src/uname.c

   1 /* uname -- print system information
   2
   3    Copyright 1989, 1992, 1993, 1996, 1997, 1999, 2000, 2001, 2002 Free
   4    Software Foundation, Inc.
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 2, or (at your option)
   9    any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program; if not, write to the Free Software Foundation,
  18    Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  19
  20 /* Written by David MacKenzie <djm@gnu.ai.mit.edu> */
  21
  22 #include <config.h>
  23 #include <stdio.h>
  24 #include <sys/types.h>
  25 #include <sys/utsname.h>
  26 #include <getopt.h>
  27
  28 #if HAVE_SYSINFO && HAVE_SYS_SYSTEMINFO_H
  29 # include <sys/systeminfo.h>
  30 #endif
  31
  32 #if HAVE_SYSCTL && HAVE_SYS_SYSCTL_H
  33 # include <sys/param.h> /* needed for OpenBSD 3.0 */
  34 # include <sys/sysctl.h>
  35 # ifdef HW_MODEL
  36 #  ifdef HW_MACHINE_ARCH
  37 /* E.g., FreeBSD 4.5, NetBSD 1.5.2 */
  38 #   define UNAME_HARDWARE_PLATFORM HW_MODEL
  39 #   define UNAME_PROCESSOR HW_MACHINE_ARCH
  40 #  else
  41 /* E.g., OpenBSD 3.0 */
  42 #   define UNAME_PROCESSOR HW_MODEL
  43 #  endif
  44 # endif
  45 #endif
  46
  47 #include "system.h"
  48 #include "error.h"
  49 #include "closeout.h"
  50
  51 /* The official name of this program (e.g., no `g' prefix).  */
  52 #define PROGRAM_NAME "uname"
  53
  54 #define AUTHORS "David MacKenzie"
  55
  56 /* Values that are bitwise or'd into `toprint'. */
  57 /* Kernel name. */
  58 #define PRINT_KERNEL_NAME 1
  59
  60 /* Node name on a communications network. */
  61 #define PRINT_NODENAME 2
  62
  63 /* Kernel release. */
  64 #define PRINT_KERNEL_RELEASE 4
  65
  66 /* Kernel version. */
  67 #define PRINT_KERNEL_VERSION 8
  68
  69 /* Machine hardware name. */
  70 #define PRINT_MACHINE 16
  71
  72 /* Processor type. */
  73 #define PRINT_PROCESSOR 32
  74
  75 /* Hardware platform.  */
  76 #define PRINT_HARDWARE_PLATFORM 64
  77
  78 /* Operating system.  */
  79 #define PRINT_OPERATING_SYSTEM 128
  80
  81 /* The name this program was run with, for error messages. */
  82 char *program_name;
  83
  84 static struct option const long_options[] =
  85 {
  86   {"all", no_argument, NULL, 'a'},
  87   {"kernel-name", no_argument, NULL, 's'},
  88   {"sysname", no_argument, NULL, 's'},  /* Obsolescent.  */
  89   {"nodename", no_argument, NULL, 'n'},
  90   {"kernel-release", no_argument, NULL, 'r'},
  91   {"release", no_argument, NULL, 'r'},  /* Obsolescent.  */
  92   {"kernel-version", no_argument, NULL, 'v'},
  93   {"machine", no_argument, NULL, 'm'},
  94   {"processor", no_argument, NULL, 'p'},
  95   {"hardware-platform", no_argument, NULL, 'i'},
  96   {"operating-system", no_argument, NULL, 'o'},
  97   {GETOPT_HELP_OPTION_DECL},
  98   {GETOPT_VERSION_OPTION_DECL},
  99   {NULL, 0, NULL, 0}
 100 };
 101
 102 void
 103 usage (int status)
 104 {
 105   if (status != 0)
 106     fprintf (stderr, _("Try `%s --help' for more information.\n"),
 107              program_name);
 108   else
 109     {
 110       printf (_("Usage: %s [OPTION]...\n"), program_name);
 111       fputs (_("\
 112 Print certain system information.  With no OPTION, same as -s.\n\
 113 \n\
 114   -a, --all                print all information, in the following order:\n\
 115   -s, --kernel-name        print the kernel name\n\
 116   -n, --nodename           print the network node hostname\n\
 117   -r, --kernel-release     print the kernel release\n\
 118 "), stdout);
 119       fputs (_("\
 120   -v, --kernel-version     print the kernel version\n\
 121   -m, --machine            print the machine hardware name\n\
 122   -p, --processor          print the processor type\n\
 123   -i, --hardware-platform  print the hardware platform\n\
 124   -o, --operating-system   print the operating system\n\
 125 "), stdout);
 126       fputs (HELP_OPTION_DESCRIPTION, stdout);
 127       fputs (VERSION_OPTION_DESCRIPTION, stdout);
 128       printf (_("\nReport bugs to <%s>.\n"), PACKAGE_BUGREPORT);
 129     }
 130   exit (status);
 131 }
 132
 133 /* Print ELEMENT, preceded by a space if something has already been
 134    printed.  */
 135
 136 static void
 137 print_element (char const *element)
 138 {
 139   static int printed;
