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Add inode bitmap tail initialization.

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Make ext2fs compatible with changes introduced in e2fsprogs v1.45.2.
Now the tail of inode bitmap is filled with 0xff pattern explicitly during
bitmap initialization phase to avoid e2fsck error like:
"Padding at end of inode bitmap is not set."
This commit is contained in:
Fedor Uporov 2020-05-17 14:00:54 +00:00
parent 8bebfe076d
commit ec81c9cc06
1 changed files with 15 additions and 2 deletions
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17
sys/fs/ext2fs/ext2_alloc.c
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@ -1287,6 +1287,16 @@ ext2_zero_inode_table(struct inode *ip, int cg)
return (0);
}
static void
ext2_fix_bitmap_tail(unsigned char *bitmap, int first, int last)
{
int i;
for (i = first; i <= last; i++)
bitmap[i] = 0xff;
}
/*
* Determine whether an inode can be allocated.
*
@ -1299,7 +1309,7 @@ ext2_nodealloccg(struct inode *ip, int cg, daddr_t ipref, int mode)
struct m_ext2fs *fs;
struct buf *bp;
struct ext2mount *ump;
int error, start, len, ifree;
int error, start, len, ifree, ibytes;
char *ibp, *loc;
ipref--; /* to avoid a lot of (ipref -1) */
@ -1320,7 +1330,10 @@ ext2_nodealloccg(struct inode *ip, int cg, daddr_t ipref, int mode)
if (EXT2_HAS_RO_COMPAT_FEATURE(fs, EXT2F_ROCOMPAT_GDT_CSUM) ||
EXT2_HAS_RO_COMPAT_FEATURE(fs, EXT2F_ROCOMPAT_METADATA_CKSUM)) {
if (fs->e2fs_gd[cg].ext4bgd_flags & EXT2_BG_INODE_UNINIT) {
memset(bp->b_data, 0, fs->e2fs_bsize);
ibytes = fs->e2fs_ipg / 8;
memset(bp->b_data, 0, ibytes - 1);
ext2_fix_bitmap_tail(bp->b_data, ibytes,
fs->e2fs_bsize - 1);
fs->e2fs_gd[cg].ext4bgd_flags &= ~EXT2_BG_INODE_UNINIT;
}
ext2_gd_i_bitmap_csum_set(fs, cg, bp);