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 #ifdef __APPLE__
  47 #include <string.h>
  48 #endif /* __APPLE__ */
  49
  50 #include <sys/sysctl.h>
  51 #include <sys/utsname.h>
  52
  53 #ifdef __APPLE__
  54 #include <get_compat.h>
  55 #else  /* !__APPLE__ */
  56 #define COMPAT_MODE(a,b) (1)
  57 #endif /* __APPLE__ */
  58
  59 int     main __P((int, char **));
  60 static void usage __P((void));
  61
  62 /* Note that PRINT_MACHINE_ARCH is excluded from PRINT_ALL! */
  63 #define PRINT_SYSNAME           0x01
  64 #define PRINT_NODENAME          0x02
  65 #define PRINT_RELEASE           0x04
  66 #define PRINT_VERSION           0x08
  67 #define PRINT_MACHINE           0x10
  68 #define PRINT_MACHINE_ARCH      0x20
  69 #define PRINT_ALL               \
  70     (PRINT_SYSNAME|PRINT_NODENAME|PRINT_RELEASE|PRINT_VERSION|PRINT_MACHINE)
  71
  72 int
  73 main(argc, argv)
  74         int argc;
  75         char **argv;
  76 {
  77         struct utsname u;
  78 #ifndef __APPLE__
  79         char machine_arch[SYS_NMLN];
  80 #endif /* !__APPLE__ */
  81         int c;
  82         int space = 0;
  83         int print_mask = 0;
  84
  85         (void)setlocale(LC_ALL, "");
  86
  87         while ((c = getopt(argc,argv,"amnprsv")) != -1) {
  88                 switch (c) {
  89                 case 'a':
  90                         print_mask |= PRINT_ALL;
  91 #ifdef __APPLE__
  92                         if (!COMPAT_MODE("bin/uname", "Unix2003")) {
  93                                 print_mask |= PRINT_MACHINE_ARCH;
  94                         }
  95 #endif /* __APPLE__ */
  96                         break;
  97                 case 'm':
  98                         print_mask |= PRINT_MACHINE;
  99                         break;
 100                 case 'n':
 101                         print_mask |= PRINT_NODENAME;
 102                         break;
 103                 case 'p':
 104                         print_mask |= PRINT_MACHINE_ARCH;
 105                         break;
 106                 case 'r':
 107                         print_mask |= PRINT_RELEASE;
 108                         break;
 109                 case 's':
 110                         print_mask |= PRINT_SYSNAME;
 111                         break;
 112                 case 'v':
 113                         print_mask |= PRINT_VERSION;
 114                         break;
 115                 default:
 116                         usage();
 117                         /* NOTREACHED */
 118                 }
 119         }
 120
 121         if (optind != argc) {
 122                 usage();
 123                 /* NOTREACHED */
 124         }
 125
 126         if (!print_mask) {
 127                 print_mask = PRINT_SYSNAME;
 128         }
 129
 130         if (uname(&u) != 0) {
 131                 err(EXIT_FAILURE, "uname");
 132                 /* NOTREACHED */
 133         }
 134 #ifndef __APPLE__
 135         if (print_mask & PRINT_MACHINE_ARCH) {
 136                 int mib[2] = { CTL_HW, HW_MACHINE_ARCH };
 137                 size_t len = sizeof (machine_arch);
 138
 139                 if (sysctl(mib, sizeof (mib) / sizeof (mib[0]), machine_arch,
 140                     &len, NULL, 0) < 0)
 141                         err(EXIT_FAILURE, "sysctl");
 142         }
 143 #endif /* !__APPLE__ */
 144
 145 #ifdef __APPLE__
 146         /*
 147          * Let's allow the user to override the output of uname via the shell environment.
 148          * This is a useful feature for cross-compiling (eg. during an OS bringup).
 149          * Otherwise, you have to hack your kernel with the desired strings.
 150          */
 151         {
 152                 char *s;
 153                 s = getenv ("UNAME_SYSNAME");  if (s) strncpy (u.sysname,  s, sizeof (u.sysname));
 154                 s = getenv ("UNAME_NODENAME"); if (s) strncpy (u.nodename, s, sizeof (u.nodename));
 155                 s = getenv ("UNAME_RELEASE");  if (s) strncpy (u.release,  s, sizeof (u.release));
 156                 s = getenv ("UNAME_VERSION");  if (s) strncpy (u.version,  s, sizeof (u.version));
 157                 s = getenv ("UNAME_MACHINE");  if (s) strncpy (u.machine,  s, sizeof (u.machine));
 158         }
 159 #endif /* __APPLE__ */
 160
 161         if (print_mask & PRINT_SYSNAME) {
 162                 space++;
 163                 fputs(u.sysname, stdout);
 164         }
 165         if (print_mask & PRINT_NODENAME) {
 166                 if (space++) putchar(' ');
 167                 fputs(u.nodename, stdout);
 168         }
 169         if (print_mask & PRINT_RELEASE) {
 170                 if (space++) putchar(' ');
 171                 fputs(u.release, stdout);
 172         }
 173         if (print_mask & PRINT_VERSION) {
 174                 if (space++) putchar(' ');
 175                 fputs(u.version, stdout);
 176         }
 177         if (print_mask & PRINT_MACHINE) {
 178                 if (space++) putchar(' ');
 179                 fputs(u.machine, stdout);
 180         }
 181         if (print_mask & PRINT_MACHINE_ARCH) {
 182                 if (space++) putchar(' ');
 183 #ifndef __APPLE__
 184                 fputs(machine_arch, stdout);
 185 #else
 186 #if defined(__ppc__) || defined(__ppc64__)
 187                 fputs("powerpc", stdout);
 188 #elif defined(__i386__) || defined(__x86_64__)
 189                 fputs("i386", stdout);
 190 #elif defined(__arm__) || defined(__arm64__)
 191                 fputs("arm", stdout);
 192 #else
 193                 fputs("unknown", stdout);
 194 #endif
 195 #endif /* __APPLE__ */
 196         }
 197         putchar('\n');
 198
 199         exit(EXIT_SUCCESS);
 200         /* NOTREACHED */
 201 }
 202
 203 static void
 204 usage()
 205 {
 206         fprintf(stderr, "usage: uname [-amnprsv]\n");
 207         exit(EXIT_FAILURE);
 208 }