1 /* 2 * This header was generated from the Linux kernel headers by update_headers.py, 3 * to provide necessary information from kernel to userspace, such as constants, 4 * structures, and macros, and thus, contains no copyrightable information. 5 */ 6 #ifndef _UAPI_LINUX_MSDOS_FS_H 7 #define _UAPI_LINUX_MSDOS_FS_H 8 #include <linux/types.h> 9 #include <linux/magic.h> 10 #include <asm/byteorder.h> 11 #ifndef SECTOR_SIZE 12 #define SECTOR_SIZE 512 13 #endif 14 #define SECTOR_BITS 9 15 #define MSDOS_DPB (MSDOS_DPS) 16 #define MSDOS_DPB_BITS 4 17 #define MSDOS_DPS (SECTOR_SIZE / sizeof(struct msdos_dir_entry)) 18 #define MSDOS_DPS_BITS 4 19 #define MSDOS_LONGNAME 256 20 #define CF_LE_W(v) le16_to_cpu(v) 21 #define CF_LE_L(v) le32_to_cpu(v) 22 #define CT_LE_W(v) cpu_to_le16(v) 23 #define CT_LE_L(v) cpu_to_le32(v) 24 #define MSDOS_ROOT_INO 1 25 #define MSDOS_FSINFO_INO 2 26 #define MSDOS_DIR_BITS 5 27 #define FAT_MAX_DIR_ENTRIES (65536) 28 #define FAT_MAX_DIR_SIZE (FAT_MAX_DIR_ENTRIES << MSDOS_DIR_BITS) 29 #define ATTR_NONE 0 30 #define ATTR_RO 1 31 #define ATTR_HIDDEN 2 32 #define ATTR_SYS 4 33 #define ATTR_VOLUME 8 34 #define ATTR_DIR 16 35 #define ATTR_ARCH 32 36 #define ATTR_UNUSED (ATTR_VOLUME | ATTR_ARCH | ATTR_SYS | ATTR_HIDDEN) 37 #define ATTR_EXT (ATTR_RO | ATTR_HIDDEN | ATTR_SYS | ATTR_VOLUME) 38 #define CASE_LOWER_BASE 8 39 #define CASE_LOWER_EXT 16 40 #define DELETED_FLAG 0xe5 41 #define IS_FREE(n) (!*(n) || *(n) == DELETED_FLAG) 42 #define FAT_LFN_LEN 255 43 #define MSDOS_NAME 11 44 #define MSDOS_SLOTS 21 45 #define MSDOS_DOT ". " 46 #define MSDOS_DOTDOT ".. " 47 #define FAT_FIRST_ENT(s, x) ((MSDOS_SB(s)->fat_bits == 32 ? 0x0FFFFF00 : \ 48 MSDOS_SB(s)->fat_bits == 16 ? 0xFF00 : 0xF00) | (x)) 49 #define FAT_START_ENT 2 50 #define MAX_FAT12 0xFF4 51 #define MAX_FAT16 0xFFF4 52 #define MAX_FAT32 0x0FFFFFF6 53 #define MAX_FAT(s) (MSDOS_SB(s)->fat_bits == 32 ? MAX_FAT32 : \ 54 MSDOS_SB(s)->fat_bits == 16 ? MAX_FAT16 : MAX_FAT12) 55 #define BAD_FAT12 0xFF7 56 #define BAD_FAT16 0xFFF7 57 #define BAD_FAT32 0x0FFFFFF7 58 #define EOF_FAT12 0xFFF 59 #define EOF_FAT16 0xFFFF 60 #define EOF_FAT32 0x0FFFFFFF 61 #define FAT_ENT_FREE (0) 62 #define FAT_ENT_BAD (BAD_FAT32) 63 #define FAT_ENT_EOF (EOF_FAT32) 64 #define FAT_FSINFO_SIG1 0x41615252 65 #define FAT_FSINFO_SIG2 0x61417272 66 #define IS_FSINFO(x) (le32_to_cpu((x)->signature1) == FAT_FSINFO_SIG1 \ 67 && le32_to_cpu((x)->signature2) == FAT_FSINFO_SIG2) 68 #define FAT_STATE_DIRTY 0x01 69 struct __fat_dirent { 70 long d_ino; 71 __kernel_off_t d_off; 72 unsigned short d_reclen; 73 char d_name[256]; 74 }; 75 #define VFAT_IOCTL_READDIR_BOTH _IOR('r', 1, struct __fat_dirent[2]) 76 #define VFAT_IOCTL_READDIR_SHORT _IOR('r', 2, struct __fat_dirent[2]) 77 #define FAT_IOCTL_GET_ATTRIBUTES _IOR('r', 0x10, __u32) 78 #define FAT_IOCTL_SET_ATTRIBUTES _IOW('r', 0x11, __u32) 79 #define FAT_IOCTL_GET_VOLUME_ID _IOR('r', 0x13, __u32) 80 struct fat_boot_sector { 81 __u8 ignored[3]; 82 __u8 system_id[8]; 83 __u8 sector_size[2]; 84 __u8 sec_per_clus; 85 __le16 reserved; 86 __u8 fats; 87 __u8 dir_entries[2]; 88 __u8 sectors[2]; 89 __u8 media; 90 __le16 fat_length; 91 __le16 secs_track; 92 __le16 heads; 93 __le32 hidden; 94 __le32 total_sect; 95 union { 96 struct { 97 98 __u8 drive_number; 99 __u8 state; 100 __u8 signature; 101 __u8 vol_id[4]; 102 __u8 vol_label[11]; 103 __u8 fs_type[8]; 104 105 } fat16; 106 struct { 107 108 __le32 length; 109 __le16 flags; 110 __u8 version[2]; 111 __le32 root_cluster; 112 __le16 info_sector; 113 __le16 backup_boot; 114 __le16 reserved2[6]; 115 116 __u8 drive_number; 117 __u8 state; 118 __u8 signature; 119 __u8 vol_id[4]; 120 __u8 vol_label[11]; 121 __u8 fs_type[8]; 122 123 } fat32; 124 }; 125 }; 126 struct fat_boot_fsinfo { 127 __le32 signature1; 128 __le32 reserved1[120]; 129 __le32 signature2; 130 __le32 free_clusters; 131 __le32 next_cluster; 132 __le32 reserved2[4]; 133 }; 134 struct msdos_dir_entry { 135 __u8 name[MSDOS_NAME]; 136 __u8 attr; 137 __u8 lcase; 138 __u8 ctime_cs; 139 __le16 ctime; 140 __le16 cdate; 141 __le16 adate; 142 __le16 starthi; 143 __le16 time,date,start; 144 __le32 size; 145 }; 146 struct msdos_dir_slot { 147 __u8 id; 148 __u8 name0_4[10]; 149 __u8 attr; 150 __u8 reserved; 151 __u8 alias_checksum; 152 __u8 name5_10[12]; 153 __le16 start; 154 __u8 name11_12[4]; 155 }; 156 #endif 157