 140   if (printed++)
 141     putchar (' ');
 142   fputs (element, stdout);
 143 }
 144
 145 int
 146 main (int argc, char **argv)
 147 {
 148   int c;
 149   static char const unknown[] = "unknown";
 150
 151   /* Mask indicating which elements to print. */
 152   unsigned toprint = 0;
 153
 154   program_name = argv[0];
 155   setlocale (LC_ALL, "");
 156   bindtextdomain (PACKAGE, LOCALEDIR);
 157   textdomain (PACKAGE);
 158
 159   atexit (close_stdout);
 160
 161   while ((c = getopt_long (argc, argv, "asnrvmpio", long_options, NULL)) != -1)
 162     {
 163       switch (c)
 164         {
 165         case 0:
 166           break;
 167
 168         case 'a':
 169           toprint = -1;
 170           break;
 171
 172         case 's':
 173           toprint |= PRINT_KERNEL_NAME;
 174           break;
 175
 176         case 'n':
 177           toprint |= PRINT_NODENAME;
 178           break;
 179
 180         case 'r':
 181           toprint |= PRINT_KERNEL_RELEASE;
 182           break;
 183
 184         case 'v':
 185           toprint |= PRINT_KERNEL_VERSION;
 186           break;
 187
 188         case 'm':
 189           toprint |= PRINT_MACHINE;
 190           break;
 191
 192         case 'p':
 193           toprint |= PRINT_PROCESSOR;
 194           break;
 195
 196         case 'i':
 197           toprint |= PRINT_HARDWARE_PLATFORM;
 198           break;
 199
 200         case 'o':
 201           toprint |= PRINT_OPERATING_SYSTEM;
 202           break;
 203
 204         case_GETOPT_HELP_CHAR;
 205
 206         case_GETOPT_VERSION_CHAR (PROGRAM_NAME, AUTHORS);
 207
 208         default:
 209           usage (1);
 210         }
 211     }
 212
 213   if (optind != argc)
 214     usage (1);
 215
 216   if (toprint == 0)
 217     toprint = PRINT_KERNEL_NAME;
 218
 219   if (toprint
 220        & (PRINT_KERNEL_NAME | PRINT_NODENAME | PRINT_KERNEL_RELEASE
 221           | PRINT_KERNEL_VERSION | PRINT_MACHINE))
 222     {
 223       struct utsname name;
 224
 225       if (uname (&name) == -1)
 226         error (1, errno, _("cannot get system name"));
 227
 228       if (toprint & PRINT_KERNEL_NAME)
 229         print_element (name.sysname);
 230       if (toprint & PRINT_NODENAME)
 231         print_element (name.nodename);
 232       if (toprint & PRINT_KERNEL_RELEASE)
 233         print_element (name.release);
 234       if (toprint & PRINT_KERNEL_VERSION)
 235         print_element (name.version);
 236       if (toprint & PRINT_MACHINE)
 237         print_element (name.machine);
 238     }
 239
 240   if (toprint & PRINT_PROCESSOR)
 241     {
 242       char const *element = unknown;
 243 #if HAVE_SYSINFO && defined SI_ARCHITECTURE
 244       {
 245         static char processor[257];
 246         if (0 <= sysinfo (SI_ARCHITECTURE, processor, sizeof processor))
 247           element = processor;
 248       }
 249 #endif
 250 #ifdef UNAME_PROCESSOR
 251       if (element == unknown)
 252         {
 253           static char processor[257];
 254           size_t s = sizeof processor;
 255           static int mib[] = { CTL_HW, UNAME_PROCESSOR };
 256           if (sysctl (mib, 2, processor, &s, 0, 0) >= 0)
 257             element = processor;
 258         }
 259 #endif
 260       print_element (element);
 261     }
 262
 263   if (toprint & PRINT_HARDWARE_PLATFORM)
 264     {
 265       char const *element = unknown;
 266 #if HAVE_SYSINFO && defined SI_PLATFORM
 267       {
 268         static char hardware_platform[257];
 269         if (0 <= sysinfo (SI_PLATFORM,
 270                           hardware_platform, sizeof hardware_platform))
 271           element = hardware_platform;
 272       }
 273 #endif
 274 #ifdef UNAME_HARDWARE_PLATFORM
 275       if (element == unknown)
 276         {
 277           static char hardware_platform[257];
 278           size_t s = sizeof hardware_platform;
 279           static int mib[] = { CTL_HW, UNAME_HARDWARE_PLATFORM };
 280           if (sysctl (mib, 2, hardware_platform, &s, 0, 0) >= 0)
 281             element = hardware_platform;
 282         }
 283 #endif
 284       print_element (element);
 285     }
 286
 287   if (toprint & PRINT_OPERATING_SYSTEM)
 288     print_element (HOST_OPERATING_SYSTEM);
 289
 290   putchar ('\n');
 291
 292   exit (0);
 293 }