static int operation_done(sd_event_source *s, const siginfo_t *si, void *userdata) {
_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
Operation *o = userdata;
int r;
assert(o);
assert(si);
log_debug("Operating " PID_FMT " is now complete with code=%s status=%i",
o->pid,
sigchld_code_to_string(si->si_code), si->si_status);
o->pid = 0;
if (si->si_code != CLD_EXITED) {
r = sd_bus_error_setf(&error, SD_BUS_ERROR_FAILED, "Child died abnormally.");
goto fail;
}
if (si->si_status == EXIT_SUCCESS)
r = 0;
else if (read(o->errno_fd, &r, sizeof(r)) != sizeof(r)) { /* Try to acquire error code for failed operation */
r = sd_bus_error_setf(&error, SD_BUS_ERROR_FAILED, "Child failed.");
goto fail;
}
if (o->done) {
/* A completion routine is set for this operation, call it. */
r = o->done(o, r, &error);
if (r < 0) {
if (!sd_bus_error_is_set(&error))
sd_bus_error_set_errno(&error, r);
goto fail;
}
} else {
/* The default operation when done is to simply return an error on failure or an empty success
* message on success. */
if (r < 0) {
sd_bus_error_set_errno(&error, r);
goto fail;
}
r = sd_bus_reply_method_return(o->message, NULL);
if (r < 0)
log_error_errno(r, "Failed to reply to message: %m");
}
operation_free(o);
return 0;
fail:
r = sd_bus_reply_method_error(o->message, &error);
if (r < 0)
log_error_errno(r, "Failed to reply to message: %m");
operation_free(o);
return 0;
}
_public_ int sd_bus_reply_method_error(
sd_bus_message *call,
const sd_bus_error *e) {
_cleanup_bus_message_unref_ sd_bus_message *m = NULL;
int r;
assert_return(call, -EINVAL);
assert_return(call->sealed, -EPERM);
assert_return(call->header->type == SD_BUS_MESSAGE_METHOD_CALL, -EINVAL);
assert_return(sd_bus_error_is_set(e), -EINVAL);
assert_return(call->bus, -EINVAL);
assert_return(!bus_pid_changed(call->bus), -ECHILD);
if (!BUS_IS_OPEN(call->bus->state))
return -ENOTCONN;
if (call->header->flags & BUS_MESSAGE_NO_REPLY_EXPECTED)
return 0;
r = sd_bus_message_new_method_error(call, &m, e);
if (r < 0)
return r;
return sd_bus_send(call->bus, m, NULL);
}
_public_ int sd_bus_reply_method_errno(
sd_bus_message *call,
int error,
const sd_bus_error *p) {
_cleanup_(sd_bus_error_free) sd_bus_error berror = SD_BUS_ERROR_NULL;
assert_return(call, -EINVAL);
assert_return(call->sealed, -EPERM);
assert_return(call->header->type == SD_BUS_MESSAGE_METHOD_CALL, -EINVAL);
assert_return(call->bus, -EINVAL);
assert_return(!bus_pid_changed(call->bus), -ECHILD);
if (!BUS_IS_OPEN(call->bus->state))
return -ENOTCONN;
if (call->header->flags & BUS_MESSAGE_NO_REPLY_EXPECTED)
return 0;
if (sd_bus_error_is_set(p))
return sd_bus_reply_method_error(call, p);
sd_bus_error_set_errno(&berror, error);
return sd_bus_reply_method_error(call, &berror);
}
static void stop_scope_unit(sd_bus *connection, const char *unit_name) {
sd_bus_error error = SD_BUS_ERROR_NULL;
int rc = sd_bus_call_method(connection, systemd_bus_name, systemd_path_name, manager_interface,
"StopUnit", &error, NULL, "ss", unit_name, "fail");
if (rc < 0) {
if (sd_bus_error_is_set(&error)) {
// NoSuchUnit errors are expected as the contained processes can die at any point.
