1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
 2#ifndef __LINUX_ROMFS_FS_H
 3#define __LINUX_ROMFS_FS_H
 4
 5#include <linux/types.h>
 6#include <linux/fs.h>
 7
 8/* The basic structures of the romfs filesystem */
 9
10#define ROMBSIZE BLOCK_SIZE
11#define ROMBSBITS BLOCK_SIZE_BITS
12#define ROMBMASK (ROMBSIZE-1)
13#define ROMFS_MAGIC 0x7275
14
15#define ROMFS_MAXFN 128
16
17#define __mkw(h,l) (((h)&0x00ff)<< 8|((l)&0x00ff))
18#define __mkl(h,l) (((h)&0xffff)<<16|((l)&0xffff))
19#define __mk4(a,b,c,d) cpu_to_be32(__mkl(__mkw(a,b),__mkw(c,d)))
20#define ROMSB_WORD0 __mk4('-','r','o','m')
21#define ROMSB_WORD1 __mk4('1','f','s','-')
22
23/* On-disk "super block" */
24
25struct romfs_super_block {
26	__be32 word0;
27	__be32 word1;
28	__be32 size;
29	__be32 checksum;
30	char name[];		/* volume name */
31};
32
33/* On disk inode */
34
35struct romfs_inode {
36	__be32 next;		/* low 4 bits see ROMFH_ */
37	__be32 spec;
38	__be32 size;
39	__be32 checksum;
40	char name[];
41};
42
43#define ROMFH_TYPE 7
44#define ROMFH_HRD 0
45#define ROMFH_DIR 1
46#define ROMFH_REG 2
47#define ROMFH_SYM 3
48#define ROMFH_BLK 4
49#define ROMFH_CHR 5
50#define ROMFH_SCK 6
51#define ROMFH_FIF 7
52#define ROMFH_EXEC 8
53
54/* Alignment */
55
56#define ROMFH_SIZE 16
57#define ROMFH_PAD (ROMFH_SIZE-1)
58#define ROMFH_MASK (~ROMFH_PAD)
59
60#endif

 
 1#ifndef __LINUX_ROMFS_FS_H
 2#define __LINUX_ROMFS_FS_H
 3
 4#include <linux/types.h>
 5#include <linux/fs.h>
 6
 7/* The basic structures of the romfs filesystem */
 8
 9#define ROMBSIZE BLOCK_SIZE
10#define ROMBSBITS BLOCK_SIZE_BITS
11#define ROMBMASK (ROMBSIZE-1)
12#define ROMFS_MAGIC 0x7275
13
14#define ROMFS_MAXFN 128
15
16#define __mkw(h,l) (((h)&0x00ff)<< 8|((l)&0x00ff))
17#define __mkl(h,l) (((h)&0xffff)<<16|((l)&0xffff))
18#define __mk4(a,b,c,d) cpu_to_be32(__mkl(__mkw(a,b),__mkw(c,d)))
19#define ROMSB_WORD0 __mk4('-','r','o','m')
20#define ROMSB_WORD1 __mk4('1','f','s','-')
21
22/* On-disk "super block" */
23
24struct romfs_super_block {
25	__be32 word0;
26	__be32 word1;
27	__be32 size;
28	__be32 checksum;
29	char name[0];		/* volume name */
30};
31
32/* On disk inode */
33
34struct romfs_inode {
35	__be32 next;		/* low 4 bits see ROMFH_ */
36	__be32 spec;
37	__be32 size;
38	__be32 checksum;
39	char name[0];
40};
41
42#define ROMFH_TYPE 7
43#define ROMFH_HRD 0
44#define ROMFH_DIR 1
45#define ROMFH_REG 2
46#define ROMFH_SYM 3
47#define ROMFH_BLK 4
48#define ROMFH_CHR 5
49#define ROMFH_SCK 6
50#define ROMFH_FIF 7
51#define ROMFH_EXEC 8
52
53/* Alignment */
54
55#define ROMFH_SIZE 16
56#define ROMFH_PAD (ROMFH_SIZE-1)
57#define ROMFH_MASK (~ROMFH_PAD)
58
59#endif