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/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
#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[]; /* volume name */
};
/* On disk inode */
struct romfs_inode {
__be32 next; /* low 4 bits see ROMFH_ */
__be32 spec;
__be32 size;
__be32 checksum;
char name[];
};
#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
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