src/test/test-ns.c

   1 /***
   2   This file is part of systemd.
   3
   4   Copyright 2010 Lennart Poettering
   5
   6   systemd is free software; you can redistribute it and/or modify it
   7   under the terms of the GNU Lesser General Public License as published by
   8   the Free Software Foundation; either version 2.1 of the License, or
   9   (at your option) any later version.
  10
  11   systemd is distributed in the hope that it will be useful, but
  12   WITHOUT ANY WARRANTY; without even the implied warranty of
  13   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  14   Lesser General Public License for more details.
  15
  16   You should have received a copy of the GNU Lesser General Public License
  17   along with systemd; If not, see <http://www.gnu.org/licenses/>.
  18 ***/
  19
  20 #include <stdlib.h>
  21 #include <unistd.h>
  22
  23 #include "log.h"
  24 #include "namespace.h"
  25
  26 int main(int argc, char *argv[]) {
  27         const char * const writable[] = {
  28                 "/home",
  29                 NULL
  30         };
  31
  32         const char * const readonly[] = {
  33                 "/",
  34                 "/usr",
  35                 "/boot",
  36                 NULL
  37         };
  38
  39         const char *inaccessible[] = {
  40                 "/home/lennart/projects",
  41                 NULL
  42         };
  43         char *root_directory;
  44         char *projects_directory;
  45
  46         int r;
  47         char tmp_dir[] = "/tmp/systemd-private-XXXXXX",
  48              var_tmp_dir[] = "/var/tmp/systemd-private-XXXXXX";
  49
  50         assert_se(mkdtemp(tmp_dir));
  51         assert_se(mkdtemp(var_tmp_dir));
  52
  53         root_directory = getenv("TEST_NS_CHROOT");
  54         projects_directory = getenv("TEST_NS_PROJECTS");
  55
  56         if (projects_directory)
  57                 inaccessible[0] = projects_directory;
  58
  59         log_info("Inaccessible directory: '%s'", inaccessible[0]);
  60         if (root_directory)
  61                 log_info("Chroot: '%s'", root_directory);
  62         else
  63                 log_info("Not chrooted");
  64
  65         r = setup_namespace(root_directory,
  66                             (char **) writable,
  67                             (char **) readonly,
  68                             (char **) inaccessible,
  69                             tmp_dir,
  70                             var_tmp_dir,
  71                             NULL,
  72                             true,
  73                             PROTECT_HOME_NO,
  74                             PROTECT_SYSTEM_NO,
  75                             0);
  76         if (r < 0) {
  77                 log_error_errno(r, "Failed to setup namespace: %m");
  78
  79                 log_info("Usage:\n"
  80                          "  sudo TEST_NS_PROJECTS=/home/lennart/projects ./test-ns\n"
  81                          "  sudo TEST_NS_CHROOT=/home/alban/debian-tree TEST_NS_PROJECTS=/home/alban/debian-tree/home/alban/Documents ./test-ns");
  82
  83                 return 1;
  84         }
  85
  86         execl("/bin/sh", "/bin/sh", NULL);
  87         log_error_errno(errno, "execl(): %m");
  88
  89         return 1;
  90 }