From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 16 Apr 2005 15:20:36 -0700 Subject: Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! --- include/linux/efs_fs_sb.h | 62 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 62 insertions(+) create mode 100644 include/linux/efs_fs_sb.h (limited to 'include/linux/efs_fs_sb.h') diff --git a/include/linux/efs_fs_sb.h b/include/linux/efs_fs_sb.h new file mode 100644 index 000000000000..c76088baef28 --- /dev/null +++ b/include/linux/efs_fs_sb.h @@ -0,0 +1,62 @@ +/* + * efs_fs_sb.h + * + * Copyright (c) 1999 Al Smith + * + * Portions derived from IRIX header files (c) 1988 Silicon Graphics + */ + +#ifndef __EFS_FS_SB_H__ +#define __EFS_FS_SB_H__ + +/* statfs() magic number for EFS */ +#define EFS_SUPER_MAGIC 0x414A53 + +/* EFS superblock magic numbers */ +#define EFS_MAGIC 0x072959 +#define EFS_NEWMAGIC 0x07295a + +#define IS_EFS_MAGIC(x) ((x == EFS_MAGIC) || (x == EFS_NEWMAGIC)) + +#define EFS_SUPER 1 +#define EFS_ROOTINODE 2 + +/* efs superblock on disk */ +struct efs_super { + __be32 fs_size; /* size of filesystem, in sectors */ + __be32 fs_firstcg; /* bb offset to first cg */ + __be32 fs_cgfsize; /* size of cylinder group in bb's */ + __be16 fs_cgisize; /* bb's of inodes per cylinder group */ + __be16 fs_sectors; /* sectors per track */ + __be16 fs_heads; /* heads per cylinder */ + __be16 fs_ncg; /* # of cylinder groups in filesystem */ + __be16 fs_dirty; /* fs needs to be fsck'd */ + __be32 fs_time; /* last super-block update */ + __be32 fs_magic; /* magic number */ + char fs_fname[6]; /* file system name */ + char fs_fpack[6]; /* file system pack name */ + __be32 fs_bmsize; /* size of bitmap in bytes */ + __be32 fs_tfree; /* total free data blocks */ + __be32 fs_tinode; /* total free inodes */ + __be32 fs_bmblock; /* bitmap location. */ + __be32 fs_replsb; /* Location of replicated superblock. */ + __be32 fs_lastialloc; /* last allocated inode */ + char fs_spare[20]; /* space for expansion - MUST BE ZERO */ + __be32 fs_checksum; /* checksum of volume portion of fs */ +}; + +/* efs superblock information in memory */ +struct efs_sb_info { + __u32 fs_magic; /* superblock magic number */ + __u32 fs_start; /* first block of filesystem */ + __u32 first_block; /* first data block in filesystem */ + __u32 total_blocks; /* total number of blocks in filesystem */ + __u32 group_size; /* # of blocks a group consists of */ + __u32 data_free; /* # of free data blocks */ + __u32 inode_free; /* # of free inodes */ + __u16 inode_blocks; /* # of blocks used for inodes in every grp */ + __u16 total_groups; /* # of groups */ +}; + +#endif /* __EFS_FS_SB_H__ */ + -- cgit v1.2.3-59-g8ed1b