1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
|
/* vi: set sw=4 ts=4: */
/*
* Mini chroot implementation for busybox
*
*
* Copyright (C) 1999,2000,2001 by Lineo, inc.
* Written by Erik Andersen <andersen@lineo.com>, <andersee@debian.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include "busybox.h"
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <errno.h>
int chroot_main(int argc, char **argv)
{
char *prog;
if ((argc < 2) || (**(argv + 1) == '-')) {
show_usage();
}
argc--;
argv++;
if (chroot(*argv) || (chdir("/"))) {
perror_msg_and_die("cannot change root directory to %s", *argv);
}
argc--;
argv++;
if (argc >= 1) {
prog = *argv;
execvp(*argv, argv);
} else {
#ifndef BB_SH
prog = getenv("SHELL");
if (!prog)
prog = "/bin/sh";
execlp(prog, prog, NULL);
#else
shell_main(argc, argv);
return EXIT_SUCCESS;
#endif
}
perror_msg_and_die("cannot execute %s", prog);
}
/*
Local Variables:
c-file-style: "linux"
c-basic-offset: 4
tab-width: 4
End:
*/
|
