1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
4 This file is part of systemd.
6 Copyright 2014 Zbigniew Jędrzejewski-Szmek
8 systemd is free software; you can redistribute it and/or modify it
9 under the terms of the GNU Lesser General Public License as published by
10 the Free Software Foundation; either version 2.1 of the License, or
11 (at your option) any later version.
13 systemd is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 Lesser General Public License for more details.
18 You should have received a copy of the GNU Lesser General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
31 #include "analyze-verify.h"
33 static int generate_path(char **var, char **filenames) {
36 _cleanup_strv_free_ char **ans = NULL;
39 STRV_FOREACH(filename, filenames) {
42 t = dirname_malloc(*filename);
46 r = strv_consume(&ans, t);
51 assert_se(strv_uniq(ans));
53 r = strv_extend(&ans, "");
57 *var = strv_join(ans, ":");
64 static int verify_socket(Unit *u) {
69 if (u->type != UNIT_SOCKET)
72 /* Cannot run this without the service being around */
74 /* This makes sure instance is created if necessary. */
75 r = socket_instantiate_service(SOCKET(u));
77 log_unit_error(u->id, "Socket %s cannot be started, failed to create instance.",
82 /* This checks both type of sockets */
83 if (UNIT_ISSET(SOCKET(u)->service)) {
86 service = SERVICE(UNIT_DEREF(SOCKET(u)->service));
87 log_unit_debug(u->id, "%s uses %s", u->id, UNIT(service)->id);
89 if (UNIT(service)->load_state != UNIT_LOADED) {
90 log_unit_error(u->id, "Service %s not loaded, %s cannot be started.",
91 UNIT(service)->id, u->id);
99 static int verify_executable(Unit *u, ExecCommand *exec) {
103 if (access(exec->path, X_OK) < 0) {
104 log_unit_error(u->id, "%s: command %s is not executable: %m",
112 static int verify_executables(Unit *u) {
119 exec = u->type == UNIT_SOCKET ? SOCKET(u)->control_command :
120 u->type == UNIT_MOUNT ? MOUNT(u)->control_command :
121 u->type == UNIT_SWAP ? SWAP(u)->control_command : NULL;
122 k = verify_executable(u, exec);
126 if (u->type == UNIT_SERVICE)
127 for (i = 0; i < ELEMENTSOF(SERVICE(u)->exec_command); i++) {
128 k = verify_executable(u, SERVICE(u)->exec_command[i]);
133 if (u->type == UNIT_SOCKET)
134 for (i = 0; i < ELEMENTSOF(SOCKET(u)->exec_command); i++) {
135 k = verify_executable(u, SOCKET(u)->exec_command[i]);
143 static int verify_documentation(Unit *u, bool check_man) {
147 STRV_FOREACH(p, u->documentation) {
148 log_unit_debug(u->id, "%s: found documentation item %s.", u->id, *p);
149 if (check_man && startswith(*p, "man:")) {
150 k = show_man_page(*p + 4, true);
153 log_unit_error(u->id, "%s: can't show %s: %s",
154 u->id, *p, strerror(-r));
156 log_unit_error(u->id, "%s: man %s command failed with code %d",
166 /* Check remote URLs? */
171 static int verify_unit(Unit *u, bool check_man) {
172 _cleanup_bus_error_free_ sd_bus_error err = SD_BUS_ERROR_NULL;
178 if (log_get_max_level() >= LOG_DEBUG)
179 unit_dump(u, stdout, "\t");
181 log_unit_debug(u->id, "Creating %s/start job", u->id);
182 r = manager_add_job(u->manager, JOB_START, u, JOB_REPLACE, false, &err, &j);
183 if (sd_bus_error_is_set(&err))
184 log_unit_error(u->id, "Error: %s: %s",
185 err.name, err.message);
187 log_unit_error(u->id, "Failed to create %s/start: %s",
188 u->id, strerror(-r));
190 k = verify_socket(u);
194 k = verify_executables(u);
198 k = verify_documentation(u, check_man);
205 int verify_units(char **filenames, SystemdRunningAs running_as, bool check_man) {
206 _cleanup_bus_error_free_ sd_bus_error err = SD_BUS_ERROR_NULL;
211 _cleanup_free_ char *var = NULL;
216 Unit *units[strv_length(filenames)];
219 if (strv_isempty(filenames))
223 r = generate_path(&var, filenames);
225 return log_error_errno(r, "Failed to generate unit load path: %m");
227 assert_se(set_unit_path(var) >= 0);
229 r = manager_new(running_as, true, &m);
231 return log_error_errno(r, "Failed to initalize manager: %m");
233 log_debug("Starting manager...");
235 r = manager_startup(m, serial, fdset);
237 log_error_errno(r, "Failed to start manager: %m");
241 manager_clear_jobs(m);
243 log_debug("Loading remaining units from the command line...");
245 STRV_FOREACH(filename, filenames) {
246 char fname[UNIT_NAME_MAX + 2 + 1] = "./";
248 log_debug("Handling %s...", *filename);
250 /* manager_load_unit does not like pure basenames, so prepend
251 * the local directory, but only for valid names. manager_load_unit
252 * will print the error for other ones. */
253 if (!strchr(*filename, '/') && strlen(*filename) <= UNIT_NAME_MAX) {
254 strncat(fname + 2, *filename, UNIT_NAME_MAX);
255 k = manager_load_unit(m, NULL, fname, &err, &units[count]);
257 k = manager_load_unit(m, NULL, *filename, &err, &units[count]);
259 log_error_errno(k, "Failed to load %s: %m", *filename);
266 for (i = 0; i < count; i++) {
267 k = verify_unit(units[i], check_man);