diff options
| author | Jonathan Herman <hermanjl@cs.unc.edu> | 2013-01-22 10:38:37 -0500 |
|---|---|---|
| committer | Jonathan Herman <hermanjl@cs.unc.edu> | 2013-01-22 10:38:37 -0500 |
| commit | fcc9d2e5a6c89d22b8b773a64fb4ad21ac318446 (patch) | |
| tree | a57612d1888735a2ec7972891b68c1ac5ec8faea /include/linux/romfs_fs.h | |
| parent | 8dea78da5cee153b8af9c07a2745f6c55057fe12 (diff) | |
Diffstat (limited to 'include/linux/romfs_fs.h')
| -rw-r--r-- | include/linux/romfs_fs.h | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/include/linux/romfs_fs.h b/include/linux/romfs_fs.h new file mode 100644 index 00000000000..5f57f93b284 --- /dev/null +++ b/include/linux/romfs_fs.h | |||
| @@ -0,0 +1,59 @@ | |||
| 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 | |||
| 24 | struct 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 | |||
| 34 | struct 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 | ||
