-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
/***
This file is part of systemd.
***/
#include <errno.h>
-#include <pwd.h>
-#include <libudev.h>
#include <fcntl.h>
#include <string.h>
#include <unistd.h>
-#include <sys/epoll.h>
-#include <sys/ioctl.h>
-#include <linux/vt.h>
-#include <systemd/sd-daemon.h>
+#if 0 /// elogind needs the systems udev header
+#include "libudev.h"
+#else
+#include <libudev.h>
+#endif // 0
+#include "sd-daemon.h"
+#include "alloc-util.h"
+#include "bus-error.h"
+#include "bus-util.h"
+#include "conf-parser.h"
+#include "def.h"
+#include "dirent-util.h"
+#include "fd-util.h"
+#include "formats-util.h"
#include "logind.h"
-#include "dbus-common.h"
-#include "dbus-loop.h"
+#include "selinux-util.h"
+#include "signal-util.h"
#include "strv.h"
-#include "conf-parser.h"
+#include "udev-util.h"
+
+/// additional includes elogind needs
+#include "cgroup.h" // From src/core/
+#include "label.h"
+#include "mount-setup.h" // From src/core
+#include "musl_missing.h"
+
+static void manager_free(Manager *m);
+
+static void manager_reset_config(Manager *m) {
-Manager *manager_new(void) {
+#ifdef ENABLE_DEBUG_ELOGIND
+ int dbg_cnt;
+#endif // ENABLE_DEBUG_ELOGIND
+
+#if 0 /// elogind does not support autospawning of vts
+ m->n_autovts = 6;
+ m->reserve_vt = 6;
+#endif // 0
+ m->remove_ipc = true;
+ m->inhibit_delay_max = 5 * USEC_PER_SEC;
+ m->handle_power_key = HANDLE_POWEROFF;
+ m->handle_suspend_key = HANDLE_SUSPEND;
+ m->handle_hibernate_key = HANDLE_HIBERNATE;
+ m->handle_lid_switch = HANDLE_SUSPEND;
+ m->handle_lid_switch_docked = HANDLE_IGNORE;
+ m->power_key_ignore_inhibited = false;
+ m->suspend_key_ignore_inhibited = false;
+ m->hibernate_key_ignore_inhibited = false;
+ m->lid_switch_ignore_inhibited = true;
+
+ m->holdoff_timeout_usec = 30 * USEC_PER_SEC;
+
+ m->idle_action_usec = 30 * USEC_PER_MINUTE;
+ m->idle_action = HANDLE_IGNORE;
+
+ m->runtime_dir_size = physical_memory_scale(10U, 100U); /* 10% */
+ m->user_tasks_max = system_tasks_max_scale(33U, 100U); /* 33% */
+ m->sessions_max = 8192;
+ m->inhibitors_max = 8192;
+
+ m->kill_user_processes = KILL_USER_PROCESSES;
+
+ m->kill_only_users = strv_free(m->kill_only_users);
+ m->kill_exclude_users = strv_free(m->kill_exclude_users);
+
+ /* Set default Sleep config if not already set by logind.conf */
+ if (!m->suspend_state)
+ m->suspend_state = strv_new("mem", "standby", "freeze", NULL);
+ if (!m->hibernate_mode)
+ m->hibernate_mode = strv_new("platform", "shutdown", NULL);
+ if (!m->hibernate_state)
+ m->hibernate_state = strv_new("disk", NULL);
+ if (!m->hybrid_sleep_mode)
+ m->hybrid_sleep_mode = strv_new("suspend", "platform", "shutdown", NULL);
+ if (!m->hybrid_sleep_state)
+ m->hybrid_sleep_state = strv_new("disk", NULL);
+
+#ifdef ENABLE_DEBUG_ELOGIND
+ dbg_cnt = -1;
+ while (m->suspend_mode && m->suspend_mode[++dbg_cnt])
+ log_debug_elogind("suspend_mode[%d] = %s",
+ dbg_cnt, m->suspend_mode[dbg_cnt]);
+ dbg_cnt = -1;
+ while (m->suspend_state[++dbg_cnt])
+ log_debug_elogind("suspend_state[%d] = %s",
+ dbg_cnt, m->suspend_state[dbg_cnt]);
+ dbg_cnt = -1;
+ while (m->hibernate_mode[++dbg_cnt])
+ log_debug_elogind("hibernate_mode[%d] = %s",
+ dbg_cnt, m->hibernate_mode[dbg_cnt]);
+ dbg_cnt = -1;
+ while (m->hibernate_state[++dbg_cnt])
+ log_debug_elogind("hibernate_state[%d] = %s",
+ dbg_cnt, m->hibernate_state[dbg_cnt]);
+ dbg_cnt = -1;
+ while (m->hybrid_sleep_mode[++dbg_cnt])
+ log_debug_elogind("hybrid_sleep_mode[%d] = %s",
+ dbg_cnt, m->hybrid_sleep_mode[dbg_cnt]);
+ dbg_cnt = -1;
+ while (m->hybrid_sleep_state[++dbg_cnt])
+ log_debug_elogind("hybrid_sleep_state[%d] = %s",
+ dbg_cnt, m->hybrid_sleep_state[dbg_cnt]);
+#endif // ENABLE_DEBUG_ELOGIND
+}
+
+static Manager *manager_new(void) {
Manager *m;
+ int r;
m = new0(Manager, 1);
if (!m)
return NULL;
+ m->pin_cgroupfs_fd = -1;
m->console_active_fd = -1;
- m->bus_fd = -1;
- m->udev_seat_fd = -1;
- m->udev_vcsa_fd = -1;
- m->epoll_fd = -1;
- m->n_autovts = 6;
- m->inhibit_delay_max = 5 * USEC_PER_SEC;
+#if 0 /// UNNEEDED by elogind
+ m->reserve_vt_fd = -1;
+#endif // 0
- m->devices = hashmap_new(string_hash_func, string_compare_func);
- m->seats = hashmap_new(string_hash_func, string_compare_func);
- m->sessions = hashmap_new(string_hash_func, string_compare_func);
- m->users = hashmap_new(trivial_hash_func, trivial_compare_func);
- m->inhibitors = hashmap_new(string_hash_func, string_compare_func);
+ m->idle_action_not_before_usec = now(CLOCK_MONOTONIC);
- m->cgroups = hashmap_new(string_hash_func, string_compare_func);
- m->session_fds = hashmap_new(trivial_hash_func, trivial_compare_func);
- m->inhibitor_fds = hashmap_new(trivial_hash_func, trivial_compare_func);
+ m->devices = hashmap_new(&string_hash_ops);
+ m->seats = hashmap_new(&string_hash_ops);
+ m->sessions = hashmap_new(&string_hash_ops);
+ m->users = hashmap_new(NULL);
+ m->inhibitors = hashmap_new(&string_hash_ops);
+ m->buttons = hashmap_new(&string_hash_ops);
- if (!m->devices || !m->seats || !m->sessions || !m->users || !m->inhibitors ||
- !m->cgroups || !m->session_fds || !m->inhibitor_fds) {
- manager_free(m);
- return NULL;
- }
+ m->user_units = hashmap_new(&string_hash_ops);
+ m->session_units = hashmap_new(&string_hash_ops);
- m->reset_controllers = strv_new("cpu", NULL);
- m->kill_exclude_users = strv_new("root", NULL);
- if (!m->reset_controllers || !m->kill_exclude_users) {
- manager_free(m);
- return NULL;
+ m->test_run = false;
+
+ if (!m->devices || !m->seats || !m->sessions || !m->users || !m->inhibitors || !m->buttons || !m->user_units || !m->session_units)
+ goto fail;
+
+ /* If elogind should be its own controller, mount its cgroup */
+ if (streq(SYSTEMD_CGROUP_CONTROLLER, "name=elogind")) {
+ r = mount_setup(true);
+ if (r < 0)
+ goto fail;
}
+ /* Make cgroups */
+ r = manager_setup_cgroup(m);
+ if (r < 0)
+ goto fail;
+
+ m->suspend_mode = NULL;
+ m->suspend_state = NULL;
+ m->hibernate_mode = NULL;
+ m->hibernate_state = NULL;
+ m->hybrid_sleep_mode = NULL;
+ m->hybrid_sleep_state = NULL;
+
m->udev = udev_new();
- if (!m->udev) {
- manager_free(m);
- return NULL;
- }
+ if (!m->udev)
+ goto fail;
- if (cg_get_user_path(&m->cgroup_path) < 0) {
- manager_free(m);
- return NULL;
- }
+ r = sd_event_default(&m->event);
+ if (r < 0)
+ goto fail;
+
+ sd_event_set_watchdog(m->event, true);
+
+ manager_reset_config(m);
return m;
+
+fail:
+ manager_free(m);
