uname/uname.c

   1 /*      $NetBSD: uname.c,v 1.10 1998/11/09 13:24:05 kleink Exp $        */
   2
   3 /*
   4  * Copyright (c) 1994 Winning Strategies, Inc.
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. All advertising materials mentioning features or use of this software
  16  *    must display the following acknowledgement:
  17  *      This product includes software developed by Winning Strategies, Inc.
  18  * 4. The name of Winning Strategies, Inc. may not be used to endorse or
  19  *    promote products derived from this software without specific prior
  20  *    written permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  23  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  24  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  25  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  26  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  27  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  28  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  29  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  30  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  31  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32  */
  33
  34 #include <sys/cdefs.h>
  35 #ifndef lint
  36 __RCSID("$NetBSD: uname.c,v 1.10 1998/11/09 13:24:05 kleink Exp $");
  37 #endif /* not lint */
  38
  39 #include <sys/param.h>
  40 #include <limits.h>
  41 #include <locale.h>
  42 #include <stdio.h>
  43 #include <stdlib.h>
  44 #include <unistd.h>
  45 #include <err.h>
  46
  47 #include <sys/sysctl.h>
  48 #include <sys/utsname.h>
  49
  50 #ifdef __APPLE__
  51 #include <get_compat.h>
  52 #else  /* !__APPLE__ */
  53 #define COMPAT_MODE(a,b) (1)
  54 #endif /* __APPLE__ */
  55
  56 int     main __P((int, char **));
  57 static void usage __P((void));
  58
  59 /* Note that PRINT_MACHINE_ARCH is excluded from PRINT_ALL! */
  60 #define PRINT_SYSNAME           0x01
  61 #define PRINT_NODENAME          0x02
  62 #define PRINT_RELEASE           0x04
  63 #define PRINT_VERSION           0x08
  64 #define PRINT_MACHINE           0x10
  65 #define PRINT_MACHINE_ARCH      0x20
  66 #define PRINT_ALL               \
  67     (PRINT_SYSNAME|PRINT_NODENAME|PRINT_RELEASE|PRINT_VERSION|PRINT_MACHINE)
  68
  69 int
  70 main(argc, argv)
  71         int argc;
  72         char **argv;
  73 {
  74         struct utsname u;
  75 #ifndef __APPLE__
  76         char machine_arch[SYS_NMLN];
  77 #endif /* !__APPLE__ */
  78         int c;
  79         int space = 0;
  80         int print_mask = 0;
  81
  82         (void)setlocale(LC_ALL, "");
  83
  84         while ((c = getopt(argc,argv,"amnprsv")) != -1) {
  85                 switch (c) {
  86                 case 'a':
  87                         print_mask |= PRINT_ALL;
  88 #ifdef __APPLE__
  89                         if (!COMPAT_MODE("bin/uname", "Unix2003")) {
  90                                 print_mask |= PRINT_MACHINE_ARCH;
  91                         }
  92 #endif /* __APPLE__ */
  93                         break;
  94                 case 'm':
  95                         print_mask |= PRINT_MACHINE;
  96                         break;
  97                 case 'n':
  98                         print_mask |= PRINT_NODENAME;
  99                         break;
 100                 case 'p':
 101                         print_mask |= PRINT_MACHINE_ARCH;
 102                         break;
 103                 case 'r':
 104                         print_mask |= PRINT_RELEASE;
 105                         break;
 106                 case 's':
 107                         print_mask |= PRINT_SYSNAME;
 108                         break;
 109                 case 'v':
 110                         print_mask |= PRINT_VERSION;
 111                         break;
 112                 default:
 113                         usage();
 114                         /* NOTREACHED */
 115                 }
 116         }
 117
 118         if (optind != argc) {
 119                 usage();
 120                 /* NOTREACHED */
 121         }
 122
 123         if (!print_mask) {
 124                 print_mask = PRINT_SYSNAME;
 125         }
 126
 127         if (uname(&u) != 0) {
 128                 err(EXIT_FAILURE, "uname");
 129                 /* NOTREACHED */
 130         }
 131 #ifndef __APPLE__
 132         if (print_mask & PRINT_MACHINE_ARCH) {
 133                 int mib[2] = { CTL_HW, HW_MACHINE_ARCH };
 134                 size_t len = sizeof (machine_arch);
 135
 136                 if (sysctl(mib, sizeof (mib) / sizeof (mib[0]), machine_arch,
 137                     &len, NULL, 0) < 0)
 138                         err(EXIT_FAILURE, "sysctl");
 139         }
 140 #else /* __APPLE__ */
 141         /*
 142          * Let's allow the user to override the output of uname via the shell environment.
 143          * This is a useful feature for cross-compiling (eg. during an OS bringup).
 144          * Otherwise, you have to hack your kernel with the desired strings.
 145          */
 146         {
 147                 char *s;
 148                 s = getenv ("UNAME_SYSNAME");  if (s) strncpy (u.sysname,  s, sizeof (u.sysname));
 149                 s = getenv ("UNAME_NODENAME"); if (s) strncpy (u.nodename, s, sizeof (u.nodename));
 150                 s = getenv ("UNAME_RELEASE");  if (s) strncpy (u.release,  s, sizeof (u.release));
 151                 s = getenv ("UNAME_VERSION");  if (s) strncpy (u.version,  s, sizeof (u.version));
 152                 s = getenv ("UNAME_MACHINE");  if (s) strncpy (u.machine,  s, sizeof (u.machine));
 153         }
 154 #endif /* !__APPLE__ */
 155
 156         if (print_mask & PRINT_SYSNAME) {
 157                 space++;
 158                 fputs(u.sysname, stdout);
 159         }
 160         if (print_mask & PRINT_NODENAME) {
 161                 if (space++) putchar(' ');
 162                 fputs(u.nodename, stdout);
 163         }
 164         if (print_mask & PRINT_RELEASE) {
 165                 if (space++) putchar(' ');
 166                 fputs(u.release, stdout);
 167         }
 168         if (print_mask & PRINT_VERSION) {
 169                 if (space++) putchar(' ');
 170                 fputs(u.version, stdout);
 171         }
 172         if (print_mask & PRINT_MACHINE) {
 173                 if (space++) putchar(' ');
 174                 fputs(u.machine, stdout);
 175         }
 176         if (print_mask & PRINT_MACHINE_ARCH) {
 177                 if (space++) putchar(' ');
 178 #ifndef __APPLE__
 179                 fputs(machine_arch, stdout);
 180 #else
 181 #if   defined(__ppc__)
 182                 fputs("powerpc", stdout);
 183 #elif defined(__i386__)
 184                 fputs("i386", stdout);
 185 #else
 186                 fputs("unknown", stdout);
 187 #endif
 188 #endif /* __APPLE__ */
 189         }
 190         putchar('\n');
 191
 192         exit(EXIT_SUCCESS);
 193         /* NOTREACHED */
 194 }
 195
 196 static void
 197 usage()
 198 {
 199         fprintf(stderr, "usage: uname [-amnprsv]\n");
 200         exit(EXIT_FAILURE);
 201 }