source: trunk/mindi-busybox/util-linux/setarch.c @ 956

Last change on this file since 956 was 821, checked in by bruno, 13 years ago

Addition of busybox 1.2.1 as a mindi-busybox new package
This should avoid delivering binary files in mindi not built there (Fedora and Debian are quite serious about that)

File size: 1.1 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 GPL v2 or later, see file License for details.
8*/
9
10#include <stdlib.h>
11#include <unistd.h>
12#include <string.h>
13#include <errno.h>
14#include <stdio.h>
15#include <sys/personality.h>
16
17#include "busybox.h"
18
19int setarch_main(int ATTRIBUTE_UNUSED argc, char **argv)
20{
21    int pers = -1;
22
23    /* Figure out what personality we are supposed to switch to ...
24     * we can be invoked as either:
25     * argv[0],argv[1] -> "setarch","personality"
26     * argv[0]         -> "personality"
27     */
28retry:
29    if (argv[0][5] == '6') /* linux64 */
30        pers = PER_LINUX;
31    else if (argv[0][5] == '3') /* linux32 */
32        pers = PER_LINUX32;
33    else if (pers == -1 && argv[1] != NULL) {
34        pers = PER_LINUX32;
35        ++argv;
36        goto retry;
37    }
38
39    /* make user actually gave us something to do */
40    ++argv;
41    if (argv[0] == NULL)
42        bb_show_usage();
43
44    /* Try to set personality */
45    if (personality(pers) >= 0) {
46
47        /* Try to execute the program */
48        execvp(argv[0], argv);
49    }
50
51    bb_perror_msg_and_die("%s", argv[0]);
52}
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