+ return NULL;
}
-void manager_free(Manager *m) {
+static void manager_free(Manager *m) {
Session *session;
User *u;
Device *d;
Seat *s;
Inhibitor *i;
+ Button *b;
assert(m);
while ((i = hashmap_first(m->inhibitors)))
inhibitor_free(i);
+ while ((b = hashmap_first(m->buttons)))
+ button_free(b);
+
hashmap_free(m->devices);
hashmap_free(m->seats);
hashmap_free(m->sessions);
hashmap_free(m->users);
hashmap_free(m->inhibitors);
+ hashmap_free(m->buttons);
- hashmap_free(m->cgroups);
- hashmap_free(m->session_fds);
- hashmap_free(m->inhibitor_fds);
-
- if (m->console_active_fd >= 0)
- close_nointr_nofail(m->console_active_fd);
+ hashmap_free(m->user_units);
+ hashmap_free(m->session_units);
- if (m->udev_seat_monitor)
- udev_monitor_unref(m->udev_seat_monitor);
+ 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);
- if (m->udev_vcsa_monitor)
- udev_monitor_unref(m->udev_vcsa_monitor);
+ 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 (m->udev)
- udev_unref(m->udev);
+ safe_close(m->console_active_fd);
- if (m->bus) {
- dbus_connection_flush(m->bus);
- dbus_connection_close(m->bus);
- dbus_connection_unref(m->bus);
- }
-
- if (m->bus_fd >= 0)
- close_nointr_nofail(m->bus_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);
- if (m->epoll_fd >= 0)
- close_nointr_nofail(m->epoll_fd);
+ udev_unref(m->udev);
- strv_free(m->controllers);
- strv_free(m->reset_controllers);
- strv_free(m->kill_only_users);
- strv_free(m->kill_exclude_users);
+ if (m->unlink_nologin)
+ (void) unlink("/run/nologin");
- free(m->cgroup_path);
- free(m);
-}
+ bus_verify_polkit_async_registry_free(m->polkit_registry);
-int manager_add_device(Manager *m, const char *sysfs, Device **_device) {
- Device *d;
+ sd_bus_unref(m->bus);
+ sd_event_unref(m->event);
- assert(m);
- assert(sysfs);
+#if 0 /// elogind does not support autospawning of vts
+ safe_close(m->reserve_vt_fd);
+#endif // 0
- d = hashmap_get(m->devices, sysfs);
- if (d) {
- if (_device)
- *_device = d;
+ manager_shutdown_cgroup(m, true);
- return 0;
- }
+ strv_free(m->kill_only_users);
+ strv_free(m->kill_exclude_users);
- d = device_new(m, sysfs);
- if (!d)
- return -ENOMEM;
+ free(m->scheduled_shutdown_type);
+ free(m->scheduled_shutdown_tty);
+ free(m->wall_message);
- if (_device)
- *_device = d;
+ strv_free(m->suspend_mode);
+ strv_free(m->suspend_state);
+ strv_free(m->hibernate_mode);
+ strv_free(m->hibernate_state);
+ strv_free(m->hybrid_sleep_mode);
+ strv_free(m->hybrid_sleep_state);
- return 0;
+#if 0 /// UNNEEDED by elogind
+ free(m->action_job);
+#endif // 0
+ free(m);
}
-int manager_add_seat(Manager *m, const char *id, Seat **_seat) {
- Seat *s;
+static int manager_enumerate_devices(Manager *m) {
+ struct udev_list_entry *item = NULL, *first = NULL;
+ _cleanup_udev_enumerate_unref_ struct udev_enumerate *e = NULL;
+ int r;
assert(m);
- assert(id);
-
- s = hashmap_get(m->seats, id);
- if (s) {
- if (_seat)
- *_seat = s;
- return 0;
- }
+ /* Loads devices from udev and creates seats for them as
+ * necessary */
- s = seat_new(m, id);
- if (!s)
+ e = udev_enumerate_new(m->udev);
+ if (!e)
return -ENOMEM;
- if (_seat)
- *_seat = s;
+ r = udev_enumerate_add_match_tag(e, "master-of-seat");
+ if (r < 0)
+ return r;
- return 0;
-}
+ r = udev_enumerate_add_match_is_initialized(e);
+ if (r < 0)
+ return r;
-int manager_add_session(Manager *m, User *u, const char *id, Session **_session) {
- Session *s;
+ r = udev_enumerate_scan_devices(e);
+ if (r < 0)
+ return r;
- assert(m);
- assert(id);
+ first = udev_enumerate_get_list_entry(e);
+ udev_list_entry_foreach(item, first) {
+ _cleanup_udev_device_unref_ struct udev_device *d = NULL;
+ int k;
- s = hashmap_get(m->sessions, id);
- if (s) {
- if (_session)
- *_session = s;
+ d = udev_device_new_from_syspath(m->udev, udev_list_entry_get_name(item));
+ if (!d)
+ return -ENOMEM;
- return 0;
+ k = manager_process_seat_device(m, d);
+ if (k < 0)
+ r = k;
}
- s = session_new(m, u, id);
- if (!s)
- return -ENOMEM;
-
- if (_session)
- *_session = s;
-
- return 0;
+ return r;
}
-int manager_add_user(Manager *m, uid_t uid, gid_t gid, const char *name, User **_user) {
- User *u;
+static int manager_enumerate_buttons(Manager *m) {
+ _cleanup_udev_enumerate_unref_ struct udev_enumerate *e = NULL;
+ struct udev_list_entry *item = NULL, *first = NULL;
+ int r;
assert(m);
- assert(name);
- u = hashmap_get(m->users, ULONG_TO_PTR((unsigned long) uid));
- if (u) {
- if (_user)
- *_user = u;
+ /* Loads buttons from udev */
+ if (m->handle_power_key == HANDLE_IGNORE &&
+ m->handle_suspend_key == HANDLE_IGNORE &&
+ m->handle_hibernate_key == HANDLE_IGNORE &&
+ m->handle_lid_switch == HANDLE_IGNORE &&
+ m->handle_lid_switch_docked == HANDLE_IGNORE)
return 0;
- }
- u = user_new(m, uid, gid, name);
- if (!u)
+ e = udev_enumerate_new(m->udev);
+ if (!e)
return -ENOMEM;
- if (_user)
- *_user = u;
-
- return 0;
-}
-
-int manager_add_user_by_name(Manager *m, const char *name, User **_user) {
- uid_t uid;
- gid_t gid;
- int r;
-
- assert(m);
- assert(name);
-
- r = get_user_creds(&name, &uid, &gid, NULL);
+ r = udev_enumerate_add_match_subsystem(e, "input");
if (r < 0)
return r;
- return manager_add_user(m, uid, gid, name, _user);
-}
-
-int manager_add_user_by_uid(Manager *m, uid_t uid, User **_user) {
- struct passwd *p;
-
- assert(m);
-
- errno = 0;
- p = getpwuid(uid);
- if (!p)
- return errno ? -errno : -ENOENT;
-
- return manager_add_user(m, uid, p->pw_gid, p->pw_name, _user);
-}
-
-int manager_add_inhibitor(Manager *m, const char* id, Inhibitor **_inhibitor) {
- Inhibitor *i;
-
- assert(m);
- assert(id);
-
- i = hashmap_get(m->inhibitors, id);
- if (i) {
- if (_inhibitor)
- *_inhibitor = i;
-
- return 0;
- }
-
- i = inhibitor_new(m, id);
- if (!i)
- return -ENOMEM;
-
- if (_inhibitor)
- *_inhibitor = i;
-
- return 0;
-}
-
-int manager_process_seat_device(Manager *m, struct udev_device *d) {
- Device *device;
- int r;
-
- assert(m);
-
- if (streq_ptr(udev_device_get_action(d), "remove")) {
-
- device = hashmap_get(m->devices, udev_device_get_syspath(d));
- if (!device)
- return 0;
-
- seat_add_to_gc_queue(device->seat);
- device_free(device);
-
- } else {
- const char *sn;
- Seat *seat;
-
- sn = udev_device_get_property_value(d, "ID_SEAT");
- if (isempty(sn))
- sn = "seat0";
-
- if (!seat_name_is_valid(sn)) {
- log_warning("Device with invalid seat name %s found, ignoring.", sn);
- return 0;
- }
-
