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7aca89a7a3
function old new delta static.uname_longopts - 137 +137 touch_main 231 360 +129 static.touch_longopts - 32 +32 validate_tm_time - 28 +28 packed_usage 26616 26624 +8 date_main 687 686 -1 static.longopts 162 - -162 ------------------------------------------------------------------------------ (add/remove: 3/1 grow/shrink: 2/1 up/down: 334/-163) Total: 171 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
155 lines
4.6 KiB
C
155 lines
4.6 KiB
C
/* vi: set sw=4 ts=4: */
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/* uname -- print system information
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* Copyright (C) 1989-1999 Free Software Foundation, Inc.
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*
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* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
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*/
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/* BB_AUDIT SUSv3 compliant */
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/* http://www.opengroup.org/onlinepubs/007904975/utilities/uname.html */
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/* Option Example
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* -s, --sysname SunOS
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* -n, --nodename rocky8
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* -r, --release 4.0
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* -v, --version
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* -m, --machine sun
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* -a, --all SunOS rocky8 4.0 sun
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*
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* The default behavior is equivalent to '-s'.
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*
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* David MacKenzie <djm@gnu.ai.mit.edu>
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*
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* GNU coreutils 6.10:
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* Option: struct Example(s):
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* utsname
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* field:
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* -s, --kernel-name sysname Linux
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* -n, --nodename nodename localhost.localdomain
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* -r, --kernel-release release 2.6.29
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* -v, --kernel-version version #1 SMP Sun Jan 11 20:52:37 EST 2009
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* -m, --machine machine x86_64 i686
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* -p, --processor (none) x86_64 i686
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* -i, --hardware-platform (none) x86_64 i386
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* NB: vanilla coreutils reports "unknown" -p and -i,
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* x86_64 and i686/i386 shown above are Fedora's inventions.
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* -o, --operating-system (none) GNU/Linux
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* -a, --all: all of the above, in the order shown.
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* If -p or -i is not known, don't show them
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*/
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/* Busyboxed by Erik Andersen
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*
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* Before 2003: Glenn McGrath and Manuel Novoa III
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* Further size reductions.
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* Mar 16, 2003: Manuel Novoa III (mjn3@codepoet.org)
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* Now does proper error checking on i/o. Plus some further space savings.
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* Jan 2009:
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* Fix handling of -a to not print "unknown", add -o and -i support.
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*/
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#include <sys/utsname.h>
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#include "libbb.h"
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typedef struct {
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struct utsname name;
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char processor[sizeof(((struct utsname*)NULL)->machine)];
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char platform[sizeof(((struct utsname*)NULL)->machine)];
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char os[sizeof("GNU/Linux")];
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} uname_info_t;
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static const char options[] ALIGN1 = "snrvmpioa";
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static const unsigned short utsname_offset[] = {
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offsetof(uname_info_t, name.sysname), /* -s */
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offsetof(uname_info_t, name.nodename), /* -n */
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offsetof(uname_info_t, name.release), /* -r */
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offsetof(uname_info_t, name.version), /* -v */
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offsetof(uname_info_t, name.machine), /* -m */
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offsetof(uname_info_t, processor), /* -p */
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offsetof(uname_info_t, platform), /* -i */
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offsetof(uname_info_t, os), /* -o */
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};
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int uname_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
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int uname_main(int argc UNUSED_PARAM, char **argv)
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{
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#if ENABLE_LONG_OPTS
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static const char uname_longopts[] ALIGN1 =
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/* name, has_arg, val */
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"all\0" No_argument "a"
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"kernel-name\0" No_argument "s"
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"nodename\0" No_argument "n"
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"kernel-release\0" No_argument "r"
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"release\0" No_argument "r"
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"kernel-version\0" No_argument "v"
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"machine\0" No_argument "m"
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"processor\0" No_argument "p"
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"hardware-platform\0" No_argument "i"
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"operating-system\0" No_argument "o"
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;
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#endif
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uname_info_t uname_info;
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#if defined(__sparc__) && defined(__linux__)
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char *fake_sparc = getenv("FAKE_SPARC");
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#endif
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const char *unknown_str = "unknown";
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const char *fmt;
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const unsigned short *delta;
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unsigned toprint;
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IF_LONG_OPTS(applet_long_options = uname_longopts);
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toprint = getopt32(argv, options);
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if (argv[optind]) { /* coreutils-6.9 compat */
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bb_show_usage();
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}
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if (toprint & (1 << 8)) { /* -a => all opts on */
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toprint = (1 << 8) - 1;
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unknown_str = ""; /* -a does not print unknown fields */
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}
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if (toprint == 0) { /* no opts => -s (sysname) */
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toprint = 1;
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}
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uname(&uname_info.name); /* never fails */
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#if defined(__sparc__) && defined(__linux__)
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if (fake_sparc && (fake_sparc[0] | 0x20) == 'y') {
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strcpy(uname_info.name.machine, "sparc");
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}
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#endif
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strcpy(uname_info.processor, unknown_str);
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strcpy(uname_info.platform, unknown_str);
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strcpy(uname_info.os, "GNU/Linux");
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#if 0
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/* Fedora does something like this */
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strcpy(uname_info.processor, uname_info.name.machine);
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strcpy(uname_info.platform, uname_info.name.machine);
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if (uname_info.platform[0] == 'i'
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&& uname_info.platform[1]
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&& uname_info.platform[2] == '8'
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&& uname_info.platform[3] == '6'
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) {
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uname_info.platform[1] = '3';
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}
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#endif
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delta = utsname_offset;
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fmt = " %s" + 1;
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do {
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if (toprint & 1) {
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const char *p = (char *)(&uname_info) + *delta;
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if (p[0]) {
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printf(fmt, p);
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fmt = " %s";
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}
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}
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++delta;
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} while (toprint >>= 1);
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bb_putchar('\n');
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fflush_stdout_and_exit(EXIT_SUCCESS); /* coreutils-6.9 compat */
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}
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