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- /*-
- * Copyright (c) 1983, 1990 The Regents of the University of California.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * @(#)fcntl.h 5.14 (Berkeley) 7/1/91
- */
-
- #ifndef _FCNTL_H_
- #define _FCNTL_H_
-
- /*
- * This file includes the definitions for open and fcntl
- * described by POSIX for <fcntl.h>; it also includes
- * related kernel definitions.
- */
-
- #ifndef KERNEL
- #include <sys/types.h>
- #endif
-
- /*
- * File status flags: these are used by open(2), fcntl(2).
- * They are also used (indirectly) in the kernel file structure f_flags,
- * which is a superset of the open/fcntl flags. Open flags and f_flags
- * are inter-convertible using OFLAGS(fflags) and FFLAGS(oflags).
- * Open/fcntl flags begin with O_; kernel-internal flags begin with F.
- */
- /* open-only flags */
- #define O_RDONLY 0x0000 /* open for reading only */
- #define O_WRONLY 0x0001 /* open for writing only */
- #define O_RDWR 0x0002 /* open for reading and writing */
- #define O_ACCMODE 0x0003 /* mask for above modes */
-
- #ifdef KERNEL
- /*
- * Kernel encoding of open mode; separate read and write bits
- * that are independently testable: 1 greater than the above.
- */
- #define FREAD 0x0001
- #define FWRITE 0x0002
- #endif
- #define O_NONBLOCK 0x0004 /* no delay */
- #define O_APPEND 0x0100 /* set append mode */
- #ifndef _POSIX_SOURCE
- #define O_SHLOCK 0x0 /* open with shared file lock */
- #define O_EXLOCK 0x0 /* open with exclusive file lock */
- #define O_ASYNC 0x0040 /* signal pgrp when data ready */
- #define O_FSYNC 0x2000 /* synchronous writes */
- #endif
- #define O_CREAT 0x0200 /* create if nonexistant */
- #define O_TRUNC 0x0400 /* truncate to zero length */
- #define O_EXCL 0x0800 /* error if already exists */
- #ifdef KERNEL
- #define FEXTOPEN 0x0010 /* don't close with DOS Close command */
- #define FTTYRAW 0x0020 /* tty in RAW mode */
- #define FUNLINK 0x0080 /* unlink file when closed */
- #define FMARK 0x0 /* mark during gc() */
- #define FDEFER 0x0 /* defer for next gc pass */
- #define FHASLOCK 0x0 /* descriptor holds advisory lock */
- #endif
-
- /* defined by POSIX 1003.1; BSD default, so no bit required */
- #define O_NOCTTY 0 /* don't assign controlling terminal */
-
- #ifdef KERNEL
- #define FOPEN (-1)
- /* convert from open() flags to/from fflags; convert O_RD/WR to FREAD/FWRITE */
- #define FFLAGS(oflags) ((oflags) + 1)
- #define OFLAGS(fflags) ((fflags) - 1)
-
- /* bits to save after open */
- #define FMASK (FREAD|FWRITE|FAPPEND|FASYNC|FFSYNC|FNONBLOCK)
- /* bits settable by fcntl(F_SETFL, ...) */
- #define FCNTLFLAGS (FAPPEND|FASYNC|FFSYNC|FNONBLOCK|FEXTOPEN)
- #endif
-
- /*
- * The O_* flags used to have only F* names, which were used in the kernel
- * and by fcntl. We retain the F* names for the kernel f_flags field
- * and for backward compatibility for fcntl.
- */
- #ifndef _POSIX_SOURCE
- #define FAPPEND O_APPEND /* kernel/compat */
- #define FASYNC O_ASYNC /* kernel/compat */
- #define FFSYNC O_FSYNC /* kernel */
- #define FNONBLOCK O_NONBLOCK /* kernel */
- #define FNDELAY O_NONBLOCK /* compat */
- #define FNBIO O_NONBLOCK /* compat */
- #define O_NDELAY O_NONBLOCK /* compat */
- #endif
-
- /*
- * Constants used for fcntl(2)
- */
-
- /* command values */
- #define F_DUPFD 0 /* duplicate file descriptor */
- #define F_GETFD 1 /* get file descriptor flags */
- #define F_SETFD 2 /* set file descriptor flags */
- #define F_GETFL 3 /* get file status flags */
- #define F_SETFL 4 /* set file status flags */
- #ifndef _POSIX_SOURCE
- #define F_GETOWN 5 /* get SIGIO/SIGURG proc/pgrp */
- #define F_SETOWN 6 /* set SIGIO/SIGURG proc/pgrp */
- #endif
- #define F_GETLK 7 /* get record locking information */
- #define F_SETLK 8 /* set record locking information */
- #define F_SETLKW 9 /* F_SETLK; wait if blocked */
-
- /* file descriptor flags (F_GETFD, F_SETFD) */
- #define FD_CLOEXEC 1 /* close-on-exec flag */
-
- /* record locking flags (F_GETLK, F_SETLK, F_SETLKW) */
- #define F_RDLCK 1 /* shared or read lock */
- #define F_UNLCK 2 /* unlock */
- #define F_WRLCK 3 /* exclusive or write lock */
- #ifdef KERNEL
- #define F_WAIT 0x010 /* Wait until lock is granted */
- #define F_FLOCK 0x020 /* Use flock(2) semantics for lock */
- #define F_POSIX 0x040 /* Use POSIX semantics for lock */
- #endif
-
- /*
- * Advisory file segment locking data type -
- * information passed to system by user
- */
- struct flock {
- short l_type; /* lock type: read/write, etc. */
- short l_whence; /* type of l_start */
- off_t l_start; /* starting offset */
- off_t l_len; /* len = 0 means until end of file */
- pid_t l_pid; /* lock owner */
- };
-
-
- #ifndef _POSIX_SOURCE
- /* lock operations for flock(2) */
- #define LOCK_SH 0x01 /* shared file lock */
- #define LOCK_EX 0x02 /* exclusive file lock */
- #define LOCK_NB 0x04 /* don't block when locking */
- #define LOCK_UN 0x08 /* unlock file */
- #endif
-
-
- #ifndef KERNEL
- #include <sys/cdefs.h>
-
- __BEGIN_DECLS
- int open __P((const char *, int, ...));
- int creat __P((const char *, mode_t));
- int fcntl __P((int, int, ...));
- #ifndef _POSIX_SOURCE
- int flock __P((int, int));
- #endif /* !_POSIX_SOURCE */
- __END_DECLS
- #endif
-
- #endif /* !_FCNTL_H_ */
-