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