- r = manager_add_device(m, udev_device_get_syspath(d), &device);
- if (r < 0)
- return r;
-
- r = manager_add_seat(m, sn, &seat);
- if (r < 0) {
- if (!device->seat)
- device_free(device);
-
- return r;
- }
-
- device_attach(device, seat);
- seat_start(seat);
- }
-
- return 0;
-}
-
-int manager_enumerate_devices(Manager *m) {
- struct udev_list_entry *item = NULL, *first = NULL;
- struct udev_enumerate *e;
- int r;
-
- assert(m);
-
- /* Loads devices from udev and creates seats for them as
- * necessary */
-
- e = udev_enumerate_new(m->udev);
- if (!e) {
- r = -ENOMEM;
- goto finish;
- }
-
- r = udev_enumerate_add_match_subsystem(e, "graphics");
+ r = udev_enumerate_add_match_tag(e, "power-switch");
if (r < 0)
- goto finish;
+ return r;
- r = udev_enumerate_add_match_tag(e, "seat");
+ r = udev_enumerate_add_match_is_initialized(e);
if (r < 0)
- goto finish;
+ return r;
r = udev_enumerate_scan_devices(e);
if (r < 0)
- goto finish;
+ return r;
first = udev_enumerate_get_list_entry(e);
udev_list_entry_foreach(item, first) {
- struct udev_device *d;
+ _cleanup_udev_device_unref_ struct udev_device *d = NULL;
int k;
d = udev_device_new_from_syspath(m->udev, udev_list_entry_get_name(item));
- if (!d) {
- r = -ENOMEM;
- goto finish;
- }
-
- k = manager_process_seat_device(m, d);
- udev_device_unref(d);
+ if (!d)
+ return -ENOMEM;
+ k = manager_process_button_device(m, d);
if (k < 0)
r = k;
}
-finish:
- if (e)
- udev_enumerate_unref(e);
-
return r;
}
-int manager_enumerate_seats(Manager *m) {
- DIR *d;
+static int manager_enumerate_seats(Manager *m) {
+ _cleanup_closedir_ DIR *d = NULL;
struct dirent *de;
int r = 0;
if (errno == ENOENT)
return 0;
- log_error("Failed to open /run/systemd/seats: %m");
- return -errno;
+ return log_error_errno(errno, "Failed to open /run/systemd/seats: %m");
}
- while ((de = readdir(d))) {
+ FOREACH_DIRENT(de, d, return -errno) {
Seat *s;
int k;
r = k;
}
- closedir(d);
-
- return r;
-}
-
-static int manager_enumerate_users_from_cgroup(Manager *m) {
- int r = 0, k;
- char *name;
- DIR *d;
-
- r = cg_enumerate_subgroups(SYSTEMD_CGROUP_CONTROLLER, m->cgroup_path, &d);
- if (r < 0) {
- if (r == -ENOENT)
- return 0;
-
- log_error("Failed to open %s: %s", m->cgroup_path, strerror(-r));
- return r;
- }
-
- while ((k = cg_read_subgroup(d, &name)) > 0) {
- User *user;
-
- k = manager_add_user_by_name(m, name, &user);
- if (k < 0) {
- free(name);
- r = k;
- continue;
- }
-
- user_add_to_gc_queue(user);
-
- if (!user->cgroup_path)
- if (asprintf(&user->cgroup_path, "%s/%s", m->cgroup_path, name) < 0) {
- r = -ENOMEM;
- free(name);
- break;
- }
-
- free(name);
- }
-
- if (r >= 0 && k < 0)
- r = k;
-
- closedir(d);
-
return r;
}
static int manager_enumerate_linger_users(Manager *m) {
- DIR *d;
+ _cleanup_closedir_ DIR *d = NULL;
struct dirent *de;
int r = 0;
+ assert(m);
+
d = opendir("/var/lib/systemd/linger");
if (!d) {
if (errno == ENOENT)
return 0;
- log_error("Failed to open /var/lib/systemd/linger/: %m");
- return -errno;
+ return log_error_errno(errno, "Failed to open /var/lib/systemd/linger/: %m");
}
- while ((de = readdir(d))) {
+ FOREACH_DIRENT(de, d, return -errno) {
int k;
if (!dirent_is_file(de))
k = manager_add_user_by_name(m, de->d_name, NULL);
if (k < 0) {
- log_notice("Couldn't add lingering user %s: %s", de->d_name, strerror(-k));
+ log_notice_errno(k, "Couldn't add lingering user %s: %m", de->d_name);
r = k;
}
}
- closedir(d);
-
return r;
}
-int manager_enumerate_users(Manager *m) {
- DIR *d;
+static int manager_enumerate_users(Manager *m) {
+ _cleanup_closedir_ DIR *d = NULL;
struct dirent *de;
int r, k;
assert(m);
- /* First, enumerate user cgroups */
- r = manager_enumerate_users_from_cgroup(m);
+ /* Add lingering users */
+ r = manager_enumerate_linger_users(m);
- /* Second, add lingering users on top */
- k = manager_enumerate_linger_users(m);
- if (k < 0)
- r = k;
-
- /* Third, read in user data stored on disk */
+ /* Read in user data stored on disk */
d = opendir("/run/systemd/users");
if (!d) {
if (errno == ENOENT)
return 0;
- log_error("Failed to open /run/systemd/users: %m");
- return -errno;
+ return log_error_errno(errno, "Failed to open /run/systemd/users: %m");
}
- while ((de = readdir(d))) {
- uid_t uid;
+ FOREACH_DIRENT(de, d, return -errno) {
User *u;
if (!dirent_is_file(de))
continue;
- k = parse_uid(de->d_name, &uid);
+ k = manager_add_user_by_name(m, de->d_name, &u);
if (k < 0) {
- log_error("Failed to parse file name %s: %s", de->d_name, strerror(-k));
- continue;
- }
+ log_error_errno(k, "Failed to add user by file name %s: %m", de->d_name);
- u = hashmap_get(m->users, ULONG_TO_PTR(uid));
- if (!u) {
- unlinkat(dirfd(d), de->d_name, 0);
+ r = k;
continue;
}
+ user_add_to_gc_queue(u);
+
k = user_load(u);
if (k < 0)
r = k;
}
- closedir(d);
-
return r;
}
-static int manager_enumerate_sessions_from_cgroup(Manager *m) {
- User *u;
- Iterator i;
+static int manager_enumerate_sessions(Manager *m) {
+ _cleanup_closedir_ DIR *d = NULL;
+ struct dirent *de;
int r = 0;
- HASHMAP_FOREACH(u, m->users, i) {
- DIR *d;
- char *name;
+ assert(m);
+
+ /* Read in session data stored on disk */
+ d = opendir("/run/systemd/sessions");
+ if (!d) {
+ if (errno == ENOENT)
+ return 0;
+
+ return log_error_errno(errno, "Failed to open /run/systemd/sessions: %m");
+ }
+
+ FOREACH_DIRENT(de, d, return -errno) {
+ struct Session *s;
int k;
- if (!u->cgroup_path)
+ if (!dirent_is_file(de))
continue;
- k = cg_enumerate_subgroups(SYSTEMD_CGROUP_CONTROLLER, u->cgroup_path, &d);
- if (k < 0) {
- if (k == -ENOENT)
- continue;
-
- log_error("Failed to open %s: %s", u->cgroup_path, strerror(-k));
- r = k;
+ if (!session_id_valid(de->d_name)) {
+ log_warning("Invalid session file name '%s', ignoring.", de->d_name);
+ r = -EINVAL;
continue;
}
- while ((k = cg_read_subgroup(d, &name)) > 0) {
- Session *session;
-
- if (streq(name, "shared"))
- continue;
-
- k = manager_add_session(m, u, name, &session);
- if (k < 0) {
- free(name);
- break;
- }
-
- session_add_to_gc_queue(session);
-
- if (!session->cgroup_path)
- if (asprintf(&session->cgroup_path, "%s/%s", u->cgroup_path, name) < 0) {
- k = -ENOMEM;
- free(name);
- break;
- }
+ k = manager_add_session(m, de->d_name, &s);
+ if (k < 0) {
+ log_error_errno(k, "Failed to add session by file name %s: %m", de->d_name);
- free(name);
+ r = k;
+ continue;
}
- closedir(d);
+ session_add_to_gc_queue(s);
+ k = session_load(s);
if (k < 0)
