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