/* 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[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