--- /dev/null
+/*-*- 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"
+#include "pager.h"
+#include "analyze-verify.h"
+
+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 verify_documentation(Unit *u, bool check_man) {
+ char **p;
+ int r = 0, k;
+
+ STRV_FOREACH(p, u->documentation) {
+ log_debug_unit(u->id, "%s: found documentation item %s.", u->id, *p);
+ if (check_man && startswith(*p, "man:")) {
+ k = show_man_page(*p + 4, true);
+ if (k != 0) {
+ if (k < 0)
+ log_error_unit(u->id, "%s: can't show %s: %s",
+ u->id, *p, strerror(-r));
+ else {
+ log_error_unit(u->id, "%s: man %s command failed with code %d",
+ u->id, *p + 4, k);
+ k = -ENOEXEC;
+ }
+ if (r == 0)
+ r = k;
+ }
+ }
+ }
+
+ /* Check remote URLs? */
+
+ return r;
+}
+
+static int verify_unit(Unit *u, bool check_man) {
+ _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;
+
+ k = verify_documentation(u, check_man);
+ if (k < 0 && r == 0)
+ r = k;
+
+ return r;
+}
+
+int verify_units(char **filenames, SystemdRunningAs running_as, bool check_man) {
+ _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 = NULL;
+
+ char **filename;
+ int r = 0, k;
+
+ Unit *units[strv_length(filenames)];
+ int i, count = 0;
+
+ if (strv_isempty(filenames))
+ return 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(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) {
+ char fname[UNIT_NAME_MAX + 2 + 1] = "./";
+
+ log_debug("Handling %s...", *filename);
+
+ /* manager_load_unit does not like pure basenames, so prepend
+ * the local directory, but only for valid names. manager_load_unit
+ * will print the error for other ones. */
+ if (!strchr(*filename, '/') && strlen(*filename) <= UNIT_NAME_MAX) {
+ strncat(fname + 2, *filename, UNIT_NAME_MAX);
+ k = manager_load_unit(m, NULL, fname, &err, &units[count]);
+ } else
+ k = manager_load_unit(m, NULL, *filename, &err, &units[count]);
+ if (k < 0) {
+ log_error("Failed to load %s: %s", *filename, strerror(-k));
+ if (r == 0)
+ r = k;
+ } else
+ count ++;
+ }
+
+ for (i = 0; i < count; i++) {
+ k = verify_unit(units[i], check_man);
+ if (k < 0 && r == 0)
+ r = k;
+ }
+
+finish:
+ manager_free(m);
+
+ return r;
+}
~ianmdlvl / elogind.git / blobdiff