1/**************************************************************************** 2 **************************************************************************** 3 *** 4 *** This header was automatically generated from a Linux kernel header 5 *** of the same name, to make information necessary for userspace to 6 *** call into the kernel available to libc. It contains only constants, 7 *** structures, and macros generated from the original header, and thus, 8 *** contains no copyrightable information. 9 *** 10 **************************************************************************** 11 ****************************************************************************/ 12#ifndef _LINUX_MSDOS_FS_H 13#define _LINUX_MSDOS_FS_H 14 15#include <linux/magic.h> 16 17#include <asm/byteorder.h> 18 19#define SECTOR_SIZE 512 20#define SECTOR_BITS 9 21#define MSDOS_DPB (MSDOS_DPS) 22#define MSDOS_DPB_BITS 4 23#define MSDOS_DPS (SECTOR_SIZE / sizeof(struct msdos_dir_entry)) 24#define MSDOS_DPS_BITS 4 25#define CF_LE_W(v) le16_to_cpu(v) 26#define CF_LE_L(v) le32_to_cpu(v) 27#define CT_LE_W(v) cpu_to_le16(v) 28#define CT_LE_L(v) cpu_to_le32(v) 29 30#define MSDOS_ROOT_INO 1 31#define MSDOS_DIR_BITS 5 32 33#define FAT_MAX_DIR_ENTRIES (65536) 34#define FAT_MAX_DIR_SIZE (FAT_MAX_DIR_ENTRIES << MSDOS_DIR_BITS) 35 36#define ATTR_NONE 0 37#define ATTR_RO 1 38#define ATTR_HIDDEN 2 39#define ATTR_SYS 4 40#define ATTR_VOLUME 8 41#define ATTR_DIR 16 42#define ATTR_ARCH 32 43 44#define ATTR_UNUSED (ATTR_VOLUME | ATTR_ARCH | ATTR_SYS | ATTR_HIDDEN) 45 46#define ATTR_EXT (ATTR_RO | ATTR_HIDDEN | ATTR_SYS | ATTR_VOLUME) 47 48#define CASE_LOWER_BASE 8 49#define CASE_LOWER_EXT 16 50 51#define DELETED_FLAG 0xe5 52#define IS_FREE(n) (!*(n) || *(n) == DELETED_FLAG) 53 54#define MSDOS_VALID_MODE (S_IFREG | S_IFDIR | S_IRWXU | S_IRWXG | S_IRWXO) 55 56#define MSDOS_MKMODE(a, m) (m & (a & ATTR_RO ? S_IRUGO|S_IXUGO : S_IRWXUGO)) 57 58#define MSDOS_NAME 11 59#define MSDOS_LONGNAME 256 60#define MSDOS_SLOTS 21 61#define MSDOS_DOT ". " 62#define MSDOS_DOTDOT ".. " 63 64#define FAT_VALID_MEDIA(x) ((0xF8 <= (x) && (x) <= 0xFF) || (x) == 0xF0) 65#define FAT_FIRST_ENT(s, x) ((MSDOS_SB(s)->fat_bits == 32 ? 0x0FFFFF00 : MSDOS_SB(s)->fat_bits == 16 ? 0xFF00 : 0xF00) | (x)) 66 67#define FAT_START_ENT 2 68 69#define MAX_FAT12 0xFF4 70#define MAX_FAT16 0xFFF4 71#define MAX_FAT32 0x0FFFFFF6 72#define MAX_FAT(s) (MSDOS_SB(s)->fat_bits == 32 ? MAX_FAT32 : MSDOS_SB(s)->fat_bits == 16 ? MAX_FAT16 : MAX_FAT12) 73 74#define BAD_FAT12 0xFF7 75#define BAD_FAT16 0xFFF7 76#define BAD_FAT32 0x0FFFFFF7 77 78#define EOF_FAT12 0xFFF 79#define EOF_FAT16 0xFFFF 80#define EOF_FAT32 0x0FFFFFFF 81 82#define FAT_ENT_FREE (0) 83#define FAT_ENT_BAD (BAD_FAT32) 84#define FAT_ENT_EOF (EOF_FAT32) 85 86#define FAT_FSINFO_SIG1 0x41615252 87#define FAT_FSINFO_SIG2 0x61417272 88#define IS_FSINFO(x) (le32_to_cpu((x)->signature1) == FAT_FSINFO_SIG1 && le32_to_cpu((x)->signature2) == FAT_FSINFO_SIG2) 89 90#define VFAT_IOCTL_READDIR_BOTH _IOR('r', 1, struct dirent [2]) 91#define VFAT_IOCTL_READDIR_SHORT _IOR('r', 2, struct dirent [2]) 92 93#define FAT_IOCTL_GET_ATTRIBUTES _IOR('r', 0x10, __u32) 94#define FAT_IOCTL_SET_ATTRIBUTES _IOW('r', 0x11, __u32) 95#define VFAT_IOCTL_GET_VOLUME_ID _IOR('r', 0x12, __u32) 96 97#define VFAT_SFN_DISPLAY_LOWER 0x0001 98#define VFAT_SFN_DISPLAY_WIN95 0x0002 99#define VFAT_SFN_DISPLAY_WINNT 0x0004 100#define VFAT_SFN_CREATE_WIN95 0x0100 101#define VFAT_SFN_CREATE_WINNT 0x0200 102 103struct fat_boot_sector { 104 __u8 ignored[3]; 105 __u8 system_id[8]; 106 __u8 sector_size[2]; 107 __u8 sec_per_clus; 108 __le16 reserved; 109 __u8 fats; 110 __u8 dir_entries[2]; 111 __u8 sectors[2]; 112 __u8 media; 113 __le16 fat_length; 114 __le16 secs_track; 115 __le16 heads; 116 __le32 hidden; 117 __le32 total_sect; 118 119 __le32 fat32_length; 120 __le16 flags; 121 __u8 version[2]; 122 __le32 root_cluster; 123 __le16 info_sector; 124 __le16 backup_boot; 125 __le16 reserved2[6]; 126}; 127 128struct fat_boot_fsinfo { 129 __le32 signature1; 130 __le32 reserved1[120]; 131 __le32 signature2; 132 __le32 free_clusters; 133 __le32 next_cluster; 134 __le32 reserved2[4]; 135}; 136 137struct fat_boot_bsx { 138 __u8 drive; 139 __u8 reserved1; 140 __u8 signature; 141 __u8 vol_id[4]; 142 __u8 vol_label[11]; 143 __u8 type[8]; 144}; 145#define FAT16_BSX_OFFSET 36 146#define FAT32_BSX_OFFSET 64 147 148struct msdos_dir_entry { 149 __u8 name[MSDOS_NAME]; 150 __u8 attr; 151 __u8 lcase; 152 __u8 ctime_cs; 153 __le16 ctime; 154 __le16 cdate; 155 __le16 adate; 156 __le16 starthi; 157 __le16 time,date,start; 158 __le32 size; 159}; 160 161struct msdos_dir_slot { 162 __u8 id; 163 __u8 name0_4[10]; 164 __u8 attr; 165 __u8 reserved; 166 __u8 alias_checksum; 167 __u8 name5_10[12]; 168 __le16 start; 169 __u8 name11_12[4]; 170}; 171 172struct fat_slot_info { 173 loff_t i_pos; 174 loff_t slot_off; 175 int nr_slots; 176 struct msdos_dir_entry *de; 177 struct buffer_head *bh; 178}; 179 180#endif 181