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path: root/fs/xfs/libxfs/xfs_dir2_leaf.c
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Diffstat (limited to 'fs/xfs/libxfs/xfs_dir2_leaf.c')
-rw-r--r--fs/xfs/libxfs/xfs_dir2_leaf.c112
1 files changed, 87 insertions, 25 deletions
diff --git a/fs/xfs/libxfs/xfs_dir2_leaf.c b/fs/xfs/libxfs/xfs_dir2_leaf.c
index d9b66306a9a7..71c2f22a3f6e 100644
--- a/fs/xfs/libxfs/xfs_dir2_leaf.c
+++ b/fs/xfs/libxfs/xfs_dir2_leaf.c
@@ -19,6 +19,7 @@
#include "xfs_trace.h"
#include "xfs_trans.h"
#include "xfs_buf_item.h"
+#include "xfs_health.h"
/*
* Local function declarations.
@@ -146,6 +147,8 @@ xfs_dir3_leaf_check_int(
xfs_dir2_leaf_tail_t *ltp;
int stale;
int i;
+ bool isleaf1 = (hdr->magic == XFS_DIR2_LEAF1_MAGIC ||
+ hdr->magic == XFS_DIR3_LEAF1_MAGIC);
ltp = xfs_dir2_leaf_tail_p(geo, leaf);
@@ -158,8 +161,7 @@ xfs_dir3_leaf_check_int(
return __this_address;
/* Leaves and bests don't overlap in leaf format. */
- if ((hdr->magic == XFS_DIR2_LEAF1_MAGIC ||
- hdr->magic == XFS_DIR3_LEAF1_MAGIC) &&
+ if (isleaf1 &&
(char *)&hdr->ents[hdr->count] > (char *)xfs_dir2_leaf_bests_p(ltp))
return __this_address;
@@ -175,6 +177,10 @@ xfs_dir3_leaf_check_int(
}
if (hdr->ents[i].address == cpu_to_be32(XFS_DIR2_NULL_DATAPTR))
stale++;
+ if (isleaf1 && xfs_dir2_dataptr_to_db(geo,
+ be32_to_cpu(hdr->ents[i].address)) >=
+ be32_to_cpu(ltp->bestcount))
+ return __this_address;
}
if (hdr->stale != stale)
return __this_address;
@@ -202,6 +208,29 @@ xfs_dir3_leaf_verify(
return xfs_dir3_leaf_check_int(mp, &leafhdr, bp->b_addr, true);
}
+xfs_failaddr_t
+xfs_dir3_leaf_header_check(
+ struct xfs_buf *bp,
+ xfs_ino_t owner)
+{
+ struct xfs_mount *mp = bp->b_mount;
+
+ if (xfs_has_crc(mp)) {
+ struct xfs_dir3_leaf *hdr3 = bp->b_addr;
+
+ if (hdr3->hdr.info.hdr.magic !=
+ cpu_to_be16(XFS_DIR3_LEAF1_MAGIC) &&
+ hdr3->hdr.info.hdr.magic !=
+ cpu_to_be16(XFS_DIR3_LEAFN_MAGIC))
+ return __this_address;
+
+ if (be64_to_cpu(hdr3->hdr.info.owner) != owner)
+ return __this_address;
+ }
+
+ return NULL;
+}
+
static void
xfs_dir3_leaf_read_verify(
struct xfs_buf *bp)
@@ -265,32 +294,60 @@ int
xfs_dir3_leaf_read(
struct xfs_trans *tp,
struct xfs_inode *dp,
+ xfs_ino_t owner,
xfs_dablk_t fbno,
struct xfs_buf **bpp)
{
+ xfs_failaddr_t fa;
int err;
err = xfs_da_read_buf(tp, dp, fbno, 0, bpp, XFS_DATA_FORK,
&xfs_dir3_leaf1_buf_ops);
- if (!err && tp && *bpp)
+ if (err || !(*bpp))
+ return err;
+
+ fa = xfs_dir3_leaf_header_check(*bpp, owner);
+ if (fa) {
+ __xfs_buf_mark_corrupt(*bpp, fa);
+ xfs_trans_brelse(tp, *bpp);
+ *bpp = NULL;
+ xfs_dirattr_mark_sick(dp, XFS_DATA_FORK);
+ return -EFSCORRUPTED;
+ }
+
+ if (tp)
xfs_trans_buf_set_type(tp, *bpp, XFS_BLFT_DIR_LEAF1_BUF);
- return err;
+ return 0;
}
int
xfs_dir3_leafn_read(
struct xfs_trans *tp,
struct xfs_inode *dp,
+ xfs_ino_t owner,
xfs_dablk_t fbno,
struct xfs_buf **bpp)
{
+ xfs_failaddr_t fa;
int err;
err = xfs_da_read_buf(tp, dp, fbno, 0, bpp, XFS_DATA_FORK,
&xfs_dir3_leafn_buf_ops);
- if (!err && tp && *bpp)
+ if (err || !(*bpp))
+ return err;
+
+ fa = xfs_dir3_leaf_header_check(*bpp, owner);
+ if (fa) {
+ __xfs_buf_mark_corrupt(*bpp, fa);
+ xfs_trans_brelse(tp, *bpp);
+ *bpp = NULL;
+ xfs_dirattr_mark_sick(dp, XFS_DATA_FORK);
+ return -EFSCORRUPTED;
+ }
+
+ if (tp)
xfs_trans_buf_set_type(tp, *bpp, XFS_BLFT_DIR_LEAFN_BUF);
- return err;
+ return 0;
}
/*
@@ -298,12 +355,12 @@ xfs_dir3_leafn_read(
*/
static void
xfs_dir3_leaf_init(
- struct xfs_mount *mp,
- struct xfs_trans *tp,
+ struct xfs_da_args *args,