r = k;
}
return r;
}
-int manager_enumerate_sessions(Manager *m) {
- DIR *d;
+static int manager_enumerate_inhibitors(Manager *m) {
+ _cleanup_closedir_ DIR *d = NULL;
struct dirent *de;
int r = 0;
assert(m);
- /* First enumerate session cgroups */
- r = manager_enumerate_sessions_from_cgroup(m);
-
- /* Second, read in session data stored on disk */
- d = opendir("/run/systemd/sessions");
+ d = opendir("/run/systemd/inhibit");
if (!d) {
if (errno == ENOENT)
return 0;
- log_error("Failed to open /run/systemd/sessions: %m");
- return -errno;
+ return log_error_errno(errno, "Failed to open /run/systemd/inhibit: %m");
}
- while ((de = readdir(d))) {
- struct Session *s;
+ FOREACH_DIRENT(de, d, return -errno) {
int k;
+ Inhibitor *i;
if (!dirent_is_file(de))
continue;
- s = hashmap_get(m->sessions, de->d_name);
- if (!s) {
- unlinkat(dirfd(d), de->d_name, 0);
+ k = manager_add_inhibitor(m, de->d_name, &i);
+ if (k < 0) {
+ log_notice_errno(k, "Couldn't add inhibitor %s: %m", de->d_name);
+ r = k;
continue;
}
- k = session_load(s);
+ k = inhibitor_load(i);
if (k < 0)
r = k;
}
- closedir(d);
-
return r;
}
-int manager_enumerate_inhibitors(Manager *m) {
- DIR *d;
- struct dirent *de;
- int r = 0;
+static int manager_dispatch_seat_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
+ _cleanup_udev_device_unref_ struct udev_device *d = NULL;
+ Manager *m = userdata;
assert(m);
- d = opendir("/run/systemd/inhibit");
- if (!d) {
- if (errno == ENOENT)
- return 0;
-
- log_error("Failed to open /run/systemd/inhibit: %m");
- return -errno;
- }
-
- while ((de = readdir(d))) {
- int k;
- Inhibitor *i;
-
- if (!dirent_is_file(de))
- continue;
-
- k = manager_add_inhibitor(m, de->d_name, &i);
- if (k < 0) {
- log_notice("Couldn't add inhibitor %s: %s", de->d_name, strerror(-k));
- r = k;
- continue;
- }
-
- k = inhibitor_load(i);
- if (k < 0)
- r = k;
- }
-
- closedir(d);
+ d = udev_monitor_receive_device(m->udev_seat_monitor);
+ if (!d)
+ return -ENOMEM;
- return r;
+ manager_process_seat_device(m, d);
+ return 0;
}
-int manager_dispatch_seat_udev(Manager *m) {
- struct udev_device *d;
- int r;
+static int manager_dispatch_device_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
+ _cleanup_udev_device_unref_ struct udev_device *d = NULL;
+ Manager *m = userdata;
assert(m);
- d = udev_monitor_receive_device(m->udev_seat_monitor);
+ d = udev_monitor_receive_device(m->udev_device_monitor);
if (!d)
return -ENOMEM;
- r = manager_process_seat_device(m, d);
- udev_device_unref(d);
-
- return r;
+ manager_process_seat_device(m, d);
+ return 0;
}
-int manager_dispatch_vcsa_udev(Manager *m) {
- struct udev_device *d;
- int r = 0;
+#if 0 /// UNNEEDED by elogind
+static int manager_dispatch_vcsa_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
+ _cleanup_udev_device_unref_ struct udev_device *d = NULL;
+ Manager *m = userdata;
const char *name;
assert(m);
* VTs, to make sure our auto VTs never go away. */
if (name && startswith(name, "vcsa") && streq_ptr(udev_device_get_action(d), "remove"))
- r = seat_preallocate_vts(m->vtconsole);
-
- udev_device_unref(d);
+ seat_preallocate_vts(m->seat0);
- return r;
+ return 0;
}
+#endif // 0
+
+static int manager_dispatch_button_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
+ _cleanup_udev_device_unref_ struct udev_device *d = NULL;
+ Manager *m = userdata;
-int manager_dispatch_console(Manager *m) {
assert(m);
- if (m->vtconsole)
- seat_read_active_vt(m->vtconsole);
+ d = udev_monitor_receive_device(m->udev_button_monitor);
+ if (!d)
+ return -ENOMEM;
+ manager_process_button_device(m, d);
return 0;
}
-static int vt_is_busy(int vtnr) {
- struct vt_stat vt_stat;
- int r = 0, fd;
-
- assert(vtnr >= 1);
-
- /* We explicitly open /dev/tty1 here instead of /dev/tty0. If
- * we'd open the latter we'd open the foreground tty which
- * hence would be unconditionally busy. By opening /dev/tty1
- * we avoid this. Since tty1 is special and needs to be an
- * explicitly loaded getty or DM this is safe. */
-
- fd = open_terminal("/dev/tty1", O_RDWR|O_NOCTTY|O_CLOEXEC);
- if (fd < 0)
- return -errno;
-
- if (ioctl(fd, VT_GETSTATE, &vt_stat) < 0)
- r = -errno;
- else
- r = !!(vt_stat.v_state & (1 << vtnr));
+static int manager_dispatch_console(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
+ Manager *m = userdata;
- close_nointr_nofail(fd);
+ assert(m);
+ assert(m->seat0);
+ assert(m->console_active_fd == fd);
- return r;
+ seat_read_active_vt(m->seat0);
+ return 0;
}
-int manager_spawn_autovt(Manager *m, int vtnr) {
- int r;
- DBusMessage *message = NULL, *reply = NULL;
- char *name = NULL;
- const char *mode = "fail";
- DBusError error;
+#if 0 /// UNNEEDED by elogind
+static int manager_reserve_vt(Manager *m) {
+ _cleanup_free_ char *p = NULL;
assert(m);
- assert(vtnr >= 1);
- dbus_error_init(&error);
-
- if ((unsigned) vtnr > m->n_autovts)
+ if (m->reserve_vt <= 0)
return 0;
- r = vt_is_busy(vtnr);
- if (r < 0)
- return r;
- else if (r > 0)
- return -EBUSY;
-
- message = dbus_message_new_method_call("org.freedesktop.systemd1", "/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "StartUnit");
- if (!message) {
- log_error("Could not allocate message.");
- r = -ENOMEM;
- goto finish;
- }
-
- if (asprintf(&name, "autovt@tty%i.service", vtnr) < 0) {
- log_error("Could not allocate service name.");
- r = -ENOMEM;
- goto finish;
- }
+ if (asprintf(&p, "/dev/tty%u", m->reserve_vt) < 0)
+ return log_oom();
- if (!dbus_message_append_args(message,
- DBUS_TYPE_STRING, &name,
- DBUS_TYPE_STRING, &mode,
- DBUS_TYPE_INVALID)) {
- log_error("Could not attach target and flag information to message.");
- r = -ENOMEM;
- goto finish;
- }
+ m->reserve_vt_fd = open(p, O_RDWR|O_NOCTTY|O_CLOEXEC|O_NONBLOCK);
+ if (m->reserve_vt_fd < 0) {
- reply = dbus_connection_send_with_reply_and_block(m->bus, message, -1, &error);
- if (!reply) {
- log_error("Failed to start unit: %s", bus_error_message(&error));
- goto finish;
+ /* Don't complain on VT-less systems */
+ if (errno != ENOENT)
+ log_warning_errno(errno, "Failed to pin reserved VT: %m");
+ return -errno;
}
- r = 0;
-
-finish:
- free(name);
-
- if (message)
- dbus_message_unref(message);
-
- if (reply)
- dbus_message_unref(reply);
-
- dbus_error_free(&error);
-
- return r;
+ return 0;
}
+#endif // 0
-int manager_get_session_by_cgroup(Manager *m, const char *cgroup, Session **session) {
