contrib/top/os.h

   1 /*
   2  * Copyright (c) 1984 through 2008, William LeFebvre
   3  * 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 are met:
   7  *
   8  *     * Redistributions of source code must retain the above copyright
   9  * notice, this list of conditions and the following disclaimer.
  10  *
  11  *     * Redistributions in binary form must reproduce the above
  12  * copyright notice, this list of conditions and the following disclaimer
  13  * in the documentation and/or other materials provided with the
  14  * distribution.
  15  *
  16  *     * Neither the name of William LeFebvre nor the names of other
  17  * contributors may be used to endorse or promote products derived from
  18  * this software without specific prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  21  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  22  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  23  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  24  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  25  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  26  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  27  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  28  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  29  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  30  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  31  */
  32
  33 #include "config.h"
  34
  35 #include <sys/types.h>
  36 #include <sys/param.h>
  37 #include <stdio.h>
  38
  39 #ifdef HAVE_LIMITS_H
  40 #include <limits.h>
  41 #endif
  42
  43 #if TIME_WITH_SYS_TIME
  44 # include <sys/time.h>
  45 # include <time.h>
  46 #else
  47 # if HAVE_SYS_TIME_H
  48 #  include <sys/time.h>
  49 # else
  50 #  include <time.h>
  51 # endif
  52 #endif
  53
  54 #if STDC_HEADERS
  55 #include <string.h>
  56 #include <stdlib.h>
  57 #define setbuffer(f, b, s)      setvbuf((f), (b), (b) ? _IOFBF : _IONBF, (s))
  58 #define memzero(a, b)           memset((a), 0, (b))
  59 #else /* !STDC_HEADERS */
  60 #ifndef HAVE_STRCHR
  61 #define strchr(a, b)            index((a), (b))
  62 #define strrchr(a, b)           rindex((a), (b))
  63 #endif /* HAVE_STRCHR */
  64 #ifdef HAVE_MEMCPY
  65 #define memzero(a, b)           memset((a), 0, (b))
  66 #else
  67 #define memcpy(a, b, c)         bcopy((b), (a), (c))
  68 #define memzero(a, b)           bzero((a), (b))
  69 #define memcmp(a, b, c)         bcmp((a), (b), (c))
  70 #endif /* HAVE_MEMCPY */
  71 #ifdef HAVE_STRINGS_H
  72 #include <strings.h>
  73 #else
  74 #ifdef HAVE_STRING_H
  75 #include <string.h>
  76 #endif
  77 #endif
  78 char *getenv();
  79 caddr_t malloc();
  80 #endif /* STDC_HEADERS */
  81
  82 /* If snprintf or vsnprintf aren't available, we substitute our own.
  83    But we have to include stdarg in order to be able to define them.
  84 */
  85 #ifdef HAVE_STDARG_H
  86 #include <stdarg.h>
  87 #ifndef HAVE_SNPRINTF
  88 int ap_snprintf(char *buf, size_t len, const char *format,...);
  89 #define snprintf ap_snprintf
  90 #endif
  91 #ifndef HAVE_VSNPRINTF
  92 int ap_vsnprintf(char *buf, size_t len, const char *format,va_list ap);
  93 #define vsnprintf ap_vsnprintf
  94 #endif
  95 #endif
  96
  97 #if !HAVE_PID_T
  98 typedef long pid_t;
  99 #endif
 100 #if !HAVE_TIME_T
 101 typedef long time_t;
 102 #endif
 103 #if !HAVE_UID_T
 104 typedef long uid_t;
 105 #endif
 106
 107 #ifndef INT_MAX
 108 #define INT_MAX (0x7fffffff)
 109 #endif
 110
 111 #ifndef UINT_MAX
 112 #define UINT_MAX (0xffffffffU)
 113 #endif
 114
 115 /* we must have both sighold and sigrelse to use them */
 116 #if defined(HAVE_SIGHOLD) && !defined(HAVE_SIGRELSE)
 117 #undef HAVE_SIGHOLD
 118 #endif
 119
 120 #ifdef HAVE_UNISTD_H
 121 #include <unistd.h>
 122 #endif
 123
 124 #ifdef HAVE_SYSEXITS_H
 125 #include <sysexits.h>
 126 #else
 127 #define EX_OK           0       /* successful termination */
 128 #define EX_USAGE        64      /* command line usage error */
 129 #define EX_DATAERR      65      /* data format error */
 130 #define EX_NOINPUT      66      /* cannot open input */
 131 #define EX_NOUSER       67      /* addressee unknown */
 132 #define EX_NOHOST       68      /* host name unknown */
 133 #define EX_UNAVAILABLE  69      /* service unavailable */
 134 #define EX_SOFTWARE     70      /* internal software error */
 135 #define EX_OSERR        71      /* system error (e.g., can't fork) */
 136 #define EX_OSFILE       72      /* critical OS file missing */
 137 #define EX_CANTCREAT    73      /* can't create (user) output file */
 138 #define EX_IOERR        74      /* input/output error */
 139 #define EX_TEMPFAIL     75      /* temp failure; user is invited to retry */
 140 #define EX_PROTOCOL     76      /* remote error in protocol */
 141 #define EX_NOPERM       77      /* permission denied */
 142 #define EX_CONFIG       78      /* configuration error */
 143 #endif