logind: use pipe fd to detect when a session is dead

[thirdparty/systemd.git] / src / logind.h

/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/

#ifndef foologindhfoo
#define foologindhfoo

/***
  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 General Public License as published by
  the Free Software Foundation; either version 2 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
  General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/

#include <stdbool.h>
#include <inttypes.h>
#include <dbus/dbus.h>
#include <libudev.h>

#include "util.h"
#include "list.h"
#include "hashmap.h"
#include "cgroup-util.h"

/* TODO:
 *
 * recreate VTs when disallocated
 * spawn user systemd
 * direct client API
 * D-Bus method: AttachDevice(seat, device);
 * D-Bus method: SetLinger(user, bool b);
 *
 * non-local X11 server
 * reboot/shutdown halt management
 */

typedef struct Manager Manager;

#include "logind-device.h"
#include "logind-seat.h"
#include "logind-session.h"
#include "logind-user.h"

struct Manager {
        DBusConnection *bus;

        Hashmap *devices;
        Hashmap *seats;
        Hashmap *sessions;
        Hashmap *users;

        LIST_HEAD(Seat, seat_gc_queue);
        LIST_HEAD(Session, session_gc_queue);
        LIST_HEAD(User, user_gc_queue);

        struct udev *udev;
        struct udev_monitor *udev_monitor;

        int udev_fd;
        int console_active_fd;
        int bus_fd;
        int epoll_fd;

        unsigned n_autovts;

        Seat *vtconsole;

        char *cgroup_path;
        char **controllers;

        char **kill_only_users, **kill_exclude_users;

        bool kill_user_processes;

        unsigned long session_counter;

        Hashmap *cgroups;
        Hashmap *pipe_fds;
};

enum {
        FD_UDEV,
        FD_CONSOLE,
        FD_BUS,
        FD_PIPE_BASE
};

Manager *manager_new(void);
void manager_free(Manager *m);

int manager_add_device(Manager *m, const char *sysfs, Device **_device);
int manager_add_seat(Manager *m, const char *id, Seat **_seat);
int manager_add_session(Manager *m, User *u, const char *id, Session **_session);
int manager_add_user(Manager *m, uid_t uid, gid_t gid, const char *name, User **_user);
int manager_add_user_by_name(Manager *m, const char *name, User **_user);
int manager_add_user_by_uid(Manager *m, uid_t uid, User **_user);

int manager_process_device(Manager *m, struct udev_device *d);
int manager_dispatch_udev(Manager *m);
int manager_dispatch_console(Manager *m);

int manager_enumerate_devices(Manager *m);
int manager_enumerate_seats(Manager *m);
int manager_enumerate_sessions(Manager *m);
int manager_enumerate_users(Manager *m);

int manager_startup(Manager *m);
int manager_run(Manager *m);
int manager_spawn_autovt(Manager *m, int vtnr);

void manager_cgroup_notify_empty(Manager *m, const char *cgroup);

void manager_gc(Manager *m);

int manager_get_idle_hint(Manager *m, dual_timestamp *t);

bool x11_display_is_local(const char *display);

extern const DBusObjectPathVTable bus_manager_vtable;

DBusHandlerResult bus_message_filter(DBusConnection *c, DBusMessage *message, void *userdata);

int manager_send_changed(Manager *manager, const char *properties);

#endif