diff options
| author | Pavel Shilovsky <piastry@etersoft.ru> | 2011-05-26 06:02:00 +0000 |
|---|---|---|
| committer | Steve French <sfrench@us.ibm.com> | 2011-05-27 03:57:16 +0000 |
| commit | d4ffff1fa9695c5b5c0bf337e208d8833b88ff2d (patch) | |
| tree | acd4b6cfa7962a1cee7e9c81f11bd9ccb0d3ff24 /fs/cifs/cifsfs.c | |
| parent | 25c7f41e9234f60af30e086278f1de7974f8816f (diff) | |
| download | lwn-d4ffff1fa9695c5b5c0bf337e208d8833b88ff2d.tar.gz lwn-d4ffff1fa9695c5b5c0bf337e208d8833b88ff2d.zip | |
CIFS: Add rwpidforward mount option
Add rwpidforward mount option that switches on a mode when we forward
pid of a process who opened a file to any read and write operation.
This can prevent applications like WINE from failing on read or write
operation on a previously locked file region from the same netfd from
another process if we use mandatory brlock style.
It is actual for WINE because during a run of WINE program two processes
work on the same netfd - share the same file struct between several VFS
fds:
1) WINE-server does open and lock;
2) WINE-application does read and write.
Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru>
Signed-off-by: Steve French <sfrench@us.ibm.com>
Diffstat (limited to 'fs/cifs/cifsfs.c')
| -rw-r--r-- | fs/cifs/cifsfs.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c index 360fe2ec2a19..26981bf2cf3f 100644 --- a/fs/cifs/cifsfs.c +++ b/fs/cifs/cifsfs.c @@ -415,12 +415,20 @@ cifs_show_options(struct seq_file *s, struct vfsmount *m) seq_printf(s, ",nocase"); if (tcon->retry) seq_printf(s, ",hard"); + if (tcon->unix_ext) + seq_printf(s, ",unix"); + else + seq_printf(s, ",nounix"); if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) seq_printf(s, ",posixpaths"); if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) seq_printf(s, ",setuids"); if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) seq_printf(s, ",serverino"); + if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_RWPIDFORWARD) + seq_printf(s, ",rwpidforward"); + if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NOPOSIXBRL) + seq_printf(s, ",forcemand"); if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DIRECT_IO) seq_printf(s, ",directio"); if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_XATTR) |