db.1.85/PORT/bsdi.1.0/include/compat.h

   1 /*-
   2  * Copyright (c) 1991, 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  * 3. All advertising materials mentioning features or use of this software
  14  *    must display the following acknowledgement:
  15  *      This product includes software developed by the University of
  16  *      California, Berkeley and its contributors.
  17  * 4. Neither the name of the University nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  *
  33  *      @(#)compat.h    8.13 (Berkeley) 2/21/94
  34  */
  35
  36 #ifndef _COMPAT_H_
  37 #define _COMPAT_H_
  38
  39 #include <sys/types.h>
  40
  41 /*
  42  * If your system doesn't typedef u_long, u_short, or u_char, change
  43  * the 0 to a 1.
  44  */
  45 #if 0
  46 typedef unsigned char   u_char;         /* 4.[34]BSD names. */
  47 typedef unsigned int    u_int;
  48 typedef unsigned long   u_long;
  49 typedef unsigned short  u_short;
  50 #endif
  51
  52 /* If your system doesn't typedef size_t, change the 0 to a 1. */
  53 #if 0
  54 typedef unsigned int    size_t;         /* POSIX, 4.[34]BSD names. */
  55 #endif
  56
  57 /* If your system doesn't typedef ssize_t, change the 0 to a 1. */
  58 #if 0
  59 typedef int             ssize_t;        /* POSIX names. */
  60 #endif
  61
  62 /*
  63  * If your system doesn't have the POSIX type for a signal mask,
  64  * change the 0 to a 1.
  65  */
  66 #if 0                                   /* POSIX 1003.1 signal mask type. */
  67 typedef unsigned int    sigset_t;
  68 #endif
  69
  70 /*
  71  * If your system's vsprintf returns a char *, not an int,
  72  * change the 0 to a 1.
  73  */
  74 #if 0
  75 #define VSPRINTF_CHARSTAR
  76 #endif
  77
  78 /*
  79  * If you don't have POSIX 1003.1 signals, the signal code surrounding the
  80  * temporary file creation is intended to block all of the possible signals
  81  * long enough to create the file and unlink it.  All of this stuff is
  82  * intended to use old-style BSD calls to fake POSIX 1003.1 calls.
  83  */
  84 #ifdef  NO_POSIX_SIGNALS
  85 #define sigemptyset(set)        (*(set) = 0)
  86 #define sigfillset(set)         (*(set) = ~(sigset_t)0, 0)
  87 #define sigaddset(set,signo)    (*(set) |= sigmask(signo), 0)
  88 #define sigdelset(set,signo)    (*(set) &= ~sigmask(signo), 0)
  89 #define sigismember(set,signo)  ((*(set) & sigmask(signo)) != 0)
  90
  91 #define SIG_BLOCK       1
  92 #define SIG_UNBLOCK     2
  93 #define SIG_SETMASK     3
  94
  95 static int __sigtemp;           /* For the use of sigprocmask */
  96
  97 /* Repeated test of oset != NULL is to avoid "*0". */
  98 #define sigprocmask(how, set, oset)                                     \
  99         ((__sigtemp =                                                   \
 100         (((how) == SIG_BLOCK) ?                                         \
 101                 sigblock(0) | *(set) :                                  \
 102         (((how) == SIG_UNBLOCK) ?                                       \
 103                 sigblock(0) & ~(*(set)) :                               \
 104         ((how) == SIG_SETMASK ?                                         \
 105                 *(set) : sigblock(0))))),                               \
 106         ((oset) ? (*(oset ? oset : set) = sigsetmask(__sigtemp)) :      \
 107                 sigsetmask(__sigtemp)), 0)
 108 #endif
 109
 110 /*
 111  * If your system doesn't have an include file with the appropriate
 112  * byte order set, make sure you specify the correct one.
 113  */
 114 #ifndef BYTE_ORDER
 115 #define LITTLE_ENDIAN   1234            /* LSB first: i386, vax */
 116 #define BIG_ENDIAN      4321            /* MSB first: 68000, ibm, net */
 117 #define BYTE_ORDER      LITTLE_ENDIAN   /* Set for your system. */
 118 #endif
 119
 120 #if defined(SYSV) || defined(SYSTEM5)
 121 #define index(a, b)             strchr(a, b)
 122 #define rindex(a, b)            strrchr(a, b)
 123 #define bzero(a, b)             memset(a, 0, b)
 124 #define bcmp(a, b, n)           memcmp(a, b, n)
 125 #define bcopy(a, b, n)          memmove(b, a, n)
 126 #endif
 127
 128 #if defined(BSD) || defined(BSD4_3)
 129 #define strchr(a, b)            index(a, b)
 130 #define strrchr(a, b)           rindex(a, b)
 131 #define memcmp(a, b, n)         bcmp(a, b, n)
 132 #define memmove(a, b, n)        bcopy(b, a, n)
 133 #endif
 134
 135 /*
 136  * 32-bit machine.  The db routines are theoretically independent of
 137  * the size of u_shorts and u_longs, but I don't know that anyone has
 138  * ever actually tried it.  At a minimum, change the following #define's
 139  * if you are trying to compile on a different type of system.
