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-rw-r--r--vendor/github.com/containers/storage/drivers/chown_unix.go30
-rw-r--r--vendor/github.com/containers/storage/drivers/driver_linux.go24
-rw-r--r--vendor/github.com/containers/storage/pkg/idtools/idtools_supported.go17
-rw-r--r--vendor/github.com/containers/storage/pkg/lockfile/lockfile_unix.go60
-rw-r--r--vendor/github.com/containers/storage/pkg/stringid/stringid.go12
-rw-r--r--vendor/github.com/containers/storage/pkg/system/meminfo_unsupported.go7
-rw-r--r--vendor/github.com/containers/storage/store.go15
-rw-r--r--vendor/github.com/containers/storage/userns.go8
-rw-r--r--vendor/modules.txt2
9 files changed, 132 insertions, 43 deletions
diff --git a/vendor/github.com/containers/storage/drivers/chown_unix.go b/vendor/github.com/containers/storage/drivers/chown_unix.go
index 84c5b1bd7..65756d8ec 100644
--- a/vendor/github.com/containers/storage/drivers/chown_unix.go
+++ b/vendor/github.com/containers/storage/drivers/chown_unix.go
@@ -21,12 +21,12 @@ type inode struct {
type platformChowner struct {
mutex sync.Mutex
- inodes map[inode]bool
+ inodes map[inode]string
}
func newLChowner() *platformChowner {
return &platformChowner{
- inodes: make(map[inode]bool),
+ inodes: make(map[inode]string),
}
}
@@ -40,15 +40,33 @@ func (c *platformChowner) LChown(path string, info os.FileInfo, toHost, toContai
Dev: uint64(st.Dev),
Ino: uint64(st.Ino),
}
+
c.mutex.Lock()
- _, found := c.inodes[i]
+
+ oldTarget, found := c.inodes[i]
if !found {
- c.inodes[i] = true
+ c.inodes[i] = path
+ }
+
+ // If we are dealing with a file with multiple links then keep the lock until the file is
+ // chowned to avoid a race where we link to the old version if the file is copied up.
+ if found || st.Nlink > 1 {
+ defer c.mutex.Unlock()
+ } else {
+ c.mutex.Unlock()
}
- c.mutex.Unlock()
if found {
- return nil
+ // If the dev/inode was already chowned then create a link to the old target instead
+ // of chowning it again. This is necessary when the underlying file system breaks
+ // inodes on copy-up (as it is with overlay with index=off) to maintain the original
+ // link and correct file ownership.
+
+ // The target already exists so remove it before creating the link to the new target.
+ if err := os.Remove(path); err != nil {
+ return err
+ }
+ return os.Link(oldTarget, path)
}
// Map an on-disk UID/GID pair from host to container
diff --git a/vendor/github.com/containers/storage/drivers/driver_linux.go b/vendor/github.com/containers/storage/drivers/driver_linux.go
index 0fe3eea7a..7c527d279 100644
--- a/vendor/github.com/containers/storage/drivers/driver_linux.go
+++ b/vendor/github.com/containers/storage/drivers/driver_linux.go
@@ -1,3 +1,4 @@
+//go:build linux
// +build linux
package graphdriver
@@ -162,11 +163,32 @@ func (c *defaultChecker) IsMounted(path string) bool {
return m
}
+// isMountPoint checks that the given path is a mount point
+func isMountPoint(mountPath string) (bool, error) {
+ // it is already the root
+ if mountPath == "/" {
+ return true, nil
+ }
+
+ var s1, s2 unix.Stat_t
+ if err := unix.Stat(mountPath, &s1); err != nil {
+ return true, err
+ }
+ if err := unix.Stat(filepath.Dir(mountPath), &s2); err != nil {
+ return true, err
+ }
+ return s1.Dev != s2.Dev, nil
+}
+
// Mounted checks if the given path is mounted as the fs type
func Mounted(fsType FsMagic, mountPath string) (bool, error) {
var buf unix.Statfs_t
+
if err := unix.Statfs(mountPath, &buf); err != nil {
return false, err
}
- return FsMagic(buf.Type) == fsType, nil
+ if FsMagic(buf.Type) != fsType {
+ return false, nil
+ }
+ return isMountPoint(mountPath)
}
diff --git a/vendor/github.com/containers/storage/pkg/idtools/idtools_supported.go b/vendor/github.com/containers/storage/pkg/idtools/idtools_supported.go
index 6e6e3b22b..c96465369 100644
--- a/vendor/github.com/containers/storage/pkg/idtools/idtools_supported.go
+++ b/vendor/github.com/containers/storage/pkg/idtools/idtools_supported.go
@@ -1,8 +1,10 @@
+//go:build linux && cgo && libsubid
// +build linux,cgo,libsubid
package idtools
import (
+ "os/user"
"unsafe"
"github.com/pkg/errors"
@@ -32,19 +34,34 @@ import "C"
