+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/***
+ This file is part of systemd.
+
+ Copyright 2014 Zbigniew Jędrzejewski-Szmek
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <stdlib.h>
+#include <getopt.h>
+
+#include "manager.h"
+#include "bus-util.h"
+#include "log.h"
+#include "strv.h"
+#include "build.h"
+
+SystemdRunningAs arg_running_as = SYSTEMD_SYSTEM;
+
+static int generate_path(char **var, char **filenames) {
+ char **filename;
+
+ _cleanup_strv_free_ char **ans = NULL;
+ int r;
+
+ STRV_FOREACH(filename, filenames) {
+ char *t;
+
+ t = dirname_malloc(*filename);
+ if (!t)
+ return -ENOMEM;
+
+ r = strv_consume(&ans, t);
+ if (r < 0)
+ return r;
+ }
+
+ assert_se(strv_uniq(ans));
+
+ r = strv_extend(&ans, "");
+ if (r < 0)
+ return r;
+
+ *var = strv_join(ans, ":");
+ if (!*var)
+ return -ENOMEM;
+
+ return 0;
+}
+
+static int verify_socket(Unit *u) {
+ int r;
+
+ assert(u);
+
+ if (u->type != UNIT_SOCKET)
+ return 0;
+
+ /* Cannot run this without the service being around */
+
+ /* This makes sure instance is created if necessary. */
+ r = socket_instantiate_service(SOCKET(u));
+ if (r < 0) {
+ log_error_unit(u->id, "Socket %s cannot be started, failed to create instance.",
+ u->id);
+ return r;
+ }
+
+ /* This checks both type of sockets */
+ if (UNIT_ISSET(SOCKET(u)->service)) {
+ Service *service;
+
+ service = SERVICE(UNIT_DEREF(SOCKET(u)->service));
+ log_debug_unit(u->id, "%s uses %s", u->id, UNIT(service)->id);
+
+ if (UNIT(service)->load_state != UNIT_LOADED) {
+ log_error_unit(u->id, "Service %s not loaded, %s cannot be started.",
+ UNIT(service)->id, u->id);
+ return -ENOENT;
+ }
+ }
+
+ return 0;
+}
+
+static int verify_executable(Unit *u, ExecCommand *exec) {
+ if (exec == NULL)
+ return 0;
+
+ if (access(exec->path, X_OK) < 0) {
+ log_error_unit(u->id, "%s: command %s is not executable: %m",
+ u->id, exec->path);
+ return -errno;
+ }
+
+ return 0;
+}
+
+static int verify_executables(Unit *u) {
+ ExecCommand *exec;
+ int r = 0, k;
+ unsigned i;
+
+ assert(u);
+
+ exec = u->type == UNIT_SOCKET ? SOCKET(u)->control_command :
+ u->type == UNIT_MOUNT ? MOUNT(u)->control_command :
+ u->type == UNIT_SWAP ? SWAP(u)->control_command : NULL;
+ k = verify_executable(u, exec);
+ if (k < 0 && r == 0)
+ r = k;
+
+ if (u->type == UNIT_SERVICE)
+ for (i = 0; i < ELEMENTSOF(SERVICE(u)->exec_command); i++) {
+ k = verify_executable(u, SERVICE(u)->exec_command[i]);
+ if (k < 0 && r == 0)
+ r = k;
+ }
+
+ if (u->type == UNIT_SOCKET)
+ for (i = 0; i < ELEMENTSOF(SOCKET(u)->exec_command); i++) {
+ k = verify_executable(u, SOCKET(u)->exec_command[i]);
+ if (k < 0 && r == 0)
+ r = k;
+ }
+
+ return r;
+}
+
+static int test_unit(Unit *u) {
+ _cleanup_bus_error_free_ sd_bus_error err = SD_BUS_ERROR_NULL;
+ Job *j;
+ int r, k;
+
+ assert(u);
+
+ if (log_get_max_level() >= LOG_DEBUG)
+ unit_dump(u, stdout, "\t");
+
+ log_debug_unit(u->id, "Creating %s/start job", u->id);
+ r = manager_add_job(u->manager, JOB_START, u, JOB_REPLACE, false, &err, &j);
+ if (sd_bus_error_is_set(&err))
+ log_error_unit(u->id, "Error: %s: %s",
+ err.name, err.message);
+ if (r < 0)
