summaryrefslogtreecommitdiff
path: root/src/uname.c
blob: f85d7e9124afaa033723e353c6f53f65a35686c6 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
/* uname -- print system information

   Copyright (C) 1989, 1992-1993, 1996-1997, 1999-2005, 2007-2010 Free Software
   Foundation, Inc.

   This program is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation, either version 3 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */

/* Written by David MacKenzie <djm@gnu.ai.mit.edu> */

#include <config.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/utsname.h>
#include <getopt.h>

#if HAVE_SYSINFO && HAVE_SYS_SYSTEMINFO_H
# include <sys/systeminfo.h>
#endif

#if HAVE_SYS_SYSCTL_H
# if HAVE_SYS_PARAM_H
#  include <sys/param.h> /* needed for OpenBSD 3.0 */
# endif
# include <sys/sysctl.h>
# ifdef HW_MODEL
#  ifdef HW_MACHINE_ARCH
/* E.g., FreeBSD 4.5, NetBSD 1.5.2 */
#   define UNAME_HARDWARE_PLATFORM HW_MODEL
#   define UNAME_PROCESSOR HW_MACHINE_ARCH
#  else
/* E.g., OpenBSD 3.0 */
#   define UNAME_PROCESSOR HW_MODEL
#  endif
# endif
#endif

#ifdef __APPLE__
# include <mach/machine.h>
# include <mach-o/arch.h>
#endif

#include "system.h"
#include "error.h"
#include "quote.h"
#include "uname.h"

/* The official name of this program (e.g., no `g' prefix).  */
#define PROGRAM_NAME (uname_mode == UNAME_UNAME ? "uname" : "arch")

#define AUTHORS proper_name ("David MacKenzie")
#define ARCH_AUTHORS "David MacKenzie", "Karel Zak"

/* Values that are bitwise or'd into `toprint'. */
/* Kernel name. */
#define PRINT_KERNEL_NAME 1

/* Node name on a communications network. */
#define PRINT_NODENAME 2

/* Kernel release. */
#define PRINT_KERNEL_RELEASE 4

/* Kernel version. */
#define PRINT_KERNEL_VERSION 8

/* Machine hardware name. */
#define PRINT_MACHINE 16

/* Processor type. */
#define PRINT_PROCESSOR 32

/* Hardware platform.  */
#define PRINT_HARDWARE_PLATFORM 64

/* Operating system.  */
#define PRINT_OPERATING_SYSTEM 128

static struct option const uname_long_options[] =
{
  {"all", no_argument, NULL, 'a'},
  {"kernel-name", no_argument, NULL, 's'},
  {"sysname", no_argument, NULL, 's'},	/* Obsolescent.  */
  {"nodename", no_argument, NULL, 'n'},
  {"kernel-release", no_argument, NULL, 'r'},
  {"release", no_argument, NULL, 'r'},  /* Obsolescent.  */
  {"kernel-version", no_argument, NULL, 'v'},
  {"machine", no_argument, NULL, 'm'},
  {"processor", no_argument, NULL, 'p'},
  {"hardware-platform", no_argument, NULL, 'i'},
  {"operating-system", no_argument, NULL, 'o'},
  {GETOPT_HELP_OPTION_DECL},
  {GETOPT_VERSION_OPTION_DECL},
  {NULL, 0, NULL, 0}
};

static struct option const arch_long_options[] =
{
  {GETOPT_HELP_OPTION_DECL},
  {GETOPT_VERSION_OPTION_DECL},
  {NULL, 0, NULL, 0}
};

void
usage (int status)
{
  if (status != EXIT_SUCCESS)
    fprintf (stderr, _("Try `%s --help' for more information.\n"),
             program_name);
  else
    {
      printf (_("Usage: %s [OPTION]...\n"), program_name);

      if (uname_mode == UNAME_UNAME)
        {
          fputs (_("\
Print certain system information.  With no OPTION, same as -s.\n\
\n\
  -a, --all                print all information, in the following order,\n\
                             except omit -p and -i if unknown:\n\
  -s, --kernel-name        print the kernel name\n\
  -n, --nodename           print the network node hostname\n\
  -r, --kernel-release     print the kernel release\n\
"), stdout);
          fputs (_("\
  -v, --kernel-version     print the kernel version\n\
  -m, --machine            print the machine hardware name\n\
  -p, --processor          print the processor type or \"unknown\"\n\
  -i, --hardware-platform  print the hardware platform or \"unknown\"\n\
  -o, --operating-system   print the operating system\n\
"), stdout);
        }
      else
        {
          fputs (_("\
Print machine architecture.\n\
\n\
"), stdout);
        }

      fputs (HELP_OPTION_DESCRIPTION, stdout);
      fputs (VERSION_OPTION_DESCRIPTION, stdout);
      emit_ancillary_info ();
    }
  exit (status);
}

/* Print ELEMENT, preceded by a space if something has already been
   printed.  */

static void
print_element (char const *element)
{
  static bool printed;
  if (printed)
    putchar (' ');
  printed = true;
  fputs (element, stdout);
}


