#ifndef _LINUX_MSDOS_FS_H
#define _LINUX_MSDOS_FS_H
-#include <linux/types.h>
-#include <linux/magic.h>
-#include <asm/byteorder.h>
+#include <uapi/linux/msdos_fs.h>
-/*
- * The MS-DOS filesystem constants/structures
- */
-
-#define SECTOR_SIZE 512 /* sector size (bytes) */
-#define SECTOR_BITS 9 /* log2(SECTOR_SIZE) */
-#define MSDOS_DPB (MSDOS_DPS) /* dir entries per block */
-#define MSDOS_DPB_BITS 4 /* log2(MSDOS_DPB) */
-#define MSDOS_DPS (SECTOR_SIZE / sizeof(struct msdos_dir_entry))
-#define MSDOS_DPS_BITS 4 /* log2(MSDOS_DPS) */
-#define MSDOS_LONGNAME 256 /* maximum name length */
-#define CF_LE_W(v) le16_to_cpu(v)
-#define CF_LE_L(v) le32_to_cpu(v)
-#define CT_LE_W(v) cpu_to_le16(v)
-#define CT_LE_L(v) cpu_to_le32(v)
-
-#define MSDOS_ROOT_INO 1 /* The root inode number */
-#define MSDOS_FSINFO_INO 2 /* Used for managing the FSINFO block */
-
-#define MSDOS_DIR_BITS 5 /* log2(sizeof(struct msdos_dir_entry)) */
-
-/* directory limit */
-#define FAT_MAX_DIR_ENTRIES (65536)
-#define FAT_MAX_DIR_SIZE (FAT_MAX_DIR_ENTRIES << MSDOS_DIR_BITS)
-
-#define ATTR_NONE 0 /* no attribute bits */
-#define ATTR_RO 1 /* read-only */
-#define ATTR_HIDDEN 2 /* hidden */
-#define ATTR_SYS 4 /* system */
-#define ATTR_VOLUME 8 /* volume label */
-#define ATTR_DIR 16 /* directory */
-#define ATTR_ARCH 32 /* archived */
-
-/* attribute bits that are copied "as is" */
-#define ATTR_UNUSED (ATTR_VOLUME | ATTR_ARCH | ATTR_SYS | ATTR_HIDDEN)
-/* bits that are used by the Windows 95/Windows NT extended FAT */
-#define ATTR_EXT (ATTR_RO | ATTR_HIDDEN | ATTR_SYS | ATTR_VOLUME)
-
-#define CASE_LOWER_BASE 8 /* base is lower case */
-#define CASE_LOWER_EXT 16 /* extension is lower case */
-
-#define DELETED_FLAG 0xe5 /* marks file as deleted when in name[0] */
-#define IS_FREE(n) (!*(n) || *(n) == DELETED_FLAG)
-
-#define FAT_LFN_LEN 255 /* maximum long name length */
-#define MSDOS_NAME 11 /* maximum name length */
-#define MSDOS_SLOTS 21 /* max # of slots for short and long names */
-#define MSDOS_DOT ". " /* ".", padded to MSDOS_NAME chars */
-#define MSDOS_DOTDOT ".. " /* "..", padded to MSDOS_NAME chars */
-
-#define FAT_FIRST_ENT(s, x) ((MSDOS_SB(s)->fat_bits == 32 ? 0x0FFFFF00 : \
- MSDOS_SB(s)->fat_bits == 16 ? 0xFF00 : 0xF00) | (x))
-
-/* start of data cluster's entry (number of reserved clusters) */
-#define FAT_START_ENT 2
-
-/* maximum number of clusters */
-#define MAX_FAT12 0xFF4
-#define MAX_FAT16 0xFFF4
-#define MAX_FAT32 0x0FFFFFF6
-#define MAX_FAT(s) (MSDOS_SB(s)->fat_bits == 32 ? MAX_FAT32 : \
- MSDOS_SB(s)->fat_bits == 16 ? MAX_FAT16 : MAX_FAT12)
-
-/* bad cluster mark */
-#define BAD_FAT12 0xFF7
-#define BAD_FAT16 0xFFF7
-#define BAD_FAT32 0x0FFFFFF7
-
-/* standard EOF */
-#define EOF_FAT12 0xFFF
-#define EOF_FAT16 0xFFFF
-#define EOF_FAT32 0x0FFFFFFF
-
-#define FAT_ENT_FREE (0)
-#define FAT_ENT_BAD (BAD_FAT32)
-#define FAT_ENT_EOF (EOF_FAT32)
-
-#define FAT_FSINFO_SIG1 0x41615252
-#define FAT_FSINFO_SIG2 0x61417272
-#define IS_FSINFO(x) (le32_to_cpu((x)->signature1) == FAT_FSINFO_SIG1 \
- && le32_to_cpu((x)->signature2) == FAT_FSINFO_SIG2)
-
-struct __fat_dirent {
