2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek#include <sys/mman.h>

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek#include "special.h"

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek#include "bus-kernel.h"

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek#include "bus-internal.h"

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek#include "bus-util.h"

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek#include "service.h"

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek#include "kdbus.h"

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek#include "bus-policy.h"

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek#include "dbus-busname.h"

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek#include "busname.h"

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmekstatic const UnitActiveState state_translation_table[_BUSNAME_STATE_MAX] = {

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek [BUSNAME_DEAD] = UNIT_INACTIVE,

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek [BUSNAME_MAKING] = UNIT_ACTIVATING,

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek [BUSNAME_REGISTERED] = UNIT_ACTIVE,

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek [BUSNAME_LISTENING] = UNIT_ACTIVE,

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek [BUSNAME_RUNNING] = UNIT_ACTIVE,

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek [BUSNAME_SIGTERM] = UNIT_DEACTIVATING,

5e65c93a433447b15180249166f7b3944c3e6156Zbigniew Jędrzejewski-Szmek [BUSNAME_SIGKILL] = UNIT_DEACTIVATING,

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek [BUSNAME_FAILED] = UNIT_FAILED

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek};

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmekstatic int busname_dispatch_io(sd_event_source *source, int fd, uint32_t revents, void *userdata);

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmekstatic int busname_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata);

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmekstatic void busname_init(Unit *u) {

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek BusName *n = BUSNAME(u);

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek assert(u);

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek assert(u->load_state == UNIT_STUB);

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek n->starter_fd = -1;

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek n->accept_fd = true;

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek n->activating = true;

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek n->timeout_usec = u->manager->default_timeout_start_usec;

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek}

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmekstatic void busname_unwatch_control_pid(BusName *n) {

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek assert(n);

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek if (n->control_pid <= 0)

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek return;

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek unit_unwatch_pid(UNIT(n), n->control_pid);

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek n->control_pid = 0;

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek}

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmekstatic void busname_free_policy(BusName *n) {

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek BusNamePolicy *p;

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek assert(n);

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek while ((p = n->policy)) {

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek LIST_REMOVE(policy, n->policy, p);

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek free(p->name);

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek free(p);

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek }

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek}

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmekstatic void busname_close_fd(BusName *n) {

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek assert(n);

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek n->starter_event_source = sd_event_source_unref(n->starter_event_source);

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek n->starter_fd = safe_close(n->starter_fd);

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek}

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmekstatic void busname_done(Unit *u) {

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek BusName *n = BUSNAME(u);

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek assert(n);

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek free(n->name);

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek n->name = NULL;

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek busname_free_policy(n);

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek busname_unwatch_control_pid(n);

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek busname_close_fd(n);

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek unit_ref_unset(&n->service);

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek n->timer_event_source = sd_event_source_unref(n->timer_event_source);

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek}

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmekstatic int busname_arm_timer(BusName *n) {

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek int r;

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek assert(n);

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek if (n->timeout_usec <= 0) {

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek n->timer_event_source = sd_event_source_unref(n->timer_event_source);

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek return 0;

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek }

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek if (n->timer_event_source) {

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek r = sd_event_source_set_time(n->timer_event_source, now(CLOCK_MONOTONIC) + n->timeout_usec);

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek if (r < 0)

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek return r;

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek return sd_event_source_set_enabled(n->timer_event_source, SD_EVENT_ONESHOT);

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek }

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek return sd_event_add_time(

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek UNIT(n)->manager->event,

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek &n->timer_event_source,

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek CLOCK_MONOTONIC,

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek now(CLOCK_MONOTONIC) + n->timeout_usec, 0,

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek busname_dispatch_timer, n);

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek}

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmekstatic int busname_add_default_default_dependencies(BusName *n) {

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek int r;

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek assert(n);

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek r = unit_add_dependency_by_name(UNIT(n), UNIT_BEFORE, SPECIAL_BUSNAMES_TARGET, NULL, true);

fff40a51ccbb02e8dec4ff2ee505bc84f75e445cZbigniew Jędrzejewski-Szmek if (r < 0)

fff40a51ccbb02e8dec4ff2ee505bc84f75e445cZbigniew Jędrzejewski-Szmek return r;

fff40a51ccbb02e8dec4ff2ee505bc84f75e445cZbigniew Jędrzejewski-Szmek

fff40a51ccbb02e8dec4ff2ee505bc84f75e445cZbigniew Jędrzejewski-Szmek if (UNIT(n)->manager->running_as == SYSTEMD_SYSTEM) {

fff40a51ccbb02e8dec4ff2ee505bc84f75e445cZbigniew Jędrzejewski-Szmek r = unit_add_two_dependencies_by_name(UNIT(n), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_SYSINIT_TARGET, NULL, true);

