logind: add missing files

1 files changed, 295 insertions, 0 deletions

diff --git a/src/login/logind-button.c b/src/login/logind-button.c
new file mode 100644
index 0000000000..48432e195d
--- /dev/null
+++ b/src/login/logind-button.c
@@ -0,0 +1,295 @@
+/*-*- 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");