 140  */
 141 #ifndef USHRT_MAX
 142 #define USHRT_MAX               0xFFFF
 143 #define ULONG_MAX               0xFFFFFFFF
 144 #endif
 145
 146 #ifndef O_ACCMODE                       /* POSIX 1003.1 access mode mask. */
 147 #define O_ACCMODE       (O_RDONLY|O_WRONLY|O_RDWR)
 148 #endif
 149
 150 #ifndef _POSIX2_RE_DUP_MAX              /* POSIX 1003.2 RE limit. */
 151 #define _POSIX2_RE_DUP_MAX      255
 152 #endif
 153
 154 /*
 155  * If you can't provide lock values in the open(2) call.  Note, this
 156  * allows races to happen.
 157  */
 158 #ifndef O_EXLOCK                        /* 4.4BSD extension. */
 159 #define O_EXLOCK        0
 160 #endif
 161
 162 #ifndef O_SHLOCK                        /* 4.4BSD extension. */
 163 #define O_SHLOCK        0
 164 #endif
 165
 166 #ifndef EFTYPE
 167 #define EFTYPE          EINVAL          /* POSIX 1003.1 format errno. */
 168 #endif
 169
 170 #ifndef WCOREDUMP                       /* 4.4BSD extension */
 171 #define WCOREDUMP(a)    0
 172 #endif
 173
 174 #ifndef STDERR_FILENO
 175 #define STDIN_FILENO    0               /* ANSI C #defines */
 176 #define STDOUT_FILENO   1
 177 #define STDERR_FILENO   2
 178 #endif
 179
 180 #ifndef SEEK_END
 181 #define SEEK_SET        0               /* POSIX 1003.1 seek values */
 182 #define SEEK_CUR        1
 183 #define SEEK_END        2
 184 #endif
 185
 186 #ifndef _POSIX_VDISABLE                 /* POSIX 1003.1 disabling char. */
 187 #define _POSIX_VDISABLE 0               /* Some systems used 0. */
 188 #endif
 189
 190 #ifndef TCSASOFT                        /* 4.4BSD extension. */
 191 #define TCSASOFT        0
 192 #endif
 193
 194 #ifndef _POSIX2_RE_DUP_MAX              /* POSIX 1003.2 values. */
 195 #define _POSIX2_RE_DUP_MAX      255
 196 #endif
 197
 198 #ifndef NULL                            /* ANSI C #defines NULL everywhere. */
 199 #define NULL            0
 200 #endif
 201
 202 #ifndef MAX                             /* Usually found in <sys/param.h>. */
 203 #define MAX(_a,_b)      ((_a)<(_b)?(_b):(_a))
 204 #endif
 205 #ifndef MIN                             /* Usually found in <sys/param.h>. */
 206 #define MIN(_a,_b)      ((_a)<(_b)?(_a):(_b))
 207 #endif
 208
 209 /* Default file permissions. */
 210 #ifndef DEFFILEMODE                     /* 4.4BSD extension. */
 211 #define DEFFILEMODE     (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH)
 212 #endif
 213
 214 #ifndef S_ISDIR                         /* POSIX 1003.1 file type tests. */
 215 #define S_ISDIR(m)      ((m & 0170000) == 0040000)      /* directory */
 216 #define S_ISCHR(m)      ((m & 0170000) == 0020000)      /* char special */
 217 #define S_ISBLK(m)      ((m & 0170000) == 0060000)      /* block special */
 218 #define S_ISREG(m)      ((m & 0170000) == 0100000)      /* regular file */
 219 #define S_ISFIFO(m)     ((m & 0170000) == 0010000)      /* fifo */
 220 #endif
 221 #ifndef S_ISLNK                         /* BSD POSIX 1003.1 extensions */
 222 #define S_ISLNK(m)      ((m & 0170000) == 0120000)      /* symbolic link */
 223 #define S_ISSOCK(m)     ((m & 0170000) == 0140000)      /* socket */
 224 #endif
 225
 226 /* The type of a va_list. */
 227 #ifndef _BSD_VA_LIST_                   /* 4.4BSD #define. */
 228 #define _BSD_VA_LIST_   char *
 229 #endif
 230
 231 #endif /* !_COMPAT_H_ */