Isolation of udev code from remaining systemd

This commit is a first attempt to isolate the udev code from the
remaining code base.  It intentionally does not modify any files
but purely delete files which, on a first examination, appear to
not be needed.  This is a sweeping commit which may easily have
missed needed code.  Files can be retrieved by doing a checkout
from the previous commit:

 git checkout 2944f347d0 -- <filename>

1 files changed, 0 insertions, 1680 deletions

diff --git a/src/login/logind.c b/src/login/logind.c
deleted file mode 100644
index 9cce481340..0000000000
--- a/src/login/logind.c
+++ /dev/null
@@ -1,1680 +0,0 @@
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
-/***
-  This file is part of systemd.
-
-  Copyright 2011 Lennart Poettering
-
-  systemd is free software; you can redistribute it and/or modify it
-  under the terms of the GNU Lesser General Public License as published by
-  the Free Software Foundation; either version 2.1 of the License, or
-  (at your option) any later version.
-
-  systemd is distributed in the hope that it will be useful, but
-  WITHOUT ANY WARRANTY; without even the implied warranty of
-  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-  Lesser General Public License for more details.
-
-  You should have received a copy of the GNU Lesser General Public License
-  along with systemd; If not, see <http://www.gnu.org/licenses/>.
-***/
-
-#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>
-
-#include "logind.h"
-#include "dbus-common.h"
-#include "dbus-loop.h"
-#include "strv.h"
-#include "conf-parser.h"
-
-Manager *manager_new(void) {
-        Manager *m;
-
-        m = new0(Manager, 1);
-        if (!m)
-                return NULL;
-
-        m->console_active_fd = -1;
-        m->bus_fd = -1;
-        m->udev_seat_fd = -1;
-        m->udev_vcsa_fd = -1;
-        m->udev_button_fd = -1;
-        m->epoll_fd = -1;
-        m->reserve_vt_fd = -1;
-
-        m->n_autovts = 6;
-        m->reserve_vt = 6;
-        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->lid_switch_ignore_inhibited = true;
-
-        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->buttons = hashmap_new(string_hash_func, string_compare_func);
-
-        m->user_cgroups = hashmap_new(string_hash_func, string_compare_func);
-        m->session_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->button_fds = hashmap_new(trivial_hash_func, trivial_compare_func);
-
-        if (!m->devices || !m->seats || !m->sessions || !m->users || !m->inhibitors || !m->buttons ||
-            !m->user_cgroups || !m->session_cgroups ||
-            !m->session_fds || !m->inhibitor_fds || !m->button_fds) {
-                manager_free(m);
-                return NULL;
-        }
-
-        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->udev = udev_new();
-        if (!m->udev) {
-                manager_free(m);
-                return NULL;
-        }
-
-        if (cg_get_user_path(&m->cgroup_path) < 0) {
-                manager_free(m);
-                return NULL;
-        }
-
-        return m;
-}
-
-void manager_free(Manager *m) {
-        Session *session;
-        User *u;
-        Device *d;
-        Seat *s;
-        Inhibitor *i;
-        Button *b;
-
-        assert(m);
-
-        while ((session = hashmap_first(m->sessions)))
-                session_free(session);
-
-        while ((u = hashmap_first(m->users)))
-                user_free(u);
-
-        while ((d = hashmap_first(m->devices)))
-                device_free(d);
-
-        while ((s = hashmap_first(m->seats)))
-                seat_free(s);
-
-        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->user_cgroups);
-        hashmap_free(m->session_cgroups);
-
-        hashmap_free(m->session_fds);
-        hashmap_free(m->inhibitor_fds);
-        hashmap_free(m->button_fds);
-
-        if (m->console_active_fd >= 0)
-                close_nointr_nofail(m->console_active_fd);
-
-        if (m->udev_seat_monitor)
-                udev_monitor_unref(m->udev_seat_monitor);
-        if (m->udev_vcsa_monitor)
-                udev_monitor_unref(m->udev_vcsa_monitor);
-        if (m->udev_button_monitor)
-                udev_monitor_unref(m->udev_button_monitor);
-
-        if (m->udev)
-                udev_unref(m->udev);
-
-        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);
-