func readSubid(username string, isUser bool) (ranges, error) {
var ret ranges
+ uidstr := ""
+
if username == "ALL" {
return nil, errors.New("username ALL not supported")
}
+ if u, err := user.Lookup(username); err == nil {
+ uidstr = u.Uid
+ }
+
cUsername := C.CString(username)
defer C.free(unsafe.Pointer(cUsername))
+ cuidstr := C.CString(uidstr)
+ defer C.free(unsafe.Pointer(cuidstr))
+
var nRanges C.int
var cRanges *C.struct_subid_range
if isUser {
nRanges = C.subid_get_uid_ranges(cUsername, &cRanges)
+ if nRanges <= 0 {
+ nRanges = C.subid_get_uid_ranges(cuidstr, &cRanges)
+ }
} else {
nRanges = C.subid_get_gid_ranges(cUsername, &cRanges)
+ if nRanges <= 0 {
+ nRanges = C.subid_get_gid_ranges(cuidstr, &cRanges)
+ }
}
if nRanges < 0 {
return nil, errors.New("cannot read subids")
diff --git a/vendor/github.com/containers/storage/pkg/lockfile/lockfile_unix.go b/vendor/github.com/containers/storage/pkg/lockfile/lockfile_unix.go
index fc080acbe..aa843920f 100644
--- a/vendor/github.com/containers/storage/pkg/lockfile/lockfile_unix.go
+++ b/vendor/github.com/containers/storage/pkg/lockfile/lockfile_unix.go
@@ -1,15 +1,19 @@
+//go:build linux || solaris || darwin || freebsd
// +build linux solaris darwin freebsd
package lockfile
import (
+ "bytes"
+ cryptorand "crypto/rand"
+ "encoding/binary"
"fmt"
"os"
"path/filepath"
"sync"
+ "sync/atomic"
"time"
- "github.com/containers/storage/pkg/stringid"
"github.com/containers/storage/pkg/system"
"github.com/pkg/errors"
"golang.org/x/sys/unix"
@@ -23,13 +27,44 @@ type lockfile struct {
counter int64
file string
fd uintptr
- lw string
+ lw []byte // "last writer"-unique value valid as of the last .Touch() or .Modified(), generated by newLastWriterID()
locktype int16
locked bool
ro bool
recursive bool
}
+const lastWriterIDSize = 64 // This must be the same as len(stringid.GenerateRandomID)
+var lastWriterIDCounter uint64 // Private state for newLastWriterID
+
+// newLastWriterID returns a new "last writer" ID.
+// The value must be different on every call, and also differ from values
+// generated by other processes.
+func newLastWriterID() []byte {
+ // The ID is (PID, time, per-process counter, random)
+ // PID + time represents both a unique process across reboots,
+ // and a specific time within the process; the per-process counter
+ // is an extra safeguard for in-process concurrency.
+ // The random part disambiguates across process namespaces
+ // (where PID values might collide), serves as a general-purpose
+ // extra safety, _and_ is used to pad the output to lastWriterIDSize,
+ // because other versions of this code exist and they don't work
+ // efficiently if the size of the value changes.
+ pid := os.Getpid()
+ tm := time.Now().UnixNano()
+ counter := atomic.AddUint64(&lastWriterIDCounter, 1)
+
+ res := make([]byte, lastWriterIDSize)
+ binary.LittleEndian.PutUint64(res[0:8], uint64(tm))
+ binary.LittleEndian.PutUint64(res[8:16], counter)
+ binary.LittleEndian.PutUint32(res[16:20], uint32(pid))
+ if n, err := cryptorand.Read(res[20:lastWriterIDSize]); err != nil || n != lastWriterIDSize-20 {
+ panic(err) // This shouldn't happen
+ }
+
+ return res
+}
+
// openLock opens the file at path and returns the corresponding file
// descriptor. Note that the path is opened read-only when ro is set. If ro
// is unset, openLock will open the path read-write and create the file if
@@ -89,7 +124,7 @@ func createLockerForPath(path string, ro bool) (Locker, error) {
stateMutex: &sync.Mutex{},
rwMutex: &sync.RWMutex{},
file: path,
- lw: stringid.GenerateRandomID(),
+ lw: newLastWriterID(),
locktype: int16(locktype),
locked: false,
ro: ro}, nil
@@ -212,13 +247,12 @@ func (l *lockfile) Touch() error {
panic("attempted to update last-writer in lockfile without the write lock")
}
defer l.stateMutex.Unlock()
- l.lw = stringid.GenerateRandomID()
- id := []byte(l.lw)
- n, err := unix.Pwrite(int(l.fd), id, 0)
+ l.lw = newLastWriterID()
+ n, err := unix.Pwrite(int(l.fd), l.lw, 0)
if err != nil {
return err
}
- if n != len(id) {
+ if n != len(l.lw) {
return unix.ENOSPC
}
return nil
@@ -228,21 +262,21 @@ func (l *lockfile) Touch() error {
// was loaded.
