54 lines
1.1 KiB
C
54 lines
1.1 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* Linux32/linux64 allows for changing uname emulation.
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*
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* Copyright 2002 Andi Kleen, SuSE Labs.
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*
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* Licensed under GPL v2 or later, see file License for details.
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*/
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#include <errno.h>
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#include <stdio.h>
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#include <sys/personality.h>
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#include "busybox.h"
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int setarch_main(int ATTRIBUTE_UNUSED argc, char **argv);
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int setarch_main(int ATTRIBUTE_UNUSED argc, char **argv)
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{
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int pers = -1;
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/* Figure out what personality we are supposed to switch to ...
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* we can be invoked as either:
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* argv[0],argv[1] -> "setarch","personality"
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* argv[0] -> "personality"
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*/
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retry:
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if (argv[0][5] == '6') /* linux64 */
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pers = PER_LINUX;
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else if (argv[0][5] == '3') /* linux32 */
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pers = PER_LINUX32;
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else if (pers == -1 && argv[1] != NULL) {
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pers = PER_LINUX32;
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++argv;
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goto retry;
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}
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/* make user actually gave us something to do */
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++argv;
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if (argv[0] == NULL)
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bb_show_usage();
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/* Try to set personality */
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if (personality(pers) >= 0) {
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/* Try to execute the program */
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execvp(argv[0], argv);
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}
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bb_perror_msg_and_die("%s", argv[0]);
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}
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