW+kk2vWf9n+1sGhs= +golang.org/x/sync v0.0.0-20201207232520-09787c993a3a/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM= diff --git a/vendor/github.com/containerd/stargz-snapshotter/estargz/gzip.go b/vendor/github.com/containerd/stargz-snapshotter/estargz/gzip.go new file mode 100644 index 000000000..efc435e09 --- /dev/null +++ b/vendor/github.com/containerd/stargz-snapshotter/estargz/gzip.go @@ -0,0 +1,216 @@ +/* + Copyright The containerd Authors. + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. +*/ + +/* + Copyright 2019 The Go Authors. All rights reserved. + Use of this source code is governed by a BSD-style + license that can be found in the LICENSE file. +*/ + +package estargz + +import ( + "archive/tar" + "bytes" + "compress/gzip" + "encoding/binary" + "encoding/json" + "fmt" + "hash" + "io" + "strconv" + + digest "github.com/opencontainers/go-digest" + "github.com/pkg/errors" +) + +type gzipCompression struct { + *gzipCompressor + *GzipDecompressor +} + +func newGzipCompressionWithLevel(level int) Compression { + return &gzipCompression{ + &gzipCompressor{level}, + &GzipDecompressor{}, + } +} + +func NewGzipCompressorWithLevel(level int) Compressor { + return &gzipCompressor{level} +} + +type gzipCompressor struct { + compressionLevel int +} + +func (gc *gzipCompressor) Writer(w io.Writer) (io.WriteCloser, error) { + return gzip.NewWriterLevel(w, gc.compressionLevel) +} + +func (gc *gzipCompressor) WriteTOCAndFooter(w io.Writer, off int64, toc *JTOC, diffHash hash.Hash) (digest.Digest, error) { + tocJSON, err := json.MarshalIndent(toc, "", "\t") + if err != nil { + return "", err + } + gz, _ := gzip.NewWriterLevel(w, gc.compressionLevel) + gw := io.Writer(gz) + if diffHash != nil { + gw = io.MultiWriter(gz, diffHash) + } + tw := tar.NewWriter(gw) + if err := tw.WriteHeader(&tar.Header{ + Typeflag: tar.TypeReg, + Name: TOCTarName, + Size: int64(len(tocJSON)), + }); err != nil { + return "", err + } + if _, err := tw.Write(tocJSON); err != nil { + return "", err + } + + if err := tw.Close(); err != nil { + return "", err + } + if err := gz.Close(); err != nil { + return "", err + } + if _, err := w.Write(gzipFooterBytes(off)); err != nil { + return "", err + } + return digest.FromBytes(tocJSON), nil +} + +// gzipFooterBytes returns the 51 bytes footer. +func gzipFooterBytes(tocOff int64) []byte { + buf := bytes.NewBuffer(make([]byte, 0, FooterSize)) + gz, _ := gzip.NewWriterLevel(buf, gzip.NoCompression) // MUST be NoCompression to keep 51 bytes + + // Extra header indicating the offset of TOCJSON + // https://tools.ietf.org/html/rfc1952#section-2.3.1.1 + header := make([]byte, 4) + header[0], header[1] = 'S', 'G' + subfield := fmt.Sprintf("%016xSTARGZ", tocOff) + binary.LittleEndian.PutUint16(header[2:4], uint16(len(subfield))) // little-endian per RFC1952 + gz.Header.Extra = append(header, []byte(subfield)...) + gz.Close() + if buf.Len() != FooterSize { + panic(fmt.Sprintf("footer buffer = %d, not %d", buf.Len(), FooterSize)) + } + return buf.Bytes() +} + +type GzipDecompressor struct{} + +func (gz *GzipDecompressor) Reader(r io.Reader) (io.ReadCloser, error) { + return gzip.NewReader(r) +} + +func (gz *GzipDecompressor) ParseTOC(r io.Reader) (toc *JTOC, tocDgst digest.Digest, err error) { + return parseTOCEStargz(r) +} + +func (gz *GzipDecompressor) ParseFooter(p []byte) (tocOffset, tocSize int64, err error) { + if len(p) != FooterSize { + return 0, 0, fmt.Errorf("invalid length %d cannot be parsed", len(p)) + } + zr, err := gzip.NewReader(bytes.NewReader(p)) + if err != nil { + return 0, 0, err + } + defer zr.Close() + extra := zr.Header.Extra + si1, si2, subfieldlen, subfield := extra[0], extra[1], extra[2:4], extra[4:] + if si1 != 'S' || si2 != 'G' { + return 0, 0, fmt.Errorf("invalid subfield IDs: %q, %q; want E, S", si1, si2) + } + if slen := binary.LittleEndian.Uint16(subfieldlen); slen != uint16(16+len("STARGZ")) { + return 0, 0, fmt.Errorf("invalid length of subfield %d; want %d", slen, 16+len("STARGZ")) + } + if string(subfield[16:]) != "STARGZ" { + return 0, 0, fmt.Errorf("STARGZ magic string must be included in the footer subfield") + } + tocOffset, err = strconv.ParseInt(string(subfield[:16]), 16, 64) + if err != nil { + return 0, 0, errors.Wrapf(err, "legacy: failed to parse toc offset") + } + return tocOffset, 0, nil +} + +func (gz *GzipDecompressor) FooterSize() int64 { + return FooterSize +} + +type legacyGzipDecompressor struct{} + +func (gz *legacyGzipDecompressor) Reader(r io.Reader) (io.ReadCloser, error) { + return gzip.NewReader(r) +} + +func (gz *legacyGzipDecompressor) ParseTOC(r io.Reader) (toc *JTOC, tocDgst digest.Digest, err error) { + return parseTOCEStargz(r) +} + +func (gz *legacyGzipDecompressor) ParseFooter(p []byte) (tocOffset, tocSize int64, err error) { + if len(p) != legacyFooterSize { + return 0, 0, fmt.Errorf("legacy: invalid length %d cannot be parsed", len(p)) + } + zr, err := gzip.NewReader(bytes.NewReader(p)) + if err != nil { + return 0, 0, errors.Wrapf(err, "legacy: failed to get footer gzip reader") + } + defer zr.Close() + extra := zr.Header.Extra + if len(extra) != 16+len("STARGZ") { + return 0, 0, fmt.Errorf("legacy: invalid stargz's extra field size") + } + if string(extra[16:]) != "STARGZ" { + return 0, 0, fmt.Errorf("legacy: magic string STARGZ not found") + } + tocOffset, err = strconv.ParseInt(string(extra[:16]), 16, 64) + if err != nil { + return 0, 0, errors.Wrapf(err, "legacy: failed to parse toc offset") + } + return tocOffset, 0, nil +} + +func (gz *legacyGzipDecompressor) FooterSize() int64 { + return legacyFooterSize +} + +func parseTOCEStargz(r io.Reader) (toc *JTOC, tocDgst digest.Digest, err error) { + zr, err := gzip.NewReader(r) + if err != nil { + return nil, "", fmt.Errorf("malformed TOC gzip header: %v", err) + } + defer zr.Close() + zr.Multistream(false) + tr := tar.NewReader(zr) + h, err := tr.Next() + if err != nil { + return nil, "", fmt.Errorf("failed to find tar header in TOC gzip stream: %v", err) + } + if h.Name != TOCTarName { + return nil, "", fmt.Errorf("TOC tar entry had name %q; expected %q", h.Name, TOCTarName) + } + dgstr := digest.Canonical.Digester() + toc = new(JTOC) + if err := json.NewDecoder(io.TeeReader(tr, dgstr.Hash())).Decode(&toc); err != nil { + return nil, "", fmt.Errorf("error decoding TOC JSON: %v", err) + } + return toc, dgstr.Digest(), nil +} diff --git a/vendor/github.com/containerd/stargz-snapshotter/estargz/testutil.go b/vendor/github.com/containerd/stargz-snapshotter/estargz/testutil.go new file mode 100644 index 000000000..020729b7e --- /dev/null +++ b/vendor/github.com/containerd/stargz-snapshotter/estargz/testutil.go @@ -0,0 +1,1933 @@ +/* + Copyright The containerd Authors. + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. +*/ + +/* + Copyright 2019 The Go Authors. All rights reserved. + Use of this source code is governed by a BSD-style + license that can be found in the LICENSE file. +*/ + +package estargz + +import ( + "archive/tar" + "bytes" + "compress/gzip" + "crypto/sha256" + "encoding/json" + "fmt" + "io" + "io/ioutil" + "os" + "reflect" + "sort" + "strings" + "testing" + "time" + + "github.com/containerd/stargz-snapshotter/estargz/errorutil" + "github.com/klauspost/compress/zstd" + digest "github.com/opencontainers/go-digest" + "github.com/pkg/errors" +) + +// TestingController is Compression with some helper methods necessary for testing. +type TestingController interface { + Compression + CountStreams(*testing.T, []byte) int + DiffIDOf(*testing.T, []byte) string + String() string +} + +// CompressionTestSuite tests this pkg with controllers can build valid eStargz blobs and parse them. +func CompressionTestSuite(t *testing.T, controllers ...TestingController) { + t.Run("testBuild", func(t *testing.T) { t.Parallel(); testBuild(t, controllers...) }) + t.Run("testDigestAndVerify", func(t *testing.T) { t.Parallel(); testDigestAndVerify(t, controllers...) }) + t.Run("testWriteAndOpen", func(t *testing.T) { t.Parallel(); testWriteAndOpen(t, controllers...) }) +} + +const ( + uncompressedType int = iota + gzipType + zstdType +) + +var srcCompressions = []int{ + uncompressedType, + gzipType, + zstdType, +} + +var allowedPrefix = [4]string{"", "./", "/", "../"} + +// testBuild tests the resulting stargz blob built by this pkg has the same +// contents as the normal stargz blob. +func testBuild(t *testing.T, controllers ...TestingController) { + tests := []struct { + name string + chunkSize int + in []tarEntry + }{ + { + name: "regfiles and directories", + chunkSize: 4, + in: tarOf( + file("foo", "test1"), + dir("foo2/"), + file("foo2/bar", "test2", xAttr(map[string]string{"test": "sample"})), + ), + }, + { + name: "empty files", + chunkSize: 4, + in: tarOf( + file("foo", "tttttt"), + file("foo_empty", ""), + file("foo2", "tttttt"), + file("foo_empty2", ""), + file("foo3", "tttttt"), + file("foo_empty3", ""), + file("foo4", "tttttt"), + file("foo_empty4", ""), + file("foo5", "tttttt"), + file("foo_empty5", ""), + file("foo6", "tttttt"), + ), + }, + { + name: "various files", + chunkSize: 4, + in: tarOf( + file("baz.txt", "bazbazbazbazbazbazbaz"), + file("foo.txt", "a"), + symlink("barlink", "test/bar.txt"), + dir("test/"), + dir("dev/"), + blockdev("dev/testblock", 3, 4), + fifo("dev/testfifo"), + chardev("dev/testchar1", 5, 6), + file("test/bar.txt", "testbartestbar", xAttr(map[string]string{"test2": "sample2"})), + dir("test2/"), + link("test2/bazlink", "baz.txt"), + chardev("dev/testchar2", 1, 2), + ), + }, + { + name: "no contents", + chunkSize: 4, + in: tarOf( + file("baz.txt", ""), + symlink("barlink", "test/bar.txt"), + dir("test/"), + dir("dev/"), + blockdev("dev/testblock", 3, 4), + fifo("dev/testfifo"), + chardev("dev/testchar1", 5, 6), + file("test/bar.txt", "", xAttr(map[string]string{"test2": "sample2"})), + dir("test2/"), + link("test2/bazlink", "baz.txt"), + chardev("dev/testchar2", 1, 2), + ), + }, + } + for _, tt := range tests { + for _, srcCompression := range srcCompressions { + srcCompression := srcCompression + for _, cl := range controllers { + cl := cl + for _, prefix := range allowedPrefix { + prefix := prefix + t.Run(tt.name+"-"+fmt.Sprintf("compression=%v-prefix=%q-src=%d", cl, prefix, srcCompression), func(t *testing.T) { + tarBlob := buildTarStatic(t, tt.in, prefix) + // Test divideEntries() + entries, err := sortEntries(tarBlob, nil, nil) // identical order + if err != nil { + t.Fatalf("faield to parse tar: %v", err) + } + var merged []*entry + for _, part := range divideEntries(entries, 4) { + merged = append(merged, part...) + } + if !reflect.DeepEqual(entries, merged) { + for _, e := range entries { + t.Logf("Original: %v", e.header) + } + for _, e := range merged { + t.Logf("Merged: %v", e.header) + } + t.Errorf("divided entries couldn't be merged") + return + } + + // Prepare sample data + wantBuf := new(bytes.Buffer) + sw := NewWriterWithCompressor(wantBuf, cl) + sw.ChunkSize = tt.chunkSize + if err := sw.AppendTar(tarBlob); err != nil { + t.Fatalf("faield to append tar to want stargz: %v", err) + } + if _, err := sw.Close(); err != nil { + t.Fatalf("faield to prepare want stargz: %v", err) + } + wantData := wantBuf.Bytes() + want, err := Open(io.NewSectionReader( + bytes.NewReader(wantData), 0, int64(len(wantData))), + WithDecompressors(cl), + ) + if err != nil { + t.Fatalf("failed to parse the want stargz: %v", err) + } + + // Prepare testing data + rc, err := Build(compressBlob(t, tarBlob, srcCompression), + WithChunkSize(tt.chunkSize), WithCompression(cl)) + if err != nil { + t.Fatalf("faield to build stargz: %v", err) + } + defer rc.Close() + gotBuf := new(bytes.Buffer) + if _, err := io.Copy(gotBuf, rc); err != nil { + t.Fatalf("failed to copy built stargz blob: %v", err) + } + gotData := gotBuf.Bytes() + got, err := Open(io.NewSectionReader( + bytes.NewReader(gotBuf.Bytes()), 0, int64(len(gotData))), + WithDecompressors(cl), + ) + if err != nil { + t.Fatalf("failed to parse the got stargz: %v", err) + } + + // Check DiffID is properly calculated + rc.Close() + diffID := rc.DiffID() + wantDiffID := cl.DiffIDOf(t, gotData) + if diffID.String() != wantDiffID { + t.Errorf("DiffID = %q; want %q", diffID, wantDiffID) + } + + // Compare as stargz + if !isSameVersion(t, cl, wantData, gotData) { + t.Errorf("built stargz hasn't same json") + return + } + if !isSameEntries(t, want, got) { + t.Errorf("built stargz isn't same as the original") + return + } + + // Compare as tar.gz + if !isSameTarGz(t, cl, wantData, gotData) { + t.Errorf("built stargz isn't same tar.gz") + return + } + }) + } + } + } + } +} + +func isSameTarGz(t *testing.T, controller TestingController, a, b []byte) bool { + aGz, err := controller.Reader(bytes.NewReader(a)) + if err != nil { + t.Fatalf("failed to read A") + } + defer aGz.Close() + bGz, err := controller.Reader(bytes.NewReader(b)) + if err != nil { + t.Fatalf("failed to read B") + } + defer bGz.Close() + + // Same as tar's Next() method but ignores landmarks and TOCJSON file + next := func(r *tar.Reader) (h *tar.Header, err error) { + for { + if h, err = r.Next(); err != nil { + return + } + if h.Name != PrefetchLandmark && + h.Name != NoPrefetchLandmark && + h.Name != TOCTarName { + return + } + } + } + + aTar := tar.NewReader(aGz) + bTar := tar.NewReader(bGz) + for { + // Fetch and parse next header. + aH, aErr := next(aTar) + bH, bErr := next(bTar) + if aErr != nil || bErr != nil { + if aErr == io.EOF && bErr == io.EOF { + break + } + t.Fatalf("Failed to parse tar file: A: %v, B: %v", aErr, bErr) + } + if !reflect.DeepEqual(aH, bH) { + t.Logf("different header (A = %v; B = %v)", aH, bH) + return false + + } + aFile, err := ioutil.ReadAll(aTar) + if err != nil { + t.Fatal("failed to read tar payload of A") + } + bFile, err := ioutil.ReadAll(bTar) + if err != nil { + t.Fatal("failed to read tar payload of B") + } + if !bytes.Equal(aFile, bFile) { + t.Logf("different tar payload (A = %q; B = %q)", string(a), string(b)) + return false + } + } + + return true +} + +func isSameVersion(t *testing.T, controller TestingController, a, b []byte) bool { + aJTOC, _, err := parseStargz(io.NewSectionReader(bytes.NewReader(a), 0, int64(len(a))), controller) + if err != nil { + t.Fatalf("failed to parse A: %v", err) + } + bJTOC, _, err := parseStargz(io.NewSectionReader(bytes.NewReader(b), 0, int64(len(b))), controller) + if err != nil { + t.Fatalf("failed to parse B: %v", err) + } + t.Logf("A: TOCJSON: %v", dumpTOCJSON(t, aJTOC)) + t.Logf("B: TOCJSON: %v", dumpTOCJSON(t, bJTOC)) + return aJTOC.Version == bJTOC.Version +} + +func isSameEntries(t *testing.T, a, b *Reader) bool { + aroot, ok := a.Lookup("") + if !ok { + t.Fatalf("failed to get root of A") + } + broot, ok := b.Lookup("") + if !ok { + t.Fatalf("failed to get root of B") + } + aEntry := stargzEntry{aroot, a} + bEntry := stargzEntry{broot, b} + return contains(t, aEntry, bEntry) && contains(t, bEntry, aEntry) +} + +func compressBlob(t *testing.T, src *io.SectionReader, srcCompression int) *io.SectionReader { + buf := new(bytes.Buffer) + var w io.WriteCloser + var err error + if srcCompression == gzipType { + w = gzip.NewWriter(buf) + } else if srcCompression == zstdType { + w, err = zstd.NewWriter(buf) + if err != nil { + t.Fatalf("failed to init zstd writer: %v", err) + } + } else { + return src + } + src.Seek(0, io.SeekStart) + if _, err := io.Copy(w, src); err != nil { + t.Fatalf("failed to compress source") + } + if err := w.Close(); err != nil { + t.Fatalf("failed to finalize compress source") + } + data := buf.Bytes() + return io.NewSectionReader(bytes.NewReader(data), 0, int64(len(data))) + +} + +type stargzEntry struct { + e *TOCEntry + r *Reader +} + +// contains checks if all child entries in "b" are also contained in "a". +// This function also checks if the files/chunks contain the same contents among "a" and "b". +func contains(t *testing.T, a, b stargzEntry) bool { + ae, ar := a.e, a.r + be, br := b.e, b.r + t.Logf("Comparing: %q vs %q", ae.Name, be.Name) + if !equalEntry(ae, be) { + t.Logf("%q != %q: entry: a: %v, b: %v", ae.Name, be.Name, ae, be) + return false + } + if ae.Type == "dir" { + t.Logf("Directory: %q vs %q: %v vs %v", ae.Name, be.Name, + allChildrenName(ae), allChildrenName(be)) + iscontain := true + ae.ForeachChild(func(aBaseName string, aChild *TOCEntry) bool { + // Walk through all files on this stargz file. + + if aChild.Name == PrefetchLandmark || + aChild.Name == NoPrefetchLandmark { + return true // Ignore landmarks + } + + // Ignore a TOCEntry of "./" (formated as "" by stargz lib) on root directory + // because this points to the root directory itself. + if aChild.Name == "" && ae.Name == "" { + return true + } + + bChild, ok := be.LookupChild(aBaseName) + if !ok { + t.Logf("%q (base: %q): not found in b: %v", + ae.Name, aBaseName, allChildrenName(be)) + iscontain = false + return false + } + + childcontain := contains(t, stargzEntry{aChild, a.r}, stargzEntry{bChild, b.r}) + if !childcontain { + t.Logf("%q != %q: non-equal dir", ae.Name, be.Name) + iscontain = false + return false + } + return true + }) + return iscontain + } else if ae.Type == "reg" { + af, err := ar.OpenFile(ae.Name) + if err != nil { + t.Fatalf("failed to open file %q on A: %v", ae.Name, err) + } + bf, err := br.OpenFile(be.Name) + if err != nil { + t.Fatalf("failed to open file %q on B: %v", be.Name, err) + } + + var nr int64 + for nr < ae.Size { + abytes, anext, aok := readOffset(t, af, nr, a) + bbytes, bnext, bok := readOffset(t, bf, nr, b) + if !aok && !bok { + break + } else if !(aok && bok) || anext != bnext { + t.Logf("%q != %q (offset=%d): chunk existence a=%v vs b=%v, anext=%v vs bnext=%v", + ae.Name, be.Name, nr, aok, bok, anext, bnext) + return false + } + nr = anext + if !bytes.Equal(abytes, bbytes) { + t.Logf("%q != %q: different contents %v vs %v", + ae.Name, be.Name, string(abytes), string(bbytes)) + return false + } + } + return true + } + + return true +} + +func allChildrenName(e *TOCEntry) (children []string) { + e.ForeachChild(func(baseName string, _ *TOCEntry) bool { + children = append(children, baseName) + return true + }) + return +} + +func equalEntry(a, b *TOCEntry) bool { + // Here, we selectively compare fileds that we are interested in. + return a.Name == b.Name && + a.Type == b.Type && + a.Size == b.Size && + a.ModTime3339 == b.ModTime3339 && + a.Stat().ModTime().Equal(b.Stat().ModTime()) && // modTime time.Time + a.LinkName == b.LinkName && + a.Mode == b.Mode && + a.UID == b.UID && + a.GID == b.GID && + a.Uname == b.Uname && + a.Gname == b.Gname && + (a.Offset > 0) == (b.Offset > 0) && + (a.NextOffset() > 0) == (b.NextOffset() > 0) && + a.DevMajor == b.DevMajor && + a.DevMinor == b.DevMinor && + a.NumLink == b.NumLink && + reflect.DeepEqual(a.Xattrs, b.Xattrs) && + // chunk-related infomations aren't compared in this function. + // ChunkOffset int64 `json:"chunkOffset,omitempty"` + // ChunkSize int64 `json:"chunkSize,omitempty"` + // children map[string]*TOCEntry + a.Digest == b.Digest +} + +func readOffset(t *testing.T, r *io.SectionReader, offset int64, e stargzEntry) ([]byte, int64, bool) { + ce, ok := e.r.ChunkEntryForOffset(e.e.Name, offset) + if !ok { + return nil, 0, false + } + data := make([]byte, ce.ChunkSize) + t.Logf("Offset: %v, NextOffset: %v", ce.Offset, ce.NextOffset()) + n, err := r.ReadAt(data, ce.ChunkOffset) + if err != nil { + t.Fatalf("failed to read file payload of %q (offset:%d,size:%d): %v", + e.e.Name, ce.ChunkOffset, ce.ChunkSize, err) + } + if int64(n) != ce.ChunkSize { + t.Fatalf("unexpected copied data size %d; want %d", + n, ce.ChunkSize) + } + return data[:n], offset + ce.ChunkSize, true +} + +func dumpTOCJSON(t *testing.T, tocJSON *JTOC) string { + jtocData, err := json.Marshal(*tocJSON) + if err != nil { + t.Fatalf("failed to marshal TOC JSON: %v", err) + } + buf := new(bytes.Buffer) + if _, err := io.Copy(buf, bytes.NewReader(jtocData)); err != nil { + t.Fatalf("failed to read toc json blob: %v", err) + } + return buf.String() +} + +const chunkSize = 3 + +// type check func(t *testing.T, sgzData []byte, tocDigest digest.Digest, dgstMap map[string]digest.Digest, compressionLevel int) +type check func(t *testing.T, sgzData []byte, tocDigest digest.Digest, dgstMap map[string]digest.Digest, controller TestingController) + +// testDigestAndVerify runs specified checks against sample stargz blobs. +func testDigestAndVerify(t *testing.T, controllers ...TestingController) { + tests := []struct { + name string + tarInit func(t *testing.T, dgstMap map[string]digest.Digest) (blob []tarEntry) + checks []check + }{ + { + name: "no-regfile", + tarInit: func(t *testing.T, dgstMap map[string]digest.Digest) (blob []tarEntry) { + return tarOf( + dir("test/"), + ) + }, + checks: []check{ + checkStargzTOC, + checkVerifyTOC, + checkVerifyInvalidStargzFail(buildTarStatic(t, tarOf( + dir("test2/"), // modified + ), allowedPrefix[0])), + }, + }, + { + name: "small-files", + tarInit: func(t *testing.T, dgstMap map[string]digest.Digest) (blob []tarEntry) { + return tarOf( + regDigest(t, "baz.txt", "", dgstMap), + regDigest(t, "foo.txt", "a", dgstMap), + dir("test/"), + regDigest(t, "test/bar.txt", "bbb", dgstMap), + ) + }, + checks: []check{ + checkStargzTOC, + checkVerifyTOC, + checkVerifyInvalidStargzFail(buildTarStatic(t, tarOf( + file("baz.txt", ""), + file("foo.txt", "M"), // modified + dir("test/"), + file("test/bar.txt", "bbb"), + ), allowedPrefix[0])), + // checkVerifyInvalidTOCEntryFail("foo.txt"), // TODO + checkVerifyBrokenContentFail("foo.txt"), + }, + }, + { + name: "big-files", + tarInit: func(t *testing.T, dgstMap map[string]digest.Digest) (blob []tarEntry) { + return tarOf( + regDigest(t, "baz.txt", "bazbazbazbazbazbazbaz", dgstMap), + regDigest(t, "foo.txt", "a", dgstMap), + dir("test/"), + regDigest(t, "test/bar.txt", "testbartestbar", dgstMap), + ) + }, + checks: []check{ + checkStargzTOC, + checkVerifyTOC, + checkVerifyInvalidStargzFail(buildTarStatic(t, tarOf( + file("baz.txt", "bazbazbazMMMbazbazbaz"), // modified + file("foo.txt", "a"), + dir("test/"), + file("test/bar.txt", "testbartestbar"), + ), allowedPrefix[0])), + checkVerifyInvalidTOCEntryFail("test/bar.txt"), + checkVerifyBrokenContentFail("test/bar.txt"), + }, + }, + { + name: "with-non-regfiles", + tarInit: func(t *testing.T, dgstMap map[string]digest.Digest) (blob []tarEntry) { + return tarOf( + regDigest(t, "baz.txt", "bazbazbazbazbazbazbaz", dgstMap), + regDigest(t, "foo.txt", "a", dgstMap), + symlink("barlink", "test/bar.txt"), + dir("test/"), + regDigest(t, "test/bar.txt", "testbartestbar", dgstMap), + dir("test2/"), + link("test2/bazlink", "baz.txt"), + ) + }, + checks: []check{ + checkStargzTOC, + checkVerifyTOC, + checkVerifyInvalidStargzFail(buildTarStatic(t, tarOf( + file("baz.txt", "bazbazbazbazbazbazbaz"), + file("foo.txt", "a"), + symlink("barlink", "test/bar.txt"), + dir("test/"), + file("test/bar.txt", "testbartestbar"), + dir("test2/"), + link("test2/bazlink", "foo.txt"), // modified + ), allowedPrefix[0])), + checkVerifyInvalidTOCEntryFail("test/bar.txt"), + checkVerifyBrokenContentFail("test/bar.txt"), + }, + }, + } + + for _, tt := range tests { + for _, srcCompression := range srcCompressions { + srcCompression := srcCompression + for _, cl := range controllers { + cl := cl + for _, prefix := range allowedPrefix { + prefix := prefix + t.Run(tt.name+"-"+fmt.Sprintf("compression=%v-prefix=%q", cl, prefix), func(t *testing.T) { + // Get original tar file and chunk digests + dgstMap := make(map[string]digest.Digest) + tarBlob := buildTarStatic(t, tt.tarInit(t, dgstMap), prefix) + + rc, err := Build(compressBlob(t, tarBlob, srcCompression), + WithChunkSize(chunkSize), WithCompression(cl)) + if err != nil { + t.Fatalf("failed to convert stargz: %v", err) + } + tocDigest := rc.TOCDigest() + defer rc.Close() + buf := new(bytes.Buffer) + if _, err := io.Copy(buf, rc); err != nil { + t.Fatalf("failed to copy built stargz blob: %v", err) + } + newStargz := buf.Bytes() + // NoPrefetchLandmark is added during `Bulid`, which is expected behaviour. + dgstMap[chunkID(NoPrefetchLandmark, 0, int64(len([]byte{landmarkContents})))] = digest.FromBytes([]byte{landmarkContents}) + + for _, check := range tt.checks { + check(t, newStargz, tocDigest, dgstMap, cl) + } + }) + } + } + } + } +} + +// checkStargzTOC checks the TOC JSON of the passed stargz has the expected +// digest and contains valid chunks. It walks all entries in the stargz and +// checks all chunk digests stored to the TOC JSON match the actual contents. +func checkStargzTOC(t *testing.T, sgzData []byte, tocDigest digest.Digest, dgstMap map[string]digest.Digest, controller TestingController) { + sgz, err := Open( + io.NewSectionReader(bytes.NewReader(sgzData), 0, int64(len(sgzData))), + WithDecompressors(controller), + ) + if err != nil { + t.Errorf("failed to parse converted stargz: %v", err) + return + } + digestMapTOC, err := listDigests(io.NewSectionReader( + bytes.NewReader(sgzData), 0, int64(len(sgzData))), + controller, + ) + if err != nil { + t.Fatalf("failed to list digest: %v", err) + } + found := make(map[string]bool) + for id := range dgstMap { + found[id] = false + } + zr, err := controller.Reader(bytes.NewReader(sgzData)) + if err != nil { + t.Fatalf("failed to decompress converted stargz: %v", err) + } + defer zr.Close() + tr := tar.NewReader(zr) + for { + h, err := tr.Next() + if err != nil { + if err != io.EOF { + t.Errorf("failed to read tar entry: %v", err) + return + } + break + } + if h.Name == TOCTarName { + // Check the digest of TOC JSON based on the actual contents + // It's sure that TOC JSON exists in this archive because + // Open succeeded. + dgstr := digest.Canonical.Digester() + if _, err := io.Copy(dgstr.Hash(), tr); err != nil { + t.Fatalf("failed to calculate