blob: b96d76b6c312f3d9bca8446ca374713caf8d1fef
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 | |
71 | typedef 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 | |
78 | static const char options[] ALIGN1 = "snrvmpioa"; |
79 | static 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 | |
90 | int uname_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
91 | int 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 | } |
172 |