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