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek if (r < 0)

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek return r;

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek }

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek return unit_add_two_dependencies_by_name(UNIT(n), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, NULL, true);

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek}

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmekstatic int busname_add_extras(BusName *n) {

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek Unit *u = UNIT(n);

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek int r;

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek assert(n);

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek if (!n->name) {

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek n->name = unit_name_to_prefix(u->id);

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek if (!n->name)

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek return -ENOMEM;

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek }

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek if (!u->description) {

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek r = unit_set_description(u, n->name);

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek if (r < 0)

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek return r;

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek }

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek if (n->activating) {

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek if (!UNIT_DEREF(n->service)) {

23ea3dab15181a3966ec45fa2ccbb81e59d2e0a7Zbigniew Jędrzejewski-Szmek Unit *x;

5e65c93a433447b15180249166f7b3944c3e6156Zbigniew Jędrzejewski-Szmek

7fd1b19bc9e9f5574f2877936b8ac267c7706947Harald Hoyer r = unit_load_related_unit(u, ".service", &x);

fff40a51ccbb02e8dec4ff2ee505bc84f75e445cZbigniew Jędrzejewski-Szmek if (r < 0)

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek return r;

7fd1b19bc9e9f5574f2877936b8ac267c7706947Harald Hoyer

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek unit_ref_set(&n->service, x);

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek }

5e65c93a433447b15180249166f7b3944c3e6156Zbigniew Jędrzejewski-Szmek

5e65c93a433447b15180249166f7b3944c3e6156Zbigniew Jędrzejewski-Szmek r = unit_add_two_dependencies(u, UNIT_BEFORE, UNIT_TRIGGERS, UNIT_DEREF(n->service), true);

5e65c93a433447b15180249166f7b3944c3e6156Zbigniew Jędrzejewski-Szmek if (r < 0)

5e65c93a433447b15180249166f7b3944c3e6156Zbigniew Jędrzejewski-Szmek return r;

5e65c93a433447b15180249166f7b3944c3e6156Zbigniew Jędrzejewski-Szmek }

5e65c93a433447b15180249166f7b3944c3e6156Zbigniew Jędrzejewski-Szmek

5e65c93a433447b15180249166f7b3944c3e6156Zbigniew Jędrzejewski-Szmek if (u->default_dependencies) {

5e65c93a433447b15180249166f7b3944c3e6156Zbigniew Jędrzejewski-Szmek r = busname_add_default_default_dependencies(n);

7fd1b19bc9e9f5574f2877936b8ac267c7706947Harald Hoyer if (r < 0)

5e65c93a433447b15180249166f7b3944c3e6156Zbigniew Jędrzejewski-Szmek return r;

5e65c93a433447b15180249166f7b3944c3e6156Zbigniew Jędrzejewski-Szmek }

23ea3dab15181a3966ec45fa2ccbb81e59d2e0a7Zbigniew Jędrzejewski-Szmek

5e65c93a433447b15180249166f7b3944c3e6156Zbigniew Jędrzejewski-Szmek return 0;

5e65c93a433447b15180249166f7b3944c3e6156Zbigniew Jędrzejewski-Szmek}

5e65c93a433447b15180249166f7b3944c3e6156Zbigniew Jędrzejewski-Szmek

5e65c93a433447b15180249166f7b3944c3e6156Zbigniew Jędrzejewski-Szmekstatic int busname_verify(BusName *n) {

5e65c93a433447b15180249166f7b3944c3e6156Zbigniew Jędrzejewski-Szmek char *e;

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

23ea3dab15181a3966ec45fa2ccbb81e59d2e0a7Zbigniew Jędrzejewski-Szmek assert(n);

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek if (UNIT(n)->load_state != UNIT_LOADED)

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek return 0;

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek if (!service_name_is_valid(n->name)) {

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek log_unit_error(UNIT(n)->id, "%s's Name= setting is not a valid service name Refusing.", UNIT(n)->id);