-        if (m->epoll_fd >= 0)
-                close_nointr_nofail(m->epoll_fd);
-
-        if (m->reserve_vt_fd >= 0)
-                close_nointr_nofail(m->reserve_vt_fd);
-
-        strv_free(m->controllers);
-        strv_free(m->reset_controllers);
-        strv_free(m->kill_only_users);
-        strv_free(m->kill_exclude_users);
-
-        free(m->cgroup_path);
-        free(m);
-}
-
-int manager_add_device(Manager *m, const char *sysfs, Device **_device) {
-        Device *d;
-
-        assert(m);
-        assert(sysfs);
-
-        d = hashmap_get(m->devices, sysfs);
-        if (d) {
-                if (_device)
-                        *_device = d;
-
-                return 0;
-        }
-
-        d = device_new(m, sysfs);
-        if (!d)
-                return -ENOMEM;
-
-        if (_device)
-                *_device = d;
-
-        return 0;
-}
-
-int manager_add_seat(Manager *m, const char *id, Seat **_seat) {
-        Seat *s;
-
-        assert(m);
-        assert(id);
-
-        s = hashmap_get(m->seats, id);
-        if (s) {
-                if (_seat)
-                        *_seat = s;
-
-                return 0;
-        }
-
-        s = seat_new(m, id);
-        if (!s)
-                return -ENOMEM;
-
-        if (_seat)
-                *_seat = s;
-
-        return 0;
-}
-
-int manager_add_session(Manager *m, User *u, const char *id, Session **_session) {
-        Session *s;
-
-        assert(m);
-        assert(id);
-
-        s = hashmap_get(m->sessions, id);
-        if (s) {
-                if (_session)
-                        *_session = s;
-
-                return 0;
-        }
-
-        s = session_new(m, u, id);
-        if (!s)
-                return -ENOMEM;
-
-        if (_session)
-                *_session = s;
-
-        return 0;
-}
-
-int manager_add_user(Manager *m, uid_t uid, gid_t gid, const char *name, User **_user) {
-        User *u;
-
-        assert(m);
-        assert(name);
-
-        u = hashmap_get(m->users, ULONG_TO_PTR((unsigned long) uid));
-        if (u) {
-                if (_user)
-                        *_user = u;
-
-                return 0;
-        }
-
-        u = user_new(m, uid, gid, name);
-        if (!u)
-                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, NULL);
-        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_add_button(Manager *m, const char *name, Button **_button) {
-        Button *b;
-
-        assert(m);
-        assert(name);
-
-        b = hashmap_get(m->buttons, name);
-        if (b) {
-                if (_button)
-                        *_button = b;
-
-                return 0;
-        }
-
-        b = button_new(m, name);
-        if (!b)
-                return -ENOMEM;
-
-        if (_button)
-                *_button = b;
-
-        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_process_button_device(Manager *m, struct udev_device *d) {
-        Button *b;
-
-        int r;
-
-        assert(m);
-
-        if (streq_ptr(udev_device_get_action(d), "remove")) {
-
-                b = hashmap_get(m->buttons, udev_device_get_sysname(d));
-                if (!b)
-                        return 0;
-
-                button_free(b);
-
-        } else {
-                const char *sn;
-
-                r = manager_add_button(m, udev_device_get_sysname(d), &b);
-                if (r < 0)
-                        return r;
-
-                sn = udev_device_get_property_value(d, "ID_SEAT");
-                if (isempty(sn))
-                        sn = "seat0";
-
-                button_set_seat(b, sn);
-                button_open(b);
-        }
-
-        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");
-        if (r < 0)
-                goto finish;
-
-        r = udev_enumerate_add_match_tag(e, "seat");
-        if (r < 0)
-                goto finish;
-
-        r = udev_enumerate_scan_devices(e);
-        if (r < 0)
-                goto finish;
-
-        first = udev_enumerate_get_list_entry(e);
-        udev_list_entry_foreach(item, first) {
-                struct udev_device *d;
-                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 (k < 0)
-                        r = k;
-        }
-
-finish:
-        if (e)
-                udev_enumerate_unref(e);
-
-        return r;
-}
-
-int manager_enumerate_buttons(Manager *m) {
-        struct udev_list_entry *item = NULL, *first = NULL;
