diff options
| author | Ayush Ranjan <ayushranjan@google.com> | 2019-07-23 20:34:49 -0700 |
|---|---|---|
| committer | gVisor bot <gvisor-bot@google.com> | 2019-07-23 20:36:04 -0700 |
| commit | 7e38d643334647fb79c7cc8be35745699de264e6 (patch) | |
| tree | f6470d9f953dc7274ee98f1af62736a7493ef68c /pkg/sentry/fs/ext/utils.go | |
| parent | d7bb79b6f177e8c58d47695e0ee1a072475463c4 (diff) | |
ext: Inode creation logic.
PiperOrigin-RevId: 259666476
Diffstat (limited to 'pkg/sentry/fs/ext/utils.go')
| -rw-r--r-- | pkg/sentry/fs/ext/utils.go | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/pkg/sentry/fs/ext/utils.go b/pkg/sentry/fs/ext/utils.go index 71e46b2c4..3472c5fa8 100644 --- a/pkg/sentry/fs/ext/utils.go +++ b/pkg/sentry/fs/ext/utils.go @@ -28,7 +28,7 @@ import ( // All disk reads should use this helper so we avoid reading from stale // previously used offsets. This function forces the offset parameter. // -// Precondition: Must have mutual exclusion on device fd. +// Precondition: Must hold the mutex of the filesystem containing dev. func readFromDisk(dev io.ReadSeeker, abOff int64, v interface{}) error { if _, err := dev.Seek(abOff, io.SeekStart); err != nil { return syserror.EIO @@ -45,7 +45,7 @@ func readFromDisk(dev io.ReadSeeker, abOff int64, v interface{}) error { // device. There are three versions of the superblock. This function identifies // and returns the correct version. // -// Precondition: Must have mutual exclusion on device fd. +// Precondition: Must hold the mutex of the filesystem containing dev. func readSuperBlock(dev io.ReadSeeker) (disklayout.SuperBlock, error) { var sb disklayout.SuperBlock = &disklayout.SuperBlockOld{} if err := readFromDisk(dev, disklayout.SbOffset, sb); err != nil { @@ -87,7 +87,7 @@ func blockGroupsCount(sb disklayout.SuperBlock) uint64 { // readBlockGroups reads the block group descriptor table from block group 0 in // the underlying device. // -// Precondition: Must have mutual exclusion on device fd. +// Precondition: Must hold the mutex of the filesystem containing dev. func readBlockGroups(dev io.ReadSeeker, sb disklayout.SuperBlock) ([]disklayout.BlockGroup, error) { bgCount := blockGroupsCount(sb) bgdSize := uint64(sb.BgDescSize()) |