summaryrefslogtreecommitdiff
path: root/fs/xfs/xfs_attr_list.c
diff options
context:
space:
mode:
Diffstat (limited to 'fs/xfs/xfs_attr_list.c')
-rw-r--r--fs/xfs/xfs_attr_list.c120
1 files changed, 84 insertions, 36 deletions
diff --git a/fs/xfs/xfs_attr_list.c b/fs/xfs/xfs_attr_list.c
index a6819a642cc0..5c947e5ce8b8 100644
--- a/fs/xfs/xfs_attr_list.c
+++ b/fs/xfs/xfs_attr_list.c
@@ -82,7 +82,8 @@ xfs_attr_shortform_list(
(dp->i_af.if_bytes + sf->count * 16) < context->bufsize)) {
for (i = 0, sfe = xfs_attr_sf_firstentry(sf); i < sf->count; i++) {
if (XFS_IS_CORRUPT(context->dp->i_mount,
- !xfs_attr_namecheck(sfe->nameval,
+ !xfs_attr_namecheck(sfe->flags,
+ sfe->nameval,
sfe->namelen))) {
xfs_dirattr_mark_sick(context->dp, XFS_ATTR_FORK);
return -EFSCORRUPTED;
@@ -91,6 +92,7 @@ xfs_attr_shortform_list(
sfe->flags,
sfe->nameval,
(int)sfe->namelen,
+ &sfe->nameval[sfe->namelen],
(int)sfe->valuelen);
/*
* Either search callback finished early or
@@ -122,7 +124,8 @@ xfs_attr_shortform_list(
for (i = 0, sfe = xfs_attr_sf_firstentry(sf); i < sf->count; i++) {
if (unlikely(
((char *)sfe < (char *)sf) ||
- ((char *)sfe >= ((char *)sf + dp->i_af.if_bytes)))) {
+ ((char *)sfe >= ((char *)sf + dp->i_af.if_bytes)) ||
+ !xfs_attr_check_namespace(sfe->flags))) {
XFS_CORRUPTION_ERROR("xfs_attr_shortform_list",
XFS_ERRLEVEL_LOW,
context->dp->i_mount, sfe,
@@ -133,12 +136,16 @@ xfs_attr_shortform_list(
}
sbp->entno = i;
- sbp->hash = xfs_da_hashname(sfe->nameval, sfe->namelen);
sbp->name = sfe->nameval;
sbp->namelen = sfe->namelen;
/* These are bytes, and both on-disk, don't endian-flip */
+ sbp->value = &sfe->nameval[sfe->namelen],
sbp->valuelen = sfe->valuelen;
sbp->flags = sfe->flags;
+ sbp->hash = xfs_attr_hashval(dp->i_mount, sfe->flags,
+ sfe->nameval, sfe->namelen,
+ sfe->nameval + sfe->namelen,
+ sfe->valuelen);
sfe = xfs_attr_sf_nextentry(sfe);
sbp++;
nsbuf++;
@@ -177,7 +184,7 @@ xfs_attr_shortform_list(
cursor->offset = 0;
}
if (XFS_IS_CORRUPT(context->dp->i_mount,
- !xfs_attr_namecheck(sbp->name,
+ !xfs_attr_namecheck(sbp->flags, sbp->name,
sbp->namelen))) {
xfs_dirattr_mark_sick(context->dp, XFS_ATTR_FORK);
error = -EFSCORRUPTED;
@@ -187,6 +194,7 @@ xfs_attr_shortform_list(
sbp->flags,
sbp->name,
sbp->namelen,
+ sbp->value,
sbp->valuelen);
if (context->seen_enough)
break;
@@ -214,6 +222,7 @@ xfs_attr_node_list_lookup(
struct xfs_mount *mp = dp->i_mount;
struct xfs_trans *tp = context->tp;
struct xfs_buf *bp;
+ xfs_failaddr_t fa;
int i;
int error = 0;
unsigned int expected_level = 0;
@@ -238,6 +247,10 @@ xfs_attr_node_list_lookup(
goto out_corruptbuf;
}
+ fa = xfs_da3_node_header_check(bp, dp->i_ino);
+ if (fa)
+ goto out_corruptbuf;
+
xfs_da3_node_hdr_from_disk(mp, &nodehdr, node);
/* Tree taller than we can handle; bail out! */
@@ -273,6 +286,12 @@ xfs_attr_node_list_lookup(
}
}
+ fa = xfs_attr3_leaf_header_check(bp, dp->i_ino);
+ if (fa) {
+ __xfs_buf_mark_corrupt(bp, fa);
