| Message ID | 1372697399-21361-8-git-send-email-piastry@etersoft.ru (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
diff --git a/fs/locks.c b/fs/locks.c index 60f3ce8..86f3a93 100644 --- a/fs/locks.c +++ b/fs/locks.c @@ -1758,6 +1758,12 @@ SYSCALL_DEFINE2(flock, unsigned int, fd, unsigned int, cmd) goto out; } + /* Disable LOCK_MAND support for FS mounted with MS_SHARELOCK */ + if ((cmd & LOCK_MAND) && IS_SHARELOCK(f.file->f_path.dentry->d_inode)) { + error = -EPERM; + goto out; + } + can_sleep = !(cmd & LOCK_NB); cmd &= ~LOCK_NB; unlock = (cmd == LOCK_UN);
Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru> --- fs/locks.c | 6 ++++++ 1 file changed, 6 insertions(+)