+static int signal_agent_released(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+ _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
+ Manager *m = userdata;
+ const char *cgroup;
Session *s;
- char *p;
-
- assert(m);
- assert(cgroup);
- assert(session);
-
- s = hashmap_get(m->cgroups, cgroup);
- if (s) {
- *session = s;
- return 1;
- }
-
- p = strdup(cgroup);
- if (!p) {
- log_error("Out of memory.");
- return -ENOMEM;
- }
-
- for (;;) {
- char *e;
-
- e = strrchr(p, '/');
- if (!e || e == p) {
- free(p);
- *session = NULL;
- return 0;
- }
-
- *e = 0;
-
- s = hashmap_get(m->cgroups, p);
- if (s) {
- free(p);
- *session = s;
- return 1;
- }
- }
-}
-
-int manager_get_session_by_pid(Manager *m, pid_t pid, Session **session) {
- char *p;
+ uid_t sender_uid;
int r;
+ assert(message);
assert(m);
- assert(pid >= 1);
- assert(session);
- r = cg_get_by_pid(SYSTEMD_CGROUP_CONTROLLER, pid, &p);
+ /* only accept org.freedesktop.systemd1.Agent from UID=0 */
+ r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID, &creds);
if (r < 0)
return r;
- r = manager_get_session_by_cgroup(m, p, session);
- free(p);
-
- return r;
-}
-
-void manager_cgroup_notify_empty(Manager *m, const char *cgroup) {
- Session *s;
- int r;
-
- r = manager_get_session_by_cgroup(m, cgroup, &s);
- if (r <= 0)
- return;
-
- session_add_to_gc_queue(s);
-}
+ r = sd_bus_creds_get_euid(creds, &sender_uid);
+ if (r < 0 || sender_uid != 0)
+ return 0;
-static void manager_pipe_notify_eof(Manager *m, int fd) {
- Session *s;
- Inhibitor *i;
+ /* parse 'cgroup-empty' notification */
+ r = sd_bus_message_read(message, "s", &cgroup);
+ if (r < 0) {
+ bus_log_parse_error(r);
+ return 0;
+ }
- assert_se(m);
- assert_se(fd >= 0);
+ s = hashmap_get(m->sessions, cgroup);
- s = hashmap_get(m->session_fds, INT_TO_PTR(fd + 1));
- if (s) {
- assert(s->fifo_fd == fd);
- session_remove_fifo(s);
- session_stop(s);
- return;
+ if (!s) {
+ log_warning("Session not found: %s", cgroup);
+ return 0;
}
- i = hashmap_get(m->inhibitor_fds, INT_TO_PTR(fd + 1));
- if (i) {
- assert(i->fifo_fd == fd);
- inhibitor_stop(i);
- inhibitor_free(i);
- return;
- }
+ session_finalize(s);
+ session_free(s);
- assert_not_reached("Got EOF on unknown pipe");
+ return 0;
}
static int manager_connect_bus(Manager *m) {
- DBusError error;
+ _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
int r;
- struct epoll_event ev;
assert(m);
assert(!m->bus);
- assert(m->bus_fd < 0);
-
- dbus_error_init(&error);
- m->bus = dbus_bus_get_private(DBUS_BUS_SYSTEM, &error);
- if (!m->bus) {
- log_error("Failed to get system D-Bus connection: %s", bus_error_message(&error));
- r = -ECONNREFUSED;
- goto fail;
- }
+ r = sd_bus_default_system(&m->bus);
+ if (r < 0)
+ return log_error_errno(r, "Failed to connect to system bus: %m");
- if (!dbus_connection_register_object_path(m->bus, "/org/freedesktop/login1", &bus_manager_vtable, m) ||
- !dbus_connection_register_fallback(m->bus, "/org/freedesktop/login1/seat", &bus_seat_vtable, m) ||
- !dbus_connection_register_fallback(m->bus, "/org/freedesktop/login1/session", &bus_session_vtable, m) ||
- !dbus_connection_register_fallback(m->bus, "/org/freedesktop/login1/user", &bus_user_vtable, m) ||
- !dbus_connection_add_filter(m->bus, bus_message_filter, m, NULL)) {
- log_error("Not enough memory");
- r = -ENOMEM;
- goto fail;
- }
+ r = sd_bus_add_object_vtable(m->bus, NULL, "/org/freedesktop/login1", "org.freedesktop.login1.Manager", manager_vtable, m);
+ if (r < 0)
+ return log_error_errno(r, "Failed to add manager object vtable: %m");
+
+ /* elogind relies on signals from its release agent */
+ r = sd_bus_add_match(
+ m->bus,
+ NULL,
+ "type='signal',"
+ "interface='org.freedesktop.elogind.Agent',"
+ "member='Released',"
+ "path='/org/freedesktop/elogind/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");
- dbus_bus_add_match(m->bus,
- "type='signal',"
- "interface='org.freedesktop.systemd1.Agent',"
- "member='Released',"
- "path='/org/freedesktop/systemd1/agent'",
- &error);
+ r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/login1/seat", seat_node_enumerator, m);
+ if (r < 0)
+ return log_error_errno(r, "Failed to add seat enumerator: %m");
- if (dbus_error_is_set(&error)) {
- log_error("Failed to register match: %s", bus_error_message(&error));
- r = -EIO;
- goto fail;
- }
+ r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/login1/session", "org.freedesktop.login1.Session", session_vtable, session_object_find, m);
+ if (r < 0)
+ return log_error_errno(r, "Failed to add session object vtable: %m");
- r = dbus_bus_request_name(m->bus, "org.freedesktop.login1", DBUS_NAME_FLAG_DO_NOT_QUEUE, &error);
- if (dbus_error_is_set(&error)) {
- log_error("Failed to register name on bus: %s", bus_error_message(&error));
- r = -EIO;
- goto fail;
- }
+ r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/login1/session", session_node_enumerator, m);
+ if (r < 0)
+ return log_error_errno(r, "Failed to add session enumerator: %m");
- if (r != DBUS_REQUEST_NAME_REPLY_PRIMARY_OWNER) {
- log_error("Failed to acquire name.");
- r = -EEXIST;
- goto fail;
- }
+ r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/login1/user", "org.freedesktop.login1.User", user_vtable, user_object_find, m);
+ if (r < 0)
+ return log_error_errno(r, "Failed to add user object vtable: %m");
- m->bus_fd = bus_loop_open(m->bus);
- if (m->bus_fd < 0) {
- r = m->bus_fd;
- goto fail;
+ r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/login1/user", user_node_enumerator, m);
+ if (r < 0)
+ return log_error_errno(r, "Failed to add user enumerator: %m");
+
+#if 0 /// elogind does not support systemd as PID 1
+ 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;
}
+#endif // 0
- zero(ev);
- ev.events = EPOLLIN;
- ev.data.u32 = FD_BUS;
+ r = sd_bus_request_name(m->bus, "org.freedesktop.login1", 0);
+ if (r < 0)
+ return log_error_errno(r, "Failed to register name: %m");
- if (epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, m->bus_fd, &ev) < 0)
- goto fail;
+ r = sd_bus_attach_event(m->bus, m->event, SD_EVENT_PRIORITY_NORMAL);
+ if (r < 0)
+ return log_error_errno(r, "Failed to attach bus to event loop: %m");
return 0;
+}
-fail:
- dbus_error_free(&error);
+static int manager_vt_switch(sd_event_source *src, const struct signalfd_siginfo *si, void *data) {
+ Manager *m = data;
+ Session *active, *iter;
+
+ /*
+ * We got a VT-switch signal and we have to acknowledge it immediately.
