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2fae9e5d26
instead of hard-coding --help and --version descriptions. Split --help output into smaller pieces. Use fputs, not printf.
128 lines
3.1 KiB
C
128 lines
3.1 KiB
C
/* hostname - set or print the name of current host system
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Copyright (C) 1994-1997, 1999, 2000, 2001 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software Foundation,
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Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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/* Jim Meyering <meyering@comco.com> */
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#include <config.h>
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#include <stdio.h>
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#include <sys/types.h>
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#include "system.h"
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#include "closeout.h"
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#include "long-options.h"
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#include "error.h"
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/* The official name of this program (e.g., no `g' prefix). */
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#define PROGRAM_NAME "hostname"
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#define AUTHORS "Jim Meyering"
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#if !defined(HAVE_SETHOSTNAME) && defined(HAVE_SYSINFO) && \
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defined (HAVE_SYS_SYSTEMINFO_H) && defined(HAVE_LIMITS_H)
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# include <sys/systeminfo.h>
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int
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sethostname (name, namelen)
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char *name;
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int namelen;
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{
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/* Using sysinfo() is the SVR4 mechanism to set a hostname. */
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int result;
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result = sysinfo (SI_SET_HOSTNAME, name, namelen);
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return (result == -1 ? result : 0);
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}
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# define HAVE_SETHOSTNAME 1 /* Now we have it... */
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#endif
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char *xgethostname ();
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/* The name this program was run with. */
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char *program_name;
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void
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usage (int status)
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{
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if (status != 0)
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fprintf (stderr, _("Try `%s --help' for more information.\n"),
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program_name);
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else
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{
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printf (_("\
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Usage: %s [NAME]\n\
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or: %s OPTION\n\
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Print or set the hostname of the current system.\n\
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\n\
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"),
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program_name, program_name);
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fputs (HELP_OPTION_DESCRIPTION, stdout);
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fputs (VERSION_OPTION_DESCRIPTION, stdout);
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puts (_("\nReport bugs to <bug-sh-utils@gnu.org>."));
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}
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exit (status);
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}
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int
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main (int argc, char **argv)
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{
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char *hostname;
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program_name = argv[0];
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setlocale (LC_ALL, "");
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bindtextdomain (PACKAGE, LOCALEDIR);
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textdomain (PACKAGE);
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atexit (close_stdout);
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parse_long_options (argc, argv, PROGRAM_NAME, GNU_PACKAGE, VERSION,
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AUTHORS, usage);
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#ifdef HAVE_SETHOSTNAME
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if (argc == 2)
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{
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int err;
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/* Set hostname to argv[1]. */
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err = sethostname (argv[1], strlen (argv[1]));
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if (err != 0)
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error (1, errno, _("cannot set hostname to `%s'"), argv[1]);
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exit (0);
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}
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#else
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if (argc == 2)
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error (1, 0,
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_("cannot set hostname; this system lacks the functionality"));
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#endif
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if (argc == 1)
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{
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hostname = xgethostname ();
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if (hostname == NULL)
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error (1, errno, _("cannot determine hostname"));
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printf ("%s\n", hostname);
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}
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else
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{
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error (2, 0, _("too many arguments"));
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usage (1);
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}
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exit (0);
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}
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