diff options
Diffstat (limited to 'vendor/github.com')
18 files changed, 572 insertions, 209 deletions
diff --git a/vendor/github.com/containers/storage/VERSION b/vendor/github.com/containers/storage/VERSION index 14bee92c9..27ddcc14d 100644 --- a/vendor/github.com/containers/storage/VERSION +++ b/vendor/github.com/containers/storage/VERSION @@ -1 +1 @@ -1.23.2 +1.23.4 diff --git a/vendor/github.com/containers/storage/go.mod b/vendor/github.com/containers/storage/go.mod index 77eef7598..7a568273f 100644 --- a/vendor/github.com/containers/storage/go.mod +++ b/vendor/github.com/containers/storage/go.mod @@ -9,9 +9,10 @@ require ( github.com/docker/go-units v0.4.0 github.com/hashicorp/go-multierror v1.1.0 github.com/klauspost/compress v1.10.11 - github.com/klauspost/pgzip v1.2.4 + github.com/klauspost/pgzip v1.2.5 github.com/mattn/go-shellwords v1.0.10 github.com/mistifyio/go-zfs v2.1.1+incompatible + github.com/moby/sys/mountinfo v0.1.3 github.com/opencontainers/go-digest v1.0.0 github.com/opencontainers/runc v1.0.0-rc91 github.com/opencontainers/runtime-spec v1.0.3-0.20200520003142-237cc4f519e2 diff --git a/vendor/github.com/containers/storage/go.sum b/vendor/github.com/containers/storage/go.sum index 04d48eb4f..dba69025f 100644 --- a/vendor/github.com/containers/storage/go.sum +++ b/vendor/github.com/containers/storage/go.sum @@ -64,8 +64,8 @@ github.com/kisielk/errcheck v1.2.0/go.mod h1:/BMXB+zMLi60iA8Vv6Ksmxu/1UDYcXs4uQL github.com/kisielk/gotool v1.0.0/go.mod h1:XhKaO+MFFWcvkIS/tQcRk01m1F5IRFswLeQ+oQHNcck= github.com/klauspost/compress v1.10.11 h1:K9z59aO18Aywg2b/WSgBaUX99mHy2BES18Cr5lBKZHk= github.com/klauspost/compress v1.10.11/go.mod h1:aoV0uJVorq1K+umq18yTdKaF57EivdYsUV+/s2qKfXs= -github.com/klauspost/pgzip v1.2.4 h1:TQ7CNpYKovDOmqzRHKxJh0BeaBI7UdQZYc6p7pMQh1A= -github.com/klauspost/pgzip v1.2.4/go.mod h1:Ch1tH69qFZu15pkjo5kYi6mth2Zzwzt50oCQKQE9RUs= +github.com/klauspost/pgzip v1.2.5 h1:qnWYvvKqedOF2ulHpMG72XQol4ILEJ8k2wwRl/Km8oE= +github.com/klauspost/pgzip v1.2.5/go.mod h1:Ch1tH69qFZu15pkjo5kYi6mth2Zzwzt50oCQKQE9RUs= github.com/konsorten/go-windows-terminal-sequences v1.0.1/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ= github.com/konsorten/go-windows-terminal-sequences v1.0.3 h1:CE8S1cTafDpPvMhIxNJKvHsGVBgn1xWYf1NbHQhywc8= github.com/konsorten/go-windows-terminal-sequences v1.0.3/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ= diff --git a/vendor/github.com/containers/storage/layers.go b/vendor/github.com/containers/storage/layers.go index dc21f75fd..52577299c 100644 --- a/vendor/github.com/containers/storage/layers.go +++ b/vendor/github.com/containers/storage/layers.go @@ -1342,6 +1342,7 @@ func (r *layerStore) ApplyDiff(to string, diff io.Reader) (size int64, err error if err != nil { return -1, err } + defer idLogger.Close() payload, err := asm.NewInputTarStream(io.TeeReader(uncompressed, io.MultiWriter(uncompressedCounter, idLogger)), metadata, storage.NewDiscardFilePutter()) if err != nil { return -1, err @@ -1356,7 +1357,6 @@ func (r *layerStore) ApplyDiff(to string, diff io.Reader) (size int64, err error return -1, err } compressor.Close() - idLogger.Close() if err == nil { if err := os.MkdirAll(filepath.Dir(r.tspath(layer.ID)), 0700); err != nil { return -1, err diff --git a/vendor/github.com/containers/storage/pkg/mount/mount.go b/vendor/github.com/containers/storage/pkg/mount/mount.go index 4b888dceb..8273ab5a9 100644 --- a/vendor/github.com/containers/storage/pkg/mount/mount.go +++ b/vendor/github.com/containers/storage/pkg/mount/mount.go @@ -4,8 +4,6 @@ import ( "sort" "strconv" "strings" - - "github.com/containers/storage/pkg/fileutils" ) // mountError holds an error from a mount or unmount operation @@ -43,33 +41,6 @@ func (e *mountError) Cause() error { return e.err } -// GetMounts retrieves a list of mounts for the current running process. -func GetMounts() ([]*Info, error) { - return parseMountTable() -} - -// Mounted determines if a specified mountpoint has been mounted. -// On Linux it looks at /proc/self/mountinfo and on Solaris at mnttab. -func Mounted(mountpoint string) (bool, error) { - entries, err := parseMountTable() - if err != nil { - return false, err - } - - mountpoint, err = fileutils.ReadSymlinkedPath(mountpoint) - if err != nil { - return false, err - } - - // Search the table for the mountpoint - for _, e := range entries { - if e.Mountpoint == mountpoint { - return true, nil - } - } - return false, nil -} - // Mount will mount filesystem according to the specified configuration, on the // condition that the target path is *not* already mounted. Options must be // specified like the mount or fstab unix commands: "opt1=val1,opt2=val2". See diff --git a/vendor/github.com/containers/storage/pkg/mount/mountinfo.go b/vendor/github.com/containers/storage/pkg/mount/mountinfo.go index e3fc3535e..efc6c406e 100644 --- a/vendor/github.com/containers/storage/pkg/mount/mountinfo.go +++ b/vendor/github.com/containers/storage/pkg/mount/mountinfo.go @@ -1,40 +1,21 @@ package mount -// Info reveals information about a particular mounted filesystem. This -// struct is populated from the content in the /proc/<pid>/mountinfo file. -type Info struct { - // ID is a unique identifier of the mount (may be reused after umount). - ID int +import ( + "github.com/containers/storage/pkg/fileutils" + "github.com/moby/sys/mountinfo" +) - // Parent indicates the ID of the mount parent (or of self for the top of the - // mount tree). - Parent int +type Info = mountinfo.Info - // Major indicates one half of the device ID which identifies the device class. - Major int - - // Minor indicates one half of the device ID which identifies a specific - // instance of device. - Minor int - - // Root of the mount within the filesystem. - Root string - - // Mountpoint indicates the mount point relative to the process's root. - Mountpoint string - - // Opts represents mount-specific options. - Opts string - - // Optional represents optional fields. - Optional string - - // Fstype indicates the type of filesystem, such as EXT3. - Fstype string - - // Source indicates filesystem specific information or "none". - Source string +func GetMounts() ([]*Info, error) { + return mountinfo.GetMounts(nil) +} - // VfsOpts represents per super block options. - VfsOpts string +// Mounted determines if a specified mountpoint has been mounted. +func Mounted(mountpoint string) (bool, error) { + mountpoint, err := fileutils.ReadSymlinkedPath(mountpoint) + if err != nil { + return false, err + } + return mountinfo.Mounted(mountpoint) } diff --git a/vendor/github.com/containers/storage/pkg/mount/mountinfo_linux.go b/vendor/github.com/containers/storage/pkg/mount/mountinfo_linux.go index 19556d06b..cbc0299fb 100644 --- a/vendor/github.com/containers/storage/pkg/mount/mountinfo_linux.go +++ b/vendor/github.com/containers/storage/pkg/mount/mountinfo_linux.go @@ -1,120 +1,5 @@ package mount -import ( - "bufio" - "fmt" - "io" - "os" - "strconv" - "strings" +import "github.com/moby/sys/mountinfo" - "github.com/pkg/errors" -) - -// Parse /proc/self/mountinfo because comparing Dev and ino does not work from -// bind mounts -func parseMountTable() ([]*Info, error) { - f, err := os.Open("/proc/self/mountinfo") - if err != nil { - return nil, err - } - defer f.Close() - - return parseInfoFile(f) -} - -func parseInfoFile(r io.Reader) ([]*Info, error) { - s := bufio.NewScanner(r) - out := []*Info{} - - for s.Scan() { - /* - 36 35 98:0 /mnt1 /mnt2 rw,noatime master:1 - ext3 /dev/root rw,errors=continue - (0)(1)(2) (3) (4) (5) (6) (7) (8) (9) (10) - - (0) mount ID: unique identifier of the mount (may be reused after umount) - (1) parent ID: ID of parent (or of self for the top of the mount tree) - (2) major:minor: value of st_dev for files on filesystem - (3) root: root of the mount within the filesystem - (4) mount point: mount point relative to the process's root - (5) mount options: per mount options - (6) optional fields: zero or more fields of the form "tag[:value]" - (7) separator: marks the end of the optional fields - (8) filesystem type: name of filesystem of the form "type[.subtype]" - (9) mount source: filesystem specific information or "none" - (10) super options: per super block options - */ - text := s.Text() - fields := strings.Split(text, " ") - numFields := len(fields) - if numFields < 10 { - // should be at least 10 fields - return nil, errors.Errorf("Parsing %q failed: not enough fields (%d)", text, numFields) - } - - p := &Info{} - // ignore any number parsing errors, there should not be any - p.ID, _ = strconv.Atoi(fields[0]) - p.Parent, _ = strconv.Atoi(fields[1]) - mm := strings.Split(fields[2], ":") - if len(mm) != 2 { - return nil, fmt.Errorf("Parsing %q failed: unexpected minor:major pair %s", text, mm) - } - p.Major, _ = strconv.Atoi(mm[0]) - p.Minor, _ = strconv.Atoi(mm[1]) - p.Root = fields[3] - p.Mountpoint = fields[4] - p.Opts = fields[5] - - // one or more optional fields, when a separator (-) - i := 6 - for ; i < numFields && fields[i] != "-"; i++ { - switch i { - case 6: - p.Optional = string(fields[6]) - default: - /* NOTE there might be more optional fields before the separator, - such as fields[7] or fields[8], although as of Linux kernel 5.5 - the only known ones are mount propagation flags in fields[6]. - The correct behavior is to ignore any unknown optional fields. - */ - } - } - if i == numFields { - return nil, fmt.Errorf("Parsing %q failed: missing - separator", text) - } - - // There should be 3 fields after the separator... - if i+4 > numFields { - return nil, fmt.Errorf("Parsing %q failed: not enough fields after a - separator", text) - } - // ... but in Linux <= 3.9 mounting a cifs with spaces in a share name - // (like "//serv/My Documents") _may_ end up having a space in the last field - // of mountinfo (like "unc=//serv/My Documents"). Since kernel 3.10-rc1, cifs - // option unc= is ignored, so a space should not appear. In here we ignore - // those "extra" fields caused by extra spaces. - p.Fstype = fields[i+1] - p.Source = fields[i+2] - p.VfsOpts = fields[i+3] - - out = append(out, p) - } - if err := s.Err(); err != nil { - return nil, err - } - - return out, nil -} - -// PidMountInfo collects the mounts for a specific process ID. If the process -// ID is unknown, it is better to use `GetMounts` which will inspect -// "/proc/self/mountinfo" instead. -func PidMountInfo(pid int) ([]*Info, error) { - f, err := os.Open(fmt.Sprintf("/proc/%d/mountinfo", pid)) - if err != nil { - return nil, err - } - defer f.Close() - - return parseInfoFile(f) -} +var PidMountInfo = mountinfo.PidMountInfo diff --git a/vendor/github.com/containers/storage/pkg/mount/mountinfo_unsupported.go b/vendor/github.com/containers/storage/pkg/mount/mountinfo_unsupported.go deleted file mode 100644 index 6cde1ed77..000000000 --- a/vendor/github.com/containers/storage/pkg/mount/mountinfo_unsupported.go +++ /dev/null @@ -1,12 +0,0 @@ -// +build !linux - -package mount - -import ( - "fmt" - "runtime" -) - -func parseMountTable() ([]*Info, error) { - return nil, fmt.Errorf("mount.parseMountTable is not implemented on %s/%s", runtime.GOOS, runtime.GOARCH) -} diff --git a/vendor/github.com/klauspost/pgzip/.travis.yml b/vendor/github.com/klauspost/pgzip/.travis.yml index 6e9fca0ba..acfec4bb0 100644 --- a/vendor/github.com/klauspost/pgzip/.travis.yml +++ b/vendor/github.com/klauspost/pgzip/.travis.yml @@ -1,19 +1,22 @@ language: go -sudo: false - os: - linux - osx go: - - 1.9.x - - 1.10.x + - 1.13.x + - 1.14.x + - 1.15.x - master -script: - - go test -v -cpu=1,2,4 . - - go test -v -cpu=2 -race -short . +env: + - GO111MODULE=off + +script: + - diff <(gofmt -d .) <(printf "") + - go test -v -cpu=1,2,4 . + - go test -v -cpu=2 -race -short . matrix: allow_failures: diff --git a/vendor/github.com/klauspost/pgzip/gunzip.go b/vendor/github.com/klauspost/pgzip/gunzip.go index 93efec714..d1ae730b2 100644 --- a/vendor/github.com/klauspost/pgzip/gunzip.go +++ b/vendor/github.com/klauspost/pgzip/gunzip.go @@ -331,6 +331,16 @@ func (z *Reader) killReadAhead() error { // Wait for decompressor to be closed and return error, if any. e, ok := <-z.closeErr z.activeRA = false + + for blk := range z.readAhead { + if blk.b != nil { + z.blockPool <- blk.b + } + } + if cap(z.current) > 0 { + z.blockPool <- z.current + z.current = nil + } if !ok { // Channel is closed, so if there was any error it has already been returned. return nil @@ -418,6 +428,7 @@ func (z *Reader) doReadAhead() { case z.readAhead <- read{b: buf, err: err}: case <-closeReader: // Sent on close, we don't care about the next results + z.blockPool <- buf return } if err != nil { diff --git a/vendor/github.com/moby/sys/mountinfo/LICENSE b/vendor/github.com/moby/sys/mountinfo/LICENSE new file mode 100644 index 000000000..d64569567 --- /dev/null +++ b/vendor/github.com/moby/sys/mountinfo/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. Definitions. + + "License" shall mean the terms and conditions for use, reproduction, + and distribution as defined by Sections 1 through 9 of this document. + + "Licensor" shall mean the copyright owner or entity authorized by + the copyright owner that is granting the License. + + "Legal Entity" shall mean the union of the acting entity and all + other entities that control, are controlled by, or are under common + control with that entity. For the purposes of this definition, + "control" means (i) the power, direct or indirect, to cause the + direction or management of such entity, whether by contract or + otherwise, or (ii) ownership of fifty percent (50%) or more of the + outstanding shares, or (iii) beneficial ownership of such entity. + + "You" (or "Your") shall mean an individual or Legal Entity + exercising permissions granted by this License. + + "Source" form shall mean the preferred form for making modifications, + including but not limited to software source code, documentation + source, and configuration files. + + "Object" form shall mean any form resulting from mechanical + transformation or translation of a Source form, including but + not limited to compiled object code, generated documentation, + and conversions to other media types. + + "Work" shall mean the work of authorship, whether in Source or + Object form, made available under the License, as indicated by a + copyright notice that is included in or attached to the work + (an example is provided in the Appendix below). + + "Derivative Works" shall mean any work, whether in Source or Object + form, that is based on (or derived from) the Work and for which the + editorial revisions, annotations, elaborations, or other modifications + represent, as a whole, an original work of authorship. 