#include "fd-util.h"
#include "format-util.h"
#include "fs-util.h"
-#include "libudev-private.h"
#include "logind.h"
+#include "main-func.h"
#include "parse-util.h"
#include "process-util.h"
#include "selinux-util.h"
#include "signal-util.h"
#include "strv.h"
+#include "terminal-util.h"
+#include "udev-util.h"
static Manager* manager_unref(Manager *m);
DEFINE_TRIVIAL_CLEANUP_FUNC(Manager*, manager_unref);
m->devices = hashmap_new(&string_hash_ops);
m->seats = hashmap_new(&string_hash_ops);
m->sessions = hashmap_new(&string_hash_ops);
+ m->sessions_by_leader = hashmap_new(NULL);
m->users = hashmap_new(NULL);
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);
- if (!m->devices || !m->seats || !m->sessions || !m->users || !m->inhibitors || !m->buttons || !m->user_units || !m->session_units)
+ if (!m->devices || !m->seats || !m->sessions || !m->sessions_by_leader || !m->users || !m->inhibitors || !m->buttons || !m->user_units || !m->session_units)
return -ENOMEM;
r = sd_event_default(&m->event);
hashmap_free(m->devices);
hashmap_free(m->seats);
hashmap_free(m->sessions);
+ hashmap_free(m->sessions_by_leader);
hashmap_free(m->users);
hashmap_free(m->inhibitors);
hashmap_free(m->buttons);
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);
- sd_event_source_unref(m->udev_device_event_source);
- sd_event_source_unref(m->udev_vcsa_event_source);
- sd_event_source_unref(m->udev_button_event_source);
sd_event_source_unref(m->lid_switch_ignore_event_source);
+#if ENABLE_UTMP
+ sd_event_source_unref(m->utmp_event_source);
+#endif
+
safe_close(m->console_active_fd);
- udev_monitor_unref(m->udev_seat_monitor);
- udev_monitor_unref(m->udev_device_monitor);
- udev_monitor_unref(m->udev_vcsa_monitor);
- udev_monitor_unref(m->udev_button_monitor);
+ sd_device_monitor_unref(m->device_seat_monitor);
+ sd_device_monitor_unref(m->device_monitor);
+ sd_device_monitor_unref(m->device_vcsa_monitor);
+ sd_device_monitor_unref(m->device_button_monitor);
if (m->unlink_nologin)
(void) unlink_or_warn("/run/nologin");
bus_verify_polkit_async_registry_free(m->polkit_registry);
- sd_bus_unref(m->bus);
+ sd_bus_flush_close_unref(m->bus);
sd_event_unref(m->event);
safe_close(m->reserve_vt_fd);
static int parse_fdname(const char *fdname, char **session_id, dev_t *dev) {
_cleanup_strv_free_ char **parts = NULL;
_cleanup_free_ char *id = NULL;
- unsigned int major, minor;
+ unsigned major, minor;
int r;
parts = strv_split(fdname, "-");
return 0;
}
-static int manager_attach_fds(Manager *m) {
- _cleanup_strv_free_ char **fdnames = NULL;
- int n, i, fd;
+static int deliver_fd(Manager *m, const char *fdname, int fd) {
+ _cleanup_free_ char *id = NULL;
+ SessionDevice *sd;
+ struct stat st;
+ Session *s;
+ dev_t dev;
+ int r;
- /* Upon restart, PID1 will send us back all fds of session devices
- * that we previously opened. Each file descriptor is associated
- * with a given session. The session ids are passed through FDNAMES. */
+ assert(m);
+ assert(fd >= 0);
- n = sd_listen_fds_with_names(true, &fdnames);
- if (n <= 0)
- return n;
-
- for (i = 0; i < n; i++) {
- _cleanup_free_ char *id = NULL;
- dev_t dev;
- struct stat st;
- SessionDevice *sd;
- Session *s;
- int r;
+ r = parse_fdname(fdname, &id, &dev);
+ if (r < 0)
+ return log_debug_errno(r, "Failed to parse fd name %s: %m", fdname);
- fd = SD_LISTEN_FDS_START + i;
+ s = hashmap_get(m->sessions, id);
+ if (!s)
+ /* If the session doesn't exist anymore, the associated session device attached to this fd
