181 lines
4.5 KiB
C
181 lines
4.5 KiB
C
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/****************************************************************************
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****************************************************************************
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***
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*** This header was automatically generated from a Linux kernel header
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*** of the same name, to make information necessary for userspace to
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*** call into the kernel available to libc. It contains only constants,
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*** structures, and macros generated from the original header, and thus,
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*** contains no copyrightable information.
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***
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****************************************************************************
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****************************************************************************/
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#ifndef _LINUX_MSDOS_FS_H
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#define _LINUX_MSDOS_FS_H
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#include <linux/magic.h>
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#include <asm/byteorder.h>
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#define SECTOR_SIZE 512
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#define SECTOR_BITS 9
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#define MSDOS_DPB (MSDOS_DPS)
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#define MSDOS_DPB_BITS 4
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#define MSDOS_DPS (SECTOR_SIZE / sizeof(struct msdos_dir_entry))
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#define MSDOS_DPS_BITS 4
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#define CF_LE_W(v) le16_to_cpu(v)
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#define CF_LE_L(v) le32_to_cpu(v)
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#define CT_LE_W(v) cpu_to_le16(v)
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#define CT_LE_L(v) cpu_to_le32(v)
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#define MSDOS_ROOT_INO 1
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#define MSDOS_DIR_BITS 5
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#define FAT_MAX_DIR_ENTRIES (65536)
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#define FAT_MAX_DIR_SIZE (FAT_MAX_DIR_ENTRIES << MSDOS_DIR_BITS)
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#define ATTR_NONE 0
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#define ATTR_RO 1
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#define ATTR_HIDDEN 2
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#define ATTR_SYS 4
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#define ATTR_VOLUME 8
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#define ATTR_DIR 16
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#define ATTR_ARCH 32
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#define ATTR_UNUSED (ATTR_VOLUME | ATTR_ARCH | ATTR_SYS | ATTR_HIDDEN)
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#define ATTR_EXT (ATTR_RO | ATTR_HIDDEN | ATTR_SYS | ATTR_VOLUME)
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#define CASE_LOWER_BASE 8
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#define CASE_LOWER_EXT 16
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#define DELETED_FLAG 0xe5
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#define IS_FREE(n) (!*(n) || *(n) == DELETED_FLAG)
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#define MSDOS_VALID_MODE (S_IFREG | S_IFDIR | S_IRWXU | S_IRWXG | S_IRWXO)
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#define MSDOS_MKMODE(a, m) (m & (a & ATTR_RO ? S_IRUGO|S_IXUGO : S_IRWXUGO))
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#define MSDOS_NAME 11
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#define MSDOS_LONGNAME 256
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#define MSDOS_SLOTS 21
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#define MSDOS_DOT ". "
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#define MSDOS_DOTDOT ".. "
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#define FAT_VALID_MEDIA(x) ((0xF8 <= (x) && (x) <= 0xFF) || (x) == 0xF0)
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#define FAT_FIRST_ENT(s, x) ((MSDOS_SB(s)->fat_bits == 32 ? 0x0FFFFF00 : MSDOS_SB(s)->fat_bits == 16 ? 0xFF00 : 0xF00) | (x))
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#define FAT_START_ENT 2
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#define MAX_FAT12 0xFF4
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#define MAX_FAT16 0xFFF4
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#define MAX_FAT32 0x0FFFFFF6
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#define MAX_FAT(s) (MSDOS_SB(s)->fat_bits == 32 ? MAX_FAT32 : MSDOS_SB(s)->fat_bits == 16 ? MAX_FAT16 : MAX_FAT12)
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#define BAD_FAT12 0xFF7
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#define BAD_FAT16 0xFFF7
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#define BAD_FAT32 0x0FFFFFF7
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#define EOF_FAT12 0xFFF
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#define EOF_FAT16 0xFFFF
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#define EOF_FAT32 0x0FFFFFFF
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#define FAT_ENT_FREE (0)
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#define FAT_ENT_BAD (BAD_FAT32)
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#define FAT_ENT_EOF (EOF_FAT32)
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#define FAT_FSINFO_SIG1 0x41615252
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#define FAT_FSINFO_SIG2 0x61417272
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#define IS_FSINFO(x) (le32_to_cpu((x)->signature1) == FAT_FSINFO_SIG1 && le32_to_cpu((x)->signature2) == FAT_FSINFO_SIG2)
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#define VFAT_IOCTL_READDIR_BOTH _IOR('r', 1, struct dirent [2])
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#define VFAT_IOCTL_READDIR_SHORT _IOR('r', 2, struct dirent [2])
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#define FAT_IOCTL_GET_ATTRIBUTES _IOR('r', 0x10, __u32)
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#define FAT_IOCTL_SET_ATTRIBUTES _IOW('r', 0x11, __u32)
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#define VFAT_IOCTL_GET_VOLUME_ID _IOR('r', 0x12, __u32)
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#define VFAT_SFN_DISPLAY_LOWER 0x0001
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#define VFAT_SFN_DISPLAY_WIN95 0x0002
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#define VFAT_SFN_DISPLAY_WINNT 0x0004
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#define VFAT_SFN_CREATE_WIN95 0x0100
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#define VFAT_SFN_CREATE_WINNT 0x0200
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struct fat_boot_sector {
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__u8 ignored[3];
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__u8 system_id[8];
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__u8 sector_size[2];
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__u8 sec_per_clus;
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__le16 reserved;
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__u8 fats;
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__u8 dir_entries[2];
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__u8 sectors[2];
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__u8 media;
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__le16 fat_length;
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__le16 secs_track;
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__le16 heads;
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__le32 hidden;
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__le32 total_sect;
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__le32 fat32_length;
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__le16 flags;
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__u8 version[2];
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__le32 root_cluster;
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__le16 info_sector;
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__le16 backup_boot;
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__le16 reserved2[6];
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};
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struct fat_boot_fsinfo {
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__le32 signature1;
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__le32 reserved1[120];
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__le32 signature2;
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__le32 free_clusters;
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__le32 next_cluster;
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__le32 reserved2[4];
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};
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struct fat_boot_bsx {
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__u8 drive;
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__u8 reserved1;
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__u8 signature;
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__u8 vol_id[4];
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__u8 vol_label[11];
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__u8 type[8];
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};
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#define FAT16_BSX_OFFSET 36
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#define FAT32_BSX_OFFSET 64
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struct msdos_dir_entry {
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__u8 name[MSDOS_NAME];
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__u8 attr;
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__u8 lcase;
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__u8 ctime_cs;
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__le16 ctime;
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__le16 cdate;
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__le16 adate;
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__le16 starthi;
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__le16 time,date,start;
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__le32 size;
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};
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struct msdos_dir_slot {
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__u8 id;
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__u8 name0_4[10];
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__u8 attr;
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__u8 reserved;
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__u8 alias_checksum;
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__u8 name5_10[12];
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__le16 start;
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__u8 name11_12[4];
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};
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struct fat_slot_info {
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loff_t i_pos;
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loff_t slot_off;
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int nr_slots;
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struct msdos_dir_entry *de;
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struct buffer_head *bh;
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};
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#endif
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