usr.bin/uname/uname.c

   1 /*      $NetBSD: uname.c,v 1.11 2011/09/06 18:35:13 joerg 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 1.11 2011/09/06 18:35:13 joerg 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 #if defined(__minix)
  48 #include <string.h>
  49 #else
  50 #include <sys/sysctl.h>
  51 #endif /* !defined(__minix) */
  52 #include <sys/utsname.h>
  53
  54 __dead static void usage(void);
  55
  56 /* Note that PRINT_MACHINE_ARCH is excluded from PRINT_ALL! */
  57 #define PRINT_SYSNAME           0x01
  58 #define PRINT_NODENAME          0x02
  59 #define PRINT_RELEASE           0x04
  60 #define PRINT_VERSION           0x08
  61 #define PRINT_MACHINE           0x10
  62 #define PRINT_MACHINE_ARCH      0x20
  63 #define PRINT_ALL               \
  64     (PRINT_SYSNAME|PRINT_NODENAME|PRINT_RELEASE|PRINT_VERSION|PRINT_MACHINE)
  65
  66 int
  67 main(int argc, char **argv)
  68 {
  69         struct utsname u;
  70         char machine_arch[SYS_NMLN];
  71         int c;
  72         int space = 0;
  73         int print_mask = 0;
  74
  75         (void)setlocale(LC_ALL, "");
  76
  77         while ((c = getopt(argc,argv,"amnprsv")) != -1) {
  78                 switch (c) {
  79                 case 'a':
  80                         print_mask |= PRINT_ALL;
  81                         break;
  82                 case 'm':
  83                         print_mask |= PRINT_MACHINE;
  84                         break;
  85                 case 'n':
  86                         print_mask |= PRINT_NODENAME;
  87                         break;
  88                 case 'p':
  89                         print_mask |= PRINT_MACHINE_ARCH;
  90                         break;
  91                 case 'r':
  92                         print_mask |= PRINT_RELEASE;
  93                         break;
  94                 case 's':
  95                         print_mask |= PRINT_SYSNAME;
  96                         break;
  97                 case 'v':
  98                         print_mask |= PRINT_VERSION;
  99                         break;
 100                 default:
 101                         usage();
 102                         /* NOTREACHED */
 103                 }
 104         }
 105
 106         if (optind != argc) {
 107                 usage();
 108                 /* NOTREACHED */
 109         }
 110
 111         if (!print_mask) {
 112                 print_mask = PRINT_SYSNAME;
 113         }
 114
 115         if (uname(&u) != 0) {
 116                 err(EXIT_FAILURE, "uname");
 117                 /* NOTREACHED */
 118         }
 119         if (print_mask & PRINT_MACHINE_ARCH) {
 120 #if defined(__minix)
 121                 strlcpy(machine_arch, u.arch, sizeof(machine_arch));
 122 #else
 123                 int mib[2] = { CTL_HW, HW_MACHINE_ARCH };
 124                 size_t len = sizeof (machine_arch);
 125
 126                 if (sysctl(mib, sizeof (mib) / sizeof (mib[0]), machine_arch,
 127                     &len, NULL, 0) < 0)
 128                         err(EXIT_FAILURE, "sysctl");
 129 #endif /* defined(__minix) */
 130         }
 131
 132         if (print_mask & PRINT_SYSNAME) {
 133                 space++;
 134                 fputs(u.sysname, stdout);
 135         }
 136         if (print_mask & PRINT_NODENAME) {
 137                 if (space++) putchar(' ');
 138                 fputs(u.nodename, stdout);
 139         }
 140         if (print_mask & PRINT_RELEASE) {
 141                 if (space++) putchar(' ');
 142                 fputs(u.release, stdout);
 143         }
 144         if (print_mask & PRINT_VERSION) {
 145                 if (space++) putchar(' ');
 146                 fputs(u.version, stdout);
 147         }
 148         if (print_mask & PRINT_MACHINE) {
 149                 if (space++) putchar(' ');
 150                 fputs(u.machine, stdout);
 151         }
 152         if (print_mask & PRINT_MACHINE_ARCH) {
 153                 if (space++) putchar(' ');
 154                 fputs(machine_arch, stdout);
 155         }
 156         putchar('\n');
 157
 158         exit(EXIT_SUCCESS);
 159         /* NOTREACHED */
 160 }
 161
 162 static void
 163 usage(void)
 164 {
 165         fprintf(stderr, "usage: uname [-amnprsv]\n");
 166         exit(EXIT_FAILURE);
 167 }