grub/patches/grub-0.97-inode-size.patch

diff -Naur grub-0.97-800/stage2/fsys_ext2fs.c grub-0.97-810/stage2/fsys_ext2fs.c
--- grub-0.97-800/stage2/fsys_ext2fs.c	2008-07-21 00:40:21.668879475 -0600
+++ grub-0.97-810/stage2/fsys_ext2fs.c	2008-07-21 01:01:11.063953773 -0600
@@ -79,7 +79,52 @@
     __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 +263,14 @@
 #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_GOOD_OLD_REV   0   /* The good old (original) format */
+#define EXT2_DYNAMIC_REV    1   /* V2 format w/ dynamic inode sizes */
+#define EXT2_GOOD_OLD_INODE_SIZE 128
+#define EXT2_INODE_SIZE(s)  (((s)->s_rev_level == EXT2_GOOD_OLD_REV) ? \
+                 EXT2_GOOD_OLD_INODE_SIZE : \
+                 (s)->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 +606,7 @@
       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 +618,12 @@
       /* 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;

1	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