[CIFS] fixed compatibility issue with samba refferal request

treeName part is canonicalized to '/' path separator

Signed-off-by: Igor Mammedov <niallain@gmail.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>

1 files changed, 14 insertions, 11 deletions

diff --git a/fs/cifs/cifs_dfs_ref.c b/fs/cifs/cifs_dfs_ref.c
index 95024c066d89..f6fdecf6598c 100644
--- a/fs/cifs/cifs_dfs_ref.c
+++ b/fs/cifs/cifs_dfs_ref.c
@@ -93,15 +93,11 @@ static char *cifs_get_share_name(const char *node_name)
         /* find sharename end */
         pSep++;
         pSep = memchr(UNC+(pSep-UNC), '\\', len-(pSep-UNC));
-        if (!pSep) {
-                cERROR(1, ("%s:2 cant find share name in node name: %s",
-                        __func__, node_name));
-                kfree(UNC);
-                return NULL;
+        if (pSep) {
+                /* trim path up to sharename end
+                 * now we have share name in UNC */
+                *pSep = 0;
         }
-        /* trim path up to sharename end
-         *          * now we have share name in UNC */
-        *pSep = 0;
 
         return UNC;
 }
@@ -188,7 +184,7 @@ static char *compose_mount_options(const char *sb_mountdata,
                 tkn_e = strchr(tkn_e+1, '\\');
                 if (tkn_e) {
                         strcat(mountdata, ",prefixpath=");
-                        strcat(mountdata, tkn_e);
+                        strcat(mountdata, tkn_e+1);
                 }
         }
 
@@ -244,7 +240,8 @@ static char *build_full_dfs_path_from_dentry(struct dentry *dentry)
                 return NULL;
 
         if (cifs_sb->tcon->Flags & SMB_SHARE_IS_IN_DFS) {
-                /* we should use full path name to correct working with DFS */
+                int i;
+                /* we should use full path name for correct working with DFS */
                 l_max_len = strnlen(cifs_sb->tcon->treeName, MAX_TREE_SIZE+1) +
                                         strnlen(search_path, MAX_PATHCONF) + 1;
                 tmp_path = kmalloc(l_max_len, GFP_KERNEL);
@@ -253,8 +250,14 @@ static char *build_full_dfs_path_from_dentry(struct dentry *dentry)
                         return NULL;
                 }
                 strncpy(tmp_path, cifs_sb->tcon->treeName, l_max_len);
-                strcat(tmp_path, search_path);
                 tmp_path[l_max_len-1] = 0;
+                if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS)
+                        for (i = 0; i < l_max_len; i++) {
+                                if (tmp_path[i] == '\\')
+                                        tmp_path[i] = '/';
+                        }
+                strncat(tmp_path, search_path, l_max_len - strlen(tmp_path));
+
                 full_path = tmp_path;
                 kfree(search_path);
         } else {