[821] | 1 | /* vi: set sw=4 ts=4: */
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| 2 | /* uname -- print system information
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| 3 | Copyright (C) 1989-1999 Free Software Foundation, Inc.
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| 4 |
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| 5 | This program is free software; you can redistribute it and/or modify
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| 6 | it under the terms of the GNU General Public License as published by
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| 7 | the Free Software Foundation; either version 2, or (at your option)
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| 8 | any later version.
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| 9 |
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| 10 | This program is distributed in the hope that it will be useful,
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| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 13 | GNU General Public License for more details.
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| 14 |
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| 15 | You should have received a copy of the GNU General Public License
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| 16 | along with this program; if not, write to the Free Software Foundation,
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| 17 | Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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| 18 |
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| 19 | /* BB_AUDIT SUSv3 compliant */
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| 20 | /* http://www.opengroup.org/onlinepubs/007904975/utilities/uname.html */
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| 21 |
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| 22 | /* Option Example
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| 23 |
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| 24 | -s, --sysname SunOS
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| 25 | -n, --nodename rocky8
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| 26 | -r, --release 4.0
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| 27 | -v, --version
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| 28 | -m, --machine sun
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| 29 | -a, --all SunOS rocky8 4.0 sun
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| 30 |
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| 31 | The default behavior is equivalent to `-s'.
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| 32 |
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| 33 | David MacKenzie <djm@gnu.ai.mit.edu> */
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| 34 |
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| 35 | /* Busyboxed by Erik Andersen */
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| 36 |
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| 37 | /* Further size reductions by Glenn McGrath and Manuel Novoa III. */
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| 38 |
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| 39 | /* Mar 16, 2003 Manuel Novoa III (mjn3@codepoet.org)
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| 40 | *
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| 41 | * Now does proper error checking on i/o. Plus some further space savings.
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| 42 | */
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| 43 |
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| 44 | #include <stdio.h>
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| 45 | #include <stdlib.h>
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| 46 | #include <stddef.h>
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| 47 | #include <string.h>
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| 48 | #include <unistd.h>
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| 49 | #include <sys/types.h>
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| 50 | #include <sys/utsname.h>
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| 51 | #include "busybox.h"
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| 52 |
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| 53 | typedef struct {
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| 54 | struct utsname name;
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| 55 | char processor[8]; /* for "unknown" */
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| 56 | } uname_info_t;
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| 57 |
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| 58 | static const char options[] = "snrvmpa";
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| 59 | static const unsigned short int utsname_offset[] = {
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| 60 | offsetof(uname_info_t,name.sysname),
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| 61 | offsetof(uname_info_t,name.nodename),
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| 62 | offsetof(uname_info_t,name.release),
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| 63 | offsetof(uname_info_t,name.version),
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| 64 | offsetof(uname_info_t,name.machine),
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| 65 | offsetof(uname_info_t,processor)
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| 66 | };
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| 67 |
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| 68 | int uname_main(int argc, char **argv)
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| 69 | {
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| 70 | uname_info_t uname_info;
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| 71 | #if defined(__sparc__) && defined(__linux__)
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| 72 | char *fake_sparc = getenv("FAKE_SPARC");
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| 73 | #endif
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| 74 | const unsigned short int *delta;
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| 75 | char toprint;
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| 76 |
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| 77 | toprint = bb_getopt_ulflags(argc, argv, options);
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| 78 |
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| 79 | if (argc != optind) {
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| 80 | bb_show_usage();
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| 81 | }
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| 82 |
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| 83 | if (toprint & (1 << 6)) {
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| 84 | toprint = 0x3f;
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| 85 | }
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| 86 |
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| 87 | if (toprint == 0) {
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| 88 | toprint = 1; /* sysname */
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| 89 | }
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| 90 |
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| 91 | if (uname(&uname_info.name) == -1) {
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| 92 | bb_error_msg_and_die("cannot get system name");
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| 93 | }
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| 94 |
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| 95 | #if defined(__sparc__) && defined(__linux__)
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| 96 | if ((fake_sparc != NULL)
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| 97 | && ((fake_sparc[0] == 'y')
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| 98 | || (fake_sparc[0] == 'Y'))) {
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| 99 | strcpy(uname_info.name.machine, "sparc");
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| 100 | }
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| 101 | #endif
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| 102 |
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| 103 | strcpy(uname_info.processor, "unknown");
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| 104 |
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| 105 | delta=utsname_offset;
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| 106 | do {
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| 107 | if (toprint & 1) {
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| 108 | bb_printf(((char *)(&uname_info)) + *delta);
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| 109 | if (toprint > 1) {
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| 110 | putchar(' ');
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| 111 | }
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| 112 | }
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| 113 | ++delta;
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| 114 | } while (toprint >>= 1);
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| 115 | putchar('\n');
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| 116 |
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| 117 | bb_fflush_stdout_and_exit(EXIT_SUCCESS);
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| 118 | }
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