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Rev 2684 Rev 2693
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#define SEEK_SET    0
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#define SEEK_SET    0
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#define SEEK_CUR    1
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#define SEEK_CUR    1
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#define SEEK_END    2
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#define SEEK_END    2
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extern ssize_t write(int fd, const void * buf, size_t count);
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extern ssize_t write(int, const void *, size_t);
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extern ssize_t read(int fd, void * buf, size_t count);
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extern ssize_t read(int, void *, size_t);
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extern off_t lseek(int, off_t, int);
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extern off_t lseek(int, off_t, int);
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extern int ftruncate(int, off_t);
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extern void _exit(int status);
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extern void _exit(int status);
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extern void *sbrk(ssize_t incr);
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extern void *sbrk(ssize_t incr);
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extern int usleep(unsigned long usec);
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extern int usleep(unsigned long usec);
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extern unsigned int sleep(unsigned int seconds);
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extern unsigned int sleep(unsigned int seconds);