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- /*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
- *
- * @APPLE_LICENSE_HEADER_START@
- *
- * The contents of this file constitute Original Code as defined in and
- * are subject to the Apple Public Source License Version 1.1 (the
- * "License"). You may not use this file except in compliance with the
- * License. Please obtain a copy of the License at
- * http://www.apple.com/publicsource and read it before using this file.
- *
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
- * License for the specific language governing rights and limitations
- * under the License.
- *
- * @APPLE_LICENSE_HEADER_END@
- */
- /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
- /*-
- * Copyright (c) 1983, 1990, 1993
- * The Regents of the University of California. All rights reserved.
- * (c) UNIX System Laboratories, Inc.
- * All or some portions of this file are derived from material licensed
- * to the University of California by American Telephone and Telegraph
- * Co. or Unix System Laboratories, Inc. and are reproduced herein with
- * the permission of UNIX System Laboratories, Inc.
- *
- * 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 8.3 (Berkeley) 1/21/94
- */
-
-
- #ifndef _SYS_FCNTL_H_
- #define _SYS_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 */
-
- /*
- * Kernel encoding of open mode; separate read and write bits that are
- * independently testable: 1 greater than the above.
- *
- * XXX
- * FREAD and FWRITE are excluded from the #ifdef KERNEL so that TIOCFLUSH,
- * which was documented to use FREAD/FWRITE, continues to work.
- */
- #ifndef _POSIX_SOURCE
- #define FREAD 0x0001
- #define FWRITE 0x0002
- #endif
- #define O_NONBLOCK 0x0004 /* no delay */
- #define O_APPEND 0x0008 /* set append mode */
- #ifndef _POSIX_SOURCE
- #define O_SHLOCK 0x0010 /* open with shared file lock */
- #define O_EXLOCK 0x0020 /* open with exclusive file lock */
- #define O_ASYNC 0x0040 /* signal pgrp when data ready */
- #define O_FSYNC 0x0080 /* 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 FMARK 0x1000 /* mark during gc() */
- #define FDEFER 0x2000 /* defer for next gc pass */
- #define FHASLOCK 0x4000 /* 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
- /* 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)
- #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 O_NDELAY O_NONBLOCK /* compat */
- #endif
-
- /*
- * Flags used for copyfile(2)
- */
-
- #ifndef _POSIX_SOURCE
- #define CPF_OVERWRITE 1
- #define CPF_IGNORE_MODE 2
- #define CPF_MASK (CPF_OVERWRITE|CPF_IGNORE_MODE)
- #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 */
- #define F_PREALLOCATE 42 /* Preallocate storage */
- #define F_SETSIZE 43 /* Truncate a file without zeroing space */
- #define F_RDADVISE 44 /* Issue an advisory read async with no copy to user */
- #define F_RDAHEAD 45 /* turn read ahead off/on */
- #define F_READBOOTSTRAP 46 /* Read bootstrap from disk */
- #define F_WRITEBOOTSTRAP 47 /* Write bootstrap on disk */
- #define F_NOCACHE 48 /* turning data caching off/on */
- #define F_LOG2PHYS 49 /* file offset to device offset */
-
- /* 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
-
- /* allocate flags (F_PREALLOCATE) */
-
- #define F_ALLOCATECONTIG 0x00000002 /* allocate contigious space */
- #define F_ALLOCATEALL 0x00000004 /* allocate all requested space or no space at all */
-
- /* Position Modes (fst_posmode) for F_PREALLOCATE */
-
- #define F_PEOFPOSMODE 3 /* Make it past all of the SEEK pos modes so that */
- /* we can keep them in sync should we desire */
- #define F_VOLPOSMODE 4 /* specify volume starting postion */
-
- /*
- * Advisory file segment locking data type -
- * information passed to system by user
- */
- struct flock {
- off_t l_start; /* starting offset */
- off_t l_len; /* len = 0 means until end of file */
- pid_t l_pid; /* lock owner */
- short l_type; /* lock type: read/write, etc. */
- short l_whence; /* type of l_start */
- };
-
-
- /*
- * advisory file read data type -
- * information passed by user to system
- */
- struct radvisory {
- off_t ra_offset;
- int ra_count;
- };
-
-
- #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
-
- /* fstore_t type used by F_DEALLOCATE and F_PREALLOCATE commands */
-
- typedef struct fstore {
- u_int32_t fst_flags; /* IN: flags word */
- int fst_posmode; /* IN: indicates use of offset field */
- off_t fst_offset; /* IN: start of the region */
- off_t fst_length; /* IN: size of the region */
- off_t fst_bytesalloc; /* OUT: number of bytes allocated */
- } fstore_t;
-
- /* fbootstraptransfer_t used by F_READBOOTSTRAP and F_WRITEBOOTSTRAP commands */
-
- typedef struct fbootstraptransfer {
- off_t fbt_offset; /* IN: offset to start read/write */
- size_t fbt_length; /* IN: number of bytes to transfer */
- void *fbt_buffer; /* IN: buffer to be read/written */
- } fbootstraptransfer_t;
-
- /*
- * For F_LOG2PHYS this information is passed back to user
- * Currently only devoffset is returned - that is the VOP_BMAP
- * result - the disk device address corresponding to the
- * current file offset (likely set with an lseek).
- *
- * The flags could hold an indication of whether the # of
- * contiguous bytes reflects the true extent length on disk,
- * or is an advisory value that indicates there is at least that
- * many bytes contiguous. For some filesystems it might be too
- * inefficient to provide anything beyond the advisory value.
- * Flags and contiguous bytes return values are not yet implemented.
- * For them the fcntl will nedd to switch from using BMAP to CMAP
- * and a per filesystem type flag will be needed to interpret the
- * contiguous bytes count result from CMAP.
- */
- struct log2phys {
- u_int32_t l2p_flags; /* unused so far */
- off_t l2p_contigbytes; /* unused so far */
- off_t l2p_devoffset; /* bytes into device */
- };
-
- #ifndef _POSIX_SOURCE
- #define O_POPUP 0x80000000 /* force window to popup on open */
- #define O_ALERT 0x20000000 /* small, clean popup window */
- #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 /* !_SYS_FCNTL_H_ */
-