svn commit: r187395 - head/sys/gnu/fs/ext2fs
Kostik Belousov
kostikbel at gmail.com
Sun Jan 18 06:06:49 PST 2009
On Sun, Jan 18, 2009 at 02:04:56PM +0000, Stanislav Sedov wrote:
> Author: stas
> Date: Sun Jan 18 14:04:56 2009
> New Revision: 187395
> URL: http://svn.freebsd.org/changeset/base/187395
>
> Log:
> - Obtain inode sizes and location of the first inode based on the contents
> of superblock rather than using hardcoded values. This fixes ext2fs on
> filesystems with inode sized other than 128.
>
> Submitted by: Alex Lyashkov <Alexey.Lyashkov at Sun.COM> (based on)
> MFC after: 2 weeks
>
> Modified:
> head/sys/gnu/fs/ext2fs/ext2_fs.h
> head/sys/gnu/fs/ext2fs/ext2_fs_sb.h
> head/sys/gnu/fs/ext2fs/ext2_inode.c
> head/sys/gnu/fs/ext2fs/ext2_linux_ialloc.c
> head/sys/gnu/fs/ext2fs/ext2_vfsops.c
>
> Modified: head/sys/gnu/fs/ext2fs/ext2_fs.h
> ==============================================================================
> --- head/sys/gnu/fs/ext2fs/ext2_fs.h Sun Jan 18 13:04:38 2009 (r187394)
> +++ head/sys/gnu/fs/ext2fs/ext2_fs.h Sun Jan 18 14:04:56 2009 (r187395)
> @@ -150,8 +150,8 @@
> #else /* !notyet */
> #define EXT2_INODES_PER_BLOCK(s) ((s)->s_inodes_per_block)
> /* Should be sizeof(struct ext2_inode): */
> -#define EXT2_INODE_SIZE 128
> -#define EXT2_FIRST_INO 11
> +#define EXT2_INODE_SIZE(s) ((s)->s_inode_size)
> +#define EXT2_FIRST_INO(s) ((s)->s_first_inode)
> #endif /* notyet */
>
> /*
>
> Modified: head/sys/gnu/fs/ext2fs/ext2_fs_sb.h
> ==============================================================================
> --- head/sys/gnu/fs/ext2fs/ext2_fs_sb.h Sun Jan 18 13:04:38 2009 (r187394)
> +++ head/sys/gnu/fs/ext2fs/ext2_fs_sb.h Sun Jan 18 14:04:56 2009 (r187395)
> @@ -63,6 +63,8 @@ struct ext2_sb_info {
> unsigned long s_db_per_group; /* Number of descriptor blocks per group */
> unsigned long s_desc_per_block; /* Number of group descriptors per block */
> unsigned long s_groups_count; /* Number of groups in the fs */
> + unsigned long s_first_inode; /* First inode on fs */
> + unsigned int s_inode_size; /* Size for inode with extra data */
> struct buffer_head * s_sbh; /* Buffer containing the super block */
> struct ext2_super_block * s_es; /* Pointer to the super block in the buffer */
> struct buffer_head ** s_group_desc;
>
> Modified: head/sys/gnu/fs/ext2fs/ext2_inode.c
> ==============================================================================
> --- head/sys/gnu/fs/ext2fs/ext2_inode.c Sun Jan 18 13:04:38 2009 (r187394)
> +++ head/sys/gnu/fs/ext2fs/ext2_inode.c Sun Jan 18 14:04:56 2009 (r187395)
> @@ -91,7 +91,7 @@ ext2_update(vp, waitfor)
> return (error);
> }
> ext2_i2ei(ip, (struct ext2_inode *)((char *)bp->b_data +
> - EXT2_INODE_SIZE * ino_to_fsbo(fs, ip->i_number)));
> + EXT2_INODE_SIZE(fs) * ino_to_fsbo(fs, ip->i_number)));
> if (waitfor && (vp->v_mount->mnt_kern_flag & MNTK_ASYNC) == 0)
> return (bwrite(bp));
> else {
>
> Modified: head/sys/gnu/fs/ext2fs/ext2_linux_ialloc.c
> ==============================================================================
> --- head/sys/gnu/fs/ext2fs/ext2_linux_ialloc.c Sun Jan 18 13:04:38 2009 (r187394)
> +++ head/sys/gnu/fs/ext2fs/ext2_linux_ialloc.c Sun Jan 18 14:04:56 2009 (r187395)
> @@ -225,7 +225,7 @@ void ext2_free_inode (struct inode * ino
>
> sb = inode->i_e2fs;
> lock_super (DEVVP(inode));
> - if (inode->i_number < EXT2_FIRST_INO ||
> + if (inode->i_number < EXT2_FIRST_INO(sb) ||
> inode->i_number > sb->s_es->s_inodes_count) {
> printf ("free_inode reserved inode or nonexistent inode");
> unlock_super (DEVVP(inode));
> @@ -435,7 +435,7 @@ repeat:
> goto repeat;
> }
> j += i * EXT2_INODES_PER_GROUP(sb) + 1;
> - if (j < EXT2_FIRST_INO || j > es->s_inodes_count) {
> + if (j < EXT2_FIRST_INO(sb) || j > es->s_inodes_count) {
> printf ( "ext2_new_inode:"
> "reserved inode or inode > inodes count - "
> "block_group = %d,inode=%d", i, j);
>
> Modified: head/sys/gnu/fs/ext2fs/ext2_vfsops.c
> ==============================================================================
> --- head/sys/gnu/fs/ext2fs/ext2_vfsops.c Sun Jan 18 13:04:38 2009 (r187394)
> +++ head/sys/gnu/fs/ext2fs/ext2_vfsops.c Sun Jan 18 14:04:56 2009 (r187395)
> @@ -424,7 +424,11 @@ static int compute_sb_data(devvp, es, fs
> V(s_frags_per_group)
> fs->s_inodes_per_group = es->s_inodes_per_group;
> V(s_inodes_per_group)
> - fs->s_inodes_per_block = fs->s_blocksize / EXT2_INODE_SIZE;
> + fs->s_inode_size = es->s_inode_size;
> + V(s_inode_size)
> + fs->s_first_inode = es->s_first_ino;
> + V(s_first_inode);
> + fs->s_inodes_per_block = fs->s_blocksize / EXT2_INODE_SIZE(fs);
> V(s_inodes_per_block)
> fs->s_itb_per_group = fs->s_inodes_per_group /fs->s_inodes_per_block;
> V(s_itb_per_group)
> @@ -578,7 +582,7 @@ loop:
> return (error);
> }
> ext2_ei2i((struct ext2_inode *) ((char *)bp->b_data +
> - EXT2_INODE_SIZE * ino_to_fsbo(fs, ip->i_number)), ip);
> + EXT2_INODE_SIZE(fs) * ino_to_fsbo(fs, ip->i_number)), ip);
> brelse(bp);
> VOP_UNLOCK(vp, 0);
> vrele(vp);
> @@ -1012,7 +1016,7 @@ printf("ext2_vget(%d) dbn= %d ", ino, fs
> return (error);
> }
> /* convert ext2 inode to dinode */
> - ext2_ei2i((struct ext2_inode *) ((char *)bp->b_data + EXT2_INODE_SIZE *
> + ext2_ei2i((struct ext2_inode *) ((char *)bp->b_data + EXT2_INODE_SIZE(fs) *
> ino_to_fsbo(fs, ino)), ip);
> ip->i_block_group = ino_to_cg(fs, ino);
> ip->i_next_alloc_block = 0;
Please see a discussion on the fs@ and reasoning why I declined to commit
the similar patch.
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