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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/moby/sys/mountinfo/go.mod b/vendor/github.com/moby/sys/mountinfo/go.mod new file mode 100644 index 000000000..10d9a15a6 --- /dev/null +++ b/vendor/github.com/moby/sys/mountinfo/go.mod @@ -0,0 +1,3 @@ +module github.com/moby/sys/mountinfo + +go 1.14 diff --git a/vendor/github.com/moby/sys/mountinfo/mountinfo.go b/vendor/github.com/moby/sys/mountinfo/mountinfo.go new file mode 100644 index 000000000..136b14167 --- /dev/null +++ b/vendor/github.com/moby/sys/mountinfo/mountinfo.go @@ -0,0 +1,67 @@ +package mountinfo + +import "io" + +// GetMounts retrieves a list of mounts for the current running process, +// with an optional filter applied (use nil for no filter). +func GetMounts(f FilterFunc) ([]*Info, error) { + return parseMountTable(f) +} + +// GetMountsFromReader retrieves a list of mounts from the +// reader provided, with an optional filter applied (use nil +// for no filter). This can be useful in tests or benchmarks +// that provide a fake mountinfo data. +func GetMountsFromReader(reader io.Reader, f FilterFunc) ([]*Info, error) { + return parseInfoFile(reader, f) +} + +// Mounted determines if a specified mountpoint has been mounted. +// On Linux it looks at /proc/self/mountinfo. +func Mounted(mountpoint string) (bool, error) { + entries, err := GetMounts(SingleEntryFilter(mountpoint)) + if err != nil { + return false, err + } + + return len(entries) > 0, nil +} + +// Info reveals information about a particular mounted filesystem. This +// struct is populated from the content in the /proc/<pid>/mountinfo file. +type Info struct { + // ID is a unique identifier of the mount (may be reused after umount). + ID int + + // Parent indicates the ID of the mount parent (or of self for the top of the + // mount tree). + Parent int + + // Major indicates one half of the device ID which identifies the device class. + Major int + + // Minor indicates one half of the device ID which identifies a specific + // instance of device. + Minor int + + // Root of the mount within the filesystem. + Root string + + // Mountpoint indicates the mount point relative to the process's root. + Mountpoint string + + // Opts represents mount-specific options. + Opts string + + // Optional represents optional fields. + Optional string + + // Fstype indicates the type of filesystem, such as EXT3. + Fstype string + + // Source indicates filesystem specific information or "none". + Source string + + // VfsOpts represents per super block options. + VfsOpts string +} diff --git a/vendor/github.com/moby/sys/mountinfo/mountinfo_filters.go b/vendor/github.com/moby/sys/mountinfo/mountinfo_filters.go new file mode 100644 index 000000000..795026465 --- /dev/null +++ b/vendor/github.com/moby/sys/mountinfo/mountinfo_filters.go @@ -0,0 +1,58 @@ +package mountinfo + +import "strings" + +// FilterFunc is a type defining a callback function for GetMount(), +// used to filter out mountinfo entries we're not interested in, +// and/or stop further processing if we found what we wanted. +// +// It takes a pointer to the Info struct (not fully populated, +// currently only Mountpoint, Fstype, Source, and (on Linux) +// VfsOpts are filled in), and returns two booleans: +// +// - skip: true if the entry should be skipped +// - stop: true if parsing should be stopped after the entry +type FilterFunc func(*Info) (skip, stop bool) + +// PrefixFilter discards all entries whose mount points +// do not start with a specific prefix +func PrefixFilter(prefix string) FilterFunc { + return func(m *Info) (bool, bool) { + skip := !strings.HasPrefix(m.Mountpoint, prefix) + return skip, false + } +} + +// SingleEntryFilter looks for a specific entry +func SingleEntryFilter(mp string) FilterFunc { + return func(m *Info) (bool, bool) { + if m.Mountpoint == mp { + return false, true // don't skip, stop now + } + return true, false // skip, keep going + } +} + +// ParentsFilter returns all entries whose mount points +// can be parents of a path specified, discarding others. +// +// For example, given `/var/lib/docker/something`, entries +// like `/var/lib/docker`, `/var` and `/` are returned. +func ParentsFilter(path string) FilterFunc { + return func(m *Info) (bool, bool) { + skip := !strings.HasPrefix(path, m.Mountpoint) + return skip, false + } +} + +// FstypeFilter returns all entries that match provided fstype(s). +func FstypeFilter(fstype ...string) FilterFunc { + return func(m *Info) (bool, bool) { + for _, t := range fstype { + if m.Fstype == t { + return false, false // don't skeep, keep going + } + } + return true, false // skip, keep going + } +} diff --git a/vendor/github.com/containers/storage/pkg/mount/mountinfo_freebsd.go b/vendor/github.com/moby/sys/mountinfo/mountinfo_freebsd.go index 4f32edcd9..a7dbb1b46 100644 --- a/vendor/github.com/containers/storage/pkg/mount/mountinfo_freebsd.go +++ b/vendor/github.com/moby/sys/mountinfo/mountinfo_freebsd.go @@ -1,4 +1,4 @@ -package mount +package mountinfo /* #include <sys/param.h> @@ -13,9 +13,8 @@ import ( "unsafe" ) -// Parse /proc/self/mountinfo because comparing Dev and ino does not work from -// bind mounts. -func parseMountTable() ([]*Info, error) { +// parseMountTable returns information about mounted filesystems +func parseMountTable(filter FilterFunc) ([]*Info, error) { var rawEntries *C.struct_statfs count := int(C.getmntinfo(&rawEntries, C.MNT_WAIT)) @@ -32,10 +31,23 @@ func parseMountTable() ([]*Info, error) { var out []*Info for _, entry := range entries { var mountinfo Info + var skip, stop bool mountinfo.Mountpoint = C.GoString(&entry.f_mntonname[0]) - mountinfo.Source = C.GoString(&entry.f_mntfromname[0]) mountinfo.Fstype = C.GoString(&entry.f_fstypename[0]) + mountinfo.Source = C.GoString(&entry.f_mntfromname[0]) + + if filter != nil { + // filter out entries we're not interested in + skip, stop = filter(&mountinfo) + if skip { + continue + } + } + out = append(out, &mountinfo) + if stop { + break + } } return out, nil } diff --git a/vendor/github.com/moby/sys/mountinfo/mountinfo_linux.go b/vendor/github.com/moby/sys/mountinfo/mountinfo_linux.go new file mode 100644 index 000000000..2d630c8dc --- /dev/null +++ b/vendor/github.com/moby/sys/mountinfo/mountinfo_linux.go @@ -0,0 +1,152 @@ +// +build go1.13 + +package mountinfo + +import ( + "bufio" + "fmt" + "io" + "os" + "strconv" + "strings" +) + +func parseInfoFile(r io.Reader, filter FilterFunc) ([]*Info, error) { + s := bufio.NewScanner(r) + out := []*Info{} + var err error + for s.Scan() { + if err = s.Err(); err != nil { + return nil, err + } + /* + See http://man7.org/linux/man-pages/man5/proc.5.html + + 36 35 98:0 /mnt1 /mnt2 rw,noatime master:1 - ext3 /dev/root rw,errors=continue + (1)(2)(3) (4) (5) (6) (7) (8) (9) (10) (11) + + (1) mount ID: unique identifier of the mount (may be reused after umount) + (2) parent ID: ID of parent (or of self for the top of the mount tree) + (3) major:minor: value of st_dev for files on filesystem + (4) root: root of the mount within the filesystem + (5) mount point: mount point relative to the process's root + (6) mount options: per mount options + (7) optional fields: zero or more fields of the form "tag[:value]" + (8) separator: marks the end of the optional fields + (9) filesystem type: name of filesystem of the form "type[.subtype]" + (10) mount source: filesystem specific information or "none" + (11) super options: per super block options + + In other words, we have: + * 6 mandatory fields (1)..(6) + * 0 or more optional fields (7) + * a separator field (8) + * 3 mandatory fields (9)..