+ * doesn't either. Let's simply close this fd. */
+ return log_debug_errno(SYNTHETIC_ERRNO(ENXIO), "Failed to attach fd for unknown session: %s", id);
- r = parse_fdname(fdnames[i], &id, &dev);
- if (r < 0) {
- log_debug_errno(r, "Failed to parse fd name %s: %m", fdnames[i]);
- close_nointr(fd);
- continue;
- }
+ if (fstat(fd, &st) < 0)
+ /* The device is allowed to go away at a random point, in which case fstat() failing is
+ * expected. */
+ return log_debug_errno(errno, "Failed to stat device fd for session %s: %m", id);
- s = hashmap_get(m->sessions, id);
- if (!s) {
- /* If the session doesn't exist anymore, the associated session
- * device attached to this fd doesn't either. Let's simply close
- * this fd. */
- log_debug("Failed to attach fd for unknown session: %s", id);
- close_nointr(fd);
- continue;
- }
+ if (!S_ISCHR(st.st_mode) || st.st_rdev != dev)
+ return log_debug_errno(SYNTHETIC_ERRNO(ENODEV), "Device fd doesn't point to the expected character device node");
- if (fstat(fd, &st) < 0) {
- /* The device is allowed to go away at a random point, in which
- * case fstat failing is expected. */
- log_debug_errno(errno, "Failed to stat device fd for session %s: %m", id);
- close_nointr(fd);
- continue;
- }
+ sd = hashmap_get(s->devices, &dev);
+ if (!sd)
+ /* Weird, we got an fd for a session device which wasn't recorded in the session state
+ * file... */
+ return log_warning_errno(SYNTHETIC_ERRNO(ENODEV), "Got fd for missing session device [%u:%u] in session %s",
+ major(dev), minor(dev), s->id);
- if (!S_ISCHR(st.st_mode) || st.st_rdev != dev) {
- log_debug("Device fd doesn't point to the expected character device node");
- close_nointr(fd);
- continue;
- }
+ log_debug("Attaching fd to session device [%u:%u] for session %s",
+ major(dev), minor(dev), s->id);
+
+ session_device_attach_fd(sd, fd, s->was_active);
+ return 0;
+}
- sd = hashmap_get(s->devices, &dev);
- if (!sd) {
- /* Weird, we got an fd for a session device which wasn't
- * recorded in the session state file... */
- log_warning("Got fd for missing session device [%u:%u] in session %s",
- major(dev), minor(dev), s->id);
- close_nointr(fd);
+static int manager_attach_fds(Manager *m) {
+ _cleanup_strv_free_ char **fdnames = NULL;
+ int n;
+
+ /* Upon restart, PID1 will send us back all fds of session devices that we previously opened. Each
+ * file descriptor is associated with a given session. The session ids are passed through FDNAMES. */
+
+ n = sd_listen_fds_with_names(true, &fdnames);
+ if (n < 0)
+ return log_warning_errno(n, "Failed to acquire passed fd list: %m");
+ if (n == 0)
+ return 0;
+
+ for (int i = 0; i < n; i++) {
+ int fd = SD_LISTEN_FDS_START + i;
+
+ if (deliver_fd(m, fdnames[i], fd) >= 0)
continue;
- }
- log_debug("Attaching fd to session device [%u:%u] for session %s",
- major(dev), minor(dev), s->id);
+ /* Hmm, we couldn't deliver the fd to any session device object? If so, let's close the fd */
+ safe_close(fd);
- session_device_attach_fd(sd, fd, s->was_active);
+ /* Remove from fdstore as well */
+ (void) sd_notifyf(false,
+ "FDSTOREREMOVE=1\n"
+ "FDNAME=%s", fdnames[i]);
}
return 0;
r = k;
}
- /* We might be restarted and PID1 could have sent us back the
- * session device fds we previously saved. */
- k = manager_attach_fds(m);
- if (k < 0)
- log_warning_errno(k, "Failed to reattach session device fds: %m");
+ /* We might be restarted and PID1 could have sent us back the session device fds we previously
