Annotation of /trunk/grub/patches/grub-0.97-inode-size.patch
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Revision 1054 -
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Fri Jun 25 10:58:40 2010 UTC (14 years, 3 months ago) by niro
File size: 4814 byte(s)
Fri Jun 25 10:58:40 2010 UTC (14 years, 3 months ago) by niro
File size: 4814 byte(s)
added dynamic inodes patch
1 | niro | 1054 | diff -Naur grub-0.97-800/stage2/fsys_ext2fs.c grub-0.97-810/stage2/fsys_ext2fs.c |
2 | --- grub-0.97-800/stage2/fsys_ext2fs.c 2008-07-21 00:40:21.668879475 -0600 | ||
3 | +++ grub-0.97-810/stage2/fsys_ext2fs.c 2008-07-21 01:01:11.063953773 -0600 | ||
4 | @@ -79,7 +79,52 @@ | ||
5 | __u32 s_rev_level; /* Revision level */ | ||
6 | __u16 s_def_resuid; /* Default uid for reserved blocks */ | ||
7 | __u16 s_def_resgid; /* Default gid for reserved blocks */ | ||
8 | - __u32 s_reserved[235]; /* Padding to the end of the block */ | ||
9 | + /* | ||
10 | + * These fields are for EXT2_DYNAMIC_REV superblocks only. | ||
11 | + * | ||
12 | + * Note: the difference between the compatible feature set and | ||
13 | + * the incompatible feature set is that if there is a bit set | ||
14 | + * in the incompatible feature set that the kernel doesn't | ||
15 | + * know about, it should refuse to mount the filesystem. | ||
16 | + * | ||
17 | + * e2fsck's requirements are more strict; if it doesn't know | ||
18 | + * about a feature in either the compatible or incompatible | ||
19 | + * feature set, it must abort and not try to meddle with | ||
20 | + * things it doesn't understand... | ||
21 | + */ | ||
22 | + __u32 s_first_ino; /* First non-reserved inode */ | ||
23 | + __u16 s_inode_size; /* size of inode structure */ | ||
24 | + __u16 s_block_group_nr; /* block group # of this superblock */ | ||
25 | + __u32 s_feature_compat; /* compatible feature set */ | ||
26 | + __u32 s_feature_incompat; /* incompatible feature set */ | ||
27 | + __u32 s_feature_ro_compat; /* readonly-compatible feature set */ | ||
28 | + __u8 s_uuid[16]; /* 128-bit uuid for volume */ | ||
29 | + char s_volume_name[16]; /* volume name */ | ||
30 | + char s_last_mounted[64]; /* directory where last mounted */ | ||
31 | + __u32 s_algorithm_usage_bitmap; /* For compression */ | ||
32 | + /* | ||
33 | + * Performance hints. Directory preallocation should only | ||
34 | + * happen if the EXT2_FEATURE_COMPAT_DIR_PREALLOC flag is on. | ||
35 | + */ | ||
36 | + __u8 s_prealloc_blocks; /* Nr of blocks to try to preallocate*/ | ||
37 | + __u8 s_prealloc_dir_blocks; /* Nr to preallocate for dirs */ | ||
38 | + __u16 s_reserved_gdt_blocks;/* Per group table for online growth */ | ||
39 | + /* | ||
40 | + * Journaling support valid if EXT2_FEATURE_COMPAT_HAS_JOURNAL set. | ||
41 | + */ | ||
42 | + __u8 s_journal_uuid[16]; /* uuid of journal superblock */ | ||
43 | + __u32 s_journal_inum; /* inode number of journal file */ | ||
