diff options
Diffstat (limited to 'src/login/logind.c')
| -rw-r--r-- | src/login/logind.c | 200 |
1 files changed, 146 insertions, 54 deletions
diff --git a/src/login/logind.c b/src/login/logind.c index cd0b67119..bcc268be8 100644 --- a/src/login/logind.c +++ b/src/login/logind.c @@ -30,11 +30,14 @@ #include "conf-parser.h" #include "bus-util.h" #include "bus-error.h" -#include "udev-util.h" -#include "signal-util.h" #include "logind.h" +#include "udev-util.h" +#include "formats-util.h" +#include "label.h" -Manager *manager_new(void) { +static void manager_free(Manager *m); + +static Manager *manager_new(void) { Manager *m; int r; @@ -43,7 +46,10 @@ Manager *manager_new(void) { return NULL; m->console_active_fd = -1; + m->reserve_vt_fd = -1; + m->n_autovts = 6; + m->reserve_vt = 6; m->remove_ipc = true; m->inhibit_delay_max = 5 * USEC_PER_SEC; m->handle_power_key = HANDLE_POWEROFF; @@ -67,9 +73,13 @@ Manager *manager_new(void) { m->inhibitors = hashmap_new(&string_hash_ops); m->buttons = hashmap_new(&string_hash_ops); + m->user_units = hashmap_new(&string_hash_ops); + m->session_units = hashmap_new(&string_hash_ops); + m->busnames = set_new(&string_hash_ops); - if (!m->devices || !m->seats || !m->sessions || !m->users || !m->inhibitors || !m->buttons || !m->busnames) + if (!m->devices || !m->seats || !m->sessions || !m->users || !m->inhibitors || !m->buttons || !m->busnames || + !m->user_units || !m->session_units) goto fail; m->kill_exclude_users = strv_new("root", NULL); @@ -93,7 +103,7 @@ fail: return NULL; } -void manager_free(Manager *m) { +static void manager_free(Manager *m) { Session *session; User *u; Device *d; @@ -128,9 +138,16 @@ void manager_free(Manager *m) { hashmap_free(m->inhibitors); hashmap_free(m->buttons); + hashmap_free(m->user_units); + hashmap_free(m->session_units); + set_free_free(m->busnames); sd_event_source_unref(m->idle_action_event_source); + sd_event_source_unref(m->inhibit_timeout_source); + sd_event_source_unref(m->scheduled_shutdown_timeout_source); + sd_event_source_unref(m->nologin_timeout_source); + sd_event_source_unref(m->wall_message_timeout_source); sd_event_source_unref(m->console_active_event_source); sd_event_source_unref(m->udev_seat_event_source); @@ -153,14 +170,23 @@ void manager_free(Manager *m) { if (m->udev) udev_unref(m->udev); + if (m->unlink_nologin) + unlink("/run/nologin"); + bus_verify_polkit_async_registry_free(m->polkit_registry); sd_bus_unref(m->bus); sd_event_unref(m->event); + safe_close(m->reserve_vt_fd); + strv_free(m->kill_only_users); strv_free(m->kill_exclude_users); + free(m->scheduled_shutdown_type); + free(m->scheduled_shutdown_tty); + free(m->wall_message); + free(m->action_job); free(m); } @@ -538,31 +564,25 @@ static int manager_dispatch_console(sd_event_source *s, int fd, uint32_t revents return 0; } -static int signal_agent_released(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) { - Manager *m = userdata; - Session *s; - const char *cgroup; - int r; +static int manager_reserve_vt(Manager *m) { + _cleanup_free_ char *p = NULL; - assert(bus); - assert(message); assert(m); - r = sd_bus_message_read(message, "s", &cgroup); - if (r < 0) { - bus_log_parse_error(r); + if (m->reserve_vt <= 0) return 0; - } - s = hashmap_get(m->sessions, cgroup); + if (asprintf(&p, "/dev/tty%u", m->reserve_vt) < 0) + return log_oom(); - if (!s) { - log_warning("Session not found: %s", cgroup); - return 0; - } + m->reserve_vt_fd = open(p, O_RDWR|O_NOCTTY|O_CLOEXEC|O_NONBLOCK); + if (m->reserve_vt_fd < 0) { - session_finalize(s); - session_free(s); + /* Don't complain on VT-less systems */ + if (errno != ENOENT) + log_warning_errno(errno, "Failed to pin reserved VT: %m"); + return -errno; + } return 0; } @@ -582,13 +602,6 @@ static int manager_connect_bus(Manager *m) { if (r < 0) return log_error_errno(r, "Failed to add manager object vtable: %m"); - r = sd_bus_add_match(m->bus, NULL, - "type='signal'," - "interface='org.freedesktop.systemd1.Agent'," - "member='Released'," - "path='/org/freedesktop/systemd1/agent'", - signal_agent_released, m); - r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/login1/seat", "org.freedesktop.login1.Seat", seat_vtable, seat_object_find, m); if (r < 0) return log_error_errno(r, "Failed to add seat object vtable: %m"); @@ -613,6 +626,73 @@ static int manager_connect_bus(Manager *m) { if (r < 0) return log_error_errno(r, "Failed to add user enumerator: %m"); + r = sd_bus_add_match(m->bus, + NULL, + "type='signal'," + "sender='org.freedesktop.DBus'," + "interface='org.freedesktop.DBus'," + "member='NameOwnerChanged'," + "path='/org/freedesktop/DBus'", + match_name_owner_changed, m); + if (r < 0) + return log_error_errno(r, "Failed to add match for NameOwnerChanged: %m"); + + r = sd_bus_add_match(m->bus, + NULL, + "type='signal'," + "sender='org.freedesktop.systemd1'," + "interface='org.freedesktop.systemd1.Manager'," + "member='JobRemoved'," + "path='/org/freedesktop/systemd1'", + match_job_removed, m); + if (r < 0) + return log_error_errno(r, "Failed to add match for JobRemoved: %m"); + + r = sd_bus_add_match(m->bus, + NULL, + "type='signal'," + "sender='org.freedesktop.systemd1'," + "interface='org.freedesktop.systemd1.Manager'," + "member='UnitRemoved'," + "path='/org/freedesktop/systemd1'", + match_unit_removed, m); + if (r < 0) + return log_error_errno(r, "Failed to add match for UnitRemoved: %m"); + + r = sd_bus_add_match(m->bus, + NULL, + "type='signal'," + "sender='org.freedesktop.systemd1'," + "interface='org.freedesktop.DBus.Properties'," + "member='PropertiesChanged'", + match_properties_changed, m); + if (r < 0) + return log_error_errno(r, "Failed to add match for PropertiesChanged: %m"); + + r = sd_bus_add_match(m->bus, + NULL, + "type='signal'," + "sender='org.freedesktop.systemd1'," + "interface='org.freedesktop.systemd1.Manager'," + "member='Reloading'," + "path='/org/freedesktop/systemd1'", + match_reloading, m); + if (r < 0) + return log_error_errno(r, "Failed to add match for Reloading: %m"); + + r = sd_bus_call_method( + m->bus, + "org.freedesktop.systemd1", + "/org/freedesktop/systemd1", + "org.freedesktop.systemd1.Manager", + "Subscribe", + &error, + NULL, NULL); + if (r < 0) { + log_error("Failed to enable subscription: %s", bus_error_message(&error, r)); + return r; + } + r = sd_bus_request_name(m->bus, "org.freedesktop.login1", 0); if (r < 0) return log_error_errno(r, "Failed to register name: %m"); @@ -707,8 +787,13 @@ static int manager_connect_console(Manager *m) { return -EINVAL; } - assert_se(ignore_signals(SIGRTMIN + 