-        struct udev_enumerate *e;
-        int r;
-
-        assert(m);
-
-        /* 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)
-                return 0;
-
-        e = udev_enumerate_new(m->udev);
-        if (!e) {
-                r = -ENOMEM;
-                goto finish;
-        }
-
-        r = udev_enumerate_add_match_subsystem(e, "input");
-        if (r < 0)
-                goto finish;
-
-        r = udev_enumerate_add_match_tag(e, "power-switch");
-        if (r < 0)
-                goto finish;
-
-        r = udev_enumerate_scan_devices(e);
-        if (r < 0)
-                goto finish;
-
-        first = udev_enumerate_get_list_entry(e);
-        udev_list_entry_foreach(item, first) {
-                struct udev_device *d;
-                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_button_device(m, d);
-                udev_device_unref(d);
-
-                if (k < 0)
-                        r = k;
-        }
-
-finish:
-        if (e)
-                udev_enumerate_unref(e);
-
-        return r;
-}
-
-int manager_enumerate_seats(Manager *m) {
-        DIR *d;
-        struct dirent *de;
-        int r = 0;
-
-        assert(m);
-
-        /* This loads data about seats stored on disk, but does not
-         * actually create any seats. Removes data of seats that no
-         * longer exist. */
-
-        d = opendir("/run/systemd/seats");
-        if (!d) {
-                if (errno == ENOENT)
-                        return 0;
-
-                log_error("Failed to open /run/systemd/seats: %m");
-                return -errno;
-        }
-
-        while ((de = readdir(d))) {
-                Seat *s;
-                int k;
-
-                if (!dirent_is_file(de))
-                        continue;
-
-                s = hashmap_get(m->seats, de->d_name);
-                if (!s) {
-                        unlinkat(dirfd(d), de->d_name, 0);
-                        continue;
-                }
-
-                k = seat_load(s);
-                if (k < 0)
-                        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;
-        struct dirent *de;
-        int r = 0;
-
-        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;
-        }
-
-        while ((de = readdir(d))) {
-                int k;
-
-                if (!dirent_is_file(de))
-                        continue;
-
-                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));
-                        r = k;
-                }
-        }
-
-        closedir(d);
-
-        return r;
-}
-
-int manager_enumerate_users(Manager *m) {
-        DIR *d;
-        struct dirent *de;
-        int r, k;
-
-        assert(m);
-
-        /* First, enumerate user cgroups */
-        r = manager_enumerate_users_from_cgroup(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 */
-        d = opendir("/run/systemd/users");
-        if (!d) {
-                if (errno == ENOENT)
-                        return 0;
-
-                log_error("Failed to open /run/systemd/users: %m");
-                return -errno;
-        }
-
-        while ((de = readdir(d))) {
-                uid_t uid;
-                User *u;
-
-                if (!dirent_is_file(de))
-                        continue;
-
-                k = parse_uid(de->d_name, &uid);
-                if (k < 0) {
-                        log_error("Failed to parse file name %s: %s", de->d_name, strerror(-k));
-                        continue;
-                }
-
-                u = hashmap_get(m->users, ULONG_TO_PTR(uid));
-                if (!u) {
-                        unlinkat(dirfd(d), de->d_name, 0);
-                        continue;
-                }
-
-                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;
-        int r = 0;
-
-        HASHMAP_FOREACH(u, m->users, i) {
-                DIR *d;
-                char *name;
-                int k;
-
-                if (!u->cgroup_path)
-                        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;
-                        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;
-                                }
-
-                        free(name);
-                }
-
-                closedir(d);
-
-                if (k < 0)
-                        r = k;
-        }
-
-        return r;
-}
-
-int manager_enumerate_sessions(Manager *m) {
