+
+typedef struct BusWaitForJobs {
+ sd_bus *bus;
+ Set *jobs;
+
+ char *name;
+ char *result;
+
+ sd_bus_slot *slot_job_removed;
+ sd_bus_slot *slot_disconnected;
+} BusWaitForJobs;
+
+static int match_disconnected(sd_bus *bus, sd_bus_message *m, void *userdata, sd_bus_error *error) {
+ assert(bus);
+ assert(m);
+
+ log_error("Warning! D-Bus connection terminated.");
+ sd_bus_close(bus);
+
+ return 0;
+}
+
+static int match_job_removed(sd_bus *bus, sd_bus_message *m, void *userdata, sd_bus_error *error) {
+ const char *path, *unit, *result;
+ BusWaitForJobs *d = userdata;
+ uint32_t id;
+ char *found;
+ int r;
+
+ assert(bus);
+ assert(m);
+ assert(d);
+
+ r = sd_bus_message_read(m, "uoss", &id, &path, &unit, &result);
+ if (r < 0) {
+ bus_log_parse_error(r);
+ return 0;
+ }
+
+ found = set_remove(d->jobs, (char*) path);
+ if (!found)
+ return 0;
+
+ free(found);
+
+ if (!isempty(result))
+ d->result = strdup(result);
+
+ if (!isempty(unit))
+ d->name = strdup(unit);
+
+ return 0;
+}
+
+void bus_wait_for_jobs_free(BusWaitForJobs *d) {
+ if (!d)
+ return;
+
+ set_free_free(d->jobs);
+
+ sd_bus_slot_unref(d->slot_disconnected);
+ sd_bus_slot_unref(d->slot_job_removed);
+
+ sd_bus_unref(d->bus);
+
+ free(d->name);
+ free(d->result);
+
+ free(d);
+}
+
+int bus_wait_for_jobs_new(sd_bus *bus, BusWaitForJobs **ret) {
+ _cleanup_(bus_wait_for_jobs_freep) BusWaitForJobs *d = NULL;
+ int r;
+
+ assert(bus);
+ assert(ret);
+
+ d = new0(BusWaitForJobs, 1);
+ if (!d)
+ return -ENOMEM;
+
+ d->bus = sd_bus_ref(bus);
+
+ r = sd_bus_add_match(
+ bus,
+ &d->slot_job_removed,
+ "type='signal',"
+ "sender='org.freedesktop.systemd1',"
+ "interface='org.freedesktop.systemd1.Manager',"
+ "member='JobRemoved',"
+ "path='/org/freedesktop/systemd1'",
+ match_job_removed, d);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_add_match(
+ bus,
+ &d->slot_disconnected,
+ "type='signal',"
+ "sender='org.freedesktop.DBus.Local',"
+ "interface='org.freedesktop.DBus.Local',"
+ "member='Disconnected'",
+ match_disconnected, d);
+ if (r < 0)
+ return r;
+
+ *ret = d;
+ d = NULL;
+
+ return 0;
+}
+
+static int bus_process_wait(sd_bus *bus) {
+ int r;
+
+ for (;;) {
+ r = sd_bus_process(bus, NULL);
+ if (r < 0)
+ return r;
+ if (r > 0)
+ return 0;
+
+ r = sd_bus_wait(bus, (uint64_t) -1);
+ if (r < 0)
+ return r;
+ }
+}
+
+static int check_wait_response(BusWaitForJobs *d, bool quiet) {
+ int r = 0;
+
+ assert(d->result);
+
+ if (!quiet) {
+ if (streq(d->result, "canceled"))
+ log_error("Job for %s canceled.", strna(d->name));
+ else if (streq(d->result, "timeout"))
+ log_error("Job for %s timed out.", strna(d->name));
+ else if (streq(d->result, "dependency"))
+ log_error("A dependency job for %s failed. See 'journalctl -xe' for details.", strna(d->name));
+ else if (streq(d->result, "invalid"))
+ log_error("Job for %s invalid.", strna(d->name));
+ else if (streq(d->result, "assert"))
+ log_error("Assertion failed on job for %s.", strna(d->name));
+ else if (streq(d->result, "unsupported"))
+ log_error("Operation on or unit type of %s not supported on this system.", strna(d->name));
+ else if (!streq(d->result, "done") && !streq(d->result, "skipped")) {
+ if (d->name) {
+ bool quotes;
+
+ quotes = chars_intersect(d->name, SHELL_NEED_QUOTES);
+
+ log_error("Job for %s failed. See \"systemctl status %s%s%s\" and \"journalctl -xe\" for details.",
+ d->name,
+ quotes ? "'" : "", d->name, quotes ? "'" : "");
+ } else
+ log_error("Job failed. See \"journalctl -xe\" for details.");
+ }
+ }
+
+ if (streq(d->result, "canceled"))
+ r = -ECANCELED;
+ else if (streq(d->result, "timeout"))
+ r = -ETIME;
+ else if (streq(d->result, "dependency"))
+ r = -EIO;
+ else if (streq(d->result, "invalid"))
+ r = -ENOEXEC;
+ else if (streq(d->result, "assert"))
+ r = -EPROTO;
+ else if (streq(d->result, "unsupported"))
+ r = -ENOTSUP;
+ else if (!streq(d->result, "done") && !streq(d->result, "skipped"))
+ r = -EIO;
+
+ return r;
+}
+
+int bus_wait_for_jobs(BusWaitForJobs *d, bool quiet) {
+ int r = 0;
+
+ assert(d);
+
+ while (!set_isempty(d->jobs)) {
+ int q;
+
+ q = bus_process_wait(d->bus);
+ if (q < 0)
+ return log_error_errno(q, "Failed to wait for response: %m");
+
+ if (d->result) {
+ q = check_wait_response(d, quiet);
+ /* Return the first error as it is most likely to be
+ * meaningful. */
+ if (q < 0 && r == 0)
+ r = q;
+
+ log_debug_errno(q, "Got result %s/%m for job %s", strna(d->result), strna(d->name));
+ }
+
+ free(d->name);
+ d->name = NULL;
+
+ free(d->result);
+ d->result = NULL;
+ }
+
+ return r;
+}
+
+int bus_wait_for_jobs_add(BusWaitForJobs *d, const char *path) {
+ int r;
+
+ assert(d);
+
+ r = set_ensure_allocated(&d->jobs, &string_hash_ops);
+ if (r < 0)
+ return r;
+
+ return set_put_strdup(d->jobs, path);
+}
~ianmdlvl / elogind.git / commitdiff