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek return -EINVAL;

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek }

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek e = strappenda(n->name, ".busname");

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek if (!unit_has_name(UNIT(n), e)) {

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek log_unit_error(UNIT(n)->id, "%s's Name= setting doesn't match unit name. Refusing.", UNIT(n)->id);

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek return -EINVAL;

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek }

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek return 0;

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek}

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

23ea3dab15181a3966ec45fa2ccbb81e59d2e0a7Zbigniew Jędrzejewski-Szmekstatic int busname_load(Unit *u) {

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek BusName *n = BUSNAME(u);

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek int r;

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

7fd1b19bc9e9f5574f2877936b8ac267c7706947Harald Hoyer assert(u);

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek assert(u->load_state == UNIT_STUB);

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek r = unit_load_fragment_and_dropin(u);

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek if (r < 0)

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek return r;

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek if (u->load_state == UNIT_LOADED) {

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek /* This is a new unit? Then let's add in some extras */

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek r = busname_add_extras(n);

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek if (r < 0)

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek return r;

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek }

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek return busname_verify(n);

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek}

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmekstatic void busname_dump(Unit *u, FILE *f, const char *prefix) {

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek BusName *n = BUSNAME(u);

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek assert(n);

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek assert(f);

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek fprintf(f,

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek "%sBus Name State: %s\n"

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek "%sResult: %s\n"

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek "%sName: %s\n"

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek "%sActivating: %s\n"

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek "%sAccept FD: %s\n",

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek prefix, busname_state_to_string(n->state),

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek prefix, busname_result_to_string(n->result),

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek prefix, n->name,

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek prefix, yes_no(n->activating),

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek prefix, yes_no(n->accept_fd));

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek if (n->control_pid > 0)

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek fprintf(f,

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek "%sControl PID: "PID_FMT"\n",

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek prefix, n->control_pid);

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek}

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmekstatic void busname_unwatch_fd(BusName *n) {

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek int r;

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek assert(n);

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek if (!n->starter_event_source)

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek return;

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek r = sd_event_source_set_enabled(n->starter_event_source, SD_EVENT_OFF);

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek if (r < 0)

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek log_unit_debug(UNIT(n)->id, "Failed to disable event source.");

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek}

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmekstatic int busname_watch_fd(BusName *n) {

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek int r;

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek assert(n);

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek if (n->starter_fd < 0)

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek return 0;

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek if (n->starter_event_source)

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek r = sd_event_source_set_enabled(n->starter_event_source, SD_EVENT_ON);

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek else

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek r = sd_event_add_io(UNIT(n)->manager->event, &n->starter_event_source, n->starter_fd, EPOLLIN, busname_dispatch_io, n);

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek if (r < 0) {

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek log_unit_warning_errno(UNIT(n)->id, r, "Failed to watch starter fd: %m");

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek busname_unwatch_fd(n);

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek return r;

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek }

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

e9c1ea9de87d4d508ac38ce87a2fa56e7529a91aJason St. John return 0;

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek}

e9c1ea9de87d4d508ac38ce87a2fa56e7529a91aJason St. John

e9c1ea9de87d4d508ac38ce87a2fa56e7529a91aJason St. Johnstatic int busname_open_fd(BusName *n) {

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek _cleanup_free_ char *path = NULL;

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek const char *mode;

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek assert(n);

e9c1ea9de87d4d508ac38ce87a2fa56e7529a91aJason St. John

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek if (n->starter_fd >= 0)

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek return 0;

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek mode = UNIT(n)->manager->running_as == SYSTEMD_SYSTEM ? "system" : "user";

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek n->starter_fd = bus_kernel_open_bus_fd(mode, &path);

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek if (n->starter_fd < 0)

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek return log_unit_warning_errno(UNIT(n)->id, n->starter_fd, "Failed to open %s: %m", path ?: "kdbus");

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek return 0;

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek}

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmekstatic void busname_set_state(BusName *n, BusNameState state) {

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek BusNameState old_state;

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek assert(n);

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek old_state = n->state;

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek n->state = state;

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek if (!IN_SET(state, BUSNAME_MAKING, BUSNAME_SIGTERM, BUSNAME_SIGKILL)) {

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek n->timer_event_source = sd_event_source_unref(n->timer_event_source);

