?? fcntl.h
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#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
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