+ * Preferably, we'd just use m->seat0->active->vtfd, but unfortunately,
+ * old user-space might run multiple sessions on a single VT, *sigh*.
+ * Therefore, we have to iterate all sessions and find one with a vtfd
+ * on the requested VT.
+ * As only VTs with active controllers have VT_PROCESS set, our current
+ * notion of the active VT might be wrong (for instance if the switch
+ * happens while we setup VT_PROCESS). Therefore, read the current VT
+ * first and then use s->active->vtnr as reference. Note that this is
+ * not racy, as no further VT-switch can happen as long as we're in
+ * synchronous VT_PROCESS mode.
+ */
+
+ assert(m->seat0);
+ seat_read_active_vt(m->seat0);
+
+ active = m->seat0->active;
+ if (!active || active->vtnr < 1) {
+ log_warning("Received VT_PROCESS signal without a registered session on that VT.");
+ return 0;
+ }
- return r;
+ if (active->vtfd >= 0) {
+ session_leave_vt(active);
+ } else {
+ LIST_FOREACH(sessions_by_seat, iter, m->seat0->sessions) {
+ if (iter->vtnr == active->vtnr && iter->vtfd >= 0) {
+ session_leave_vt(iter);
+ break;
+ }
+ }
+ }
+
+ return 0;
}
static int manager_connect_console(Manager *m) {
- struct epoll_event ev;
+ int r;
assert(m);
assert(m->console_active_fd < 0);
/* On certain architectures (S390 and Xen, and containers),
/dev/tty0 does not exist, so don't fail if we can't open
it. */
- if (access("/dev/tty0", F_OK) < 0) {
- m->console_active_fd = -1;
+ if (access("/dev/tty0", F_OK) < 0)
return 0;
- }
m->console_active_fd = open("/sys/class/tty/tty0/active", O_RDONLY|O_NOCTTY|O_CLOEXEC);
if (m->console_active_fd < 0) {
- log_error("Failed to open /sys/class/tty/tty0/active: %m");
- return -errno;
+
+ /* On some systems the device node /dev/tty0 may exist
+ * even though /sys/class/tty/tty0 does not. */
+ if (errno == ENOENT)
+ return 0;
+
+ return log_error_errno(errno, "Failed to open /sys/class/tty/tty0/active: %m");
+ }
+
+ r = sd_event_add_io(m->event, &m->console_active_event_source, m->console_active_fd, 0, manager_dispatch_console, m);
+ if (r < 0) {
+ log_error("Failed to watch foreground console");
+ return r;
}
- zero(ev);
- ev.events = 0;
- ev.data.u32 = FD_CONSOLE;
+ /*
+ * SIGRTMIN is used as global VT-release signal, SIGRTMIN + 1 is used
+ * as VT-acquire signal. We ignore any acquire-events (yes, we still
+ * have to provide a valid signal-number for it!) and acknowledge all
+ * release events immediately.
+ */
- if (epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, m->console_active_fd, &ev) < 0)
- return -errno;
+ if (SIGRTMIN + 1 > SIGRTMAX) {
+ log_error("Not enough real-time signals available: %u-%u", SIGRTMIN, SIGRTMAX);
+ return -EINVAL;
+ }
+
+ assert_se(ignore_signals(SIGRTMIN + 1, -1) >= 0);
+ assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGRTMIN, -1) >= 0);
+
+ r = sd_event_add_signal(m->event, NULL, SIGRTMIN, manager_vt_switch, m);
+ if (r < 0)
+ return r;
return 0;
}
static int manager_connect_udev(Manager *m) {
- struct epoll_event ev;
int r;
assert(m);
assert(!m->udev_seat_monitor);
+ assert(!m->udev_device_monitor);
assert(!m->udev_vcsa_monitor);
+ assert(!m->udev_button_monitor);
m->udev_seat_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
if (!m->udev_seat_monitor)
return -ENOMEM;
- r = udev_monitor_filter_add_match_tag(m->udev_seat_monitor, "seat");
+ r = udev_monitor_filter_add_match_tag(m->udev_seat_monitor, "master-of-seat");
if (r < 0)
return r;
- r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_seat_monitor, "graphics", NULL);
+ r = udev_monitor_enable_receiving(m->udev_seat_monitor);
if (r < 0)
return r;
- r = udev_monitor_enable_receiving(m->udev_seat_monitor);
+ 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);
if (r < 0)
return r;
- m->udev_seat_fd = udev_monitor_get_fd(m->udev_seat_monitor);
-
- zero(ev);
- ev.events = EPOLLIN;
- ev.data.u32 = FD_SEAT_UDEV;
+ m->udev_device_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
+ if (!m->udev_device_monitor)
+ return -ENOMEM;
- /* Don't bother watching VCSA devices, if nobody cares */
- if (m->n_autovts <= 0 || m->console_active_fd < 0)
- return 0;
+ r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_device_monitor, "input", NULL);
+ if (r < 0)
+ return r;
- if (epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, m->udev_seat_fd, &ev) < 0)
- return -errno;
+ r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_device_monitor, "graphics", NULL);
+ if (r < 0)
+ return r;
- 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_device_monitor, "drm", NULL);
+ if (r < 0)
+ return r;
- r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_vcsa_monitor, "vc", NULL);
+ r = udev_monitor_enable_receiving(m->udev_device_monitor);
if (r < 0)
return r;
- r = udev_monitor_enable_receiving(m->udev_vcsa_monitor);
+ 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);
if (r < 0)
return r;
- m->udev_vcsa_fd = udev_monitor_get_fd(m->udev_vcsa_monitor);
+ /* Don't watch keys if nobody cares */
+ if (m->handle_power_key != HANDLE_IGNORE ||
+ m->handle_suspend_key != HANDLE_IGNORE ||
+ m->handle_hibernate_key != HANDLE_IGNORE ||
+ m->handle_lid_switch != HANDLE_IGNORE ||
+ m->handle_lid_switch_docked != HANDLE_IGNORE) {
- zero(ev);
- ev.events = EPOLLIN;
- ev.data.u32 = FD_VCSA_UDEV;
+ m->udev_button_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
+ if (!m->udev_button_monitor)
+ return -ENOMEM;
- if (epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, m->udev_vcsa_fd, &ev) < 0)
- return -errno;
+ r = udev_monitor_filter_add_match_tag(m->udev_button_monitor, "power-switch");
+ if (r < 0)
+ return r;
+
+ r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_button_monitor, "input", NULL);
+ if (r < 0)
+ return r;
+
+ r = udev_monitor_enable_receiving(m->udev_button_monitor);
+ 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);
+ if (r < 0)
+ return r;
+ }
+
+ /* Don't bother watching VCSA devices, if nobody cares */
