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Message-ID: <20080314133241.GD7412@mit.edu>
Date: Fri, 14 Mar 2008 09:32:41 -0400
From: Theodore Tso <tytso@....EDU>
To: Matthias Koenig <mkoenig@...e.de>
Cc: Eric Sandeen <sandeen@...hat.com>,
ext4 development <linux-ext4@...r.kernel.org>
Subject: Re: [PATCH] e2fsprogs- fix ext2fs_swap_inode_full attr test on BE
boxes
On Fri, Mar 14, 2008 at 02:09:06PM +0100, Matthias Koenig wrote:
> (also the git tag for the 1.40.8 release seems to be missing).
Oops, forgot to do a "git push --tags" again. Fixed.
> Eric Sandeen <sandeen@...hat.com> writes:
>
> > After the fix for resize2fs's inode mover losing in-inode
> > extended attributes, the regression test I wrote caught
> > that the attrs were still getting lost on powerpc.
> >
> > Looks like the problem is that ext2fs_swap_inode_full()
> > isn't paying attention to whether or not the EA magic is
> > in hostorder, so it's not recognized (and not swapped)
> > on BE machines. Patch below seems to fix it.
>
> This patch seems to be missing in the current e2fsprogs 1.40.8 release
> (though announced in the release notes that this issue should be fixed
> on BE machines).
> Check r_inline_xattr still fails on ppc and s390 architectures without
> this patch. It builds fine with this patch applied.
This patch is in the repo, which I thought superceded the one which
Eric sent. (The authorship is wrong; and that was my fault for not
including '--author="Eric Sandeen <sandeen@...hat.com>"' on the commit
command-line. I've already apologized to Eric privately; now I'm
apologizing publically. :-)
But looking at it again, I believe I misunderstood, and the two
patches are attacking quite separate problems. OK, i'll get this one
in as well in the next go-around.
- Ted
commit edfd9b0a9fe7b90f56da981ca26d5233cc3749d6
Author: Theodore Ts'o <tytso@....edu>
Date: Sat Mar 8 20:20:40 2008 -0500
resize2fs: Fix resizing filesystems with large inodes
Use ext2fs_get_next_inode_full() in resize2fs and clean up large inode
handling; previous attempt was not properly handling all cases, and
was incorrectly setting i_extra_isize. This caused some extended
attributes to get removed or randomly assigned to other inodes as a
result of the resize, which can be unfortunate on systems using
SELinux.
The previous commit didn't fix things completely on big-endian systems
like PowerPC.
Addresses-Red-Hat-Bugzilla: #434893
Signed-off-by: Eric Sandeen <sandeen@...hat.com>
Signed-off-by: "Theodore Ts'o" <tytso@....edu>
diff --git a/resize/resize2fs.c b/resize/resize2fs.c
index dd26089..6dec3eb 100644
--- a/resize/resize2fs.c
+++ b/resize/resize2fs.c
@@ -1109,8 +1109,7 @@ static errcode_t inode_scan_and_fix(ext2_resize_t rfs)
{
struct process_block_struct pb;
ext2_ino_t ino, new_inode;
- struct ext2_inode inode, *buf = NULL;
- struct ext2_inode_large *large_inode;
+ struct ext2_inode *inode = NULL;
ext2_inode_scan scan = NULL;
errcode_t retval;
int group;
@@ -1154,12 +1153,12 @@ static errcode_t inode_scan_and_fix(ext2_resize_t rfs)
}
ext2fs_set_inode_callback(scan, progress_callback, (void *) rfs);
pb.rfs = rfs;
- pb.inode = &inode;
+ pb.inode = inode;
pb.error = 0;
new_inode = EXT2_FIRST_INODE(rfs->new_fs->super);
inode_size = EXT2_INODE_SIZE(rfs->new_fs->super);
- buf = malloc(inode_size);
- if (!buf) {
+ inode = malloc(inode_size);
+ if (!inode) {
retval = ENOMEM;
goto errout;
}
@@ -1168,29 +1167,29 @@ static errcode_t inode_scan_and_fix(ext2_resize_t rfs)
* elsewhere in the inode table
*/
while (1) {
- retval = ext2fs_get_next_inode(scan, &ino, &inode);
+ retval = ext2fs_get_next_inode_full(scan, &ino, inode, inode_size);
if (retval) goto errout;
if (!ino)
break;
- if (inode.i_links_count == 0 && ino != EXT2_RESIZE_INO)
+ if (inode->i_links_count == 0 && ino != EXT2_RESIZE_INO)
continue; /* inode not in use */
- pb.is_dir = LINUX_S_ISDIR(inode.i_mode);
+ pb.is_dir = LINUX_S_ISDIR(inode->i_mode);
pb.changed = 0;
- if (inode.i_file_acl && rfs->bmap) {
+ if (inode->i_file_acl && rfs->bmap) {
new_block = ext2fs_extent_translate(rfs->bmap,
- inode.i_file_acl);
+ inode->i_file_acl);
if (new_block) {
- inode.i_file_acl = new_block;
- retval = ext2fs_write_inode(rfs->old_fs,
- ino, &inode);
+ inode->i_file_acl = new_block;
+ retval = ext2fs_write_inode_full(rfs->old_fs,
+ ino, inode, inode_size);
if (retval) goto errout;
}
}
- if (ext2fs_inode_has_valid_blocks(&inode) &&
+ if (ext2fs_inode_has_valid_blocks(inode) &&
(rfs->bmap || pb.is_dir)) {
pb.ino = ino;
retval = ext2fs_block_iterate2(rfs->old_fs,
@@ -1221,23 +1220,19 @@ static errcode_t inode_scan_and_fix(ext2_resize_t rfs)
}
}
ext2fs_mark_inode_bitmap(rfs->new_fs->inode_map, new_inode);
- memcpy(buf, &inode, sizeof(struct ext2_inode));
- large_inode = (struct ext2_inode_large *)buf;
- large_inode->i_extra_isize = sizeof(struct ext2_inode_large) -
- EXT2_GOOD_OLD_INODE_SIZE;
if (pb.changed) {
/* Get the new version of the inode */
retval = ext2fs_read_inode_full(rfs->old_fs, ino,
- buf, inode_size);
+ inode, inode_size);
if (retval) goto errout;
}
- inode.i_ctime = time(0);
+ inode->i_ctime = time(0);
retval = ext2fs_write_inode_full(rfs->old_fs, new_inode,
- buf, inode_size);
+ inode, inode_size);
if (retval) goto errout;
group = (new_inode-1) / EXT2_INODES_PER_GROUP(rfs->new_fs->super);
- if (LINUX_S_ISDIR(inode.i_mode))
+ if (LINUX_S_ISDIR(inode->i_mode))
rfs->new_fs->group_desc[group].bg_used_dirs_count++;
#ifdef RESIZE2FS_DEBUG
@@ -1263,8 +1258,8 @@ errout:
ext2fs_close_inode_scan(scan);
if (block_buf)
ext2fs_free_mem(&block_buf);
- if (buf)
- free(buf);
+ if (inode)
+ free(inode);
return retval;
}
--
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