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| author | Dean Deng <deandeng@google.com> | 2020-06-19 14:39:31 -0700 |
|---|---|---|
| committer | gVisor bot <gvisor-bot@google.com> | 2020-06-19 14:41:14 -0700 |
| commit | ad9f4691741cfada0ae09f73053d6195d43465ae (patch) | |
| tree | 6591214168e98f41fc1b8e76004fce0b96c41cd6 /pkg/sentry/syscalls/linux | |
| parent | f0feada89c3a2c01870e5ab6d18caae8b6a8848a (diff) | |
Fix bugs in vfs2 to make symlink tests pass.
- Return ENOENT if target path is empty.
- Make sure open(2) with O_CREAT|O_EXCL returns EEXIST when necessary.
- Correctly update atime in tmpfs using touchATime().
Updates #2923.
PiperOrigin-RevId: 317382655
Diffstat (limited to 'pkg/sentry/syscalls/linux')
| -rw-r--r-- | pkg/sentry/syscalls/linux/vfs2/filesystem.go | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/pkg/sentry/syscalls/linux/vfs2/filesystem.go b/pkg/sentry/syscalls/linux/vfs2/filesystem.go index 46d3e189c..5dac77e4d 100644 --- a/pkg/sentry/syscalls/linux/vfs2/filesystem.go +++ b/pkg/sentry/syscalls/linux/vfs2/filesystem.go @@ -313,6 +313,9 @@ func symlinkat(t *kernel.Task, targetAddr usermem.Addr, newdirfd int32, linkpath if err != nil { return err } + if len(target) == 0 { + return syserror.ENOENT + } linkpath, err := copyInPath(t, linkpathAddr) if err != nil { return err |