180 lines
6.4 KiB
C
180 lines
6.4 KiB
C
/*
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* Copyright (c) 1989, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)unistd.h 8.2 (Berkeley) 1/7/94
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* $FreeBSD$
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*/
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#ifndef _SYS_UNISTD_H_
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#define _SYS_UNISTD_H_
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#include <sys/cdefs.h>
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/*
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* POSIX options and option groups we unconditionally do or don't
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* implement. Those options which are implemented (or not) entirely
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* in user mode are defined in <unistd.h>. Please keep this list in
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* alphabetical order.
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*
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* Anything which is defined as zero below **must** have an
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* implementation for the corresponding sysconf() which is able to
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* determine conclusively whether or not the feature is supported.
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* Anything which is defined as other than -1 below **must** have
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* complete headers, types, and function declarations as specified by
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* the POSIX standard; however, if the relevant sysconf() function
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* returns -1, the functions may be stubbed out.
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*/
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#define _POSIX_ADVISORY_INFO -1
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#define _POSIX_ASYNCHRONOUS_IO 0
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#define _POSIX_CHOWN_RESTRICTED 1
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#define _POSIX_CLOCK_SELECTION -1
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#define _POSIX_CPUTIME -1
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#define _POSIX_FSYNC 200112L
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#define _POSIX_IPV6 0
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#define _POSIX_JOB_CONTROL 1
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#define _POSIX_MAPPED_FILES 200112L
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#define _POSIX_MEMLOCK -1
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#define _POSIX_MEMLOCK_RANGE 200112L
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#define _POSIX_MEMORY_PROTECTION 200112L
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#define _POSIX_MESSAGE_PASSING -1
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#define _POSIX_MONOTONIC_CLOCK -1
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#define _POSIX_NO_TRUNC 1
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#define _POSIX_PRIORITIZED_IO -1
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#define _POSIX_PRIORITY_SCHEDULING 200112L
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#define _POSIX_RAW_SOCKETS 200112L
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#define _POSIX_REALTIME_SIGNALS -1
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#define _POSIX_SEMAPHORES -1
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#define _POSIX_SHARED_MEMORY_OBJECTS 200112L
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#define _POSIX_SPORADIC_SERVER -1
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#define _POSIX_SYNCHRONIZED_IO -1
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#define _POSIX_TIMEOUTS -1
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#define _POSIX_TYPED_MEMORY_OBJECTS -1
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#define _POSIX_VDISABLE 0xff
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#if __XSI_VISIBLE
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#define _XOPEN_SHM 1
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#define _XOPEN_STREAMS -1
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#endif
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/*
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* Although we have saved user/group IDs, we do not use them in setuid
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* as described in POSIX 1003.1, because the feature does not work for
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* root. We use the saved IDs in seteuid/setegid, which are not currently
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* part of the POSIX 1003.1 specification. XXX revisit for 1003.1-2001
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* as this is now mandatory.
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*/
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#ifdef _NOT_AVAILABLE
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#define _POSIX_SAVED_IDS 1 /* saved set-user-ID and set-group-ID */
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#endif
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/* Define the POSIX.1 version we target for compliance. */
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#define _POSIX_VERSION 200112L
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/* access function */
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#define F_OK 0 /* test for existence of file */
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#define X_OK 0x01 /* test for execute or search permission */
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#define W_OK 0x02 /* test for write permission */
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#define R_OK 0x04 /* test for read permission */
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/* whence values for lseek(2) */
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#ifndef SEEK_SET
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#define SEEK_SET 0 /* set file offset to offset */
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#define SEEK_CUR 1 /* set file offset to current plus offset */
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#define SEEK_END 2 /* set file offset to EOF plus offset */
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#endif
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#ifndef _POSIX_SOURCE
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/* whence values for lseek(2); renamed by POSIX 1003.1 */
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#define L_SET SEEK_SET
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#define L_INCR SEEK_CUR
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#define L_XTND SEEK_END
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#endif
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/* configurable pathname variables */
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#define _PC_LINK_MAX 1
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#define _PC_MAX_CANON 2
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#define _PC_MAX_INPUT 3
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#define _PC_NAME_MAX 4
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#define _PC_PATH_MAX 5
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#define _PC_PIPE_BUF 6
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#define _PC_CHOWN_RESTRICTED 7
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#define _PC_NO_TRUNC 8
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#define _PC_VDISABLE 9
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#if __POSIX_VISIBLE >= 199309
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#define _PC_ASYNC_IO 53
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#define _PC_PRIO_IO 54
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#define _PC_SYNC_IO 55
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#endif
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#if __POSIX_VISIBLE >= 200112
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#define _PC_ALLOC_SIZE_MIN 10
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#define _PC_FILESIZEBITS 12
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#define _PC_REC_INCR_XFER_SIZE 14
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#define _PC_REC_MAX_XFER_SIZE 15
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#define _PC_REC_MIN_XFER_SIZE 16
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#define _PC_REC_XFER_ALIGN 17
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#define _PC_SYMLINK_MAX 18
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#endif
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#if __BSD_VISIBLE
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#define _PC_ACL_EXTENDED 59
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#define _PC_ACL_PATH_MAX 60
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#define _PC_CAP_PRESENT 61
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#define _PC_INF_PRESENT 62
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#define _PC_MAC_PRESENT 63
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#endif
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#if __BSD_VISIBLE
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/*
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* rfork() options.
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*
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* XXX currently, some operations without RFPROC set are not supported.
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*/
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#define RFNAMEG (1<<0) /* UNIMPL new plan9 `name space' */
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#define RFENVG (1<<1) /* UNIMPL copy plan9 `env space' */
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#define RFFDG (1<<2) /* copy fd table */
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#define RFNOTEG (1<<3) /* UNIMPL create new plan9 `note group' */
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#define RFPROC (1<<4) /* change child (else changes curproc) */
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#define RFMEM (1<<5) /* share `address space' */
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#define RFNOWAIT (1<<6) /* give child to init */
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#define RFCNAMEG (1<<10) /* UNIMPL zero plan9 `name space' */
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#define RFCENVG (1<<11) /* UNIMPL zero plan9 `env space' */
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#define RFCFDG (1<<12) /* close all fds, zero fd table */
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#define RFTHREAD (1<<13) /* enable kernel thread support */
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#define RFSIGSHARE (1<<14) /* share signal handlers */
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#define RFLINUXTHPN (1<<16) /* do linux clone exit parent notification */
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#define RFSTOPPED (1<<17) /* leave child in a stopped state */
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#define RFHIGHPID (1<<18) /* use a pid higher then 10 (idleproc) */
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#define RFPPWAIT (1<<31) /* parent sleeps until child exits (vfork) */
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#define RFKERNELONLY (RFSTOPPED | RFHIGHPID | RFPPWAIT)
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#endif /* __BSD_VISIBLE */
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#endif /* !_SYS_UNISTD_H_ */
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