+ * saved. */
+ (void) manager_attach_fds(m);
return r;
}
return r;
}
-static int manager_dispatch_seat_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
- _cleanup_(sd_device_unrefp) sd_device *d = NULL;
+static int manager_dispatch_seat_udev(sd_device_monitor *monitor, sd_device *device, void *userdata) {
Manager *m = userdata;
- int r;
assert(m);
+ assert(device);
- r = udev_monitor_receive_sd_device(m->udev_seat_monitor, &d);
- if (r < 0)
- return r;
-
- manager_process_seat_device(m, d);
+ manager_process_seat_device(m, device);
return 0;
}
-static int manager_dispatch_device_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
- _cleanup_(sd_device_unrefp) sd_device *d = NULL;
+static int manager_dispatch_device_udev(sd_device_monitor *monitor, sd_device *device, void *userdata) {
Manager *m = userdata;
- int r;
assert(m);
+ assert(device);
- r = udev_monitor_receive_sd_device(m->udev_device_monitor, &d);
- if (r < 0)
- return r;
-
- manager_process_seat_device(m, d);
+ manager_process_seat_device(m, device);
return 0;
}
-static int manager_dispatch_vcsa_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
- _cleanup_(sd_device_unrefp) sd_device *d = NULL;
+static int manager_dispatch_vcsa_udev(sd_device_monitor *monitor, sd_device *device, void *userdata) {
Manager *m = userdata;
- const char *name, *action;
- int r;
+ const char *name;
assert(m);
-
- r = udev_monitor_receive_sd_device(m->udev_vcsa_monitor, &d);
- if (r < 0)
- return r;
+ assert(device);
/* Whenever a VCSA device is removed try to reallocate our
* VTs, to make sure our auto VTs never go away. */
- if (sd_device_get_sysname(d, &name) >= 0 &&
+ if (sd_device_get_sysname(device, &name) >= 0 &&
startswith(name, "vcsa") &&
- sd_device_get_property_value(d, "ACTION", &action) >= 0 &&
- streq(action, "remove"))
+ device_for_action(device, DEVICE_ACTION_REMOVE))
seat_preallocate_vts(m->seat0);
return 0;
}
-static int manager_dispatch_button_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
- _cleanup_(sd_device_unrefp) sd_device *d = NULL;
+static int manager_dispatch_button_udev(sd_device_monitor *monitor, sd_device *device, void *userdata) {
Manager *m = userdata;
- int r;
assert(m);
+ assert(device);
- r = udev_monitor_receive_sd_device(m->udev_button_monitor, &d);
- if (r < 0)
- return r;
-
- manager_process_button_device(m, d);
+ manager_process_button_device(m, device);
return 0;
}
active = m->seat0->active;
if (!active || active->vtnr < 1) {
- log_warning("Received VT_PROCESS signal without a registered session on that VT.");
+ _cleanup_close_ int fd = -1;
+ int r;
+
+ /* We are requested to acknowledge the VT-switch signal by the kernel but
+ * there's no registered sessions for the current VT. Normally this
+ * shouldn't happen but something wrong might have happened when we tried
+ * to release the VT. Better be safe than sorry, and try to release the VT
+ * one more time otherwise the user will be locked with the current VT. */
+
+ log_warning("Received VT_PROCESS signal without a registered session, restoring VT.");
+
+ /* At this point we only have the kernel mapping for referring to the
+ * current VT. */
+ fd = open_terminal("/dev/tty0", O_RDWR|O_NOCTTY|O_CLOEXEC|O_NONBLOCK);
+ if (fd < 0) {
+ log_warning_errno(fd, "Failed to open, ignoring: %m");
+ return 0;
+ }
+
+ r = vt_release(fd, true);
+ if (r < 0)
+ log_warning_errno(r, "Failed to release VT, ignoring: %m");
+
return 0;
}
* release events immediately.
