CIFS: Fix wrong filename length for SMB2

The existing code uses the old MAX_NAME constant. This causes
XFS test generic/013 to fail. Fix it by replacing MAX_NAME with
PATH_MAX that SMB1 uses. Also remove an unused MAX_NAME constant
definition.

Cc: <stable@vger.kernel.org> # v3.7+
Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org>
Signed-off-by: Steve French <smfrench@gmail.com>

diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
index dfc731b..25b8392 100644 (file)
--- a/fs/cifs/cifsglob.h
+++ b/fs/cifs/cifsglob.h
@@ -70,11 +70,6 @@
 #define SERVER_NAME_LENGTH 40
 #define SERVER_NAME_LEN_WITH_NULL     (SERVER_NAME_LENGTH + 1)
 
-/* used to define string lengths for reversing unicode strings */
-/*         (256+1)*2 = 514                                     */
-/*           (max path length + 1 for null) * 2 for unicode    */
-#define MAX_NAME 514
-
 /* SMB echo "timeout" -- FIXME: tunable? */
 #define SMB_ECHO_INTERVAL (60 * HZ)
 

diff --git a/fs/cifs/smb2file.c b/fs/cifs/smb2file.c
index 3f17b45..4599294 100644 (file)
--- a/fs/cifs/smb2file.c
+++ b/fs/cifs/smb2file.c
@@ -50,7 +50,7 @@ smb2_open_file(const unsigned int xid, struct cifs_open_parms *oparms,
                goto out;
        }
 
-       smb2_data = kzalloc(sizeof(struct smb2_file_all_info) + MAX_NAME * 2,
+       smb2_data = kzalloc(sizeof(struct smb2_file_all_info) + PATH_MAX * 2,
                            GFP_KERNEL);
        if (smb2_data == NULL) {
                rc = -ENOMEM;

diff --git a/fs/cifs/smb2inode.c b/fs/cifs/smb2inode.c
index 0150182..899bbc8 100644 (file)
--- a/fs/cifs/smb2inode.c
+++ b/fs/cifs/smb2inode.c
@@ -131,7 +131,7 @@ smb2_query_path_info(const unsigned int xid, struct cifs_tcon *tcon,
        *adjust_tz = false;
        *symlink = false;
 
-       smb2_data = kzalloc(sizeof(struct smb2_file_all_info) + MAX_NAME * 2,
+       smb2_data = kzalloc(sizeof(struct smb2_file_all_info) + PATH_MAX * 2,
                            GFP_KERNEL);
        if (smb2_data == NULL)
                return -ENOMEM;

diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c
index 4e4eecd..f522193 100644 (file)
--- a/fs/cifs/smb2ops.c
+++ b/fs/cifs/smb2ops.c
@@ -389,7 +389,7 @@ smb2_query_file_info(const unsigned int xid, struct cifs_tcon *tcon,
        int rc;
        struct smb2_file_all_info *smb2_data;
 
-       smb2_data = kzalloc(sizeof(struct smb2_file_all_info) + MAX_NAME * 2,
+       smb2_data = kzalloc(sizeof(struct smb2_file_all_info) + PATH_MAX * 2,
                            GFP_KERNEL);
        if (smb2_data == NULL)
                return -ENOMEM;

diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c
index cb39c51..74b3a66 100644 (file)
--- a/fs/cifs/smb2pdu.c
+++ b/fs/cifs/smb2pdu.c
@@ -1532,7 +1532,7 @@ SMB2_query_info(const unsigned int xid, struct cifs_tcon *tcon,
 {
        return query_info(xid, tcon, persistent_fid, volatile_fid,
                          FILE_ALL_INFORMATION,
-                         sizeof(struct smb2_file_all_info) + MAX_NAME * 2,
+                         sizeof(struct smb2_file_all_info) + PATH_MAX * 2,
                          sizeof(struct smb2_file_all_info), data);
 }