/* $NetBSD: unistd.h,v 1.35 2006/08/14 18:17:48 rpaulo Exp $ */ /* * 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. 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 */ #ifndef _SYS_UNISTD_H_ #define _SYS_UNISTD_H_ #include /* compile-time symbolic constants */ #define _POSIX_JOB_CONTROL /* implementation supports job control */ /* * According to POSIX 1003.1: * "The saved set-user-ID capability allows a program to regain the * effective user ID established at the last exec call." * However, the setuid/setgid function as specified by POSIX 1003.1 does * not allow changing the effective ID from the super-user without also * changed the saved ID, so it is impossible to get super-user privileges * back later. Instead we provide this feature independent of the current * effective ID through the seteuid/setegid function. In addition, we do * not use the saved ID as specified by POSIX 1003.1 in setuid/setgid, * because this would make it impossible for a set-user-ID executable * owned by a user other than the super-user to permanently revoke its * extra privileges. */ #ifdef _NOT_AVAILABLE #define _POSIX_SAVED_IDS /* saved set-user-ID and set-group-ID */ #endif #define _POSIX_VERSION 199009L #define _POSIX2_VERSION 199212L /* execution-time symbolic constants */ /* chown requires appropriate privileges */ #define _POSIX_CHOWN_RESTRICTED 1 /* clock selection */ #define _POSIX_CLOCK_SELECTION -1 /* too-long path components generate errors */ #define _POSIX_NO_TRUNC 1 /* may disable terminal special characters */ #define _POSIX_VDISABLE ((unsigned char)'\377') /* file synchronization is available */ #define _POSIX_FSYNC 1 /* synchronized I/O is available */ #define _POSIX_SYNCHRONIZED_IO 1 /* memory mapped files */ #define _POSIX_MAPPED_FILES 1 /* memory locking of whole address space */ #define _POSIX_MEMLOCK 1 /* memory locking address ranges */ #define _POSIX_MEMLOCK_RANGE 1 /* memory access protections */ #define _POSIX_MEMORY_PROTECTION 1 /* monotonic clock */ #define _POSIX_MONOTONIC_CLOCK 200112L /* threads */ #define _POSIX_THREADS 200112L /* semaphores */ #define _POSIX_SEMAPHORES 0 /* barriers */ #define _POSIX_BARRIERS 200112L /* timers */ #define _POSIX_TIMERS 200112L /* spin locks */ #define _POSIX_SPIN_LOCKS 200112L /* read/write locks */ #define _POSIX_READER_WRITER_LOCKS 200112L /* XPG4.2 shared memory */ #define _XOPEN_SHM 0 #if defined(_NETBSD_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 /* * fsync_range values. * * Note the following flag values were chosen to not overlap * values for SEEK_XXX flags. While not currently implemented, * it is possible to extend this call to respect SEEK_CUR and * SEEK_END offset addressing modes. */ #define FDATASYNC 0x0010 /* sync data and minimal metadata */ #define FFILESYNC 0x0020 /* sync data and metadata */ #define FDISKSYNC 0x0040 /* flush disk caches after sync */ #endif /* configurable pathname variables; use as argument to pathconf(3) */ #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 #define _PC_SYNC_IO 10 #define _PC_FILESIZEBITS 11 /* configurable system variables; use as argument to sysconf(3) */ /* * XXX The value of _SC_CLK_TCK is embedded in . * XXX The value of _SC_PAGESIZE is embedded in . */ #define _SC_ARG_MAX 1 #define _SC_CHILD_MAX 2 #define _O_SC_CLK_TCK 3 /* Old version, always 100 */ #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 #define _SC_PAGESIZE 28 #define _SC_PAGE_SIZE _SC_PAGESIZE /* 1170 compatibility */ #define _SC_FSYNC 29 #define _SC_XOPEN_SHM 30 #define _SC_SYNCHRONIZED_IO 31 #define _SC_IOV_MAX 32 #define _SC_MAPPED_FILES 33 #define _SC_MEMLOCK 34 #define _SC_MEMLOCK_RANGE 35 #define _SC_MEMORY_PROTECTION 36 #define _SC_LOGIN_NAME_MAX 37 #define _SC_MONOTONIC_CLOCK 38 #define _SC_CLK_TCK 39 /* New, variable version */ #define _SC_ATEXIT_MAX 40 #define _SC_THREADS 41 #define _SC_SEMAPHORES 42 #define _SC_BARRIERS 43 #define _SC_TIMERS 44 #define _SC_SPIN_LOCKS 45 #define _SC_READER_WRITER_LOCKS 46 #define _SC_GETGR_R_SIZE_MAX 47 #define _SC_GETPW_R_SIZE_MAX 48 #define _SC_CLOCK_SELECTION 49 /* configurable system strings */ #define _CS_PATH 1 #endif /* !_SYS_UNISTD_H_ */