digest of TOC JSON: %v", + err) + } + if dgstr.Digest() != tocDigest { + t.Errorf("invalid TOC JSON %q; want %q", tocDigest, dgstr.Digest()) + } + continue + } + if _, ok := sgz.Lookup(h.Name); !ok { + t.Errorf("lost stargz entry %q in the converted TOC", h.Name) + return + } + var n int64 + for n < h.Size { + ce, ok := sgz.ChunkEntryForOffset(h.Name, n) + if !ok { + t.Errorf("lost chunk %q(offset=%d) in the converted TOC", + h.Name, n) + return + } + + // Get the original digest to make sure the file contents are kept unchanged + // from the original tar, during the whole conversion steps. + id := chunkID(h.Name, n, ce.ChunkSize) + want, ok := dgstMap[id] + if !ok { + t.Errorf("Unexpected chunk %q(offset=%d,size=%d): %v", + h.Name, n, ce.ChunkSize, dgstMap) + return + } + found[id] = true + + // Check the file contents + dgstr := digest.Canonical.Digester() + if _, err := io.CopyN(dgstr.Hash(), tr, ce.ChunkSize); err != nil { + t.Fatalf("failed to calculate digest of %q (offset=%d,size=%d)", + h.Name, n, ce.ChunkSize) + } + if want != dgstr.Digest() { + t.Errorf("Invalid contents in converted stargz %q: %q; want %q", + h.Name, dgstr.Digest(), want) + return + } + + // Check the digest stored in TOC JSON + dgstTOC, ok := digestMapTOC[ce.Offset] + if !ok { + t.Errorf("digest of %q(offset=%d,size=%d,chunkOffset=%d) isn't registered", + h.Name, ce.Offset, ce.ChunkSize, ce.ChunkOffset) + } + if want != dgstTOC { + t.Errorf("Invalid digest in TOCEntry %q: %q; want %q", + h.Name, dgstTOC, want) + return + } + + n += ce.ChunkSize + } + } + + for id, ok := range found { + if !ok { + t.Errorf("required chunk %q not found in the converted stargz: %v", id, found) + } + } +} + +// checkVerifyTOC checks the verification works for the TOC JSON of the passed +// stargz. It walks all entries in the stargz and checks the verifications for +// all chunks work. +func checkVerifyTOC(t *testing.T, sgzData []byte, tocDigest digest.Digest, dgstMap map[string]digest.Digest, controller TestingController) { + sgz, err := Open( + io.NewSectionReader(bytes.NewReader(sgzData), 0, int64(len(sgzData))), + WithDecompressors(controller), + ) + if err != nil { + t.Errorf("failed to parse converted stargz: %v", err) + return + } + ev, err := sgz.VerifyTOC(tocDigest) + if err != nil { + t.Errorf("failed to verify stargz: %v", err) + return + } + + found := make(map[string]bool) + for id := range dgstMap { + found[id] = false + } + zr, err := controller.Reader(bytes.NewReader(sgzData)) + if err != nil { + t.Fatalf("failed to decompress converted stargz: %v", err) + } + defer zr.Close() + tr := tar.NewReader(zr) + for { + h, err := tr.Next() + if err != nil { + if err != io.EOF { + t.Errorf("failed to read tar entry: %v", err) + return + } + break + } + if h.Name == TOCTarName { + continue + } + if _, ok := sgz.Lookup(h.Name); !ok { + t.Errorf("lost stargz entry %q in the converted TOC", h.Name) + return + } + var n int64 + for n < h.Size { + ce, ok := sgz.ChunkEntryForOffset(h.Name, n) + if !ok { + t.Errorf("lost chunk %q(offset=%d) in the converted TOC", + h.Name, n) + return + } + + v, err := ev.Verifier(ce) + if err != nil { + t.Errorf("failed to get verifier for %q(offset=%d)", h.Name, n) + } + + found[chunkID(h.Name, n, ce.ChunkSize)] = true + + // Check the file contents + if _, err := io.CopyN(v, tr, ce.ChunkSize); err != nil { + t.Fatalf("failed to get chunk of %q (offset=%d,size=%d)", + h.Name, n, ce.ChunkSize) + } + if !v.Verified() { + t.Errorf("Invalid contents in converted stargz %q (should be succeeded)", + h.Name) + return + } + n += ce.ChunkSize + } + } + + for id, ok := range found { + if !ok { + t.Errorf("required chunk %q not found in the converted stargz: %v", id, found) + } + } +} + +// checkVerifyInvalidTOCEntryFail checks if misconfigured TOC JSON can be +// detected during the verification and the verification returns an error. +func checkVerifyInvalidTOCEntryFail(filename string) check { + return func(t *testing.T, sgzData []byte, tocDigest digest.Digest, dgstMap map[string]digest.Digest, controller TestingController) { + funcs := map[string]rewriteFunc{ + "lost digest in a entry": func(t *testing.T, toc *JTOC, sgz *io.SectionReader) { + var found bool + for _, e := range toc.Entries { + if cleanEntryName(e.Name) == filename { + if e.Type != "reg" && e.Type != "chunk" { + t.Fatalf("entry %q to break must be regfile or chunk", filename) + } + if e.ChunkDigest == "" { + t.Fatalf("entry %q is already invalid", filename) + } + e.ChunkDigest = "" + found = true + } + } + if !found { + t.Fatalf("rewrite target not found") + } + }, + "duplicated entry offset": func(t *testing.T, toc *JTOC, sgz *io.SectionReader) { + var ( + sampleEntry *TOCEntry + targetEntry *TOCEntry + ) + for _, e := range toc.Entries { + if e.Type == "reg" || e.Type == "chunk" { + if cleanEntryName(e.Name) == filename { + targetEntry = e + } else { + sampleEntry = e + } + } + } + if sampleEntry == nil { + t.Fatalf("TOC must contain at least one regfile or chunk entry other than the rewrite target") + } + if targetEntry == nil { + t.Fatalf("rewrite target not found") + } + targetEntry.Offset = sampleEntry.Offset + }, + } + + for name, rFunc := range funcs { + t.Run(name, func(t *testing.T) { + newSgz, newTocDigest := rewriteTOCJSON(t, io.NewSectionReader(bytes.NewReader(sgzData), 0, int64(len(sgzData))), rFunc, controller) + buf := new(bytes.Buffer) + if _, err := io.Copy(buf, newSgz); err != nil { + t.Fatalf("failed to get converted stargz") + } + isgz := buf.Bytes() + + sgz, err := Open( + io.NewSectionReader(bytes.NewReader(isgz), 0, int64(len(isgz))), + WithDecompressors(controller), + ) + if err != nil { + t.Fatalf("failed to parse converted stargz: %v", err) + return + } + _, err = sgz.VerifyTOC(newTocDigest) + if err == nil { + t.Errorf("must fail for invalid TOC") + return + } + }) + } + } +} + +// checkVerifyInvalidStargzFail checks if the verification detects that the +// given stargz file doesn't match to the expected digest and returns error. +func checkVerifyInvalidStargzFail(invalid *io.SectionReader) check { + return func(t *testing.T, sgzData []byte, tocDigest digest.Digest, dgstMap map[string]digest.Digest, controller TestingController) { + rc, err := Build(invalid, WithChunkSize(chunkSize), WithCompression(controller)) + if err != nil { + t.Fatalf("failed to convert stargz: %v", err) + } + defer rc.Close() + buf := new(bytes.Buffer) + if _, err := io.Copy(buf, rc); err != nil { + t.Fatalf("failed to copy built stargz blob: %v", err) + } + mStargz := buf.Bytes() + + sgz, err := Open( + io.NewSectionReader(bytes.NewReader(mStargz), 0, int64(len(mStargz))), + WithDecompressors(controller), + ) + if err != nil { + t.Fatalf("failed to parse converted stargz: %v", err) + return + } + _, err = sgz.VerifyTOC(tocDigest) + if err == nil { + t.Errorf("must fail for invalid TOC") + return + } + } +} + +// checkVerifyBrokenContentFail checks if the verifier detects broken contents +// that doesn't match to the expected digest and returns error. +func checkVerifyBrokenContentFail(filename string) check { + return func(t *testing.T, sgzData []byte, tocDigest digest.Digest, dgstMap map[string]digest.Digest, controller TestingController) { + // Parse stargz file + sgz, err := Open( + io.NewSectionReader(bytes.NewReader(sgzData), 0, int64(len(sgzData))), + WithDecompressors(controller), + ) + if err != nil { + t.Fatalf("failed to parse converted stargz: %v", err) + return + } + ev, err := sgz.VerifyTOC(tocDigest) + if err != nil { + t.Fatalf("failed to verify stargz: %v", err) + return + } + + // Open the target file + sr, err := sgz.OpenFile(filename) + if err != nil { + t.Fatalf("failed to open file %q", filename) + } + ce, ok := sgz.ChunkEntryForOffset(filename, 0) + if !ok { + t.Fatalf("lost chunk %q(offset=%d) in the converted TOC", filename, 0) + return + } + if ce.ChunkSize == 0 { + t.Fatalf("file mustn't be empty") + return + } + data := make([]byte, ce.ChunkSize) + if _, err := sr.ReadAt(data, ce.ChunkOffset); err != nil { + t.Errorf("failed to get data of a chunk of %q(offset=%q)", + filename, ce.ChunkOffset) + } + + // Check the broken chunk (must fail) + v, err := ev.Verifier(ce) + if err != nil { + t.Fatalf("failed to get verifier for %q", filename) + } + broken := append([]byte{^data[0]}, data[1:]...) + if _, err := io.CopyN(v, bytes.NewReader(broken), ce.ChunkSize); err != nil { + t.Fatalf("failed to get chunk of %q (offset=%d,size=%d)", + filename, ce.ChunkOffset, ce.ChunkSize) + } + if v.Verified() { + t.Errorf("verification must fail for broken file chunk %q(org:%q,broken:%q)", + filename, data, broken) + } + } +} + +func chunkID(name string, offset, size int64) string { + return fmt.Sprintf("%s-%d-%d", cleanEntryName(name), offset, size) +} + +type rewriteFunc func(t *testing.T, toc *JTOC, sgz *io.SectionReader) + +func rewriteTOCJSON(t *testing.T, sgz *io.SectionReader, rewrite rewriteFunc, controller TestingController) (newSgz io.Reader, tocDigest digest.Digest) { + decodedJTOC, jtocOffset, err := parseStargz(sgz, controller) + if err != nil { + t.Fatalf("failed to extract TOC JSON: %v", err) + } + + rewrite(t, decodedJTOC, sgz) + + tocFooter, tocDigest, err := tocAndFooter(controller, decodedJTOC, jtocOffset) + if err != nil { + t.Fatalf("failed to create toc and footer: %v", err) + } + + // Reconstruct stargz file with the modified TOC JSON + if _, err := sgz.Seek(0, io.SeekStart); err != nil { + t.Fatalf("failed to reset the seek position of stargz: %v", err) + } + return io.MultiReader( + io.LimitReader(sgz, jtocOffset), // Original stargz (before TOC JSON) + tocFooter, // Rewritten TOC and footer + ), tocDigest +} + +func listDigests(sgz *io.SectionReader, controller TestingController) (map[int64]digest.Digest, error) { + decodedJTOC, _, err := parseStargz(sgz, controller) + if err != nil { + return nil, err + } + digestMap := make(map[int64]digest.Digest) + for _, e := range decodedJTOC.Entries { + if e.Type == "reg" || e.Type == "chunk" { + if e.Type == "reg" && e.Size == 0 { + continue // ignores empty file + } + if e.ChunkDigest == "" { + return nil, fmt.Errorf("ChunkDigest of %q(off=%d) not found in TOC JSON", + e.Name, e.Offset) + } + d, err := digest.Parse(e.ChunkDigest) + if err != nil { + return nil, err + } + digestMap[e.Offset] = d + } + } + return digestMap, nil +} + +func parseStargz(sgz *io.SectionReader, controller TestingController) (decodedJTOC *JTOC, jtocOffset int64, err error) { + fSize := controller.FooterSize() + footer := make([]byte, fSize) + if _, err := sgz.ReadAt(footer, sgz.Size()-fSize); err != nil { + return nil, 0, errors.Wrap(err, "error reading footer") + } + tocOffset, _, err := controller.ParseFooter(footer[positive(int64(len(footer))-fSize):]) + if err != nil { + return nil, 0, errors.Wrapf(err, "failed to parse footer") + } + + // Decode the TOC JSON + tocReader := io.NewSectionReader(sgz, tocOffset, sgz.Size()-tocOffset-fSize) + decodedJTOC, _, err = controller.ParseTOC(tocReader) + if err != nil { + return nil, 0, errors.Wrap(err, "failed to parse TOC") + } + return decodedJTOC, tocOffset, nil +} + +func testWriteAndOpen(t *testing.T, controllers ...TestingController) { + const content = "Some contents" + invalidUtf8 := "\xff\xfe\xfd" + + xAttrFile := xAttr{"foo": "bar", "invalid-utf8": invalidUtf8} + sampleOwner := owner{uid: 50, gid: 100} + + tests := []struct { + name string + chunkSize int + in []tarEntry + want []stargzCheck + wantNumGz int // expected number of streams + }{ + { + name: "empty", + in: tarOf(), + wantNumGz: 2, // TOC + footer + want: checks( + numTOCEntries(0), + ), + }, + { + name: "1dir_1empty_file", + in: tarOf( + dir("foo/"), + file("foo/bar.txt", ""), + ), + wantNumGz: 3, // dir, TOC, footer + want: checks( + numTOCEntries(2), + hasDir("foo/"), + hasFileLen("foo/bar.txt", 0), + entryHasChildren("foo", "bar.txt"), + hasFileDigest("foo/bar.txt", digestFor("")), + ), + }, + { + name: "1dir_1file", + in: tarOf( + dir("foo/"), + file("foo/bar.txt", content, xAttrFile), + ), + wantNumGz: 4, // var dir, foo.txt alone, TOC, footer + want: checks( + numTOCEntries(2), + hasDir("foo/"), + hasFileLen("foo/bar.txt", len(content)), + hasFileDigest("foo/bar.txt", digestFor(content)), + hasFileContentsRange("foo/bar.txt", 0, content), + hasFileContentsRange("foo/bar.txt", 1, content[1:]), + entryHasChildren("", "foo"), + entryHasChildren("foo", "bar.txt"), + hasFileXattrs("foo/bar.txt", "foo", "bar"), + hasFileXattrs("foo/bar.txt", "invalid-utf8", invalidUtf8), + ), + }, + { + name: "2meta_2file", + in: tarOf( + dir("bar/", sampleOwner), + dir("foo/", sampleOwner), + file("foo/bar.txt", content, sampleOwner), + ), + wantNumGz: 4, // both dirs, foo.txt alone, TOC, footer + want: checks( + numTOCEntries(3), + hasDir("bar/"), + hasDir("foo/"), + hasFileLen("foo/bar.txt", len(content)), + entryHasChildren("", "bar", "foo"), + entryHasChildren("foo", "bar.txt"), + hasChunkEntries("foo/bar.txt", 1), + hasEntryOwner("bar/", sampleOwner), + hasEntryOwner("foo/", sampleOwner), + hasEntryOwner("foo/bar.txt", sampleOwner), + ), + }, + { + name: "3dir", + in: tarOf( + dir("bar/"), + dir("foo/"), + dir("foo/bar/"), + ), + wantNumGz: 3, // 3 dirs, TOC, footer + want: checks( + hasDirLinkCount("bar/", 2), + hasDirLinkCount("foo/", 3), + hasDirLinkCount("foo/bar/", 2), + ), + }, + { + name: "symlink", + in: tarOf( + dir("foo/"), + symlink("foo/bar", "../../x"), + ), + wantNumGz: 3, // metas + TOC + footer + want: checks( + numTOCEntries(2), + hasSymlink("foo/bar", "../../x"), + entryHasChildren("", "foo"), + entryHasChildren("foo", "bar"), + ), + }, + { + name: "chunked_file", + chunkSize: 4, + in: tarOf( + dir("foo/"), + file("foo/big.txt", "This "+"is s"+"uch "+"a bi"+"g fi"+"le"), + ), + wantNumGz: 9, + want: checks( + numTOCEntries(7), // 1 for foo dir, 6 for the foo/big.txt file + hasDir("foo/"), + hasFileLen("foo/big.txt", len("This is such a big file")), + hasFileDigest("foo/big.txt", digestFor("This is such a big file")), + hasFileContentsRange("foo/big.txt", 0, "This is such a big file"), + hasFileContentsRange("foo/big.txt", 1, "his is such a big file"), + hasFileContentsRange("foo/big.txt", 2, "is is such a big file"), + hasFileContentsRange("foo/big.txt", 3, "s is such a big file"), + hasFileContentsRange("foo/big.txt", 4, " is such a big file"), + hasFileContentsRange("foo/big.txt", 5, "is such a big file"), + hasFileContentsRange("foo/big.txt", 6, "s such a big file"), + hasFileContentsRange("foo/big.txt", 7, " such a big file"), + hasFileContentsRange("foo/big.txt", 8, "such a big file"), + hasFileContentsRange("foo/big.txt", 9, "uch a big file"), + hasFileContentsRange("foo/big.txt", 10, "ch a big file"), + hasFileContentsRange("foo/big.txt", 11, "h a big file"), + hasFileContentsRange("foo/big.txt", 12, " a big file"), + hasFileContentsRange("foo/big.txt", len("This is such a big file")-1, ""), + hasChunkEntries("foo/big.txt", 6), + ), + }, + { + name: "recursive", + in: tarOf( + dir("/", sampleOwner), + dir("bar/", sampleOwner), + dir("foo/", sampleOwner), + file("foo/bar.txt", content, sampleOwner), + ), + wantNumGz: 4, // dirs, bar.txt alone, TOC, footer + want: checks( + maxDepth(2), // 0: root directory, 1: "foo/", 2: "bar.txt" + ), + }, + { + name: "block_char_fifo", + in: tarOf( + tarEntryFunc(func(w *tar.Writer, prefix string) error { + return w.WriteHeader(&tar.Header{ + Name: prefix + "b", + Typeflag: tar.TypeBlock, + Devmajor: 123, + Devminor: 456, + }) + }), + tarEntryFunc(func(w *tar.Writer, prefix string) error { + return w.WriteHeader(&tar.Header{ + Name: prefix + "c", + Typeflag: tar.TypeChar, + Devmajor: 111, + Devminor: 222, + }) + }), + tarEntryFunc(func(w *tar.Writer, prefix string) error { + return w.WriteHeader(&tar.Header{ + Name: prefix + "f", + Typeflag: tar.TypeFifo, + }) + }), + ), + wantNumGz: 3, + want: checks( + lookupMatch("b", &TOCEntry{Name: "b", Type: "block", DevMajor: 123, DevMinor: 456, NumLink: 1}), + lookupMatch("c", &TOCEntry{Name: "c", Type: "char", DevMajor: 111, DevMinor: 222, NumLink: 1}), + lookupMatch("f", &TOCEntry{Name: "f", Type: "fifo", NumLink: 1}), + ), + }, + { + name: "modes", + in: tarOf( + dir("foo1/", 0755|os.ModeDir|os.ModeSetgid), + file("foo1/bar1", content, 0700|os.ModeSetuid), + file("foo1/bar2", content, 0755|os.ModeSetgid), + dir("foo2/", 0755|os.ModeDir|os.ModeSticky), + file("foo2/bar3", content, 0755|os.ModeSticky), + dir("foo3/", 0755|os.ModeDir), + file("foo3/bar4", content, os.FileMode(0700)), + file("foo3/bar5", content, os.FileMode(0755)), + ), + wantNumGz: 8, // dir, bar1 alone, bar2 alone + dir, bar3 alone + dir, bar4 alone, bar5 alone, TOC, footer + want: checks( + hasMode("foo1/", 0755|os.ModeDir|os.ModeSetgid), + hasMode("foo1/bar1", 0700|os.ModeSetuid), + hasMode("foo1/bar2", 0755|os.ModeSetgid), + hasMode("foo2/", 0755|os.ModeDir|os.ModeSticky), + hasMode("foo2/bar3", 0755|os.ModeSticky), + hasMode("foo3/", 0755|os.ModeDir), + hasMode("foo3/bar4", os.FileMode(0700)), + hasMode("foo3/bar5", os.FileMode(0755)), + ), + }, + } + + for _, tt := range tests { + for _, cl := range controllers { + cl := cl + for _, prefix := range allowedPrefix { + prefix := prefix + t.Run(tt.name+"-"+fmt.Sprintf("compression=%v-prefix=%q", cl, prefix), func(t *testing.T) { + tr, cancel := buildTar(t, tt.in, prefix) + defer cancel() + var stargzBuf bytes.Buffer + w := NewWriterWithCompressor(&stargzBuf, cl) + w.ChunkSize = tt.chunkSize + if err := w.AppendTar(tr); err != nil { + t.Fatalf("Append: %v", err) + } + if _, err := w.Close(); err != nil { + t.Fatalf("Writer.Close: %v", err) + } + b := stargzBuf.Bytes() + + diffID := w.DiffID() + wantDiffID := cl.DiffIDOf(t, b) + if diffID != wantDiffID { + t.Errorf("DiffID = %q; want %q", diffID, wantDiffID) + } + + got := cl.CountStreams(t, b) + if got != tt.wantNumGz { + t.Errorf("number of streams = %d; want %d", got, tt.wantNumGz) + } + + telemetry, checkCalled := newCalledTelemetry() + r, err := Open( + io.NewSectionReader(bytes.NewReader(b), 0, int64(len(b))), + WithDecompressors(cl), + WithTelemetry(telemetry), + ) + if err != nil { + t.Fatalf("stargz.Open: %v", err) + } + if err := checkCalled(); err != nil { + t.Errorf("telemetry failure: %v", err) + } + for _, want := range tt.want { + want.check(t, r) + } + }) + } + } + } +} + +func newCalledTelemetry() (telemetry *Telemetry, check func() error) { + var getFooterLatencyCalled bool + var getTocLatencyCalled bool + var deserializeTocLatencyCalled bool + return &Telemetry{ + func(time.Time) { getFooterLatencyCalled = true }, + func(time.Time) { getTocLatencyCalled = true }, + func(time.Time) { deserializeTocLatencyCalled = true }, + }, func() error { + var allErr []error + if !getFooterLatencyCalled { + allErr = append(allErr, fmt.Errorf("metrics GetFooterLatency isn't called")) + } + if !getTocLatencyCalled { + allErr = append(allErr, fmt.Errorf("metrics GetTocLatency isn't called")) + } + if !deserializeTocLatencyCalled { + allErr = append(allErr, fmt.Errorf("metrics DeserializeTocLatency isn't called")) + } + return errorutil.Aggregate(allErr) + } +} + +func digestFor(content string) string { + sum := sha256.Sum256([]byte(content)) + return fmt.Sprintf("sha256:%x", sum) +} + +type numTOCEntries int + +func (n numTOCEntries) check(t *testing.T, r *Reader) { + if r.toc == nil { + t.Fatal("nil TOC") + } + if got, want := len(r.toc.Entries), int(n); got != want { + t.Errorf("got %d TOC entries; want %d", got, want) + } + t.Logf("got TOC entries:") + for i, ent := range r.toc.Entries { + entj, _ := json.Marshal(ent) + t.Logf(" [%d]: %s\n", i, entj) + } + if t.Failed() { + t.FailNow() + } +} + +func checks(s ...stargzCheck) []stargzCheck { return s } + +type stargzCheck interface { + check(t *testing.T, r *Reader) +} + +type stargzCheckFn func(*testing.T, *Reader) + +func (f stargzCheckFn) check(t *testing.T, r *Reader) { f(t, r) } + +func maxDepth(max int) stargzCheck { + return stargzCheckFn(func(t *testing.T, r *Reader) { + e, ok := r.Lookup("") + if !ok { + t.Fatal("root directory not found") + } + d, err := getMaxDepth(t, e, 0, 10*max) + if err != nil { + t.Errorf("failed to get max depth (wanted %d): %v", max, err) + return + } + if d != max { + t.Errorf("invalid depth %d; want %d", d, max) + return + } + }) +} + +func getMaxDepth(t *testing.T, e *TOCEntry, current, limit int) (max int, rErr error) { + if current > limit { + return -1, fmt.Errorf("walkMaxDepth: exceeds limit: current:%d > limit:%d", + current, limit) + } + max = current + e.ForeachChild(func(baseName string, ent *TOCEntry) bool { + t.Logf("%q(basename:%q) is child of %q\n", ent.Name, baseName, e.Name) + d, err := getMaxDepth(t, ent, current+1, limit) + if err != nil { + rErr = err + return false + } + if d > max { + max = d + } + return true + }) + return +} + +func hasFileLen(file string, wantLen int) stargzCheck { + return stargzCheckFn(func(t *testing.T, r *Reader) { + for _, ent := range r.toc.Entries { + if ent.Name == file { + if ent.Type != "reg" { + t.Errorf("file type of %q is %q; want \"reg\"", file, ent.Type) + } else if ent.Size != int64(wantLen) { + t.Errorf("file size of %q = %d; want %d", file, ent.Size, wantLen) + } + return + } + } + t.Errorf("file %q not found", file) + }) +} + +func hasFileXattrs(file, name, value string) stargzCheck { + return stargzCheckFn(func(t *testing.T, r *Reader) { + for _, ent := range r.toc.Entries { + if ent.Name == file { + if ent.Type != "reg" { + t.Errorf("file type of %q is %q; want \"reg\"", file, ent.Type) + } + if ent.Xattrs == nil { + t.Errorf("file %q has no xattrs", file) + return + } + valueFound, found := ent.Xattrs[name] + if !found { + t.Errorf("file %q has no xattr %q", file, name) + return + } + if string(valueFound) != value { + t.Errorf("file %q has xattr %q with value %q instead of %q", file, name, valueFound, value) + } + + return + } + } + t.Errorf("file %q not found", file) + }) +} + +func hasFileDigest(file string, digest string) stargzCheck { + return stargzCheckFn(func(t *testing.T, r *Reader) { + ent, ok := r.Lookup(file) + if !ok { + t.Fatalf("didn't find TOCEntry for file %q", file) + } + if ent.Digest != digest { + t.Fatalf("Digest(%q) = %q, want %q", file, ent.Digest, digest) + } + }) +} + +func hasFileContentsRange(file string, offset int, want string) stargzCheck { + return stargzCheckFn(func(t *testing.T, r *Reader) { + f, err := r.OpenFile(file) + if err != nil { + t.Fatal(err) + } + got := make([]byte, len(want)) + n, err := f.ReadAt(got, int64(offset)) + if err != nil { + t.Fatalf("ReadAt(len %d, offset %d) = %v, %v", len(got), offset, n, err) + } + if string(got) != want { + t.Fatalf("ReadAt(len %d, offset %d) = %q, want %q", len(got), offset, got, want) + } + }) +} + +func hasChunkEntries(file string, wantChunks int) stargzCheck { + return stargzCheckFn(func(t *testing.T, r *Reader) { + ent, ok := r.Lookup(file) + if !ok { + t.Fatalf("no file for %q", file) + } + if ent.Type != "reg" { + t.Fatalf("file %q has unexpected type %q; want reg", file, ent.Type) + } + chunks := r.getChunks(ent) + if len(chunks) != wantChunks { + t.Errorf("len(r.getChunks(%q)) = %d; want %d", file, len(chunks), wantChunks) + return + } + f := chunks[0] + + var gotChunks []*TOCEntry + var last *TOCEntry + for off := int64(0); off < f.Size; off++ { + e, ok := r.ChunkEntryForOffset(file, off) + if !ok { + t.Errorf("no ChunkEntryForOffset at %d", off) + return + } + if last != e { + gotChunks = append(gotChunks, e) + last = e + } + } + if !reflect.DeepEqual(chunks, gotChunks) { + t.Errorf("gotChunks=%d, want=%d; contents mismatch", len(gotChunks), wantChunks) + } + + // And verify the NextOffset + for i := 0; i < len(gotChunks)-1; i++ { + ci := gotChunks[i] + cnext := gotChunks[i+1] + if ci.NextOffset() != cnext.Offset { + t.Errorf("chunk %d NextOffset %d != next chunk's Offset of %d", i, ci.NextOffset(), cnext.Offset) + } + } + }) +} + +func entryHasChildren(dir string, want ...string) stargzCheck { + return stargzCheckFn(func(t *testing.T, r *Reader) { + want := append([]string(nil), want...) + var got []string + ent, ok := r.Lookup(dir) + if !ok { + t.Fatalf("didn't find TOCEntry for dir node %q", dir) + } + for baseName := range ent.children { + got = append(got, baseName) + } + sort.Strings(got) + sort.Strings(want) + if !reflect.DeepEqual(got, want) { + t.Errorf("children of %q = %q; want %q", dir, got, want) + } + }) +} + +func hasDir(file string) stargzCheck { + return stargzCheckFn(func(t *testing.T, r *Reader) { + for _, ent := range r.toc.Entries { + if ent.Name == cleanEntryName(file) { + if ent.Type != "dir" { + t.Errorf("file type of %q is %q; want \"dir\"", file, ent.Type) + } + return + } + } + t.Errorf("directory %q not found", file) + }) +} + +func hasDirLinkCount(file string, count int) stargzCheck { + return stargzCheckFn(func(t *testing.T, r *Reader) { + for _, ent := range r.toc.Entries { + if ent.Name == cleanEntryName(file) { + if ent.Type != "dir" { + t.Errorf("file type of %q is %q; want \"dir\"", file, ent.Type) + return + } + if ent.NumLink != count { + t.Errorf("link count of %q = %d; want %d", file, ent.NumLink, count) + } + return + } + } + t.Errorf("directory %q not found", file) + }) +} + +func hasMode(file string, mode os.FileMode) stargzCheck { + return stargzCheckFn(func(t *testing.T, r *Reader) { + for _, ent := range r.toc.Entries { + if ent.Name == cleanEntryName(file) { + if ent.Stat().Mode() != mode { + t.Errorf("invalid mode: got %v; want %v", ent.Stat().Mode(), mode) + return + } + return + } + } + t.Errorf("file %q not found", file) + }) +} + +func hasSymlink(file, target string) stargzCheck { + return stargzCheckFn(func(t *testing.T, r *Reader) { + for _, ent := range r.toc.Entries { + if ent.Name == file { + if ent.Type != "symlink" { + t.Errorf("file type of %q is %q; want \"symlink\"", file, ent.Type) + } else if ent.LinkName != target { + t.Errorf("link target of symlink %q is %q; want %q", file, ent.LinkName, target) + } + return + } + } + t.Errorf("symlink %q not found", file) + }) +} + +func lookupMatch(name string, want *TOCEntry) stargzCheck { + return stargzCheckFn(func(t *testing.T, r *Reader) { + e, ok := r.Lookup(name) + if !ok { + t.Fatalf("failed to Lookup entry %q", name) + } + if !reflect.DeepEqual(e, want) { + t.Errorf("entry %q mismatch.