sys/sys/unistd.h

   1 /*-
   2  * Copyright (c) 1989, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 4. Neither the name of the University nor the names of its contributors
  14  *    may be used to endorse or promote products derived from this software
  15  *    without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  *
  29  *      @(#)unistd.h    8.2 (Berkeley) 1/7/94
  30  * $FreeBSD: src/sys/sys/unistd.h,v 1.50 2009/01/31 10:04:36 trhodes Exp $
  31  * $DragonFly: src/sys/sys/unistd.h,v 1.10 2008/09/22 09:13:21 hasso Exp $
  32  */
  33
  34 #ifndef _SYS_UNISTD_H_
  35 #define _SYS_UNISTD_H_
  36
  37 #include <sys/cdefs.h>
  38 #include <sys/types.h>
  39
  40 /*
  41  * POSIX options and option groups we unconditionally do or don't
  42  * implement.  Those options which are implemented (or not) entirely
  43  * in user mode are defined in <unistd.h>.  Please keep this list in
  44  * alphabetical order.
  45  *
  46  * Anything which is defined as zero below **must** have an
  47  * implementation for the corresponding sysconf() which is able to
  48  * determine conclusively whether or not the feature is supported.
  49  * Anything which is defined as other than -1 below **must** have
  50  * complete headers, types, and function declarations as specified by
  51  * the POSIX standard; however, if the relevant sysconf() function
  52  * returns -1, the functions may be stubbed out.
  53  */
  54 #define _POSIX_ADVISORY_INFO            -1
  55 #define _POSIX_ASYNCHRONOUS_IO          0
  56 #define _POSIX_BARRIERS                 200112L
  57 #define _POSIX_CHOWN_RESTRICTED         1
  58 #define _POSIX_CLOCK_SELECTION          -1
  59 #define _POSIX_CPUTIME                  -1
  60 #define _POSIX_FSYNC                    200112L
  61 #define _POSIX_IPV6                     0
  62 #define _POSIX_JOB_CONTROL              1
  63 #define _POSIX_MAPPED_FILES             200112L
  64 #define _POSIX_MEMLOCK                  -1
  65 #define _POSIX_MEMLOCK_RANGE            200112L
  66 #define _POSIX_MEMORY_PROTECTION        200112L
  67 #define _POSIX_MESSAGE_PASSING          200112L
  68 #define _POSIX_MONOTONIC_CLOCK          200112L
  69 #define _POSIX_NO_TRUNC                 1
  70 #define _POSIX_PRIORITIZED_IO           -1
  71 #define _POSIX_PRIORITY_SCHEDULING      200112L
  72 #define _POSIX_RAW_SOCKETS              200112L
  73 #define _POSIX_REALTIME_SIGNALS         200112L
  74 #define _POSIX_SEMAPHORES               -1
  75 #define _POSIX_SHARED_MEMORY_OBJECTS    200112L
  76 #define _POSIX_SPIN_LOCKS               200112L
  77 #define _POSIX_SPORADIC_SERVER          -1
  78 #define _POSIX_SYNCHRONIZED_IO          -1
  79 #define _POSIX_TIMEOUTS                 200112L
  80 #define _POSIX_TIMERS                   200112L
  81 #define _POSIX_TYPED_MEMORY_OBJECTS     -1
  82 #define _POSIX_VDISABLE                 0xff
  83
  84 #if __XSI_VISIBLE
  85 #define _XOPEN_SHM                      1
  86 #define _XOPEN_STREAMS                  -1
  87 #endif
  88
  89 /*
  90  * Although we have saved user/group IDs, we do not use them in setuid
  91  * as described in POSIX 1003.1, because the feature does not work for
  92  * root.  We use the saved IDs in seteuid/setegid, which are not currently
  93  * part of the POSIX 1003.1 specification.  XXX revisit for 1003.1-2001
  94  * as this is now mandatory.