-        DIR *d;
-        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");
-        if (!d) {
-                if (errno == ENOENT)
-                        return 0;
-
-                log_error("Failed to open /run/systemd/sessions: %m");
-                return -errno;
-        }
-
-        while ((de = readdir(d))) {
-                struct Session *s;
-                int k;
-
-                if (!dirent_is_file(de))
-                        continue;
-
-                s = hashmap_get(m->sessions, de->d_name);
-                if (!s) {
-                        unlinkat(dirfd(d), de->d_name, 0);
-                        continue;
-                }
-
-                k = session_load(s);
-                if (k < 0)
-                        r = k;
-        }
-
-        closedir(d);
-
-        return r;
-}
-
-int manager_enumerate_inhibitors(Manager *m) {
-        DIR *d;
-        struct dirent *de;
-        int r = 0;
-
-        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);
-
-        return r;
-}
-
-int manager_dispatch_seat_udev(Manager *m) {
-        struct udev_device *d;
-        int r;
-
-        assert(m);
-
-        d = udev_monitor_receive_device(m->udev_seat_monitor);
-        if (!d)
-                return -ENOMEM;
-
-        r = manager_process_seat_device(m, d);
-        udev_device_unref(d);
-
-        return r;
-}
-
-int manager_dispatch_vcsa_udev(Manager *m) {
-        struct udev_device *d;
-        int r = 0;
-        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"))
-                r = seat_preallocate_vts(m->vtconsole);
-
-        udev_device_unref(d);
-
-        return r;
-}
-
-int manager_dispatch_button_udev(Manager *m) {
-        struct udev_device *d;
-        int r;
-
-        assert(m);
-
-        d = udev_monitor_receive_device(m->udev_button_monitor);
-        if (!d)
-                return -ENOMEM;
-
-        r = manager_process_button_device(m, d);
-        udev_device_unref(d);
-
-        return r;
-}
-
-int manager_dispatch_console(Manager *m) {
-        assert(m);
-
-        if (m->vtconsole)
-                seat_read_active_vt(m->vtconsole);
-
-        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));
-
-        close_nointr_nofail(fd);
-
-        return r;
-}
-
-int manager_spawn_autovt(Manager *m, int vtnr) {
-        int r;
-        char *name = NULL;
-        const char *mode = "fail";
-
-        assert(m);
-        assert(vtnr >= 1);
-
-        if ((unsigned) vtnr > m->n_autovts &&
-            (unsigned) vtnr != m->reserve_vt)
-                return 0;
-
-        if ((unsigned) vtnr != m->reserve_vt) {
-                /* If this is the reserved TTY, we'll start the getty
-                 * on it in any case, but otherwise only if it is not
-                 * busy. */
-
-                r = vt_is_busy(vtnr);
-                if (r < 0)
-                        return r;
-                else if (r > 0)
-                        return -EBUSY;
-        }
-
-        if (asprintf(&name, "autovt@tty%i.service", vtnr) < 0) {
-                log_error("Could not allocate service name.");
-                r = -ENOMEM;
-                goto finish;
-        }
-
-        r = bus_method_call_with_reply (
-                        m->bus,
-                        "org.freedesktop.systemd1",
-                        "/org/freedesktop/systemd1",
-                        "org.freedesktop.systemd1.Manager",
-                        "StartUnit",
-                        NULL,
-                        NULL,
-                        DBUS_TYPE_STRING, &name,
-                        DBUS_TYPE_STRING, &mode,
-                        DBUS_TYPE_INVALID);
-
-finish:
-        free(name);
-
-        return r;
-}
-
-static int manager_reserve_vt(Manager *m) {
-        _cleanup_free_ char *p = NULL;
-
-        assert(m);
-
-        if (m->reserve_vt <= 0)
-                return 0;
-
-        if (asprintf(&p, "/dev/tty%u", m->reserve_vt) < 0)
-                return log_oom();
-
-        m->reserve_vt_fd = open(p, O_RDWR|O_NOCTTY|O_CLOEXEC|O_NONBLOCK);
-        if (m->reserve_vt_fd < 0) {
-
-                /* Don't complain on VT-less systems */
-                if (errno != ENOENT)
-                        log_warning("Failed to pin reserved VT: %m");
-                return -errno;
-        }
-
-        return 0;
-}
-