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek busname_unwatch_control_pid(n);

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek }

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek if (state != BUSNAME_LISTENING)

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek busname_unwatch_fd(n);

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek if (!IN_SET(state, BUSNAME_LISTENING, BUSNAME_MAKING, BUSNAME_REGISTERED, BUSNAME_RUNNING))

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek busname_close_fd(n);

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek if (state != old_state)

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek log_unit_debug(UNIT(n)->id, "%s changed %s -> %s",

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek UNIT(n)->id, busname_state_to_string(old_state), busname_state_to_string(state));

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek unit_notify(UNIT(n), state_translation_table[old_state], state_translation_table[state], true);

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek}

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

5e65c93a433447b15180249166f7b3944c3e6156Zbigniew Jędrzejewski-Szmekstatic int busname_coldplug(Unit *u) {

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek BusName *n = BUSNAME(u);

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek int r;

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek assert(n);

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek assert(n->state == BUSNAME_DEAD);

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek if (n->deserialized_state == n->state)

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek return 0;

5e65c93a433447b15180249166f7b3944c3e6156Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek if (IN_SET(n->deserialized_state, BUSNAME_MAKING, BUSNAME_SIGTERM, BUSNAME_SIGKILL)) {

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek if (n->control_pid <= 0)

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek return -EBADMSG;

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek r = unit_watch_pid(UNIT(n), n->control_pid);

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek if (r < 0)

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek return r;

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek r = busname_arm_timer(n);

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek if (r < 0)

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek return r;

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek }

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek if (IN_SET(n->deserialized_state, BUSNAME_MAKING, BUSNAME_LISTENING, BUSNAME_REGISTERED, BUSNAME_RUNNING)) {

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek r = busname_open_fd(n);

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek if (r < 0)

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek return r;

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek }

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek if (n->deserialized_state == BUSNAME_LISTENING) {

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek r = busname_watch_fd(n);

5e65c93a433447b15180249166f7b3944c3e6156Zbigniew Jędrzejewski-Szmek if (r < 0)

5e65c93a433447b15180249166f7b3944c3e6156Zbigniew Jędrzejewski-Szmek return r;

5e65c93a433447b15180249166f7b3944c3e6156Zbigniew Jędrzejewski-Szmek }

5e65c93a433447b15180249166f7b3944c3e6156Zbigniew Jędrzejewski-Szmek

5e65c93a433447b15180249166f7b3944c3e6156Zbigniew Jędrzejewski-Szmek busname_set_state(n, n->deserialized_state);

5e65c93a433447b15180249166f7b3944c3e6156Zbigniew Jędrzejewski-Szmek return 0;

5e65c93a433447b15180249166f7b3944c3e6156Zbigniew Jędrzejewski-Szmek}

5e65c93a433447b15180249166f7b3944c3e6156Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmekstatic int busname_make_starter(BusName *n, pid_t *_pid) {

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek pid_t pid;

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek int r;

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek r = busname_arm_timer(n);

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek if (r < 0)

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek goto fail;

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek /* We have to resolve the user/group names out-of-process,

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek pid = fork();

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek if (pid < 0)

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek return -errno;

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek if (pid == 0) {

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek int ret;

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek default_signals(SIGNALS_CRASH_HANDLER, SIGNALS_IGNORE, -1);

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek ignore_signals(SIGPIPE, -1);

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek log_forget_fds();

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek r = bus_kernel_make_starter(n->starter_fd, n->name, n->activating, n->accept_fd, n->policy, n->policy_world);

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek if (r < 0) {

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek ret = EXIT_MAKE_STARTER;

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek goto fail_child;

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek }

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek _exit(0);

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek fail_child:

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek log_open();

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek log_error_errno(r, "Failed to create starter connection at step %s: %m", exit_status_to_string(ret, EXIT_STATUS_SYSTEMD));

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek _exit(ret);

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek }

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek r = unit_watch_pid(UNIT(n), pid);

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek if (r < 0)

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek goto fail;

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek *_pid = pid;

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek return 0;

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmekfail:

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek n->timer_event_source = sd_event_source_unref(n->timer_event_source);

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek return r;

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek}

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmekstatic void busname_enter_dead(BusName *n, BusNameResult f) {

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek assert(n);

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek if (f != BUSNAME_SUCCESS)