func (l *lockfile) Modified() (bool, error) {
l.stateMutex.Lock()
- id := []byte(l.lw)
if !l.locked {
panic("attempted to check last-writer in lockfile without locking it first")
}
defer l.stateMutex.Unlock()
- n, err := unix.Pread(int(l.fd), id, 0)
+ currentLW := make([]byte, len(l.lw))
+ n, err := unix.Pread(int(l.fd), currentLW, 0)
if err != nil {
return true, err
}
- if n != len(id) {
+ if n != len(l.lw) {
return true, nil
}
- lw := l.lw
- l.lw = string(id)
- return l.lw != lw, nil
+ oldLW := l.lw
+ l.lw = currentLW
+ return !bytes.Equal(currentLW, oldLW), nil
}
// IsReadWriteLock indicates if the lock file is a read-write lock.
diff --git a/vendor/github.com/containers/storage/pkg/stringid/stringid.go b/vendor/github.com/containers/storage/pkg/stringid/stringid.go
index a0c7c42a0..4c434f0e5 100644
--- a/vendor/github.com/containers/storage/pkg/stringid/stringid.go
+++ b/vendor/github.com/containers/storage/pkg/stringid/stringid.go
@@ -12,6 +12,7 @@ import (
"regexp"
"strconv"
"strings"
+ "sync"
"time"
)
@@ -20,6 +21,9 @@ const shortLen = 12
var (
validShortID = regexp.MustCompile("^[a-f0-9]{12}$")
validHex = regexp.MustCompile(`^[a-f0-9]{64}$`)
+
+ rngLock sync.Mutex
+ rng *rand.Rand // A RNG with seeding properties we control. It can only be accessed with randLock held.
)
// IsShortID determines if an arbitrary string *looks like* a short ID.
@@ -67,7 +71,9 @@ func GenerateRandomID() string {
// secure sources of random.
// It helps you to save entropy.
func GenerateNonCryptoID() string {
- return generateID(readerFunc(rand.Read))
+ rngLock.Lock()
+ defer rngLock.Unlock()
+ return generateID(readerFunc(rng.Read))
}
// ValidateID checks whether an ID string is a valid image ID.
@@ -79,7 +85,7 @@ func ValidateID(id string) error {
}
func init() {
- // safely set the seed globally so we generate random ids. Tries to use a
+ // Initialize a private RNG so we generate random ids. Tries to use a
// crypto seed before falling back to time.
var seed int64
if cryptoseed, err := cryptorand.Int(cryptorand.Reader, big.NewInt(math.MaxInt64)); err != nil {
@@ -89,7 +95,7 @@ func init() {
seed = cryptoseed.Int64()
}
- rand.Seed(seed)
+ rng = rand.New(rand.NewSource(seed))
}
type readerFunc func(p []byte) (int, error)
diff --git a/vendor/github.com/containers/storage/pkg/system/meminfo_unsupported.go b/vendor/github.com/containers/storage/pkg/system/meminfo_unsupported.go
index 8d14fe9f8..0f9feb1d2 100644
--- a/vendor/github.com/containers/storage/pkg/system/meminfo_unsupported.go
+++ b/vendor/github.com/containers/storage/pkg/system/meminfo_unsupported.go
@@ -1,5 +1,8 @@
-//go:build !linux && !windows && !solaris && !freebsd
-// +build !linux,!windows,!solaris,!freebsd
+//go:build !linux && !windows && !solaris && !(freebsd && cgo)
+// +build !linux
+// +build !windows
+// +build !solaris
+// +build !freebsd !cgo
package system
diff --git a/vendor/github.com/containers/storage/store.go b/vendor/github.com/containers/storage/store.go
index 6bc104f19..4b074eea2 100644
--- a/vendor/github.com/containers/storage/store.go
+++ b/vendor/github.com/containers/storage/store.go
@@ -21,7 +21,6 @@ import (
"github.com/containers/storage/pkg/idtools"
"github.com/containers/storage/pkg/ioutils"
"github.com/containers/storage/pkg/parsers"
- "github.com/containers/storage/pkg/stringid"
"github.com/containers/storage/pkg/stringutils"
"github.com/containers/storage/pkg/system"
"github.com/containers/storage/types"
@@ -1016,9 +1015,6 @@ func (s *store) PutLayer(id, parent string, names []string, mountLabel string, w