\n got: %+v\nwant: %+v\n", name, e, want) + } + + }) +} + +func hasEntryOwner(entry string, owner owner) stargzCheck { + return stargzCheckFn(func(t *testing.T, r *Reader) { + ent, ok := r.Lookup(strings.TrimSuffix(entry, "/")) + if !ok { + t.Errorf("entry %q not found", entry) + return + } + if ent.UID != owner.uid || ent.GID != owner.gid { + t.Errorf("entry %q has invalid owner (uid:%d, gid:%d) instead of (uid:%d, gid:%d)", entry, ent.UID, ent.GID, owner.uid, owner.gid) + return + } + }) +} + +func tarOf(s ...tarEntry) []tarEntry { return s } + +type tarEntry interface { + appendTar(tw *tar.Writer, prefix string) error +} + +type tarEntryFunc func(*tar.Writer, string) error + +func (f tarEntryFunc) appendTar(tw *tar.Writer, prefix string) error { return f(tw, prefix) } + +func buildTar(t *testing.T, ents []tarEntry, prefix string) (r io.Reader, cancel func()) { + pr, pw := io.Pipe() + go func() { + tw := tar.NewWriter(pw) + for _, ent := range ents { + if err := ent.appendTar(tw, prefix); err != nil { + t.Errorf("building input tar: %v", err) + pw.Close() + return + } + } + if err := tw.Close(); err != nil { + t.Errorf("closing write of input tar: %v", err) + } + pw.Close() + }() + return pr, func() { go pr.Close(); go pw.Close() } +} + +func buildTarStatic(t *testing.T, ents []tarEntry, prefix string) *io.SectionReader { + buf := new(bytes.Buffer) + tw := tar.NewWriter(buf) + for _, ent := range ents { + if err := ent.appendTar(tw, prefix); err != nil { + t.Fatalf("building input tar: %v", err) + } + } + if err := tw.Close(); err != nil { + t.Errorf("closing write of input tar: %v", err) + } + data := buf.Bytes() + return io.NewSectionReader(bytes.NewReader(data), 0, int64(len(data))) +} + +func dir(name string, opts ...interface{}) tarEntry { + return tarEntryFunc(func(tw *tar.Writer, prefix string) error { + var o owner + mode := os.FileMode(0755) + for _, opt := range opts { + switch v := opt.(type) { + case owner: + o = v + case os.FileMode: + mode = v + default: + return errors.New("unsupported opt") + } + } + if !strings.HasSuffix(name, "/") { + panic(fmt.Sprintf("missing trailing slash in dir %q ", name)) + } + tm, err := fileModeToTarMode(mode) + if err != nil { + return err + } + return tw.WriteHeader(&tar.Header{ + Typeflag: tar.TypeDir, + Name: prefix + name, + Mode: tm, + Uid: o.uid, + Gid: o.gid, + }) + }) +} + +// xAttr are extended attributes to set on test files created with the file func. +type xAttr map[string]string + +// owner is owner ot set on test files and directories with the file and dir functions. +type owner struct { + uid int + gid int +} + +func file(name, contents string, opts ...interface{}) tarEntry { + return tarEntryFunc(func(tw *tar.Writer, prefix string) error { + var xattrs xAttr + var o owner + mode := os.FileMode(0644) + for _, opt := range opts { + switch v := opt.(type) { + case xAttr: + xattrs = v + case owner: + o = v + case os.FileMode: + mode = v + default: + return errors.New("unsupported opt") + } + } + if strings.HasSuffix(name, "/") { + return fmt.Errorf("bogus trailing slash in file %q", name) + } + tm, err := fileModeToTarMode(mode) + if err != nil { + return err + } + if err := tw.WriteHeader(&tar.Header{ + Typeflag: tar.TypeReg, + Name: prefix + name, + Mode: tm, + Xattrs: xattrs, + Size: int64(len(contents)), + Uid: o.uid, + Gid: o.gid, + }); err != nil { + return err + } + _, err = io.WriteString(tw, contents) + return err + }) +} + +func symlink(name, target string) tarEntry { + return tarEntryFunc(func(tw *tar.Writer, prefix string) error { + return tw.WriteHeader(&tar.Header{ + Typeflag: tar.TypeSymlink, + Name: prefix + name, + Linkname: target, + Mode: 0644, + }) + }) +} + +func link(name string, linkname string) tarEntry { + now := time.Now() + return tarEntryFunc(func(w *tar.Writer, prefix string) error { + return w.WriteHeader(&tar.Header{ + Typeflag: tar.TypeLink, + Name: prefix + name, + Linkname: linkname, + ModTime: now, + AccessTime: now, + ChangeTime: now, + }) + }) +} + +func chardev(name string, major, minor int64) tarEntry { + now := time.Now() + return tarEntryFunc(func(w *tar.Writer, prefix string) error { + return w.WriteHeader(&tar.Header{ + Typeflag: tar.TypeChar, + Name: prefix + name, + Devmajor: major, + Devminor: minor, + ModTime: now, + AccessTime: now, + ChangeTime: now, + }) + }) +} + +func blockdev(name string, major, minor int64) tarEntry { + now := time.Now() + return tarEntryFunc(func(w *tar.Writer, prefix string) error { + return w.WriteHeader(&tar.Header{ + Typeflag: tar.TypeBlock, + Name: prefix + name, + Devmajor: major, + Devminor: minor, + ModTime: now, + AccessTime: now, + ChangeTime: now, + }) + }) +} +func fifo(name string) tarEntry { + now := time.Now() + return tarEntryFunc(func(w *tar.Writer, prefix string) error { + return w.WriteHeader(&tar.Header{ + Typeflag: tar.TypeFifo, + Name: prefix + name, + ModTime: now, + AccessTime: now, + ChangeTime: now, + }) + }) +} + +func prefetchLandmark() tarEntry { + return tarEntryFunc(func(w *tar.Writer, prefix string) error { + if err := w.WriteHeader(&tar.Header{ + Name: PrefetchLandmark, + Typeflag: tar.TypeReg, + Size: int64(len([]byte{landmarkContents})), + }); err != nil { + return err + } + contents := []byte{landmarkContents} + if _, err := io.CopyN(w, bytes.NewReader(contents), int64(len(contents))); err != nil { + return err + } + return nil + }) +} + +func noPrefetchLandmark() tarEntry { + return tarEntryFunc(func(w *tar.Writer, prefix string) error { + if err := w.WriteHeader(&tar.Header{ + Name: NoPrefetchLandmark, + Typeflag: tar.TypeReg, + Size: int64(len([]byte{landmarkContents})), + }); err != nil { + return err + } + contents := []byte{landmarkContents} + if _, err := io.CopyN(w, bytes.NewReader(contents), int64(len(contents))); err != nil { + return err + } + return nil + }) +} + +func regDigest(t *testing.T, name string, contentStr string, digestMap map[string]digest.Digest) tarEntry { + if digestMap == nil { + t.Fatalf("digest map mustn't be nil") + } + content := []byte(contentStr) + + var n int64 + for n < int64(len(content)) { + size := int64(chunkSize) + remain := int64(len(content)) - n + if remain < size { + size = remain + } + dgstr := digest.Canonical.Digester() + if _, err := io.CopyN(dgstr.Hash(), bytes.NewReader(content[n:n+size]), size); err != nil { + t.Fatalf("failed to calculate digest of %q (name=%q,offset=%d,size=%d)", + string(content[n:n+size]), name, n, size) + } + digestMap[chunkID(name, n, size)] = dgstr.Digest() + n += size + } + + return tarEntryFunc(func(w *tar.Writer, prefix string) error { + if err := w.WriteHeader(&tar.Header{ + Typeflag: tar.TypeReg, + Name: prefix + name, + Size: int64(len(content)), + }); err != nil { + return err + } + if _, err := io.CopyN(w, bytes.NewReader(content), int64(len(content))); err != nil { + return err + } + return nil + }) +} + +func fileModeToTarMode(mode os.FileMode) (int64, error) { + h, err := tar.FileInfoHeader(fileInfoOnlyMode(mode), "") + if err != nil { + return 0, err + } + return h.Mode, nil +} + +// fileInfoOnlyMode is os.FileMode that populates only file mode. +type fileInfoOnlyMode os.FileMode + +func (f fileInfoOnlyMode) Name() string { return "" } +func (f fileInfoOnlyMode) Size() int64 { return 0 } +func (f fileInfoOnlyMode) Mode() os.FileMode { return os.FileMode(f) } +func (f fileInfoOnlyMode) ModTime() time.Time { return time.Now() } +func (f fileInfoOnlyMode) IsDir() bool { return os.FileMode(f).IsDir() } +func (f fileInfoOnlyMode) Sys() interface{} { return nil } diff --git a/vendor/github.com/containerd/stargz-snapshotter/estargz/types.go b/vendor/github.com/containerd/stargz-snapshotter/estargz/types.go new file mode 100644 index 000000000..1b1075a64 --- /dev/null +++ b/vendor/github.com/containerd/stargz-snapshotter/estargz/types.go @@ -0,0 +1,314 @@ +/* + Copyright The containerd Authors. + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. +*/ + +/* + Copyright 2019 The Go Authors. All rights reserved. + Use of this source code is governed by a BSD-style + license that can be found in the LICENSE file. +*/ + +package estargz + +import ( + "archive/tar" + "hash" + "io" + "os" + "path" + "time" + + digest "github.com/opencontainers/go-digest" +) + +const ( + // TOCTarName is the name of the JSON file in the tar archive in the + // table of contents gzip stream. + TOCTarName = "stargz.index.json" + + // FooterSize is the number of bytes in the footer + // + // The footer is an empty gzip stream with no compression and an Extra + // header of the form "%016xSTARGZ", where the 64 bit hex-encoded + // number is the offset to the gzip stream of JSON TOC. + // + // 51 comes from: + // + // 10 bytes gzip header + // 2 bytes XLEN (length of Extra field) = 26 (4 bytes header + 16 hex digits + len("STARGZ")) + // 2 bytes Extra: SI1 = 'S', SI2 = 'G' + // 2 bytes Extra: LEN = 22 (16 hex digits + len("STARGZ")) + // 22 bytes Extra: subfield = fmt.Sprintf("%016xSTARGZ", offsetOfTOC) + // 5 bytes flate header + // 8 bytes gzip footer + // (End of the eStargz blob) + // + // NOTE: For Extra fields, subfield IDs SI1='S' SI2='G' is used for eStargz. + FooterSize = 51 + + // legacyFooterSize is the number of bytes in the legacy stargz footer. + // + // 47 comes from: + // + // 10 byte gzip header + + // 2 byte (LE16) length of extra, encoding 22 (16 hex digits + len("STARGZ")) == "\x16\x00" + + // 22 bytes of extra (fmt.Sprintf("%016xSTARGZ", tocGzipOffset)) + // 5 byte flate header + // 8 byte gzip footer (two little endian uint32s: digest, size) + legacyFooterSize = 47 + + // TOCJSONDigestAnnotation is an annotation for an image layer. This stores the + // digest of the TOC JSON. + // This annotation is valid only when it is specified in `.[]layers.annotations` + // of an image manifest. + TOCJSONDigestAnnotation = "containerd.io/snapshot/stargz/toc.digest" + + // StoreUncompressedSizeAnnotation is an additional annotation key for eStargz to enable lazy + // pulling on containers/storage. Stargz Store is required to expose the layer's uncompressed size + // to the runtime but current OCI image doesn't ship this information by default. So we store this + // to the special annotation. + StoreUncompressedSizeAnnotation = "io.containers.estargz.uncompressed-size" + + // PrefetchLandmark is a file entry which indicates the end position of + // prefetch in the stargz file. + PrefetchLandmark = ".prefetch.landmark" + + // NoPrefetchLandmark is a file entry which indicates that no prefetch should + // occur in the stargz file. + NoPrefetchLandmark = ".no.prefetch.landmark" + + landmarkContents = 0xf +) + +// JTOC is the JSON-serialized table of contents index of the files in the stargz file. +type JTOC struct { + Version int `json:"version"` + Entries []*TOCEntry `json:"entries"` +} + +// TOCEntry is an entry in the stargz file's TOC (Table of Contents). +type TOCEntry struct { + // Name is the tar entry's name. It is the complete path + // stored in the tar file, not just the base name. + Name string `json:"name"` + + // Type is one of "dir", "reg", "symlink", "hardlink", "char", + // "block", "fifo", or "chunk". + // The "chunk" type is used for regular file data chunks past the first + // TOCEntry; the 2nd chunk and on have only Type ("chunk"), Offset, + // ChunkOffset, and ChunkSize populated. + Type string `json:"type"` + + // Size, for regular files, is the logical size of the file. + Size int64 `json:"size,omitempty"` + + // ModTime3339 is the modification time of the tar entry. Empty + // means zero or unknown. Otherwise it's in UTC RFC3339 + // format. Use the ModTime method to access the time.Time value. + ModTime3339 string `json:"modtime,omitempty"` + modTime time.Time + + // LinkName, for symlinks and hardlinks, is the link target. + LinkName string `json:"linkName,omitempty"` + + // Mode is the permission and mode bits. + Mode int64 `json:"mode,omitempty"` + + // UID is the user ID of the owner. + UID int `json:"uid,omitempty"` + + // GID is the group ID of the owner. + GID int `json:"gid,omitempty"` + + // Uname is the username of the owner. + // + // In the serialized JSON, this field may only be present for + // the first entry with the same UID. + Uname string `json:"userName,omitempty"` + + // Gname is the group name of the owner. + // + // In the serialized JSON, this field may only be present for + // the first entry with the same GID. + Gname string `json:"groupName,omitempty"` + + // Offset, for regular files, provides the offset in the + // stargz file to the file's data bytes. See ChunkOffset and + // ChunkSize. + Offset int64 `json:"offset,omitempty"` + + nextOffset int64 // the Offset of the next entry with a non-zero Offset + + // DevMajor is the major device number for "char" and "block" types. + DevMajor int `json:"devMajor,omitempty"` + + // DevMinor is the major device number for "char" and "block" types. + DevMinor int `json:"devMinor,omitempty"` + + // NumLink is the number of entry names pointing to this entry. + // Zero means one name references this entry. + NumLink int + + // Xattrs are the extended attribute for the entry. + Xattrs map[string][]byte `json:"xattrs,omitempty"` + + // Digest stores the OCI checksum for regular files payload. + // It has the form "sha256:abcdef01234....". + Digest string `json:"digest,omitempty"` + + // ChunkOffset is non-zero if this is a chunk of a large, + // regular file. If so, the Offset is where the gzip header of + // ChunkSize bytes at ChunkOffset in Name begin. + // + // In serialized form, a "chunkSize" JSON field of zero means + // that the chunk goes to the end of the file. After reading + // from the stargz TOC, though, the ChunkSize is initialized + // to a non-zero file for when Type is either "reg" or + // "chunk". + ChunkOffset int64 `json:"chunkOffset,omitempty"` + ChunkSize int64 `json:"chunkSize,omitempty"` + + // ChunkDigest stores an OCI digest of the chunk. This must be formed + // as "sha256:0123abcd...". + ChunkDigest string `json:"chunkDigest,omitempty"` + + children map[string]*TOCEntry +} + +// ModTime returns the entry's modification time. +func (e *TOCEntry) ModTime() time.Time { return e.modTime } + +// NextOffset returns the position (relative to the start of the +// stargz file) of the next gzip boundary after e.Offset. +func (e *TOCEntry) NextOffset() int64 { return e.nextOffset } + +func (e *TOCEntry) addChild(baseName string, child *TOCEntry) { + if e.children == nil { + e.children = make(map[string]*TOCEntry) + } + if child.Type == "dir" { + e.NumLink++ // Entry ".." in the subdirectory links to this directory + } + e.children[baseName] = child +} + +// isDataType reports whether TOCEntry is a regular file or chunk (something that +// contains regular file data). +func (e *TOCEntry) isDataType() bool { return e.Type == "reg" || e.Type == "chunk" } + +// Stat returns a FileInfo value representing e. +func (e *TOCEntry) Stat() os.FileInfo { return fileInfo{e} } + +// ForeachChild calls f for each child item. If f returns false, iteration ends. +// If e is not a directory, f is not called. +func (e *TOCEntry) ForeachChild(f func(baseName string, ent *TOCEntry) bool) { + for name, ent := range e.children { + if !f(name, ent) { + return + } + } +} + +// LookupChild returns the directory e's child by its base name. +func (e *TOCEntry) LookupChild(baseName string) (child *TOCEntry, ok bool) { + child, ok = e.children[baseName] + return +} + +// fileInfo implements os.FileInfo using the wrapped *TOCEntry. +type fileInfo struct{ e *TOCEntry } + +var _ os.FileInfo = fileInfo{} + +func (fi fileInfo) Name() string { return path.Base(fi.e.Name) } +func (fi fileInfo) IsDir() bool { return fi.e.Type == "dir" } +func (fi fileInfo) Size() int64 { return fi.e.Size } +func (fi fileInfo) ModTime() time.Time { return fi.e.ModTime() } +func (fi fileInfo) Sys() interface{} { return fi.e } +func (fi fileInfo) Mode() (m os.FileMode) { + // TOCEntry.Mode is tar.Header.Mode so we can understand the these bits using `tar` pkg. + m = (&tar.Header{Mode: fi.e.Mode}).FileInfo().Mode() & + (os.ModePerm | os.ModeSetuid | os.ModeSetgid | os.ModeSticky) + switch fi.e.Type { + case "dir": + m |= os.ModeDir + case "symlink": + m |= os.ModeSymlink + case "char": + m |= os.ModeDevice | os.ModeCharDevice + case "block": + m |= os.ModeDevice + case "fifo": + m |= os.ModeNamedPipe + } + return m +} + +// TOCEntryVerifier holds verifiers that are usable for verifying chunks contained +// in a eStargz blob. +type TOCEntryVerifier interface { + + // Verifier provides a content verifier that can be used for verifying the + // contents of the specified TOCEntry. + Verifier(ce *TOCEntry) (digest.Verifier, error) +} + +// Compression provides the compression helper to be used creating and parsing eStargz. +// This package provides gzip-based Compression by default, but any compression +// algorithm (e.g. zstd) can be used as long as it implements Compression. +type Compression interface { + Compressor + Decompressor +} + +// Compressor represents the helper mothods to be used for creating eStargz. +type Compressor interface { + // Writer returns WriteCloser to be used for writing a chunk to eStargz. + // Everytime a chunk is written, the WriteCloser is closed and Writer is + // called again for writing the next chunk. + Writer(w io.Writer) (io.WriteCloser, error) + + // WriteTOCAndFooter is called to write JTOC to the passed Writer. + // diffHash calculates the DiffID (uncompressed sha256 hash) of the blob + // WriteTOCAndFooter can optionally write anything that affects DiffID calculation + // (e.g. uncompressed TOC JSON). + // + // This function returns tocDgst that represents the digest of TOC that will be used + // to verify this blob when it's parsed. + WriteTOCAndFooter(w io.Writer, off int64, toc *JTOC, diffHash hash.Hash) (tocDgst digest.Digest, err error) +} + +// Deompressor represents the helper mothods to be used for parsing eStargz. +type Decompressor interface { + // Reader returns ReadCloser to be used for decompressing file payload. + Reader(r io.Reader) (io.ReadCloser, error) + + // FooterSize returns the size of the footer of this blob. + FooterSize() int64 + + // ParseFooter parses the footer and returns the offset and (compressed) size of TOC. + // + // Here, tocSize is optional. If tocSize <= 0, it's by default the size of the range + // from tocOffset until the beginning of the footer (blob size - tocOff - FooterSize). + ParseFooter(p []byte) (tocOffset, tocSize int64, err error) + + // ParseTOC parses TOC from the passed reader. The reader provides the partial contents + // of the underlying blob that has the range specified by ParseFooter method. + // + // This function returns tocDgst that represents the digest of TOC that will be used + // to verify this blob. This must match to the value returned from + // Compressor.WriteTOCAndFooter that is used when creating this blob. + ParseTOC(r io.Reader) (toc *JTOC, tocDgst digest.Digest, err error) +} diff --git a/vendor/github.com/containers/common/pkg/config/config.go b/vendor/github.com/containers/common/pkg/config/config.go index f840472cc..3a6ce8780 100644 --- a/vendor/github.com/containers/common/pkg/config/config.go +++ b/vendor/github.com/containers/common/pkg/config/config.go @@ -167,7 +167,7 @@ type ContainersConfig struct { // RootlessNetworking depicts the "kind" of networking for rootless // containers. Valid options are `slirp4netns` and `cni`. Default is - // `slirp4netns` + // `slirp4netns` on Linux, and `cni` on non-Linux OSes. RootlessNetworking string `toml:"rootless_networking,omitempty"` // SeccompProfile is the seccomp.json profile path which is used as the @@ -234,6 +234,10 @@ type EngineConfig struct { // EventsLogger determines where events should be logged. EventsLogger string `toml:"events_logger,omitempty"` + // HelperBinariesDir is a list of directories which are used to search for + // helper binaries. + HelperBinariesDir []string `toml:"helper_binaries_dir"` + // configuration files. When the same filename is present in in // multiple directories, the file in the directory listed last in // this slice takes precedence. @@ -1126,3 +1130,21 @@ func (c *Config) ActiveDestination() (uri, identity string, err error) { } return "", "", errors.New("no service destination configured") } + +// FindHelperBinary will search the given binary name in the configured directories. +// If searchPATH is set to true it will also search in $PATH. +func (c *Config) FindHelperBinary(name string, searchPATH bool) (string, error) { + for _, path := range c.Engine.HelperBinariesDir { + fullpath := filepath.Join(path, name) + if fi, err := os.Stat(fullpath); err == nil && fi.Mode().IsRegular() { + return fullpath, nil + } + } + if searchPATH { + return exec.LookPath(name) + } + if len(c.Engine.HelperBinariesDir) == 0 { + return "", errors.Errorf("could not find %q because there are no helper binary directories configured", name) + } + return "", errors.Errorf("could not find %q in one of %v", name, c.Engine.HelperBinariesDir) +} diff --git a/vendor/github.com/containers/common/pkg/config/config_darwin.go b/vendor/github.com/containers/common/pkg/config/config_darwin.go index c0722ec7f..5abb51f30 100644 --- a/vendor/github.com/containers/common/pkg/config/config_darwin.go +++ b/vendor/github.com/containers/common/pkg/config/config_darwin.go @@ -15,3 +15,16 @@ func customConfigFile() (string, error) { func ifRootlessConfigPath() (string, error) { return rootlessConfigPath() } + +var defaultHelperBinariesDir = []string{ + // Homebrew install paths + "/usr/local/opt/podman/libexec", + "/opt/homebrew/bin", + "/opt/homebrew/opt/podman/libexec", + "/usr/local/bin", + // default paths + "/usr/local/libexec/podman", + "/usr/local/lib/podman", + "/usr/libexec/podman", + "/usr/lib/podman", +} diff --git a/vendor/github.com/containers/common/pkg/config/config_linux.go b/vendor/github.com/containers/common/pkg/config/config_linux.go index fac9e2283..da0ae871a 100644 --- a/vendor/github.com/containers/common/pkg/config/config_linux.go +++ b/vendor/github.com/containers/common/pkg/config/config_linux.go @@ -35,3 +35,10 @@ func ifRootlessConfigPath() (string, error) { } return "", nil } + +var defaultHelperBinariesDir = []string{ + "/usr/local/libexec/podman", + "/usr/local/lib/podman", + "/usr/libexec/podman", + "/usr/lib/podman", +} diff --git a/vendor/github.com/containers/common/pkg/config/config_windows.go b/vendor/github.com/containers/common/pkg/config/config_windows.go index 28e8471f2..dbe7ba00d 100644 --- a/vendor/github.com/containers/common/pkg/config/config_windows.go +++ b/vendor/github.com/containers/common/pkg/config/config_windows.go @@ -13,3 +13,7 @@ func customConfigFile() (string, error) { func ifRootlessConfigPath() (string, error) { return os.Getenv("APPDATA") + "\\containers\\containers.conf", nil } + +var defaultHelperBinariesDir = []string{ + "C:\\Program Files\\RedHat\\Podman", +} diff --git a/vendor/github.com/containers/common/pkg/config/containers.conf b/vendor/github.com/containers/common/pkg/config/containers.conf index 481405a1a..fc61ed709 100644 --- a/vendor/github.com/containers/common/pkg/config/containers.conf +++ b/vendor/github.com/containers/common/pkg/config/containers.conf @@ -341,6 +341,15 @@ default_sysctls = [ # #events_logger = "journald" +# A is a list of directories which are used to search for helper binaries. +# +#helper_binaries_dir = [ +# "/usr/local/libexec/podman", +# "/usr/local/lib/podman", +# "/usr/libexec/podman", +# "/usr/lib/podman", +#] + # Path to OCI hooks directories for automatically executed hooks. # #hooks_dir = [ diff --git a/vendor/github.com/containers/common/pkg/config/default.go b/vendor/github.com/containers/common/pkg/config/default.go index b8dc21475..db5ba6936 100644 --- a/vendor/github.com/containers/common/pkg/config/default.go +++ b/vendor/github.com/containers/common/pkg/config/default.go @@ -84,10 +84,6 @@ var ( "/usr/lib/cni", "/opt/cni/bin", } - - // DefaultRootlessNetwork is the kind of of rootless networking - // for containers - DefaultRootlessNetwork = "slirp4netns" ) const ( @@ -197,7 +193,7 @@ func DefaultConfig() (*Config, error) { NoHosts: false, PidsLimit: DefaultPidsLimit, PidNS: "private", - RootlessNetworking: DefaultRootlessNetwork, + RootlessNetworking: getDefaultRootlessNetwork(), ShmSize: DefaultShmSize, TZ: "", Umask: "0022", @@ -251,6 +247,7 @@ func defaultConfigFromMemory() (*EngineConfig, error) { c.StaticDir = filepath.Join(storeOpts.GraphRoot, "libpod") c.VolumePath = filepath.Join(storeOpts.GraphRoot, "volumes") + c.HelperBinariesDir = defaultHelperBinariesDir c.HooksDir = DefaultHooksDirs c.ImageDefaultTransport = _defaultTransport c.StateType = BoltDBStateStore diff --git a/vendor/github.com/containers/common/pkg/config/default_linux.go b/vendor/github.com/containers/common/pkg/config/default_linux.go index f61d9ba54..c68c0b130 100644 --- a/vendor/github.com/containers/common/pkg/config/default_linux.go +++ b/vendor/github.com/containers/common/pkg/config/default_linux.go @@ -13,6 +13,12 @@ const ( oldMaxSize = uint64(1048576) ) +// getDefaultRootlessNetwork returns the default rootless network configuration. +// It is "slirp4netns" for Linux. +func getDefaultRootlessNetwork() string { + return "slirp4netns" +} + // getDefaultProcessLimits returns the nproc for the current process in ulimits format // Note that nfile sometimes cannot be set to unlimited, and the limit is hardcoded // to (oldMaxSize) 1048576 (2^20), see: http://stackoverflow.com/a/1213069/1811501 diff --git a/vendor/github.com/containers/common/pkg/config/default_unsupported.go b/vendor/github.com/containers/common/pkg/config/default_unsupported.go index 1ae1dd12c..e38fb810d 100644 --- a/vendor/github.com/containers/common/pkg/config/default_unsupported.go +++ b/vendor/github.com/containers/common/pkg/config/default_unsupported.go @@ -2,6 +2,12 @@ package config +// getDefaultRootlessNetwork returns the default rootless network configuration. +// It is "cni" for non-Linux OSes (to better support `podman-machine` usecases). +func getDefaultRootlessNetwork() string { + return "cni" +} + // isCgroup2UnifiedMode returns whether we are running in cgroup2 mode. func isCgroup2UnifiedMode() (isUnified bool, isUnifiedErr error) { return false, nil diff --git a/vendor/github.com/containers/common/pkg/config/util_supported.go b/vendor/github.com/containers/common/pkg/config/util_supported.go index 417e3a375..33e4a9e8f 100644 --- a/vendor/github.com/containers/common/pkg/config/util_supported.go +++ b/vendor/github.com/containers/common/pkg/config/util_supported.go @@ -48,7 +48,7 @@ func getRuntimeDir() (string, error) { } } if runtimeDir == "" { - tmpDir := filepath.Join(os.TempDir(), fmt.Sprintf("run-%s", uid)) + tmpDir := filepath.Join(os.TempDir(), fmt.Sprintf("podman-run-%s", uid)) if err := os.MkdirAll(tmpDir, 0700); err != nil { logrus.Debugf("unable to make temp dir %v", err) } diff --git a/vendor/github.com/containers/common/version/version.go b/vendor/github.com/containers/common/version/version.go index 2e2d557e3..f248f0c7a 100644 --- a/vendor/github.com/containers/common/version/version.go +++ b/vendor/github.com/containers/common/version/version.go @@ -1,4 +1,4 @@ package version // Version is the version of the build. -const Version = "0.43.3-dev" +const Version = "0.44.0" diff --git a/vendor/github.com/containers/storage/VERSION b/vendor/github.com/containers/storage/VERSION index 2aeaa11ee..39fc130ef 100644 --- a/vendor/github.com/containers/storage/VERSION +++ b/vendor/github.com/containers/storage/VERSION @@ -1 +1 @@ -1.35.0 +1.36.0 diff --git a/vendor/github.com/containers/storage/go.mod b/vendor/github.com/containers/storage/go.mod index 10204a12a..911469182 100644 --- a/vendor/github.com/containers/storage/go.mod +++ b/vendor/github.com/containers/storage/go.mod @@ -5,20 +5,25 @@ module github.com/containers/storage require ( github.com/BurntSushi/toml v0.4.1 github.com/Microsoft/go-winio v0.5.0 - github.com/Microsoft/hcsshim v0.8.20 + github.com/Microsoft/hcsshim v0.8.22 + github.com/containerd/stargz-snapshotter/estargz v0.8.0 github.com/docker/go-units v0.4.0 + github.com/golang/groupcache v0.0.0-20200121045136-8c9f03a8e57e // indirect github.com/google/go-intervals v0.0.2 + github.com/google/uuid v1.2.0 // indirect github.com/hashicorp/go-multierror v1.1.1 github.com/json-iterator/go v1.1.11 - github.com/klauspost/compress v1.13.4 + github.com/klauspost/compress v1.13.5 github.com/klauspost/pgzip v1.2.5 github.com/mattn/go-shellwords v1.0.12 github.com/mistifyio/go-zfs v2.1.2-0.20190413222219-f784269be439+incompatible github.com/moby/sys/mountinfo v0.4.1 + github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect + github.com/modern-go/reflect2 v1.0.1 // indirect github.com/opencontainers/go-digest v1.0.0 github.com/opencontainers/runc v1.0.2 github.com/opencontainers/runtime-spec v1.0.3-0.20210326190908-1c3f411f0417 - github.com/opencontainers/selinux v1.8.4 + github.com/opencontainers/selinux v1.8.5 github.com/pkg/errors v0.9.1 github.com/sirupsen/logrus v1.8.1 github.com/stretchr/testify v1.7.0 @@ -28,5 +33,6 @@ require ( github.com/vbatts/tar-split v0.11.2 golang.org/x/net v0.0.0-20210226172049-e18ecbb05110 golang.org/x/sys v0.0.0-20210820121016-41cdb8703e55 + gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15 // indirect gotest.tools v2.2.0+incompatible ) diff --git a/vendor/github.com/containers/storage/go.sum b/vendor/github.com/containers/storage/go.sum index 1f5be8df5..5cc5da6d3 100644 --- a/vendor/github.com/containers/storage/go.sum +++ b/vendor/github.com/containers/storage/go.sum @@ -1,302 +1,85 @@ bazil.org/fuse v0.0.0-20160811212531-371fbbdaa898/go.mod h1:Xbm+BRKSBEpa4q4hTSxohYNQpsxXPbPry4JJWOB3LB8= cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw= -cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw= -cloud.google.com/go v0.38.0/go.mod h1:990N+gfupTy94rShfmMCWGDn0LpTmnzTp2qbd1dvSRU= -cloud.google.com/go v0.44.1/go.mod h1:iSa0KzasP4Uvy3f1mN/7PiObzGgflwredwwASm/v6AU= -cloud.google.com/go v0.44.2/go.mod h1:60680Gw3Yr4ikxnPRS/oxxkBccT6SA1yMk63TGekxKY= -cloud.google.com/go v0.45.1/go.mod h1:RpBamKRgapWJb87xiFSdk4g1CME7QZg3uwTez+TSTjc= -cloud.google.com/go v0.46.3/go.mod h1:a6bKKbmY7er1mI7TEI4lsAkts/mkhTSZK8w33B4RAg0= -cloud.google.com/go v0.50.0/go.mod h1:r9sluTvynVuxRIOHXQEHMFffphuXHOMZMycpNR5e6To= -cloud.google.com/go v0.52.0/go.mod h1:pXajvRH/6o3+F9jDHZWQ5PbGhn+o8w9qiu/CffaVdO4= -cloud.google.com/go v0.53.0/go.mod h1:fp/UouUEsRkN6ryDKNW/Upv/JBKnv6WDthjR6+vze6M= -cloud.google.com/go v0.54.0/go.mod h1:1rq2OEkV3YMf6n/9ZvGWI3GWw0VoqH/1x2nd8Is/bPc= -cloud.google.com/go/bigquery v1.0.1/go.mod h1:i/xbL2UlR5RvWAURpBYZTtm/cXjCha9lbfbpx4poX+o= -cloud.google.com/go/bigquery v1.3.0/go.mod h1:PjpwJnslEMmckchkHFfq+HTD2DmtT67aNFKH1/VBDHE= -cloud.google.com/go/bigquery v1.4.0/go.mod h1:S8dzgnTigyfTmLBfrtrhyYhwRxG72rYxvftPBK2Dvzc= -cloud.google.com/go/datastore v1.0.0/go.mod h1:LXYbyblFSglQ5pkeyhO+Qmw7ukd3C+pD7TKLgZqpHYE= -cloud.google.com/go/datastore v1.1.0/go.mod h1:umbIZjpQpHh4hmRpGhH4tLFup+FVzqBi1b3c64qFpCk= -cloud.google.com/go/pubsub v1.0.1/go.mod h1:R0Gpsv3s54REJCy4fxDixWD93lHJMoZTyQ2kNxGRt3I= -cloud.google.com/go/pubsub v1.1.0/go.mod h1:EwwdRX2sKPjnvnqCa270oGRyludottCI76h+R3AArQw= -cloud.google.com/go/pubsub v1.2.0/go.mod h1:jhfEVHT8odbXTkndysNHCcx0awwzvfOlguIAii9o8iA= -cloud.google.com/go/storage v1.0.0/go.mod h1:IhtSnM/ZTZV8YYJWCY8RULGVqBDmpoyjwiyrjsg+URw= -cloud.google.com/go/storage v1.5.0/go.mod h1:tpKbwo567HUNpVclU5sGELwQWBDZ8gh0ZeosJ0Rtdos= -cloud.google.com/go/storage v1.6.0/go.mod h1:N7U0C8pVQ/+NIKOBQyamJIeKQKkZ+mxpohlUTyfDhBk= -dmitri.shuralyov.com/gpu/mtl v0.0.0-20190408044501-666a987793e9/go.mod h1:H6x//7gZCb22OMCxBHrMx7a5I7Hp++hsVxbQ4BYO7hU= 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a/vendor/github.com/containers/storage/pkg/chunked/compression.go b/vendor/github.com/containers/storage/pkg/chunked/compression.go index f2811fb9a..96254bc4e 100644 --- a/vendor/github.com/containers/storage/pkg/chunked/compression.go +++ b/vendor/github.com/containers/storage/pkg/chunked/compression.go @@ -1,14 +1,18 @@ package chunked import ( + archivetar "archive/tar" "bytes" "encoding/binary" "fmt" "io" + "strconv" + "github.com/containerd/stargz-snapshotter/estargz" "github.com/containers/storage/pkg/chunked/compressor" "github.com/containers/storage/pkg/chunked/internal" "github.com/klauspost/compress/zstd" + "github.com/klauspost/pgzip" digest "github.com/opencontainers/go-digest" "github.com/pkg/errors" "github.com/vbatts/tar-split/archive/tar" @@ -50,25 +54,129 @@ func isZstdChunkedFrameMagic(data []byte) bool { return bytes.Equal(internal.ZstdChunkedFrameMagic, data[:8]) } +func readEstargzChunkedManifest(blobStream ImageSourceSeekable, blobSize int64, annotations map[string]string) ([]byte, int64, error) { + // information on the format here https://github.com/containerd/stargz-snapshotter/blob/main/docs/stargz-estargz.md + footerSize := int64(51) + if blobSize <= footerSize { + return nil, 0, errors.New("blob too small") + } + chunk := ImageSourceChunk{ + Offset: uint64(blobSize - footerSize), + Length: uint64(footerSize), + } + parts, errs, err := blobStream.GetBlobAt([]ImageSourceChunk{chunk}) + if err != nil { + return nil, 0, err + } + var reader io.ReadCloser + select { + case r := <-parts: + reader = r + case err := <-errs: + return nil, 0, err + } + defer reader.Close() + footer := make([]byte, footerSize) + if _, err := io.ReadFull(reader, footer); err != nil { + return nil, 0, err + } + + /* Read the ToC offset: + - 10 bytes gzip header + - 2 bytes XLEN (length of Extra field) = 26 (4 bytes header + 16 hex digits + len("STARGZ")) + - 2 bytes Extra: SI1 = 'S', SI2 = 'G' + - 2 bytes Extra: LEN = 22 (16 hex digits + len("STARGZ")) + - 22 bytes Extra: subfield = fmt.Sprintf("%016xSTARGZ", offsetOfTOC) + - 5 bytes flate header: BFINAL = 1(last block), BTYPE = 0(non-compressed block), LEN = 0 + - 8 bytes gzip footer + */ + tocOffset, err := strconv.ParseInt(string(footer[16:16+22-6]), 16, 64) + if err != nil { + return nil, 0, errors.Wrap(err, "parse ToC offset") + } + + size := int64(blobSize - footerSize - tocOffset) + // set a reasonable limit + if size > (1<<20)*50 { + return nil, 0, errors.New("manifest too big") + } + + chunk = ImageSourceChunk{ + Offset: uint64(tocOffset), + Length: uint64(size), + } + parts, errs, err = blobStream.GetBlobAt([]ImageSourceChunk{chunk}) + if err != nil { + return nil, 0, err + } + + var tocReader io.ReadCloser + select { + case r := <-parts: + tocReader = r + case err := <-errs: + return nil, 0, err + } + defer tocReader.Close() + + r, err := pgzip.NewReader(tocReader) + if err != nil { + return nil, 0, err + } + defer r.Close() + + aTar := archivetar.NewReader(r) + + header, err := aTar.Next() + if err != nil { + return nil, 0, err + } + // set a reasonable limit + if header.Size > (1<<20)*50 { + return nil, 0, errors.New("manifest too big") + } + + manifestUncompressed := make([]byte, header.Size) + if _, err := io.ReadFull(aTar, manifestUncompressed); err != nil { + return nil, 0, err + } + + manifestDigester := digest.Canonical.Digester() + manifestChecksum := manifestDigester.Hash() + if _, err := manifestChecksum.Write(manifestUncompressed); err != nil { + return nil, 0, err + } + + d, err := digest.Parse(annotations[estargz.TOCJSONDigestAnnotation]) + if err != nil { + return nil, 0, err + } + if manifestDigester.Digest() != d { + return nil, 0, errors.New("invalid manifest checksum") + } + + return manifestUncompressed, tocOffset, nil +} + // readZstdChunkedManifest reads the zstd:chunked manifest from the seekable stream blobStream. The blob total size must // be specified. // This function uses the io.containers.zstd-chunked. annotations when specified. -func readZstdChunkedManifest(blobStream ImageSourceSeekable, blobSize int64, annotations map[string]string) ([]byte, error) { +func readZstdChunkedManifest(blobStream ImageSourceSeekable, blobSize int64, annotations map[string]string) ([]byte, int64, error) { footerSize := int64(internal.FooterSizeSupported) if blobSize <= footerSize { - return nil, errors.New("blob too small") + return nil, 0, errors.New("blob too small") } manifestChecksumAnnotation := annotations[internal.ManifestChecksumKey] if manifestChecksumAnnotation == "" { - return nil, fmt.Errorf("manifest checksum annotation %q not found", internal.ManifestChecksumKey) + return nil, 0, fmt.Errorf("manifest checksum annotation %q not found", internal.ManifestChecksumKey) } var offset, length, lengthUncompressed, manifestType uint64 if offsetMetadata := annotations[internal.ManifestInfoKey]; offsetMetadata != "" { if _, err := fmt.Sscanf(offsetMetadata, "%d:%d:%d:%d", &offset, &length, &lengthUncompressed, &manifestType); err != nil { - return nil, err + return nil, 0, err } } else { chunk := ImageSourceChunk{ @@ -77,18 +185,18 @@ func readZstdChunkedManifest(blobStream ImageSourceSeekable, blobSize int64, ann } parts, errs, err := blobStream.GetBlobAt([]ImageSourceChunk{chunk}) if err != nil { - return nil, err + return nil, 0, err } var reader io.ReadCloser select { case r := <-parts: reader = r case err := <-errs: - return nil, err + return nil, 0, err } footer := make([]byte, footerSize) if _, err := io.ReadFull(reader, footer); err != nil { - return nil, err + return nil, 0, err } offset = binary.LittleEndian.Uint64(footer[0:8]) @@ -96,20 +204,20 @@ func readZstdChunkedManifest(blobStream ImageSourceSeekable, blobSize int64, ann lengthUncompressed = binary.LittleEndian.Uint64(footer[16:24]) manifestType = binary.LittleEndian.Uint64(footer[24:32]) if !isZstdChunkedFrameMagic(footer[32:40]) { - return nil, errors.New("invalid magic number") + return nil, 0, errors.New("invalid magic number") } } if manifestType != internal.ManifestTypeCRFS { - return nil, errors.New("invalid manifest type") + return nil, 0, errors.New("invalid manifest type") } // set a reasonable limit if length > (1<<20)*50 { - return nil, errors.New("manifest too big") + return nil, 0, errors.New("manifest too big") } if lengthUncompressed > (1<<20)*50 { - return nil, errors.New("manifest too big") + return nil, 0, errors.New("manifest too big") } chunk := ImageSourceChunk{ @@ -119,47 +227,47 @@ func readZstdChunkedManifest(blobStream ImageSourceSeekable, blobSize int64, ann parts, errs, err := blobStream.GetBlobAt([]ImageSourceChunk{chunk}) if err != nil { - return nil, err + return nil, 0, err } var reader io.ReadCloser select { case r := <-parts: reader = r case err := <-errs: - return nil, err + return nil, 0, err } manifest := make([]byte, length) if _, err := io.ReadFull(reader, manifest); err != nil { - return nil, err + return nil, 0, err } manifestDigester := digest.Canonical.Digester() manifestChecksum := manifestDigester.Hash() if _, err := manifestChecksum.Write(manifest); err != nil { - return nil, err + return nil, 0, err } d, err := digest.Parse(manifestChecksumAnnotation) if err != nil { - return nil, err + return nil, 0, err } if manifestDigester.Digest() != d { - return nil, errors.New("invalid manifest checksum") + return nil, 0, errors.New("invalid manifest checksum") } decoder, err := zstd.NewReader(nil) if err != nil { - return nil, err + return nil, 0, err } defer decoder.Close() b := make([]byte, 0, lengthUncompressed) if decoded, err := decoder.DecodeAll(manifest, b); err == nil { - return decoded, nil + return decoded, int64(offset), nil } - return manifest, nil + return manifest, int64(offset), nil } // ZstdCompressor is a CompressorFunc for the zstd compression algorithm. diff --git a/vendor/github.com/containers/storage/pkg/chunked/compressor/compressor.go b/vendor/github.com/containers/storage/pkg/chunked/compressor/compressor.go index a205b73fd..092cf584a 100644 --- a/vendor/github.com/containers/storage/pkg/chunked/compressor/compressor.go +++ b/vendor/github.com/containers/storage/pkg/chunked/compressor/compressor.go @@ -50,7 +50,7 @@ func writeZstdChunkedStream(destFile io.Writer, outMetadata map[string]string, r return offset, nil } - var metadata []internal.ZstdFileMetadata + var metadata []internal.FileMetadata for { hdr, err := tr.Next() if err != nil { @@ -112,7 +112,7 @@ func writeZstdChunkedStream(destFile io.Writer, outMetadata map[string]string, r for k, v := range hdr.Xattrs { xattrs[k] = base64.StdEncoding.EncodeToString([]byte(v)) } - m := internal.ZstdFileMetadata{ + m := internal.FileMetadata{ Type: typ, Name: hdr.Name, Linkname: hdr.Linkname, diff --git a/vendor/github.com/containers/storage/pkg/chunked/internal/compression.go b/vendor/github.com/containers/storage/pkg/chunked/internal/compression.go index af0025c20..c91c43d85 100644 --- a/vendor/github.com/containers/storage/pkg/chunked/internal/compression.go +++ b/vendor/github.com/containers/storage/pkg/chunked/internal/compression.go @@ -17,12 +17,12 @@ import ( "github.com/opencontainers/go-digest" ) -type ZstdTOC struct { - Version int `json:"version"` - Entries []ZstdFileMetadata `json:"entries"` +type TOC struct { + Version int `json:"version"` + Entries []FileMetadata `json:"entries"` } -type ZstdFileMetadata struct { +type FileMetadata struct { Type string `json:"type"` Name string `json:"name"` Linkname string `json:"linkName,omitempty"` @@ -114,11 +114,11 @@ func appendZstdSkippableFrame(dest io.Writer, data []byte) error { return nil } -func WriteZstdChunkedManifest(dest io.Writer, outMetadata map[string]string, offset uint64, metadata []ZstdFileMetadata, level int) error { +func WriteZstdChunkedManifest(dest io.Writer, outMetadata map[string]string, offset uint64, metadata []FileMetadata, level int) error { // 8 is the size of the zstd skippable frame header + the frame size manifestOffset := offset + 8 - toc := ZstdTOC{ + toc := TOC{ Version: 1, Entries: metadata, } diff --git a/vendor/github.com/containers/storage/pkg/chunked/storage_linux.go b/vendor/github.com/containers/storage/pkg/chunked/storage_linux.go index 3aea77f22..7bd804c44 100644 --- a/vendor/github.com/containers/storage/pkg/chunked/storage_linux.go +++ b/vendor/github.com/containers/storage/pkg/chunked/storage_linux.go @@ -10,19 +10,23 @@ import ( "io/ioutil" "os" "path/filepath" + "reflect" "sort" "strings" "syscall" "time" + "github.com/containerd/stargz-snapshotter/estargz" storage "github.com/containers/storage" graphdriver "github.com/containers/storage/drivers" driversCopy "github.com/containers/storage/drivers/copy" "github.com/containers/storage/pkg/archive" "github.com/containers/storage/pkg/chunked/internal" "github.com/containers/storage/pkg/idtools" + "github.com/containers/storage/pkg/system" "github.com/containers/storage/types" "github.com/klauspost/compress/zstd" + "github.com/klauspost/pgzip" digest "github.com/opencontainers/go-digest" "github.com/pkg/errors" "github.com/sirupsen/logrus" @@ -35,13 +39,22 @@ const ( newFileFlags = (unix.O_CREAT | unix.O_TRUNC | unix.O_EXCL | unix.O_WRONLY) containersOverrideXattr = "user.containers.override_stat" bigDataKey = "zstd-chunked-manifest" + + fileTypeZstdChunked = iota + fileTypeEstargz = iota ) -type chunkedZstdDiffer struct { +type compressedFileType int + +type chunkedDiffer struct { stream ImageSourceSeekable manifest []byte - layersMetadata map[string][]internal.ZstdFileMetadata + layersMetadata map[string][]internal.FileMetadata layersTarget map[string]string + tocOffset int64 + fileType compressedFileType + + gzipReader *pgzip.Reader } func timeToTimespec(time time.Time) (ts unix.Timespec) { @@ -71,7 +84,10 @@ func copyFileContent(srcFd int, destFile string, dirfd int, mode os.FileMode, us defer destDir.Close() doLink := func() error { - return unix.Linkat(srcFd, "", int(destDir.Fd()), destBase, unix.AT_EMPTY_PATH) + // Using unix.AT_EMPTY_PATH requires CAP_DAC_READ_SEARCH while this variant that uses + // /proc/self/fd doesn't and can be used with rootless. + srcPath := fmt.Sprintf("/proc/self/fd/%d", srcFd) + return unix.Linkat(unix.AT_FDCWD, srcPath, int(destDir.Fd()), destBase, unix.AT_SYMLINK_FOLLOW) } err := doLink() @@ -101,26 +117,28 @@ func copyFileContent(srcFd int, destFile string, dirfd int, mode os.FileMode, us return dstFile, st.Size(), err } -func prepareOtherLayersCache(layersMetadata map[string][]internal.ZstdFileMetadata) map[string]map[string]*internal.ZstdFileMetadata { - maps := make(map[string]map[string]*internal.ZstdFileMetadata) +func prepareOtherLayersCache(layersMetadata map[string][]internal.FileMetadata) map[string]map[string][]*internal.FileMetadata { + maps := make(map[string]map[string][]*internal.FileMetadata) for layerID, v := range layersMetadata { - r := make(map[string]*internal.ZstdFileMetadata) + r := make(map[string][]*internal.FileMetadata) for i := range v { - r[v[i].Digest] = &v[i] + if v[i].Digest != "" { + r[v[i].Digest] = append(r[v[i].Digest], &v[i]) + } } maps[layerID] = r } return maps } -func getLayersCache(store storage.Store) (map[string][]internal.ZstdFileMetadata, map[string]string, error) { +func getLayersCache(store storage.Store) (map[string][]internal.FileMetadata, map[string]string, error) { allLayers, err := store.Layers() if err != nil { return nil, nil, err } - layersMetadata := make(map[string][]internal.ZstdFileMetadata) + layersMetadata := make(map[string][]internal.FileMetadata) layersTarget := make(map[string]string) for _, r := range allLayers { manifestReader, err := store.LayerBigData(r.ID, bigDataKey) @@ -132,7 +150,7 @@ func getLayersCache(store storage.Store) (map[string][]internal.ZstdFileMetadata if err != nil { return nil, nil, err } - var toc internal.ZstdTOC + var toc internal.TOC if err := json.Unmarshal(manifest, &toc); err != nil { continue } @@ -152,11 +170,14 @@ func GetDiffer(ctx context.Context, store storage.Store, blobSize int64, annotat if _, ok := annotations[internal.ManifestChecksumKey]; ok { return makeZstdChunkedDiffer(ctx, store, blobSize, annotations, iss) } + if _, ok := annotations[estargz.TOCJSONDigestAnnotation]; ok { + return makeEstargzChunkedDiffer(ctx, store, blobSize, annotations, iss) + } return nil, errors.New("blob type not supported for partial retrieval") } -func makeZstdChunkedDiffer(ctx context.Context, store storage.Store, blobSize int64, annotations map[string]string, iss ImageSourceSeekable) (*chunkedZstdDiffer, error) { - manifest, err := readZstdChunkedManifest(iss, blobSize, annotations) +func makeZstdChunkedDiffer(ctx context.Context, store storage.Store, blobSize int64, annotations map[string]string, iss ImageSourceSeekable) (*chunkedDiffer, error) { + manifest, tocOffset, err := readZstdChunkedManifest(iss, blobSize, annotations) if err != nil { return nil, err } @@ -165,11 +186,33 @@ func makeZstdChunkedDiffer(ctx context.Context, store storage.Store, blobSize in return nil, err } - return &chunkedZstdDiffer{ + return &chunkedDiffer{ stream: iss, manifest: manifest, layersMetadata: layersMetadata, layersTarget: layersTarget, + tocOffset: tocOffset, + fileType: fileTypeZstdChunked, + }, nil +} + +func makeEstargzChunkedDiffer(ctx context.Context, store storage.Store, blobSize int64, annotations map[string]string, iss ImageSourceSeekable) (*chunkedDiffer, error) { + manifest, tocOffset, err := readEstargzChunkedManifest(iss, blobSize, annotations) + if err != nil { + return nil, err + } + layersMetadata, layersTarget, err := getLayersCache(store) + if err != nil { + return nil, err + } + + return &chunkedDiffer{ + stream: iss, + manifest: manifest, + layersMetadata: layersMetadata, + layersTarget: layersTarget, + tocOffset: tocOffset, + fileType: fileTypeEstargz, }, nil } @@ -179,7 +222,7 @@ func makeZstdChunkedDiffer(ctx context.Context, store storage.Store, blobSize in // otherFile contains the metadata for the file. // dirfd is an open file descriptor to the destination root directory. // useHardLinks defines whether the deduplication can be performed using hard links. -func copyFileFromOtherLayer(file internal.ZstdFileMetadata, source string, otherFile *internal.ZstdFileMetadata, dirfd int, useHardLinks bool) (bool, *os.File, int64, error) { +func copyFileFromOtherLayer(file *internal.FileMetadata, source string, otherFile *internal.FileMetadata, dirfd int, useHardLinks bool) (bool, *os.File, int64, error) { srcDirfd, err := unix.Open(source, unix.O_RDONLY, 0) if err != nil { return false, nil, 0, err @@ -199,30 +242,98 @@ func copyFileFromOtherLayer(file internal.ZstdFileMetadata, source string, other return true, dstFile, written, err } +// canDedupMetadataWithHardLink says whether it is possible to deduplicate file with otherFile. +// It checks that the two files have the same UID, GID, file mode and xattrs. +func canDedupMetadataWithHardLink(file *internal.FileMetadata, otherFile *internal.FileMetadata) bool { + if file.UID != otherFile.UID { + return false + } + if file.GID != otherFile.GID { + return false + } + if file.Mode != otherFile.Mode { + return false + } + if !reflect.DeepEqual(file.Xattrs, otherFile.Xattrs) { + return false + } + return true +} + +// canDedupFileWithHardLink checks if the specified file can be deduplicated by an +// open file, given its descriptor and stat data. +func canDedupFileWithHardLink(file *internal.FileMetadata, fd int, s os.FileInfo) bool { + st, ok := s.Sys().