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-rw-r--r--src/systemd-analyze/analyze-verify.c304
1 files changed, 304 insertions, 0 deletions
diff --git a/src/systemd-analyze/analyze-verify.c b/src/systemd-analyze/analyze-verify.c
new file mode 100644
index 0000000000..5fd3ee49eb
--- /dev/null
+++ b/src/systemd-analyze/analyze-verify.c
@@ -0,0 +1,304 @@
+/***
+ 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 "alloc-util.h"
+#include "analyze-verify.h"
+#include "bus-error.h"
+#include "bus-util.h"
+#include "log.h"
+#include "manager.h"
+#include "pager.h"
+#include "path-util.h"
+#include "strv.h"
+#include "unit-name.h"
+
+static int prepare_filename(const char *filename, char **ret) {
+ int r;
+ const char *name;
+ _cleanup_free_ char *abspath = NULL;
+ _cleanup_free_ char *dir = NULL;
+ _cleanup_free_ char *with_instance = NULL;
+ char *c;
+
+ assert(filename);
+ assert(ret);
+
+ r = path_make_absolute_cwd(filename, &abspath);
+ if (r < 0)
+ return r;
+
+ name = basename(abspath);
+ if (!unit_name_is_valid(name, UNIT_NAME_ANY))
+ return -EINVAL;
+
+ if (unit_name_is_valid(name, UNIT_NAME_TEMPLATE)) {
+ r = unit_name_replace_instance(name, "i", &with_instance);
+ if (r < 0)
+ return r;
+ }
+
+ dir = dirname_malloc(abspath);
+ if (!dir)
+ return -ENOMEM;
+
+ if (with_instance)
+ c = path_join(NULL, dir, with_instance);
+ else
+ c = path_join(NULL, dir, name);
+ if (!c)
+ return -ENOMEM;
+
+ *ret = c;
+ return 0;
+}
+
+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_unit_error_errno(u, r, "Socket cannot be started, failed to create instance: %m");
+ return r;
+ }
+
+ /* This checks both type of sockets */
+ if (UNIT_ISSET(SOCKET(u)->service)) {
+ Service *service;
+
+ service = SERVICE(UNIT_DEREF(SOCKET(u)->service));
+ log_unit_debug(u, "Using %s", UNIT(service)->id);
+
+ if (UNIT(service)->load_state != UNIT_LOADED) {
+ log_unit_error(u, "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)
+ return log_unit_error_errno(u, errno, "Command %s is not executable: %m", exec->path);
+
+ 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_unit_debug(u, "Found documentation item: %s", *p);
+
+ if (check_man && startswith(*p, "man:")) {
+ k = show_man_page(*p + 4, true);
+ if (k != 0) {
+ if (k < 0)
+ log_unit_error_errno(u, r, "Can't show %s: %m", *p);
+ else {
+ log_unit_error_errno(u, r, "man %s command failed with code %d", *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_(sd_bus_error_free) sd_bus_error err = SD_BUS_ERROR_NULL;
+ int r, k;
+
+ assert(u);
+
+ if (log_get_max_level() >= LOG_DEBUG)
+ unit_dump(u, stdout, "\t");
+
+ log_unit_debug(u, "Creating %s/start job", u->id);
+ r = manager_add_job(u->manager, JOB_START, u, JOB_REPLACE, &err, NULL);
+ if (r < 0)
+ log_unit_error_errno(u, r, "Failed to create %s/start: %s", u->id, bus_error_message(&err, 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, UnitFileScope scope, bool check_man) {
+ _cleanup_(sd_bus_error_free) sd_bus_error err = SD_BUS_ERROR_NULL;
+ _cleanup_free_ char *var = NULL;
+ Manager *m = NULL;
+ FILE *serial = NULL;
+ FDSet *fdset = 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)
+ return log_error_errno(r, "Failed to generate unit load path: %m");
+
+ assert_se(set_unit_path(var) >= 0);
+
+ r = manager_new(scope, true, &m);
+ if (r < 0)
+ return log_error_errno(r, "Failed to initialize manager: %m");
+
+ log_debug("Starting manager...");
+
+ r = manager_startup(m, serial, fdset);
+ if (r < 0) {
+ log_error_errno(r, "Failed to start manager: %m");
+ goto finish;
+ }
+
+ manager_clear_jobs(m);
+
+ log_debug("Loading remaining units from the command line...");
+
+ STRV_FOREACH(filename, filenames) {
+ _cleanup_free_ char *prepared = NULL;
+
+ log_debug("Handling %s...", *filename);
+
+ k = prepare_filename(*filename, &prepared);
+ if (k < 0) {
+ log_error_errno(k, "Failed to prepare filename %s: %m", *filename);
+ if (r == 0)
+ r = k;
+ continue;
+ }
+
+ k = manager_load_unit(m, NULL, prepared, &err, &units[count]);
+ if (k < 0) {
+ log_error_errno(k, "Failed to load %s: %m", *filename);
+ 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;
+}
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