+#if 0 /// elogind does not support autospawning of vts
+ 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;
+ }
+#endif // 0
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;
assert(m);
while ((seat = m->seat_gc_queue)) {
- LIST_REMOVE(Seat, gc_queue, m->seat_gc_queue, seat);
+ LIST_REMOVE(gc_queue, m->seat_gc_queue, seat);
seat->in_gc_queue = false;
- if (seat_check_gc(seat, drop_not_started) == 0) {
- seat_stop(seat);
+ if (!seat_check_gc(seat, drop_not_started)) {
+ seat_stop(seat, false);
seat_free(seat);
}
}
while ((session = m->session_gc_queue)) {
- LIST_REMOVE(Session, gc_queue, m->session_gc_queue, session);
+ LIST_REMOVE(gc_queue, m->session_gc_queue, session);
session->in_gc_queue = false;
- if (session_check_gc(session, drop_not_started) == 0) {
- session_stop(session);
+ /* First, if we are not closing yet, initiate stopping */
+ if (!session_check_gc(session, drop_not_started) &&
+ session_get_state(session) != SESSION_CLOSING)
+ session_stop(session, false);
+
+ /* Normally, this should make the session referenced
+ * again, if it doesn't then let's get rid of it
+ * immediately */
+ if (!session_check_gc(session, drop_not_started)) {
+ session_finalize(session);
session_free(session);
}
}
while ((user = m->user_gc_queue)) {
- LIST_REMOVE(User, gc_queue, m->user_gc_queue, user);
+ LIST_REMOVE(gc_queue, m->user_gc_queue, user);
user->in_gc_queue = false;
- if (user_check_gc(user, drop_not_started) == 0) {
- user_stop(user);
+ /* First step: queue stop jobs */
+ if (!user_check_gc(user, drop_not_started))
+ user_stop(user, false);
+
+ /* Second step: finalize user */
+ if (!user_check_gc(user, drop_not_started)) {
+ user_finalize(user);
user_free(user);
}
}
}
-int manager_get_idle_hint(Manager *m, dual_timestamp *t) {
- Session *s;
- bool idle_hint;
- dual_timestamp ts = { 0, 0 };
- Iterator i;
+static int manager_dispatch_idle_action(sd_event_source *s, uint64_t t, void *userdata) {
+ Manager *m = userdata;
+ struct dual_timestamp since;
+ usec_t n, elapse;
+ int r;
assert(m);
- idle_hint = !manager_is_inhibited(m, INHIBIT_IDLE, INHIBIT_BLOCK, t);
+ if (m->idle_action == HANDLE_IGNORE ||
+ m->idle_action_usec <= 0)
+ return 0;
+
+ n = now(CLOCK_MONOTONIC);
- HASHMAP_FOREACH(s, m->sessions, i) {
- dual_timestamp k;
- int ih;
+ r = manager_get_idle_hint(m, &since);
+ if (r <= 0)
+ /* Not idle. Let's check if after a timeout it might be idle then. */
+ elapse = n + m->idle_action_usec;
+ else {
+ /* Idle! Let's see if it's time to do something, or if
+ * we shall sleep for longer. */
+
+ if (n >= since.monotonic + m->idle_action_usec &&
+ (m->idle_action_not_before_usec <= 0 || n >= m->idle_action_not_before_usec + m->idle_action_usec)) {
+ log_info("System idle. Taking action.");
+
+ manager_handle_action(m, 0, m->idle_action, false, false);
+ m->idle_action_not_before_usec = n;
+ }
- ih = session_get_idle_hint(s, &k);
- if (ih < 0)
- return ih;
+ elapse = MAX(since.monotonic, m->idle_action_not_before_usec) + m->idle_action_usec;
+ }
- if (!ih) {
- if (!idle_hint) {
- if (k.monotonic < ts.monotonic)
- ts = k;
- } else {
- idle_hint = false;
- ts = k;
- }
- } else if (idle_hint) {
+ if (!m->idle_action_event_source) {
- if (k.monotonic > ts.monotonic)
- ts = k;
- }
+ r = sd_event_add_time(
+ m->event,
+ &m->idle_action_event_source,
+ CLOCK_MONOTONIC,
+ elapse, USEC_PER_SEC*30,
+ manager_dispatch_idle_action, m);
+ if (r < 0)
+ return log_error_errno(r, "Failed to add idle event source: %m");
+
+ r = sd_event_source_set_priority(m->idle_action_event_source, SD_EVENT_PRIORITY_IDLE+10);
+ if (r < 0)
+ return log_error_errno(r, "Failed to set idle event source priority: %m");
+ } else {
+ r = sd_event_source_set_time(m->idle_action_event_source, elapse);
+ if (r < 0)
+ return log_error_errno(r, "Failed to set idle event timer: %m");
+
+ r = sd_event_source_set_enabled(m->idle_action_event_source, SD_EVENT_ONESHOT);
+ if (r < 0)
+ return log_error_errno(r, "Failed to enable idle event timer: %m");
}
- if (t)
- *t = ts;
+ return 0;
+}
+
+static int manager_parse_config_file(Manager *m) {
+#if 0 /// elogind parses its own config file
+ assert(m);
+
+ return config_parse_many(PKGSYSCONFDIR "/logind.conf",
+ CONF_PATHS_NULSTR("systemd/logind.conf.d"),
+ "Login\0",
+ config_item_perf_lookup, logind_gperf_lookup,
+ false, m);
+#else
+ const char* logind_conf = getenv("ELOGIND_CONF_FILE");
+
+ assert(m);
+
+ if (!logind_conf)
+ logind_conf = PKGSYSCONFDIR "/logind.conf";
- return idle_hint;
+ return config_parse(NULL, logind_conf, NULL, "Login\0Sleep\0",
+ config_item_perf_lookup, logind_gperf_lookup,
+ false, false, true, m);
+#endif // 0
}
-int manager_startup(Manager *m) {
+static int manager_dispatch_reload_signal(sd_event_source *s, const struct signalfd_siginfo *si, void *userdata) {
+ Manager *m = userdata;
+ int r;
+
+ manager_reset_config(m);
+ r = manager_parse_config_file(m);
+ if (r < 0)
+ log_warning_errno(r, "Failed to parse config file, using defaults: %m");
+ else
+ log_info("Config file reloaded.");
+
+ return 0;
+}
+
+static int manager_startup(Manager *m) {
int r;
Seat *seat;
Session *session;
User *user;
+ Button *button;
Inhibitor *inhibitor;
Iterator i;
assert(m);
- assert(m->epoll_fd <= 0);
- cg_shorten_controllers(m->reset_controllers);
- cg_shorten_controllers(m->controllers);
+ assert_se(sigprocmask_many(SIG_SETMASK, NULL, SIGHUP, -1) >= 0);
- m->epoll_fd = epoll_create1(EPOLL_CLOEXEC);
- if (m->epoll_fd < 0)
- return -errno;
+ r = sd_event_add_signal(m->event, NULL, SIGHUP, manager_dispatch_reload_signal, m);
+ if (r < 0)
+ return log_error_errno(r, "Failed to register SIGHUP handler: %m");
/* Connect to console */
r = manager_connect_console(m);
/* Connect to udev */
r = manager_connect_udev(m);
if (r < 0)
- return r;
+ return log_error_errno(r, "Failed to create udev watchers: %m");
/* Connect to the bus */
r = manager_connect_bus(m);