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek n->result = f;

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek busname_set_state(n, n->result != BUSNAME_SUCCESS ? BUSNAME_FAILED : BUSNAME_DEAD);

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek}

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmekstatic void busname_enter_signal(BusName *n, BusNameState state, BusNameResult f) {

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek KillContext kill_context = {};

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek int r;

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek assert(n);

2ca0435be9359bde3020eeb528c2a6d72ac1e0b0Zbigniew Jędrzejewski-Szmek

if (f != BUSNAME_SUCCESS)

n->result = f;

kill_context_init(&kill_context);

r = unit_kill_context(UNIT(n),

&kill_context,

state != BUSNAME_SIGTERM ? KILL_KILL : KILL_TERMINATE,

-1,

n->control_pid,

false);

if (r < 0) {

log_unit_warning_errno(UNIT(n)->id, r, "%s failed to kill control process: %m", UNIT(n)->id);

goto fail;

}

if (r > 0) {

r = busname_arm_timer(n);

if (r < 0) {

log_unit_warning_errno(UNIT(n)->id, r, "%s failed to arm timer: %m", UNIT(n)->id);

goto fail;

}

busname_set_state(n, state);

} else if (state == BUSNAME_SIGTERM)

busname_enter_signal(n, BUSNAME_SIGKILL, BUSNAME_SUCCESS);

else

busname_enter_dead(n, BUSNAME_SUCCESS);

return;

fail:

busname_enter_dead(n, BUSNAME_FAILURE_RESOURCES);

}

static void busname_enter_listening(BusName *n) {

int r;

assert(n);

if (n->activating) {

r = busname_watch_fd(n);

if (r < 0) {

log_unit_warning_errno(UNIT(n)->id, r, "%s failed to watch names: %m", UNIT(n)->id);

goto fail;

}

busname_set_state(n, BUSNAME_LISTENING);

} else

busname_set_state(n, BUSNAME_REGISTERED);

return;

fail:

busname_enter_signal(n, BUSNAME_SIGTERM, BUSNAME_FAILURE_RESOURCES);

}

static void busname_enter_making(BusName *n) {

int r;

assert(n);

r = busname_open_fd(n);

if (r < 0)

goto fail;

if (n->policy) {

/* If there is a policy, we need to resolve user/group

busname_unwatch_control_pid(n);

r = busname_make_starter(n, &n->control_pid);

if (r < 0) {

log_unit_warning_errno(UNIT(n)->id, r, "%s failed to fork 'making' task: %m", UNIT(n)->id);

goto fail;

}

busname_set_state(n, BUSNAME_MAKING);

} else {

/* If there is no policy, we can do everything

r = bus_kernel_make_starter(n->starter_fd, n->name, n->activating, n->accept_fd, NULL, n->policy_world);

if (r < 0) {

log_unit_warning_errno(UNIT(n)->id, r, "%s failed to make starter: %m", UNIT(n)->id);

goto fail;

}

busname_enter_listening(n);

}

return;

fail:

busname_enter_dead(n, BUSNAME_FAILURE_RESOURCES);

}

static void busname_enter_running(BusName *n) {

_cleanup_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 conenctions anymore if we are supposed to

if (unit_stop_pending(UNIT(n))) {

log_unit_debug(UNIT(n)->id, "Suppressing activation request on %s since unit stop is scheduled.", UNIT(n)->id);

/* 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

SET_FOREACH(other, UNIT(n)->dependencies[UNIT_TRIGGERS], i)

if (unit_active_or_pending(other)) {

pending = true;

break;

}

if (!pending) {

r = manager_add_job(UNIT(n)->manager, JOB_START, UNIT_DEREF(n->service), JOB_REPLACE, true, &error, NULL);

if (r < 0)

goto fail;

}

busname_set_state(n, BUSNAME_RUNNING);

return;

fail:

log_unit_warning(UNIT(n)->id, "%s failed to queue service startup job: %s", UNIT(n)->id, bus_error_message(&error, r));

busname_enter_dead(n, BUSNAME_FAILURE_RESOURCES);

}

static int busname_start(Unit *u) {

BusName *n = BUSNAME(u);

assert(n);

/* We cannot fulfill this request right now, try again later

if (IN_SET(n->state, BUSNAME_SIGTERM, BUSNAME_SIGKILL))

return -EAGAIN;