+ log_error_unit(u->id, "Failed to create %s/start: %s",
+ u->id, strerror(-r));
+
+ k = verify_socket(u);
+ if (k < 0 && r == 0)
+ r = k;
+
+ k = verify_executables(u);
+ if (k < 0 && r == 0)
+ r = k;
+
+ return r;
+}
+
+static int test_units(char **filenames) {
+ _cleanup_bus_error_free_ sd_bus_error err = SD_BUS_ERROR_NULL;
+ Manager *m = NULL;
+ FILE *serial = NULL;
+ FDSet *fdset = NULL;
+
+ _cleanup_free_ char *var;
+
+ char **filename;
+ int r = 0, k;
+
+ Unit *units[strv_length(filenames)];
+ int i, count = 0;
+
+ /* set the path */
+ r = generate_path(&var, filenames);
+ if (r < 0) {
+ log_error("Failed to generate unit load path: %s", strerror(-r));
+ return r;
+ }
+
+ assert_se(set_unit_path(var) >= 0);
+
+ r = manager_new(arg_running_as, true, &m);
+ if (r < 0) {
+ log_error("Failed to initalize manager: %s", strerror(-r));
+ return r;
+ }
+
+ log_debug("Starting manager...");
+
+ r = manager_startup(m, serial, fdset);
+ if (r < 0) {
+ log_error("Failed to start manager: %s", strerror(-r));
+ goto finish;
+ }
+
+ manager_clear_jobs(m);
+
+ log_debug("Loading remaining units from the command line...");
+
+ STRV_FOREACH(filename, filenames) {
+ log_debug("Handling %s...", *filename);
+
+ k = manager_load_unit(m, NULL, *filename, &err, &units[count]);
+ if (k < 0) {
+ log_error("Failed to load %s: %s", *filename, strerror(-r));
+ if (r == 0)
+ r = k;
+ }
+
+ count ++;
+ }
+
+ for (i = 0; i < count; i++) {
+ k = test_unit(units[i]);
+ if (k < 0 && r == 0)
+ r = k;
+ }
+
+finish:
+ manager_free(m);
+
+ return r;
+}
+
+static void help(void) {
+ printf("%s [OPTIONS...] {COMMAND} ...\n\n"
+ "Check if unit files can be correctly loaded.\n\n"
+ " -h --help Show this help\n"
+ " --version Show package version\n"
+ " --system Connect to system manager\n"
+ " --user Connect to user service manager\n",
+ program_invocation_short_name);
+}
+
+static int parse_argv(int argc, char *argv[]) {
+ enum {
+ ARG_VERSION = 0x100,
+ ARG_USER,
+ ARG_SYSTEM,
+ };
+
+ static const struct option options[] = {
+ { "help", no_argument, NULL, 'h' },
+ { "version", no_argument, NULL, ARG_VERSION },
+ { "user", no_argument, NULL, ARG_USER },
+ { "system", no_argument, NULL, ARG_SYSTEM },
+ {}
+ };
+
+ int c;
+
+ assert(argc >= 1);
+ assert(argv);
+
+ opterr = 0;
+
+ while ((c = getopt_long(argc, argv, ":h", options, NULL)) >= 0)
+ switch (c) {
+
+ case 'h':
+ help();
+ return 0;
+
+ case ARG_VERSION:
+ puts(PACKAGE_STRING);
+ puts(SYSTEMD_FEATURES);
+ return 0;
+
+ case ARG_USER:
+ arg_running_as = SYSTEMD_USER;
+ break;
+
+ case ARG_SYSTEM:
+ arg_running_as = SYSTEMD_SYSTEM;
+ break;
+
+ case '?':
+ log_error("Unknown option %s.", argv[optind-1]);
+ return -EINVAL;
+
+ case ':':
+ log_error("Missing argument to %s.", argv[optind-1]);
+ return -EINVAL;
+
+ default:
+ assert_not_reached("Unhandled option code.");
+ }
+
+ return 1; /* work to do */
+}
+
+int main(int argc, char *argv[]) {
+ int r;
+
+ log_parse_environment();
+ log_open();
+
+ r = parse_argv(argc, argv);
+ if (r <= 0)
+ goto finish;
+
+ r = test_units(argv + optind);
+
+finish:
+ return r >= 0 ? EXIT_SUCCESS : EXIT_FAILURE;
+}
~ianmdlvl / elogind.git / commitdiff