-int manager_get_session_by_cgroup(Manager *m, const char *cgroup, Session **session) {
-        Session *s;
-        char *p;
-
-        assert(m);
-        assert(cgroup);
-        assert(session);
-
-        s = hashmap_get(m->session_cgroups, cgroup);
-        if (s) {
-                *session = s;
-                return 1;
-        }
-
-        p = strdup(cgroup);
-        if (!p)
-                return log_oom();
-
-        for (;;) {
-                char *e;
-
-                e = strrchr(p, '/');
-                if (!e || e == p) {
-                        free(p);
-                        *session = NULL;
-                        return 0;
-                }
-
-                *e = 0;
-
-                s = hashmap_get(m->session_cgroups, p);
-                if (s) {
-                        free(p);
-                        *session = s;
-                        return 1;
-                }
-        }
-}
-
-int manager_get_user_by_cgroup(Manager *m, const char *cgroup, User **user) {
-        User *u;
-        char *p;
-
-        assert(m);
-        assert(cgroup);
-        assert(user);
-
-        u = hashmap_get(m->user_cgroups, cgroup);
-        if (u) {
-                *user = u;
-                return 1;
-        }
-
-        p = strdup(cgroup);
-        if (!p)
-                return log_oom();
-
-        for (;;) {
-                char *e;
-
-                e = strrchr(p, '/');
-                if (!e || e == p) {
-                        free(p);
-                        *user = NULL;
-                        return 0;
-                }
-
-                *e = 0;
-
-                u = hashmap_get(m->user_cgroups, p);
-                if (u) {
-                        free(p);
-                        *user = u;
-                        return 1;
-                }
-        }
-}
-
-int manager_get_session_by_pid(Manager *m, pid_t pid, Session **session) {
-        char *p;
-        int r;
-
-        assert(m);
-        assert(pid >= 1);
-        assert(session);
-
-        r = cg_get_by_pid(SYSTEMD_CGROUP_CONTROLLER, pid, &p);
-        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;
-        User *u;
-        int r;
-
-        r = manager_get_session_by_cgroup(m, cgroup, &s);
-        if (r > 0)
-                session_add_to_gc_queue(s);
-
-        r = manager_get_user_by_cgroup(m, cgroup, &u);
-        if (r > 0)
-                user_add_to_gc_queue(u);
-}
-
-static void manager_dispatch_other(Manager *m, int fd) {
-        Session *s;
-        Inhibitor *i;
-        Button *b;
-
-        assert_se(m);
-        assert_se(fd >= 0);
-
-        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;
-        }
-
-        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;
-        }
-
-        b = hashmap_get(m->button_fds, INT_TO_PTR(fd + 1));
-        if (b) {
-                assert(b->fd == fd);
-                button_process(b);
-                return;
-        }
-
-        assert_not_reached("Got event for unknown fd");
-}
-
-static int manager_connect_bus(Manager *m) {
-        DBusError error;
-        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;
-        }
-
-        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)) {
-                r = log_oom();
-                goto fail;
-        }
-
-        dbus_bus_add_match(m->bus,
-                           "type='signal',"
-                           "interface='org.freedesktop.systemd1.Agent',"
-                           "member='Released',"
-                           "path='/org/freedesktop/systemd1/agent'",
-                           &error);
-
-        if (dbus_error_is_set(&error)) {
-                log_error("Failed to register match: %s", bus_error_message(&error));
-                r = -EIO;
-                goto fail;
-        }
-
-        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;
-        }
-
-        if (r != DBUS_REQUEST_NAME_REPLY_PRIMARY_OWNER)  {
-                log_error("Failed to acquire name.");
-                r = -EEXIST;
-                goto fail;
-        }
-
-        m->bus_fd = bus_loop_open(m->bus);
-        if (m->bus_fd < 0) {
-                r = m->bus_fd;
-                goto fail;
-        }
-
-        zero(ev);
-        ev.events = EPOLLIN;
-        ev.data.u32 = FD_BUS;
-
-        if (epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, m->bus_fd, &ev) < 0)
-                goto fail;
-
-        return 0;
