chiark / gitweb /
shared: add formats-util.h
[elogind.git] / src / login / logind.c
index 5856c336f6492c306ef6907e98a1535297082bbf..534f7838fc232810c3983264b59bd62ab7b15686 100644 (file)
 #include <string.h>
 #include <unistd.h>
 
+#include "label.h"
 #include "sd-daemon.h"
 #include "strv.h"
+#include "cgroup-util.h"
 #include "conf-parser.h"
 #include "bus-util.h"
 #include "bus-error.h"
 #include "logind.h"
 #include "udev-util.h"
+#include "formats-util.h"
 
 Manager *manager_new(void) {
         Manager *m;
@@ -75,6 +78,23 @@ Manager *manager_new(void) {
         if (!m->kill_exclude_users)
                 goto fail;
 
+        m->suspend_mode = NULL;
+        m->suspend_state = strv_new("mem", "standby", "freeze", NULL);
+        if (!m->suspend_state)
+                goto fail;
+        m->hibernate_mode = strv_new("platform", "shutdown", NULL);
+        if (!m->hibernate_mode)
+                goto fail;
+        m->hibernate_state = strv_new("disk", NULL);
+        if (!m->hibernate_state)
+                goto fail;
+        m->hybrid_sleep_mode = strv_new("suspend", "platform", "shutdown", NULL);
+        if (!m->hybrid_sleep_mode)
+                goto fail;
+        m->hybrid_sleep_state = strv_new("disk", NULL);
+        if (!m->hybrid_sleep_state)
+                goto fail;
+
         m->udev = udev_new();
         if (!m->udev)
                 goto fail;
@@ -85,6 +105,7 @@ Manager *manager_new(void) {
 
         sd_event_set_watchdog(m->event, true);
 
+
         return m;
 
 fail:
@@ -160,7 +181,13 @@ void manager_free(Manager *m) {
         strv_free(m->kill_only_users);
         strv_free(m->kill_exclude_users);
 
-        free(m->action_job);
+        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);
+
         free(m);
 }
 
@@ -491,28 +518,6 @@ static int manager_dispatch_device_udev(sd_event_source *s, int fd, uint32_t rev
         return 0;
 }
 
-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);
-
-        d = udev_monitor_receive_device(m->udev_vcsa_monitor);
-        if (!d)
-                return -ENOMEM;
-
-        name = udev_device_get_sysname(d);
-
-        /* Whenever a VCSA device is removed try to reallocate our
-         * VTs, to make sure our auto VTs never go away. */
-
-        if (name && startswith(name, "vcsa") && streq_ptr(udev_device_get_action(d), "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_udev_device_unref_ struct udev_device *d = NULL;
         Manager *m = userdata;
@@ -538,6 +543,35 @@ 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;
+
+        assert(bus);
+        assert(message);
+        assert(m);
+
+        r = sd_bus_message_read(message, "s", &cgroup);
+        if (r < 0) {
+                bus_log_parse_error(r);
+                return 0;
+        }
+
+        s = hashmap_get(m->sessions, cgroup);
+
+        if (!s) {
+                log_warning("Session not found: %s", cgroup);
+                return 0;
+        }
+
+        session_finalize(s);
+        session_free(s);
+
+        return 0;
+}
+
 static int manager_connect_bus(Manager *m) {
         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
         int r;
@@ -553,6 +587,13 @@ 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");
@@ -629,6 +670,57 @@ static int manager_vt_switch(sd_event_source *src, const struct signalfd_siginfo
         return 0;
 }
 
+static int manager_setup_cgroup(Manager *m) {
+        _cleanup_free_ char *path = NULL;
+        int r;
+
+        assert(m);
+
+        /* 1. Determine hierarchy */
+        free(m->cgroup_root);
+        m->cgroup_root = NULL;
+
+        r = cg_pid_get_path(SYSTEMD_CGROUP_CONTROLLER, 0, &m->cgroup_root);
+        if (r < 0)
+                return log_error_errno(r, "Cannot determine cgroup we are running in: %m");
+
+        /* Make sure to store away the root value without trailing
+         * slash, even for the root dir, so that we can easily prepend
+         * it everywhere. */
+        if (streq(m->cgroup_root, "/"))
+                m->cgroup_root[0] = 0;
+
+        /* 2. Show data */
+        r = cg_get_path(SYSTEMD_CGROUP_CONTROLLER, m->cgroup_root, NULL, &path);
+        if (r < 0)
+                return log_error_errno(r, "Cannot find cgroup mount point: %m");
+
+        log_debug("Using cgroup controller " SYSTEMD_CGROUP_CONTROLLER ". File system hierarchy is at %s.", path);
+
+        /* 3. Install agent */
+        r = cg_install_release_agent(SYSTEMD_CGROUP_CONTROLLER, SYSTEMD_CGROUP_AGENT_PATH);
+        if (r < 0)
+                log_warning_errno(r, "Failed to install release agent, ignoring: %m");
+        else if (r > 0)
+                log_debug("Installed release agent.");
+        else
+                log_debug("Release agent already installed.");
+
+        /* 4. Make sure we are in the root cgroup */
+        r = cg_create_and_attach(SYSTEMD_CGROUP_CONTROLLER, m->cgroup_root, 0);
+        if (r < 0)
+                return log_error_errno(r, "Failed to create root cgroup hierarchy: %m");
+
+        /* 5. And pin it, so that it cannot be unmounted */
+        safe_close(m->pin_cgroupfs_fd);
+
+        m->pin_cgroupfs_fd = open(path, O_RDONLY|O_CLOEXEC|O_DIRECTORY|O_NOCTTY|O_NONBLOCK);
+        if (m->pin_cgroupfs_fd < 0)
+                return log_error_errno(errno, "Failed to open pin file: %m");
+
+        return 0;
+}
+
 static int manager_connect_console(Manager *m) {
         int r;
 
@@ -888,6 +980,11 @@ int manager_startup(Manager *m) {
 
         assert(m);
 
+        /* Make cgroups */
+        r = manager_setup_cgroup(m);
+        if (r < 0)
+                return r;
+
         /* Connect to console */
         r = manager_connect_console(m);
         if (r < 0)
@@ -980,7 +1077,7 @@ int manager_run(Manager *m) {
                 if (manager_dispatch_delayed(m) > 0)
                         continue;
 
-                if (m->action_what != 0 && !m->action_job) {
+                if (m->action_what != 0) {
                         usec_t x, y;
 
                         x = now(CLOCK_MONOTONIC);
@@ -996,13 +1093,25 @@ int manager_run(Manager *m) {
 }
 
 static int manager_parse_config_file(Manager *m) {
+        const char *unit, *logind_conf, *sections;
+        FILE *file;
+        bool relaxed, allow_include, warn;
+
         assert(m);
 
-        return config_parse_many("/etc/systemd/logind.conf",
-                                 CONF_DIRS_NULSTR("systemd/logind.conf"),
-                                 "Login\0",
-                                 config_item_perf_lookup, logind_gperf_lookup,
-                                 false, m);
+        unit = NULL;
+        logind_conf = getenv("ELOGIND_CONF_FILE");
+        if (!logind_conf)
+                logind_conf = PKGSYSCONFDIR "/logind.conf";
+        sections = "Login\0Sleep\0";
+        file = NULL;
+        relaxed = false;
+        allow_include = false;
+        warn = true;
+
+        return config_parse(unit, logind_conf, file, sections,
+                            config_item_perf_lookup, logind_gperf_lookup,
+                            relaxed, allow_include, warn, m);
 }
 
 int main(int argc, char *argv[]) {
@@ -1027,10 +1136,10 @@ 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) {