(11) + */ + + text := s.Text() + fields := strings.Split(text, " ") + numFields := len(fields) + if numFields < 10 { + // should be at least 10 fields + return nil, fmt.Errorf("Parsing '%s' failed: not enough fields (%d)", text, numFields) + } + + // separator field + sepIdx := numFields - 4 + // In Linux <= 3.9 mounting a cifs with spaces in a share + // name (like "//srv/My Docs") _may_ end up having a space + // in the last field of mountinfo (like "unc=//serv/My Docs"). + // Since kernel 3.10-rc1, cifs option "unc=" is ignored, + // so spaces should not appear. + // + // Check for a separator, and work around the spaces bug + for fields[sepIdx] != "-" { + sepIdx-- + if sepIdx == 5 { + return nil, fmt.Errorf("Parsing '%s' failed: missing - separator", text) + } + } + + p := &Info{} + + // Fill in the fields that a filter might check + p.Mountpoint, err = strconv.Unquote(`"` + fields[4] + `"`) + if err != nil { + return nil, fmt.Errorf("Parsing '%s' failed: unable to unquote mount point field: %w", fields[4], err) + } + p.Fstype = fields[sepIdx+1] + p.Source = fields[sepIdx+2] + p.VfsOpts = fields[sepIdx+3] + + // Run a filter soon so we can skip parsing/adding entries + // the caller is not interested in + var skip, stop bool + if filter != nil { + skip, stop = filter(p) + if skip { + continue + } + } + + // Fill in the rest of the fields + + // ignore any numbers parsing errors, as there should not be any + p.ID, _ = strconv.Atoi(fields[0]) + p.Parent, _ = strconv.Atoi(fields[1]) + mm := strings.Split(fields[2], ":") + if len(mm) != 2 { + return nil, fmt.Errorf("Parsing '%s' failed: unexpected minor:major pair %s", text, mm) + } + p.Major, _ = strconv.Atoi(mm[0]) + p.Minor, _ = strconv.Atoi(mm[1]) + + p.Root, err = strconv.Unquote(`"` + fields[3] + `"`) + if err != nil { + return nil, fmt.Errorf("Parsing '%s' failed: unable to unquote root field: %w", fields[3], err) + } + + p.Opts = fields[5] + + // zero or more optional fields + switch { + case sepIdx == 6: + // zero, do nothing + case sepIdx == 7: + p.Optional = fields[6] + default: + p.Optional = strings.Join(fields[6:sepIdx-1], " ") + } + + out = append(out, p) + if stop { + break + } + } + return out, nil +} + +// Parse /proc/self/mountinfo because comparing Dev and ino does not work from +// bind mounts +func parseMountTable(filter FilterFunc) ([]*Info, error) { + f, err := os.Open("/proc/self/mountinfo") + if err != nil { + return nil, err + } + defer f.Close() + + return parseInfoFile(f, filter) +} + +// PidMountInfo collects the mounts for a specific process ID. If the process +// ID is unknown, it is better to use `GetMounts` which will inspect +// "/proc/self/mountinfo" instead. +func PidMountInfo(pid int) ([]*Info, error) { + f, err := os.Open(fmt.Sprintf("/proc/%d/mountinfo", pid)) + if err != nil { + return nil, err + } + defer f.Close() + + return parseInfoFile(f, nil) +} diff --git a/vendor/github.com/moby/sys/mountinfo/mountinfo_unsupported.go b/vendor/github.com/moby/sys/mountinfo/mountinfo_unsupported.go new file mode 100644 index 000000000..dc1869211 --- /dev/null +++ b/vendor/github.com/moby/sys/mountinfo/mountinfo_unsupported.go @@ -0,0 +1,17 @@ +// +build !windows,!linux,!freebsd freebsd,!cgo + +package mountinfo + +import ( + "fmt" + "io" + "runtime" +) + +func parseMountTable(_ FilterFunc) ([]*Info, error) { + return nil, fmt.Errorf("mount.parseMountTable is not implemented on %s/%s", runtime.GOOS, runtime.GOARCH) +} + +func parseInfoFile(_ io.Reader, f FilterFunc) ([]*Info, error) { + return parseMountTable(f) +} diff --git a/vendor/github.com/moby/sys/mountinfo/mountinfo_windows.go b/vendor/github.com/moby/sys/mountinfo/mountinfo_windows.go new file mode 100644 index 000000000..69ffdc52b --- /dev/null +++ b/vendor/github.com/moby/sys/mountinfo/mountinfo_windows.go @@ -0,0 +1,12 @@ +package mountinfo + +import "io" + +func parseMountTable(_ FilterFunc) ([]*Info, error) { + // Do NOT return an error! + return nil, nil +} + +func parseInfoFile(_ io.Reader, f FilterFunc) ([]*Info, error) { + return parseMountTable(f) +} |