source: branches/2.2.2/mindi-busybox/coreutils/uname.c @ 1247

Last change on this file since 1247 was 821, checked in by Bruno Cornec, 14 years ago

Addition of busybox 1.2.1 as a mindi-busybox new package
This should avoid delivering binary files in mindi not built there (Fedora and Debian are quite serious about that)

File size: 2.9 KB
Line 
1/* vi: set sw=4 ts=4: */
2/* uname -- print system information
3   Copyright (C) 1989-1999 Free Software Foundation, Inc.
4
5   This program is free software; you can redistribute it and/or modify
6   it under the terms of the GNU General Public License as published by
7   the Free Software Foundation; either version 2, or (at your option)
8   any later version.
9
10   This program is distributed in the hope that it will be useful,
11   but WITHOUT ANY WARRANTY; without even the implied warranty of
12   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13   GNU General Public License for more details.
14
15   You should have received a copy of the GNU General Public License
16   along with this program; if not, write to the Free Software Foundation,
17   Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
18
19/* BB_AUDIT SUSv3 compliant */
20/* http://www.opengroup.org/onlinepubs/007904975/utilities/uname.html */
21
22/* Option       Example
23
24   -s, --sysname    SunOS
25   -n, --nodename   rocky8
26   -r, --release    4.0
27   -v, --version
28   -m, --machine    sun
29   -a, --all        SunOS rocky8 4.0  sun
30
31   The default behavior is equivalent to `-s'.
32
33   David MacKenzie <djm@gnu.ai.mit.edu> */
34
35/* Busyboxed by Erik Andersen */
36
37/* Further size reductions by Glenn McGrath and Manuel Novoa III. */
38
39/* Mar 16, 2003      Manuel Novoa III   (mjn3@codepoet.org)
40 *
41 * Now does proper error checking on i/o.  Plus some further space savings.
42 */
43
44#include <stdio.h>
45#include <stdlib.h>
46#include <stddef.h>
47#include <string.h>
48#include <unistd.h>
49#include <sys/types.h>
50#include <sys/utsname.h>
51#include "busybox.h"
52
53typedef struct {
54    struct utsname name;
55    char processor[8];          /* for "unknown" */
56} uname_info_t;
57
58static const char options[] = "snrvmpa";
59static const unsigned short int utsname_offset[] = {
60    offsetof(uname_info_t,name.sysname),
61    offsetof(uname_info_t,name.nodename),
62    offsetof(uname_info_t,name.release),
63    offsetof(uname_info_t,name.version),
64    offsetof(uname_info_t,name.machine),
65    offsetof(uname_info_t,processor)
66};
67
68int uname_main(int argc, char **argv)
69{
70    uname_info_t uname_info;
71#if defined(__sparc__) && defined(__linux__)
72    char *fake_sparc = getenv("FAKE_SPARC");
73#endif
74    const unsigned short int *delta;
75    char toprint;
76
77    toprint = bb_getopt_ulflags(argc, argv, options);
78
79    if (argc != optind) {
80        bb_show_usage();
81    }
82
83    if (toprint & (1 << 6)) {
84        toprint = 0x3f;
85    }
86
87    if (toprint == 0) {
88        toprint = 1;            /* sysname */
89    }
90
91    if (uname(&uname_info.name) == -1) {
92        bb_error_msg_and_die("cannot get system name");
93    }
94
95#if defined(__sparc__) && defined(__linux__)
96    if ((fake_sparc != NULL)
97        && ((fake_sparc[0] == 'y')
98            || (fake_sparc[0] == 'Y'))) {
99        strcpy(uname_info.name.machine, "sparc");
100    }
101#endif
102
103    strcpy(uname_info.processor, "unknown");
104
105    delta=utsname_offset;
106    do {
107        if (toprint & 1) {
108            bb_printf(((char *)(&uname_info)) + *delta);
109            if (toprint > 1) {
110                putchar(' ');
111            }
112        }
113        ++delta;
114    } while (toprint >>= 1);
115    putchar('\n');
116
117    bb_fflush_stdout_and_exit(EXIT_SUCCESS);
118}
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