1 /*- 2 * Copyright (c) 1983, 1990 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * %sccs.include.redist.c% 6 * 7 * @(#)fcntl.h 5.5 (Berkeley) 05/29/90 8 */ 9 10 #ifndef F_DUPFD 11 12 /* command values for fcntl(2) */ 13 #define F_DUPFD 0 /* duplicate file descriptor */ 14 #define F_GETFD 1 /* get file descriptor flags */ 15 #define F_SETFD 2 /* set file descriptor flags */ 16 #define F_GETFL 3 /* get file status flags */ 17 #define F_SETFL 4 /* set file status flags */ 18 #ifndef _POSIX_SOURCE 19 #define F_GETOWN 5 /* get SIGIO/SIGURG proc/pgrp */ 20 #define F_SETOWN 6 /* set SIGIO/SIGURG proc/pgrp */ 21 #endif 22 #define F_GETLK 7 /* get record locking information */ 23 #define F_SETLK 8 /* set record locking information */ 24 #define F_SETLKW 9 /* F_SETLK; wait if blocked */ 25 26 /* file descriptor flags (F_GETFD, F_SETFD) */ 27 #define FD_CLOEXEC 1 /* close-on-exec flag */ 28 29 /* record locking flags (F_GETLK, F_SETLK, F_SETLKW) */ 30 #define F_RDLCK 1 /* shared or read lock */ 31 #define F_UNLCK 2 /* unlock */ 32 #define F_WRLCK 3 /* exclusive or write lock */ 33 34 #ifndef _POSIX_SOURCE 35 /* lock operations for flock(2) */ 36 #define LOCK_SH 0x01 /* shared file lock */ 37 #define LOCK_EX 0x02 /* exclusive file lock */ 38 #define LOCK_NB 0x04 /* don't block when locking */ 39 #define LOCK_UN 0x08 /* unlock file */ 40 #endif 41 42 /* file status flags */ 43 #define O_RDONLY 00000 /* open for reading only */ 44 #define O_WRONLY 00001 /* open for writing only */ 45 #define O_RDWR 00002 /* open for reading and writing */ 46 #define O_NONBLOCK 00004 /* no delay */ 47 #ifndef _POSIX_SOURCE 48 #define O_NDELAY O_NONBLOCK 49 #define FNDELAY O_NONBLOCK 50 #endif 51 /* 00008 /* unused */ 52 #define O_APPEND 00010 /* set append mode */ 53 #ifndef _POSIX_SOURCE 54 #define FAPPEND O_APPEND 55 #endif 56 /* kernel placeholders */ 57 #if !defined(_POSIX_SOURCE) && defined(KERNEL) 58 #define O_MARK 00020 /* mark during gc() */ 59 #define O_DEFER 00040 /* defer for next gc pass */ 60 #endif 61 /* 00080 /* unused */ 62 #ifndef _POSIX_SOURCE 63 #define O_ASYNC 00100 /* signal pgrp when data ready */ 64 #define FASYNC O_ASYNC 65 #define O_SHLOCK 00200 /* shared file lock present */ 66 #define O_EXLOCK 00400 /* exclusive file lock present */ 67 /* 00800 /* unused */ 68 #endif 69 #define O_CREAT 01000 /* create if nonexistant */ 70 #define O_TRUNC 02000 /* truncate to zero length */ 71 #define O_EXCL 04000 /* error if already exists */ 72 /* 08000 /* unused */ 73 74 /* defined by POSIX 1003.1; BSD default, so no bit required */ 75 #define O_NOCTTY 0 /* don't assign controlling terminal */ 76 77 /* mask for file access modes */ 78 #define O_ACCMODE (O_RDONLY|O_WRONLY|O_RDWR) 79 80 #if __STDC__ || c_plusplus 81 extern int fcntl(int, int, int); 82 extern int creat(const char *, mode_t); 83 extern int open(const char *, int, ...); 84 #else 85 extern int fcntl(); 86 extern int creat(); 87 extern int open(); 88 #endif 89 90 #endif /* !F_DUPFD */ 91