int main (int argc, char *argv[]) { guestfs_h *g = guestfs_create (); /* Call some non-daemon functions that have a String parameter, but * setting that parameter to NULL. Previously this would cause a * segfault inside libguestfs. After this bug was fixed, this * turned into an error message. */ assert (guestfs_add_drive (g, NULL) == -1); assert (guestfs_config (g, NULL, NULL) == -1); /* This optional argument must not be NULL. */ assert (guestfs_add_drive_opts (g, "/dev/null", GUESTFS_ADD_DRIVE_OPTS_FORMAT, NULL, -1) == -1); /* These can be safely set to NULL, should be no error. */ assert (guestfs_set_path (g, NULL) == 0); assert (guestfs_set_append (g, NULL) == 0); assert (guestfs_set_qemu (g, NULL) == 0); guestfs_close (g); exit (EXIT_SUCCESS); }
static void * start_thread (void *vi) { guestfs_h *g; int r, thread_id = *(int *)vi; const char *error; g = guestfs_create (); if (g == NULL) { perror ("guestfs_create"); *(int *)vi = -1; pthread_exit (vi); } if (guestfs_add_drive_opts (g, "/dev/null", GUESTFS_ADD_DRIVE_OPTS_FORMAT, "raw", GUESTFS_ADD_DRIVE_OPTS_READONLY, 1, -1) == -1) { *(int *)vi = -1; pthread_exit (vi); } /* Fake out qemu. */ if (guestfs_set_qemu (g, "/bin/true") == -1) { *(int *)vi = -1; pthread_exit (vi); } /* Wait for the other threads to finish starting up. */ r = pthread_barrier_wait (&barrier); if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD) { fprintf (stderr, "pthread_barrier_wait: [thread %d]: %s\n", thread_id, strerror (r)); *(int *)vi = -1; pthread_exit (vi); } /* Launch the handle. Because of the faked out qemu, we expect this * will fail with "child process died unexpectedly". We are * interested in other failures. */ guestfs_push_error_handler (g, NULL, NULL); r = guestfs_launch (g); error = guestfs_last_error (g); if (r == 0) { /* This should NOT happen. */ fprintf (stderr, "rhbz790721: [thread %d]: " "strangeness in test: expected launch to fail, but it didn't!\n", thread_id); *(int *)vi = -1; pthread_exit (vi); } if (error == NULL) { /* This also should NOT happen. */ fprintf (stderr, "rhbz790721: [thread %d]: " "strangeness in test: no error message!\n", thread_id); *(int *)vi = -1; pthread_exit (vi); } /* If this happens, it indicates a bug/race in the appliance * building code which is what this regression test is designed to * spot. */ if (STRNEQ (error, "child process died unexpectedly")) { fprintf (stderr, "rhbz790721: [thread %d]: error: %s\n", thread_id, error); *(int *)vi = -1; pthread_exit (vi); } guestfs_pop_error_handler (g); /* Close the handle. */ guestfs_close (g); *(int *)vi = 0; pthread_exit (vi); }