static void set_fake_cookie_dir()
{
char *ctx_dir = NULL;
ctx_dir = g_dir_make_tmp(NULL, NULL);
g_assert_nonnull(ctx_dir);
g_test_queue_free(ctx_dir);
g_test_queue_destroy((GDestroyNotify) rm_rf_tmp, ctx_dir);
g_test_queue_destroy((GDestroyNotify) set_cookie_dir, SC_COOKIE_DIR);
set_cookie_dir(ctx_dir);
}
// Check that allocating a namespace group sets up internal data structures to
// safe values.
static void test_sc_alloc_ns_group()
{
struct sc_ns_group *group = NULL;
group = sc_alloc_ns_group();
g_test_queue_free(group);
g_assert_nonnull(group);
g_assert_cmpint(group->dir_fd, ==, -1);
g_assert_cmpint(group->lock_fd, ==, -1);
g_assert_cmpint(group->event_fd, ==, -1);
g_assert_cmpint(group->child, ==, 0);
g_assert_cmpint(group->should_populate, ==, false);
g_assert_null(group->name);
}
static void test_sc_unlock_ns_mutex_precondition()
{
sc_test_use_fake_ns_dir();
if (g_test_subprocess()) {
struct sc_ns_group *group = sc_alloc_ns_group();
g_test_queue_free(group);
// Try to unlock the mutex, this should abort because we never opened the
// lock file and don't have a valid file descriptor.
sc_unlock_ns_mutex(group);
return;
}
g_test_trap_subprocess(NULL, 0, 0);
g_test_trap_assert_failed();
}
// Use temporary directory for namespace groups.
//
// The directory is automatically reset to the real value at the end of the
// test.
static const char *sc_test_use_fake_ns_dir()
{
char *ns_dir = NULL;
if (g_test_subprocess()) {
// Check if the environment variable is set. If so then someone is already
// managing the temporary directory and we should not create a new one.
ns_dir = getenv("SNAP_CONFINE_NS_DIR");
g_assert_nonnull(ns_dir);
} else {
ns_dir = g_dir_make_tmp(NULL, NULL);
g_assert_nonnull(ns_dir);
g_test_queue_free(ns_dir);
g_assert_cmpint(setenv("SNAP_CONFINE_NS_DIR", ns_dir, 0), ==,
0);
g_test_queue_destroy((GDestroyNotify) unsetenv,
"SNAP_CONFINE_NS_DIR");
g_test_queue_destroy((GDestroyNotify) rm_rf_tmp, ns_dir);
}
g_test_queue_destroy((GDestroyNotify) sc_set_ns_dir, SC_NS_DIR);
sc_set_ns_dir(ns_dir);
return ns_dir;
}