if (strcmp(error.name, "org.freedesktop.systemd1.NoSuchUnit"))
errx(EXIT_FAILURE, "%s", error.message);
sd_bus_error_free(&error);
} else
errx(EXIT_FAILURE, "%s", strerror(-rc));
}
}
static void start_scope_unit(sd_bus *connection, pid_t child_pid, long memory_limit,
char *devices, const char *unit_name) {
sd_bus_message *message = NULL;
check(sd_bus_message_new_method_call(connection, &message, systemd_bus_name, systemd_path_name,
manager_interface, "StartTransientUnit"));
check(sd_bus_message_append(message, "ss", unit_name, "fail"));
check(sd_bus_message_open_container(message, 'a', "(sv)"));
check(sd_bus_message_append(message, "(sv)", "PIDs", "au", 1, child_pid));
check(sd_bus_message_append(message, "(sv)", "Description", "s",
"Playpen application sandbox"));
check(sd_bus_message_append(message, "(sv)", "MemoryLimit", "t",
1024ULL * 1024ULL * (unsigned long long)memory_limit));
check(sd_bus_message_append(message, "(sv)", "DevicePolicy", "s", "strict"));
if (devices) {
check(sd_bus_message_open_container(message, 'r', "sv"));
check(sd_bus_message_append(message, "s", "DeviceAllow"));
check(sd_bus_message_open_container(message, 'v', "a(ss)"));
check(sd_bus_message_open_container(message, 'a', "(ss)"));
for (char *s_ptr = devices, *saveptr; ; s_ptr = NULL) {
const char *device = strtok_r(s_ptr, ",", &saveptr);
if (!device) break;
char *split = strchr(device, ':');
if (!split) errx(EXIT_FAILURE, "invalid device parameter `%s`", device);
*split = '\0';
sd_bus_message_append(message, "(ss)", device, split + 1);
}
check(sd_bus_message_close_container(message));
check(sd_bus_message_close_container(message));
check(sd_bus_message_close_container(message));
}
check(sd_bus_message_append(message, "(sv)", "CPUAccounting", "b", 1));
check(sd_bus_message_append(message, "(sv)", "BlockIOAccounting", "b", 1));
check(sd_bus_message_close_container(message));
check(sd_bus_message_append(message, "a(sa(sv))", 0));
sd_bus_error error = SD_BUS_ERROR_NULL;
int rc = sd_bus_call(connection, message, 0, &error, NULL);
if (rc < 0) errx(EXIT_FAILURE, "%s",
sd_bus_error_is_set(&error) ? error.message : strerror(-rc));
sd_bus_message_unref(message);
wait_for_unit(child_pid, unit_name);
}
static int bus_scope_abandon(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
Scope *s = userdata;
int r;
assert(bus);
assert(message);
assert(s);
r = scope_abandon(s);
if (sd_bus_error_is_set(error))
return r;
if (r == -ESTALE)
return sd_bus_error_setf(error, BUS_ERROR_SCOPE_NOT_RUNNING, "Scope %s is not running, cannot abandon.", UNIT(s)->id);
return sd_bus_reply_method_return(message, NULL);
}
int bus_maybe_reply_error(sd_bus_message *m, int r, sd_bus_error *error) {
assert(m);
if (r < 0) {
if (m->header->type == SD_BUS_MESSAGE_METHOD_CALL)
sd_bus_reply_method_errno(m, r, error);
} else if (sd_bus_error_is_set(error)) {
if (m->header->type == SD_BUS_MESSAGE_METHOD_CALL)
sd_bus_reply_method_error(m, error);
} else