(*syscall.Stat_t) + if !ok { + return false + } + + path := fmt.Sprintf("/proc/self/fd/%d", fd) + + listXattrs, err := system.Llistxattr(path) + if err != nil { + return false + } + + xattrsToIgnore := map[string]interface{}{ + "security.selinux": true, + } + + xattrs := make(map[string]string) + for _, x := range listXattrs { + v, err := system.Lgetxattr(path, x) + if err != nil { + return false + } + + if _, found := xattrsToIgnore[x]; found { + continue + } + xattrs[x] = string(v) + } + // fill only the attributes used by canDedupMetadataWithHardLink. + otherFile := internal.FileMetadata{ + UID: int(st.Uid), + GID: int(st.Gid), + Mode: int64(st.Mode), + Xattrs: xattrs, + } + return canDedupMetadataWithHardLink(file, &otherFile) +} + // findFileInOtherLayers finds the specified file in other layers. // file is the file to look for. // dirfd is an open file descriptor to the checkout root directory. // layersMetadata contains the metadata for each layer in the storage. // layersTarget maps each layer to its checkout on disk. // useHardLinks defines whether the deduplication can be performed using hard links. -func findFileInOtherLayers(file internal.ZstdFileMetadata, dirfd int, layersMetadata map[string]map[string]*internal.ZstdFileMetadata, layersTarget map[string]string, useHardLinks bool) (bool, *os.File, int64, error) { +func findFileInOtherLayers(file *internal.FileMetadata, dirfd int, layersMetadata map[string]map[string][]*internal.FileMetadata, layersTarget map[string]string, useHardLinks bool) (bool, *os.File, int64, error) { // this is ugly, needs to be indexed for layerID, checksums := range layersMetadata { - m, found := checksums[file.Digest] - if !found { - continue - } - source, ok := layersTarget[layerID] if !ok { continue } + files, found := checksums[file.Digest] + if !found { + continue + } + for _, candidate := range files { + // check if it is a valid candidate to dedup file + if useHardLinks && !canDedupMetadataWithHardLink(file, candidate) { + continue + } - found, dstFile, written, err := copyFileFromOtherLayer(file, source, m, dirfd, useHardLinks) - if found && err == nil { - return found, dstFile, written, err + found, dstFile, written, err := copyFileFromOtherLayer(file, source, candidate, dirfd, useHardLinks) + if found && err == nil { + return found, dstFile, written, err + } } } + // If hard links deduplication was used and it has failed, try again without hard links. + if useHardLinks { + return findFileInOtherLayers(file, dirfd, layersMetadata, layersTarget, false) + } return false, nil, 0, nil } @@ -240,7 +351,7 @@ func getFileDigest(f *os.File) (digest.Digest, error) { // file is the file to look for. // dirfd is an open fd to the destination checkout. // useHardLinks defines whether the deduplication can be performed using hard links. -func findFileOnTheHost(file internal.ZstdFileMetadata, dirfd int, useHardLinks bool) (bool, *os.File, int64, error) { +func findFileOnTheHost(file *internal.FileMetadata, dirfd int, useHardLinks bool) (bool, *os.File, int64, error) { sourceFile := filepath.Clean(filepath.Join("/", file.Name)) if !strings.HasPrefix(sourceFile, "/usr/") { // limit host deduplication to files under /usr. @@ -278,6 +389,9 @@ func findFileOnTheHost(file internal.ZstdFileMetadata, dirfd int, useHardLinks b return false, nil, 0, nil } + // check if the open file can be deduplicated with hard links + useHardLinks = useHardLinks && canDedupFileWithHardLink(file, fd, st) + dstFile, written, err := copyFileContent(fd, file.Name, dirfd, 0, useHardLinks) if err != nil { return false, nil, 0, nil @@ -300,7 +414,7 @@ func findFileOnTheHost(file internal.ZstdFileMetadata, dirfd int, useHardLinks b return true, dstFile, written, nil } -func maybeDoIDRemap(manifest []internal.ZstdFileMetadata, options *archive.TarOptions) error { +func maybeDoIDRemap(manifest []internal.FileMetadata, options *archive.TarOptions) error { if options.ChownOpts == nil && len(options.UIDMaps) == 0 || len(options.GIDMaps) == 0 { return nil } @@ -327,7 +441,7 @@ func maybeDoIDRemap(manifest []internal.ZstdFileMetadata, options *archive.TarOp } type missingFile struct { - File *internal.ZstdFileMetadata + File *internal.FileMetadata Gap int64 } @@ -341,7 +455,7 @@ type missingChunk struct { } // setFileAttrs sets the file attributes for file given metadata -func setFileAttrs(file *os.File, mode os.FileMode, metadata *internal.ZstdFileMetadata, options *archive.TarOptions) error { +func setFileAttrs(file *os.File, mode os.FileMode, metadata *internal.FileMetadata, options *archive.TarOptions) error { if file == nil || file.Fd() < 0 { return errors.Errorf("invalid file") } @@ -401,7 +515,7 @@ func openFileUnderRoot(name string, dirfd int, flags uint64, mode os.FileMode) ( return os.NewFile(uintptr(fd), name), nil } -func createFileFromZstdStream(dest string, dirfd int, reader io.Reader, mode os.FileMode, metadata *internal.ZstdFileMetadata, options *archive.TarOptions) (err error) { +func (c *chunkedDiffer) createFileFromCompressedStream(dest string, dirfd int, reader io.Reader, mode os.FileMode, metadata *internal.FileMetadata, options *archive.TarOptions) (err error) { file, err := openFileUnderRoot(metadata.Name, dirfd, newFileFlags, 0) if err != nil { return err @@ -413,18 +527,48 @@ func createFileFromZstdStream(dest string, dirfd int, reader io.Reader, mode os. } }() - z, err := zstd.NewReader(reader) - if err != nil { - return err - } - defer z.Close() - digester := digest.Canonical.Digester() checksum := digester.Hash() - _, err = z.WriteTo(io.MultiWriter(file, checksum)) - if err != nil { - return err + to := io.MultiWriter(file, checksum) + + switch c.fileType { + case fileTypeZstdChunked: + z, err := zstd.NewReader(reader) + if err != nil { + return err + } + defer z.Close() + + if _, err := io.Copy(to, io.LimitReader(z, metadata.Size)); err != nil { + return err + } + if _, err := io.Copy(ioutil.Discard, reader); err != nil { + return err + } + case fileTypeEstargz: + if c.gzipReader == nil { + r, err := pgzip.NewReader(reader) + if err != nil { + return err + } + c.gzipReader = r + } else { + if err := c.gzipReader.Reset(reader); err != nil { + return err + } + } + defer c.gzipReader.Close() + + if _, err := io.Copy(to, io.LimitReader(c.gzipReader, metadata.Size)); err != nil { + return err + } + if _, err := io.Copy(ioutil.Discard, reader); err != nil { + return err + } + default: + return fmt.Errorf("unknown file type %q", c.fileType) } + manifestChecksum, err := digest.Parse(metadata.Digest) if err != nil { return err @@ -435,7 +579,7 @@ func createFileFromZstdStream(dest string, dirfd int, reader io.Reader, mode os. return setFileAttrs(file, mode, metadata, options) } -func storeMissingFiles(streams chan io.ReadCloser, errs chan error, dest string, dirfd int, missingChunks []missingChunk, options *archive.TarOptions) error { +func (c *chunkedDiffer) storeMissingFiles(streams chan io.ReadCloser, errs chan error, dest string, dirfd int, missingChunks []missingChunk, options *archive.TarOptions) error { for mc := 0; ; mc++ { var part io.ReadCloser select { @@ -448,9 +592,10 @@ func storeMissingFiles(streams chan io.ReadCloser, errs chan error, dest string, if mc == len(missingChunks) { break } - return errors.Errorf("invalid stream returned %d %d", mc, len(missingChunks)) + return errors.Errorf("invalid stream returned") } if mc == len(missingChunks) { + part.Close() return errors.Errorf("too many chunks returned") } @@ -459,6 +604,7 @@ func storeMissingFiles(streams chan io.ReadCloser, errs chan error, dest string, limitReader := io.LimitReader(part, mf.Gap) _, err := io.Copy(ioutil.Discard, limitReader) if err != nil { + part.Close() return err } continue @@ -466,7 +612,7 @@ func storeMissingFiles(streams chan io.ReadCloser, errs chan error, dest string, limitReader := io.LimitReader(part, mf.Length()) - if err := createFileFromZstdStream(dest, dirfd, limitReader, os.FileMode(mf.File.Mode), mf.File, options); err != nil { + if err := c.createFileFromCompressedStream(dest, dirfd, limitReader, os.FileMode(mf.File.Mode), mf.File, options); err != nil { part.Close() return err } @@ -505,18 +651,20 @@ func mergeMissingChunks(missingChunks []missingChunk, target int) []missingChunk newMissingChunks = append(newMissingChunks, missingChunks[i]) } else { prev := &newMissingChunks[len(newMissingChunks)-1] - gapFile := missingFile{ - Gap: int64(gap), - } prev.RawChunk.Length += uint64(gap) + missingChunks[i].RawChunk.Length - prev.Files = append(append(prev.Files, gapFile), missingChunks[i].Files...) + if gap > 0 { + gapFile := missingFile{ + Gap: int64(gap), + } + prev.Files = append(prev.Files, gapFile) + } + prev.Files = append(prev.Files, missingChunks[i].Files...) } } - return newMissingChunks } -func retrieveMissingFiles(input *chunkedZstdDiffer, dest string, dirfd int, missingChunks []missingChunk, options *archive.TarOptions) error { +func (c *chunkedDiffer) retrieveMissingFiles(dest string, dirfd int, missingChunks []missingChunk, options *archive.TarOptions) error { var chunksToRequest []ImageSourceChunk for _, c := range missingChunks { chunksToRequest = append(chunksToRequest, c.RawChunk) @@ -527,7 +675,7 @@ func retrieveMissingFiles(input *chunkedZstdDiffer, dest string, dirfd int, miss var err error var errs chan error for { - streams, errs, err = input.stream.GetBlobAt(chunksToRequest) + streams, errs, err = c.stream.GetBlobAt(chunksToRequest) if err == nil { break } @@ -546,13 +694,13 @@ func retrieveMissingFiles(input *chunkedZstdDiffer, dest string, dirfd int, miss return err } - if err := storeMissingFiles(streams, errs, dest, dirfd, missingChunks, options); err != nil { + if err := c.storeMissingFiles(streams, errs, dest, dirfd, missingChunks, options); err != nil { return err } return nil } -func safeMkdir(dirfd int, mode os.FileMode, metadata *internal.ZstdFileMetadata, options *archive.TarOptions) error { +func safeMkdir(dirfd int, mode os.FileMode, metadata *internal.FileMetadata, options *archive.TarOptions) error { parent := filepath.Dir(metadata.Name) base := filepath.Base(metadata.Name) @@ -581,7 +729,7 @@ func safeMkdir(dirfd int, mode os.FileMode, metadata *internal.ZstdFileMetadata, return setFileAttrs(file, mode, metadata, options) } -func safeLink(dirfd int, mode os.FileMode, metadata *internal.ZstdFileMetadata, options *archive.TarOptions) error { +func safeLink(dirfd int, mode os.FileMode, metadata *internal.FileMetadata, options *archive.TarOptions) error { sourceFile, err := openFileUnderRoot(metadata.Linkname, dirfd, unix.O_RDONLY, 0) if err != nil { return err @@ -613,7 +761,7 @@ func safeLink(dirfd int, mode os.FileMode, metadata *internal.ZstdFileMetadata, return setFileAttrs(newFile, mode, metadata, options) } -func safeSymlink(dirfd int, mode os.FileMode, metadata *internal.ZstdFileMetadata, options *archive.TarOptions) error { +func safeSymlink(dirfd int, mode os.FileMode, metadata *internal.FileMetadata, options *archive.TarOptions) error { destDir, destBase := filepath.Dir(metadata.Name), filepath.Base(metadata.Name) destDirFd := dirfd if destDir != "." { @@ -691,7 +839,7 @@ type hardLinkToCreate struct { dest string dirfd int mode os.FileMode - metadata *internal.ZstdFileMetadata + metadata *internal.FileMetadata } func parseBooleanPullOption(storeOpts *storage.StoreOptions, name string, def bool) bool { @@ -701,12 +849,12 @@ func parseBooleanPullOption(storeOpts *storage.StoreOptions, name string, def bo return def } -func (d *chunkedZstdDiffer) ApplyDiff(dest string, options *archive.TarOptions) (graphdriver.DriverWithDifferOutput, error) { +func (c *chunkedDiffer) ApplyDiff(dest string, options *archive.TarOptions) (graphdriver.DriverWithDifferOutput, error) { bigData := map[string][]byte{ - bigDataKey: d.manifest, + bigDataKey: c.manifest, } output := graphdriver.DriverWithDifferOutput{ - Differ: d, + Differ: c, BigData: bigData, } @@ -726,30 +874,21 @@ func (d *chunkedZstdDiffer) ApplyDiff(dest string, options *archive.TarOptions) useHardLinks := parseBooleanPullOption(&storeOpts, "use_hard_links", false) // Generate the manifest - var toc internal.ZstdTOC - if err := json.Unmarshal(d.manifest, &toc); err != nil { + var toc internal.TOC + if err := json.Unmarshal(c.manifest, &toc); err != nil { return output, err } whiteoutConverter := archive.GetWhiteoutConverter(options.WhiteoutFormat, options.WhiteoutData) var missingChunks []missingChunk - var mergedEntries []internal.ZstdFileMetadata - if err := maybeDoIDRemap(toc.Entries, options); err != nil { + mergedEntries, err := c.mergeTocEntries(c.fileType, toc.Entries) + if err != nil { return output, err } - - for _, e := range toc.Entries { - if e.Type == TypeChunk { - l := len(mergedEntries) - if l == 0 || mergedEntries[l-1].Type != TypeReg { - return output, errors.New("chunk type without a regular file") - } - mergedEntries[l-1].EndOffset = e.EndOffset - continue - } - mergedEntries = append(mergedEntries, e) + if err := maybeDoIDRemap(mergedEntries, options); err != nil { + return output, err } if options.ForceMask != nil { @@ -768,7 +907,7 @@ func (d *chunkedZstdDiffer) ApplyDiff(dest string, options *archive.TarOptions) } defer unix.Close(dirfd) - otherLayersCache := prepareOtherLayersCache(d.layersMetadata) + otherLayersCache := prepareOtherLayersCache(c.layersMetadata) // hardlinks can point to missing files. So create them after all files // are retrieved @@ -870,7 +1009,7 @@ func (d *chunkedZstdDiffer) ApplyDiff(dest string, options *archive.TarOptions) totalChunksSize += r.Size - found, dstFile, _, err := findFileInOtherLayers(r, dirfd, otherLayersCache, d.layersTarget, useHardLinks) + found, dstFile, _, err := findFileInOtherLayers(&r, dirfd, otherLayersCache, c.layersTarget, useHardLinks) if err != nil { return output, err } @@ -886,7 +1025,7 @@ func (d *chunkedZstdDiffer) ApplyDiff(dest string, options *archive.TarOptions) } if enableHostDedup { - found, dstFile, _, err = findFileOnTheHost(r, dirfd, useHardLinks) + found, dstFile, _, err = findFileOnTheHost(&r, dirfd, useHardLinks) if err != nil { return output, err } @@ -908,9 +1047,11 @@ func (d *chunkedZstdDiffer) ApplyDiff(dest string, options *archive.TarOptions) Offset: uint64(r.Offset), Length: uint64(r.EndOffset - r.Offset), } + file := missingFile{ - File: &toc.Entries[i], + File: &mergedEntries[i], } + missingChunks = append(missingChunks, missingChunk{ RawChunk: rawChunk, Files: []missingFile{ @@ -922,7 +1063,7 @@ func (d *chunkedZstdDiffer) ApplyDiff(dest string, options *archive.TarOptions) // There are some missing files. Prepare a multirange request for the missing chunks. if len(missingChunks) > 0 { missingChunks = mergeMissingChunks(missingChunks, maxNumberMissingChunks) - if err := retrieveMissingFiles(d, dest, dirfd, missingChunks, options); err != nil { + if err := c.retrieveMissingFiles(dest, dirfd, missingChunks, options); err != nil { return output, err } } @@ -938,3 +1079,37 @@ func (d *chunkedZstdDiffer) ApplyDiff(dest string, options *archive.TarOptions) } return output, nil } + +func (c *chunkedDiffer) mergeTocEntries(fileType compressedFileType, entries []internal.FileMetadata) ([]internal.FileMetadata, error) { + var mergedEntries []internal.FileMetadata + var prevEntry *internal.FileMetadata + for _, entry := range entries { + e := entry + + // ignore the metadata files for the estargz format. + if fileType == fileTypeEstargz && (e.Name == estargz.PrefetchLandmark || e.Name == estargz.NoPrefetchLandmark || e.Name == estargz.TOCTarName) { + continue + } + + if e.Type == TypeChunk { + if prevEntry == nil || prevEntry.Type != TypeReg { + return nil, errors.New("chunk type without a regular file") + } + prevEntry.EndOffset = e.EndOffset + continue + } + mergedEntries = append(mergedEntries, e) + prevEntry = &e + } + // stargz/estargz doesn't store EndOffset so let's calculate it here + lastOffset := c.tocOffset + for i := len(mergedEntries) - 1; i >= 0; i-- { + if mergedEntries[i].EndOffset == 0 { + mergedEntries[i].EndOffset = lastOffset + } + if mergedEntries[i].Offset != 0 { + lastOffset = mergedEntries[i].Offset + } + } + return mergedEntries, nil +} diff --git a/vendor/github.com/containers/storage/pkg/config/config.go b/vendor/github.com/containers/storage/pkg/config/config.go index b9e2658a7..e6622cf14 100644 --- a/vendor/github.com/containers/storage/pkg/config/config.go +++ b/vendor/github.com/containers/storage/pkg/config/config.go @@ -93,6 +93,8 @@ type OverlayOptionsConfig struct { MountProgram string `toml:"mount_program"` // Size Size string `toml:"size"` + // Inodes is used to set a maximum inodes of the container image. + Inodes string `toml:"inodes"` // Do not create a bind mount on the storage home SkipMountHome string `toml:"skip_mount_home"` // ForceMask indicates the permissions mask (e.g. "0755") to use for new @@ -296,6 +298,9 @@ func GetGraphDriverOptions(driverName string, options OptionsConfig) []string { } else if options.Size != "" { doptions = append(doptions, fmt.Sprintf("%s.size=%s", driverName, options.Size)) } + if options.Overlay.Inodes != "" { + doptions = append(doptions, fmt.Sprintf("%s.inodes=%s", driverName, options.Overlay.Inodes)) + } if options.Overlay.SkipMountHome != "" { doptions = append(doptions, fmt.Sprintf("%s.skip_mount_home=%s", driverName, options.Overlay.SkipMountHome)) } else if options.SkipMountHome != "" { diff --git a/vendor/github.com/containers/storage/store.go b/vendor/github.com/containers/storage/store.go index 5e16b9e37..8d6f2c4d7 100644 --- a/vendor/github.com/containers/storage/store.go +++ b/vendor/github.com/containers/storage/store.go @@ -3054,10 +3054,15 @@ func (s *store) Layers() ([]Layer, error) { if err != nil { return nil, err } - if err := lstore.LoadLocked(); err != nil { - return nil, err - } - layers, err := lstore.Layers() + + layers, err := func() ([]Layer, error) { + lstore.Lock() + defer lstore.Unlock() + if err := lstore.Load(); err != nil { + return nil, err + } + return lstore.Layers() + }() if err != nil { return nil, err } diff --git a/vendor/github.com/golang/snappy/.gitignore b/vendor/github.com/golang/snappy/.gitignore deleted file mode 100644 index 042091d9b..000000000 --- a/vendor/github.com/golang/snappy/.gitignore +++ /dev/null @@ -1,16 +0,0 @@ -cmd/snappytool/snappytool -testdata/bench - -# These explicitly listed benchmark data files are for an obsolete version of -# snappy_test.go. -testdata/alice29.txt -testdata/asyoulik.txt -testdata/fireworks.jpeg -testdata/geo.protodata -testdata/html -testdata/html_x_4 -testdata/kppkn.gtb -testdata/lcet10.txt -testdata/paper-100k.pdf -testdata/plrabn12.txt -testdata/urls.10K diff --git a/vendor/github.com/golang/snappy/AUTHORS b/vendor/github.com/golang/snappy/AUTHORS deleted file mode 100644 index 203e84eba..000000000 --- a/vendor/github.com/golang/snappy/AUTHORS +++ /dev/null @@ -1,17 +0,0 @@ -# This is the official list of Snappy-Go authors for copyright purposes. -# This file is distinct from the CONTRIBUTORS files. -# See the latter for an explanation. - -# Names should be added to this file as -# Name or Organization <email address> -# The email address is not required for organizations. - -# Please keep the list sorted. - -Amazon.com, Inc -Damian Gryski <dgryski@gmail.com> -Google Inc. -Jan Mercl <0xjnml@gmail.com> -Klaus Post <klauspost@gmail.com> -Rodolfo Carvalho <rhcarvalho@gmail.com> -Sebastien Binet <seb.binet@gmail.com> diff --git a/vendor/github.com/golang/snappy/CONTRIBUTORS b/vendor/github.com/golang/snappy/CONTRIBUTORS deleted file mode 100644 index d9914732b..000000000 --- a/vendor/github.com/golang/snappy/CONTRIBUTORS +++ /dev/null @@ -1,39 +0,0 @@ -# This is the official list of people who can contribute -# (and typically have contributed) code to the Snappy-Go repository. -# The AUTHORS file lists the copyright holders; this file -# lists people. For example, Google employees are listed here -# but not in AUTHORS, because Google holds the copyright. -# -# The submission process automatically checks to make sure -# that people submitting code are listed in this file (by email address). -# -# Names should be added to this file only after verifying that -# the individual or the individual's organization has agreed to -# the appropriate Contributor License Agreement, found here: -# -# http://code.google.com/legal/individual-cla-v1.0.html -# http://code.google.com/legal/corporate-cla-v1.0.html -# -# The agreement for individuals can be filled out on the web. -# -# When adding J Random Contributor's name to this file, -# either J's name or J's organization's name should be -# added to the AUTHORS file, depending on whether the -# individual or corporate CLA was used. - -# Names should be added to this file like so: -# Name <email address> - -# Please keep the list sorted. - -Damian Gryski <dgryski@gmail.com> -Jan Mercl <0xjnml@gmail.com> -Jonathan Swinney <jswinney@amazon.com> -Kai Backman <kaib@golang.org> -Klaus Post <klauspost@gmail.com> -Marc-Antoine Ruel <maruel@chromium.org> -Nigel Tao <nigeltao@golang.org> -Rob Pike <r@golang.org> -Rodolfo Carvalho <rhcarvalho@gmail.com> -Russ Cox <rsc@golang.org> -Sebastien Binet <seb.binet@gmail.com> diff --git a/vendor/github.com/golang/snappy/README b/vendor/github.com/golang/snappy/README deleted file mode 100644 index cea12879a..000000000 --- a/vendor/github.com/golang/snappy/README +++ /dev/null @@ -1,107 +0,0 @@ -The Snappy compression format in the Go programming language. - -To download and install from source: -$ go get github.com/golang/snappy - -Unless otherwise noted, the Snappy-Go source files are distributed -under the BSD-style license found in the LICENSE file. - - - -Benchmarks. - -The golang/snappy benchmarks include compressing (Z) and decompressing (U) ten -or so files, the same set used by the C++ Snappy code (github.com/google/snappy -and note the "google", not "golang"). On an "Intel(R) Core(TM) i7-3770 CPU @ -3.40GHz", Go's GOARCH=amd64 numbers as of 2016-05-29: - -"go test -test.bench=." - -_UFlat0-8 2.19GB/s ± 0% html -_UFlat1-8 1.41GB/s ± 0% urls -_UFlat2-8 23.5GB/s ± 2% jpg -_UFlat3-8 1.91GB/s ± 0% jpg_200 -_UFlat4-8 14.0GB/s ± 1% pdf -_UFlat5-8 1.97GB/s ± 0% html4 -_UFlat6-8 814MB/s ± 0% txt1 -_UFlat7-8 785MB/s ± 0% txt2 -_UFlat8-8 857MB/s ± 0% txt3 -_UFlat9-8 719MB/s ± 1% txt4 -_UFlat10-8 2.84GB/s ± 0% pb -_UFlat11-8 1.05GB/s ± 0% gaviota - -_ZFlat0-8 1.04GB/s ± 0% html -_ZFlat1-8 534MB/s ± 0% urls -_ZFlat2-8 15.7GB/s ± 1% jpg -_ZFlat3-8 740MB/s ± 3% jpg_200 -_ZFlat4-8 9.20GB/s ± 1% pdf -_ZFlat5-8 991MB/s ± 0% html4 -_ZFlat6-8 379MB/s ± 0% txt1 -_ZFlat7-8 352MB/s ± 0% txt2 -_ZFlat8-8 396MB/s ± 1% txt3 -_ZFlat9-8 327MB/s ± 1% txt4 -_ZFlat10-8 1.33GB/s ± 1% pb -_ZFlat11-8 605MB/s ± 1% gaviota - - - -"go test -test.bench=. -tags=noasm" - -_UFlat0-8 621MB/s ± 2% html -_UFlat1-8 494MB/s ± 1% urls -_UFlat2-8 23.2GB/s ± 1% jpg -_UFlat3-8 1.12GB/s ± 1% jpg_200 -_UFlat4-8 4.35GB/s ± 1% pdf -_UFlat5-8 609MB/s ± 0% html4 -_UFlat6-8 296MB/s ± 0% txt1 -_UFlat7-8 288MB/s ± 0% txt2 -_UFlat8-8 309MB/s ± 1% txt3 -_UFlat9-8 280MB/s ± 1% txt4 -_UFlat10-8 753MB/s ± 0% pb -_UFlat11-8 400MB/s ± 0% gaviota - -_ZFlat0-8 409MB/s ± 1% html -_ZFlat1-8 250MB/s ± 1% urls -_ZFlat2-8 12.3GB/s ± 1% jpg -_ZFlat3-8 132MB/s ± 0% jpg_200 -_ZFlat4-8 2.92GB/s ± 0% pdf -_ZFlat5-8 405MB/s ± 1% html4 -_ZFlat6-8 179MB/s ± 1% txt1 -_ZFlat7-8 170MB/s ± 1% txt2 -_ZFlat8-8 189MB/s ± 1% txt3 -_ZFlat9-8 164MB/s ± 1% txt4 -_ZFlat10-8 479MB/s ± 1% pb -_ZFlat11-8 270MB/s ± 1% gaviota - - - -For comparison (Go's encoded output is byte-for-byte identical to C++'s), here -are the numbers from C++ Snappy's - -make CXXFLAGS="-O2 -DNDEBUG -g" clean snappy_unittest.log && cat snappy_unittest.log - -BM_UFlat/0 2.4GB/s html -BM_UFlat/1 1.4GB/s urls -BM_UFlat/2 21.8GB/s jpg -BM_UFlat/3 1.5GB/s jpg_200 -BM_UFlat/4 13.3GB/s pdf -BM_UFlat/5 2.1GB/s html4 -BM_UFlat/6 1.0GB/s txt1 -BM_UFlat/7 959.4MB/s txt2 -BM_UFlat/8 1.0GB/s txt3 -BM_UFlat/9 864.5MB/s txt4 -BM_UFlat/10 2.9GB/s pb -BM_UFlat/11 1.2GB/s gaviota - -BM_ZFlat/0 944.3MB/s html (22.31 %) -BM_ZFlat/1 501.6MB/s urls (47.78 %) -BM_ZFlat/2 14.3GB/s jpg (99.95 %) -BM_ZFlat/3 538.3MB/s jpg_200 (73.00 %) -BM_ZFlat/4 8.3GB/s pdf (83.30 %) -BM_ZFlat/5 903.5MB/s html4 (22.52 %) -BM_ZFlat/6 336.0MB/s txt1 (57.88 %) -BM_ZFlat/7 312.3MB/s txt2 (61.91 %) -BM_ZFlat/8 353.1MB/s txt3 (54.99 %) -BM_ZFlat/9 289.9MB/s txt4 (66.26 %) -BM_ZFlat/10 1.2GB/s pb (19.68 %) -BM_ZFlat/11 527.4MB/s gaviota (37.72 %) diff --git a/vendor/github.com/golang/snappy/decode_amd64.s b/vendor/github.com/golang/snappy/decode_amd64.s deleted file mode 100644 index e6179f65e..000000000 --- a/vendor/github.com/golang/snappy/decode_amd64.s +++ /dev/null @@ -1,490 +0,0 @@ -// Copyright 2016 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// +build !appengine -// +build gc -// +build !noasm - -#include "textflag.h" - -// The asm code generally follows the pure Go code in decode_other.go, except -// where marked with a "!!!". - -// func decode(dst, src []byte) int -// -// All local variables fit into registers. The non-zero stack size is only to -// spill registers and push args when issuing a CALL. The register allocation: -// - AX scratch -// - BX scratch -// - CX length or x -// - DX offset -// - SI &src[s] -// - DI &dst[d] -// + R8 dst_base -// + R9 dst_len -// + R10 dst_base + dst_len -// + R11 src_base -// + R12 src_len -// + R13 src_base + src_len -// - R14 used by doCopy -// - R15 used by doCopy -// -// The registers R8-R13 (marked with a "+") are set at the start of the -// function, and after a CALL returns, and are not otherwise modified. -// -// The d variable is implicitly DI - R8, and len(dst)-d is R10 - DI. -// The s variable is implicitly SI - R11, and len(src)-s is R13 - SI. -TEXT ·decode(SB), NOSPLIT, $48-56 - // Initialize SI, DI and R8-R13. - MOVQ dst_base+0(FP), R8 - MOVQ dst_len+8(FP), R9 - MOVQ R8, DI - MOVQ R8, R10 - ADDQ R9, R10 - MOVQ src_base+24(FP), R11 - MOVQ src_len+32(FP), R12 - MOVQ R11, SI - MOVQ R11, R13 - ADDQ R12, R13 - -loop: - // for s < len(src) - CMPQ SI, R13 - JEQ end - - // CX = uint32(src[s]) - // - // switch src[s] & 0x03 - MOVBLZX (SI), CX - MOVL CX, BX - ANDL $3, BX - CMPL BX, $1 - JAE tagCopy - - // ---------------------------------------- - // The code below handles literal tags. - - // case tagLiteral: - // x := uint32(src[s] >> 2) - // switch - SHRL $2, CX - CMPL CX, $60 - JAE tagLit60Plus - - // case x < 60: - // s++ - INCQ SI - -doLit: - // This is the end of the inner "switch", when we have a literal tag. - // - // We assume that CX == x and x fits in a uint32, where x is the variable - // used in the pure Go decode_other.go code. - - // length = int(x) + 1 - // - // Unlike the pure Go code, we don't need to check if length <= 0 because - // CX can hold 64 bits, so the increment cannot overflow. - INCQ CX - - // Prepare to check if copying length bytes will run past the end of dst or - // src. - // - // AX = len(dst) - d - // BX = len(src) - s - MOVQ R10, AX - SUBQ DI, AX - MOVQ R13, BX - SUBQ SI, BX - - // !!! Try a faster technique for short (16 or fewer bytes) copies. - // - // if length > 16 || len(dst)-d < 16 || len(src)-s < 16 { - // goto callMemmove // Fall back on calling runtime·memmove. - // } - // - // The C++ snappy code calls this TryFastAppend. It also checks len(src)-s - // against 21 instead of 16, because it cannot assume that all of its input - // is contiguous in memory and so it needs to leave enough source bytes to - // read the next tag without refilling buffers, but Go's Decode assumes - // contiguousness (the src argument is a []byte). - CMPQ CX, $16 - JGT