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logind: add missing files

This commit is contained in:
Lennart Poettering 2012-05-30 15:07:19 +02:00
parent eb26728931
commit e9d21f2407
3 changed files with 366 additions and 0 deletions

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# This file is part of systemd.
#
# 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.
ACTION=="remove", GOTO "power_switch_end"
SUBSYSTEM=="input", KERNEL=="event*", SUBSYSTEMS=="acpi", TAG+="power-switch"
SUBSYSTEM=="input", KERNEL=="event*", KERNELS=="thinkpad_acpi", TAG+="power-switch"
LABEL="power_switch_end"

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src/login/logind-button.c Normal file
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/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
/***
This file is part of systemd.
Copyright 2012 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 <assert.h>
#include <string.h>
#include <errno.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <unistd.h>
#include <linux/input.h>
#include <sys/epoll.h>
#include "conf-parser.h"
#include "util.h"
#include "logind-button.h"
#include "special.h"
#include "dbus-common.h"
Button* button_new(Manager *m, const char *name) {
Button *b;
assert(m);
assert(name);
b = new0(Button, 1);
if (!b)
return NULL;
b->name = strdup(name);
if (!b->name) {
free(b);
return NULL;
}
if (hashmap_put(m->buttons, b->name, b) < 0) {
free(b->name);
free(b);
return NULL;
}
b->manager = m;
b->fd = -1;
return b;
}
void button_free(Button *b) {
assert(b);
hashmap_remove(b->manager->buttons, b->name);
if (b->fd >= 0) {
hashmap_remove(b->manager->button_fds, INT_TO_PTR(b->fd + 1));
assert_se(epoll_ctl(b->manager->epoll_fd, EPOLL_CTL_DEL, b->fd, NULL) == 0);
close_nointr_nofail(b->fd);
}
free(b->name);
free(b->seat);
free(b);
}
int button_set_seat(Button *b, const char *sn) {
char *s;
assert(b);
assert(sn);
s = strdup(sn);
if (!s)
return -ENOMEM;
free(b->seat);
b->seat = s;
return 0;
}
int button_open(Button *b) {
char name[256], *p;
struct epoll_event ev;
int r;
assert(b);
if (b->fd >= 0) {
close_nointr_nofail(b->fd);
b->fd = -1;
}
p = strappend("/dev/input/", b->name);
if (!p) {
log_error("Out of memory");
return -ENOMEM;
}
b->fd = open(p, O_RDWR|O_CLOEXEC|O_NOCTTY|O_NONBLOCK);
free(p);
if (b->fd < 0) {
log_warning("Failed to open %s: %m", b->name);
return -errno;
}
if (ioctl(b->fd, EVIOCGNAME(sizeof(name)), name) < 0) {
log_error("Failed to get input name: %m");
r = -errno;
goto fail;
}
zero(ev);
ev.events = EPOLLIN;
ev.data.u32 = FD_OTHER_BASE + b->fd;
if (epoll_ctl(b->manager->epoll_fd, EPOLL_CTL_ADD, b->fd, &ev) < 0) {
log_error("Failed to add to epoll: %m");
r = -errno;
goto fail;
}
r = hashmap_put(b->manager->button_fds, INT_TO_PTR(b->fd + 1), b);
if (r < 0) {
log_error("Failed to add to hash map: %s", strerror(-r));
assert_se(epoll_ctl(b->manager->epoll_fd, EPOLL_CTL_DEL, b->fd, NULL) == 0);
goto fail;
}
log_info("Watching system buttons on /dev/input/%s (%s)", b->name, name);
return 0;
fail:
close_nointr_nofail(b->fd);
b->fd = -1;
return r;
}
static bool has_graphical_session(Manager *m, const char *seat) {
Seat *s;
assert(m);
assert(seat);
s = hashmap_get(m->seats, seat);
if (!s)
return false;
if (!s->active)
return false;
return s->active->type == SESSION_X11;
}
static int button_power_off(Button *b, HandleButton handle) {
DBusError error;
int r;
assert(b);
if (handle == HANDLE_NO)
return 0;
if (handle != HANDLE_ALWAYS) {
if (hashmap_size(b->manager->sessions) > 0) {
log_error("Refusing power-off, user is logged in.");
warn_melody();
return -EPERM;
}
