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- /* uname -- print system information
- Copyright (C) 89, 90, 91, 92, 93, 1994 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 2, 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, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
-
- /* Option Example
-
- -s, --sysname SunOS
- -n, --nodename rocky8
- -r, --release 4.0
- -v, --version
- -m, --machine sun
- -a, --all SunOS rocky8 4.0 sun
-
- The default behavior is equivalent to `-s'.
-
- David MacKenzie <djm@gnu.ai.mit.edu> */
-
- #include <config.h>
- #include <stdio.h>
- #include <sys/types.h>
- #include <sys/utsname.h>
- #include <getopt.h>
-
- #include "system.h"
- #include "version.h"
-
- void error ();
-
- static void print_element ();
- static void usage ();
-
- /* Values that are bitwise or'd into `toprint'. */
- /* Operating system name. */
- #define PRINT_SYSNAME 1
-
- /* Node name on a communications network. */
- #define PRINT_NODENAME 2
-
- /* Operating system release. */
- #define PRINT_RELEASE 4
-
- /* Operating system version. */
- #define PRINT_VERSION 8
-
- /* Machine hardware name. */
- #define PRINT_MACHINE 16
-
- /* Mask indicating which elements of the name to print. */
- static unsigned char toprint;
-
- /* The name this program was run with, for error messages. */
- char *program_name;
-
- /* If non-zero, display usage information and exit. */
- static int show_help;
-
- /* If non-zero, print the version on standard output and exit. */
- static int show_version;
-
- static struct option const long_options[] =
- {
- {"help", no_argument, &show_help, 1},
- {"machine", no_argument, NULL, 'm'},
- {"nodename", no_argument, NULL, 'n'},
- {"release", no_argument, NULL, 'r'},
- {"sysname", no_argument, NULL, 's'},
- {"version", no_argument, &show_version, 1},
- {"all", no_argument, NULL, 'a'},
- {NULL, 0, NULL, 0}
- };
-
- void
- main (argc, argv)
- int argc;
- char **argv;
- {
- struct utsname name;
- int c;
-
- program_name = argv[0];
- toprint = 0;
-
- while ((c = getopt_long (argc, argv, "snrvma", long_options, (int *) 0))
- != EOF)
- {
- switch (c)
- {
- case 0:
- break;
-
- case 's':
- toprint |= PRINT_SYSNAME;
- break;
-
- case 'n':
- toprint |= PRINT_NODENAME;
- break;
-
- case 'r':
- toprint |= PRINT_RELEASE;
- break;
-
- case 'v':
- toprint |= PRINT_VERSION;
- break;
-
- case 'm':
- toprint |= PRINT_MACHINE;
- break;
-
- case 'a':
- toprint = PRINT_SYSNAME | PRINT_NODENAME | PRINT_RELEASE |
- PRINT_VERSION | PRINT_MACHINE;
- break;
-
- default:
- usage (1);
- }
- }
-
- if (show_version)
- {
- printf ("uname - %s\n", version_string);
- exit (0);
- }
-
- if (show_help)
- usage (0);
-
- if (optind != argc)
- usage (1);
-
- if (toprint == 0)
- toprint = PRINT_SYSNAME;
-
- if (uname (&name) == -1)
- error (1, errno, "cannot get system name");
-
- print_element (PRINT_SYSNAME, name.sysname);
- print_element (PRINT_NODENAME, name.nodename);
- print_element (PRINT_RELEASE, name.release);
- print_element (PRINT_VERSION, name.version);
- print_element (PRINT_MACHINE, name.machine);
-
- exit (0);
- }
-
- /* If the name element set in MASK is selected for printing in `toprint',
- print ELEMENT; then print a space unless it is the last element to
- be printed, in which case print a newline. */
-
- static void
- print_element (mask, element)
- unsigned char mask;
- char *element;
- {
- if (toprint & mask)
- {
- toprint &= ~mask;
- printf ("%s%c", element, toprint ? ' ' : '\n');
- }
- }
-
- static void
- usage (status)
- int status;
- {
- if (status != 0)
- fprintf (stderr, "Try `%s --help' for more information.\n",
- program_name);
- else
- {
- printf ("Usage: %s [OPTION]...\n", program_name);
- printf ("\
- \n\
- -a, --all print all information\n\
- -m, --machine print the machine (hardware) type\n\
- -n, --nodename print the machine's network node hostname\n\
- -r, --release print the operating system release\n\
- -s, --sysname print the operating system name\n\
- -v print the operating system version\n\
- --help display this help and exit\n\
- --version output version information and exit\n\
- \n\
- Without any OPTION, assume -s.\n\
- ");
- }
- exit (status);
- }
-