-
-fail:
-        dbus_error_free(&error);
-
-        return r;
-}
-
-static int manager_connect_console(Manager *m) {
-        struct epoll_event ev;
-
-        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;
-                return 0;
-        }
-
-        m->console_active_fd = open("/sys/class/tty/tty0/active", O_RDONLY|O_NOCTTY|O_CLOEXEC);
-        if (m->console_active_fd < 0) {
-
-                /* On some systems the device node /dev/tty0 may exist
-                 * even though /sys/class/tty/tty0 does not. */
-                if (errno == ENOENT)
-                        return 0;
-
-                log_error("Failed to open /sys/class/tty/tty0/active: %m");
-                return -errno;
-        }
-
-        zero(ev);
-        ev.events = 0;
-        ev.data.u32 = FD_CONSOLE;
-
-        if (epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, m->console_active_fd, &ev) < 0)
-                return -errno;
-
-        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_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");
-        if (r < 0)
-                return r;
-
-        r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_seat_monitor, "graphics", NULL);
-        if (r < 0)
-                return r;
-
-        r = udev_monitor_enable_receiving(m->udev_seat_monitor);
-        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;
-        if (epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, m->udev_seat_fd, &ev) < 0)
-                return -errno;
-
-        /* 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->udev_button_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
-                if (!m->udev_button_monitor)
-                        return -ENOMEM;
-
-                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;
-
-                m->udev_button_fd = udev_monitor_get_fd(m->udev_button_monitor);
-
-                zero(ev);
-                ev.events = EPOLLIN;
-                ev.data.u32 = FD_BUTTON_UDEV;
-                if (epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, m->udev_button_fd, &ev) < 0)
-                        return -errno;
-        }
-
-        /* 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;
-
-                m->udev_vcsa_fd = udev_monitor_get_fd(m->udev_vcsa_monitor);
-
-                zero(ev);
-                ev.events = EPOLLIN;
-                ev.data.u32 = FD_VCSA_UDEV;
-                if (epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, m->udev_vcsa_fd, &ev) < 0)
-                        return -errno;
-        }
-
-        return 0;
-}
-
-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);
-                seat->in_gc_queue = false;
-
-                if (seat_check_gc(seat, drop_not_started) == 0) {
-                        seat_stop(seat);
-                        seat_free(seat);
-                }
-        }
-
-        while ((session = m->session_gc_queue)) {
-                LIST_REMOVE(Session, gc_queue, m->session_gc_queue, session);
-                session->in_gc_queue = false;
-
-                if (session_check_gc(session, drop_not_started) == 0) {
-                        session_stop(session);
-                        session_free(session);
-                }
-        }
-
-        while ((user = m->user_gc_queue)) {
-                LIST_REMOVE(User, gc_queue, m->user_gc_queue, user);
-                user->in_gc_queue = false;
-
-                if (user_check_gc(user, drop_not_started) == 0) {
-                        user_stop(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;
-
-        assert(m);
-
-        idle_hint = !manager_is_inhibited(m, INHIBIT_IDLE, INHIBIT_BLOCK, t, false, false, 0);
-
-        HASHMAP_FOREACH(s, m->sessions, i) {
-                dual_timestamp k;
-                int ih;
-
-                ih = session_get_idle_hint(s, &k);
-                if (ih < 0)
-                        return ih;
-
-                if (!ih) {
-                        if (!idle_hint) {
-                                if (k.monotonic < ts.monotonic)
-                                        ts = k;
-                        } else {
-                                idle_hint = false;
-                                ts = k;
-                        }
-                } else if (idle_hint) {
-
-                        if (k.monotonic > ts.monotonic)