*/
- if (SIGRTMIN + 1 > SIGRTMAX) {
- log_error("Not enough real-time signals available: %u-%u", SIGRTMIN, SIGRTMAX);
- return -EINVAL;
- }
+ if (SIGRTMIN + 1 > SIGRTMAX)
+ return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
+ "Not enough real-time signals available: %u-%u",
+ SIGRTMIN, SIGRTMAX);
assert_se(ignore_signals(SIGRTMIN + 1, -1) >= 0);
assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGRTMIN, -1) >= 0);
int r;
assert(m);
- assert(!m->udev_seat_monitor);
- assert(!m->udev_device_monitor);
- assert(!m->udev_vcsa_monitor);
- assert(!m->udev_button_monitor);
+ assert(!m->device_seat_monitor);
+ assert(!m->device_monitor);
+ assert(!m->device_vcsa_monitor);
+ assert(!m->device_button_monitor);
- m->udev_seat_monitor = udev_monitor_new_from_netlink(NULL, "udev");
- if (!m->udev_seat_monitor)
- return -ENOMEM;
+ r = sd_device_monitor_new(&m->device_seat_monitor);
+ if (r < 0)
+ return r;
- r = udev_monitor_filter_add_match_tag(m->udev_seat_monitor, "master-of-seat");
+ r = sd_device_monitor_filter_add_match_tag(m->device_seat_monitor, "master-of-seat");
if (r < 0)
return r;
- r = udev_monitor_enable_receiving(m->udev_seat_monitor);
+ r = sd_device_monitor_attach_event(m->device_seat_monitor, m->event);
if (r < 0)
return r;
- r = sd_event_add_io(m->event, &m->udev_seat_event_source, udev_monitor_get_fd(m->udev_seat_monitor), EPOLLIN, manager_dispatch_seat_udev, m);
+ r = sd_device_monitor_start(m->device_seat_monitor, manager_dispatch_seat_udev, m);
if (r < 0)
return r;
- m->udev_device_monitor = udev_monitor_new_from_netlink(NULL, "udev");
- if (!m->udev_device_monitor)
- return -ENOMEM;
+ (void) sd_event_source_set_description(sd_device_monitor_get_event_source(m->device_seat_monitor), "logind-seat-monitor");
+
+ r = sd_device_monitor_new(&m->device_monitor);
+ if (r < 0)
+ return r;
- r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_device_monitor, "input", NULL);
+ r = sd_device_monitor_filter_add_match_subsystem_devtype(m->device_monitor, "input", NULL);
if (r < 0)
return r;
- r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_device_monitor, "graphics", NULL);
+ r = sd_device_monitor_filter_add_match_subsystem_devtype(m->device_monitor, "graphics", NULL);
if (r < 0)
return r;
- r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_device_monitor, "drm", NULL);
+ r = sd_device_monitor_filter_add_match_subsystem_devtype(m->device_monitor, "drm", NULL);
if (r < 0)
return r;
- r = udev_monitor_enable_receiving(m->udev_device_monitor);
+ r = sd_device_monitor_attach_event(m->device_monitor, m->event);
if (r < 0)
return r;
- r = sd_event_add_io(m->event, &m->udev_device_event_source, udev_monitor_get_fd(m->udev_device_monitor), EPOLLIN, manager_dispatch_device_udev, m);
+ r = sd_device_monitor_start(m->device_monitor, manager_dispatch_device_udev, m);
if (r < 0)
return r;
+ (void) sd_event_source_set_description(sd_device_monitor_get_event_source(m->device_monitor), "logind-device-monitor");
+
/* Don't watch keys if nobody cares */
if (!manager_all_buttons_ignored(m)) {
- m->udev_button_monitor = udev_monitor_new_from_netlink(NULL, "udev");
- if (!m->udev_button_monitor)
- return -ENOMEM;
+ r = sd_device_monitor_new(&m->device_button_monitor);
+ if (r < 0)
+ return r;
- r = udev_monitor_filter_add_match_tag(m->udev_button_monitor, "power-switch");
+ r = sd_device_monitor_filter_add_match_tag(m->device_button_monitor, "power-switch");
if (r < 0)
return r;
- r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_button_monitor, "input", NULL);
+ r = sd_device_monitor_filter_add_match_subsystem_devtype(m->device_button_monitor, "input", NULL);