/* Set all the option flags according to the switches specified.
   Return the mask indicating which elements to print.  */

static int
decode_switches (int argc, char **argv)
{
  int c;
  unsigned int toprint = 0;

  if (uname_mode == UNAME_ARCH)
    {
      while ((c = getopt_long (argc, argv, "",
                               arch_long_options, NULL)) != -1)
        {
          switch (c)
            {
            case_GETOPT_HELP_CHAR;

            case_GETOPT_VERSION_CHAR (PROGRAM_NAME, ARCH_AUTHORS);

            default:
              usage (EXIT_FAILURE);
            }
        }
      toprint = PRINT_MACHINE;
    }
  else
    {
      while ((c = getopt_long (argc, argv, "asnrvmpio",
                               uname_long_options, NULL)) != -1)
        {
          switch (c)
            {
            case 'a':
              toprint = UINT_MAX;
              break;

            case 's':
              toprint |= PRINT_KERNEL_NAME;
              break;

            case 'n':
              toprint |= PRINT_NODENAME;
              break;

            case 'r':
              toprint |= PRINT_KERNEL_RELEASE;
              break;

            case 'v':
              toprint |= PRINT_KERNEL_VERSION;
              break;

            case 'm':
              toprint |= PRINT_MACHINE;
              break;

            case 'p':
              toprint |= PRINT_PROCESSOR;
              break;

            case 'i':
              toprint |= PRINT_HARDWARE_PLATFORM;
              break;

            case 'o':
              toprint |= PRINT_OPERATING_SYSTEM;
              break;

            case_GETOPT_HELP_CHAR;

            case_GETOPT_VERSION_CHAR (PROGRAM_NAME, AUTHORS);

            default:
              usage (EXIT_FAILURE);
            }
        }
    }

  if (argc != optind)
    {
      error (0, 0, _("extra operand %s"), quote (argv[optind]));
      usage (EXIT_FAILURE);
    }

  return toprint;
}

int
main (int argc, char **argv)
{
  static char const unknown[] = "unknown";

  /* Mask indicating which elements to print. */
  unsigned int toprint = 0;

  initialize_main (&argc, &argv);
  set_program_name (argv[0]);
  setlocale (LC_ALL, "");
  bindtextdomain (PACKAGE, LOCALEDIR);
  textdomain (PACKAGE);

  atexit (close_stdout);

  toprint = decode_switches (argc, argv);

  if (toprint == 0)
    toprint = PRINT_KERNEL_NAME;

  if (toprint
       & (PRINT_KERNEL_NAME | PRINT_NODENAME | PRINT_KERNEL_RELEASE
          | PRINT_KERNEL_VERSION | PRINT_MACHINE))
    {
      struct utsname name;

      if (uname (&name) == -1)
        error (EXIT_FAILURE, errno, _("cannot get system name"));

      if (toprint & PRINT_KERNEL_NAME)
        print_element (name.sysname);
      if (toprint & PRINT_NODENAME)
        print_element (name.nodename);
      if (toprint & PRINT_KERNEL_RELEASE)
        print_element (name.release);
      if (toprint & PRINT_KERNEL_VERSION)
        print_element (name.version);
      if (toprint & PRINT_MACHINE)
        print_element (name.machine);
    }

  if (toprint & PRINT_PROCESSOR)
    {
      char const *element = unknown;
#if HAVE_SYSINFO && defined SI_ARCHITECTURE
      {
        static char processor[257];
        if (0 <= sysinfo (SI_ARCHITECTURE, processor, sizeof processor))
          element = processor;
      }
#endif
#ifdef UNAME_PROCESSOR
      if (element == unknown)
        {
          static char processor[257];
          size_t s = sizeof processor;
          static int mib[] = { CTL_HW, UNAME_PROCESSOR };
          if (sysctl (mib, 2, processor, &s, 0, 0) >= 0)
            element = processor;

# ifdef __APPLE__
          /* This kludge works around a bug in Mac OS X.  */
          if (element == unknown)
            {
              cpu_type_t cputype;
              size_t s = sizeof cputype;
              NXArchInfo const *ai;
              if (sysctlbyname ("hw.cputype", &cputype, &s, NULL, 0) == 0
                  && (ai = NXGetArchInfoFromCpuType (cputype,
                                                     CPU_SUBTYPE_MULTIPLE))
                  != NULL)
                element = ai->name;

              /* Hack "safely" around the ppc vs. powerpc return value. */
              if (cputype == CPU_TYPE_POWERPC
                  && strncmp (element, "ppc", 3) == 0)
                element = "powerpc";
            }
# endif
        }
#endif
      if (! (toprint == UINT_MAX && element == unknown))
        print_element (element);
    }

  if (toprint & PRINT_HARDWARE_PLATFORM)
    {
      char const *element = unknown;
#if HAVE_SYSINFO && defined SI_PLATFORM
      {
        static char hardware_platform[257];
        if (0 <= sysinfo (SI_PLATFORM,
                          hardware_platform, sizeof hardware_platform))
          element = hardware_platform;
      }
#endif
#ifdef UNAME_HARDWARE_PLATFORM
      if (element == unknown)
        {
          static char hardware_platform[257];
          size_t s = sizeof hardware_platform;
          static int mib[] = { CTL_HW, UNAME_HARDWARE_PLATFORM };
          if (sysctl (mib, 2, hardware_platform, &s, 0, 0) >= 0)
            element = hardware_platform;
        }
#endif
      if (! (toprint == UINT_MAX && element == unknown))
        print_element (element);
    }

  if (toprint & PRINT_OPERATING_SYSTEM)
    print_element (HOST_OPERATING_SYSTEM);

  putchar ('\n');

  exit (EXIT_SUCCESS);
}