-                                ts = k;
-                }
-        }
-
-        if (t)
-                *t = ts;
-
-        return idle_hint;
-}
-
-int manager_startup(Manager *m) {
-        int r;
-        Seat *seat;
-        Session *session;
-        User *user;
-        Inhibitor *inhibitor;
-        Iterator i;
-
-        assert(m);
-        assert(m->epoll_fd <= 0);
-
-        cg_shorten_controllers(m->reset_controllers);
-        cg_shorten_controllers(m->controllers);
-
-        m->epoll_fd = epoll_create1(EPOLL_CLOEXEC);
-        if (m->epoll_fd < 0)
-                return -errno;
-
-        /* Connect to console */
-        r = manager_connect_console(m);
-        if (r < 0)
-                return r;
-
-        /* Connect to udev */
-        r = manager_connect_udev(m);
-        if (r < 0)
-                return r;
-
-        /* Connect to the bus */
-        r = manager_connect_bus(m);
-        if (r < 0)
-                return r;
-
-        /* Instantiate magic seat 0 */
-        r = manager_add_seat(m, "seat0", &m->vtconsole);
-        if (r < 0)
-                return r;
-
-        /* Deserialize state */
-        manager_enumerate_devices(m);
-        manager_enumerate_seats(m);
-        manager_enumerate_users(m);
-        manager_enumerate_sessions(m);
-        manager_enumerate_inhibitors(m);
-        manager_enumerate_buttons(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);
-
-        HASHMAP_FOREACH(user, m->users, i)
-                user_start(user);
-
-        HASHMAP_FOREACH(session, m->sessions, i)
-                session_start(session);
-
-        HASHMAP_FOREACH(inhibitor, m->inhibitors, i)
-                inhibitor_start(inhibitor);
-
-        return 0;
-}
-
-static int manager_recheck_buttons(Manager *m) {
-        Iterator i;
-        Button *b;
-        int r = 0;
-
-        assert(m);
-
-        HASHMAP_FOREACH(b, m->buttons, i) {
-                int q;
-
-                q = button_recheck(b);
-                if (q > 0)
-                        return 1;
-                if (q < 0)
-                        r = q;
-        }
-
-        return r;
-}
-
-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 (manager_recheck_buttons(m) > 0)
-                        continue;
-
-                if (dbus_connection_dispatch(m->bus) != DBUS_DISPATCH_COMPLETE)
-                        continue;
-
-                manager_gc(m, true);
-
-                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_BUTTON_UDEV:
-                        manager_dispatch_button_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_OTHER_BASE)
-                                manager_dispatch_other(m, event.data.u32 - FD_OTHER_BASE);
-                }
-        }
-
-        return 0;
-}
-
-static int manager_parse_config_file(Manager *m) {
-        FILE *f;
-        const char *fn;
-        int r;
-
-        assert(m);
-
-        fn = "/etc/systemd/logind.conf";
-        f = fopen(fn, "re");
-        if (!f) {
-                if (errno == ENOENT)
-                        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));
-
-        fclose(f);
-
-        return r;
-}
-
-int main(int argc, char *argv[]) {
-        Manager *m = NULL;
-        int r;
-
-        log_set_target(LOG_TARGET_AUTO);
-        log_set_facility(LOG_AUTH);
-        log_parse_environment();
-        log_open();
-
-        umask(0022);
-
-        if (argc != 1) {
-                log_error("This program takes no arguments.");
-                r = -EINVAL;
-                goto finish;
-        }
-
-        m = manager_new();
-        if (!m) {
-                r = log_oom();
-                goto finish;
-        }
-
-        manager_parse_config_file(m);
-
-        r = manager_startup(m);
-        if (r < 0) {
-                log_error("Failed to fully start up daemon: %s", strerror(-r));
-                goto finish;
-        }
-
-        log_debug("systemd-logind running as pid %lu", (unsigned long) getpid());
-
-        sd_notify(false,
-                  "READY=1\n"
-                  "STATUS=Processing requests...");
-
-        r = manager_run(m);
-
-        log_debug("systemd-logind stopped as pid %lu", (unsigned long) getpid());
-
-finish:
-        sd_notify(false,
-                  "STATUS=Shutting down...");
-
-        if (m)
-                manager_free(m);
-
-        return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
-}