ext2,ext3,ext4: don't inherit APPEND_FL or IMMUTABLE_FL for new inodes
Theodore Ts'o [Wed, 31 Aug 2011 15:54:51 +0000 (11:54 -0400)]
commit 1cd9f0976aa4606db8d6e3dc3edd0aca8019372a upstream.

This doesn't make much sense, and it exposes a bug in the kernel where
attempts to create a new file in an append-only directory using
O_CREAT will fail (but still leave a zero-length file).  This was
discovered when xfstests #79 was generalized so it could run on all
file systems.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

fs/ext4/ext4.h
include/linux/ext2_fs.h
include/linux/ext3_fs.h

index b7d7bd0..5c38120 100644 (file)
@@ -358,8 +358,7 @@ struct flex_groups {
 
 /* Flags that should be inherited by new inodes from their parent. */
 #define EXT4_FL_INHERITED (EXT4_SECRM_FL | EXT4_UNRM_FL | EXT4_COMPR_FL |\
-                          EXT4_SYNC_FL | EXT4_IMMUTABLE_FL | EXT4_APPEND_FL |\
-                          EXT4_NODUMP_FL | EXT4_NOATIME_FL |\
+                          EXT4_SYNC_FL | EXT4_NODUMP_FL | EXT4_NOATIME_FL |\
                           EXT4_NOCOMPR_FL | EXT4_JOURNAL_DATA_FL |\
                           EXT4_NOTAIL_FL | EXT4_DIRSYNC_FL)
 
index 53792bf..ce1b719 100644 (file)
@@ -197,8 +197,8 @@ struct ext2_group_desc
 
 /* Flags that should be inherited by new inodes from their parent. */
 #define EXT2_FL_INHERITED (EXT2_SECRM_FL | EXT2_UNRM_FL | EXT2_COMPR_FL |\
-                          EXT2_SYNC_FL | EXT2_IMMUTABLE_FL | EXT2_APPEND_FL |\
-                          EXT2_NODUMP_FL | EXT2_NOATIME_FL | EXT2_COMPRBLK_FL|\
+                          EXT2_SYNC_FL | EXT2_NODUMP_FL |\
+                          EXT2_NOATIME_FL | EXT2_COMPRBLK_FL |\
                           EXT2_NOCOMP_FL | EXT2_JOURNAL_DATA_FL |\
                           EXT2_NOTAIL_FL | EXT2_DIRSYNC_FL)
 
index 67a803a..0244611 100644 (file)
@@ -180,8 +180,8 @@ struct ext3_group_desc
 
 /* Flags that should be inherited by new inodes from their parent. */
 #define EXT3_FL_INHERITED (EXT3_SECRM_FL | EXT3_UNRM_FL | EXT3_COMPR_FL |\
-                          EXT3_SYNC_FL | EXT3_IMMUTABLE_FL | EXT3_APPEND_FL |\
-                          EXT3_NODUMP_FL | EXT3_NOATIME_FL | EXT3_COMPRBLK_FL|\
+                          EXT3_SYNC_FL | EXT3_NODUMP_FL |\
+                          EXT3_NOATIME_FL | EXT3_COMPRBLK_FL |\
                           EXT3_NOCOMPR_FL | EXT3_JOURNAL_DATA_FL |\
                           EXT3_NOTAIL_FL | EXT3_DIRSYNC_FL)