callMemmove - CMPQ AX, $16 - JLT callMemmove - CMPQ BX, $16 - JLT callMemmove - - // !!! Implement the copy from src to dst as a 16-byte load and store. - // (Decode's documentation says that dst and src must not overlap.) - // - // This always copies 16 bytes, instead of only length bytes, but that's - // OK. If the input is a valid Snappy encoding then subsequent iterations - // will fix up the overrun. Otherwise, Decode returns a nil []byte (and a - // non-nil error), so the overrun will be ignored. - // - // Note that on amd64, it is legal and cheap to issue unaligned 8-byte or - // 16-byte loads and stores. This technique probably wouldn't be as - // effective on architectures that are fussier about alignment. - MOVOU 0(SI), X0 - MOVOU X0, 0(DI) - - // d += length - // s += length - ADDQ CX, DI - ADDQ CX, SI - JMP loop - -callMemmove: - // if length > len(dst)-d || length > len(src)-s { etc } - CMPQ CX, AX - JGT errCorrupt - CMPQ CX, BX - JGT errCorrupt - - // copy(dst[d:], src[s:s+length]) - // - // This means calling runtime·memmove(&dst[d], &src[s], length), so we push - // DI, SI and CX as arguments. Coincidentally, we also need to spill those - // three registers to the stack, to save local variables across the CALL. - MOVQ DI, 0(SP) - MOVQ SI, 8(SP) - MOVQ CX, 16(SP) - MOVQ DI, 24(SP) - MOVQ SI, 32(SP) - MOVQ CX, 40(SP) - CALL runtime·memmove(SB) - - // Restore local variables: unspill registers from the stack and - // re-calculate R8-R13. - MOVQ 24(SP), DI - MOVQ 32(SP), SI - MOVQ 40(SP), CX - MOVQ dst_base+0(FP), R8 - MOVQ dst_len+8(FP), R9 - MOVQ R8, R10 - ADDQ R9, R10 - MOVQ src_base+24(FP), R11 - MOVQ src_len+32(FP), R12 - MOVQ R11, R13 - ADDQ R12, R13 - - // d += length - // s += length - ADDQ CX, DI - ADDQ CX, SI - JMP loop - -tagLit60Plus: - // !!! This fragment does the - // - // s += x - 58; if uint(s) > uint(len(src)) { etc } - // - // checks. In the asm version, we code it once instead of once per switch case. - ADDQ CX, SI - SUBQ $58, SI - MOVQ SI, BX - SUBQ R11, BX - CMPQ BX, R12 - JA errCorrupt - - // case x == 60: - CMPL CX, $61 - JEQ tagLit61 - JA tagLit62Plus - - // x = uint32(src[s-1]) - MOVBLZX -1(SI), CX - JMP doLit - -tagLit61: - // case x == 61: - // x = uint32(src[s-2]) | uint32(src[s-1])<<8 - MOVWLZX -2(SI), CX - JMP doLit - -tagLit62Plus: - CMPL CX, $62 - JA tagLit63 - - // case x == 62: - // x = uint32(src[s-3]) | uint32(src[s-2])<<8 | uint32(src[s-1])<<16 - MOVWLZX -3(SI), CX - MOVBLZX -1(SI), BX - SHLL $16, BX - ORL BX, CX - JMP doLit - -tagLit63: - // case x == 63: - // x = uint32(src[s-4]) | uint32(src[s-3])<<8 | uint32(src[s-2])<<16 | uint32(src[s-1])<<24 - MOVL -4(SI), CX - JMP doLit - -// The code above handles literal tags. -// ---------------------------------------- -// The code below handles copy tags. - -tagCopy4: - // case tagCopy4: - // s += 5 - ADDQ $5, SI - - // if uint(s) > uint(len(src)) { etc } - MOVQ SI, BX - SUBQ R11, BX - CMPQ BX, R12 - JA errCorrupt - - // length = 1 + int(src[s-5])>>2 - SHRQ $2, CX - INCQ CX - - // offset = int(uint32(src[s-4]) | uint32(src[s-3])<<8 | uint32(src[s-2])<<16 | uint32(src[s-1])<<24) - MOVLQZX -4(SI), DX - JMP doCopy - -tagCopy2: - // case tagCopy2: - // s += 3 - ADDQ $3, SI - - // if uint(s) > uint(len(src)) { etc } - MOVQ SI, BX - SUBQ R11, BX - CMPQ BX, R12 - JA errCorrupt - - // length = 1 + int(src[s-3])>>2 - SHRQ $2, CX - INCQ CX - - // offset = int(uint32(src[s-2]) | uint32(src[s-1])<<8) - MOVWQZX -2(SI), DX - JMP doCopy - -tagCopy: - // We have a copy tag. We assume that: - // - BX == src[s] & 0x03 - // - CX == src[s] - CMPQ BX, $2 - JEQ tagCopy2 - JA tagCopy4 - - // case tagCopy1: - // s += 2 - ADDQ $2, SI - - // if uint(s) > uint(len(src)) { etc } - MOVQ SI, BX - SUBQ R11, BX - CMPQ BX, R12 - JA errCorrupt - - // offset = int(uint32(src[s-2])&0xe0<<3 | uint32(src[s-1])) - MOVQ CX, DX - ANDQ $0xe0, DX - SHLQ $3, DX - MOVBQZX -1(SI), BX - ORQ BX, DX - - // length = 4 + int(src[s-2])>>2&0x7 - SHRQ $2, CX - ANDQ $7, CX - ADDQ $4, CX - -doCopy: - // This is the end of the outer "switch", when we have a copy tag. - // - // We assume that: - // - CX == length && CX > 0 - // - DX == offset - - // if offset <= 0 { etc } - CMPQ DX, $0 - JLE errCorrupt - - // if d < offset { etc } - MOVQ DI, BX - SUBQ R8, BX - CMPQ BX, DX - JLT errCorrupt - - // if length > len(dst)-d { etc } - MOVQ R10, BX - SUBQ DI, BX - CMPQ CX, BX - JGT errCorrupt - - // forwardCopy(dst[d:d+length], dst[d-offset:]); d += length - // - // Set: - // - R14 = len(dst)-d - // - R15 = &dst[d-offset] - MOVQ R10, R14 - SUBQ DI, R14 - MOVQ DI, R15 - SUBQ DX, R15 - - // !!! Try a faster technique for short (16 or fewer bytes) forward copies. - // - // First, try using two 8-byte load/stores, similar to the doLit technique - // above. Even if dst[d:d+length] and dst[d-offset:] can overlap, this is - // still OK if offset >= 8. Note that this has to be two 8-byte load/stores - // and not one 16-byte load/store, and the first store has to be before the - // second load, due to the overlap if offset is in the range [8, 16). - // - // if length > 16 || offset < 8 || len(dst)-d < 16 { - // goto slowForwardCopy - // } - // copy 16 bytes - // d += length - CMPQ CX, $16 - JGT slowForwardCopy - CMPQ DX, $8 - JLT slowForwardCopy - CMPQ R14, $16 - JLT slowForwardCopy - MOVQ 0(R15), AX - MOVQ AX, 0(DI) - MOVQ 8(R15), BX - MOVQ BX, 8(DI) - ADDQ CX, DI - JMP loop - -slowForwardCopy: - // !!! If the forward copy is longer than 16 bytes, or if offset < 8, we - // can still try 8-byte load stores, provided we can overrun up to 10 extra - // bytes. As above, the overrun will be fixed up by subsequent iterations - // of the outermost loop. - // - // The C++ snappy code calls this technique IncrementalCopyFastPath. Its - // commentary says: - // - // ---- - // - // The main part of this loop is a simple copy of eight bytes at a time - // until we've copied (at least) the requested amount of bytes. However, - // if d and d-offset are less than eight bytes apart (indicating a - // repeating pattern of length < 8), we first need to expand the pattern in - // order to get the correct results. For instance, if the buffer looks like - // this, with the eight-byte <d-offset> and <d> patterns marked as - // intervals: - // - // abxxxxxxxxxxxx - // [------] d-offset - // [------] d - // - // a single eight-byte copy from <d-offset> to <d> will repeat the pattern - // once, after which we can move <d> two bytes without moving <d-offset>: - // - // ababxxxxxxxxxx - // [------] d-offset - // [------] d - // - // and repeat the exercise until the two no longer overlap. - // - // This allows us to do very well in the special case of one single byte - // repeated many times, without taking a big hit for more general cases. - // - // The worst case of extra writing past the end of the match occurs when - // offset == 1 and length == 1; the last copy will read from byte positions - // [0..7] and write to [4..11], whereas it was only supposed to write to - // position 1. Thus, ten excess bytes. - // - // ---- - // - // That "10 byte overrun" worst case is confirmed by Go's - // TestSlowForwardCopyOverrun, which also tests the fixUpSlowForwardCopy - // and finishSlowForwardCopy algorithm. - // - // if length > len(dst)-d-10 { - // goto verySlowForwardCopy - // } - SUBQ $10, R14 - CMPQ CX, R14 - JGT verySlowForwardCopy - -makeOffsetAtLeast8: - // !!! As above, expand the pattern so that offset >= 8 and we can use - // 8-byte load/stores. - // - // for offset < 8 { - // copy 8 bytes from dst[d-offset:] to dst[d:] - // length -= offset - // d += offset - // offset += offset - // // The two previous lines together means that d-offset, and therefore - // // R15, is unchanged. - // } - CMPQ DX, $8 - JGE fixUpSlowForwardCopy - MOVQ (R15), BX - MOVQ BX, (DI) - SUBQ DX, CX - ADDQ DX, DI - ADDQ DX, DX - JMP makeOffsetAtLeast8 - -fixUpSlowForwardCopy: - // !!! Add length (which might be negative now) to d (implied by DI being - // &dst[d]) so that d ends up at the right place when we jump back to the - // top of the loop. Before we do that, though, we save DI to AX so that, if - // length is positive, copying the remaining length bytes will write to the - // right place. - MOVQ DI, AX - ADDQ CX, DI - -finishSlowForwardCopy: - // !!! Repeat 8-byte load/stores until length <= 0. Ending with a negative - // length means that we overrun, but as above, that will be fixed up by - // subsequent iterations of the outermost loop. - CMPQ CX, $0 - JLE loop - MOVQ (R15), BX - MOVQ BX, (AX) - ADDQ $8, R15 - ADDQ $8, AX - SUBQ $8, CX - JMP finishSlowForwardCopy - -verySlowForwardCopy: - // verySlowForwardCopy is a simple implementation of forward copy. In C - // parlance, this is a do/while loop instead of a while loop, since we know - // that length > 0. In Go syntax: - // - // for { - // dst[d] = dst[d - offset] - // d++ - // length-- - // if length == 0 { - // break - // } - // } - MOVB (R15), BX - MOVB BX, (DI) - INCQ R15 - INCQ DI - DECQ CX - JNZ verySlowForwardCopy - JMP loop - -// The code above handles copy tags. -// ---------------------------------------- - -end: - // This is the end of the "for s < len(src)". - // - // if d != len(dst) { etc } - CMPQ DI, R10 - JNE errCorrupt - - // return 0 - MOVQ $0, ret+48(FP) - RET - -errCorrupt: - // return decodeErrCodeCorrupt - MOVQ $1, ret+48(FP) - RET diff --git a/vendor/github.com/golang/snappy/decode_arm64.s b/vendor/github.com/golang/snappy/decode_arm64.s deleted file mode 100644 index 7a3ead17e..000000000 --- a/vendor/github.com/golang/snappy/decode_arm64.s +++ /dev/null @@ -1,494 +0,0 @@ -// Copyright 2020 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// +build !appengine -// +build gc -// +build !noasm - -#include "textflag.h" - -// The asm code generally follows the pure Go code in decode_other.go, except -// where marked with a "!!!". - -// func decode(dst, src []byte) int -// -// All local variables fit into registers. The non-zero stack size is only to -// spill registers and push args when issuing a CALL. The register allocation: -// - R2 scratch -// - R3 scratch -// - R4 length or x -// - R5 offset -// - R6 &src[s] -// - R7 &dst[d] -// + R8 dst_base -// + R9 dst_len -// + R10 dst_base + dst_len -// + R11 src_base -// + R12 src_len -// + R13 src_base + src_len -// - R14 used by doCopy -// - R15 used by doCopy -// -// The registers R8-R13 (marked with a "+") are set at the start of the -// function, and after a CALL returns, and are not otherwise modified. -// -// The d variable is implicitly R7 - R8, and len(dst)-d is R10 - R7. -// The s variable is implicitly R6 - R11, and len(src)-s is R13 - R6. -TEXT ·decode(SB), NOSPLIT, $56-56 - // Initialize R6, R7 and R8-R13. - MOVD dst_base+0(FP), R8 - MOVD dst_len+8(FP), R9 - MOVD R8, R7 - MOVD R8, R10 - ADD R9, R10, R10 - MOVD src_base+24(FP), R11 - MOVD src_len+32(FP), R12 - MOVD R11, R6 - MOVD R11, R13 - ADD R12, R13, R13 - -loop: - // for s < len(src) - CMP R13, R6 - BEQ end - - // R4 = uint32(src[s]) - // - // switch src[s] & 0x03 - MOVBU (R6), R4 - MOVW R4, R3 - ANDW $3, R3 - MOVW $1, R1 - CMPW R1, R3 - BGE tagCopy - - // ---------------------------------------- - // The code below handles literal tags. - - // case tagLiteral: - // x := uint32(src[s] >> 2) - // switch - MOVW $60, R1 - LSRW $2, R4, R4 - CMPW R4, R1 - BLS tagLit60Plus - - // case x < 60: - // s++ - ADD $1, R6, R6 - -doLit: - // This is the end of the inner "switch", when we have a literal tag. - // - // We assume that R4 == x and x fits in a uint32, where x is the variable - // used in the pure Go decode_other.go code. - - // length = int(x) + 1 - // - // Unlike the pure Go code, we don't need to check if length <= 0 because - // R4 can hold 64 bits, so the increment cannot overflow. - ADD $1, R4, R4 - - // Prepare to check if copying length bytes will run past the end of dst or - // src. - // - // R2 = len(dst) - d - // R3 = len(src) - s - MOVD R10, R2 - SUB R7, R2, R2 - MOVD R13, R3 - SUB R6, R3, R3 - - // !!! Try a faster technique for short (16 or fewer bytes) copies. - // - // if length > 16 || len(dst)-d < 16 || len(src)-s < 16 { - // goto callMemmove // Fall back on calling runtime·memmove. - // } - // - // The C++ snappy code calls this TryFastAppend. It also checks len(src)-s - // against 21 instead of 16, because it cannot assume that all of its input - // is contiguous in memory and so it needs to leave enough source bytes to - // read the next tag without refilling buffers, but Go's Decode assumes - // contiguousness (the src argument is a []byte). - CMP $16, R4 - BGT callMemmove - CMP $16, R2 - BLT callMemmove - CMP $16, R3 - BLT callMemmove - - // !!! Implement the copy from src to dst as a 16-byte load and store. - // (Decode's documentation says that dst and src must not overlap.) - // - // This always copies 16 bytes, instead of only length bytes, but that's - // OK. If the input is a valid Snappy encoding then subsequent iterations - // will fix up the overrun. Otherwise, Decode returns a nil []byte (and a - // non-nil error), so the overrun will be ignored. - // - // Note that on arm64, it is legal and cheap to issue unaligned 8-byte or - // 16-byte loads and stores. This technique probably wouldn't be as - // effective on architectures that are fussier about alignment. - LDP 0(R6), (R14, R15) - STP (R14, R15), 0(R7) - - // d += length - // s += length - ADD R4, R7, R7 - ADD R4, R6, R6 - B loop - -callMemmove: - // if length > len(dst)-d || length > len(src)-s { etc } - CMP R2, R4 - BGT errCorrupt - CMP R3, R4 - BGT errCorrupt - - // copy(dst[d:], src[s:s+length]) - // - // This means calling runtime·memmove(&dst[d], &src[s], length), so we push - // R7, R6 and R4 as arguments. Coincidentally, we also need to spill those - // three registers to the stack, to save local variables across the CALL. - MOVD R7, 8(RSP) - MOVD R6, 16(RSP) - MOVD R4, 24(RSP) - MOVD R7, 32(RSP) - MOVD R6, 40(RSP) - MOVD R4, 48(RSP) - CALL runtime·memmove(SB) - - // Restore local variables: unspill registers from the stack and - // re-calculate R8-R13. - MOVD 32(RSP), R7 - MOVD 40(RSP), R6 - MOVD 48(RSP), R4 - MOVD dst_base+0(FP), R8 - MOVD dst_len+8(FP), R9 - MOVD R8, R10 - ADD R9, R10, R10 - MOVD src_base+24(FP), R11 - MOVD src_len+32(FP), R12 - MOVD R11, R13 - ADD R12, R13, R13 - - // d += length - // s += length - ADD R4, R7, R7 - ADD R4, R6, R6 - B loop - -tagLit60Plus: - // !!! This fragment does the - // - // s += x - 58; if uint(s) > uint(len(src)) { etc } - // - // checks. In the asm version, we code it once instead of once per switch case. - ADD R4, R6, R6 - SUB $58, R6, R6 - MOVD R6, R3 - SUB R11, R3, R3 - CMP R12, R3 - BGT errCorrupt - - // case x == 60: - MOVW $61, R1 - CMPW R1, R4 - BEQ tagLit61 - BGT tagLit62Plus - - // x = uint32(src[s-1]) - MOVBU -1(R6), R4 - B doLit - -tagLit61: - // case x == 61: - // x = uint32(src[s-2]) | uint32(src[s-1])<<8 - MOVHU -2(R6), R4 - B doLit - -tagLit62Plus: - CMPW $62, R4 - BHI tagLit63 - - // case x == 62: - // x = uint32(src[s-3]) | uint32(src[s-2])<<8 | uint32(src[s-1])<<16 - MOVHU -3(R6), R4 - MOVBU -1(R6), R3 - ORR R3<<16, R4 - B doLit - -tagLit63: - // case x == 63: - // x = uint32(src[s-4]) | uint32(src[s-3])<<8 | uint32(src[s-2])<<16 | uint32(src[s-1])<<24 - MOVWU -4(R6), R4 - B doLit - - // The code above handles literal tags. - // ---------------------------------------- - // The code below handles copy tags. - -tagCopy4: - // case tagCopy4: - // s += 5 - ADD $5, R6, R6 - - // if uint(s) > uint(len(src)) { etc } - MOVD R6, R3 - SUB R11, R3, R3 - CMP R12, R3 - BGT errCorrupt - - // length = 1 + int(src[s-5])>>2 - MOVD $1, R1 - ADD R4>>2, R1, R4 - - // offset = int(uint32(src[s-4]) | uint32(src[s-3])<<8 | uint32(src[s-2])<<16 | uint32(src[s-1])<<24) - MOVWU -4(R6), R5 - B doCopy - -tagCopy2: - // case tagCopy2: - // s += 3 - ADD $3, R6, R6 - - // if uint(s) > uint(len(src)) { etc } - MOVD R6, R3 - SUB R11, R3, R3 - CMP R12, R3 - BGT errCorrupt - - // length = 1 + int(src[s-3])>>2 - MOVD $1, R1 - ADD R4>>2, R1, R4 - - // offset = int(uint32(src[s-2]) | uint32(src[s-1])<<8) - MOVHU -2(R6), R5 - B doCopy - -tagCopy: - // We have a copy tag. We assume that: - // - R3 == src[s] & 0x03 - // - R4 == src[s] - CMP $2, R3 - BEQ tagCopy2 - BGT tagCopy4 - - // case tagCopy1: - // s += 2 - ADD $2, R6, R6 - - // if uint(s) > uint(len(src)) { etc } - MOVD R6, R3 - SUB R11, R3, R3 - CMP R12, R3 - BGT errCorrupt - - // offset = int(uint32(src[s-2])&0xe0<<3 | uint32(src[s-1])) - MOVD R4, R5 - AND $0xe0, R5 - MOVBU -1(R6), R3 - ORR R5<<3, R3, R5 - - // length = 4 + int(src[s-2])>>2&0x7 - MOVD $7, R1 - AND R4>>2, R1, R4 - ADD $4, R4, R4 - -doCopy: - // This is the end of the outer "switch", when we have a copy tag. - // - // We assume that: - // - R4 == length && R4 > 0 - // - R5 == offset - - // if offset <= 0 { etc } - MOVD $0, R1 - CMP R1, R5 - BLE errCorrupt - - // if d < offset { etc } - MOVD R7, R3 - SUB R8, R3, R3 - CMP R5, R3 - BLT errCorrupt - - // if length > len(dst)-d { etc } - MOVD R10, R3 - SUB R7, R3, R3 - CMP R3, R4 - BGT errCorrupt - - // forwardCopy(dst[d:d+length], dst[d-offset:]); d += length - // - // Set: - // - R14 = len(dst)-d - // - R15 = &dst[d-offset] - MOVD R10, R14 - SUB R7, R14, R14 - MOVD R7, R15 - SUB R5, R15, R15 - - // !!! Try a faster technique for short (16 or fewer bytes) forward copies. - // - // First, try using two 8-byte load/stores, similar to the doLit technique - // above. Even if dst[d:d+length] and dst[d-offset:] can overlap, this is - // still OK if offset >= 8. Note that this has to be two 8-byte load/stores - // and not one 16-byte load/store, and the first store has to be before the - // second load, due to the overlap if offset is in the range [8, 16). - // - // if length > 16 || offset < 8 || len(dst)-d < 16 { - // goto slowForwardCopy - // } - // copy 16 bytes - // d += length - CMP $16, R4 - BGT slowForwardCopy - CMP $8, R5 - BLT slowForwardCopy - CMP $16, R14 - BLT slowForwardCopy - MOVD 0(R15), R2 - MOVD R2, 0(R7) - MOVD 8(R15), R3 - MOVD R3, 8(R7) - ADD R4, R7, R7 - B loop - -slowForwardCopy: - // !!! If the forward copy is longer than 16 bytes, or if offset < 8, we - // can still try 8-byte load stores, provided we can overrun up to 10 extra - // bytes. As above, the overrun will be fixed up by subsequent iterations - // of the outermost loop. - // - // The C++ snappy code calls this technique IncrementalCopyFastPath. Its - // commentary says: - // - // ---- - // - // The main part of this loop is a simple copy of eight bytes at a time - // until we've copied (at least) the requested amount of bytes. However, - // if d and d-offset are less than eight bytes apart (indicating a - // repeating pattern of length < 8), we first need to expand the pattern in - // order to get the correct results. For instance, if the buffer looks like - // this, with the eight-byte <d-offset> and <d> patterns marked as - // intervals: - // - // abxxxxxxxxxxxx - // [------] d-offset - // [------] d - // - // a single eight-byte copy from <d-offset> to <d> will repeat the pattern - // once, after which we can move <d> two bytes without moving <d-offset>: - // - // ababxxxxxxxxxx - // [------] d-offset - // [------] d - // - // and repeat the exercise until the two no longer overlap. - // - // This allows us to do very well in the special case of one single byte - // repeated many times, without taking a big hit for more general cases. - // - // The worst case of extra writing past the end of the match occurs when - // offset == 1 and length == 1; the last copy will read from byte positions - // [0..7] and write to [4..11], whereas it was only supposed to write to - // position 1. Thus, ten excess bytes. - // - // ---- - // - // That "10 byte overrun" worst case is confirmed by Go's - // TestSlowForwardCopyOverrun, which also tests the fixUpSlowForwardCopy - // and finishSlowForwardCopy algorithm. - // - // if length > len(dst)-d-10 { - // goto verySlowForwardCopy - // } - SUB $10, R14, R14 - CMP R14, R4 - BGT verySlowForwardCopy - -makeOffsetAtLeast8: - // !!! As above, expand the pattern so that offset >= 8 and we can use - // 8-byte load/stores. - // - // for offset < 8 { - // copy 8 bytes from dst[d-offset:] to dst[d:] - // length -= offset - // d += offset - // offset += offset - // // The two previous lines together means that d-offset, and therefore - // // R15, is unchanged. - // } - CMP $8, R5 - BGE fixUpSlowForwardCopy - MOVD (R15), R3 - MOVD R3, (R7) - SUB R5, R4, R4 - ADD R5, R7, R7 - ADD R5, R5, R5 - B makeOffsetAtLeast8 - -fixUpSlowForwardCopy: - // !!! Add length (which might be negative now) to d (implied by R7 being - // &dst[d]) so that d ends up at the right place when we jump back to the - // top of the loop. Before we do that, though, we save R7 to R2 so that, if - // length is positive, copying the remaining length bytes will write to the - // right place. - MOVD R7, R2 - ADD R4, R7, R7 - -finishSlowForwardCopy: - // !!! Repeat 8-byte load/stores until length <= 0. Ending with a negative - // length means that we overrun, but as above, that will be fixed up by - // subsequent iterations of the outermost loop. - MOVD $0, R1 - CMP R1, R4 - BLE loop - MOVD (R15), R3 - MOVD R3, (R2) - ADD $8, R15, R15 - ADD $8, R2, R2 - SUB $8, R4, R4 - B finishSlowForwardCopy - -verySlowForwardCopy: - // verySlowForwardCopy is a simple implementation of forward copy. In C - // parlance, this is a do/while loop instead of a while loop, since we know - // that length > 0. In Go syntax: - // - // for { - // dst[d] = dst[d - offset] - // d++ - // length-- - // if length == 0 { - // break - // } - // } - MOVB (R15), R3 - MOVB R3, (R7) - ADD $1, R15, R15 - ADD $1, R7, R7 - SUB $1, R4, R4 - CBNZ R4, verySlowForwardCopy - B loop - - // The code above handles copy tags. - // ---------------------------------------- - -end: - // This is the end of the "for s < len(src)". - // - // if d != len(dst) { etc } - CMP R10, R7 - BNE errCorrupt - - // return 0 - MOVD $0, ret+48(FP) - RET - -errCorrupt: - // return decodeErrCodeCorrupt - MOVD $1, R2 - MOVD R2, ret+48(FP) - RET diff --git a/vendor/github.com/golang/snappy/decode_asm.go b/vendor/github.com/golang/snappy/decode_asm.go deleted file mode 100644 index 7082b3491..000000000 --- a/vendor/github.com/golang/snappy/decode_asm.go +++ /dev/null @@ -1,15 +0,0 @@ -// Copyright 2016 The Snappy-Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// +build !appengine -// +build gc -// +build !noasm -// +build amd64 arm64 - -package snappy - -// decode has the same semantics as in decode_other.go. -// -//go:noescape -func decode(dst, src []byte) int diff --git a/vendor/github.com/golang/snappy/encode_amd64.s b/vendor/github.com/golang/snappy/encode_amd64.s deleted file mode 100644 index adfd979fe..000000000 --- a/vendor/github.com/golang/snappy/encode_amd64.s +++ /dev/null @@ -1,730 +0,0 @@ -// Copyright 2016 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// +build !appengine -// +build gc -// +build !noasm - -#include "textflag.h" - -// The XXX lines assemble on Go 1.4, 1.5 and 1.7, but not 1.6, due to a -// Go toolchain regression. See https://github.com/golang/go/issues/15426 and -// https://github.com/golang/snappy/issues/29 -// -// As a workaround, the package was built with a known good assembler, and -// those instructions were disassembled by "objdump -d" to yield the -// 4e 0f b7 7c 5c 78 movzwq 0x78(%rsp,%r11,2),%r15 -// style comments, in AT&T asm syntax. Note that rsp here is a physical -// register, not Go/asm's SP pseudo-register (see https://golang.org/doc/asm). -// The instructions were then encoded as "BYTE $0x.." sequences, which assemble -// fine on Go 1.6. - -// The asm code generally follows the pure Go code in encode_other.go, except -// where marked with a "!!!". - -// ---------------------------------------------------------------------------- - -// func emitLiteral(dst, lit []byte) int -// -// All local variables fit into registers. The register allocation: -// - AX len(lit) -// - BX n -// - DX return value -// - DI &dst[i] -// - R10 &lit[0] -// -// The 24 bytes of stack space is to call runtime·memmove. -// -// The unusual register allocation of local variables, such as R10 for the -// source pointer, matches the allocation used at the call site in encodeBlock, -// which makes it easier to manually inline this function. -TEXT ·emitLiteral(SB), NOSPLIT, $24-56 - MOVQ dst_base+0(FP), DI - MOVQ lit_base+24(FP), R10 - MOVQ lit_len+32(FP), AX - MOVQ AX, DX - MOVL AX, BX - SUBL $1, BX - - CMPL BX, $60 - JLT oneByte - CMPL BX, $256 - JLT twoBytes - -threeBytes: - MOVB $0xf4, 0(DI) - MOVW BX, 1(DI) - ADDQ $3, DI - ADDQ $3, DX - JMP memmove - -twoBytes: - MOVB $0xf0, 0(DI) - MOVB BX, 1(DI) - ADDQ $2, DI - ADDQ $2, DX - JMP memmove - -oneByte: - SHLB $2, BX - MOVB BX, 0(DI) - ADDQ $1, DI - ADDQ $1, DX - -memmove: - MOVQ DX, ret+48(FP) - - // copy(dst[i:], lit) - // - // This means calling runtime·memmove(&dst[i], &lit[0], len(lit)), so we push - // DI, R10 and AX as arguments. - MOVQ DI, 0(SP) - MOVQ R10, 8(SP) - MOVQ AX, 16(SP) - CALL runtime·memmove(SB) - RET - -// ---------------------------------------------------------------------------- - -// func emitCopy(dst []byte, offset, length int) int -// -// All local variables fit into registers. The register allocation: -// - AX length -// - SI &dst[0] -// - DI &dst[i] -// - R11 offset -// -// The unusual register allocation of local variables, such as R11 for the -// offset, matches the allocation used at the call site in encodeBlock, which -// makes it easier to manually inline this function. -TEXT ·emitCopy(SB), NOSPLIT, $0-48 - MOVQ dst_base+0(FP), DI - MOVQ DI, SI - MOVQ offset+24(FP), R11 - MOVQ length+32(FP), AX - -loop0: - // for length >= 68 { etc } - CMPL AX, $68 - JLT step1 - - // Emit