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/* dosfsck.h - Common data structures and global variables */
/* Written 1993 by Werner Almesberger */
/* FAT32, VFAT, Atari format support, and various fixes additions May 1998
* by Roman Hodek <Roman.Hodek@informatik.uni-erlangen.de> */
#ifndef _DOSFSCK_H
#define _DOSFSCK_H
#include <sys/types.h>
#define _LINUX_STAT_H /* hack to avoid inclusion of <linux/stat.h> */
#define _LINUX_STRING_H_ /* hack to avoid inclusion of <linux/string.h>*/
#include <linux/msdos_fs.h>
/* 2.1 kernels use le16_to_cpu() type functions for CF_LE_W & Co., but don't
* export this macros, only __le16_to_cpu(). */
#ifndef le16_to_cpu
#define le16_to_cpu __le16_to_cpu
#define le32_to_cpu __le32_to_cpu
#define cpu_to_le16 __cpu_to_le16
#define cpu_to_le32 __cpu_to_le32
#endif
#define VFAT_LN_ATTR (ATTR_RO | ATTR_HIDDEN | ATTR_SYS | ATTR_VOLUME)
/* ++roman: Use own definition of boot sector structure -- the kernel headers'
* name for it is msdos_boot_sector in 2.0 and fat_boot_sector in 2.1 ... */
struct 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 cluster_size; /* sectors/cluster */
__u16 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 (unused) */
__u16 fat_length; /* sectors/FAT */
__u16 secs_track; /* sectors per track */
__u16 heads; /* number of heads */
__u32 hidden; /* hidden sectors (unused) */
__u32 total_sect; /* number of sectors (if sectors == 0) */
/* The following fields are only used by FAT32 */
__u32 fat32_length; /* sectors/FAT */
__u16 flags; /* bit 8: fat mirroring, low 4: active fat */
__u8 version[2]; /* major, minor filesystem version */
__u32 root_cluster; /* first cluster in root directory */
__u16 info_sector; /* filesystem info sector */
__u16 backup_boot; /* backup boot sector */
__u16 reserved2[6]; /* Unused */
/* fill up to 512 bytes */
__u8 junk[448];
} __attribute__ ((packed));
struct info_sector {
__u32 magic; /* Magic for info sector ('RRaA') */
__u8 junk[0x1dc];
__u32 reserved1; /* Nothing as far as I can tell */
__u32 signature; /* 0x61417272 ('rrAa') */
__u32 free_clusters; /* Free cluster count. -1 if unknown */
__u32 next_cluster; /* Most recently allocated cluster. */
__u32 reserved2[3];
__u16 reserved3;
__u16 boot_sign;
};
typedef struct {
__s8 name[8],ext[3]; /* name and extension */
__u8 attr; /* attribute bits */
__u8 lcase; /* Case for base and extension */
__u8 ctime_ms; /* Creation time, milliseconds */
__u16 ctime; /* Creation time */
__u16 cdate; /* Creation date */
__u16 adate; /* Last access date */
__u16 starthi; /* High 16 bits of cluster in FAT32 */
__u16 time,date,start;/* time, date and first cluster */
__u32 size; /* file size (in bytes) */
} DIR_ENT;
typedef struct _dos_file {
DIR_ENT dir_ent;
char *lfn;
loff_t offset;
struct _dos_file *parent; /* parent directory */
struct _dos_file *next; /* next entry */
struct _dos_file *first; /* first entry (directory only) */
} DOS_FILE;
typedef struct {
unsigned long value;
unsigned long reserved;
DOS_FILE *owner;
int prev; /* number of previous clusters */
} FAT_ENTRY;
typedef struct {
loff_t fat_start;
unsigned int fat_size; /* unit is bytes */
unsigned int fat_bits; /* size of a FAT entry */
unsigned int eff_fat_bits; /* # of used bits in a FAT entry */
unsigned long root_cluster; /* 0 for old-style root dir */
loff_t root_start;
unsigned int root_entries;
loff_t data_start;
unsigned int cluster_size;
unsigned long clusters;
loff_t fsinfo_start; /* 0 if not present */
long free_clusters;
loff_t backupboot_start; /* 0 if not present */
FAT_ENTRY *fat;
} DOS_FS;
#ifndef offsetof
#define offsetof(t,e) ((int)&(((t *)0)->e))
#endif
extern int interactive,list,verbose,test,write_immed;
extern int atari_format;
extern unsigned n_files;
extern void *mem_queue;
/* value to use as end-of-file marker */
#define FAT_EOF(fs) ((atari_format ? 0xfff : 0xff8) | FAT_EXTD(fs))
#define FAT_IS_EOF(fs,v) ((unsigned long)(v) >= (0xff8|FAT_EXTD(fs)))
/* value to mark bad clusters */
#define FAT_BAD(fs) (0xff7 | FAT_EXTD(fs))
/* range of values used for bad clusters */
#define FAT_MIN_BAD(fs) ((atari_format ? 0xff0 : 0xff7) | FAT_EXTD(fs))
#define FAT_MAX_BAD(fs) ((atari_format ? 0xff7 : 0xff7) | FAT_EXTD(fs))
#define FAT_IS_BAD(fs,v) ((v) >= FAT_MIN_BAD(fs) && (v) <= FAT_MAX_BAD(fs))
/* return -16 as a number with fs->fat_bits bits */
#define FAT_EXTD(fs) (((1 << fs->eff_fat_bits)-1) & ~0xf)
#endif
/* Local Variables: */
/* tab-width: 8 */
/* End: */
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