  95  */
  96 #ifdef _NOT_AVAILABLE
  97 #define _POSIX_SAVED_IDS        1 /* saved set-user-ID and set-group-ID */
  98 #endif
  99
 100 /* Define the POSIX.1 version we target for compliance. */
 101 #ifndef _POSIX_VERSION
 102 #define _POSIX_VERSION          200112L
 103 #endif
 104
 105 /* access function */
 106 #define F_OK            0       /* test for existence of file */
 107 #define X_OK            0x01    /* test for execute or search permission */
 108 #define W_OK            0x02    /* test for write permission */
 109 #define R_OK            0x04    /* test for read permission */
 110
 111 /* whence values for lseek(2) */
 112 #ifndef SEEK_SET
 113 #define SEEK_SET        0       /* set file offset to offset */
 114 #define SEEK_CUR        1       /* set file offset to current plus offset */
 115 #define SEEK_END        2       /* set file offset to EOF plus offset */
 116 #endif
 117 #if __BSD_VISIBLE
 118 #define SEEK_DATA       3       /* set file offset to next data past offset */
 119 #define SEEK_HOLE       4       /* set file offset to next hole past offset */
 120 #endif
 121
 122 #ifndef _POSIX_SOURCE
 123 /* whence values for lseek(2); renamed by POSIX 1003.1 */
 124 #define L_SET           SEEK_SET
 125 #define L_INCR          SEEK_CUR
 126 #define L_XTND          SEEK_END
 127 #endif
 128
 129 /* configurable pathname variables */
 130 #define _PC_LINK_MAX             1
 131 #define _PC_MAX_CANON            2
 132 #define _PC_MAX_INPUT            3
 133 #define _PC_NAME_MAX             4
 134 #define _PC_PATH_MAX             5
 135 #define _PC_PIPE_BUF             6
 136 #define _PC_CHOWN_RESTRICTED     7
 137 #define _PC_NO_TRUNC             8
 138 #define _PC_VDISABLE             9
 139
 140 #if __POSIX_VISIBLE >= 199309
 141 #define _PC_ASYNC_IO            53
 142 #define _PC_PRIO_IO             54
 143 #define _PC_SYNC_IO             55
 144 #endif
 145
 146 #if __POSIX_VISIBLE >= 200112
 147 #define _PC_ALLOC_SIZE_MIN      10
 148 #define _PC_FILESIZEBITS        12
 149 #define _PC_REC_INCR_XFER_SIZE  14
 150 #define _PC_REC_MAX_XFER_SIZE   15
 151 #define _PC_REC_MIN_XFER_SIZE   16
 152 #define _PC_REC_XFER_ALIGN      17
 153 #define _PC_SYMLINK_MAX         18
 154 #endif
 155
 156 #if __BSD_VISIBLE
 157 #define _PC_ACL_EXTENDED        59
 158 #define _PC_ACL_PATH_MAX        60
 159 #define _PC_CAP_PRESENT         61
 160 #define _PC_INF_PRESENT         62
 161 #define _PC_MAC_PRESENT         63
 162 #endif
 163
 164 /* From OpenSolaris, used by SEEK_DATA/SEEK_HOLE. */
 165 #define _PC_MIN_HOLE_SIZE       21
 166
 167 #if __BSD_VISIBLE
 168 /*
 169  * rfork() options.
 170  *
 171  * XXX currently, operations without RFPROC set are not supported.
 172  */
 173 #define RFNAMEG         (1<<0)  /* UNIMPL new plan9 `name space' */
 174 #define RFENVG          (1<<1)  /* UNIMPL copy plan9 `env space' */
 175 #define RFFDG           (1<<2)  /* copy fd table */
 176 #define RFNOTEG         (1<<3)  /* UNIMPL create new plan9 `note group' */
 177 #define RFPROC          (1<<4)  /* change child (else changes curproc) */
 178 #define RFMEM           (1<<5)  /* share `address space' */
 179 #define RFNOWAIT        (1<<6)  /* parent need not wait() on child */
 180 #define RFCNAMEG        (1<<10) /* UNIMPL zero plan9 `name space' */
 181 #define RFCENVG         (1<<11) /* UNIMPL zero plan9 `env space' */
 182 #define RFCFDG          (1<<12) /* zero fd table */
 183 #define RFTHREAD        (1<<13) /* enable kernel thread support */
 184 #define RFSIGSHARE      (1<<14) /* share signal handlers */
 185 #define RFLINUXTHPN     (1<<16) /* do linux clone exit parent notification */
 186 #define RFPGLOCK        (1<<30) /* process group interlock for signal race */
 187 #define RFPPWAIT        (1<<31) /* parent sleeps until child exits (vfork) */
 188 #define RFKERNELONLY    (RFPGLOCK | RFPPWAIT)
 189
 190 /*
 191  * Extended exit extexit() operation modes.
 192  */
 193 /* Types of action to communicate exit */
 194 #define EXTEXIT_SIMPLE  0
 195 #define EXTEXIT_SETINT  1
 196 #define EXTEXIT_ACTION(f) ((f) & 0xffff)
 197 /* Types describing what to exit */
 198 #define EXTEXIT_PROC    (0<<16)
 199 #define EXTEXIT_LWP     (1<<16)
 200 #define EXTEXIT_WHO(f)  ((f) & (0xffff<<16))
 201
 202
 203 /*
 204  * Parameters for the creation of a new lwp.
 205  */
 206 struct lwp_params {
 207         void (*func)(void *);   /* Function to start execution */
 208         void *arg;              /* Parameter to this function */
 209         void *stack;            /* Stack address to use */
 210         lwpid_t *tid1;          /* Address to copy out new tid */
 211         lwpid_t *tid2;          /* Same */
 212 };
 213
 214 #endif /* __BSD_VISIBLE */
 215
 216 #endif /* !_SYS_UNISTD_H_ */