if (manager_is_inhibited(b->manager, INHIBIT_SHUTDOWN, INHIBIT_BLOCK, NULL)) {
log_error("Refusing power-off, shutdown is inhibited.");
warn_melody();
return -EPERM;
}
}
log_info("Powering off...");
dbus_error_init(&error);
r = bus_manager_shutdown_or_sleep_now_or_later(b->manager, SPECIAL_POWEROFF_TARGET, INHIBIT_SHUTDOWN, &error);
if (r < 0) {
log_error("Failed to power off: %s", bus_error_message(&error));
dbus_error_free(&error);
}
return r;
}
static int button_suspend(Button *b, HandleButton handle) {
DBusError error;
int r;
assert(b);
if (handle == HANDLE_NO)
return 0;
if (handle != HANDLE_ALWAYS) {
if (hashmap_size(b->manager->sessions) > 0) {
log_error("Refusing suspend, user is logged in.");
warn_melody();
return -EPERM;
}
if (manager_is_inhibited(b->manager, INHIBIT_SLEEP, INHIBIT_BLOCK, NULL)) {
log_error("Refusing suspend, sleeping is inhibited.");
warn_melody();
return -EPERM;
}
}
log_info("Suspending...");
dbus_error_init(&error);
r = bus_manager_shutdown_or_sleep_now_or_later(b->manager, SPECIAL_SUSPEND_TARGET, INHIBIT_SLEEP, &error);
if (r < 0) {
log_error("Failed to suspend: %s", bus_error_message(&error));
dbus_error_free(&error);
}
return r;
}
int button_process(Button *b) {
struct input_event ev;
ssize_t l;
assert(b);
l = read(b->fd, &ev, sizeof(ev));
if (l < 0)
return errno != EAGAIN ? -errno : 0;
if ((size_t) l < sizeof(ev))
return -EIO;
/* If there's a graphical session on the seat this device
* belongs to we ignore events, it is job of the graphical
* session to handle the event. */
if (has_graphical_session(b->manager, b->seat))
return 0;
if (ev.type == EV_KEY && ev.value > 0) {
switch (ev.code) {
case KEY_POWER:
case KEY_POWER2:
log_info("Power key pressed.");
return button_power_off(b, b->manager->handle_power_key);
case KEY_SLEEP:
case KEY_SUSPEND:
log_info("Sleep key pressed.");
return button_suspend(b, b->manager->handle_sleep_key);
}
} else if (ev.type == EV_SW && ev.value > 0) {
switch (ev.code) {
case SW_LID:
log_info("Lid closed.");
return button_suspend(b, b->manager->handle_lid_switch);
}
}
return 0;
}
static const char* const handle_button_table[_HANDLE_BUTTON_MAX] = {
[HANDLE_YES] = "yes",
[HANDLE_NO] = "no",
[HANDLE_ALWAYS] = "always"
};
DEFINE_STRING_TABLE_LOOKUP(handle_button, HandleButton);
DEFINE_CONFIG_PARSE_ENUM(config_parse_handle_button, handle_button, HandleButton, "Failed to parse handle button setting");

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src/login/logind-button.h Normal file
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/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
#ifndef foologindbuttonhfoo
#define foologindbuttonhfoo
/***
This file is part of systemd.
Copyright 2012 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/>.
***/
typedef struct Button Button;
typedef enum HandleButton {
HANDLE_NO,
HANDLE_YES, /* only if no inhibitor is taken/no session is around */
HANDLE_ALWAYS, /* regardless if inhibitor is taken/session is around */
_HANDLE_BUTTON_MAX,
_HANDLE_BUTTON_INVALID = -1
} HandleButton;
#include "list.h"
#include "util.h"
#include "logind.h"
struct Button {
Manager *manager;
char *name;
char *seat;
int fd;
};
Button* button_new(Manager *m, const char *name);
void button_free(Button*b);
int button_open(Button *b);
int button_process(Button *b);
int button_set_seat(Button *b, const char *sn);
const char* handle_button_to_string(HandleButton h);
HandleButton handle_button_from_string(const char *s);
int config_parse_handle_button(const char *filename, unsigned line, const char *section, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
#endif