82 lines
1.7 KiB
C
Executable file
82 lines
1.7 KiB
C
Executable file
#ifndef MTOOLS_LLONG_H
|
|
#define MTOOLS_LLONG_H
|
|
|
|
#if 1
|
|
|
|
|
|
#ifdef HAVE_OFF_T_64
|
|
/* if off_t is already 64 bits, be happy, and don't worry about the
|
|
* loff_t and llseek stuff */
|
|
#define MT_OFF_T off_t
|
|
#endif
|
|
|
|
#ifndef MT_OFF_T
|
|
# ifdef HAVE_LLSEEK
|
|
/* we have llseek. Now, what's its type called? loff_t or offset_t ? */
|
|
# ifdef HAVE_LOFF_T
|
|
# define MT_OFF_T loff_t
|
|
# else
|
|
# ifdef HAVE_OFFSET_T
|
|
# define MT_OFF_T offset_t
|
|
# endif
|
|
# endif
|
|
# endif
|
|
#endif
|
|
|
|
#ifndef MT_OFF_T
|
|
/* we still don't have a suitable mt_off_t type...*/
|
|
# ifdef HAVE_LONG_LONG
|
|
/* ... first try long long ... */
|
|
# define MT_OFF_T long long
|
|
# else
|
|
/* ... and if that fails, fall back on good ole' off_t */
|
|
# define MT_OFF_T off_t
|
|
# endif
|
|
#endif
|
|
|
|
typedef MT_OFF_T mt_off_t;
|
|
|
|
#else
|
|
/* testing: meant to flag dubious assignments between 32 bit length types
|
|
* and 64 bit ones */
|
|
typedef struct {
|
|
int lo;
|
|
int high;
|
|
} *mt_off_t;
|
|
|
|
|
|
#endif
|
|
|
|
typedef mt_off_t mt_size_t;
|
|
|
|
#define min(a,b) ((a) < (b) ? (a) : (b))
|
|
#define MAX_OFF_T_B(bits) \
|
|
(((mt_off_t) 1 << min(bits, sizeof(mt_off_t)*8 - 1)) - 1)
|
|
|
|
#ifdef HAVE_LLSEEK
|
|
# define SEEK_BITS 63
|
|
#else
|
|
# define SEEK_BITS (sizeof(off_t) * 8 - 1)
|
|
#endif
|
|
|
|
extern const mt_off_t max_off_t_31;
|
|
extern const mt_off_t max_off_t_41;
|
|
extern const mt_off_t max_off_t_seek;
|
|
|
|
extern off_t truncBytes32(mt_off_t off);
|
|
mt_off_t sectorsToBytes(Stream_t *This, off_t off);
|
|
|
|
mt_size_t getfree(Stream_t *Stream);
|
|
int getfreeMinBytes(Stream_t *Stream, mt_size_t ref);
|
|
|
|
Stream_t *find_device(char *drive, int mode, struct device *out_dev,
|
|
struct bootsector *boot,
|
|
char *name, int *media, mt_size_t *maxSize);
|
|
|
|
int mt_lseek(int fd, mt_off_t where, int whence);
|
|
|
|
|
|
int log_2(int);
|
|
|
|
#endif
|