busybox/util-linux/setarch.c
Denys Vlasenko 9768a82eb0 *: fix "see file License ..." - the file is named LICENSE (in uppercase)
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2010-08-16 03:04:14 +02:00

49 lines
1.1 KiB
C

/* vi: set sw=4 ts=4: */
/*
* linux32/linux64 allows for changing uname emulation.
*
* Copyright 2002 Andi Kleen, SuSE Labs.
*
* Licensed under GPL v2 or later, see file LICENSE for details.
*/
#include <sys/personality.h>
#include "libbb.h"
int setarch_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int setarch_main(int argc UNUSED_PARAM, char **argv)
{
int pers;
/* Figure out what personality we are supposed to switch to ...
* we can be invoked as either:
* argv[0],argv[1] == "setarch","personality"
* argv[0] == "personality"
*/
if (ENABLE_SETARCH && applet_name[0] == 's'
&& argv[1] && strncpy(argv[1], "linux", 5)
) {
applet_name = argv[1];
argv++;
}
if (applet_name[5] == '6') /* linux64 */
pers = PER_LINUX;
else if (applet_name[5] == '3') /* linux32 */
pers = PER_LINUX32;
else
bb_show_usage();
argv++;
if (argv[0] == NULL)
bb_show_usage();
/* Try to set personality */
if (personality(pers) >= 0) {
/* Try to execute the program */
BB_EXECVP(argv[0], argv);
}
bb_simple_perror_msg_and_die(argv[0]);
}