[SMB3] Fix oops when creating symlinks on smb3

We were not checking for symlink support properly for SMB2/SMB3 mounts so could oops when mounted with mfsymlinks when try to create symlink when mfsymlinks on smb2/smb3 mounts Signed-off-by: Steve French <[email protected]> Cc: <[email protected]> # 3.14+ CC: Sachin Prabhu <[email protected]>
rtvt123 · Sep 15, 2014 · da80659 · da80659
1 parent 2ae83bf
commit da80659
Showing 1 changed file with 6 additions and 2 deletions.
diff --git a/fs/cifs/link.c b/fs/cifs/link.c
@@ -213,8 +213,12 @@ create_mf_symlink(const unsigned int xid, struct cifs_tcon *tcon,
 	if (rc)
 		goto out;
 
-	rc = tcon->ses->server->ops->create_mf_symlink(xid, tcon, cifs_sb,
-					fromName, buf, &bytes_written);
+	if (tcon->ses->server->ops->create_mf_symlink)
+		rc = tcon->ses->server->ops->create_mf_symlink(xid, tcon,
+					cifs_sb, fromName, buf, &bytes_written);
+	else
+		rc = -EOPNOTSUPP;
+
 	if (rc)
 		goto out;