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authorSteve French2008-10-16 20:35:21 +0200
committerSteve French2008-10-16 20:35:21 +0200
commit2c1b861539c15491593625920058e06452cd3747 (patch)
tree0ba78f807ff7d3eba8174462f6bde28f8e0dc987 /fs/cifs/connect.c
parentMerge git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6 (diff)
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[CIFS] Add nodfs mount option
Older samba server (eg. 3.0.24 from Debian etch) don't work correctly, if DFS paths are used. Such server claim that they support DFS, but fail to process some requests with DFS paths. Starting with Linux 2.6.26, the cifs clients starts sending DFS paths in such situations, rendering it unuseable with older samba servers. The nodfs mount options forces a share to be used with non DFS paths, even if the server claims, that it supports it. Signed-off-by: Martin Koegler <mkoegler@auto.tuwien.ac.at> Acked-by: Jeff Layton <jlayton@redhat.com> Acked-by: Igor Mammedov <niallain@gmail.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
Diffstat (limited to 'fs/cifs/connect.c')
-rw-r--r--fs/cifs/connect.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index 4c13bcdb92a5..17ca8ce81bb7 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -90,6 +90,7 @@ struct smb_vol {
bool nocase:1; /* request case insensitive filenames */
bool nobrl:1; /* disable sending byte range locks to srv */
bool seal:1; /* request transport encryption on share */
+ bool nodfs:1;
unsigned int rsize;
unsigned int wsize;
unsigned int sockopt;
@@ -1218,6 +1219,8 @@ cifs_parse_mount_options(char *options, const char *devname,
vol->sfu_emul = 1;
} else if (strnicmp(data, "nosfu", 5) == 0) {
vol->sfu_emul = 0;
+ } else if (strnicmp(data, "nodfs", 5) == 0) {
+ vol->nodfs = 1;
} else if (strnicmp(data, "posixpaths", 10) == 0) {
vol->posix_paths = 1;
} else if (strnicmp(data, "noposixpaths", 12) == 0) {
@@ -2197,6 +2200,12 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
volume_info.UNC,
tcon, cifs_sb->local_nls);
cFYI(1, ("CIFS Tcon rc = %d", rc));
+ if (volume_info.nodfs) {
+ tcon->Flags &=
+ ~SMB_SHARE_IS_IN_DFS;
+ cFYI(1, ("DFS disabled (%d)",
+ tcon->Flags));
+ }
}
if (!rc) {
atomic_inc(&pSesInfo->inUse);