sdk/lib/fslib/vfatlib/check/fsck.fat.h

   1 /* fsck.fat.h  -  Common data structures and global variables
   2
   3    Copyright (C) 1993 Werner Almesberger <werner.almesberger@lrc.di.epfl.ch>
   4    Copyright (C) 1998 Roman Hodek <Roman.Hodek@informatik.uni-erlangen.de>
   5    Copyright (C) 2008-2014 Daniel Baumann <mail@daniel-baumann.ch>
   6    Copyright (C) 2015 Andreas Bombe <aeb@debian.org>
   7
   8    This program is free software: you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation, either version 3 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program. If not, see <http://www.gnu.org/licenses/>.
  20
  21    The complete text of the GNU General Public License
  22    can be found in /usr/share/common-licenses/GPL-3 file.
  23 */
  24
  25 /* FAT32, VFAT, Atari format support, and various fixes additions May 1998
  26  * by Roman Hodek <Roman.Hodek@informatik.uni-erlangen.de> */
  27
  28 #ifndef _DOSFSCK_H
  29 #define _DOSFSCK_H
  30
  31 #ifndef __REACTOS__
  32 #include <sys/types.h>
  33 #include <fcntl.h>
  34 #include <stddef.h>
  35 #endif
  36 #include <stdint.h>
  37
  38 #ifdef __REACTOS__
  39 #ifdef _WIN32
  40
  41 typedef unsigned int __u32;
  42 typedef unsigned __int64 __u64;
  43
  44 #define le16toh(v) (v)
  45 #define le32toh(v) (v)
  46 #define htole16(v) (v)
  47 #define htole32(v) (v)
  48
  49 #endif
  50
  51 #ifdef _M_IX86
  52 #include "byteorder.h"
  53 #endif
  54
  55 #if __BYTE_ORDER == __BIG_ENDIAN
  56 #include "byteswap.h"
  57 #else
  58 #define le16toh(v) (v)
  59 #define le32toh(v) (v)
  60 #define htole16(v) (v)
  61 #define htole32(v) (v)
  62 #endif /* __BIG_ENDIAN */
  63
  64 #endif
  65
  66 #ifndef __REACTOS__
  67 #include "endian_compat.h"
  68 #else
  69 #ifndef offsetof
  70 #define offsetof(t,e)   ((int)&(((t *)0)->e))
  71 #endif
  72
  73 #include "rosglue.h"
  74 #endif
  75
  76 #include "msdos_fs.h"
  77
  78 #define VFAT_LN_ATTR (ATTR_RO | ATTR_HIDDEN | ATTR_SYS | ATTR_VOLUME)
  79
  80 #define FAT_STATE_DIRTY 0x01
  81
  82 #ifdef __REACTOS__
  83 #include <pshpack1.h>
  84 #endif
  85
  86 /* ++roman: Use own definition of boot sector structure -- the kernel headers'
  87  * name for it is msdos_boot_sector in 2.0 and fat_boot_sector in 2.1 ... */
  88 struct boot_sector {
  89     uint8_t ignored[3];         /* Boot strap short or near jump */
  90     uint8_t system_id[8];       /* Name - can be used to special case
  91                                    partition manager volumes */
  92     uint8_t sector_size[2];     /* bytes per logical sector */
  93     uint8_t cluster_size;       /* sectors/cluster */
  94     uint16_t reserved;          /* reserved sectors */
  95     uint8_t fats;               /* number of FATs */
  96     uint8_t dir_entries[2];     /* root directory entries */
  97     uint8_t sectors[2];         /* number of sectors */
  98     uint8_t media;              /* media code (unused) */
  99     uint16_t fat_length;        /* sectors/FAT */
 100     uint16_t secs_track;        /* sectors per track */
 101     uint16_t heads;             /* number of heads */
 102     uint32_t hidden;            /* hidden sectors (unused) */
 103     uint32_t total_sect;        /* number of sectors (if sectors == 0) */
 104
 105     /* The following fields are only used by FAT32 */
 106     uint32_t fat32_length;      /* sectors/FAT */
 107     uint16_t flags;             /* bit 8: fat mirroring, low 4: active fat */
 108     uint8_t version[2];         /* major, minor filesystem version */
 109     uint32_t root_cluster;      /* first cluster in root directory */
 110     uint16_t info_sector;       /* filesystem info sector */
 111     uint16_t backup_boot;       /* backup boot sector */
 112     uint8_t reserved2[12];      /* Unused */
 113
 114     uint8_t drive_number;       /* Logical Drive Number */
 115     uint8_t reserved3;          /* Unused */
 116
 117     uint8_t extended_sig;       /* Extended Signature (0x29) */
 118     uint32_t serial;            /* Serial number */
 119     uint8_t label[11];          /* FS label */
 120     uint8_t fs_type[8];         /* FS Type */
 121
 122     /* fill up to 512 bytes */
 123     uint8_t junk[422];
 124 } __attribute__ ((packed));
 125
 126 struct boot_sector_16 {
 127     uint8_t ignored[3];         /* Boot strap short or near jump */
 128     uint8_t system_id[8];       /* Name - can be used to special case
 129                                    partition manager volumes */
 130     uint8_t sector_size[2];     /* bytes per logical sector */
