diff options
Diffstat (limited to 'sys/gnu/ext2fs/ext2_fs_sb.h')
| -rw-r--r-- | sys/gnu/ext2fs/ext2_fs_sb.h | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/sys/gnu/ext2fs/ext2_fs_sb.h b/sys/gnu/ext2fs/ext2_fs_sb.h new file mode 100644 index 0000000..f475ce2 --- /dev/null +++ b/sys/gnu/ext2fs/ext2_fs_sb.h @@ -0,0 +1,87 @@ +/* + * modified for EXT2FS support in Lites 1.1 + * + * Aug 1995, Godmar Back (gback@cs.utah.edu) + * University of Utah, Department of Computer Science + */ +/* + * linux/include/linux/ext2_fs_sb.h + * + * Copyright (C) 1992, 1993, 1994, 1995 + * Remy Card (card@masi.ibp.fr) + * Laboratoire MASI - Institut Blaise Pascal + * Universite Pierre et Marie Curie (Paris VI) + * + * from + * + * linux/include/linux/minix_fs_sb.h + * + * Copyright (C) 1991, 1992 Linus Torvalds + */ + +#ifndef _LINUX_EXT2_FS_SB +#define _LINUX_EXT2_FS_SB + +/* + * The following is not needed anymore since the descriptors buffer + * heads are now dynamically allocated + */ +/* #define EXT2_MAX_GROUP_DESC 8 */ + +#define EXT2_MAX_GROUP_LOADED 8 + +#if defined(LITES) || defined(__FreeBSD__) +#define buffer_head buf +#define MAXMNTLEN 512 +#endif + +/* + * second extended-fs super-block data in memory + */ +struct ext2_sb_info { + unsigned long s_frag_size; /* Size of a fragment in bytes */ + unsigned long s_frags_per_block;/* Number of fragments per block */ + unsigned long s_inodes_per_block;/* Number of inodes per block */ + unsigned long s_frags_per_group;/* Number of fragments in a group */ + unsigned long s_blocks_per_group;/* Number of blocks in a group */ + unsigned long s_inodes_per_group;/* Number of inodes in a group */ + unsigned long s_itb_per_group; /* Number of inode table blocks per group */ + 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 */ + 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; + unsigned short s_loaded_inode_bitmaps; + unsigned short s_loaded_block_bitmaps; + unsigned long s_inode_bitmap_number[EXT2_MAX_GROUP_LOADED]; + struct buffer_head * s_inode_bitmap[EXT2_MAX_GROUP_LOADED]; + unsigned long s_block_bitmap_number[EXT2_MAX_GROUP_LOADED]; + struct buffer_head * s_block_bitmap[EXT2_MAX_GROUP_LOADED]; + int s_rename_lock; +#if !defined(LITES) && !defined(__FreeBSD__) + struct wait_queue * s_rename_wait; +#endif + unsigned long s_mount_opt; + unsigned short s_resuid; + unsigned short s_resgid; + unsigned short s_mount_state; +#if defined(LITES) || defined(__FreeBSD__) + /* + stuff that FFS keeps in its super block or that linux + has in its non-ext2 specific super block and which is + generally considered useful + */ + unsigned long s_blocksize; + unsigned long s_blocksize_bits; + unsigned int s_bshift; /* = log2(s_blocksize) */ + quad_t s_qbmask; /* = s_blocksize - 1 */ + unsigned int s_fsbtodb; /* shift to get disk block */ + char s_rd_only; /* read-only */ + char s_dirt; /* fs modified flag */ + + char fs_fsmnt[MAXMNTLEN]; /* name mounted on */ +#endif +}; + +#endif /* _LINUX_EXT2_FS_SB */ |
