dbm/include/ncompat.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. ***REMOVED*** - see
  14  *    ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change
  15  * 4. Neither the name of the University nor the names of its contributors
  16  *    may be used to endorse or promote products derived from this software
  17  *    without specific prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  29  * SUCH DAMAGE.
  30  *
  31  *      @(#)compat.h    8.13 (Berkeley) 2/21/94
  32  */
  33
  34 #ifndef _COMPAT_H_
  35 #define _COMPAT_H_
  36
  37 #include <sys/types.h>
  38
  39 /*
  40  * If your system doesn't typedef u_long, u_short, or u_char, change
  41  * the 0 to a 1.
  42  */
  43 #if 0
  44 typedef unsigned char   u_char;         /* 4.[34]BSD names. */
  45 typedef unsigned int    u_int;
  46 typedef unsigned long   u_long;
  47 typedef unsigned short  u_short;
  48 #endif
  49
  50 /* If your system doesn't typedef size_t, change the 0 to a 1. */
  51 #if 0
  52 typedef unsigned int    size_t;         /* POSIX, 4.[34]BSD names. */
  53 #endif
  54
  55 /* If your system doesn't typedef ssize_t, change the 0 to a 1. */
  56 #if 0
  57 typedef int             ssize_t;        /* POSIX names. */
  58 #endif
  59
  60 /*
  61  * If your system doesn't have the POSIX type for a signal mask,
  62  * change the 0 to a 1.
  63  */
  64 #if 0                                   /* POSIX 1003.1 signal mask type. */
  65 typedef unsigned int    sigset_t;
  66 #endif
  67
  68 /*
  69  * If your system's vsprintf returns a char *, not an int,
  70  * change the 0 to a 1.
  71  */
  72 #if defined (__sun) && !defined(__SVR4) /* SUNOS */
  73 #define VSPRINTF_CHARSTAR
  74 #endif
  75 /*
  76  * If you don't have POSIX 1003.1 signals, the signal code surrounding the
  77  * temporary file creation is intended to block all of the possible signals
  78  * long enough to create the file and unlink it.  All of this stuff is
  79  * intended to use old-style BSD calls to fake POSIX 1003.1 calls.
  80  */
  81 #ifdef  NO_POSIX_SIGNALS
  82 #define sigemptyset(set)        (*(set) = 0)
  83 #define sigfillset(set)         (*(set) = ~(sigset_t)0, 0)
  84 #define sigaddset(set,signo)    (*(set) |= sigmask(signo), 0)
  85 #define sigdelset(set,signo)    (*(set) &= ~sigmask(signo), 0)
  86 #define sigismember(set,signo)  ((*(set) & sigmask(signo)) != 0)
  87
  88 #define SIG_BLOCK       1
  89 #define SIG_UNBLOCK     2
  90 #define SIG_SETMASK     3
  91
  92 static int __sigtemp;           /* For the use of sigprocmask */
  93
  94 /* Repeated test of oset != NULL is to avoid "*0". */
  95 #define sigprocmask(how, set, oset)                                     \
  96         ((__sigtemp =                                                   \
  97         (((how) == SIG_BLOCK) ?                                         \
  98                 sigblock(0) | *(set) :                                  \
  99         (((how) == SIG_UNBLOCK) ?                                       \
 100                 sigblock(0) & ~(*(set)) :                               \
 101         ((how) == SIG_SETMASK ?                                         \
 102                 *(set) : sigblock(0))))),                               \
 103         ((oset) ? (*(oset ? oset : set) = sigsetmask(__sigtemp)) :      \
 104                 sigsetmask(__sigtemp)), 0)
 105 #endif
 106
 107 /*
 108  * If your system doesn't have an include file with the appropriate
 109  * byte order set, make sure you specify the correct one.
 110  */
 111 #ifndef BYTE_ORDER
 112 #define LITTLE_ENDIAN   1234            /* LSB first: i386, vax */
 113 #define BIG_ENDIAN      4321            /* MSB first: 68000, ibm, net */
 114 #define BYTE_ORDER      BIG_ENDIAN      /* Set for your system. */
 115 #endif
 116
 117 #if defined(SYSV) || defined(SYSTEM5) || defined(__sun)
 118 #define index(a, b)             strchr(a, b)
 119 #define rindex(a, b)            strrchr(a, b)
 120 #define bzero(a, b)             memset(a, 0, b)
 121 #define bcmp(a, b, n)           memcmp(a, b, n)
 122 #define bcopy(a, b, n)          memmove(b, a, n)
 123 #endif
 124
 125 #if defined(BSD) || defined(BSD4_3)
 126 #define strchr(a, b)            index(a, b)
 127 #define strrchr(a, b)           rindex(a, b)
 128 #define memcmp(a, b, n)         bcmp(a, b, n)
 129 #define memmove(a, b, n)        bcopy(b, a, n)
 130 #endif
 131
 132 /*
 133  * 32-bit machine.  The db routines are theoretically independent of
 134  * the size of u_shorts and u_longs, but I don't know that anyone has
 135  * ever actually tried it.  At a minimum, change the following #define's
 136  * if you are trying to compile on a different type of system.
