source: branches/3.2/mindi-busybox/util-linux/setarch.c @ 3232

Last change on this file since 3232 was 3232, checked in by Bruno Cornec, 7 years ago
  • Update mindi-busybox to 1.21.1
File size: 1.5 KB
Line 
1/* vi: set sw=4 ts=4: */
2/*
3 * linux32/linux64 allows for changing uname emulation.
4 *
5 * Copyright 2002 Andi Kleen, SuSE Labs.
6 *
7 * Licensed under GPLv2 or later, see file LICENSE in this source tree.
8 */
9
10//usage:#define setarch_trivial_usage
11//usage:       "personality PROG ARGS"
12//usage:#define setarch_full_usage "\n\n"
13//usage:       "Personality may be:\n"
14//usage:       "    linux32     Set 32bit uname emulation\n"
15//usage:       "    linux64     Set 64bit uname emulation"
16//usage:
17//usage:#define linux32_trivial_usage NOUSAGE_STR
18//usage:#define linux32_full_usage ""
19//usage:
20//usage:#define linux64_trivial_usage NOUSAGE_STR
21//usage:#define linux64_full_usage ""
22
23#include <sys/personality.h>
24
25#include "libbb.h"
26
27int setarch_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
28int setarch_main(int argc UNUSED_PARAM, char **argv)
29{
30    int pers;
31
32    /* Figure out what personality we are supposed to switch to ...
33     * we can be invoked as either:
34     * argv[0],argv[1] == "setarch","personality"
35     * argv[0]         == "personality"
36     */
37    if (ENABLE_SETARCH && applet_name[0] == 's'
38     && argv[1] && strncpy(argv[1], "linux", 5)
39    ) {
40        applet_name = argv[1];
41        argv++;
42    }
43    if (applet_name[5] == '6') /* linux64 */
44        pers = PER_LINUX;
45    else if (applet_name[5] == '3') /* linux32 */
46        pers = PER_LINUX32;
47    else
48        bb_show_usage();
49
50    argv++;
51    if (argv[0] == NULL)
52        bb_show_usage();
53
54    /* Try to set personality */
55    if (personality(pers) >= 0) {
56        /* Try to execute the program */
57        BB_EXECVP(argv[0], argv);
58    }
59
60    bb_simple_perror_msg_and_die(argv[0]);
61}
Note: See TracBrowser for help on using the repository browser.