blob: 4d98fde25bd7b5bda06b4d4cd690a8f06e8ad60a
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 | /* Option Example |
8 | * -s, --sysname SunOS |
9 | * -n, --nodename rocky8 |
10 | * -r, --release 4.0 |
11 | * -v, --version |
12 | * -m, --machine sun |
13 | * -a, --all SunOS rocky8 4.0 sun |
14 | * |
15 | * The default behavior is equivalent to '-s'. |
16 | * |
17 | * David MacKenzie <djm@gnu.ai.mit.edu> |
18 | * |
19 | * GNU coreutils 6.10: |
20 | * Option: struct Example(s): |
21 | * utsname |
22 | * field: |
23 | * -s, --kernel-name sysname Linux |
24 | * -n, --nodename nodename localhost.localdomain |
25 | * -r, --kernel-release release 2.6.29 |
26 | * -v, --kernel-version version #1 SMP Sun Jan 11 20:52:37 EST 2009 |
27 | * -m, --machine machine x86_64 i686 |
28 | * -p, --processor (none) x86_64 i686 |
29 | * -i, --hardware-platform (none) x86_64 i386 |
30 | * NB: vanilla coreutils reports "unknown" -p and -i, |
31 | * x86_64 and i686/i386 shown above are Fedora's inventions. |
32 | * -o, --operating-system (none) GNU/Linux |
33 | * -a, --all: all of the above, in the order shown. |
34 | * If -p or -i is not known, don't show them |
35 | */ |
36 | /* Busyboxed by Erik Andersen |
37 | * |
38 | * Before 2003: Glenn McGrath and Manuel Novoa III |
39 | * Further size reductions. |
40 | * Mar 16, 2003: Manuel Novoa III (mjn3@codepoet.org) |
41 | * Now does proper error checking on i/o. Plus some further space savings. |
42 | * Jan 2009: |
43 | * Fix handling of -a to not print "unknown", add -o and -i support. |
44 | */ |
45 | //config:config UNAME |
46 | //config: bool "uname" |
47 | //config: default y |
48 | //config: help |
49 | //config: uname is used to print system information. |
50 | //config: |
51 | //config:config UNAME_OSNAME |
52 | //config: string "Operating system name" |
53 | //config: default "GNU/Linux" |
54 | //config: depends on UNAME |
55 | //config: help |
56 | //config: Sets the operating system name reported by uname -o. The |
57 | //config: default is "GNU/Linux". |
58 | |
59 | //applet:IF_UNAME(APPLET(uname, BB_DIR_BIN, BB_SUID_DROP)) |
60 | |
61 | //kbuild:lib-$(CONFIG_UNAME) += uname.o |
62 | |
63 | /* BB_AUDIT SUSv3 compliant */ |
64 | /* http://www.opengroup.org/onlinepubs/007904975/utilities/uname.html */ |
65 | |
66 | //usage:#define uname_trivial_usage |
67 | //usage: "[-amnrspvio]" |
68 | //usage:#define uname_full_usage "\n\n" |
69 | //usage: "Print system information\n" |
70 | //usage: "\n -a Print all" |
71 | //usage: "\n -m The machine (hardware) type" |
72 | //usage: "\n -n Hostname" |
73 | //usage: "\n -r Kernel release" |
74 | //usage: "\n -s Kernel name (default)" |
75 | //usage: "\n -p Processor type" |
76 | //usage: "\n -v Kernel version" |
77 | //usage: "\n -i The hardware platform" |
78 | //usage: "\n -o OS name" |
79 | //usage: |
80 | //usage:#define uname_example_usage |
81 | //usage: "$ uname -a\n" |
82 | //usage: "Linux debian 2.4.23 #2 Tue Dec 23 17:09:10 MST 2003 i686 GNU/Linux\n" |
83 | |
84 | #include "libbb.h" |
85 | /* After libbb.h, since it needs sys/types.h on some systems */ |
86 | #include <sys/utsname.h> |
87 | |
88 | typedef struct { |
89 | struct utsname name; |
90 | char processor[sizeof(((struct utsname*)NULL)->machine)]; |
91 | char platform[sizeof(((struct utsname*)NULL)->machine)]; |
