-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
+/* SPDX-License-Identifier: LGPL-2.1+ */
/***
This file is part of systemd.
#include "def.h"
#include "dirent-util.h"
#include "fd-util.h"
-#include "formats-util.h"
+#include "format-util.h"
#include "logind.h"
+#include "selinux-util.h"
#include "signal-util.h"
#include "strv.h"
#include "udev-util.h"
+#include "cgroup-util.h"
static void manager_free(Manager *m);
-static Manager *manager_new(void) {
- Manager *m;
- int r;
-
- m = new0(Manager, 1);
- if (!m)
- return NULL;
-
- m->console_active_fd = -1;
- m->reserve_vt_fd = -1;
-
+static void manager_reset_config(Manager *m) {
m->n_autovts = 6;
m->reserve_vt = 6;
m->remove_ipc = true;
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->idle_action_not_before_usec = now(CLOCK_MONOTONIC);
- m->runtime_dir_size = PAGE_ALIGN((size_t) (physical_memory() / 10)); /* 10% */
- m->user_tasks_max = UINT64_C(4096);
+ m->runtime_dir_size = physical_memory_scale(10U, 100U); /* 10% */
+ m->user_tasks_max = system_tasks_max_scale(DEFAULT_USER_TASKS_MAX_PERCENTAGE, 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);
+}
+
+static Manager *manager_new(void) {
+ Manager *m;
+ int r;
+
+ m = new0(Manager, 1);
+ if (!m)
+ return NULL;
+
+ m->console_active_fd = -1;
+ m->reserve_vt_fd = -1;
+
+ m->idle_action_not_before_usec = now(CLOCK_MONOTONIC);
m->devices = hashmap_new(&string_hash_ops);
m->seats = hashmap_new(&string_hash_ops);
if (!m->devices || !m->seats || !m->sessions || !m->users || !m->inhibitors || !m->buttons || !m->user_units || !m->session_units)
goto fail;
- m->kill_exclude_users = strv_new("root", NULL);
- if (!m->kill_exclude_users)
- goto fail;
-
m->udev = udev_new();
if (!m->udev)
goto fail;
sd_event_set_watchdog(m->event, true);
+ manager_reset_config(m);
+
return m;
fail:
Inhibitor *i;
Button *b;
- assert(m);
+ if (!m)
+ return;
while ((session = hashmap_first(m->sessions)))
session_free(session);
return r;
}
+static int manager_attach_fds(Manager *m) {
+ _cleanup_strv_free_ char **fdnames = NULL;
+ int n, i, fd;
+
+ /* 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 n;
+
+ for (i = 0; i < n; i++) {
+ struct stat st;
+ SessionDevice *sd;
+ Session *s;
+ char *id;
+
+ fd = SD_LISTEN_FDS_START + i;
+
+ id = startswith(fdnames[i], "session-");
+ if (!id)
+ continue;
+
+ 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 (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, &st.st_rdev);
+ 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(st.st_rdev), minor(st.st_rdev), s->id);
+ close_nointr(fd);
+ continue;
+ }
+
+ log_debug("Attaching fd to session device [%u:%u] for session %s",
+ major(st.st_rdev), minor(st.st_rdev), s->id);
+
+ session_device_attach_fd(sd, fd, s->was_active);
+ }
+
+ return 0;
+}
+
static int manager_enumerate_sessions(Manager *m) {
_cleanup_closedir_ DIR *d = NULL;
struct dirent *de;
- int r = 0;
+ int r = 0, k;
assert(m);
FOREACH_DIRENT(de, d, return -errno) {
struct Session *s;
- int k;
if (!dirent_is_file(de))
continue;
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);
-
r = k;
continue;
}
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");
+
return r;
}
}
static int manager_connect_bus(Manager *m) {
- _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
+ _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
int r;
assert(m);
if (r < 0)
return log_error_errno(r, "Failed to register name: %m");
- r = sd_bus_attach_event(m->bus, m->event, 0);
+ 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;
}
+static int manager_parse_config_file(Manager *m) {
+ assert(m);
+
+ return config_parse_many_nulstr(PKGSYSCONFDIR "/logind.conf",
+ CONF_PATHS_NULSTR("systemd/logind.conf.d"),
+ "Login\0",
+ config_item_perf_lookup, logind_gperf_lookup,
+ CONFIG_PARSE_WARN, 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;
assert(m);
+ assert_se(sigprocmask_many(SIG_SETMASK, NULL, SIGHUP, -1) >= 0);
+
+ 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);
if (r < 0)
}
}
-static int manager_parse_config_file(Manager *m) {
- 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);
-}
-
int main(int argc, char *argv[]) {
Manager *m = NULL;
int r;
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
goto finish;
}
- log_debug("systemd-logind running as pid "PID_FMT, getpid());
+ log_debug("systemd-logind running as pid "PID_FMT, getpid_cached());
sd_notify(false,
"READY=1\n"
r = manager_run(m);
- log_debug("systemd-logind stopped as pid "PID_FMT, getpid());
+ log_debug("systemd-logind stopped as pid "PID_FMT, getpid_cached());
finish:
sd_notify(false,
projects / thirdparty / systemd.git / blobdiff