diff options
| author | Dean Deng <deandeng@google.com> | 2021-01-20 16:51:59 -0800 |
|---|---|---|
| committer | gVisor bot <gvisor-bot@google.com> | 2021-01-20 16:55:07 -0800 |
| commit | 55332aca95a55378957f89a10f21d9d1714070a5 (patch) | |
| tree | 409f45199da64097861facecf65db3f5621ce27b /pkg/sentry/syscalls/linux | |
| parent | ca9a45f282a08a88df19c93d5968d720b5153c41 (diff) | |
Move Lock/UnlockPOSIX into LockFD util.
PiperOrigin-RevId: 352904728
Diffstat (limited to 'pkg/sentry/syscalls/linux')
| -rw-r--r-- | pkg/sentry/syscalls/linux/vfs2/fd.go | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/pkg/sentry/syscalls/linux/vfs2/fd.go b/pkg/sentry/syscalls/linux/vfs2/fd.go index 7dd9ef857..9281952cb 100644 --- a/pkg/sentry/syscalls/linux/vfs2/fd.go +++ b/pkg/sentry/syscalls/linux/vfs2/fd.go @@ -305,21 +305,26 @@ func posixLock(t *kernel.Task, args arch.SyscallArguments, file *vfs.FileDescrip blocker = t } + r, err := file.ComputeLockRange(t, uint64(flock.Start), uint64(flock.Len), flock.Whence) + if err != nil { + return err + } + switch flock.Type { case linux.F_RDLCK: if !file.IsReadable() { return syserror.EBADF } - return file.LockPOSIX(t, t.FDTable(), lock.ReadLock, uint64(flock.Start), uint64(flock.Len), flock.Whence, blocker) + return file.LockPOSIX(t, t.FDTable(), lock.ReadLock, r, blocker) case linux.F_WRLCK: if !file.IsWritable() { return syserror.EBADF } - return file.LockPOSIX(t, t.FDTable(), lock.WriteLock, uint64(flock.Start), uint64(flock.Len), flock.Whence, blocker) + return file.LockPOSIX(t, t.FDTable(), lock.WriteLock, r, blocker) case linux.F_UNLCK: - return file.UnlockPOSIX(t, t.FDTable(), uint64(flock.Start), uint64(flock.Len), flock.Whence) + return file.UnlockPOSIX(t, t.FDTable(), r) default: return syserror.EINVAL |