static void automount_enter_running(Automount *a) { _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; Unit *trigger; struct stat st; int r; assert(a); /* If the user masked our unit in the meantime, fail */ if (UNIT(a)->load_state != UNIT_LOADED) { log_unit_error(UNIT(a), "Suppressing automount event since unit is no longer loaded."); goto fail; } /* We don't take mount requests anymore if we are supposed to * shut down anyway */ if (unit_stop_pending(UNIT(a))) { log_unit_debug(UNIT(a), "Suppressing automount request since unit stop is scheduled."); automount_send_ready(a, a->tokens, -EHOSTDOWN); automount_send_ready(a, a->expire_tokens, -EHOSTDOWN); return; } mkdir_p_label(a->where, a->directory_mode); /* Before we do anything, let's see if somebody is playing games with us? */ if (lstat(a->where, &st) < 0) { log_unit_warning_errno(UNIT(a), errno, "Failed to stat automount point: %m"); goto fail; } /* The mount unit may have been explicitly started before we got the * autofs request. Ack it to unblock anything waiting on the mount point. */ if (!S_ISDIR(st.st_mode) || st.st_dev != a->dev_id) { log_unit_info(UNIT(a), "Automount point already active?"); automount_send_ready(a, a->tokens, 0); return; } trigger = UNIT_TRIGGER(UNIT(a)); if (!trigger) { log_unit_error(UNIT(a), "Unit to trigger vanished."); goto fail; } r = manager_add_job(UNIT(a)->manager, JOB_START, trigger, JOB_REPLACE, &error, NULL); if (r < 0) { log_unit_warning(UNIT(a), "Failed to queue mount startup job: %s", bus_error_message(&error, r)); goto fail; } automount_set_state(a, AUTOMOUNT_RUNNING); return; fail: automount_enter_dead(a, AUTOMOUNT_FAILURE_RESOURCES); }
static void busname_enter_running(BusName *n) { _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; bool pending = false; Unit *other; Iterator i; int r; assert(n); if (!n->activating) return; /* We don't take connections anymore if we are supposed to * shut down anyway */ if (unit_stop_pending(UNIT(n))) { log_unit_debug(UNIT(n), "Suppressing activation request since unit stop is scheduled."); /* Flush all queued activation reqeuest by closing and reopening the connection */ bus_kernel_drop_one(n->starter_fd); busname_enter_listening(n); return; } /* If there's already a start pending don't bother to do * anything */ SET_FOREACH(other, UNIT(n)->dependencies[UNIT_TRIGGERS], i) if (unit_active_or_pending(other)) { pending = true; break; } if (!pending) { if (!UNIT_ISSET(n->service)) { log_unit_error(UNIT(n), "Service to activate vanished, refusing activation."); r = -ENOENT; goto fail; } r = manager_add_job(UNIT(n)->manager, JOB_START, UNIT_DEREF(n->service), JOB_REPLACE, &error, NULL); if (r < 0) goto fail; } busname_set_state(n, BUSNAME_RUNNING); return; fail: log_unit_warning(UNIT(n), "Failed to queue service startup job: %s", bus_error_message(&error, r)); busname_enter_dead(n, BUSNAME_FAILURE_RESOURCES); }
static void automount_enter_runnning(Automount *a) { _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; struct stat st; int r; assert(a); /* We don't take mount requests anymore if we are supposed to * shut down anyway */ if (unit_stop_pending(UNIT(a))) { log_debug_unit(UNIT(a)->id, "Suppressing automount request on %s since unit stop is scheduled.", UNIT(a)->id); automount_send_ready(a, -EHOSTDOWN); return; } mkdir_p_label(a->where, a->directory_mode); /* Before we do anything, let's see if somebody is playing games with us? */ if (lstat(a->where, &st) < 0) { log_warning_unit(UNIT(a)->id, "%s failed to stat automount point: %m", UNIT(a)->id); goto fail; } if (!S_ISDIR(st.st_mode) || st.st_dev != a->dev_id) log_info_unit(UNIT(a)->id, "%s's automount point already active?", UNIT(a)->id); else { r = manager_add_job(UNIT(a)->manager, JOB_START, UNIT_TRIGGER(UNIT(a)), JOB_REPLACE, true, &error, NULL); if (r < 0) { log_warning_unit(UNIT(a)->id, "%s failed to queue mount startup job: %s", UNIT(a)->id, bus_error_message(&error, r)); goto fail; } } automount_set_state(a, AUTOMOUNT_RUNNING); return; fail: automount_enter_dead(a, AUTOMOUNT_FAILURE_RESOURCES); }