if (r < 0)
return r;
- r = udev_monitor_enable_receiving(m->udev_button_monitor);
+ r = sd_device_monitor_attach_event(m->device_button_monitor, m->event);
if (r < 0)
return r;
- r = sd_event_add_io(m->event, &m->udev_button_event_source, udev_monitor_get_fd(m->udev_button_monitor), EPOLLIN, manager_dispatch_button_udev, m);
+ r = sd_device_monitor_start(m->device_button_monitor, manager_dispatch_button_udev, m);
if (r < 0)
return r;
+
+ (void) sd_event_source_set_description(sd_device_monitor_get_event_source(m->device_button_monitor), "logind-button-monitor");
}
/* 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(NULL, "udev");
- if (!m->udev_vcsa_monitor)
- return -ENOMEM;
+ r = sd_device_monitor_new(&m->device_vcsa_monitor);
+ if (r < 0)
+ return r;
- r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_vcsa_monitor, "vc", NULL);
+ r = sd_device_monitor_filter_add_match_subsystem_devtype(m->device_vcsa_monitor, "vc", NULL);
if (r < 0)
return r;
- r = udev_monitor_enable_receiving(m->udev_vcsa_monitor);
+ r = sd_device_monitor_attach_event(m->device_vcsa_monitor, m->event);
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);
+ r = sd_device_monitor_start(m->device_vcsa_monitor, manager_dispatch_vcsa_udev, m);
if (r < 0)
return r;
+
+ (void) sd_event_source_set_description(sd_device_monitor_get_event_source(m->device_vcsa_monitor), "logind-vcsa-monitor");
}
return 0;
if (r < 0)
return log_error_errno(r, "Failed to register SIGHUP handler: %m");
+ /* Connect to utmp */
+ manager_connect_utmp(m);
+
/* Connect to console */
r = manager_connect_console(m);
if (r < 0)
/* Reserve the special reserved VT */
manager_reserve_vt(m);
+ /* Read in utmp if it exists */
+ manager_read_utmp(m);
+
/* And start everything */
HASHMAP_FOREACH(seat, m->seats, i)
(void) seat_start(seat);
}
}
-int main(int argc, char *argv[]) {
+static int run(int argc, char *argv[]) {
_cleanup_(manager_unrefp) Manager *m = NULL;
int r;
- log_set_target(LOG_TARGET_AUTO);
log_set_facility(LOG_AUTH);
- log_parse_environment();
- log_open();
+ log_setup_service();
umask(0022);
if (argc != 1) {
log_error("This program takes no arguments.");
- r = -EINVAL;
- goto finish;
+ return -EINVAL;
}
r = mac_selinux_init();
- if (r < 0) {
- log_error_errno(r, "Could not initialize labelling: %m");
- goto finish;
- }
+ if (r < 0)
+ return log_error_errno(r, "Could not initialize labelling: %m");
/* Always create the directories people can create inotify watches in. Note that some applications might check
* for the existence of /run/systemd/seats/ to determine whether logind is available, so please always make
assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGHUP, SIGTERM, SIGINT, -1) >= 0);
r = manager_new(&m);
- if (r < 0) {
- log_error_errno(r, "Failed to allocate manager object: %m");
- goto finish;
- }
+ if (r < 0)
+ return log_error_errno(r, "Failed to allocate manager object: %m");
(void) manager_parse_config_file(m);
r = manager_startup(m);
- if (r < 0) {
- log_error_errno(r, "Failed to fully start up daemon: %m");
- goto finish;
- }
+ if (r < 0)
+ return log_error_errno(r, "Failed to fully start up daemon: %m");
log_debug("systemd-logind running as pid "PID_FMT, getpid_cached());
-
(void) sd_notify(false,
"READY=1\n"
"STATUS=Processing requests...");
r = manager_run(m);
log_debug("systemd-logind stopped as pid "PID_FMT, getpid_cached());
-
(void) sd_notify(false,
"STOPPING=1\n"
"STATUS=Shutting down...");
-finish:
- return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
+ return r;
}
+
+DEFINE_MAIN_FUNCTION(run);
projects / thirdparty / systemd.git / blobdiff