test-ns.c

   1 /*-*- Mode: C; c-basic-offset: 8 -*-*/
   2
   3 /***
   4   This file is part of systemd.
   5
   6   Copyright 2010 Lennart Poettering
   7
   8   systemd is free software; you can redistribute it and/or modify it
   9   under the terms of the GNU General Public License as published by
  10   the Free Software Foundation; either version 2 of the License, or
  11   (at your option) any later version.
  12
  13   systemd is distributed in the hope that it will be useful, but
  14   WITHOUT ANY WARRANTY; without even the implied warranty of
  15   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  16   General Public License for more details.
  17
  18   You should have received a copy of the GNU General Public License
  19   along with systemd; If not, see <http://www.gnu.org/licenses/>.
  20 ***/
  21
  22 #include <stdlib.h>
  23 #include <string.h>
  24 #include <unistd.h>
  25 #include <sys/mount.h>
  26 #include <linux/fs.h>
  27
  28 #include "namespace.h"
  29 #include "log.h"
  30
  31 int main(int argc, char *argv[]) {
  32         const char * const writable[] = {
  33                 "/home",
  34                 NULL
  35         };
  36
  37         const char * const readable[] = {
  38                 "/",
  39                 "/usr",
  40                 "/boot",
  41                 NULL
  42         };
  43
  44         const char * const inaccessible[] = {
  45                 "/home/lennart/projects",
  46                 NULL
  47         };
  48
  49         int r;
  50
  51         if ((r = setup_namespace((char**) writable, (char**) readable, (char**) inaccessible, true, MS_SHARED)) < 0) {
  52                 log_error("Failed to setup namespace: %s", strerror(-r));
  53                 return 1;
  54         }
  55
  56         execl("/bin/sh", "/bin/sh", NULL);
  57         log_error("execl(): %m");
  58
  59         return 1;
  60 }