static int automount_dispatch_io(sd_event_source *s, int fd, uint32_t events, void *userdata) { _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; union autofs_v5_packet_union packet; Automount *a = AUTOMOUNT(userdata); struct stat st; Unit *trigger; int r; assert(a); assert(fd == a->pipe_fd); if (events != EPOLLIN) { log_unit_error(UNIT(a), "Got invalid poll event %"PRIu32" on pipe (fd=%d)", events, fd); goto fail; } r = loop_read_exact(a->pipe_fd, &packet, sizeof(packet), true); if (r < 0) { log_unit_error_errno(UNIT(a), r, "Invalid read from pipe: %m"); goto fail; } switch (packet.hdr.type) { case autofs_ptype_missing_direct: if (packet.v5_packet.pid > 0) { _cleanup_free_ char *p = NULL; get_process_comm(packet.v5_packet.pid, &p); log_unit_info(UNIT(a), "Got automount request for %s, triggered by %"PRIu32" (%s)", a->where, packet.v5_packet.pid, strna(p)); } else log_unit_debug(UNIT(a), "Got direct mount request on %s", a->where); r = set_ensure_allocated(&a->tokens, NULL); if (r < 0) { log_unit_error(UNIT(a), "Failed to allocate token set."); goto fail; } r = set_put(a->tokens, UINT_TO_PTR(packet.v5_packet.wait_queue_token)); if (r < 0) { log_unit_error_errno(UNIT(a), r, "Failed to remember token: %m"); goto fail; } automount_enter_runnning(a); break; case autofs_ptype_expire_direct: log_unit_debug(UNIT(a), "Got direct umount request on %s", a->where); automount_stop_expire(a); r = set_ensure_allocated(&a->expire_tokens, NULL); if (r < 0) { log_unit_error(UNIT(a), "Failed to allocate token set."); goto fail; } r = set_put(a->expire_tokens, UINT_TO_PTR(packet.v5_packet.wait_queue_token)); if (r < 0) { log_unit_error_errno(UNIT(a), r, "Failed to remember token: %m"); goto fail; } /* Before we do anything, let's see if somebody is playing games with us? */ if (lstat(a->where, &st) < 0) { log_unit_warning_errno(UNIT(a), errno, "Failed to stat automount point: %m"); goto fail; } if (!S_ISDIR(st.st_mode) || st.st_dev == a->dev_id) { log_unit_info(UNIT(a), "Automount point already unmounted?"); automount_send_ready(a, a->expire_tokens, 0); break; } trigger = UNIT_TRIGGER(UNIT(a)); if (!trigger) { log_unit_error(UNIT(a), "Unit to trigger vanished."); goto fail; } r = manager_add_job(UNIT(a)->manager, JOB_STOP, trigger, JOB_REPLACE, &error, NULL); if (r < 0) { log_unit_warning(UNIT(a), "Failed to queue umount startup job: %s", bus_error_message(&error, r)); goto fail; } break; default: log_unit_error(UNIT(a), "Received unknown automount request %i", packet.hdr.type); break; } return 0; fail: automount_enter_dead(a, AUTOMOUNT_FAILURE_RESOURCES); return 0; }
int main(int argc, char *argv[]) { _cleanup_(sd_bus_error_free) sd_bus_error err = SD_BUS_ERROR_NULL; Manager *m = NULL; Unit *a = NULL, *b = NULL, *c = NULL, *d = NULL, *e = NULL, *g = NULL, *h = NULL; FILE *serial = NULL; FDSet *fdset = NULL; Job *j; int r; /* prepare the test */ assert_se(set_unit_path(TEST_DIR) >= 0); r = manager_new(MANAGER_USER, true, &m); if (IN_SET(r, -EPERM, -EACCES, -EADDRINUSE, -EHOSTDOWN, -ENOENT, -ENOEXEC)) { printf("Skipping test: manager_new: %s", strerror(-r)); return EXIT_TEST_SKIP; } assert_se(r >= 0); assert_se(manager_startup(m, serial, fdset) >= 0); printf("Load1:\n"); assert_se(manager_load_unit(m, "a.service", NULL, NULL, &a) >= 0); assert_se(manager_load_unit(m, "b.service", NULL, NULL, &b) >= 0); assert_se(manager_load_unit(m, "c.service", NULL, NULL, &c) >= 0); manager_dump_units(m, stdout, "\t"); printf("Test1: (Trivial)\n"); r = manager_add_job(m, JOB_START, c, JOB_REPLACE, &err, &j); if (sd_bus_error_is_set(&err)) log_error("error: %s: %s", err.name, err.message); assert_se(r == 0); manager_dump_jobs(m, stdout, "\t"); printf("Load2:\n"); manager_clear_jobs(m); assert_se(manager_load_unit(m, "d.service", NULL, NULL, &d) >= 0); assert_se(manager_load_unit(m, "e.service", NULL, NULL, &e) >= 0); manager_dump_units(m, stdout, "\t"); printf("Test2: (Cyclic Order, Unfixable)\n"); assert_se(manager_add_job(m, JOB_START, d, JOB_REPLACE, NULL, &j) == -EDEADLK); manager_dump_jobs(m, stdout, "\t"); printf("Test3: (Cyclic Order, Fixable, Garbage Collector)\n"); assert_se(manager_add_job(m, JOB_START, e, JOB_REPLACE, NULL, &j) == 0); manager_dump_jobs(m, stdout, "\t"); printf("Test4: (Identical transaction)\n"); assert_se(manager_add_job(m, JOB_START, e, JOB_FAIL, NULL, &j) == 0); manager_dump_jobs(m, stdout, "\t"); printf("Load3:\n"); assert_se(manager_load_unit(m, "g.service", NULL, NULL, &g) >= 0); manager_dump_units(m, stdout, "\t"); printf("Test5: (Colliding transaction, fail)\n"); assert_se(manager_add_job(m, JOB_START, g, JOB_FAIL, NULL, &j) == -EDEADLK); printf("Test6: (Colliding transaction, replace)\n"); assert_se(manager_add_job(m, JOB_START, g, JOB_REPLACE, NULL, &j) == 0); manager_dump_jobs(m, stdout, "\t"); printf("Test7: (Unmergeable job type, fail)\n"); assert_se(manager_add_job(m, JOB_STOP, g, JOB_FAIL, NULL, &j) == -EDEADLK); printf("Test8: (Mergeable job type, fail)\n"); assert_se(manager_add_job(m, JOB_RESTART, g, JOB_FAIL, NULL, &j) == 0); manager_dump_jobs(m, stdout, "\t"); printf("Test9: (Unmergeable job type, replace)\n"); assert_se(manager_add_job(m, JOB_STOP, g, JOB_REPLACE, NULL, &j) == 0); manager_dump_jobs(m, stdout, "\t"); printf("Load4:\n"); assert_se(manager_load_unit(m, "h.service", NULL, NULL, &h) >= 0); manager_dump_units(m, stdout, "\t"); printf("Test10: (Unmergeable job type of auxiliary job, fail)\n"); assert_se(manager_add_job(m, JOB_START, h, JOB_FAIL, NULL, &j) == 0); manager_dump_jobs(m, stdout, "\t"); manager_free(m); return 0; }
int main(int argc, char *argv[]) { Manager *m = NULL; Unit *a = NULL, *b = NULL, *c = NULL, *d = NULL, *e = NULL, *g = NULL, *h = NULL; Job *j; assert_se(set_unit_path("test") >= 0); assert_se(manager_new(MANAGER_SYSTEM, &m) >= 0); printf("Load1:\n"); assert_se(manager_load_unit(m, "a.service", NULL, NULL, &a) >= 0); assert_se(manager_load_unit(m, "b.service", NULL, NULL, &b) >= 0); assert_se(manager_load_unit(m, "c.service", NULL, NULL, &c) >= 0); manager_dump_units(m, stdout, "\t"); printf("Test1: (Trivial)\n"); assert_se(manager_add_job(m, JOB_START, c, JOB_REPLACE, false, NULL, &j) == 0); manager_dump_jobs(m, stdout, "\t"); printf("Load2:\n"); manager_clear_jobs(m); assert_se(manager_load_unit(m, "d.service", NULL, NULL, &d) >= 0); assert_se(manager_load_unit(m, "e.service", NULL, NULL, &e) >= 0); manager_dump_units(m, stdout, "\t"); printf("Test2: (Cyclic Order, Unfixable)\n"); assert_se(manager_add_job(m, JOB_START, d, JOB_REPLACE, false, NULL, &j) == -ENOEXEC); manager_dump_jobs(m, stdout, "\t"); printf("Test3: (Cyclic Order, Fixable, Garbage Collector)\n"); assert_se(manager_add_job(m, JOB_START, e, JOB_REPLACE, false, NULL, &j) == 0); manager_dump_jobs(m, stdout, "\t"); printf("Test4: (Identical transaction)\n"); assert_se(manager_add_job(m, JOB_START, e, JOB_FAIL, false, NULL, &j) == 0); manager_dump_jobs(m, stdout, "\t"); printf("Load3:\n"); assert_se(manager_load_unit(m, "g.service", NULL, NULL, &g) >= 0); manager_dump_units(m, stdout, "\t"); printf("Test5: (Colliding transaction, fail)\n"); assert_se(manager_add_job(m, JOB_START, g, JOB_FAIL, false, NULL, &j) == -EEXIST); printf("Test6: (Colliding transaction, replace)\n"); assert_se(manager_add_job(m, JOB_START, g, JOB_REPLACE, false, NULL, &j) == 0); manager_dump_jobs(m, stdout, "\t"); printf("Test7: (Unmergeable job type, fail)\n"); assert_se(manager_add_job(m, JOB_STOP, g, JOB_FAIL, false, NULL, &j) == -EEXIST); printf("Test8: (Mergeable job type, fail)\n"); assert_se(manager_add_job(m, JOB_RESTART, g, JOB_FAIL, false, NULL, &j) == 0); manager_dump_jobs(m, stdout, "\t"); printf("Test9: (Unmergeable job type, replace)\n"); assert_se(manager_add_job(m, JOB_STOP, g, JOB_REPLACE, false, NULL, &j) == 0); manager_dump_jobs(m, stdout, "\t"); printf("Load4:\n"); assert_se(manager_load_unit(m, "h.service", NULL, NULL, &h) >= 0); manager_dump_units(m, stdout, "\t"); printf("Test10: (Unmergeable job type of auxiliary job, fail)\n"); assert_se(manager_add_job(m, JOB_START, h, JOB_FAIL, false, NULL, &j) == 0); manager_dump_jobs(m, stdout, "\t"); manager_free(m); return 0; }