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188 lines
5.3 KiB
C
188 lines
5.3 KiB
C
/* dosfsck.h - Common data structures and global variables */
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/* Written 1993 by Werner Almesberger */
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/* FAT32, VFAT, Atari format support, and various fixes additions May 1998
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* by Roman Hodek <Roman.Hodek@informatik.uni-erlangen.de> */
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#ifndef _DOSFSCK_H
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#define _DOSFSCK_H
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//#include "types.h"
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#ifdef _WIN32
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typedef unsigned char __u8;
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typedef unsigned short __u16;
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typedef unsigned int __u32;
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typedef unsigned __int64 __u64;
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typedef unsigned short __le16;
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typedef unsigned int __le32;
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typedef __int64 loff_t;
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typedef __int64 ll_t;
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#define CF_LE_W(v) (v)
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#define CF_LE_L(v) (v)
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#define CT_LE_W(v) (v)
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#define CT_LE_L(v) (v)
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#endif
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#ifdef _M_IX86
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#include "byteorder.h"
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#endif
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#include "msdos_fs.h"
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#if 0
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#undef CF_LE_W
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#undef CF_LE_L
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#undef CT_LE_W
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#undef CT_LE_L
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#endif
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#if __BYTE_ORDER == __BIG_ENDIAN
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#include "byteswap.h"
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#if 0
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#define CF_LE_W(v) bswap_16(v)
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#define CF_LE_L(v) bswap_32(v)
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#define CT_LE_W(v) CF_LE_W(v)
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#define CT_LE_L(v) CF_LE_L(v)
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#endif
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#else
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#define CF_LE_W(v) (v)
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#define CF_LE_L(v) (v)
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#define CT_LE_W(v) (v)
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#define CT_LE_L(v) (v)
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#endif /* __BIG_ENDIAN */
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#define VFAT_LN_ATTR (ATTR_RO | ATTR_HIDDEN | ATTR_SYS | ATTR_VOLUME)
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#include <pshpack1.h>
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/* ++roman: Use own definition of boot sector structure -- the kernel headers'
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* name for it is msdos_boot_sector in 2.0 and fat_boot_sector in 2.1 ... */
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struct boot_sector {
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__u8 ignored[3]; /* Boot strap short or near jump */
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__u8 system_id[8]; /* Name - can be used to special case
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partition manager volumes */
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__u8 sector_size[2]; /* bytes per logical sector */
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__u8 cluster_size; /* sectors/cluster */
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__u16 reserved; /* reserved sectors */
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__u8 fats; /* number of FATs */
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__u8 dir_entries[2]; /* root directory entries */
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__u8 sectors[2]; /* number of sectors */
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__u8 media; /* media code (unused) */
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__u16 fat_length; /* sectors/FAT */
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__u16 secs_track; /* sectors per track */
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__u16 heads; /* number of heads */
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__u32 hidden; /* hidden sectors (unused) */
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__u32 total_sect; /* number of sectors (if sectors == 0) */
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/* The following fields are only used by FAT32 */
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__u32 fat32_length; /* sectors/FAT */
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__u16 flags; /* bit 8: fat mirroring, low 4: active fat */
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__u8 version[2]; /* major, minor filesystem version */
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__u32 root_cluster; /* first cluster in root directory */
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__u16 info_sector; /* filesystem info sector */
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__u16 backup_boot; /* backup boot sector */
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__u16 reserved2[6]; /* Unused */
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/* fill up to 512 bytes */
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__u8 junk[448];
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};
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#include <poppack.h>
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struct info_sector {
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__u32 magic; /* Magic for info sector ('RRaA') */
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__u8 junk[0x1dc];
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__u32 reserved1; /* Nothing as far as I can tell */
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__u32 signature; /* 0x61417272 ('rrAa') */
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__u32 free_clusters; /* Free cluster count. -1 if unknown */
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__u32 next_cluster; /* Most recently allocated cluster. */
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__u32 reserved2[3];
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__u16 reserved3;
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__u16 boot_sign;
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};
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typedef struct {
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__u8 name[8],ext[3]; /* name and extension */
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__u8 attr; /* attribute bits */
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__u8 lcase; /* Case for base and extension */
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__u8 ctime_ms; /* Creation time, milliseconds */
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__u16 ctime; /* Creation time */
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__u16 cdate; /* Creation date */
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__u16 adate; /* Last access date */
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__u16 starthi; /* High 16 bits of cluster in FAT32 */
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__u16 time,date,start;/* time, date and first cluster */
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__u32 size; /* file size (in bytes) */
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} DIR_ENT;
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typedef struct _dos_file {
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DIR_ENT dir_ent;
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char *lfn;
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loff_t offset;
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struct _dos_file *parent; /* parent directory */
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struct _dos_file *next; /* next entry */
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struct _dos_file *first; /* first entry (directory only) */
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} DOS_FILE;
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typedef struct {
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unsigned long value;
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unsigned long reserved;
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DOS_FILE *owner;
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int prev; /* number of previous clusters */
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} FAT_ENTRY;
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typedef struct {
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int nfats;
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loff_t fat_start;
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unsigned int fat_size; /* unit is bytes */
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unsigned int fat_bits; /* size of a FAT entry */
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unsigned int eff_fat_bits; /* # of used bits in a FAT entry */
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unsigned long root_cluster; /* 0 for old-style root dir */
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loff_t root_start;
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unsigned int root_entries;
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loff_t data_start;
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unsigned int cluster_size;
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unsigned long clusters;
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loff_t fsinfo_start; /* 0 if not present */
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long free_clusters;
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loff_t backupboot_start; /* 0 if not present */
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FAT_ENTRY *fat;
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} DOS_FS;
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#ifndef offsetof
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#define offsetof(t,e) ((int)&(((t *)0)->e))
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#endif
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#define FSCHECK_INTERACTIVE 0x01
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#define FSCHECK_LIST_FILES 0x02
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#define FSCHECK_TEST_READ 0x04
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#define FSCHECK_VERBOSE 0x08
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#define FSCHECK_IMMEDIATE_WRITE 0x10
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extern ULONG FsCheckFlags;
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extern ULONG FsCheckTotalFiles;
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extern void *FsCheckMemQueue;
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/* value to use as end-of-file marker */
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#define FAT_EOF(fs) (0xff8 | FAT_EXTD(fs))
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#define FAT_IS_EOF(fs,v) ((unsigned long)(v) >= (0xff8|FAT_EXTD(fs)))
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/* value to mark bad clusters */
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#define FAT_BAD(fs) (0xff7 | FAT_EXTD(fs))
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/* range of values used for bad clusters */
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#define FAT_MIN_BAD(fs) (0xff7 | FAT_EXTD(fs))
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#define FAT_MAX_BAD(fs) (0xff7 | FAT_EXTD(fs))
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#define FAT_IS_BAD(fs,v) ((v) >= FAT_MIN_BAD(fs) && (v) <= FAT_MAX_BAD(fs))
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/* return -16 as a number with fs->fat_bits bits */
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#define FAT_EXTD(fs) (((1 << fs->eff_fat_bits)-1) & ~0xf)
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#endif
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/* Local Variables: */
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/* tab-width: 8 */
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/* End: */
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