/* vi: set sw=4 ts=4: */
/*
- * Linux32/linux64 allows for changing uname emulation.
+ * linux32/linux64 allows for changing uname emulation.
*
* Copyright 2002 Andi Kleen, SuSE Labs.
- * This file is subject to the GNU General Public License v2
*
- * Licensed under GPL v2 or later, see file License for details.
+ * Licensed under GPLv2 or later, see file LICENSE in this source tree.
*/
-#include <stdlib.h>
-#include <unistd.h>
-#include <string.h>
-#include <errno.h>
-#include <stdio.h>
#include <sys/personality.h>
-#include "busybox.h"
+#include "libbb.h"
-int setarch_main(int argc, char **argv)
+int setarch_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int setarch_main(int argc UNUSED_PARAM, char **argv)
{
- int pers = -1;
+ 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"
+ * argv[0],argv[1] == "setarch","personality"
+ * argv[0] == "personality"
*/
-retry:
- if (!strcmp(argv[0], "linux64"))
+ 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 (!strcmp(argv[0], "linux32"))
- pers = PER_LINUX32;
- else if (pers == -1 && argv[1] != NULL) {
+ else if (applet_name[5] == '3') /* linux32 */
pers = PER_LINUX32;
- ++argv;
- goto retry;
- }
+ else
+ bb_show_usage();
- /* make user actually gave us something to do */
- ++argv;
+ argv++;
if (argv[0] == NULL)
bb_show_usage();
/* Try to set personality */
- if (personality(pers) < 0)
- goto failure;
-
- /* Try to execute the program */
- execvp(argv[0], argv);
+ if (personality(pers) >= 0) {
+ /* Try to execute the program */
+ BB_EXECVP(argv[0], argv);
+ }
-failure:
- bb_perror_msg_and_die(argv[0]);
+ bb_simple_perror_msg_and_die(argv[0]);
}