forked from pool/grub2
108 lines
3.2 KiB
Diff
108 lines
3.2 KiB
Diff
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From 664a8569c5c8c101879b384dbdaa81dc38cf2f68 Mon Sep 17 00:00:00 2001
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From: Michael Chang <mchang@suse.com>
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Date: Wed, 17 Jan 2024 11:23:35 +0800
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Subject: [PATCH] Revert "fs/xfs: Fix XFS directory extent parsing"
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This reverts commit 07318ee7e11a00b9c1dea4c6b4edf62af35a511a.
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---
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grub-core/fs/xfs.c | 52 +++++++++++++---------------------------------
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1 file changed, 14 insertions(+), 38 deletions(-)
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diff --git a/grub-core/fs/xfs.c b/grub-core/fs/xfs.c
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index bc2224dbb..9dfe3a2fa 100644
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--- a/grub-core/fs/xfs.c
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+++ b/grub-core/fs/xfs.c
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@@ -228,12 +228,6 @@ struct grub_xfs_inode
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/* Size of struct grub_xfs_inode v2, up to unused4 member included. */
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#define XFS_V2_INODE_SIZE (XFS_V3_INODE_SIZE - 76)
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-struct grub_xfs_dir_leaf_entry
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-{
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- grub_uint32_t hashval;
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- grub_uint32_t address;
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-} GRUB_PACKED;
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-
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struct grub_xfs_dirblock_tail
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{
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grub_uint32_t leaf_count;
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@@ -900,8 +894,9 @@ grub_xfs_iterate_dir (grub_fshelp_node_t dir,
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{
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struct grub_xfs_dir2_entry *direntry =
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grub_xfs_first_de(dir->data, dirblock);
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- int entries = -1;
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- char *end = dirblock + dirblk_size;
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+ int entries;
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+ struct grub_xfs_dirblock_tail *tail =
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+ grub_xfs_dir_tail(dir->data, dirblock);
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numread = grub_xfs_read_file (dir, 0, 0,
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blk << dirblk_log2,
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@@ -912,27 +907,14 @@ grub_xfs_iterate_dir (grub_fshelp_node_t dir,
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return 0;
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}
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- /*
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- * Leaf and tail information are only in the data block if the number
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- * of extents is 1.
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- */
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- if (dir->inode.nextents == grub_cpu_to_be32_compile_time (1))
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- {
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- struct grub_xfs_dirblock_tail *tail = grub_xfs_dir_tail (dir->data, dirblock);
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-
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- end = (char *) tail;
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-
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- /* Subtract the space used by leaf nodes. */
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- end -= grub_be_to_cpu32 (tail->leaf_count) * sizeof (struct grub_xfs_dir_leaf_entry);
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+ entries = (grub_be_to_cpu32 (tail->leaf_count)
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+ - grub_be_to_cpu32 (tail->leaf_stale));
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- entries = grub_be_to_cpu32 (tail->leaf_count) - grub_be_to_cpu32 (tail->leaf_stale);
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-
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- if (!entries)
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- continue;
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- }
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+ if (!entries)
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+ continue;
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/* Iterate over all entries within this block. */
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- while ((char *) direntry < (char *) end)
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+ while ((char *)direntry < (char *)tail)
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{
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grub_uint8_t *freetag;
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char *filename;
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@@ -952,7 +934,7 @@ grub_xfs_iterate_dir (grub_fshelp_node_t dir,
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}
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filename = (char *)(direntry + 1);
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- if (filename + direntry->len + 1 > (char *) end)
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+ if (filename + direntry->len - 1 > (char *) tail)
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return grub_error (GRUB_ERR_BAD_FS, "invalid XFS directory entry");
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/* The byte after the filename is for the filetype, padding, or
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@@ -966,17 +948,11 @@ grub_xfs_iterate_dir (grub_fshelp_node_t dir,
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return 1;
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}
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- /*
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- * The expected number of directory entries is only tracked for the
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- * single extent case.
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- */
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- if (dir->inode.nextents == grub_cpu_to_be32_compile_time (1))
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- {
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- /* Check if last direntry in this block is reached. */
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- entries--;
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- if (!entries)
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- break;
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- }
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+ /* Check if last direntry in this block is
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+ reached. */
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+ entries--;
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+ if (!entries)
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+ break;
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/* Select the next directory entry. */
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direntry = grub_xfs_next_de(dir->data, direntry);
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--
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2.43.0
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