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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> */
/* Busyboxed by Erik Andersen */
/* Further size reductions by Glenn McGrath and Manuel Novoa III. */
/* Mar 16, 2003 Manuel Novoa III (mjn3@codepoet.org)
*
* Now does proper error checking on i/o. Plus some further space savings.
*/
#include <sys/utsname.h>
#include "libbb.h"
typedef struct {
struct utsname name;
char processor[8]; /* for "unknown" */
} uname_info_t;
static const char options[] ALIGN1 = "snrvmpa";
static const unsigned short utsname_offset[] = {
offsetof(uname_info_t, name.sysname),
offsetof(uname_info_t, name.nodename),
offsetof(uname_info_t, name.release),
offsetof(uname_info_t, name.version),
offsetof(uname_info_t, name.machine),
offsetof(uname_info_t, processor)
};
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 unsigned short *delta;
char toprint;
toprint = getopt32(argv, options);
if (argv[optind]) { /* coreutils-6.9 compat */
bb_show_usage();
}
if (toprint & (1 << 6)) { /* -a => all opts on */
toprint = 0x3f;
}
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");
delta = utsname_offset;
do {
if (toprint & 1) {
/* printf would not be safe here */
fputs((char *)(&uname_info) + *delta, stdout);
if (toprint > 1) {
bb_putchar(' ');
}
}
++delta;
} while (toprint >>= 1);
bb_putchar('\n');
fflush_stdout_and_exit(EXIT_SUCCESS); /* coreutils-6.9 compat */
}
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