/* Already on it! */

if (n->state == BUSNAME_MAKING)

return 0;

if (n->activating && UNIT_ISSET(n->service)) {

Service *service;

service = SERVICE(UNIT_DEREF(n->service));

if (UNIT(service)->load_state != UNIT_LOADED) {

log_unit_error(u->id, "Bus service %s not loaded, refusing.", UNIT(service)->id);

return -ENOENT;

}

}

assert(IN_SET(n->state, BUSNAME_DEAD, BUSNAME_FAILED));

n->result = BUSNAME_SUCCESS;

busname_enter_making(n);

return 1;

}

static int busname_stop(Unit *u) {

BusName *n = BUSNAME(u);

assert(n);

/* Already on it */

if (IN_SET(n->state, BUSNAME_SIGTERM, BUSNAME_SIGKILL))

return 0;

/* If there's already something running, we go directly into

if (n->state == BUSNAME_MAKING) {

busname_enter_signal(n, BUSNAME_SIGTERM, BUSNAME_SUCCESS);

return -EAGAIN;

}

assert(IN_SET(n->state, BUSNAME_REGISTERED, BUSNAME_LISTENING, BUSNAME_RUNNING));

busname_enter_dead(n, BUSNAME_SUCCESS);

return 1;

}

static int busname_serialize(Unit *u, FILE *f, FDSet *fds) {

BusName *n = BUSNAME(u);

assert(n);

assert(f);

assert(fds);

unit_serialize_item(u, f, "state", busname_state_to_string(n->state));

unit_serialize_item(u, f, "result", busname_result_to_string(n->result));

if (n->control_pid > 0)

unit_serialize_item_format(u, f, "control-pid", PID_FMT, n->control_pid);

if (n->starter_fd >= 0) {

int copy;

copy = fdset_put_dup(fds, n->starter_fd);

if (copy < 0)

return copy;

unit_serialize_item_format(u, f, "starter-fd", "%i", copy);

}

return 0;

}

static int busname_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) {

BusName *n = BUSNAME(u);

assert(n);

assert(key);

assert(value);

if (streq(key, "state")) {

BusNameState state;

state = busname_state_from_string(value);

if (state < 0)

log_unit_debug(u->id, "Failed to parse state value %s", value);

else

n->deserialized_state = state;

} else if (streq(key, "result")) {

BusNameResult f;

f = busname_result_from_string(value);

if (f < 0)

log_unit_debug(u->id, "Failed to parse result value %s", value);

else if (f != BUSNAME_SUCCESS)

n->result = f;

} else if (streq(key, "control-pid")) {

pid_t pid;

if (parse_pid(value, &pid) < 0)

log_unit_debug(u->id, "Failed to parse control-pid value %s", value);

else

n->control_pid = pid;

} else if (streq(key, "starter-fd")) {

int fd;

if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))

log_unit_debug(u->id, "Failed to parse starter fd value %s", value);

else {

safe_close(n->starter_fd);

n->starter_fd = fdset_remove(fds, fd);

}

} else

log_unit_debug(u->id, "Unknown serialization key '%s'", key);

return 0;

}

_pure_ static UnitActiveState busname_active_state(Unit *u) {

assert(u);

return state_translation_table[BUSNAME(u)->state];

}

_pure_ static const char *busname_sub_state_to_string(Unit *u) {

assert(u);

return busname_state_to_string(BUSNAME(u)->state);

}

static int busname_peek_message(BusName *n) {

struct kdbus_cmd_recv cmd_recv = {

.size = sizeof(cmd_recv),

.flags = KDBUS_RECV_PEEK,

};

struct kdbus_cmd_free cmd_free = {

.size = sizeof(cmd_free),

};

const char *comm = NULL;

struct kdbus_item *d;

struct kdbus_msg *k;

size_t start, ps, sz, delta;

void *p = NULL;

pid_t pid = 0;

int r;

/* Generate a friendly debug log message about which process

assert(n);

/* Let's shortcut things a bit, if debug logging is turned off

if (log_get_max_level() < LOG_DEBUG)

return 0;

r = ioctl(n->starter_fd, KDBUS_CMD_RECV, &cmd_recv);

if (r < 0) {

if (errno == EINTR || errno == EAGAIN)

return 0;

log_unit_error(UNIT(n)->id, "%s: Failed to query activation message: %m", UNIT(n)->id);

return -errno;

