162 lines
3.2 KiB
C
162 lines
3.2 KiB
C
/*
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* uname - print system information
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*
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* usage: uname [-amnrsv]
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*
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*/
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/*
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Copyright (C) 1999-2009 Free Software Foundation, Inc.
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This file is part of GNU Bash.
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Bash 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 3 of the License, or
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(at your option) any later version.
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Bash 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 Bash. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <config.h>
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#include <stdio.h>
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#include "bashtypes.h"
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#if defined (HAVE_UNAME)
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# include <sys/utsname.h>
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#else
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struct utsname {
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char sysname[32];
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char nodename[32];
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char release[32];
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char version[32];
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char machine[32];
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};
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#endif
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#include <errno.h>
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#include "builtins.h"
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#include "shell.h"
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#include "bashgetopt.h"
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#include "common.h"
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#define FLAG_SYSNAME 0x01 /* -s */
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#define FLAG_NODENAME 0x02 /* -n */
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#define FLAG_RELEASE 0x04 /* -r */
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#define FLAG_VERSION 0x08 /* -v */
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#define FLAG_MACHINE 0x10 /* -m, -p */
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#define FLAG_ALL 0x1f
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#ifndef errno
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extern int errno;
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#endif
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static void uprint();
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static int uname_flags;
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int
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uname_builtin (list)
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WORD_LIST *list;
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{
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int opt, r;
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struct utsname uninfo;
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uname_flags = 0;
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reset_internal_getopt ();
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while ((opt = internal_getopt (list, "amnprsv")) != -1)
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{
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switch (opt)
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{
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case 'a':
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uname_flags |= FLAG_ALL;
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break;
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case 'm':
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case 'p':
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uname_flags |= FLAG_MACHINE;
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break;
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case 'n':
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uname_flags |= FLAG_NODENAME;
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break;
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case 'r':
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uname_flags |= FLAG_RELEASE;
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break;
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case 's':
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uname_flags |= FLAG_SYSNAME;
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break;
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case 'v':
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uname_flags |= FLAG_VERSION;
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break;
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CASE_HELPOPT;
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default:
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builtin_usage ();
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return (EX_USAGE);
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}
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}
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list = loptend;
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if (list)
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{
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builtin_usage ();
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return (EX_USAGE);
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}
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if (uname_flags == 0)
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uname_flags = FLAG_SYSNAME;
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/* Only ancient systems will not have uname(2). */
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#ifdef HAVE_UNAME
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if (uname (&uninfo) < 0)
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{
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builtin_error ("cannot get system name: %s", strerror (errno));
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return (EXECUTION_FAILURE);
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}
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#else
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builtin_error ("cannot get system information: uname(2) not available");
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return (EXECUTION_FAILURE);
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#endif
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uprint (FLAG_SYSNAME, uninfo.sysname);
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uprint (FLAG_NODENAME, uninfo.nodename);
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uprint (FLAG_RELEASE, uninfo.release);
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uprint (FLAG_VERSION, uninfo.version);
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uprint (FLAG_MACHINE, uninfo.machine);
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return (EXECUTION_SUCCESS);
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}
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static void
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uprint (flag, info)
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int flag;
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char *info;
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{
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if (uname_flags & flag)
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{
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uname_flags &= ~flag;
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printf ("%s%c", info, uname_flags ? ' ' : '\n');
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}
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}
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char *uname_doc[] = {
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"Display system information.",
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"",
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"Display information about the system hardware and OS.",
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(char *)NULL
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};
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struct builtin uname_struct = {
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"uname",
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uname_builtin,
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BUILTIN_ENABLED,
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uname_doc,
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"uname [-amnrsv]",
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0
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};
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