 137  */
 138 #ifndef USHRT_MAX
 139 #define USHRT_MAX               0xFFFF
 140 #define ULONG_MAX               0xFFFFFFFF
 141 #endif
 142
 143 #ifndef O_ACCMODE                       /* POSIX 1003.1 access mode mask. */
 144 #define O_ACCMODE       (O_RDONLY|O_WRONLY|O_RDWR)
 145 #endif
 146
 147 #ifndef _POSIX2_RE_DUP_MAX              /* POSIX 1003.2 RE limit. */
 148 #define _POSIX2_RE_DUP_MAX      255
 149 #endif
 150
 151 /*
 152  * If you can't provide lock values in the open(2) call.  Note, this
 153  * allows races to happen.
 154  */
 155 #ifndef O_EXLOCK                        /* 4.4BSD extension. */
 156 #define O_EXLOCK        0
 157 #endif
 158
 159 #ifndef O_SHLOCK                        /* 4.4BSD extension. */
 160 #define O_SHLOCK        0
 161 #endif
 162
 163 #ifndef EFTYPE
 164 #define EFTYPE          EINVAL          /* POSIX 1003.1 format errno. */
 165 #endif
 166
 167 #ifndef WCOREDUMP                       /* 4.4BSD extension */
 168 #define WCOREDUMP(a)    0
 169 #endif
 170
 171 #ifndef STDERR_FILENO
 172 #define STDIN_FILENO    0               /* ANSI C #defines */
 173 #define STDOUT_FILENO   1
 174 #define STDERR_FILENO   2
 175 #endif
 176
 177 #ifndef SEEK_END
 178 #define SEEK_SET        0               /* POSIX 1003.1 seek values */
 179 #define SEEK_CUR        1
 180 #define SEEK_END        2
 181 #endif
 182
 183 #ifndef _POSIX_VDISABLE                 /* POSIX 1003.1 disabling char. */
 184 #define _POSIX_VDISABLE 0               /* Some systems used 0. */
 185 #endif
 186
 187 #ifndef TCSASOFT                        /* 4.4BSD extension. */
 188 #define TCSASOFT        0
 189 #endif
 190
 191 #ifndef _POSIX2_RE_DUP_MAX              /* POSIX 1003.2 values. */
 192 #define _POSIX2_RE_DUP_MAX      255
 193 #endif
 194
 195 #ifndef NULL                            /* ANSI C #defines NULL everywhere. */
 196 #define NULL            0
 197 #endif
 198
 199 #ifndef MAX                             /* Usually found in <sys/param.h>. */
 200 #define MAX(_a,_b)      ((_a)<(_b)?(_b):(_a))
 201 #endif
 202 #ifndef MIN                             /* Usually found in <sys/param.h>. */
 203 #define MIN(_a,_b)      ((_a)<(_b)?(_a):(_b))
 204 #endif
 205
 206 /* Default file permissions. */
 207 #ifndef DEFFILEMODE                     /* 4.4BSD extension. */
 208 #define DEFFILEMODE     (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH)
 209 #endif
 210
 211 #ifndef __sun
 212 #ifndef S_ISDIR                         /* POSIX 1003.1 file type tests. */
 213 #define S_ISDIR(m)      ((m & 0170000) == 0040000)      /* directory */
 214 #define S_ISCHR(m)      ((m & 0170000) == 0020000)      /* char special */
 215 #define S_ISBLK(m)      ((m & 0170000) == 0060000)      /* block special */
 216 #define S_ISREG(m)      ((m & 0170000) == 0100000)      /* regular file */
 217 #define S_ISFIFO(m)     ((m & 0170000) == 0010000)      /* fifo */
 218 #endif
 219 #ifndef S_ISLNK                         /* BSD POSIX 1003.1 extensions */
 220 #define S_ISLNK(m)      ((m & 0170000) == 0120000)      /* symbolic link */
 221 #define S_ISSOCK(m)     ((m & 0170000) == 0140000)      /* socket */
 222 #endif
 223 #endif /* __sun */
 224
 225 /* The type of a va_list. */
 226 #ifndef _BSD_VA_LIST_                   /* 4.4BSD #define. */
 227 #define _BSD_VA_LIST_   char *
 228 #endif
 229
 230 #endif /* !_COMPAT_H_ */