}

/* We map as late as possible, and unmap imemdiately after

ps = page_size();

start = (cmd_recv.msg.offset / ps) * ps;

delta = cmd_recv.msg.offset - start;

sz = PAGE_ALIGN(delta + cmd_recv.msg.msg_size);

p = mmap(NULL, sz, PROT_READ, MAP_SHARED, n->starter_fd, start);

if (p == MAP_FAILED) {

log_unit_error(UNIT(n)->id, "%s: Failed to map activation message: %m", UNIT(n)->id);

r = -errno;

goto finish;

}

k = (struct kdbus_msg *) ((uint8_t *) p + delta);

KDBUS_ITEM_FOREACH(d, k, items) {

switch (d->type) {

case KDBUS_ITEM_PIDS:

pid = d->pids.pid;

break;

case KDBUS_ITEM_PID_COMM:

comm = d->str;

break;

}

}

if (pid > 0)

log_unit_debug(UNIT(n)->id, "%s: Activation triggered by process " PID_FMT " (%s)", UNIT(n)->id, pid, strna(comm));

r = 0;

finish:

if (p)

(void) munmap(p, sz);

cmd_free.offset = cmd_recv.msg.offset;

if (ioctl(n->starter_fd, KDBUS_CMD_FREE, &cmd_free) < 0)

log_unit_warning(UNIT(n)->id, "Failed to free peeked message, ignoring: %m");

return r;

}

static int busname_dispatch_io(sd_event_source *source, int fd, uint32_t revents, void *userdata) {

BusName *n = userdata;

assert(n);

assert(fd >= 0);

if (n->state != BUSNAME_LISTENING)

return 0;

log_unit_debug(UNIT(n)->id, "Activation request on %s", UNIT(n)->id);

if (revents != EPOLLIN) {

log_unit_error(UNIT(n)->id, "%s: Got unexpected poll event (0x%x) on starter fd.",

UNIT(n)->id, revents);

goto fail;

}

busname_peek_message(n);

busname_enter_running(n);

return 0;

fail:

busname_enter_dead(n, BUSNAME_FAILURE_RESOURCES);

return 0;

}

static void busname_sigchld_event(Unit *u, pid_t pid, int code, int status) {

BusName *n = BUSNAME(u);

BusNameResult f;

assert(n);

assert(pid >= 0);

if (pid != n->control_pid)

return;

n->control_pid = 0;

if (is_clean_exit(code, status, NULL))

f = BUSNAME_SUCCESS;

else if (code == CLD_EXITED)

f = BUSNAME_FAILURE_EXIT_CODE;

else if (code == CLD_KILLED)

f = BUSNAME_FAILURE_SIGNAL;

else if (code == CLD_DUMPED)

f = BUSNAME_FAILURE_CORE_DUMP;

else

assert_not_reached("Unknown sigchld code");

log_unit_full(u->id,

f == BUSNAME_SUCCESS ? LOG_DEBUG : LOG_NOTICE,

"%s control process exited, code=%s status=%i",

u->id, sigchld_code_to_string(code), status);

if (f != BUSNAME_SUCCESS)

n->result = f;

switch (n->state) {

case BUSNAME_MAKING:

if (f == BUSNAME_SUCCESS)

busname_enter_listening(n);

else

busname_enter_signal(n, BUSNAME_SIGTERM, f);

break;

case BUSNAME_SIGTERM:

case BUSNAME_SIGKILL:

busname_enter_dead(n, f);

break;

default:

assert_not_reached("Uh, control process died at wrong time.");

}

/* Notify clients about changed exit status */

unit_add_to_dbus_queue(u);

}

static int busname_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata) {

BusName *n = BUSNAME(userdata);

assert(n);

assert(n->timer_event_source == source);

switch (n->state) {

case BUSNAME_MAKING:

log_unit_warning(UNIT(n)->id, "%s making timed out. Terminating.", UNIT(n)->id);

busname_enter_signal(n, BUSNAME_SIGTERM, BUSNAME_FAILURE_TIMEOUT);

break;

case BUSNAME_SIGTERM:

log_unit_warning(UNIT(n)->id, "%s stopping timed out. Killing.", UNIT(n)->id);

busname_enter_signal(n, BUSNAME_SIGKILL, BUSNAME_FAILURE_TIMEOUT);

break;

case BUSNAME_SIGKILL:

log_unit_warning(UNIT(n)->id, "%s still around after SIGKILL. Ignoring.", UNIT(n)->id);

busname_enter_dead(n, BUSNAME_FAILURE_TIMEOUT);

break;

default:

assert_not_reached("Timeout at wrong time.");

}

return 0;

