28 lines
734 B
C
28 lines
734 B
C
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#ifndef _UNISTD_H
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#define _UNISTD_H
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#include <sys/types.h>
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/* Standard file descriptors used by streams */
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#define STDIN_FILENO 0 /* Standard input */
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#define STDOUT_FILENO 1 /* Standard output */
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#define STDERR_FILENO 2 /* Standard error output */
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/* Seek constants for lseek() / _PDCLIB_lseek() */
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#ifndef SEEK_SET
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#define SEEK_SET 0 /* Seek from beginning of file */
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#define SEEK_CUR 1 /* Seek from current position */
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#define SEEK_END 2 /* Seek from end of file */
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#endif
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/* Null pointer declaration constant */
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#ifndef NULL
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#define NULL ((void *)0)
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#endif
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int open(const char *pathname, int flags, ...);
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int read(int fd, void *buf, size_t count);
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int close(int fd);
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#endif /* _UNISTD_H */
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