return r;
log_debug("Failed to process message [type=%s sender=%s path=%s interface=%s member=%s signature=%s]: %s",
bus_message_type_to_string(m->header->type),
strna(m->sender),
strna(m->path),
strna(m->interface),
strna(m->member),
strna(m->root_container.signature),
bus_error_message(error, r));
return 1;
}
int main(int argc, char *argv[]) {
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL, second = SD_BUS_ERROR_NULL;
const sd_bus_error const_error = SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_FILE_EXISTS, "const error");
const sd_bus_error temporarily_const_error = {
.name = SD_BUS_ERROR_ACCESS_DENIED,
.message = "oh! no",
._need_free = -1
};
assert_se(!sd_bus_error_is_set(&error));
assert_se(sd_bus_error_set(&error, SD_BUS_ERROR_NOT_SUPPORTED, "xxx") == -ENOTSUP);
assert_se(streq(error.name, SD_BUS_ERROR_NOT_SUPPORTED));
assert_se(streq(error.message, "xxx"));
assert_se(sd_bus_error_has_name(&error, SD_BUS_ERROR_NOT_SUPPORTED));
assert_se(sd_bus_error_get_errno(&error) == ENOTSUP);
assert_se(sd_bus_error_is_set(&error));
sd_bus_error_free(&error);
assert_se(!sd_bus_error_is_set(&error));
assert_se(sd_bus_error_setf(&error, SD_BUS_ERROR_FILE_NOT_FOUND, "yyy %i", -1) == -ENOENT);
assert_se(streq(error.name, SD_BUS_ERROR_FILE_NOT_FOUND));
assert_se(streq(error.message, "yyy -1"));
assert_se(sd_bus_error_has_name(&error, SD_BUS_ERROR_FILE_NOT_FOUND));
assert_se(sd_bus_error_get_errno(&error) == ENOENT);
assert_se(sd_bus_error_is_set(&error));
assert_se(!sd_bus_error_is_set(&second));
assert_se(second._need_free == 0);
assert_se(error._need_free > 0);
assert_se(sd_bus_error_copy(&second, &error) == -ENOENT);
assert_se(second._need_free > 0);
assert_se(streq(error.name, second.name));
assert_se(streq(error.message, second.message));
assert_se(sd_bus_error_get_errno(&second) == ENOENT);
assert_se(sd_bus_error_has_name(&second, SD_BUS_ERROR_FILE_NOT_FOUND));
assert_se(sd_bus_error_is_set(&second));
sd_bus_error_free(&error);
sd_bus_error_free(&second);
assert_se(!sd_bus_error_is_set(&second));
assert_se(const_error._need_free == 0);
assert_se(sd_bus_error_copy(&second, &const_error) == -EEXIST);
assert_se(second._need_free == 0);
assert_se(streq(const_error.name, second.name));
assert_se(streq(const_error.message, second.message));
assert_se(sd_bus_error_get_errno(&second) == EEXIST);
assert_se(sd_bus_error_has_name(&second, SD_BUS_ERROR_FILE_EXISTS));
assert_se(sd_bus_error_is_set(&second));
sd_bus_error_free(&second);
assert_se(!sd_bus_error_is_set(&second));
assert_se(temporarily_const_error._need_free < 0);
assert_se(sd_bus_error_copy(&second, &temporarily_const_error) == -EACCES);
assert_se(second._need_free > 0);
assert_se(streq(temporarily_const_error.name, second.name));
assert_se(streq(temporarily_const_error.message, second.message));
assert_se(sd_bus_error_get_errno(&second) == EACCES);
assert_se(sd_bus_error_has_name(&second, SD_BUS_ERROR_ACCESS_DENIED));
