5bc8c005a8
Signed-off-by: Pere Orga <gotrunks@gmail.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
62 lines
1.5 KiB
C
62 lines
1.5 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 GPLv2 or later, see file LICENSE in this source tree.
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*/
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//usage:#define setarch_trivial_usage
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//usage: "personality PROG ARGS"
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//usage:#define setarch_full_usage "\n\n"
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//usage: "Personality may be:\n"
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//usage: " linux32 Set 32bit uname emulation\n"
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//usage: " linux64 Set 64bit uname emulation"
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//usage:
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//usage:#define linux32_trivial_usage NOUSAGE_STR
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//usage:#define linux32_full_usage ""
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//usage:
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//usage:#define linux64_trivial_usage NOUSAGE_STR
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//usage:#define linux64_full_usage ""
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#include <sys/personality.h>
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#include "libbb.h"
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int setarch_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
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int setarch_main(int argc UNUSED_PARAM, char **argv)
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{
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int pers;
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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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if (ENABLE_SETARCH && applet_name[0] == 's'
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&& argv[1] && strncpy(argv[1], "linux", 5)
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) {
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applet_name = argv[1];
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argv++;
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}
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if (applet_name[5] == '6') /* linux64 */
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pers = PER_LINUX;
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else if (applet_name[5] == '3') /* linux32 */
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pers = PER_LINUX32;
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else
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bb_show_usage();
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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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BB_EXECVP(argv[0], argv);
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}
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bb_simple_perror_msg_and_die(argv[0]);
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}
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