mirror of
https://github.com/sheumann/hush.git
synced 2024-11-05 06:07:00 +00:00
6ca409e0e4
trylink: explain how to modify link and drastically decrease amount of padding (unfortunately, needs hand editing ATM). *: add ALIGN1 / ALIGN2 to global strings and arrays of bytes and shorts size saving: 0.5k
103 lines
2.2 KiB
C
103 lines
2.2 KiB
C
/* 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[] ALIGN2 = {
|
|
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);
|
|
int uname_main(int argc, char **argv)
|
|
{
|
|
uname_info_t uname_info;
|
|
#if defined(__sparc__) && defined(__linux__)
|
|
char *fake_sparc = getenv("FAKE_SPARC");
|
|
#endif
|
|
const unsigned short int *delta;
|
|
char toprint;
|
|
|
|
toprint = getopt32(argc, argv, options);
|
|
|
|
if (argc != optind) {
|
|
bb_show_usage();
|
|
}
|
|
|
|
if (toprint & (1 << 6)) {
|
|
toprint = 0x3f;
|
|
}
|
|
|
|
if (toprint == 0) {
|
|
toprint = 1; /* sysname */
|
|
}
|
|
|
|
if (uname(&uname_info.name) == -1) {
|
|
bb_error_msg_and_die("cannot get system name");
|
|
}
|
|
|
|
#if defined(__sparc__) && defined(__linux__)
|
|
if ((fake_sparc != NULL)
|
|
&& ((fake_sparc[0] == 'y')
|
|
|| (fake_sparc[0] == 'Y'))) {
|
|
strcpy(uname_info.name.machine, "sparc");
|
|
}
|
|
#endif
|
|
|
|
strcpy(uname_info.processor, "unknown");
|
|
|
|
delta = utsname_offset;
|
|
do {
|
|
if (toprint & 1) {
|
|
printf(((char *)(&uname_info)) + *delta);
|
|
if (toprint > 1) {
|
|
putchar(' ');
|
|
}
|
|
}
|
|
++delta;
|
|
} while (toprint >>= 1);
|
|
putchar('\n');
|
|
|
|
fflush_stdout_and_exit(EXIT_SUCCESS);
|
|
}
|