assert_se(sd_bus_error_is_set(&second));
assert_se(!sd_bus_error_is_set(&error));
assert_se(sd_bus_error_set_const(&error, "System.Error.EUCLEAN", "Hallo") == -EUCLEAN);
assert_se(streq(error.name, "System.Error.EUCLEAN"));
assert_se(streq(error.message, "Hallo"));
assert_se(sd_bus_error_has_name(&error, "System.Error.EUCLEAN"));
assert_se(sd_bus_error_get_errno(&error) == EUCLEAN);
assert_se(sd_bus_error_is_set(&error));
sd_bus_error_free(&error);
assert_se(!sd_bus_error_is_set(&error));
assert_se(sd_bus_error_set_errno(&error, EBUSY) == -EBUSY);
assert_se(streq(error.name, "System.Error.EBUSY"));
assert_se(streq(error.message, strerror(EBUSY)));
assert_se(sd_bus_error_has_name(&error, "System.Error.EBUSY"));
assert_se(sd_bus_error_get_errno(&error) == EBUSY);
assert_se(sd_bus_error_is_set(&error));
sd_bus_error_free(&error);
assert_se(!sd_bus_error_is_set(&error));
assert_se(sd_bus_error_set_errnof(&error, EIO, "Waldi %c", 'X') == -EIO);
assert_se(streq(error.name, SD_BUS_ERROR_IO_ERROR));
assert_se(streq(error.message, "Waldi X"));
assert_se(sd_bus_error_has_name(&error, SD_BUS_ERROR_IO_ERROR));
assert_se(sd_bus_error_get_errno(&error) == EIO);
assert_se(sd_bus_error_is_set(&error));
return 0;
}
static void test_error(void) {
_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL, second = SD_BUS_ERROR_NULL;
const sd_bus_error const_error = SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_FILE_EXISTS, "const error");
const sd_bus_error temporarily_const_error = {
.name = SD_BUS_ERROR_ACCESS_DENIED,
.message = "oh! no",
._need_free = -1
};
assert_se(!sd_bus_error_is_set(&error));
assert_se(sd_bus_error_set(&error, SD_BUS_ERROR_NOT_SUPPORTED, "xxx") == -EOPNOTSUPP);
assert_se(streq(error.name, SD_BUS_ERROR_NOT_SUPPORTED));
assert_se(streq(error.message, "xxx"));
assert_se(sd_bus_error_has_name(&error, SD_BUS_ERROR_NOT_SUPPORTED));
assert_se(sd_bus_error_get_errno(&error) == EOPNOTSUPP);
assert_se(sd_bus_error_is_set(&error));
sd_bus_error_free(&error);
assert_se(!sd_bus_error_is_set(&error));
assert_se(sd_bus_error_setf(&error, SD_BUS_ERROR_FILE_NOT_FOUND, "yyy %i", -1) == -ENOENT);
assert_se(streq(error.name, SD_BUS_ERROR_FILE_NOT_FOUND));
assert_se(streq(error.message, "yyy -1"));
assert_se(sd_bus_error_has_name(&error, SD_BUS_ERROR_FILE_NOT_FOUND));
assert_se(sd_bus_error_get_errno(&error) == ENOENT);
assert_se(sd_bus_error_is_set(&error));
assert_se(!sd_bus_error_is_set(&second));
assert_se(second._need_free == 0);
assert_se(error._need_free > 0);
assert_se(sd_bus_error_copy(&second, &error) == -ENOENT);
assert_se(second._need_free > 0);
assert_se(streq(error.name, second.name));
assert_se(streq(error.message, second.message));
assert_se(sd_bus_error_get_errno(&second) == ENOENT);
assert_se(sd_bus_error_has_name(&second, SD_BUS_ERROR_FILE_NOT_FOUND));
assert_se(sd_bus_error_is_set(&second));
sd_bus_error_free(&error);
sd_bus_error_free(&second);
assert_se(!sd_bus_error_is_set(&second));
