linux-hardened/include/linux/romfs_fs.h
Linus Torvalds 1da177e4c3 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!
2005-04-16 15:20:36 -07:00

61 lines
1.2 KiB
C

#ifndef __LINUX_ROMFS_FS_H
#define __LINUX_ROMFS_FS_H
/* The basic structures of the romfs filesystem */
#define ROMBSIZE BLOCK_SIZE
#define ROMBSBITS BLOCK_SIZE_BITS
#define ROMBMASK (ROMBSIZE-1)
#define ROMFS_MAGIC 0x7275
#define ROMFS_MAXFN 128
#define __mkw(h,l) (((h)&0x00ff)<< 8|((l)&0x00ff))
#define __mkl(h,l) (((h)&0xffff)<<16|((l)&0xffff))
#define __mk4(a,b,c,d) cpu_to_be32(__mkl(__mkw(a,b),__mkw(c,d)))
#define ROMSB_WORD0 __mk4('-','r','o','m')
#define ROMSB_WORD1 __mk4('1','f','s','-')
/* On-disk "super block" */
struct romfs_super_block {
__be32 word0;
__be32 word1;
__be32 size;
__be32 checksum;
char name[0]; /* volume name */
};
/* On disk inode */
struct romfs_inode {
__be32 next; /* low 4 bits see ROMFH_ */
__be32 spec;
__be32 size;
__be32 checksum;
char name[0];
};
#define ROMFH_TYPE 7
#define ROMFH_HRD 0
#define ROMFH_DIR 1
#define ROMFH_REG 2
#define ROMFH_SYM 3
#define ROMFH_BLK 4
#define ROMFH_CHR 5
#define ROMFH_SCK 6
#define ROMFH_FIF 7
#define ROMFH_EXEC 8
/* Alignment */
#define ROMFH_SIZE 16
#define ROMFH_PAD (ROMFH_SIZE-1)
#define ROMFH_MASK (~ROMFH_PAD)
#ifdef __KERNEL__
/* Not much now */
#endif /* __KERNEL__ */
#endif