1, -1) >= 0); - assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGRTMIN, -1) >= 0); + r = ignore_signals(SIGRTMIN + 1, -1); + if (r < 0) + return log_error_errno(r, "Cannot ignore SIGRTMIN + 1: %m"); + + r = sigprocmask_many(SIG_BLOCK, SIGRTMIN, -1); + if (r < 0) + return log_error_errno(r, "Cannot block SIGRTMIN: %m"); r = sd_event_add_signal(m->event, NULL, SIGRTMIN, manager_vt_switch, m); if (r < 0) @@ -794,10 +879,30 @@ static int manager_connect_udev(Manager *m) { return r; } + /* Don't bother watching VCSA devices, if nobody cares */ + if (m->n_autovts > 0 && m->console_active_fd >= 0) { + + m->udev_vcsa_monitor = udev_monitor_new_from_netlink(m->udev, "udev"); + if (!m->udev_vcsa_monitor) + return -ENOMEM; + + r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_vcsa_monitor, "vc", NULL); + if (r < 0) + return r; + + r = udev_monitor_enable_receiving(m->udev_vcsa_monitor); + if (r < 0) + return r; + + r = sd_event_add_io(m->event, &m->udev_vcsa_event_source, udev_monitor_get_fd(m->udev_vcsa_monitor), EPOLLIN, manager_dispatch_vcsa_udev, m); + if (r < 0) + return r; + } + return 0; } -void manager_gc(Manager *m, bool drop_not_started) { +static void manager_gc(Manager *m, bool drop_not_started) { Seat *seat; Session *session; User *user; @@ -908,7 +1013,7 @@ static int manager_dispatch_idle_action(sd_event_source *s, uint64_t t, void *us return 0; } -int manager_startup(Manager *m) { +static int manager_startup(Manager *m) { int r; Seat *seat; Session *session; @@ -971,6 +1076,9 @@ int manager_startup(Manager *m) { /* Remove stale objects before we start them */ manager_gc(m, false); + /* Reserve the special reserved VT */ + manager_reserve_vt(m); + /* And start everything */ HASHMAP_FOREACH(seat, m->seats, i) seat_start(seat); @@ -992,14 +1100,12 @@ int manager_startup(Manager *m) { return 0; } -int manager_run(Manager *m) { +static int manager_run(Manager *m) { int r; assert(m); for (;;) { - usec_t us = (uint64_t) -1; - r = sd_event_get_state(m->event); if (r < 0) return r; @@ -1008,19 +1114,7 @@ int manager_run(Manager *m) { manager_gc(m, true); - if (manager_dispatch_delayed(m) > 0) - continue; - - if (m->action_what != 0) { - usec_t x, y; - - x = now(CLOCK_MONOTONIC); - y = m->action_timestamp + m->inhibit_delay_max; - - us = x >= y ? 0 : y - x; - } - - r = sd_event_run(m->event, us); + r = sd_event_run(m->event, (uint64_t) -1); if (r < 0) return r; } @@ -1058,11 +1152,9 @@ int main(int argc, char *argv[]) { * existence of /run/systemd/seats/ to determine whether * logind is available, so please always make sure this check * stays in. */ - mkdir_label("/run/systemd", 0755); mkdir_label("/run/systemd/seats", 0755); mkdir_label("/run/systemd/users", 0755); mkdir_label("/run/systemd/sessions", 0755); - mkdir_label("/run/systemd/machines", 0755); m = manager_new(); if (!m) { @@ -1078,7 +1170,7 @@ int main(int argc, char *argv[]) { goto finish; } - log_debug("logind running as pid "PID_FMT, getpid()); + log_debug("systemd-logind running as pid "PID_FMT, getpid()); sd_notify(false, "READY=1\n" @@ -1086,7 +1178,7 @@ int main(int argc, char *argv[]) { r = manager_run(m); - log_debug("logind stopped as pid "PID_FMT, getpid()); + log_debug("systemd-logind stopped as pid "PID_FMT, getpid()); finish: sd_notify(false, |