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| author | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2025-03-13 21:22:24 +0100 |
|---|---|---|
| committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2025-03-13 21:24:16 +0100 |
| commit | 54c0b9b9dbf72467f099291950680ff8270b02ad (patch) | |
| tree | 867839d92f5a70d01493a5a26c7e23581aed9369 /ext2fs/ext2fs.h | |
| parent | 5ff93bc7b5727024394a75defbabb0bff9a2820b (diff) | |
ext2fs: Trap trying to access bogus data areas
i.e. superblock, block group descriptor table or beyond the end.
Diffstat (limited to 'ext2fs/ext2fs.h')
| -rw-r--r-- | ext2fs/ext2fs.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/ext2fs/ext2fs.h b/ext2fs/ext2fs.h index 99e93555..62ee9f77 100644 --- a/ext2fs/ext2fs.h +++ b/ext2fs/ext2fs.h @@ -405,6 +405,10 @@ bptr_offs (void *ptr) #define group_desc(num) (&group_desc_image[num]) extern struct ext2_group_desc *group_desc_image; +#define group_desc_block (boffs_block (SBLOCK_OFFS) + 1) +#define group_desc_size (groups_count * sizeof(struct ext2_group_desc)) +#define group_desc_block_end (group_desc_block + boffs_block(round_block(group_desc_size))) + #define inode_group_num(inum) (((inum) - 1) / le32toh (sblock->s_inodes_per_group)) /* Forward declarations for the following functions that are usually |