containerd/fs/fstest/file_unix.go
Akihiro Suda a3aeb398fe fs/diff: support symlink to abspath with second-precision mtime
Previously, `Changes()` for a symlink to absolute path, with second-precision
mtime of the link itself always resulted in ENOENT.

This is because `compareFileContent()` was called for the link target path, without changing the root path.

Fix moby/buildkit#172

Signed-off-by: Akihiro Suda <suda.akihiro@lab.ntt.co.jp>
2017-11-21 04:38:34 +00:00

30 lines
766 B
Go

// +build !windows
package fstest
import (
"path/filepath"
"time"
"github.com/containerd/continuity/sysx"
"golang.org/x/sys/unix"
)
// SetXAttr sets the xatter for the file
func SetXAttr(name, key, value string) Applier {
return applyFn(func(root string) error {
return sysx.LSetxattr(name, key, []byte(value), 0)
})
}
// Lchtimes changes access and mod time of file without following symlink
func Lchtimes(name string, atime, mtime time.Time) Applier {
return applyFn(func(root string) error {
path := filepath.Join(root, name)
at := unix.NsecToTimespec(atime.UnixNano())
mt := unix.NsecToTimespec(mtime.UnixNano())
utimes := [2]unix.Timespec{at, mt}
return unix.UtimesNanoAt(unix.AT_FDCWD, path, utimes[0:], unix.AT_SYMLINK_NOFOLLOW)
})
}