- long d_ino;
- __kernel_off_t d_off;
- unsigned short d_reclen;
- char d_name[256]; /* We must not include limits.h! */
-};
-
-/*
- * ioctl commands
- */
-#define VFAT_IOCTL_READDIR_BOTH _IOR('r', 1, struct __fat_dirent[2])
-#define VFAT_IOCTL_READDIR_SHORT _IOR('r', 2, struct __fat_dirent[2])
-/* <linux/videotext.h> has used 0x72 ('r') in collision, so skip a few */
-#define FAT_IOCTL_GET_ATTRIBUTES _IOR('r', 0x10, __u32)
-#define FAT_IOCTL_SET_ATTRIBUTES _IOW('r', 0x11, __u32)
-
-struct fat_boot_sector {
- __u8 ignored[3]; /* Boot strap short or near jump */
- __u8 system_id[8]; /* Name - can be used to special case
- partition manager volumes */
- __u8 sector_size[2]; /* bytes per logical sector */
- __u8 sec_per_clus; /* sectors/cluster */
- __le16 reserved; /* reserved sectors */
- __u8 fats; /* number of FATs */
- __u8 dir_entries[2]; /* root directory entries */
- __u8 sectors[2]; /* number of sectors */
- __u8 media; /* media code */
- __le16 fat_length; /* sectors/FAT */
- __le16 secs_track; /* sectors per track */
- __le16 heads; /* number of heads */
- __le32 hidden; /* hidden sectors (unused) */
- __le32 total_sect; /* number of sectors (if sectors == 0) */
-
- /* The following fields are only used by FAT32 */
- __le32 fat32_length; /* sectors/FAT */
- __le16 flags; /* bit 8: fat mirroring, low 4: active fat */
- __u8 version[2]; /* major, minor filesystem version */
- __le32 root_cluster; /* first cluster in root directory */
- __le16 info_sector; /* filesystem info sector */
- __le16 backup_boot; /* backup boot sector */
- __le16 reserved2[6]; /* Unused */
-};
-
-struct fat_boot_fsinfo {
- __le32 signature1; /* 0x41615252L */
- __le32 reserved1[120]; /* Nothing as far as I can tell */
- __le32 signature2; /* 0x61417272L */
- __le32 free_clusters; /* Free cluster count. -1 if unknown */
- __le32 next_cluster; /* Most recently allocated cluster */
- __le32 reserved2[4];
-};
-
-struct msdos_dir_entry {
- __u8 name[MSDOS_NAME];/* name and extension */
- __u8 attr; /* attribute bits */
- __u8 lcase; /* Case for base and extension */
- __u8 ctime_cs; /* Creation time, centiseconds (0-199) */
- __le16 ctime; /* Creation time */
- __le16 cdate; /* Creation date */
- __le16 adate; /* Last access date */
- __le16 starthi; /* High 16 bits of cluster in FAT32 */
- __le16 time,date,start;/* time, date and first cluster */
- __le32 size; /* file size (in bytes) */
-};
-
-/* Up to 13 characters of the name */
-struct msdos_dir_slot {
- __u8 id; /* sequence number for slot */
- __u8 name0_4[10]; /* first 5 characters in name */
- __u8 attr; /* attribute byte */
- __u8 reserved; /* always 0 */
- __u8 alias_checksum; /* checksum for 8.3 alias */
- __u8 name5_10[12]; /* 6 more characters in name */
- __le16 start; /* starting cluster number, 0 in long slots */
- __u8 name11_12[4]; /* last 2 characters in name */
-};
-
-#ifdef __KERNEL__
/* media of boot sector */
static inline int fat_valid_media(u8 media)
{
return 0xf8 <= media || media == 0xf0;
}
-#endif /* !__KERNEL__ */
#endif /* !_LINUX_MSDOS_FS_H */
projects / cascardo / linux.git / blobdiff