assert_se(const_error._need_free == 0);
assert_se(sd_bus_error_copy(&second, &const_error) == -EEXIST);
assert_se(second._need_free == 0);
assert_se(streq(const_error.name, second.name));
assert_se(streq(const_error.message, second.message));
assert_se(sd_bus_error_get_errno(&second) == EEXIST);
assert_se(sd_bus_error_has_name(&second, SD_BUS_ERROR_FILE_EXISTS));
assert_se(sd_bus_error_is_set(&second));
sd_bus_error_free(&second);
assert_se(!sd_bus_error_is_set(&second));
assert_se(temporarily_const_error._need_free < 0);
assert_se(sd_bus_error_copy(&second, &temporarily_const_error) == -EACCES);
assert_se(second._need_free > 0);
assert_se(streq(temporarily_const_error.name, second.name));
assert_se(streq(temporarily_const_error.message, second.message));
assert_se(sd_bus_error_get_errno(&second) == EACCES);
assert_se(sd_bus_error_has_name(&second, SD_BUS_ERROR_ACCESS_DENIED));
assert_se(sd_bus_error_is_set(&second));
assert_se(!sd_bus_error_is_set(&error));
assert_se(sd_bus_error_set_const(&error, "System.Error.EUCLEAN", "Hallo") == -EUCLEAN);
assert_se(streq(error.name, "System.Error.EUCLEAN"));
assert_se(streq(error.message, "Hallo"));
assert_se(sd_bus_error_has_name(&error, "System.Error.EUCLEAN"));
assert_se(sd_bus_error_get_errno(&error) == EUCLEAN);
assert_se(sd_bus_error_is_set(&error));
sd_bus_error_free(&error);
assert_se(!sd_bus_error_is_set(&error));
assert_se(sd_bus_error_set_errno(&error, EBUSY) == -EBUSY);
assert_se(streq(error.name, "System.Error.EBUSY"));
assert_se(streq(error.message, strerror(EBUSY)));
assert_se(sd_bus_error_has_name(&error, "System.Error.EBUSY"));
assert_se(sd_bus_error_get_errno(&error) == EBUSY);
assert_se(sd_bus_error_is_set(&error));
sd_bus_error_free(&error);
assert_se(!sd_bus_error_is_set(&error));
assert_se(sd_bus_error_set_errnof(&error, EIO, "Waldi %c", 'X') == -EIO);
assert_se(streq(error.name, SD_BUS_ERROR_IO_ERROR));
assert_se(streq(error.message, "Waldi X"));
assert_se(sd_bus_error_has_name(&error, SD_BUS_ERROR_IO_ERROR));
assert_se(sd_bus_error_get_errno(&error) == EIO);
assert_se(sd_bus_error_is_set(&error));
}
extern const sd_bus_error_map __start_BUS_ERROR_MAP[];
extern const sd_bus_error_map __stop_BUS_ERROR_MAP[];
static void dump_mapping_table(void) {
const sd_bus_error_map *m;
printf("----- errno mappings ------\n");
m = __start_BUS_ERROR_MAP;
while (m < __stop_BUS_ERROR_MAP) {
if (m->code == BUS_ERROR_MAP_END_MARKER) {
m = ALIGN8_PTR(m+1);
continue;
}
printf("%s -> %i/%s\n", strna(m->name), m->code, strna(errno_to_name(m->code)));
m ++;
}
printf("---------------------------\n");
}
static void test_errno_mapping_standard(void) {
assert_se(sd_bus_error_set(NULL, "System.Error.EUCLEAN", NULL) == -EUCLEAN);
assert_se(sd_bus_error_set(NULL, "System.Error.EBUSY", NULL) == -EBUSY);
assert_se(sd_bus_error_set(NULL, "System.Error.EINVAL", NULL) == -EINVAL);
assert_se(sd_bus_error_set(NULL, "System.Error.WHATSIT", NULL) == -EIO);
}
