109 lines
2.7 KiB
C
109 lines
2.7 KiB
C
/* vi: set sw=4 ts=4: */
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/* uname -- print system information
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Copyright (C) 1989-1999 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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/* Option Example
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-s, --sysname SunOS
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-n, --nodename rocky8
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-r, --release 4.0
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-v, --version
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-m, --machine sun
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-a, --all SunOS rocky8 4.0 sun
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The default behavior is equivalent to `-s'.
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David MacKenzie <djm@gnu.ai.mit.edu> */
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/* Busyboxed by Erik Andersen */
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/* Further size reductions by Glenn McGrath and Manuel Novoa III. */
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#include <stdio.h>
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#include <stdlib.h>
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#include <stddef.h>
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#include <string.h>
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#include <sys/types.h>
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#include <sys/utsname.h>
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#include <getopt.h>
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#include "busybox.h"
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typedef struct {
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struct utsname name;
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char processor[8]; /* for "unknown" */
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} uname_info_t;
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static const char options[] = "snrvmpa";
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static const char flags[] = "\x01\x02\x04\x08\x10\x20\x3f";
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static const unsigned short int utsname_offset[] = {
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offsetof(uname_info_t,name.sysname),
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offsetof(uname_info_t,name.nodename),
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offsetof(uname_info_t,name.release),
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offsetof(uname_info_t,name.version),
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offsetof(uname_info_t,name.machine),
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offsetof(uname_info_t,processor)
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};
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int uname_main(int argc, char **argv)
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{
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uname_info_t uname_info;
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#if defined(__sparc__) && defined(__linux__)
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char *fake_sparc = getenv("FAKE_SPARC");
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#endif
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const unsigned short int *delta;
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int opt;
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char toprint = 0;
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while ((opt = getopt(argc, argv, options)) != -1) {
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const char *p = strchr(options,opt);
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if (p == NULL) {
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show_usage();
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}
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toprint |= flags[(int)(p-options)];
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}
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if (toprint == 0) {
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toprint = flags[0]; /* sysname */
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}
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if (uname(&uname_info.name) == -1) {
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error_msg_and_die("cannot get system name");
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}
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#if defined(__sparc__) && defined(__linux__)
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if ((fake_sparc != NULL)
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&& ((fake_sparc[0] == 'y')
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|| (fake_sparc[0] == 'Y'))) {
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strcpy(uname_info.name.machine, "sparc");
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}
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#endif
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strcpy(uname_info.processor, "unknown");
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for (delta=utsname_offset ; toprint ; delta++, toprint >>= 1) {
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if (toprint & 1) {
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printf("%s ", ((char *)(&uname_info)) + *delta );
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}
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}
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putchar('\n');
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return EXIT_SUCCESS;
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}
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