लिनक्स/linux-0.01.tar/include/fcntl.h
< लिनक्स | linux-0.01.tar
#ifndef _FCNTL_H
#define _FCNTL_H
#include <sys/types.h>
/* open/fcntl - NOCTTY, NDELAY isn't implemented yet */
#define O_ACCMODE 00003
#define O_RDONLY 00
#define O_WRONLY 01
#define O_RDWR 02
#define O_CREAT 00100 /* not fcntl */
#define O_EXCL 00200 /* not fcntl */
#define O_NOCTTY 00400 /* not fcntl */
#define O_TRUNC 01000 /* not fcntl */
#define O_APPEND 02000
#define O_NONBLOCK 04000 /* not fcntl */
#define O_NDELAY O_NONBLOCK
/* Defines for fcntl-commands. Note that currently
* locking isn't supported, and other things aren't really
* tested.
*/
#define F_DUPFD 0 /* dup */
#define F_GETFD 1 /* get f_flags */
#define F_SETFD 2 /* set f_flags */
#define F_GETFL 3 /* more flags (cloexec) */
#define F_SETFL 4
#define F_GETLK 5 /* not implemented */
#define F_SETLK 6
#define F_SETLKW 7
/* for F_[GET|SET]FL */
#define FD_CLOEXEC 1 /* actually anything with low bit set goes */
/* Ok, these are locking features, and aren't implemented at any
* level. POSIX wants them.
*/
#define F_RDLCK 0
#define F_WRLCK 1
#define F_UNLCK 2
/* Once again - not implemented, but ... */
struct flock {
short l_type;
short l_whence;
off_t l_start;
off_t l_len;
pid_t l_pid;
};
extern int creat(const char * filename,mode_t mode);
extern int fcntl(int fildes,int cmd, ...);
extern int open(const char * filename, int flags, ...);
#endif