int main(int argc, char *argv[]) {
_cleanup_(sd_bus_error_free) sd_bus_error err = SD_BUS_ERROR_NULL;
Manager *m = NULL;
Unit *a = NULL, *b = NULL, *c = NULL, *d = NULL, *e = NULL, *g = NULL, *h = NULL;
FILE *serial = NULL;
FDSet *fdset = NULL;
Job *j;
int r;
/* prepare the test */
assert_se(set_unit_path(TEST_DIR) >= 0);
r = manager_new(MANAGER_USER, true, &m);
if (IN_SET(r, -EPERM, -EACCES, -EADDRINUSE, -EHOSTDOWN, -ENOENT, -ENOEXEC)) {
printf("Skipping test: manager_new: %s", strerror(-r));
return EXIT_TEST_SKIP;
}
assert_se(r >= 0);
assert_se(manager_startup(m, serial, fdset) >= 0);
printf("Load1:\n");
assert_se(manager_load_unit(m, "a.service", NULL, NULL, &a) >= 0);
assert_se(manager_load_unit(m, "b.service", NULL, NULL, &b) >= 0);
assert_se(manager_load_unit(m, "c.service", NULL, NULL, &c) >= 0);
manager_dump_units(m, stdout, "\t");
printf("Test1: (Trivial)\n");
r = manager_add_job(m, JOB_START, c, JOB_REPLACE, &err, &j);
if (sd_bus_error_is_set(&err))
log_error("error: %s: %s", err.name, err.message);
assert_se(r == 0);
manager_dump_jobs(m, stdout, "\t");
printf("Load2:\n");
manager_clear_jobs(m);
assert_se(manager_load_unit(m, "d.service", NULL, NULL, &d) >= 0);
assert_se(manager_load_unit(m, "e.service", NULL, NULL, &e) >= 0);
manager_dump_units(m, stdout, "\t");
printf("Test2: (Cyclic Order, Unfixable)\n");
assert_se(manager_add_job(m, JOB_START, d, JOB_REPLACE, NULL, &j) == -EDEADLK);
manager_dump_jobs(m, stdout, "\t");
printf("Test3: (Cyclic Order, Fixable, Garbage Collector)\n");
assert_se(manager_add_job(m, JOB_START, e, JOB_REPLACE, NULL, &j) == 0);
manager_dump_jobs(m, stdout, "\t");
printf("Test4: (Identical transaction)\n");
assert_se(manager_add_job(m, JOB_START, e, JOB_FAIL, NULL, &j) == 0);
manager_dump_jobs(m, stdout, "\t");
printf("Load3:\n");
assert_se(manager_load_unit(m, "g.service", NULL, NULL, &g) >= 0);
manager_dump_units(m, stdout, "\t");
printf("Test5: (Colliding transaction, fail)\n");
assert_se(manager_add_job(m, JOB_START, g, JOB_FAIL, NULL, &j) == -EDEADLK);
printf("Test6: (Colliding transaction, replace)\n");
assert_se(manager_add_job(m, JOB_START, g, JOB_REPLACE, NULL, &j) == 0);
manager_dump_jobs(m, stdout, "\t");
printf("Test7: (Unmergeable job type, fail)\n");
assert_se(manager_add_job(m, JOB_STOP, g, JOB_FAIL, NULL, &j) == -EDEADLK);
printf("Test8: (Mergeable job type, fail)\n");
assert_se(manager_add_job(m, JOB_RESTART, g, JOB_FAIL, NULL, &j) == 0);
manager_dump_jobs(m, stdout, "\t");
printf("Test9: (Unmergeable job type, replace)\n");
assert_se(manager_add_job(m, JOB_STOP, g, JOB_REPLACE, NULL, &j) == 0);
manager_dump_jobs(m, stdout, "\t");
printf("Load4:\n");
assert_se(manager_load_unit(m, "h.service", NULL, NULL, &h) >= 0);
manager_dump_units(m, stdout, "\t");
printf("Test10: (Unmergeable job type of auxiliary job, fail)\n");
assert_se(manager_add_job(m, JOB_START, h, JOB_FAIL, NULL, &j) == 0);
manager_dump_jobs(m, stdout, "\t");
manager_free(m);
return 0;
}