return r;
/* Instantiate magic seat 0 */
- r = manager_add_seat(m, "seat0", &m->vtconsole);
+ r = manager_add_seat(m, "seat0", &m->seat0);
if (r < 0)
- return r;
+ return log_error_errno(r, "Failed to add seat0: %m");
+
+ r = manager_set_lid_switch_ignore(m, 0 + m->holdoff_timeout_usec);
+ if (r < 0)
+ log_warning_errno(r, "Failed to set up lid switch ignore event source: %m");
/* Deserialize state */
- manager_enumerate_devices(m);
- manager_enumerate_seats(m);
- manager_enumerate_users(m);
- manager_enumerate_sessions(m);
- manager_enumerate_inhibitors(m);
+ r = manager_enumerate_devices(m);
+ if (r < 0)
+ log_warning_errno(r, "Device enumeration failed: %m");
+
+ r = manager_enumerate_seats(m);
+ if (r < 0)
+ log_warning_errno(r, "Seat enumeration failed: %m");
+
+ r = manager_enumerate_users(m);
+ if (r < 0)
+ log_warning_errno(r, "User enumeration failed: %m");
+
+ r = manager_enumerate_sessions(m);
+ if (r < 0)
+ log_warning_errno(r, "Session enumeration failed: %m");
+
+ r = manager_enumerate_inhibitors(m);
+ if (r < 0)
+ log_warning_errno(r, "Inhibitor enumeration failed: %m");
+
+ r = manager_enumerate_buttons(m);
+ if (r < 0)
+ log_warning_errno(r, "Button enumeration failed: %m");
/* Remove stale objects before we start them */
manager_gc(m, false);
+ /* Reserve the special reserved VT */
+#if 0 /// elogind does not support autospawning of vts
+ manager_reserve_vt(m);
+#endif // 0
+
/* And start everything */
HASHMAP_FOREACH(seat, m->seats, i)
seat_start(seat);
HASHMAP_FOREACH(inhibitor, m->inhibitors, i)
inhibitor_start(inhibitor);
- return 0;
-}
-
-int manager_run(Manager *m) {
- assert(m);
-
- for (;;) {
- struct epoll_event event;
- int n;
- int msec = -1;
-
- manager_gc(m, true);
-
- if (manager_dispatch_delayed(m) > 0)
- continue;
-
- if (dbus_connection_dispatch(m->bus) != DBUS_DISPATCH_COMPLETE)
- continue;
-
- manager_gc(m, true);
+ HASHMAP_FOREACH(button, m->buttons, i)
+ button_check_switches(button);
- if (m->delayed_unit) {
- usec_t x, y;
-
- x = now(CLOCK_MONOTONIC);
- y = m->delayed_timestamp + m->inhibit_delay_max;
-
- msec = x >= y ? 0 : (int) ((y - x) / USEC_PER_MSEC);
- }
-
- n = epoll_wait(m->epoll_fd, &event, 1, msec);
- if (n < 0) {
- if (errno == EINTR || errno == EAGAIN)
- continue;
-
- log_error("epoll() failed: %m");
- return -errno;
- }
-
- if (n == 0)
- continue;
-
- switch (event.data.u32) {
-
- case FD_SEAT_UDEV:
- manager_dispatch_seat_udev(m);
- break;
-
- case FD_VCSA_UDEV:
- manager_dispatch_vcsa_udev(m);
- break;
-
- case FD_CONSOLE:
- manager_dispatch_console(m);
- break;
-
- case FD_BUS:
- bus_loop_dispatch(m->bus_fd);
- break;
-
- default:
- if (event.data.u32 >= FD_FIFO_BASE)
- manager_pipe_notify_eof(m, event.data.u32 - FD_FIFO_BASE);
- }
- }
+ manager_dispatch_idle_action(NULL, 0, m);
return 0;
}
-static int manager_parse_config_file(Manager *m) {
- FILE *f;
- const char *fn;
+static int manager_run(Manager *m) {
int r;
assert(m);
- fn = "/etc/systemd/logind.conf";
- f = fopen(fn, "re");
- if (!f) {
- if (errno == ENOENT)
+ for (;;) {
+ r = sd_event_get_state(m->event);
+ if (r < 0)
+ return r;
+ if (r == SD_EVENT_FINISHED)
return 0;
- log_warning("Failed to open configuration file %s: %m", fn);
- return -errno;
- }
-
- r = config_parse(fn, f, "Login\0", config_item_perf_lookup, (void*) logind_gperf_lookup, false, m);
- if (r < 0)
- log_warning("Failed to parse configuration file: %s", strerror(-r));
+ manager_gc(m, true);
- fclose(f);
+ r = manager_dispatch_delayed(m, false);
+ if (r < 0)
+ return r;
+ if (r > 0)
+ continue;
- return r;
+ r = sd_event_run(m->event, (uint64_t) -1);
+ if (r < 0)
+ return r;
+ }
}
int main(int argc, char *argv[]) {
Manager *m = NULL;
int r;
+ elogind_set_program_name(argv[0]);
log_set_target(LOG_TARGET_AUTO);
log_set_facility(LOG_AUTH);
log_parse_environment();
log_open();
+#ifdef ENABLE_DEBUG_ELOGIND
+ log_set_max_level(LOG_DEBUG);
+#endif // ENABLE_DEBUG_ELOGIND
+
umask(0022);
if (argc != 1) {
goto finish;
}
+ r = mac_selinux_init();
+ if (r < 0) {
+ log_error_errno(r, "Could not initialize labelling: %m");
+ goto finish;
+ }
+
+ /* 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 sure this check
+ * stays in. */
+#if 0 /// elogind can not rely on systemd to help, so we need a bit more effort than this
+ mkdir_label("/run/systemd/seats", 0755);
+ mkdir_label("/run/systemd/users", 0755);
+ mkdir_label("/run/systemd/sessions", 0755);
+#else
+ r = mkdir_label("/run/systemd", 0755);
+ if ( (r < 0) && (-EEXIST != r) )
+ return log_error_errno(r, "Failed to create /run/systemd : %m");
+ r = mkdir_label("/run/systemd/seats", 0755);
+ if ( r < 0 && (-EEXIST != r) )
+ return log_error_errno(r, "Failed to create /run/systemd/seats : %m");
+ r = mkdir_label("/run/systemd/users", 0755);
+ if ( r < 0 && (-EEXIST != r) )
+ return log_error_errno(r, "Failed to create /run/systemd/users : %m");
+ r = mkdir_label("/run/systemd/sessions", 0755);
+ if ( r < 0 && (-EEXIST != r) )
+ return log_error_errno(r, "Failed to create /run/systemd/sessions : %m");
+ r = mkdir_label("/run/systemd/machines", 0755);
+ if ( r < 0 && (-EEXIST != r) )
+ return log_error_errno(r, "Failed to create /run/systemd/machines : %m");
+#endif // 0
+
m = manager_new();
if (!m) {
- log_error("Out of memory");
- r = -ENOMEM;
+ r = log_oom();
goto finish;
}
r = manager_startup(m);
if (r < 0) {
- log_error("Failed to fully start up daemon: %s", strerror(-r));
+ log_error_errno(r, "Failed to fully start up daemon: %m");
goto finish;
}
- log_debug("systemd-logind running as pid %lu", (unsigned long) getpid());
+ log_debug("elogind running as pid "PID_FMT, getpid());
sd_notify(false,
"READY=1\n"
r = manager_run(m);
- log_debug("systemd-logind stopped as pid %lu", (unsigned long) getpid());
+ log_debug("elogind stopped as pid "PID_FMT, getpid());
finish:
sd_notify(false,
+ "STOPPING=1\n"
"STATUS=Shutting down...");
if (m)
~ianmdlvl / elogind.git / blobdiff