95 lines
4.5 KiB
Diff
95 lines
4.5 KiB
Diff
diff -Nrup a/stage2/fsys_ext2fs.c b/stage2/fsys_ext2fs.c
|
|
--- a/stage2/fsys_ext2fs.c 2004-08-08 20:19:18.000000000 +0200
|
|
+++ b/stage2/fsys_ext2fs.c 2008-01-30 14:27:20.000000000 +0100
|
|
@@ -79,7 +79,52 @@ struct ext2_super_block
|
|
__u32 s_rev_level; /* Revision level */
|
|
__u16 s_def_resuid; /* Default uid for reserved blocks */
|
|
__u16 s_def_resgid; /* Default gid for reserved blocks */
|
|
- __u32 s_reserved[235]; /* Padding to the end of the block */
|
|
+ /*
|
|
+ * These fields are for EXT2_DYNAMIC_REV superblocks only.
|
|
+ *
|
|
+ * Note: the difference between the compatible feature set and
|
|
+ * the incompatible feature set is that if there is a bit set
|
|
+ * in the incompatible feature set that the kernel doesn't
|
|
+ * know about, it should refuse to mount the filesystem.
|
|
+ *
|
|
+ * e2fsck's requirements are more strict; if it doesn't know
|
|
+ * about a feature in either the compatible or incompatible
|
|
+ * feature set, it must abort and not try to meddle with
|
|
+ * things it doesn't understand...
|
|
+ */
|
|
+ __u32 s_first_ino; /* First non-reserved inode */
|
|
+ __u16 s_inode_size; /* size of inode structure */
|
|
+ __u16 s_block_group_nr; /* block group # of this superblock */
|
|
+ __u32 s_feature_compat; /* compatible feature set */
|
|
+ __u32 s_feature_incompat; /* incompatible feature set */
|
|
+ __u32 s_feature_ro_compat; /* readonly-compatible feature set */
|
|
+ __u8 s_uuid[16]; /* 128-bit uuid for volume */
|
|
+ char s_volume_name[16]; /* volume name */
|
|
+ char s_last_mounted[64]; /* directory where last mounted */
|
|
+ __u32 s_algorithm_usage_bitmap; /* For compression */
|
|
+ /*
|
|
+ * Performance hints. Directory preallocation should only
|
|
+ * happen if the EXT2_FEATURE_COMPAT_DIR_PREALLOC flag is on.
|
|
+ */
|
|
+ __u8 s_prealloc_blocks; /* Nr of blocks to try to preallocate*/
|
|
+ __u8 s_prealloc_dir_blocks; /* Nr to preallocate for dirs */
|
|
+ __u16 s_reserved_gdt_blocks;/* Per group table for online growth */
|
|
+ /*
|
|
+ * Journaling support valid if EXT2_FEATURE_COMPAT_HAS_JOURNAL set.
|
|
+ */
|
|
+ __u8 s_journal_uuid[16]; /* uuid of journal superblock */
|
|
+ __u32 s_journal_inum; /* inode number of journal file */
|
|
+ __u32 s_journal_dev; /* device number of journal file */
|
|
+ __u32 s_last_orphan; /* start of list of inodes to delete */
|
|
+ __u32 s_hash_seed[4]; /* HTREE hash seed */
|
|
+ __u8 s_def_hash_version; /* Default hash version to use */
|
|
+ __u8 s_jnl_backup_type; /* Default type of journal backup */
|
|
+ __u16 s_reserved_word_pad;
|
|
+ __u32 s_default_mount_opts;
|
|
+ __u32 s_first_meta_bg; /* First metablock group */
|
|
+ __u32 s_mkfs_time; /* When the filesystem was created */
|
|
+ __u32 s_jnl_blocks[17]; /* Backup of the journal inode */
|
|
+ __u32 s_reserved[172]; /* Padding to the end of the block */
|
|
};
|
|
|
|
struct ext2_group_desc
|
|
@@ -218,6 +263,9 @@ struct ext2_dir_entry
|
|
#define EXT2_ADDR_PER_BLOCK(s) (EXT2_BLOCK_SIZE(s) / sizeof (__u32))
|
|
#define EXT2_ADDR_PER_BLOCK_BITS(s) (log2(EXT2_ADDR_PER_BLOCK(s)))
|
|
|
|
+#define EXT2_INODE_SIZE(s) (SUPERBLOCK->s_inode_size)
|
|
+#define EXT2_INODES_PER_BLOCK(s) (EXT2_BLOCK_SIZE(s)/EXT2_INODE_SIZE(s))
|
|
+
|
|
/* linux/ext2_fs.h */
|
|
#define EXT2_BLOCK_SIZE_BITS(s) ((s)->s_log_block_size + 10)
|
|
/* kind of from ext2/super.c */
|
|
@@ -553,7 +601,7 @@ ext2fs_dir (char *dirname)
|
|
gdp = GROUP_DESC;
|
|
ino_blk = gdp[desc].bg_inode_table +
|
|
(((current_ino - 1) % (SUPERBLOCK->s_inodes_per_group))
|
|
- >> log2 (EXT2_BLOCK_SIZE (SUPERBLOCK) / sizeof (struct ext2_inode)));
|
|
+ >> log2 (EXT2_INODES_PER_BLOCK (SUPERBLOCK)));
|
|
#ifdef E2DEBUG
|
|
printf ("inode table fsblock=%d\n", ino_blk);
|
|
#endif /* E2DEBUG */
|
|
@@ -565,13 +613,12 @@ ext2fs_dir (char *dirname)
|
|
/* reset indirect blocks! */
|
|
mapblock2 = mapblock1 = -1;
|
|
|
|
- raw_inode = INODE +
|
|
- ((current_ino - 1)
|
|
- & (EXT2_BLOCK_SIZE (SUPERBLOCK) / sizeof (struct ext2_inode) - 1));
|
|
+ raw_inode = (struct ext2_inode *)((char *)INODE +
|
|
+ ((current_ino - 1) & (EXT2_INODES_PER_BLOCK (SUPERBLOCK) - 1)) *
|
|
+ EXT2_INODE_SIZE (SUPERBLOCK));
|
|
#ifdef E2DEBUG
|
|
printf ("ipb=%d, sizeof(inode)=%d\n",
|
|
- (EXT2_BLOCK_SIZE (SUPERBLOCK) / sizeof (struct ext2_inode)),
|
|
- sizeof (struct ext2_inode));
|
|
+ EXT2_INODES_PER_BLOCK (SUPERBLOCK), EXT2_INODE_SIZE (SUPERBLOCK));
|
|
printf ("inode=%x, raw_inode=%x\n", INODE, raw_inode);
|
|
printf ("offset into inode table block=%d\n", (int) raw_inode - (int) INODE);
|
|
for (i = (unsigned char *) INODE; i <= (unsigned char *) raw_inode;
|