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/* unistd.h <ndf@linux.mit.edu> */
#include <features.h>
#include <sys/types.h>
#ifndef __UNISTD_H
#define __UNISTD_H
#define STDIN_FILENO 0
#define STDOUT_FILENO 1
#define STDERR_FILENO 2
extern int close __P ((int));
extern size_t read __P ((int __fd, char * __buf, size_t __nbytes));
extern size_t write __P ((int __fd, __const char * __buf, size_t __n));
extern off_t lseek __P ((int __fd, off_t __n, int __whence));
extern int pipe __P ((int __pipedes[2]));
extern unsigned int alarm __P ((unsigned int __seconds));
extern unsigned int sleep __P ((unsigned int __seconds));
extern int pause __P ((void));
extern char* crypt __P((__const char *__key, __const char *__salt));
#ifndef SEEK_SET
#define SEEK_SET 0
#define SEEK_CUR 1
#define SEEK_END 2
#endif
#ifndef R_OK
#define R_OK 4 /* Test for read permission. */
#define W_OK 2 /* Test for write permission. */
#define X_OK 1 /* Test for execute permission. */
#define F_OK 0 /* Test for existence. */
#endif
#endif /* __UNISTD_H */
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