src/test/test-ns.c

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2
   3 #include <errno.h>
   4 #include <stdlib.h>
   5 #include <unistd.h>
   6
   7 #include "log.h"
   8 #include "namespace.h"
   9 #include "tests.h"
  10
  11 int main(int argc, char *argv[]) {
  12         const char * const writable[] = {
  13                 "/home",
  14                 "-/home/lennart/projects/foobar", /* this should be masked automatically */
  15                 NULL
  16         };
  17
  18         const char * const readonly[] = {
  19                 /* "/", */
  20                 /* "/usr", */
  21                 "/boot",
  22                 "/lib",
  23                 "/usr/lib",
  24                 "-/lib64",
  25                 "-/usr/lib64",
  26                 NULL
  27         };
  28
  29         const char *inaccessible[] = {
  30                 "/home/lennart/projects",
  31                 NULL
  32         };
  33
  34         static const NamespaceInfo ns_info = {
  35                 .private_dev = true,
  36                 .protect_control_groups = true,
  37                 .protect_kernel_tunables = true,
  38                 .protect_kernel_modules = true,
  39         };
  40
  41         char *root_directory;
  42         char *projects_directory;
  43         int r;
  44         char tmp_dir[] = "/tmp/systemd-private-XXXXXX",
  45              var_tmp_dir[] = "/var/tmp/systemd-private-XXXXXX";
  46
  47         test_setup_logging(LOG_DEBUG);
  48
  49         assert_se(mkdtemp(tmp_dir));
  50         assert_se(mkdtemp(var_tmp_dir));
  51
  52         root_directory = getenv("TEST_NS_CHROOT");
  53         projects_directory = getenv("TEST_NS_PROJECTS");
  54
  55         if (projects_directory)
  56                 inaccessible[0] = projects_directory;
  57
  58         log_info("Inaccessible directory: '%s'", inaccessible[0]);
  59         if (root_directory)
  60                 log_info("Chroot: '%s'", root_directory);
  61         else
  62                 log_info("Not chrooted");
  63
  64         r = setup_namespace(root_directory,
  65                             NULL,
  66                             &ns_info,
  67                             (char **) writable,
  68                             (char **) readonly,
  69                             (char **) inaccessible,
  70                             NULL,
  71                             &(BindMount) { .source = (char*) "/usr/bin", .destination = (char*) "/etc/systemd", .read_only = true }, 1,
  72                             &(TemporaryFileSystem) { .path = (char*) "/var", .options = (char*) "ro" }, 1,
  73                             tmp_dir,
  74                             var_tmp_dir,
  75                             NULL,
  76                             PROTECT_HOME_NO,
  77                             PROTECT_SYSTEM_NO,
  78                             0,
  79                             NULL,
  80                             0,
  81                             NULL,
  82                             NULL,
  83                             0,
  84                             NULL,
  85                             NULL,
  86                             0,
  87                             NULL);
  88         if (r < 0) {
  89                 log_error_errno(r, "Failed to set up namespace: %m");
  90
  91                 log_info("Usage:\n"
  92                          "  sudo TEST_NS_PROJECTS=/home/lennart/projects ./test-ns\n"
  93                          "  sudo TEST_NS_CHROOT=/home/alban/debian-tree TEST_NS_PROJECTS=/home/alban/debian-tree/home/alban/Documents ./test-ns");
  94
  95                 return 1;
  96         }
  97
  98         execl("/bin/sh", "/bin/sh", NULL);
  99         log_error_errno(errno, "execl(): %m");
 100
 101         return 1;
 102 }