92 | char os[sizeof(CONFIG_UNAME_OSNAME)]; |
93 | } uname_info_t; |
94 | |
95 | static const char options[] ALIGN1 = "snrvmpioa"; |
96 | static const unsigned short utsname_offset[] = { |
97 | offsetof(uname_info_t, name.sysname), /* -s */ |
98 | offsetof(uname_info_t, name.nodename), /* -n */ |
99 | offsetof(uname_info_t, name.release), /* -r */ |
100 | offsetof(uname_info_t, name.version), /* -v */ |
101 | offsetof(uname_info_t, name.machine), /* -m */ |
102 | offsetof(uname_info_t, processor), /* -p */ |
103 | offsetof(uname_info_t, platform), /* -i */ |
104 | offsetof(uname_info_t, os), /* -o */ |
105 | }; |
106 | |
107 | int uname_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
108 | int uname_main(int argc UNUSED_PARAM, char **argv) |
109 | { |
110 | #if ENABLE_LONG_OPTS |
111 | static const char uname_longopts[] ALIGN1 = |
112 | /* name, has_arg, val */ |
113 | "all\0" No_argument "a" |
114 | "kernel-name\0" No_argument "s" |
115 | "nodename\0" No_argument "n" |
116 | "kernel-release\0" No_argument "r" |
117 | "release\0" No_argument "r" |
118 | "kernel-version\0" No_argument "v" |
119 | "machine\0" No_argument "m" |
120 | "processor\0" No_argument "p" |
121 | "hardware-platform\0" No_argument "i" |
122 | "operating-system\0" No_argument "o" |
123 | ; |
124 | #endif |
125 | uname_info_t uname_info; |
126 | #if defined(__sparc__) && defined(__linux__) |
127 | char *fake_sparc = getenv("FAKE_SPARC"); |
128 | #endif |
129 | const char *unknown_str = "unknown"; |
130 | const char *fmt; |
131 | const unsigned short *delta; |
132 | unsigned toprint; |
133 | |
134 | IF_LONG_OPTS(applet_long_options = uname_longopts); |
135 | toprint = getopt32(argv, options); |
136 | |
137 | if (argv[optind]) { /* coreutils-6.9 compat */ |
138 | bb_show_usage(); |
139 | } |
140 | |
141 | if (toprint & (1 << 8)) { /* -a => all opts on */ |
142 | toprint = (1 << 8) - 1; |
143 | unknown_str = ""; /* -a does not print unknown fields */ |
144 | } |
145 | |
146 | if (toprint == 0) { /* no opts => -s (sysname) */ |
147 | toprint = 1; |
148 | } |
149 | |
150 | uname(&uname_info.name); /* never fails */ |
151 | |
152 | #if defined(__sparc__) && defined(__linux__) |
153 | if (fake_sparc && (fake_sparc[0] | 0x20) == 'y') { |
154 | strcpy(uname_info.name.machine, "sparc"); |
155 | } |
156 | #endif |
157 | strcpy(uname_info.processor, unknown_str); |
158 | strcpy(uname_info.platform, unknown_str); |
159 | strcpy(uname_info.os, CONFIG_UNAME_OSNAME); |
160 | #if 0 |
161 | /* Fedora does something like this */ |
162 | strcpy(uname_info.processor, uname_info.name.machine); |
163 | strcpy(uname_info.platform, uname_info.name.machine); |
164 | if (uname_info.platform[0] == 'i' |
165 | && uname_info.platform[1] |
166 | && uname_info.platform[2] == '8' |
167 | && uname_info.platform[3] == '6' |
168 | ) { |
169 | uname_info.platform[1] = '3'; |
170 | } |
171 | #endif |
172 | |
173 | delta = utsname_offset; |
174 | fmt = " %s" + 1; |
175 | do { |
176 | if (toprint & 1) { |
177 | const char *p = (char *)(&uname_info) + *delta; |
178 | if (p[0]) { |
179 | printf(fmt, p); |
180 | fmt = " %s"; |
181 | } |
182 | } |
183 | ++delta; |
184 | } while (toprint >>= 1); |
185 | bb_putchar('\n'); |
186 | |
187 | fflush_stdout_and_exit(EXIT_SUCCESS); /* coreutils-6.9 compat */ |
188 | } |
189 |