1 #ifndef __LINUX_ROMFS_FS_H
2 #define __LINUX_ROMFS_FS_H
4 /* The basic structures of the romfs filesystem */
6 #define ROMBSIZE BLOCK_SIZE
7 #define ROMBSBITS BLOCK_SIZE_BITS
8 #define ROMBMASK (ROMBSIZE-1)
9 #define ROMFS_MAGIC 0x7275
11 #define ROMFS_MAXFN 128
13 #define __mkw(h,l) (((h)&0x00ff)<< 8|((l)&0x00ff))
14 #define __mkl(h,l) (((h)&0xffff)<<16|((l)&0xffff))
15 #define __mk4(a,b,c,d) cpu_to_be32(__mkl(__mkw(a,b),__mkw(c,d)))
16 #define ROMSB_WORD0 __mk4('-','r','o','m')
17 #define ROMSB_WORD1 __mk4('1','f','s','-')
19 /* On-disk "super block" */
21 struct romfs_super_block {
26 char name[0]; /* volume name */
32 __be32 next; /* low 4 bits see ROMFH_ */
53 #define ROMFH_PAD (ROMFH_SIZE-1)
54 #define ROMFH_MASK (~ROMFH_PAD)