/
unistd.h
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/
unistd.h
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/*
* Copyright (c) 1989, 1993
* 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.
*
* @(#)unistd.h 8.2 (Berkeley) 1/7/94
* $Id: unistd.h,v 1.19 1999/01/07 21:23:47 julian Exp $
*/
#ifndef _SYS_UNISTD_H_
#define _SYS_UNISTD_H_
#include <sys/_posix.h>
/* compile-time symbolic constants */
#define _POSIX_JOB_CONTROL /* implementation supports job control */
/*
* Although we have saved user/group IDs, we do not use them in setuid
* as described in POSIX 1003.1, because the feature does not work for
* root. We use the saved IDs in seteuid/setegid, which are not currently
* part of the POSIX 1003.1 specification.
*/
#ifdef _NOT_AVAILABLE
#define _POSIX_SAVED_IDS /* saved set-user-ID and set-group-ID */
#endif
#define _POSIX2_VERSION 199212L
/* execution-time symbolic constants */
/* chown requires appropriate privileges */
#define _POSIX_CHOWN_RESTRICTED 1
/* too-long path components generate errors */
#define _POSIX_NO_TRUNC 1
/* may disable terminal special characters */
#define _POSIX_VDISABLE 0xff
/* access function */
#define F_OK 0 /* test for existence of file */
#define X_OK 0x01 /* test for execute or search permission */
#define W_OK 0x02 /* test for write permission */
#define R_OK 0x04 /* test for read permission */
/* whence values for lseek(2) */
#define SEEK_SET 0 /* set file offset to offset */
#define SEEK_CUR 1 /* set file offset to current plus offset */
#define SEEK_END 2 /* set file offset to EOF plus offset */
#ifndef _POSIX_SOURCE
/* whence values for lseek(2); renamed by POSIX 1003.1 */
#define L_SET SEEK_SET
#define L_INCR SEEK_CUR
#define L_XTND SEEK_END
#endif
/* configurable pathname variables */
#define _PC_LINK_MAX 1
#define _PC_MAX_CANON 2
#define _PC_MAX_INPUT 3
#define _PC_NAME_MAX 4
#define _PC_PATH_MAX 5
#define _PC_PIPE_BUF 6
#define _PC_CHOWN_RESTRICTED 7
#define _PC_NO_TRUNC 8
#define _PC_VDISABLE 9
/* configurable system variables */
#define _SC_ARG_MAX 1
#define _SC_CHILD_MAX 2
#define _SC_CLK_TCK 3
#define _SC_NGROUPS_MAX 4
#define _SC_OPEN_MAX 5
#define _SC_JOB_CONTROL 6
#define _SC_SAVED_IDS 7
#define _SC_VERSION 8
#define _SC_BC_BASE_MAX 9
#define _SC_BC_DIM_MAX 10
#define _SC_BC_SCALE_MAX 11
#define _SC_BC_STRING_MAX 12
#define _SC_COLL_WEIGHTS_MAX 13
#define _SC_EXPR_NEST_MAX 14
#define _SC_LINE_MAX 15
#define _SC_RE_DUP_MAX 16
#define _SC_2_VERSION 17
#define _SC_2_C_BIND 18
#define _SC_2_C_DEV 19
#define _SC_2_CHAR_TERM 20
#define _SC_2_FORT_DEV 21
#define _SC_2_FORT_RUN 22
#define _SC_2_LOCALEDEF 23
#define _SC_2_SW_DEV 24
#define _SC_2_UPE 25
#define _SC_STREAM_MAX 26
#define _SC_TZNAME_MAX 27
/* configurable system strings */
#define _CS_PATH 1
#ifdef _P1003_1B_VISIBLE
#define _POSIX_PRIORITY_SCHEDULING
#if 0
/* Not until the dust settles after the header commit
*/
#define _POSIX_ASYNCHRONOUS_IO
#define _POSIX_MEMLOCK
#define _POSIX_MEMLOCK_RANGE
#endif
/* POSIX.1B sysconf options */
#define _SC_ASYNCHRONOUS_IO 28
#define _SC_MAPPED_FILES 29
#define _SC_MEMLOCK 30
#define _SC_MEMLOCK_RANGE 31
#define _SC_MEMORY_PROTECTION 32
#define _SC_MESSAGE_PASSING 33
#define _SC_PRIORITIZED_IO 34
#define _SC_PRIORITY_SCHEDULING 35
#define _SC_REALTIME_SIGNALS 36
#define _SC_SEMAPHORES 37
#define _SC_FSYNC 38
#define _SC_SHARED_MEMORY_OBJECTS 39
#define _SC_SYNCHRONIZED_IO 40
#define _SC_TIMERS 41
#define _SC_AIO_LISTIO_MAX 42
#define _SC_AIO_MAX 43
#define _SC_AIO_PRIO_DELTA_MAX 44
#define _SC_DELAYTIMER_MAX 45
#define _SC_MQ_OPEN_MAX 46
#define _SC_PAGESIZE 47
#define _SC_RTSIG_MAX 48
#define _SC_SEM_NSEMS_MAX 49
#define _SC_SEM_VALUE_MAX 50
#define _SC_SIGQUEUE_MAX 51
#define _SC_TIMER_MAX 52
/* POSIX.1B pathconf and fpathconf options */
#define _PC_ASYNC_IO 53
#define _PC_PRIO_IO 54
#define _PC_SYNC_IO 55
#endif /* _P1003_1B_VISIBLE */
#ifndef _POSIX_SOURCE
/*
* rfork() options.
*
* XXX currently, operations without RFPROC set are not supported.
*/
#define RFNAMEG (1<<0) /* UNIMPL new plan9 `name space' */
#define RFENVG (1<<1) /* UNIMPL copy plan9 `env space' */
#define RFFDG (1<<2) /* copy fd table */
#define RFNOTEG (1<<3) /* UNIMPL create new plan9 `note group' */
#define RFPROC (1<<4) /* change child (else changes curproc) */
#define RFMEM (1<<5) /* share `address space' */
#define RFNOWAIT (1<<6) /* parent need not wait() on child */
#define RFCNAMEG (1<<10) /* UNIMPL zero plan9 `name space' */
#define RFCENVG (1<<11) /* UNIMPL zero plan9 `env space' */
#define RFCFDG (1<<12) /* zero fd table */
#define RFTHREAD (1<<13) /* enable kernel thread support */
#define RFSIGSHARE (1<<14) /* share signal handlers */
#define RFLINUXTHPN (1<<16) /* do linux clone exit parent notification */
#define RFPPWAIT (1<<31) /* parent sleeps until child exits (vfork) */
#endif /* !_POSIX_SOURCE */
#endif /* !_SYS_UNISTD_H_ */