+ goto out_releasebuf;
+ }
+
if (expected_level != 0)
goto out_corruptbuf;
@@ -281,6 +300,7 @@ xfs_attr_node_list_lookup(
out_corruptbuf:
xfs_buf_mark_corrupt(bp);
+out_releasebuf:
xfs_trans_brelse(tp, bp);
xfs_dirattr_mark_sick(dp, XFS_ATTR_FORK);
return -EFSCORRUPTED;
@@ -297,6 +317,7 @@ xfs_attr_node_list(
struct xfs_buf *bp;
struct xfs_inode *dp = context->dp;
struct xfs_mount *mp = dp->i_mount;
+ xfs_failaddr_t fa;
int error = 0;
trace_xfs_attr_node_list(context);
@@ -310,46 +331,60 @@ xfs_attr_node_list(
*/
bp = NULL;
if (cursor->blkno > 0) {
+ struct xfs_attr_leaf_entry *entries;
+
error = xfs_da3_node_read(context->tp, dp, cursor->blkno, &bp,
XFS_ATTR_FORK);
if (xfs_metadata_is_sick(error))
xfs_dirattr_mark_sick(dp, XFS_ATTR_FORK);
- if ((error != 0) && (error != -EFSCORRUPTED))
+ if (error != 0 && error != -EFSCORRUPTED)
return error;
- if (bp) {
- struct xfs_attr_leaf_entry *entries;
+ if (!bp)
+ goto need_lookup;
- node = bp->b_addr;
- switch (be16_to_cpu(node->hdr.info.magic)) {
- case XFS_DA_NODE_MAGIC:
- case XFS_DA3_NODE_MAGIC:
- trace_xfs_attr_list_wrong_blk(context);
+ node = bp->b_addr;
+ switch (be16_to_cpu(node->hdr.info.magic)) {
+ case XFS_DA_NODE_MAGIC:
+ case XFS_DA3_NODE_MAGIC:
+ trace_xfs_attr_list_wrong_blk(context);
+ fa = xfs_da3_node_header_check(bp, dp->i_ino);
+ if (fa) {
+ __xfs_buf_mark_corrupt(bp, fa);
+ xfs_dirattr_mark_sick(dp, XFS_ATTR_FORK);
+ }
+ xfs_trans_brelse(context->tp, bp);
+ bp = NULL;
+ break;
+ case XFS_ATTR_LEAF_MAGIC:
+ case XFS_ATTR3_LEAF_MAGIC:
+ leaf = bp->b_addr;
+ fa = xfs_attr3_leaf_header_check(bp, dp->i_ino);
+ if (fa) {
+ __xfs_buf_mark_corrupt(bp, fa);
xfs_trans_brelse(context->tp, bp);
+ xfs_dirattr_mark_sick(dp, XFS_ATTR_FORK);
bp = NULL;
break;
- case XFS_ATTR_LEAF_MAGIC:
- case XFS_ATTR3_LEAF_MAGIC:
- leaf = bp->b_addr;
- xfs_attr3_leaf_hdr_from_disk(mp->m_attr_geo,
- &leafhdr, leaf);
- entries = xfs_attr3_leaf_entryp(leaf);
- if (cursor->hashval > be32_to_cpu(
- entries[leafhdr.count - 1].hashval)) {
- trace_xfs_attr_list_wrong_blk(context);
- xfs_trans_brelse(context->tp, bp);
- bp = NULL;
- } else if (cursor->hashval <= be32_to_cpu(
- entries[0].hashval)) {
- trace_xfs_attr_list_wrong_blk(context);
- xfs_trans_brelse(context->tp, bp);
- bp = NULL;
- }
- break;
- default:
+ }
+ xfs_attr3_leaf_hdr_from_disk(mp->m_attr_geo,
+ &leafhdr, leaf);
+ entries = xfs_attr3_leaf_entryp(leaf);
+ if (cursor->hashval > be32_to_cpu(
+ entries[leafhdr.count - 1].hashval)) {
+ trace_xfs_attr_list_wrong_blk(context);
+ xfs_trans_brelse(context->tp, bp);
+ bp = NULL;
+ } else if (cursor->hashval <= be32_to_cpu(
+ entries[0].hashval)) {
trace_xfs_attr_list_wrong_blk(context);
xfs_trans_brelse(context->tp, bp);
bp = NULL;
}
+ break;
+ default:
+ trace_xfs_attr_list_wrong_blk(context);
+ xfs_trans_brelse(context->tp, bp);
+ bp = NULL;
}
}
@@ -359,6 +394,7 @@ xfs_attr_node_list(
* Note that start of node block is same as start of leaf block.
