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cifs: Unset CIFS_MOUNT_POSIX_PATHS flag when following dfs mounts

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In a dfs setup where the client transitions from a server which supports
posix paths to a server which doesn't support posix paths, the flag
CIFS_MOUNT_POSIX_PATHS is not reset. This leads to the wrong directory
separator being used causing smb commands to fail.

Consider the following case where a dfs share on a samba server points
to a share on windows smb server.
 # mount -t cifs -o .. //vm140-31/dfsroot/testwin/
 # ls -l /mnt; touch /mnt/a
 total 0
 touch: cannot touch ‘/mnt/a’: No such file or directory

Signed-off-by: Sachin Prabhu <sprabhu@redhat.com>
Acked-by: Jeff Layton <jlayton@samba.org>
Signed-off-by: Steve French <steve.french@primarydata.com>
This commit is contained in:
Sachin Prabhu 2015-06-16 16:36:17 +01:00 committed by Steve French
parent ebb3a9d4ba
commit 1dfd18d057
1 changed files with 2 additions and 0 deletions
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2
fs/cifs/connect.c
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@ -3472,6 +3472,8 @@ cifs_mount(struct cifs_sb_info *cifs_sb, struct smb_vol *volume_info)
else if (ses) else if (ses)
cifs_put_smb_ses(ses); cifs_put_smb_ses(ses);
cifs_sb->mnt_cifs_flags &= ~CIFS_MOUNT_POSIX_PATHS;
free_xid(xid); free_xid(xid);
} }
#endif #endif