 131     uint8_t cluster_size;       /* sectors/cluster */
 132     uint16_t reserved;          /* reserved sectors */
 133     uint8_t fats;               /* number of FATs */
 134     uint8_t dir_entries[2];     /* root directory entries */
 135     uint8_t sectors[2];         /* number of sectors */
 136     uint8_t media;              /* media code (unused) */
 137     uint16_t fat_length;        /* sectors/FAT */
 138     uint16_t secs_track;        /* sectors per track */
 139     uint16_t heads;             /* number of heads */
 140     uint32_t hidden;            /* hidden sectors (unused) */
 141     uint32_t total_sect;        /* number of sectors (if sectors == 0) */
 142
 143     uint8_t drive_number;       /* Logical Drive Number */
 144     uint8_t reserved2;          /* Unused */
 145
 146     uint8_t extended_sig;       /* Extended Signature (0x29) */
 147     uint32_t serial;            /* Serial number */
 148     uint8_t label[11];          /* FS label */
 149     uint8_t fs_type[8];         /* FS Type */
 150
 151     /* fill up to 512 bytes */
 152     uint8_t junk[450];
 153 } __attribute__ ((packed));
 154
 155 struct info_sector {
 156     uint32_t magic;             /* Magic for info sector ('RRaA') */
 157     uint8_t reserved1[480];
 158     uint32_t signature;         /* 0x61417272 ('rrAa') */
 159     uint32_t free_clusters;     /* Free cluster count.  -1 if unknown */
 160     uint32_t next_cluster;      /* Most recently allocated cluster. */
 161     uint8_t reserved2[12];
 162     uint32_t boot_sign;
 163 };
 164
 165 typedef struct {
 166     uint8_t name[MSDOS_NAME];   /* name including extension */
 167     uint8_t attr;               /* attribute bits */
 168     uint8_t lcase;              /* Case for base and extension */
 169     uint8_t ctime_ms;           /* Creation time, milliseconds */
 170     uint16_t ctime;             /* Creation time */
 171     uint16_t cdate;             /* Creation date */
 172     uint16_t adate;             /* Last access date */
 173     uint16_t starthi;           /* High 16 bits of cluster in FAT32 */
 174     uint16_t time, date, start; /* time, date and first cluster */
 175     uint32_t size;              /* file size (in bytes) */
 176 } __attribute__ ((packed)) DIR_ENT;
 177
 178 #ifdef __REACTOS__
 179 #include <poppack.h>
 180 #endif
 181
 182 typedef struct _dos_file {
 183     DIR_ENT dir_ent;
 184     char *lfn;
 185     off_t offset;
 186     off_t lfn_offset;
 187     struct _dos_file *parent;   /* parent directory */
 188     struct _dos_file *next;     /* next entry */
 189     struct _dos_file *first;    /* first entry (directory only) */
 190 } DOS_FILE;
 191
 192 typedef struct {
 193     uint32_t value;
 194     uint32_t reserved;
 195 } FAT_ENTRY;
 196
 197 typedef struct {
 198     int nfats;
 199     off_t fat_start;
 200     off_t fat_size;             /* unit is bytes */
 201     unsigned int fat_bits;      /* size of a FAT entry */
 202     unsigned int eff_fat_bits;  /* # of used bits in a FAT entry */
 203     uint32_t root_cluster;      /* 0 for old-style root dir */
 204     off_t root_start;
 205     unsigned int root_entries;
 206     off_t data_start;
 207     unsigned int cluster_size;
 208     uint32_t data_clusters;     /* not including two reserved cluster numbers */
 209     off_t fsinfo_start;         /* 0 if not present */
 210     long free_clusters;
 211     off_t backupboot_start;     /* 0 if not present */
 212     unsigned char *fat;
 213     DOS_FILE **cluster_owner;
 214     char *label;
 215 } DOS_FS;
 216
 217 #ifndef __REACTOS__
 218 extern int interactive, rw, list, verbose, test, write_immed;
 219 extern int atari_format;
 220 extern unsigned n_files;
 221 extern void *mem_queue;
 222 #endif
 223
 224 /* value to use as end-of-file marker */
 225 #define FAT_EOF(fs)     ((atari_format ? 0xfff : 0xff8) | FAT_EXTD(fs))
 226 #define FAT_IS_EOF(fs,v) ((uint32_t)(v) >= (0xff8|FAT_EXTD(fs)))
 227 /* value to mark bad clusters */
 228 #define FAT_BAD(fs)     (0xff7 | FAT_EXTD(fs))
 229 /* range of values used for bad clusters */
 230 #define FAT_MIN_BAD(fs) ((atari_format ? 0xff0 : 0xff7) | FAT_EXTD(fs))
 231 #define FAT_MAX_BAD(fs) ((atari_format ? 0xff7 : 0xff7) | FAT_EXTD(fs))
 232 #define FAT_IS_BAD(fs,v) ((v) >= FAT_MIN_BAD(fs) && (v) <= FAT_MAX_BAD(fs))
 233
 234 /* return -16 as a number with fs->fat_bits bits */
 235 #define FAT_EXTD(fs)    (((1 << fs->eff_fat_bits)-1) & ~0xf)
 236
 237 /* marker for files with no 8.3 name */
 238 #define FAT_NO_83NAME 32
 239
 240 #endif