if err := rcstore.ReloadIfChanged(); err != nil {
return nil, -1, err
}
- if id == "" {
- id = stringid.GenerateRandomID()
- }
if options == nil {
options = &LayerOptions{}
}
@@ -1097,10 +1093,6 @@ func (s *store) CreateLayer(id, parent string, names []string, mountLabel string
}
func (s *store) CreateImage(id string, names []string, layer, metadata string, options *ImageOptions) (*Image, error) {
- if id == "" {
- id = stringid.GenerateRandomID()
- }
-
if layer != "" {
lstore, err := s.LayerStore()
if err != nil {
@@ -1279,9 +1271,6 @@ func (s *store) CreateContainer(id string, names []string, image, layer, metadat
if err != nil {
return nil, err
}
- if id == "" {
- id = stringid.GenerateRandomID()
- }
var imageTopLayer *Layer
imageID := ""
@@ -1337,14 +1326,14 @@ func (s *store) CreateContainer(id string, names []string, image, layer, metadat
}
}
if cimage == nil {
- return nil, errors.Wrapf(ErrImageUnknown, "error locating image with ID %q", id)
+ return nil, errors.Wrapf(ErrImageUnknown, "error locating image with ID %q", image)
}
imageID = cimage.ID
}
if options.AutoUserNs {
var err error
- options.UIDMap, options.GIDMap, err = s.getAutoUserNS(id, &options.AutoUserNsOpts, cimage)
+ options.UIDMap, options.GIDMap, err = s.getAutoUserNS(&options.AutoUserNsOpts, cimage)
if err != nil {
return nil, err
}
diff --git a/vendor/github.com/containers/storage/userns.go b/vendor/github.com/containers/storage/userns.go
index 523c92dc8..13ebd4021 100644
--- a/vendor/github.com/containers/storage/userns.go
+++ b/vendor/github.com/containers/storage/userns.go
@@ -124,7 +124,7 @@ func parseMountedFiles(containerMount, passwdFile, groupFile string) uint32 {
// getMaxSizeFromImage returns the maximum ID used by the specified image.
// The layer stores must be already locked.
-func (s *store) getMaxSizeFromImage(id string, image *Image, passwdFile, groupFile string) (uint32, error) {
+func (s *store) getMaxSizeFromImage(image *Image, passwdFile, groupFile string) (uint32, error) {
lstore, err := s.LayerStore()
if err != nil {
return 0, err
@@ -183,7 +183,7 @@ outer:
// We need to create a temporary layer so we can mount it and lookup the
// maximum IDs used.
- clayer, err := rlstore.Create(id, topLayer, nil, "", nil, layerOptions, false)
+ clayer, err := rlstore.Create("", topLayer, nil, "", nil, layerOptions, false)
if err != nil {
return 0, err
}
@@ -211,7 +211,7 @@ outer:
}
// getAutoUserNS creates an automatic user namespace
-func (s *store) getAutoUserNS(id string, options *types.AutoUserNsOptions, image *Image) ([]idtools.IDMap, []idtools.IDMap, error) {
+func (s *store) getAutoUserNS(options *types.AutoUserNsOptions, image *Image) ([]idtools.IDMap, []idtools.IDMap, error) {
requestedSize := uint32(0)
initialSize := uint32(1)
if options.Size > 0 {
@@ -250,7 +250,7 @@ func (s *store) getAutoUserNS(id string, options *types.AutoUserNsOptions, image
size = s.autoNsMinSize
}
if image != nil {
- sizeFromImage, err := s.getMaxSizeFromImage(id, image, options.PasswdFile, options.GroupFile)
+ sizeFromImage, err := s.getMaxSizeFromImage(image, options.PasswdFile, options.GroupFile)
if err != nil {
return nil, nil, err
}
diff --git a/vendor/modules.txt b/vendor/modules.txt
index ea07e788b..199274680 100644
--- a/vendor/modules.txt
+++ b/vendor/modules.txt
@@ -239,7 +239,7 @@ 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 v1.41.1-0.20220607143333-8951d0153bf6
+# github.com/containers/storage v1.41.1-0.20220616120034-7df64288ef35
## explicit
github.com/containers/storage
github.com/containers/storage/drivers