}

static void busname_reset_failed(Unit *u) {

BusName *n = BUSNAME(u);

assert(n);

if (n->state == BUSNAME_FAILED)

busname_set_state(n, BUSNAME_DEAD);

n->result = BUSNAME_SUCCESS;

}

static void busname_trigger_notify(Unit *u, Unit *other) {

BusName *n = BUSNAME(u);

Service *s;

assert(n);

assert(other);

if (!IN_SET(n->state, BUSNAME_RUNNING, BUSNAME_LISTENING))

return;

if (other->load_state != UNIT_LOADED || other->type != UNIT_SERVICE)

return;

s = SERVICE(other);

if (s->state == SERVICE_FAILED && s->result == SERVICE_FAILURE_START_LIMIT)

busname_enter_dead(n, BUSNAME_FAILURE_SERVICE_FAILED_PERMANENT);

else if (IN_SET(s->state,

SERVICE_DEAD, SERVICE_FAILED,

SERVICE_STOP, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL,

SERVICE_STOP_POST, SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL,

SERVICE_AUTO_RESTART))

busname_enter_listening(n);

}

static int busname_kill(Unit *u, KillWho who, int signo, sd_bus_error *error) {

return unit_kill_common(u, who, signo, -1, BUSNAME(u)->control_pid, error);

}

static int busname_get_timeout(Unit *u, uint64_t *timeout) {

BusName *n = BUSNAME(u);

int r;

if (!n->timer_event_source)

return 0;

r = sd_event_source_get_time(n->timer_event_source, timeout);

if (r < 0)

return r;

return 1;

}

static bool busname_supported(Manager *m) {

int supported = -1;

assert(m);

if (supported < 0)

supported = access("/sys/fs/kdbus", F_OK) >= 0;

return supported;

}

static const char* const busname_state_table[_BUSNAME_STATE_MAX] = {

[BUSNAME_DEAD] = "dead",

[BUSNAME_MAKING] = "making",

[BUSNAME_REGISTERED] = "registered",

[BUSNAME_LISTENING] = "listening",

[BUSNAME_RUNNING] = "running",

[BUSNAME_SIGTERM] = "sigterm",

[BUSNAME_SIGKILL] = "sigkill",

[BUSNAME_FAILED] = "failed",

};

DEFINE_STRING_TABLE_LOOKUP(busname_state, BusNameState);

static const char* const busname_result_table[_BUSNAME_RESULT_MAX] = {

[BUSNAME_SUCCESS] = "success",

[BUSNAME_FAILURE_RESOURCES] = "resources",

[BUSNAME_FAILURE_TIMEOUT] = "timeout",

[BUSNAME_FAILURE_EXIT_CODE] = "exit-code",

[BUSNAME_FAILURE_SIGNAL] = "signal",

[BUSNAME_FAILURE_CORE_DUMP] = "core-dump",

[BUSNAME_FAILURE_SERVICE_FAILED_PERMANENT] = "service-failed-permanent",

};

DEFINE_STRING_TABLE_LOOKUP(busname_result, BusNameResult);

const UnitVTable busname_vtable = {

.object_size = sizeof(BusName),

.sections =

"Unit\0"

"BusName\0"

"Install\0",

.private_section = "BusName",

.init = busname_init,

.done = busname_done,

.load = busname_load,

.coldplug = busname_coldplug,

.dump = busname_dump,

.start = busname_start,

.stop = busname_stop,

.kill = busname_kill,

.get_timeout = busname_get_timeout,

.serialize = busname_serialize,

.deserialize_item = busname_deserialize_item,

.active_state = busname_active_state,

.sub_state_to_string = busname_sub_state_to_string,

.sigchld_event = busname_sigchld_event,

.trigger_notify = busname_trigger_notify,

.reset_failed = busname_reset_failed,

.supported = busname_supported,

.bus_interface = "org.freedesktop.systemd1.BusName",

.bus_vtable = bus_busname_vtable,

.status_message_formats = {

.finished_start_job = {

[JOB_DONE] = "Listening on %s.",

[JOB_FAILED] = "Failed to listen on %s.",

[JOB_DEPENDENCY] = "Dependency failed for %s.",

[JOB_TIMEOUT] = "Timed out starting %s.",

},

.finished_stop_job = {

[JOB_DONE] = "Closed %s.",

[JOB_FAILED] = "Failed stopping %s.",

[JOB_TIMEOUT] = "Timed out stopping %s.",

},

},

};