44 | + __u32 s_journal_dev; /* device number of journal file */ | ||
45 | + __u32 s_last_orphan; /* start of list of inodes to delete */ | ||
46 | + __u32 s_hash_seed[4]; /* HTREE hash seed */ | ||
47 | + __u8 s_def_hash_version; /* Default hash version to use */ | ||
48 | + __u8 s_jnl_backup_type; /* Default type of journal backup */ | ||
49 | + __u16 s_reserved_word_pad; | ||
50 | + __u32 s_default_mount_opts; | ||
51 | + __u32 s_first_meta_bg; /* First metablock group */ | ||
52 | + __u32 s_mkfs_time; /* When the filesystem was created */ | ||
53 | + __u32 s_jnl_blocks[17]; /* Backup of the journal inode */ | ||
54 | + __u32 s_reserved[172]; /* Padding to the end of the block */ | ||
55 | }; | ||
56 | |||
57 | struct ext2_group_desc | ||
58 | @@ -218,6 +263,14 @@ | ||
59 | #define EXT2_ADDR_PER_BLOCK(s) (EXT2_BLOCK_SIZE(s) / sizeof (__u32)) | ||
60 | #define EXT2_ADDR_PER_BLOCK_BITS(s) (log2(EXT2_ADDR_PER_BLOCK(s))) | ||
61 | |||
62 | +#define EXT2_GOOD_OLD_REV 0 /* The good old (original) format */ | ||
63 | +#define EXT2_DYNAMIC_REV 1 /* V2 format w/ dynamic inode sizes */ | ||
64 | +#define EXT2_GOOD_OLD_INODE_SIZE 128 | ||
65 | +#define EXT2_INODE_SIZE(s) (((s)->s_rev_level == EXT2_GOOD_OLD_REV) ? \ | ||
66 | + EXT2_GOOD_OLD_INODE_SIZE : \ | ||
67 | + (s)->s_inode_size) | ||
68 | +#define EXT2_INODES_PER_BLOCK(s) (EXT2_BLOCK_SIZE(s)/EXT2_INODE_SIZE(s)) | ||
69 | + | ||
70 | /* linux/ext2_fs.h */ | ||
71 | #define EXT2_BLOCK_SIZE_BITS(s) ((s)->s_log_block_size + 10) | ||
72 | /* kind of from ext2/super.c */ | ||
73 | @@ -553,7 +606,7 @@ | ||
74 | gdp = GROUP_DESC; | ||
75 | ino_blk = gdp[desc].bg_inode_table + | ||
76 | (((current_ino - 1) % (SUPERBLOCK->s_inodes_per_group)) | ||
77 | - >> log2 (EXT2_BLOCK_SIZE (SUPERBLOCK) / sizeof (struct ext2_inode))); | ||
78 | + >> log2 (EXT2_INODES_PER_BLOCK (SUPERBLOCK))); | ||
79 | #ifdef E2DEBUG | ||
80 | printf ("inode table fsblock=%d\n", ino_blk); | ||
81 | #endif /* E2DEBUG */ | ||
82 | @@ -565,13 +618,12 @@ | ||
83 | /* reset indirect blocks! */ | ||
84 | mapblock2 = mapblock1 = -1; | ||
85 | |||
86 | - raw_inode = INODE + | ||
87 | - ((current_ino - 1) | ||
88 | - & (EXT2_BLOCK_SIZE (SUPERBLOCK) / sizeof (struct ext2_inode) - 1)); | ||
89 | + raw_inode = (struct ext2_inode *)((char *)INODE + | ||
90 | + ((current_ino - 1) & (EXT2_INODES_PER_BLOCK (SUPERBLOCK) - 1)) * | ||
91 | + EXT2_INODE_SIZE (SUPERBLOCK)); | ||
92 | #ifdef E2DEBUG | ||
93 | printf ("ipb=%d, sizeof(inode)=%d\n", | ||
94 | - (EXT2_BLOCK_SIZE (SUPERBLOCK) / sizeof (struct ext2_inode)), | ||
95 | - sizeof (struct ext2_inode)); | ||
96 | + EXT2_INODES_PER_BLOCK (SUPERBLOCK), EXT2_INODE_SIZE (SUPERBLOCK)); | ||
97 | printf ("inode=%x, raw_inode=%x\n", INODE, raw_inode); | ||
98 | printf ("offset into inode table block=%d\n", (int) raw_inode - (int) INODE); | ||
99 | for (i = (unsigned char *) INODE; i <= (unsigned char *) raw_inode; | ||
100 |