#ifndef __LINUX_ROMFS_FS_H
  #define __LINUX_ROMFS_FS_H

  #include <linux/types.h>
  #include <linux/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)

  #endif