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authorSachin Prabhu <sprabhu@redhat.com>2016-12-15 10:01:19 +0300
committerSteve French <smfrench@gmail.com>2016-12-15 10:42:54 +0300
commit374402a2a1dfbbee8ab1a5a32ec4887bf8c15d52 (patch)
treee886fc71908f5e2ac4c97b68e30e7b364417cfb2 /fs/cifs/cifsproto.h
parent395664439c4945e4827543e3ca80f7b74e1bf733 (diff)
downloadlinux-374402a2a1dfbbee8ab1a5a32ec4887bf8c15d52.tar.xz
cifs_get_root shouldn't use path with tree name
When a server returns the optional flag SMB_SHARE_IS_IN_DFS in response to a tree connect, cifs_build_path_to_root() will return a pathname which includes the hostname. This causes problems with cifs_get_root() which separates each component and does a lookup for each component of the path which in this case will incorrectly include looking up the hostname component as a path component. We encountered a problem with dfs shares hosted by a Netapp. When connecting to nodes pointed to by the DFS share. The tree connect for these nodes return SMB_SHARE_IS_IN_DFS resulting failures in lookup in cifs_get_root(). RH bz: 1373153 The patch was tested against a Netapp simulator and by a user using an actual Netapp server. Signed-off-by: Sachin Prabhu <sprabhu@redhat.com> Reported-by: Pierguido Lambri <plambri@redhat.com> Reviewed-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <smfrench@gmail.com>
Diffstat (limited to 'fs/cifs/cifsproto.h')
-rw-r--r--fs/cifs/cifsproto.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/cifs/cifsproto.h b/fs/cifs/cifsproto.h
index cd8025a249bb..c7b3c841e660 100644
--- a/fs/cifs/cifsproto.h
+++ b/fs/cifs/cifsproto.h
@@ -63,7 +63,8 @@ extern void exit_cifs_spnego(void);
extern char *build_path_from_dentry(struct dentry *);
extern char *cifs_build_path_to_root(struct smb_vol *vol,
struct cifs_sb_info *cifs_sb,
- struct cifs_tcon *tcon);
+ struct cifs_tcon *tcon,
+ int add_treename);
extern char *build_wildcard_path_from_dentry(struct dentry *direntry);
extern char *cifs_compose_mount_options(const char *sb_mountdata,
const char *fullpath, const struct dfs_info3_param *ref,