a length 64 copy, encoded as 3 bytes. - MOVB $0xfe, 0(DI) - MOVW R11, 1(DI) - ADDQ $3, DI - SUBL $64, AX - JMP loop0 - -step1: - // if length > 64 { etc } - CMPL AX, $64 - JLE step2 - - // Emit a length 60 copy, encoded as 3 bytes. - MOVB $0xee, 0(DI) - MOVW R11, 1(DI) - ADDQ $3, DI - SUBL $60, AX - -step2: - // if length >= 12 || offset >= 2048 { goto step3 } - CMPL AX, $12 - JGE step3 - CMPL R11, $2048 - JGE step3 - - // Emit the remaining copy, encoded as 2 bytes. - MOVB R11, 1(DI) - SHRL $8, R11 - SHLB $5, R11 - SUBB $4, AX - SHLB $2, AX - ORB AX, R11 - ORB $1, R11 - MOVB R11, 0(DI) - ADDQ $2, DI - - // Return the number of bytes written. - SUBQ SI, DI - MOVQ DI, ret+40(FP) - RET - -step3: - // Emit the remaining copy, encoded as 3 bytes. - SUBL $1, AX - SHLB $2, AX - ORB $2, AX - MOVB AX, 0(DI) - MOVW R11, 1(DI) - ADDQ $3, DI - - // Return the number of bytes written. - SUBQ SI, DI - MOVQ DI, ret+40(FP) - RET - -// ---------------------------------------------------------------------------- - -// func extendMatch(src []byte, i, j int) int -// -// All local variables fit into registers. The register allocation: -// - DX &src[0] -// - SI &src[j] -// - R13 &src[len(src) - 8] -// - R14 &src[len(src)] -// - R15 &src[i] -// -// The unusual register allocation of local variables, such as R15 for a source -// pointer, matches the allocation used at the call site in encodeBlock, which -// makes it easier to manually inline this function. -TEXT ·extendMatch(SB), NOSPLIT, $0-48 - MOVQ src_base+0(FP), DX - MOVQ src_len+8(FP), R14 - MOVQ i+24(FP), R15 - MOVQ j+32(FP), SI - ADDQ DX, R14 - ADDQ DX, R15 - ADDQ DX, SI - MOVQ R14, R13 - SUBQ $8, R13 - -cmp8: - // As long as we are 8 or more bytes before the end of src, we can load and - // compare 8 bytes at a time. If those 8 bytes are equal, repeat. - CMPQ SI, R13 - JA cmp1 - MOVQ (R15), AX - MOVQ (SI), BX - CMPQ AX, BX - JNE bsf - ADDQ $8, R15 - ADDQ $8, SI - JMP cmp8 - -bsf: - // If those 8 bytes were not equal, XOR the two 8 byte values, and return - // the index of the first byte that differs. The BSF instruction finds the - // least significant 1 bit, the amd64 architecture is little-endian, and - // the shift by 3 converts a bit index to a byte index. - XORQ AX, BX - BSFQ BX, BX - SHRQ $3, BX - ADDQ BX, SI - - // Convert from &src[ret] to ret. - SUBQ DX, SI - MOVQ SI, ret+40(FP) - RET - -cmp1: - // In src's tail, compare 1 byte at a time. - CMPQ SI, R14 - JAE extendMatchEnd - MOVB (R15), AX - MOVB (SI), BX - CMPB AX, BX - JNE extendMatchEnd - ADDQ $1, R15 - ADDQ $1, SI - JMP cmp1 - -extendMatchEnd: - // Convert from &src[ret] to ret. - SUBQ DX, SI - MOVQ SI, ret+40(FP) - RET - -// ---------------------------------------------------------------------------- - -// func encodeBlock(dst, src []byte) (d int) -// -// All local variables fit into registers, other than "var table". The register -// allocation: -// - AX . . -// - BX . . -// - CX 56 shift (note that amd64 shifts by non-immediates must use CX). -// - DX 64 &src[0], tableSize -// - SI 72 &src[s] -// - DI 80 &dst[d] -// - R9 88 sLimit -// - R10 . &src[nextEmit] -// - R11 96 prevHash, currHash, nextHash, offset -// - R12 104 &src[base], skip -// - R13 . &src[nextS], &src[len(src) - 8] -// - R14 . len(src), bytesBetweenHashLookups, &src[len(src)], x -// - R15 112 candidate -// -// The second column (56, 64, etc) is the stack offset to spill the registers -// when calling other functions. We could pack this slightly tighter, but it's -// simpler to have a dedicated spill map independent of the function called. -// -// "var table [maxTableSize]uint16" takes up 32768 bytes of stack space. An -// extra 56 bytes, to call other functions, and an extra 64 bytes, to spill -// local variables (registers) during calls gives 32768 + 56 + 64 = 32888. -TEXT ·encodeBlock(SB), 0, $32888-56 - MOVQ dst_base+0(FP), DI - MOVQ src_base+24(FP), SI - MOVQ src_len+32(FP), R14 - - // shift, tableSize := uint32(32-8), 1<<8 - MOVQ $24, CX - MOVQ $256, DX - -calcShift: - // for ; tableSize < maxTableSize && tableSize < len(src); tableSize *= 2 { - // shift-- - // } - CMPQ DX, $16384 - JGE varTable - CMPQ DX, R14 - JGE varTable - SUBQ $1, CX - SHLQ $1, DX - JMP calcShift - -varTable: - // var table [maxTableSize]uint16 - // - // In the asm code, unlike the Go code, we can zero-initialize only the - // first tableSize elements. Each uint16 element is 2 bytes and each MOVOU - // writes 16 bytes, so we can do only tableSize/8 writes instead of the - // 2048 writes that would zero-initialize all of table's 32768 bytes. - SHRQ $3, DX - LEAQ table-32768(SP), BX - PXOR X0, X0 - -memclr: - MOVOU X0, 0(BX) - ADDQ $16, BX - SUBQ $1, DX - JNZ memclr - - // !!! DX = &src[0] - MOVQ SI, DX - - // sLimit := len(src) - inputMargin - MOVQ R14, R9 - SUBQ $15, R9 - - // !!! Pre-emptively spill CX, DX and R9 to the stack. Their values don't - // change for the rest of the function. - MOVQ CX, 56(SP) - MOVQ DX, 64(SP) - MOVQ R9, 88(SP) - - // nextEmit := 0 - MOVQ DX, R10 - - // s := 1 - ADDQ $1, SI - - // nextHash := hash(load32(src, s), shift) - MOVL 0(SI), R11 - IMULL $0x1e35a7bd, R11 - SHRL CX, R11 - -outer: - // for { etc } - - // skip := 32 - MOVQ $32, R12 - - // nextS := s - MOVQ SI, R13 - - // candidate := 0 - MOVQ $0, R15 - -inner0: - // for { etc } - - // s := nextS - MOVQ R13, SI - - // bytesBetweenHashLookups := skip >> 5 - MOVQ R12, R14 - SHRQ $5, R14 - - // nextS = s + bytesBetweenHashLookups - ADDQ R14, R13 - - // skip += bytesBetweenHashLookups - ADDQ R14, R12 - - // if nextS > sLimit { goto emitRemainder } - MOVQ R13, AX - SUBQ DX, AX - CMPQ AX, R9 - JA emitRemainder - - // candidate = int(table[nextHash]) - // XXX: MOVWQZX table-32768(SP)(R11*2), R15 - // XXX: 4e 0f b7 7c 5c 78 movzwq 0x78(%rsp,%r11,2),%r15 - BYTE $0x4e - BYTE $0x0f - BYTE $0xb7 - BYTE $0x7c - BYTE $0x5c - BYTE $0x78 - - // table[nextHash] = uint16(s) - MOVQ SI, AX - SUBQ DX, AX - - // XXX: MOVW AX, table-32768(SP)(R11*2) - // XXX: 66 42 89 44 5c 78 mov %ax,0x78(%rsp,%r11,2) - BYTE $0x66 - BYTE $0x42 - BYTE $0x89 - BYTE $0x44 - BYTE $0x5c - BYTE $0x78 - - // nextHash = hash(load32(src, nextS), shift) - MOVL 0(R13), R11 - IMULL $0x1e35a7bd, R11 - SHRL CX, R11 - - // if load32(src, s) != load32(src, candidate) { continue } break - MOVL 0(SI), AX - MOVL (DX)(R15*1), BX - CMPL AX, BX - JNE inner0 - -fourByteMatch: - // As per the encode_other.go code: - // - // A 4-byte match has been found. We'll later see etc. - - // !!! Jump to a fast path for short (<= 16 byte) literals. See the comment - // on inputMargin in encode.go. - MOVQ SI, AX - SUBQ R10, AX - CMPQ AX, $16 - JLE emitLiteralFastPath - - // ---------------------------------------- - // Begin inline of the emitLiteral call. - // - // d += emitLiteral(dst[d:], src[nextEmit:s]) - - MOVL AX, BX - SUBL $1, BX - - CMPL BX, $60 - JLT inlineEmitLiteralOneByte - CMPL BX, $256 - JLT inlineEmitLiteralTwoBytes - -inlineEmitLiteralThreeBytes: - MOVB $0xf4, 0(DI) - MOVW BX, 1(DI) - ADDQ $3, DI - JMP inlineEmitLiteralMemmove - -inlineEmitLiteralTwoBytes: - MOVB $0xf0, 0(DI) - MOVB BX, 1(DI) - ADDQ $2, DI - JMP inlineEmitLiteralMemmove - -inlineEmitLiteralOneByte: - SHLB $2, BX - MOVB BX, 0(DI) - ADDQ $1, DI - -inlineEmitLiteralMemmove: - // Spill local variables (registers) onto the stack; call; unspill. - // - // copy(dst[i:], lit) - // - // This means calling runtime·memmove(&dst[i], &lit[0], len(lit)), so we push - // DI, R10 and AX as arguments. - MOVQ DI, 0(SP) - MOVQ R10, 8(SP) - MOVQ AX, 16(SP) - ADDQ AX, DI // Finish the "d +=" part of "d += emitLiteral(etc)". - MOVQ SI, 72(SP) - MOVQ DI, 80(SP) - MOVQ R15, 112(SP) - CALL runtime·memmove(SB) - MOVQ 56(SP), CX - MOVQ 64(SP), DX - MOVQ 72(SP), SI - MOVQ 80(SP), DI - MOVQ 88(SP), R9 - MOVQ 112(SP), R15 - JMP inner1 - -inlineEmitLiteralEnd: - // End inline of the emitLiteral call. - // ---------------------------------------- - -emitLiteralFastPath: - // !!! Emit the 1-byte encoding "uint8(len(lit)-1)<<2". - MOVB AX, BX - SUBB $1, BX - SHLB $2, BX - MOVB BX, (DI) - ADDQ $1, DI - - // !!! Implement the copy from lit to dst as a 16-byte load and store. - // (Encode's documentation says that dst and src must not overlap.) - // - // This always copies 16 bytes, instead of only len(lit) bytes, but that's - // OK. Subsequent iterations will fix up the overrun. - // - // Note that on amd64, it is legal and cheap to issue unaligned 8-byte or - // 16-byte loads and stores. This technique probably wouldn't be as - // effective on architectures that are fussier about alignment. - MOVOU 0(R10), X0 - MOVOU X0, 0(DI) - ADDQ AX, DI - -inner1: - // for { etc } - - // base := s - MOVQ SI, R12 - - // !!! offset := base - candidate - MOVQ R12, R11 - SUBQ R15, R11 - SUBQ DX, R11 - - // ---------------------------------------- - // Begin inline of the extendMatch call. - // - // s = extendMatch(src, candidate+4, s+4) - - // !!! R14 = &src[len(src)] - MOVQ src_len+32(FP), R14 - ADDQ DX, R14 - - // !!! R13 = &src[len(src) - 8] - MOVQ R14, R13 - SUBQ $8, R13 - - // !!! R15 = &src[candidate + 4] - ADDQ $4, R15 - ADDQ DX, R15 - - // !!! s += 4 - ADDQ $4, SI - -inlineExtendMatchCmp8: - // As long as we are 8 or more bytes before the end of src, we can load and - // compare 8 bytes at a time. If those 8 bytes are equal, repeat. - CMPQ SI, R13 - JA inlineExtendMatchCmp1 - MOVQ (R15), AX - MOVQ (SI), BX - CMPQ AX, BX - JNE inlineExtendMatchBSF - ADDQ $8, R15 - ADDQ $8, SI - JMP inlineExtendMatchCmp8 - -inlineExtendMatchBSF: - // If those 8 bytes were not equal, XOR the two 8 byte values, and return - // the index of the first byte that differs. The BSF instruction finds the - // least significant 1 bit, the amd64 architecture is little-endian, and - // the shift by 3 converts a bit index to a byte index. - XORQ AX, BX - BSFQ BX, BX - SHRQ $3, BX - ADDQ BX, SI - JMP inlineExtendMatchEnd - -inlineExtendMatchCmp1: - // In src's tail, compare 1 byte at a time. - CMPQ SI, R14 - JAE inlineExtendMatchEnd - MOVB (R15), AX - MOVB (SI), BX - CMPB AX, BX - JNE inlineExtendMatchEnd - ADDQ $1, R15 - ADDQ $1, SI - JMP inlineExtendMatchCmp1 - -inlineExtendMatchEnd: - // End inline of the extendMatch call. - // ---------------------------------------- - - // ---------------------------------------- - // Begin inline of the emitCopy call. - // - // d += emitCopy(dst[d:], base-candidate, s-base) - - // !!! length := s - base - MOVQ SI, AX - SUBQ R12, AX - -inlineEmitCopyLoop0: - // for length >= 68 { etc } - CMPL AX, $68 - JLT inlineEmitCopyStep1 - - // Emit a length 64 copy, encoded as 3 bytes. - MOVB $0xfe, 0(DI) - MOVW R11, 1(DI) - ADDQ $3, DI - SUBL $64, AX - JMP inlineEmitCopyLoop0 - -inlineEmitCopyStep1: - // if length > 64 { etc } - CMPL AX, $64 - JLE inlineEmitCopyStep2 - - // Emit a length 60 copy, encoded as 3 bytes. - MOVB $0xee, 0(DI) - MOVW R11, 1(DI) - ADDQ $3, DI - SUBL $60, AX - -inlineEmitCopyStep2: - // if length >= 12 || offset >= 2048 { goto inlineEmitCopyStep3 } - CMPL AX, $12 - JGE inlineEmitCopyStep3 - CMPL R11, $2048 - JGE inlineEmitCopyStep3 - - // Emit the remaining copy, encoded as 2 bytes. - MOVB R11, 1(DI) - SHRL $8, R11 - SHLB $5, R11 - SUBB $4, AX - SHLB $2, AX - ORB AX, R11 - ORB $1, R11 - MOVB R11, 0(DI) - ADDQ $2, DI - JMP inlineEmitCopyEnd - -inlineEmitCopyStep3: - // Emit the remaining copy, encoded as 3 bytes. - SUBL $1, AX - SHLB $2, AX - ORB $2, AX - MOVB AX, 0(DI) - MOVW R11, 1(DI) - ADDQ $3, DI - -inlineEmitCopyEnd: - // End inline of the emitCopy call. - // ---------------------------------------- - - // nextEmit = s - MOVQ SI, R10 - - // if s >= sLimit { goto emitRemainder } - MOVQ SI, AX - SUBQ DX, AX - CMPQ AX, R9 - JAE emitRemainder - - // As per the encode_other.go code: - // - // We could immediately etc. - - // x := load64(src, s-1) - MOVQ -1(SI), R14 - - // prevHash := hash(uint32(x>>0), shift) - MOVL R14, R11 - IMULL $0x1e35a7bd, R11 - SHRL CX, R11 - - // table[prevHash] = uint16(s-1) - MOVQ SI, AX - SUBQ DX, AX - SUBQ $1, AX - - // XXX: MOVW AX, table-32768(SP)(R11*2) - // XXX: 66 42 89 44 5c 78 mov %ax,0x78(%rsp,%r11,2) - BYTE $0x66 - BYTE $0x42 - BYTE $0x89 - BYTE $0x44 - BYTE $0x5c - BYTE $0x78 - - // currHash := hash(uint32(x>>8), shift) - SHRQ $8, R14 - MOVL R14, R11 - IMULL $0x1e35a7bd, R11 - SHRL CX, R11 - - // candidate = int(table[currHash]) - // XXX: MOVWQZX table-32768(SP)(R11*2), R15 - // XXX: 4e 0f b7 7c 5c 78 movzwq 0x78(%rsp,%r11,2),%r15 - BYTE $0x4e - BYTE $0x0f - BYTE $0xb7 - BYTE $0x7c - BYTE $0x5c - BYTE $0x78 - - // table[currHash] = uint16(s) - ADDQ $1, AX - - // XXX: MOVW AX, table-32768(SP)(R11*2) - // XXX: 66 42 89 44 5c 78 mov %ax,0x78(%rsp,%r11,2) - BYTE $0x66 - BYTE $0x42 - BYTE $0x89 - BYTE $0x44 - BYTE $0x5c - BYTE $0x78 - - // if uint32(x>>8) == load32(src, candidate) { continue } - MOVL (DX)(R15*1), BX - CMPL R14, BX - JEQ inner1 - - // nextHash = hash(uint32(x>>16), shift) - SHRQ $8, R14 - MOVL R14, R11 - IMULL $0x1e35a7bd, R11 - SHRL CX, R11 - - // s++ - ADDQ $1, SI - - // break out of the inner1 for loop, i.e. continue the outer loop. - JMP outer - -emitRemainder: - // if nextEmit < len(src) { etc } - MOVQ src_len+32(FP), AX - ADDQ DX, AX - CMPQ R10, AX - JEQ encodeBlockEnd - - // d += emitLiteral(dst[d:], src[nextEmit:]) - // - // Push args. - MOVQ DI, 0(SP) - MOVQ $0, 8(SP) // Unnecessary, as the callee ignores it, but conservative. - MOVQ $0, 16(SP) // Unnecessary, as the callee ignores it, but conservative. - MOVQ R10, 24(SP) - SUBQ R10, AX - MOVQ AX, 32(SP) - MOVQ AX, 40(SP) // Unnecessary, as the callee ignores it, but conservative. - - // Spill local variables (registers) onto the stack; call; unspill. - MOVQ DI, 80(SP) - CALL ·emitLiteral(SB) - MOVQ 80(SP), DI - - // Finish the "d +=" part of "d += emitLiteral(etc)". - ADDQ 48(SP), DI - -encodeBlockEnd: - MOVQ dst_base+0(FP), AX - SUBQ AX, DI - MOVQ DI, d+48(FP) - RET diff --git a/vendor/github.com/golang/snappy/encode_arm64.s b/vendor/github.com/golang/snappy/encode_arm64.s deleted file mode 100644 index bf83667d7..000000000 --- a/vendor/github.com/golang/snappy/encode_arm64.s +++ /dev/null @@ -1,722 +0,0 @@ -// Copyright 2020 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// +build !appengine -// +build gc -// +build !noasm - -#include "textflag.h" - -// The asm code generally follows the pure Go code in encode_other.go, except -// where marked with a "!!!". - -// ---------------------------------------------------------------------------- - -// func emitLiteral(dst, lit []byte) int -// -// All local variables fit into registers. The register allocation: -// - R3 len(lit) -// - R4 n -// - R6 return value -// - R8 &dst[i] -// - R10 &lit[0] -// -// The 32 bytes of stack space is to call runtime·memmove. -// -// The unusual register allocation of local variables, such as R10 for the -// source pointer, matches the allocation used at the call site in encodeBlock, -// which makes it easier to manually inline this function. -TEXT ·emitLiteral(SB), NOSPLIT, $32-56 - MOVD dst_base+0(FP), R8 - MOVD lit_base+24(FP), R10 - MOVD lit_len+32(FP), R3 - MOVD R3, R6 - MOVW R3, R4 - SUBW $1, R4, R4 - - CMPW $60, R4 - BLT oneByte - CMPW $256, R4 - BLT twoBytes - -threeBytes: - MOVD $0xf4, R2 - MOVB R2, 0(R8) - MOVW R4, 1(R8) - ADD $3, R8, R8 - ADD $3, R6, R6 - B memmove - -twoBytes: - MOVD $0xf0, R2 - MOVB R2, 0(R8) - MOVB R4, 1(R8) - ADD $2, R8, R8 - ADD $2, R6, R6 - B memmove - -oneByte: - LSLW $2, R4, R4 - MOVB R4, 0(R8) - ADD $1, R8, R8 - ADD $1, R6, R6 - -memmove: - MOVD R6, ret+48(FP) - - // copy(dst[i:], lit) - // - // This means calling runtime·memmove(&dst[i], &lit[0], len(lit)), so we push - // R8, R10 and R3 as arguments. - MOVD R8, 8(RSP) - MOVD R10, 16(RSP) - MOVD R3, 24(RSP) - CALL runtime·memmove(SB) - RET - -// ---------------------------------------------------------------------------- - -// func emitCopy(dst []byte, offset, length int) int -// -// All local variables fit into registers. The register allocation: -// - R3 length -// - R7 &dst[0] -// - R8 &dst[i] -// - R11 offset -// -// The unusual register allocation of local variables, such as R11 for the -// offset, matches the allocation used at the call site in encodeBlock, which -// makes it easier to manually inline this function. -TEXT ·emitCopy(SB), NOSPLIT, $0-48 - MOVD dst_base+0(FP), R8 - MOVD R8, R7 - MOVD offset+24(FP), R11 - MOVD length+32(FP), R3 - -loop0: - // for length >= 68 { etc } - CMPW $68, R3 - BLT step1 - - // Emit a length 64 copy, encoded as 3 bytes. - MOVD $0xfe, R2 - MOVB R2, 0(R8) - MOVW R11, 1(R8) - ADD $3, R8, R8 - SUB $64, R3, R3 - B loop0 - -step1: - // if length > 64 { etc } - CMP $64, R3 - BLE step2 - - // Emit a length 60 copy, encoded as 3 bytes. - MOVD $0xee, R2 - MOVB R2, 0(R8) - MOVW R11, 1(R8) - ADD $3, R8, R8 - SUB $60, R3, R3 - -step2: - // if length >= 12 || offset >= 2048 { goto step3 } - CMP $12, R3 - BGE step3 - CMPW $2048, R11 - BGE step3 - - // Emit the remaining copy, encoded as 2 bytes. - MOVB R11, 1(R8) - LSRW $3, R11, R11 - AND $0xe0, R11, R11 - SUB $4, R3, R3 - LSLW $2, R3 - AND $0xff, R3, R3 - ORRW R3, R11, R11 - ORRW $1, R11, R11 - MOVB R11, 0(R8) - ADD $2, R8, R8 - - // Return the number of bytes written. - SUB R7, R8, R8 - MOVD R8, ret+40(FP) - RET - -step3: - // Emit the remaining copy, encoded as 3 bytes. - SUB $1, R3, R3 - AND $0xff, R3, R3 - LSLW $2, R3, R3 - ORRW $2, R3, R3 - MOVB R3, 0(R8) - MOVW R11, 1(R8) - ADD $3, R8, R8 - - // Return the number of bytes written. - SUB R7, R8, R8 - MOVD R8, ret+40(FP) - RET - -// ---------------------------------------------------------------------------- - -// func extendMatch(src []byte, i, j int) int -// -// All local variables fit into registers. The register allocation: -// - R6 &src[0] -// - R7 &src[j] -// - R13 &src[len(src) - 8] -// - R14 &src[len(src)] -// - R15 &src[i] -// -// The unusual register allocation of local variables, such as R15 for a source -// pointer, matches the allocation used at the call site in encodeBlock, which -// makes it easier to manually inline this function. -TEXT ·extendMatch(SB), NOSPLIT, $0-48 - MOVD src_base+0(FP), R6 - MOVD src_len+8(FP), R14 - MOVD i+24(FP), R15 - MOVD j+32(FP), R7 - ADD R6, R14, R14 - ADD R6, R15, R15 - ADD R6, R7, R7 - MOVD R14, R13 - SUB $8, R13, R13 - -cmp8: - // As long as we are 8 or more bytes before the end of src, we can load and - // compare 8 bytes at a time. If those 8 bytes are equal, repeat. - CMP R13, R7 - BHI cmp1 - MOVD (R15), R3 - MOVD (R7), R4 - CMP R4, R3 - BNE bsf - ADD $8, R15, R15 - ADD $8, R7, R7 - B cmp8 - -bsf: - // If those 8 bytes were not equal, XOR the two 8 byte values, and return - // the index of the first byte that differs. - // RBIT reverses the bit order, then CLZ counts the leading zeros, the - // combination of which finds the least significant bit which is set. - // The arm64 architecture is little-endian, and the shift by 3 converts - // a bit index to a byte index. - EOR R3, R4, R4 - RBIT R4, R4 - CLZ R4, R4 - ADD R4>>3, R7, R7 - - // Convert from &src[ret] to ret. - SUB R6, R7, R7 - MOVD R7, ret+40(FP) - RET - -cmp1: - // In src's tail, compare 1 byte at a time. - CMP R7, R14 - BLS extendMatchEnd - MOVB (R15), R3 - MOVB (R7), R4 - CMP R4, R3 - BNE extendMatchEnd - ADD $1, R15, R15 - ADD $1, R7, R7 - B cmp1 - -extendMatchEnd: - // Convert from &src[ret] to ret. - SUB R6, R7, R7 - MOVD R7, ret+40(FP) - RET - -// ---------------------------------------------------------------------------- - -// func encodeBlock(dst, src []byte) (d int) -// -// All local variables fit into registers, other than "var table". The register -// allocation: -// - R3 . . -// - R4 . . -// - R5 64 shift -// - R6 72 &src[0], tableSize -// - R7 80 &src[s] -// - R8 88 &dst[d] -// - R9 96 sLimit -// - R10 . &src[nextEmit] -// - R11 104 prevHash, currHash, nextHash, offset -// - R12 112 &src[base], skip -// - R13 . &src[nextS], &src[len(src) - 8] -// - R14 . len(src), bytesBetweenHashLookups, &src[len(src)], x -// - R15 120 candidate -// - R16 . hash constant, 0x1e35a7bd -// - R17 . &table -// - . 128 table -// -// The second column (64, 72, etc) is the stack offset to spill the registers -// when calling other functions. We could pack this slightly tighter, but it's -// simpler to have a dedicated spill map independent of the function called. -// -// "var table [maxTableSize]uint16" takes up 32768 bytes of stack space. An -// extra 64 bytes, to call other functions, and an extra 64 bytes, to spill -// local variables (registers) during calls gives 32768 + 64 + 64 = 32896. -TEXT ·encodeBlock(SB), 0, $32896-56 - MOVD dst_base+0(FP), R8 - MOVD src_base+24(FP), R7 - MOVD src_len+32(FP), R14 - - // shift, tableSize := uint32(32-8), 1<<8 - MOVD $24, R5 - MOVD $256, R6 - MOVW $0xa7bd, R16 - MOVKW $(0x1e35<<16), R16 - -calcShift: - // for ; tableSize < maxTableSize && tableSize < len(src); tableSize *= 2 { - // shift-- - // } - MOVD $16384, R2 - CMP R2, R6 - BGE varTable - CMP R14, R6 - BGE varTable - SUB $1, R5, R5 - LSL $1, R6, R6 - B calcShift - -varTable: - // var table [maxTableSize]uint16 - // - // In the asm code, unlike the Go code, we can zero-initialize only the - // first tableSize elements. Each uint16 element is 2 bytes and each - // iterations writes 64 bytes, so we can do only tableSize/32 writes - // instead of the 2048 writes that would zero-initialize all of table's - // 32768 bytes. This clear could overrun the first tableSize elements, but - // it won't overrun the allocated stack size. - ADD $128, RSP, R17 - MOVD R17, R4 - - // !!! R6 = &src[tableSize] - ADD R6<<1, R17, R6 - -memclr: - STP.P (ZR, ZR), 64(R4) - STP (ZR, ZR), -48(R4) - STP (ZR, ZR), -32(R4) - STP (ZR, ZR), -16(R4) - CMP R4, R6 - BHI memclr - - // !!! R6 = &src[0] - MOVD R7, R6 - - // sLimit := len(src) - inputMargin - MOVD R14, R9 - SUB $15, R9, R9 - - // !!! Pre-emptively spill R5, R6 and R9 to the stack. Their values don't - // change for the rest of the function. - MOVD R5, 64(RSP) - MOVD R6, 72(RSP) - MOVD R9, 96(RSP) - - // nextEmit := 0 - MOVD R6, R10 - - // s := 1 - ADD $1, R7, R7 - - // nextHash := hash(load32(src, s), shift) - MOVW 0(R7), R11 - MULW R16, R11, R11 - LSRW R5, R11, R11 - -outer: - // for { etc } - - // skip := 32 - MOVD $32, R12 - - // nextS := s - MOVD R7, R13 - - // candidate := 0 - MOVD $0, R15 - -inner0: - // for { etc } - - // s := nextS - MOVD R13, R7 - - // bytesBetweenHashLookups := skip >> 5 - MOVD R12, R14 - LSR $5, R14, R14 - - // nextS = s + bytesBetweenHashLookups - ADD R14, R13, R13 - - // skip += bytesBetweenHashLookups - ADD R14, R12, R12 - - // if nextS > sLimit { goto emitRemainder } - MOVD R13, R3 - SUB R6, R3, R3 - CMP R9, R3 - BHI emitRemainder - - // candidate = int(table[nextHash]) - MOVHU 0(R17)(R11<<1), R15 - - // table[nextHash] = uint16(s) - MOVD R7, R3 - SUB R6, R3, R3 - - MOVH R3, 0(R17)(R11<<1) - - // nextHash = hash(load32(src, nextS), shift) - MOVW 0(R13), R11 - MULW R16, R11 - LSRW R5, R11, R11 - - // if load32(src, s) != load32(src, candidate) { continue } break - MOVW 0(R7), R3 - MOVW (R6)(R15*1), R4 - CMPW R4, R3 - BNE inner0 - -fourByteMatch: - // As per the encode_other.go code: - // - // A 4-byte match has been found. We'll later see etc. - - // !!! Jump to a fast path for short (<= 16 byte) literals. See the comment - // on inputMargin in encode.go. - MOVD R7, R3 - SUB R10, R3, R3 - CMP $16, R3 - BLE emitLiteralFastPath - - // ---------------------------------------- - // Begin inline of the emitLiteral call. - // - // d += emitLiteral(dst[d:], src[nextEmit:s]) - - MOVW R3, R4 - SUBW $1, R4, R4 - - MOVW $60, R2 - CMPW R2, R4 - BLT inlineEmitLiteralOneByte - MOVW $256, R2 - CMPW R2, R4 - BLT inlineEmitLiteralTwoBytes - -inlineEmitLiteralThreeBytes: - MOVD $0xf4, R1 - MOVB R1, 0(R8) - MOVW R4, 1(R8) - ADD $3, R8, R8 - B inlineEmitLiteralMemmove - -inlineEmitLiteralTwoBytes: - MOVD $0xf0, R1 - MOVB R1, 0(R8) - MOVB R4, 1(R8) - ADD $2, R8, R8 - B inlineEmitLiteralMemmove - -inlineEmitLiteralOneByte: - LSLW $2, R4, R4 - MOVB R4, 0(R8) - ADD $1, R8, R8 - -inlineEmitLiteralMemmove: - // Spill local variables (registers) onto the stack; call; unspill. - // - // copy(dst[i:], lit) - // - // This means calling runtime·memmove(&dst[i], &lit[0], len(lit)), so we push - // R8, R10 and R3 as arguments. - MOVD R8, 8(RSP) - MOVD R10, 16(RSP) - MOVD R3, 24(RSP) - - // Finish the "d +=" part of "d += emitLiteral(etc)". - ADD R3, R8, R8 - MOVD R7, 80(RSP) - MOVD R8, 88(RSP) - MOVD R15, 120(RSP) - CALL runtime·memmove(SB) - MOVD 64(RSP), R5 - MOVD 72(RSP), R6 - MOVD 80(RSP), R7 - MOVD 88(RSP), R8 - MOVD 96(RSP), R9 - MOVD 120(RSP), R15 - ADD $128, RSP, R17 - MOVW $0xa7bd, R16 - MOVKW $(0x1e35<<16), R16 - B inner1 - -inlineEmitLiteralEnd: - // End inline of the emitLiteral call. - // ---------------------------------------- - -emitLiteralFastPath: - // !!! Emit the 1-byte encoding "uint8(len(lit)-1)<<2". - MOVB R3, R4 - SUBW $1, R4, R4 - AND $0xff, R4, R4 - LSLW $2, R4, R4 - MOVB R4, (R8) - ADD $1, R8, R8 - - // !!! Implement the copy from lit to dst as a 16-byte load and store. - // (Encode's documentation says that dst and src must not overlap.) - // - // This always copies 16 bytes, instead of only len(lit) bytes, but that's - // OK. Subsequent iterations will fix up the overrun. - // - // Note that on arm64, it is legal and cheap to issue unaligned 8-byte or - // 16-byte loads and stores. This technique probably wouldn't be as - // effective on architectures that are fussier about alignment. - LDP 0(R10), (R0, R1) - STP (R0, R1), 0(R8) - ADD R3, R8, R8 - -inner1: - // for { etc } - - // base := s - MOVD R7, R12 - - // !!! offset := base - candidate - MOVD R12, R11 - SUB R15, R11, R11 - SUB R6, R11, R11 - - // ---------------------------------------- - // Begin inline of the extendMatch call. - // - // s = extendMatch(src, candidate+4, s+4) - - // !!! R14 = &src[len(src)] - MOVD src_len+32(FP), R14 - ADD R6, R14, R14 - - // !!! R13 = &src[len(src) - 8] - MOVD R14, R13 - SUB $8, R13, R13 - - // !!! R15 = &src[candidate + 4] - ADD $4, R15, R15 - ADD R6, R15, R15 - - // !!! s += 4 - ADD $4, R7, R7 - -inlineExtendMatchCmp8: - // As long as we are 8 or more bytes before the end of src, we can load and - // compare 8 bytes at a time. If those 8 bytes are equal, repeat. - CMP R13, R7 - BHI inlineExtendMatchCmp1 - MOVD (R15), R3 - MOVD (R7), R4 - CMP R4, R3 - BNE inlineExtendMatchBSF - ADD $8, R15, R15 - ADD $8, R7, R7 - B inlineExtendMatchCmp8 - -inlineExtendMatchBSF: - // If those 8 bytes were not equal, XOR the two 8 byte values, and return - // the index of the first byte that differs. - // RBIT reverses the bit order, then CLZ counts the leading zeros, the - // combination of which finds the least significant bit which is set. - // The arm64 architecture is little-endian, and the shift by 3 converts - // a bit index to a byte index. - EOR R3, R4, R4 - RBIT R4, R4 - CLZ R4, R4 - ADD R4>>3, R7, R7 - B inlineExtendMatchEnd - -inlineExtendMatchCmp1: - // In src's tail, compare 1 byte at a time. - CMP R7, R14 - BLS inlineExtendMatchEnd - MOVB (R15), R3 - MOVB (R7), R4 - CMP R4, R3 - BNE inlineExtendMatchEnd - ADD $1, R15, R15 - ADD $1, R7, R7 - B inlineExtendMatchCmp1 - -inlineExtendMatchEnd: - // End inline of the extendMatch call. - // ---------------------------------------- - - // ---------------------------------------- - // Begin inline of the emitCopy call. - // - // d += emitCopy(dst[d:], base-candidate, s-base) - - // !!! length := s - base - MOVD R7, R3 - SUB R12, R3, R3 - -inlineEmitCopyLoop0: - // for length >= 68 { etc } - MOVW $68, R2 - CMPW R2, R3 - BLT inlineEmitCopyStep1 - - // Emit a length 64 copy, encoded as 3 bytes. - MOVD $0xfe, R1 - MOVB R1, 0(R8) - MOVW R11, 1(R8) - ADD $3, R8, R8 - SUBW $64, R3, R3 - B inlineEmitCopyLoop0 - -inlineEmitCopyStep1: - // if length > 64 { etc } - MOVW $64, R2 - CMPW R2, R3 - BLE inlineEmitCopyStep2 - - // Emit a length 60 copy, encoded as 3 bytes. - MOVD $0xee, R1 - MOVB R1, 0(R8) - MOVW R11, 1(R8) - ADD $3, R8, R8 - SUBW $60, R3, R3 - -inlineEmitCopyStep2: - // if length >= 12 || offset >= 2048 { goto inlineEmitCopyStep3 } - MOVW $12, R2 - CMPW R2, R3 - BGE inlineEmitCopyStep3 - MOVW $2048, R2 - CMPW R2, R11 - BGE inlineEmitCopyStep3 - - // Emit the remaining copy, encoded as 2 bytes. - MOVB R11, 1(R8) - LSRW $8, R11, R11 - LSLW $5, R11, R11 - SUBW $4, R3, R3 - AND $0xff, R3, R3 - LSLW $2, R3, R3 - ORRW R3, R11, R11 - ORRW $1, R11, R11 - MOVB R11, 0(R8) - ADD $2, R8, R8 - B inlineEmitCopyEnd - -inlineEmitCopyStep3: - // Emit the remaining copy, encoded as 3 bytes. - SUBW $1, R3, R3 - LSLW $2, R3, R3 - ORRW $2, R3, R3 - MOVB R3, 0(R8) - MOVW R11, 1(R8) - ADD $3, R8, R8 - -inlineEmitCopyEnd: - // End inline of the emitCopy call. - // ---------------------------------------- - - // nextEmit = s - MOVD R7, R10 - - // if s >= sLimit { goto emitRemainder } - MOVD R7, R3 - SUB R6, R3, R3 - CMP R3, R9 - BLS emitRemainder - - // As per the encode_other.go code: - // - // We could immediately etc. - - // x := load64(src, s-1) - MOVD -1(R7), R14 - - // prevHash := hash(uint32(x>>0), shift) - MOVW R14, R11 - MULW R16, R11, R11 - LSRW R5, R11, R11 - - // table[prevHash] = uint16(s-1) - MOVD R7, R3 - SUB R6, R3, R3 - SUB $1, R3, R3 - - MOVHU R3, 0(R17)(R11<<1) - - // currHash := hash(uint32(x>>8), shift) - LSR $8, R14, R14 - MOVW R14, R11 - MULW R16, R11, R11 - LSRW R5, R11, R11 - - // candidate = int(table[currHash]) - MOVHU 0(R17)(R11<<1), R15 - - // table[currHash] = uint16(s) - ADD $1, R3, R3 - MOVHU R3, 0(R17)(R11<<1) - - // if uint32(x>>8) == load32(src, candidate) { continue } - MOVW (R6)(R15*1), R4 - CMPW R4, R14 - BEQ inner1 - - // nextHash = hash(uint32(x>>16), shift) - LSR $8, R14, R14 - MOVW R14, R11 - MULW R16, R11, R11 - LSRW R5, R11, R11 - - // s++ - ADD $1, R7, R7 - - // break out of the inner1 for loop, i.e. continue the outer loop. - B outer - -emitRemainder: - // if nextEmit < len(src) { etc } - MOVD src_len+32(FP), R3 - ADD R6, R3, R3 - CMP R3, R10 - BEQ encodeBlockEnd - - // d += emitLiteral(dst[d:], src[nextEmit:]) - // - // Push args. - MOVD R8, 8(RSP) - MOVD $0, 16(RSP) // Unnecessary, as the callee ignores it, but conservative. - MOVD $0, 24(RSP) // Unnecessary, as the callee ignores it, but conservative. - MOVD R10, 32(RSP) - SUB R10, R3, R3 - MOVD R3, 40(RSP) - MOVD R3, 48(RSP) // Unnecessary, as the callee ignores it, but conservative. - - // Spill local variables (registers) onto the stack; call; unspill. - MOVD R8, 88(RSP) - CALL ·emitLiteral(SB) - MOVD 88(RSP), R8 - - // Finish the "d +=" part of "d += emitLiteral(etc)". - MOVD 56(RSP), R1 - ADD R1, R8, R8 - -encodeBlockEnd: - MOVD dst_base+0(FP), R3 - SUB R3, R8, R8 - MOVD R8, d+48(FP) - RET diff --git a/vendor/github.com/golang/snappy/encode_asm.go b/vendor/github.com/golang/snappy/encode_asm.go deleted file mode 100644 index 107c1e714..000000000 --- a/vendor/github.com/golang/snappy/encode_asm.go +++ /dev/null @@ -1,30 +0,0 @@ -// Copyright 2016 The Snappy-Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// +build !appengine -// +build gc -// +build !noasm -// +build amd64 arm64 - -package snappy - -// emitLiteral has the same semantics as in encode_other.go. -// -//go:noescape -func emitLiteral(dst, lit []byte) int - -// emitCopy has the same semantics as in encode_other.go. -// -//go:noescape -func emitCopy(dst []byte, offset, length int) int - -// extendMatch has the same semantics as in encode_other.go. -// -//go:noescape -func extendMatch(src []byte, i, j int) int - -// encodeBlock has the same semantics as in encode_other.go. -// -//go:noescape -func encodeBlock(dst, src []byte) (d int) diff --git a/vendor/github.com/golang/snappy/go.mod b/vendor/github.com/golang/snappy/go.mod deleted file mode 100644 index f6406bb2c..000000000 --- a/vendor/github.com/golang/snappy/go.mod +++ /dev/null @@ -1 +0,0 @@ -module github.com/golang/snappy diff --git a/vendor/github.com/klauspost/compress/LICENSE b/vendor/github.com/klauspost/compress/LICENSE index 1eb75ef68..6cd1e9627 100644 --- a/vendor/github.com/klauspost/compress/LICENSE +++ b/vendor/github.com/klauspost/compress/LICENSE @@ -26,3 +26,267 @@ DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +------------------ + +Files: gzhttp/* + + Apache License + Version 2.0, January 2004 + http://www.apache.org/licenses/ + + TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION + + 1. 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All rights reserved. + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions are +met: + + * Redistributions of source code must retain the above copyright +notice, this list of conditions and the following disclaimer. + * Redistributions in binary form must reproduce the above +copyright notice, this list of conditions and the following disclaimer +in the documentation and/or other materials provided with the +distribution. + * Neither the name of Google Inc. nor the names of its +contributors may be used to endorse or promote products derived from +this software without specific prior written permission. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. diff --git a/vendor/github.com/klauspost/compress/README.md b/vendor/github.com/klauspost/compress/README.md index d6a26466c..235dc7cc6 100644 --- a/vendor/github.com/klauspost/compress/README.md +++ b/vendor/github.com/klauspost/compress/README.md @@ -17,6 +17,10 @@ This package provides various compression algorithms. # changelog
+* Aug 12, 2021 (v1.13.4)
+ * Add [snappy replacement package](https://github.com/klauspost/compress/tree/master/snappy).
+ * zstd: Fix incorrect encoding in "best" mode [#415](https://github.com/klauspost/compress/pull/415)
+
* Aug 3, 2021 (v1.13.3)
* zstd: Improve Best compression [#404](https://github.com/klauspost/compress/pull/404)
diff --git a/vendor/github.com/klauspost/compress/flate/inflate.go b/vendor/github.com/klauspost/compress/flate/inflate.go index 16bc51408..d1edb356c 100644 --- a/vendor/github.com/klauspost/compress/flate/inflate.go +++ b/vendor/github.com/klauspost/compress/flate/inflate.go @@ -9,10 +9,10 @@ package flate import ( "bufio" + "compress/flate" "fmt" "io" "math/bits" - "strconv" "sync" ) @@ -41,11 +41,7 @@ var fixedOnce sync.Once var fixedHuffmanDecoder huffmanDecoder // A CorruptInputError reports the presence of corrupt input at a given offset. -type CorruptInputError int64 - -func (e CorruptInputError) Error() string { - return "flate: corrupt input before offset " + strconv.FormatInt(int64(e), 10) -} +type CorruptInputError = flate.CorruptInputError // An InternalError reports an error in the flate code itself. type InternalError string @@ -55,26 +51,12 @@ func (e InternalError) Error() string { return "flate: internal error: " + strin // A ReadError reports an error encountered while reading input. // // Deprecated: No longer returned. -type ReadError struct { - Offset int64 // byte offset where error occurred - Err error // error returned by underlying Read -} - -func (e *ReadError) Error() string { - return "flate: read error at offset " + strconv.FormatInt(e.Offset, 10) + ": " + e.Err.Error() -} +type ReadError = flate.ReadError // A WriteError reports an error encountered while writing output. // // Deprecated: No longer returned. -type WriteError struct { - Offset int64 // byte offset where error occurred - Err error // error returned by underlying Write -} - -func (e *WriteError) Error() string { - return "flate: write error at offset " + strconv.FormatInt(e.Offset, 10) + ": " + e.Err.Error() -} +type WriteError = flate.WriteError // Resetter resets a ReadCloser returned by NewReader or NewReaderDict to // to switch to a new underlying Reader. This permits reusing a ReadCloser diff --git a/vendor/github.com/klauspost/compress/flate/regmask_other.go b/vendor/github.com/klauspost/compress/flate/regmask_other.go index f477a5d6e..1b7a2cbd7 100644 --- a/vendor/github.com/klauspost/compress/flate/regmask_other.go +++ b/vendor/github.com/klauspost/compress/flate/regmask_other.go @@ -1,4 +1,5 @@ -//+build !amd64 +//go:build !amd64 +// +build !amd64 package flate diff --git a/vendor/github.com/klauspost/compress/go.mod b/vendor/github.com/klauspost/compress/go.mod index 2a4f0a41f..5aa64a436 100644 --- a/vendor/github.com/klauspost/compress/go.mod +++ b/vendor/github.com/klauspost/compress/go.mod @@ -1,5 +1,3 @@ module github.com/klauspost/compress -go 1.13 - -require github.com/golang/snappy v0.0.3 // indirect +go 1.15 diff --git a/vendor/github.com/klauspost/compress/go.sum b/vendor/github.com/klauspost/compress/go.sum index 73204cafa..e69de29bb 100644 --- a/vendor/github.com/klauspost/compress/go.sum +++ b/vendor/github.com/klauspost/compress/go.sum @@ -1,2 +0,0 @@ -github.com/golang/snappy v0.0.3 h1:fHPg5GQYlCeLIPB9BZqMVR5nR9A+IM5zcgeTdjMYmLA= -github.com/golang/snappy v0.0.3/go.mod h1:/XxbfmMg8lxefKM7IXC3fBNl/7bRcc72aCRzEWrmP2Q= diff --git a/vendor/github.com/golang/snappy/LICENSE b/vendor/github.com/klauspost/compress/internal/snapref/LICENSE index 6050c10f4..6050c10f4 100644 --- a/vendor/github.com/golang/snappy/LICENSE +++ b/vendor/github.com/klauspost/compress/internal/snapref/LICENSE diff --git a/vendor/github.com/golang/snappy/decode.go b/vendor/github.com/klauspost/compress/internal/snapref/decode.go index f1e04b172..40796a49d 100644 --- a/vendor/github.com/golang/snappy/decode.go +++ b/vendor/github.com/klauspost/compress/internal/snapref/decode.go @@ -2,7 +2,7 @@ // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. -package snappy +package snapref import ( "encoding/binary" @@ -118,32 +118,23 @@ func (r *Reader) readFull(p []byte, allowEOF bool) (ok bool) { return true } -// Read satisfies the io.Reader interface. -func (r *Reader) Read(p []byte) (int, error) { - if r.err != nil { - return 0, r.err - } - for { - if r.i < r.j { - n := copy(p, r.decoded[r.i:r.j]) - r.i += n - return n, nil - } +func (r *Reader) fill() error { + for r.i >= r.j { if !r.readFull(r.buf[:4], true) { - return 0, r.err + return r.err } chunkType := r.buf[0] if !r.readHeader { if chunkType != chunkTypeStreamIdentifier { r.err = ErrCorrupt - return 0, r.err + return r.err } r.readHeader = true } chunkLen := int(r.buf[1]) | int(r.buf[2])<<8 | int(r.buf[3])<<16 if chunkLen > len(r.buf) { r.err = ErrUnsupported - return 0, r.err + return r.err } // The chunk types are specified at @@ -153,11 +144,11 @@ func (r *Reader) Read(p []byte) (int, error) { // Section 4.2. Compressed data (chunk type 0x00). if chunkLen < checksumSize { r.err = ErrCorrupt - return 0, r.err + return r.err } buf := r.buf[:chunkLen] if !r.readFull(buf, false) { - return 0, r.err + return r.err } checksum := uint32(buf[0]) | uint32(buf[1])<<8 | uint32(buf[2])<<16 | uint32(buf[3])<<24 buf = buf[checksumSize:] @@ -165,19 +156,19 @@ func (r *Reader) Read(p []byte) (int, error) { n, err := DecodedLen(buf) if err != nil { r.err = err - return 0, r.err + return r.err } if n > len(r.decoded) { r.err = ErrCorrupt - return 0, r.err + return r.err } if _, err := Decode(r.decoded, buf); err != nil { r.err = err - return 0, r.err + return r.err } if crc(r.decoded[:n]) != checksum { r.err = ErrCorrupt - return 0, r.err + return r.err } r.i, r.j = 0, n continue @@ -186,25 +177,25 @@ func (r *Reader) Read(p []byte) (int, error) { // Section 4.3. Uncompressed data (chunk type 0x01). if chunkLen < checksumSize { r.err = ErrCorrupt - return 0, r.err + return r.err } buf := r.buf[:checksumSize] if !r.readFull(buf, false) { - return 0, r.err + return r.err } checksum := uint32(buf[0]) | uint32(buf[1])<<8 | uint32(buf[2])<<16 | uint32(buf[3])<<24 // Read directly into r.decoded instead of via r.buf. n := chunkLen - checksumSize if n > len(r.decoded) { r.err = ErrCorrupt - return 0, r.err + return r.err } if !r.readFull(r.decoded[:n], false) { - return 0, r.err + return r.err } if crc(r.decoded[:n]) != checksum { r.err = ErrCorrupt - return 0, r.err + return r.err } r.i, r.j = 0, n continue @@ -213,15 +204,15 @@ func (r *Reader) Read(p []byte) (int, error) { // Section 4.1. Stream identifier (chunk type 0xff). if chunkLen != len(magicBody) { r.err = ErrCorrupt - return 0, r.err + return r.err } if !r.readFull(r.buf[:len(magicBody)], false) { - return 0, r.err + return r.err } for i := 0; i < len(magicBody); i++ { if r.buf[i] != magicBody[i] { r.err = ErrCorrupt - return 0, r.err + return r.err } } continue @@ -230,12 +221,44 @@ func (r *Reader) Read(p []byte) (int, error) { if chunkType <= 0x7f { // Section 4.5. Reserved unskippable chunks (chunk types 0x02-0x7f). r.err = ErrUnsupported - return 0, r.err + return r.err } // Section 4.4 Padding (chunk type 0xfe). // Section 4.6. Reserved skippable chunks (chunk types 0x80-0xfd). if !r.readFull(r.buf[:chunkLen], false) { - return 0, r.err + return r.err } } + + return nil +} + +// Read satisfies the io.Reader interface. +func (r *Reader) Read(p []byte) (int, error) { + if r.err != nil { + return 0, r.err + } + + if err := r.fill(); err != nil { + return 0, err + } + + n := copy(p, r.decoded[r.i:r.j]) + r.i += n + return n, nil +} + +// ReadByte satisfies the io.ByteReader interface. +func (r *Reader) ReadByte() (byte, error) { + if r.err != nil { + return 0, r.err + } + + if err := r.fill(); err != nil { + return 0, err + } + + c := r.decoded[r.i] + r.i++ + return c, nil } diff --git a/vendor/github.com/golang/snappy/decode_other.go b/vendor/github.com/klauspost/compress/internal/snapref/decode_other.go index 2f672be55..77395a6b8 100644 --- a/vendor/github.com/golang/snappy/decode_other.go +++ b/vendor/github.com/klauspost/compress/internal/snapref/decode_other.go @@ -2,9 +2,7 @@ // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. -// +build !amd64,!arm64 appengine !gc noasm - -package snappy +package snapref // decode writes the decoding of src to dst. It assumes that the varint-encoded // length of the decompressed bytes has already been read, and that len(dst) diff --git a/vendor/github.com/golang/snappy/encode.go b/vendor/github.com/klauspost/compress/internal/snapref/encode.go index 7f2365707..13c6040a5 100644 --- a/vendor/github.com/golang/snappy/encode.go +++ b/vendor/github.com/klauspost/compress/internal/snapref/encode.go @@ -2,7 +2,7 @@ // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. -package snappy +package snapref import ( "encoding/binary" diff --git a/vendor/github.com/golang/snappy/encode_other.go b/vendor/github.com/klauspost/compress/internal/snapref/encode_other.go index 296d7f0be..511bba65d 100644 --- a/vendor/github.com/golang/snappy/encode_other.go +++ b/vendor/github.com/klauspost/compress/internal/snapref/encode_other.go @@ -2,9 +2,7 @@ // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. -// +build !amd64,!arm64 appengine !gc noasm - -package snappy +package snapref func load32(b []byte, i int) uint32 { b = b[i : i+4 : len(b)] // Help the compiler eliminate bounds checks on the next line. diff --git a/vendor/github.com/golang/snappy/snappy.go b/vendor/github.com/klauspost/compress/internal/snapref/snappy.go index ece692ea4..34d01f4aa 100644 --- a/vendor/github.com/golang/snappy/snappy.go +++ b/vendor/github.com/klauspost/compress/internal/snapref/snappy.go @@ -2,7 +2,7 @@ // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. -// Package snappy implements the Snappy compression format. It aims for very +// Package snapref implements the Snappy compression format. It aims for very // high speeds and reasonable compression. // // There are actually two Snappy formats: block and stream. They are related, @@ -17,7 +17,7 @@ // // The canonical, C++ implementation is at https://github.com/google/snappy and // it only implements the block format. -package snappy // import "github.com/golang/snappy" +package snapref import ( "hash/crc32" diff --git a/vendor/github.com/klauspost/compress/s2sx.mod b/vendor/github.com/klauspost/compress/s2sx.mod index a9faf7a02..2263853fc 100644 --- a/vendor/github.com/klauspost/compress/s2sx.mod +++ b/vendor/github.com/klauspost/compress/s2sx.mod @@ -2,4 +2,3 @@ module github.com/klauspost/compress go 1.16 -require github.com/golang/snappy v0.0.3 // indirect diff --git a/vendor/github.com/klauspost/compress/s2sx.sum b/vendor/github.com/klauspost/compress/s2sx.sum index 73204cafa..e69de29bb 100644 --- a/vendor/github.com/klauspost/compress/s2sx.sum +++ b/vendor/github.com/klauspost/compress/s2sx.sum @@ -1,2 +0,0 @@ -github.com/golang/snappy v0.0.3 h1:fHPg5GQYlCeLIPB9BZqMVR5nR9A+IM5zcgeTdjMYmLA= -github.com/golang/snappy v0.0.3/go.mod h1:/XxbfmMg8lxefKM7IXC3fBNl/7bRcc72aCRzEWrmP2Q= diff --git a/vendor/github.com/klauspost/compress/zstd/internal/xxhash/xxhash_amd64.go b/vendor/github.com/klauspost/compress/zstd/internal/xxhash/xxhash_amd64.go index 35318d7c4..3ddbd5c0b 100644 --- a/vendor/github.com/klauspost/compress/zstd/internal/xxhash/xxhash_amd64.go +++ b/vendor/github.com/klauspost/compress/zstd/internal/xxhash/xxhash_amd64.go @@ -1,6 +1,5 @@ -// +build !appengine -// +build gc -// +build !purego +//go:build !appengine && gc && !purego +// +build !appengine,gc,!purego package xxhash diff --git a/vendor/github.com/klauspost/compress/zstd/internal/xxhash/xxhash_other.go b/vendor/github.com/klauspost/compress/zstd/internal/xxhash/xxhash_other.go index 4a5a82160..1f52f296e 100644 --- a/vendor/github.com/klauspost/compress/zstd/internal/xxhash/xxhash_other.go +++ b/vendor/github.com/klauspost/compress/zstd/internal/xxhash/xxhash_other.go @@ -1,3 +1,4 @@ +//go:build !amd64 || appengine || !gc || purego // +build !amd64 appengine !gc purego package xxhash diff --git a/vendor/github.com/klauspost/compress/zstd/snappy.go b/vendor/github.com/klauspost/compress/zstd/snappy.go index 0372b1714..9e1baad73 100644 --- a/vendor/github.com/klauspost/compress/zstd/snappy.go +++ b/vendor/github.com/klauspost/compress/zstd/snappy.go @@ -10,8 +10,8 @@ import ( "hash/crc32" "io" - "github.com/golang/snappy" "github.com/klauspost/compress/huff0" + snappy "github.com/klauspost/compress/internal/snapref" ) const ( diff --git a/vendor/github.com/klauspost/compress/zstd/zip.go b/vendor/github.com/klauspost/compress/zstd/zip.go index 9325b928a..967f29b31 100644 --- a/vendor/github.com/klauspost/compress/zstd/zip.go +++ b/vendor/github.com/klauspost/compress/zstd/zip.go @@ -64,8 +64,9 @@ func (r *pooledZipReader) Close() error { } type pooledZipWriter struct { - mu sync.Mutex // guards Close and Read - enc *Encoder + mu sync.Mutex // guards Close and Read + enc *Encoder + pool *sync.Pool } func (w *pooledZipWriter) Write(p []byte) (n int, err error) { @@ -83,7 +84,7 @@ func (w *pooledZipWriter) Close() error { var err error if w.enc != nil { err = w.enc.Close() - zipReaderPool.Put(w.enc) + w.pool.Put(w.enc) w.enc = nil } return err @@ -104,7 +105,7 @@ func ZipCompressor(opts ...EOption) func(w io.Writer) (io.WriteCloser, error) { return nil, err } } - return &pooledZipWriter{enc: enc}, nil + return &pooledZipWriter{enc: enc, pool: &pool}, nil } } diff --git a/vendor/golang.org/x/sync/errgroup/errgroup.go b/vendor/golang.org/x/sync/errgroup/errgroup.go new file mode 100644 index 000000000..9857fe53d --- /dev/null +++ b/vendor/golang.org/x/sync/errgroup/errgroup.go @@ -0,0 +1,66 @@ +// Copyright 2016 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// Package errgroup provides synchronization, error propagation, and Context +// cancelation for groups of goroutines working on subtasks of a common task. +package errgroup + +import ( + "context" + "sync" +) + +// A Group is a collection of goroutines working on subtasks that are part of +// the same overall task. +// +// A zero Group is valid and does not cancel on error. +type Group struct { + cancel func() + + wg sync.WaitGroup + + errOnce sync.Once + err error +} + +// WithContext returns a new Group and an associated Context derived from ctx. +// +// The derived Context is canceled the first time a function passed to Go +// returns a non-nil error or the first time Wait returns, whichever occurs +// first. +func WithContext(ctx context.Context) (*Group, context.Context) { + ctx, cancel := context.WithCancel(ctx) + return &Group{cancel: cancel}, ctx +} + +// Wait blocks until all function calls from the Go method have returned, then +// returns the first non-nil error (if any) from them. +func (g *Group) Wait() error { + g.wg.Wait() + if g.cancel != nil { + g.cancel() + } + return g.err +} + +// Go calls the given function in a new goroutine. +// +// The first call to return a non-nil error cancels the group; its error will be +// returned by Wait. +func (g *Group) Go(f func() error) { + g.wg.Add(1) + + go func() { + defer g.wg.Done() + + if err := f(); err != nil { + g.errOnce.Do(func() { + g.err = err + if g.cancel != nil { + g.cancel() + } + }) + } + }() +} diff --git a/vendor/modules.txt b/vendor/modules.txt index 26a390863..e3bdd32f8 100644 --- a/vendor/modules.txt +++ b/vendor/modules.txt @@ -10,7 +10,7 @@ github.com/Microsoft/go-winio/backuptar github.com/Microsoft/go-winio/pkg/guid github.com/Microsoft/go-winio/pkg/security github.com/Microsoft/go-winio/vhd -# github.com/Microsoft/hcsshim v0.8.20 +# github.com/Microsoft/hcsshim v0.8.22 github.com/Microsoft/hcsshim github.com/Microsoft/hcsshim/computestorage github.com/Microsoft/hcsshim/internal/cow @@ -63,6 +63,9 @@ github.com/containerd/containerd/log github.com/containerd/containerd/pkg/userns github.com/containerd/containerd/platforms github.com/containerd/containerd/sys +# github.com/containerd/stargz-snapshotter/estargz v0.8.0 +github.com/containerd/stargz-snapshotter/estargz +github.com/containerd/stargz-snapshotter/estargz/errorutil # github.com/containernetworking/cni v0.8.1 github.com/containernetworking/cni/libcni github.com/containernetworking/cni/pkg/invoke @@ -94,7 +97,7 @@ github.com/containers/buildah/pkg/overlay github.com/containers/buildah/pkg/parse github.com/containers/buildah/pkg/rusage github.com/containers/buildah/util -# github.com/containers/common v0.43.3-0.20210902095222-a7acc160fb25 +# github.com/containers/common v0.44.0 github.com/containers/common/libimage github.com/containers/common/libimage/manifests github.com/containers/common/pkg/apparmor @@ -199,7 +202,7 @@ github.com/containers/psgo/internal/dev github.com/containers/psgo/internal/host github.com/containers/psgo/internal/proc github.com/containers/psgo/internal/process -# github.com/containers/storage v1.35.0 +# github.com/containers/storage v1.36.0 github.com/containers/storage github.com/containers/storage/drivers github.com/containers/storage/drivers/aufs @@ -363,8 +366,6 @@ github.com/golang/protobuf/ptypes github.com/golang/protobuf/ptypes/any github.com/golang/protobuf/ptypes/duration github.com/golang/protobuf/ptypes/timestamp -# github.com/golang/snappy v0.0.3 -github.com/golang/snappy # github.com/google/go-cmp v0.5.6 github.com/google/go-cmp/cmp github.com/google/go-cmp/cmp/internal/diff @@ -408,11 +409,12 @@ github.com/json-iterator/go # github.com/juju/ansiterm v0.0.0-20180109212912-720a0952cc2a github.com/juju/ansiterm github.com/juju/ansiterm/tabwriter -# github.com/klauspost/compress v1.13.4 +# github.com/klauspost/compress v1.13.5 github.com/klauspost/compress github.com/klauspost/compress/flate github.com/klauspost/compress/fse github.com/klauspost/compress/huff0 +github.com/klauspost/compress/internal/snapref github.com/klauspost/compress/zstd github.com/klauspost/compress/zstd/internal/xxhash # github.com/klauspost/pgzip v1.2.5 @@ -676,6 +678,7 @@ golang.org/x/net/internal/timeseries golang.org/x/net/proxy golang.org/x/net/trace # golang.org/x/sync v0.0.0-20210220032951-036812b2e83c +golang.org/x/sync/errgroup golang.org/x/sync/semaphore # golang.org/x/sys v0.0.0-20210906170528-6f6e22806c34 golang.org/x/sys/cpu |