source: branches/3.2/mindi-busybox/coreutils/uname.c @ 3232

Last change on this file since 3232 was 3232, checked in by bruno, 5 years ago
  • Update mindi-busybox to 1.21.1
File size: 5.2 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 * Licensed under GPLv2 or later, see file LICENSE in this source tree.
6 */
7
8/* BB_AUDIT SUSv3 compliant */
9/* http://www.opengroup.org/onlinepubs/007904975/utilities/uname.html */
10
11/* Option       Example
12 * -s, --sysname    SunOS
13 * -n, --nodename   rocky8
14 * -r, --release    4.0
15 * -v, --version
16 * -m, --machine    sun
17 * -a, --all        SunOS rocky8 4.0  sun
18 *
19 * The default behavior is equivalent to '-s'.
20 *
21 * David MacKenzie <djm@gnu.ai.mit.edu>
22 *
23 * GNU coreutils 6.10:
24 * Option:                      struct   Example(s):
25 *                              utsname
26 *                              field:
27 * -s, --kernel-name            sysname  Linux
28 * -n, --nodename               nodename localhost.localdomain
29 * -r, --kernel-release         release  2.6.29
30 * -v, --kernel-version         version  #1 SMP Sun Jan 11 20:52:37 EST 2009
31 * -m, --machine                machine  x86_64   i686
32 * -p, --processor              (none)   x86_64   i686
33 * -i, --hardware-platform      (none)   x86_64   i386
34 *      NB: vanilla coreutils reports "unknown" -p and -i,
35 *      x86_64 and i686/i386 shown above are Fedora's inventions.
36 * -o, --operating-system       (none)   GNU/Linux
37 * -a, --all: all of the above, in the order shown.
38 *      If -p or -i is not known, don't show them
39 */
40
41/* Busyboxed by Erik Andersen
42 *
43 * Before 2003: Glenn McGrath and Manuel Novoa III
44 *  Further size reductions.
45 * Mar 16, 2003: Manuel Novoa III (mjn3@codepoet.org)
46 *  Now does proper error checking on i/o.  Plus some further space savings.
47 * Jan 2009:
48 *  Fix handling of -a to not print "unknown", add -o and -i support.
49 */
50
51//usage:#define uname_trivial_usage
52//usage:       "[-amnrspv]"
53//usage:#define uname_full_usage "\n\n"
54//usage:       "Print system information\n"
55//usage:     "\n    -a  Print all"
56//usage:     "\n    -m  The machine (hardware) type"
57//usage:     "\n    -n  Hostname"
58//usage:     "\n    -r  OS release"
59//usage:     "\n    -s  OS name (default)"
60//usage:     "\n    -p  Processor type"
61//usage:     "\n    -v  OS version"
62//usage:
63//usage:#define uname_example_usage
64//usage:       "$ uname -a\n"
65//usage:       "Linux debian 2.4.23 #2 Tue Dec 23 17:09:10 MST 2003 i686 GNU/Linux\n"
66
67#include "libbb.h"
68/* After libbb.h, since it needs sys/types.h on some systems */
69#include <sys/utsname.h>
70
71typedef struct {
72    struct utsname name;
73    char processor[sizeof(((struct utsname*)NULL)->machine)];
74    char platform[sizeof(((struct utsname*)NULL)->machine)];
75    char os[sizeof("GNU/Linux")];
76} uname_info_t;
77
78static const char options[] ALIGN1 = "snrvmpioa";
79static const unsigned short utsname_offset[] = {
80    offsetof(uname_info_t, name.sysname), /* -s */
81    offsetof(uname_info_t, name.nodename), /* -n */
82    offsetof(uname_info_t, name.release), /* -r */
83    offsetof(uname_info_t, name.version), /* -v */
84    offsetof(uname_info_t, name.machine), /* -m */
85    offsetof(uname_info_t, processor), /* -p */
86    offsetof(uname_info_t, platform), /* -i */
87    offsetof(uname_info_t, os), /* -o */
88};
89
90int uname_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
91int uname_main(int argc UNUSED_PARAM, char **argv)
92{
93#if ENABLE_LONG_OPTS
94    static const char uname_longopts[] ALIGN1 =
95        /* name, has_arg, val */
96        "all\0"               No_argument       "a"
97        "kernel-name\0"       No_argument       "s"
98        "nodename\0"          No_argument       "n"
99        "kernel-release\0"    No_argument       "r"
100        "release\0"           No_argument       "r"
101        "kernel-version\0"    No_argument       "v"
102        "machine\0"           No_argument       "m"
103        "processor\0"         No_argument       "p"
104        "hardware-platform\0" No_argument       "i"
105        "operating-system\0"  No_argument       "o"
106    ;
107#endif
108    uname_info_t uname_info;
109#if defined(__sparc__) && defined(__linux__)
110    char *fake_sparc = getenv("FAKE_SPARC");
111#endif
112    const char *unknown_str = "unknown";
113    const char *fmt;
114    const unsigned short *delta;
115    unsigned toprint;
116
117    IF_LONG_OPTS(applet_long_options = uname_longopts);
118    toprint = getopt32(argv, options);
119
120    if (argv[optind]) { /* coreutils-6.9 compat */
121        bb_show_usage();
122    }
123
124    if (toprint & (1 << 8)) { /* -a => all opts on */
125        toprint = (1 << 8) - 1;
126        unknown_str = ""; /* -a does not print unknown fields */
127    }
128
129    if (toprint == 0) { /* no opts => -s (sysname) */
130        toprint = 1;
131    }
132
133    uname(&uname_info.name); /* never fails */
134
135#if defined(__sparc__) && defined(__linux__)
136    if (fake_sparc && (fake_sparc[0] | 0x20) == 'y') {
137        strcpy(uname_info.name.machine, "sparc");
138    }
139#endif
140    strcpy(uname_info.processor, unknown_str);
141    strcpy(uname_info.platform, unknown_str);
142    strcpy(uname_info.os, "GNU/Linux");
143#if 0
144    /* Fedora does something like this */
145    strcpy(uname_info.processor, uname_info.name.machine);
146    strcpy(uname_info.platform, uname_info.name.machine);
147    if (uname_info.platform[0] == 'i'
148     && uname_info.platform[1]
149     && uname_info.platform[2] == '8'
150     && uname_info.platform[3] == '6'
151    ) {
152        uname_info.platform[1] = '3';
153    }
154#endif
155
156    delta = utsname_offset;
157    fmt = " %s" + 1;
158    do {
159        if (toprint & 1) {
160            const char *p = (char *)(&uname_info) + *delta;
161            if (p[0]) {
162                printf(fmt, p);
163                fmt = " %s";
164            }
165        }
166        ++delta;
167    } while (toprint >>= 1);
168    bb_putchar('\n');
169
170    fflush_stdout_and_exit(EXIT_SUCCESS); /* coreutils-6.9 compat */
171}
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