struct xfs_buf *bp,
- xfs_ino_t owner,
uint16_t type)
{
+ struct xfs_mount *mp = args->dp->i_mount;
+ struct xfs_trans *tp = args->trans;
struct xfs_dir2_leaf *leaf = bp->b_addr;
ASSERT(type == XFS_DIR2_LEAF1_MAGIC || type == XFS_DIR2_LEAFN_MAGIC);
@@ -317,7 +374,7 @@ xfs_dir3_leaf_init(
? cpu_to_be16(XFS_DIR3_LEAF1_MAGIC)
: cpu_to_be16(XFS_DIR3_LEAFN_MAGIC);
leaf3->info.blkno = cpu_to_be64(xfs_buf_daddr(bp));
- leaf3->info.owner = cpu_to_be64(owner);
+ leaf3->info.owner = cpu_to_be64(args->owner);
uuid_copy(&leaf3->info.uuid, &mp->m_sb.sb_meta_uuid);
} else {
memset(leaf, 0, sizeof(*leaf));
@@ -350,7 +407,6 @@ xfs_dir3_leaf_get_buf(
{
struct xfs_inode *dp = args->dp;
struct xfs_trans *tp = args->trans;
- struct xfs_mount *mp = dp->i_mount;
struct xfs_buf *bp;
int error;
@@ -363,7 +419,7 @@ xfs_dir3_leaf_get_buf(
if (error)
return error;
- xfs_dir3_leaf_init(mp, tp, bp, dp->i_ino, magic);
+ xfs_dir3_leaf_init(args, bp, magic);
xfs_dir3_leaf_log_header(args, bp);
if (magic == XFS_DIR2_LEAF1_MAGIC)
xfs_dir3_leaf_log_tail(args, bp);
@@ -641,7 +697,8 @@ xfs_dir2_leaf_addname(
trace_xfs_dir2_leaf_addname(args);
- error = xfs_dir3_leaf_read(tp, dp, args->geo->leafblk, &lbp);
+ error = xfs_dir3_leaf_read(tp, dp, args->owner, args->geo->leafblk,
+ &lbp);
if (error)
return error;
@@ -828,9 +885,9 @@ xfs_dir2_leaf_addname(
* Already had space in some data block.
* Just read that one in.
*/
- error = xfs_dir3_data_read(tp, dp,
- xfs_dir2_db_to_da(args->geo, use_block),
- 0, &dbp);
+ error = xfs_dir3_data_read(tp, dp, args->owner,
+ xfs_dir2_db_to_da(args->geo, use_block), 0,
+ &dbp);
if (error) {
xfs_trans_brelse(tp, lbp);
return error;
@@ -1232,7 +1289,8 @@ xfs_dir2_leaf_lookup_int(
tp = args->trans;
mp = dp->i_mount;
- error = xfs_dir3_leaf_read(tp, dp, args->geo->leafblk, &lbp);
+ error = xfs_dir3_leaf_read(tp, dp, args->owner, args->geo->leafblk,
+ &lbp);
if (error)
return error;
@@ -1270,9 +1328,9 @@ xfs_dir2_leaf_lookup_int(
if (newdb != curdb) {
if (dbp)
xfs_trans_brelse(tp, dbp);
- error = xfs_dir3_data_read(tp, dp,
- xfs_dir2_db_to_da(args->geo, newdb),
- 0, &dbp);
+ error = xfs_dir3_data_read(tp, dp, args->owner,
+ xfs_dir2_db_to_da(args->geo, newdb), 0,
+ &dbp);
if (error) {
xfs_trans_brelse(tp, lbp);
return error;
@@ -1312,9 +1370,9 @@ xfs_dir2_leaf_lookup_int(
ASSERT(cidb != -1);
if (cidb != curdb) {
xfs_trans_brelse(tp, dbp);
- error = xfs_dir3_data_read(tp, dp,
- xfs_dir2_db_to_da(args->geo, cidb),
- 0, &dbp);
+ error = xfs_dir3_data_read(tp, dp, args->owner,
+ xfs_dir2_db_to_da(args->geo, cidb), 0,
+ &dbp);
if (error) {
xfs_trans_brelse(tp, lbp);
return error;
@@ -1388,8 +1446,10 @@ xfs_dir2_leaf_removename(
bestsp = xfs_dir2_leaf_bests_p(ltp);
if (be16_to_cpu(bestsp[db]) != oldbest) {
xfs_buf_mark_corrupt(lbp);
+ xfs_da_mark_sick(args);
return -EFSCORRUPTED;
}
+
/*
* Mark the former data entry unused.
*/
@@ -1606,7 +1666,8 @@ xfs_dir2_leaf_trim_data(
/*
* Read the offending data block. We need its buffer.
*/
- error = xfs_dir3_data_read(tp, dp, xfs_dir2_db_to_da(geo, db), 0, &dbp);
+ error = xfs_dir3_data_read(tp, dp, args->owner,
+ xfs_dir2_db_to_da(geo, db), 0, &dbp);
if (error)
return error;
@@ -1745,7 +1806,8 @@ xfs_dir2_node_to_leaf(
/*
* Read the freespace block.
*/
- error = xfs_dir2_free_read(tp, dp, args->geo->freeblk, &fbp);
+ error = xfs_dir2_free_read(tp, dp, args->owner, args->geo->freeblk,
+ &fbp);
if (error)
return error;
xfs_dir2_free_hdr_from_disk(mp, &freehdr, fbp->b_addr);
generated by cgit (git 2.34.1) at 2025-12-25 05:13:23 +0000