*/
if (bp == NULL) {
+need_lookup:
error = xfs_attr_node_list_lookup(context, cursor, &bp);
if (error || !bp)
return error;
@@ -380,8 +416,8 @@ xfs_attr_node_list(
break;
cursor->blkno = leafhdr.forw;
xfs_trans_brelse(context->tp, bp);
- error = xfs_attr3_leaf_read(context->tp, dp, cursor->blkno,
- &bp);
+ error = xfs_attr3_leaf_read(context->tp, dp, dp->i_ino,
+ cursor->blkno, &bp);
if (error)
return error;
}
@@ -446,6 +482,7 @@ xfs_attr3_leaf_list_int(
*/
for (; i < ichdr.count; entry++, i++) {
char *name;
+ void *value;
int namelen, valuelen;
if (be32_to_cpu(entry->hashval) != cursor->hashval) {
@@ -463,6 +500,7 @@ xfs_attr3_leaf_list_int(
name_loc = xfs_attr3_leaf_name_local(leaf, i);
name = name_loc->nameval;
namelen = name_loc->namelen;
+ value = &name_loc->nameval[name_loc->namelen];
valuelen = be16_to_cpu(name_loc->valuelen);
} else {
xfs_attr_leaf_name_remote_t *name_rmt;
@@ -470,16 +508,18 @@ xfs_attr3_leaf_list_int(
name_rmt = xfs_attr3_leaf_name_remote(leaf, i);
name = name_rmt->name;
namelen = name_rmt->namelen;
+ value = NULL;
valuelen = be32_to_cpu(name_rmt->valuelen);
}
if (XFS_IS_CORRUPT(context->dp->i_mount,
- !xfs_attr_namecheck(name, namelen))) {
+ !xfs_attr_namecheck(entry->flags, name,
+ namelen))) {
xfs_dirattr_mark_sick(context->dp, XFS_ATTR_FORK);
return -EFSCORRUPTED;
}
context->put_listent(context, entry->flags,
- name, namelen, valuelen);
+ name, namelen, value, valuelen);
if (context->seen_enough)
break;
cursor->offset++;
@@ -501,7 +541,8 @@ xfs_attr_leaf_list(
trace_xfs_attr_leaf_list(context);
context->cursor.blkno = 0;
- error = xfs_attr3_leaf_read(context->tp, context->dp, 0, &bp);
+ error = xfs_attr3_leaf_read(context->tp, context->dp,
+ context->dp->i_ino, 0, &bp);
if (error)
return error;
@@ -515,6 +556,7 @@ xfs_attr_list_ilocked(
struct xfs_attr_list_context *context)
{
struct xfs_inode *dp = context->dp;
+ int error;
xfs_assert_ilocked(dp, XFS_ILOCK_SHARED | XFS_ILOCK_EXCL);
@@ -525,6 +567,12 @@ xfs_attr_list_ilocked(
return 0;
if (dp->i_af.if_format == XFS_DINODE_FMT_LOCAL)
return xfs_attr_shortform_list(context);
+
+ /* Prerequisite for xfs_attr_is_leaf */
+ error = xfs_iread_extents(NULL, dp, XFS_ATTR_FORK);
+ if (error)
+ return error;
+
if (xfs_attr_is_leaf(dp))
return xfs_attr_leaf_list(context);
return xfs_attr_node_list(context);
generated by cgit v1.2.3 (git 2.39.0) at 2024-08-04 08:23:17 +0300