./move.sh

1 files changed, 288 insertions, 0 deletions

diff --git a/src/grp-login/logind-button.c b/src/grp-login/logind-button.c
new file mode 100644
index 0000000000..acf7504a2e
--- /dev/null
+++ b/src/grp-login/logind-button.c
@@ -0,0 +1,288 @@
+/***
+  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 <errno.h>
+#include <fcntl.h>
+#include <string.h>
+#include <sys/ioctl.h>
+#include <unistd.h>
+#include <linux/input.h>
+
+#include <systemd/sd-messages.h>
+
+#include "alloc-util.h"
+#include "fd-util.h"
+#include "logind-button.h"
+#include "string-util.h"
+#include "util.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);
+
+        sd_event_source_unref(b->io_event_source);
+        sd_event_source_unref(b->check_event_source);
+
+        if (b->fd >= 0)
+                /* If the device has been unplugged close() returns
+                 * ENODEV, let's ignore this, hence we don't use
+                 * safe_close() */
+                (void) close(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;
+}
+
+static void button_lid_switch_handle_action(Manager *manager, bool is_edge) {
+        HandleAction handle_action;
+
+        assert(manager);
+
+        /* If we are docked, handle the lid switch differently */
+        if (manager_is_docked_or_external_displays(manager))
+                handle_action = manager->handle_lid_switch_docked;
+        else
+                handle_action = manager->handle_lid_switch;
+
+        manager_handle_action(manager, INHIBIT_HANDLE_LID_SWITCH, handle_action, manager->lid_switch_ignore_inhibited, is_edge);
+}
+
+static int button_recheck(sd_event_source *e, void *userdata) {
+        Button *b = userdata;
+
+        assert(b);
+        assert(b->lid_closed);
+
+        button_lid_switch_handle_action(b->manager, false);
+        return 1;
+}
+
+static int button_install_check_event_source(Button *b) {
+        int r;
+        assert(b);
+
+        /* Install a post handler, so that we keep rechecking as long as the lid is closed. */
+
+        if (b->check_event_source)
+                return 0;
+
+        r = sd_event_add_post(b->manager->event, &b->check_event_source, button_recheck, b);
+        if (r < 0)
+                return r;
+
+        return sd_event_source_set_priority(b->check_event_source, SD_EVENT_PRIORITY_IDLE+1);
+}
+
+static int button_dispatch(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
+        Button *b = userdata;
+        struct input_event ev;
+        ssize_t l;
+
+        assert(s);
+        assert(fd == b->fd);
+        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 (ev.type == EV_KEY && ev.value > 0) {
+
+                switch (ev.code) {
+
+                case KEY_POWER:
+                case KEY_POWER2:
+                        log_struct(LOG_INFO,
+                                   LOG_MESSAGE("Power key pressed."),
+                                   LOG_MESSAGE_ID(SD_MESSAGE_POWER_KEY),
+                                   NULL);
+
+                        manager_handle_action(b->manager, INHIBIT_HANDLE_POWER_KEY, b->manager->handle_power_key, b->manager->power_key_ignore_inhibited, true);
+                        break;
+
+                /* The kernel is a bit confused here:
+
+                   KEY_SLEEP   = suspend-to-ram, which everybody else calls "suspend"
+                   KEY_SUSPEND = suspend-to-disk, which everybody else calls "hibernate"
+                */
+
+                case KEY_SLEEP:
+                        log_struct(LOG_INFO,
+                                   LOG_MESSAGE("Suspend key pressed."),
+                                   LOG_MESSAGE_ID(SD_MESSAGE_SUSPEND_KEY),
+                                   NULL);
+
+                        manager_handle_action(b->manager, INHIBIT_HANDLE_SUSPEND_KEY, b->manager->handle_suspend_key, b->manager->suspend_key_ignore_inhibited, true);
+                        break;
+
+                case KEY_SUSPEND:
+                        log_struct(LOG_INFO,
+                                   LOG_MESSAGE("Hibernate key pressed."),
+                                   LOG_MESSAGE_ID(SD_MESSAGE_HIBERNATE_KEY),
+                                   NULL);
+
+                        manager_handle_action(b->manager, INHIBIT_HANDLE_HIBERNATE_KEY, b->manager->handle_hibernate_key, b->manager->hibernate_key_ignore_inhibited, true);
+                        break;
+                }
+
+        } else if (ev.type == EV_SW && ev.value > 0) {
+
+                if (ev.code == SW_LID) {
+                        log_struct(LOG_INFO,
+                                   LOG_MESSAGE("Lid closed."),
+                                   LOG_MESSAGE_ID(SD_MESSAGE_LID_CLOSED),
+                                   NULL);
+
+                        b->lid_closed = true;
+                        button_lid_switch_handle_action(b->manager, true);
+                        button_install_check_event_source(b);
+
+                } else if (ev.code == SW_DOCK) {
+                        log_struct(LOG_INFO,
+                                   LOG_MESSAGE("System docked."),
+                                   LOG_MESSAGE_ID(SD_MESSAGE_SYSTEM_DOCKED),
+                                   NULL);
+
+                        b->docked = true;
+                }
+
+        } else if (ev.type == EV_SW && ev.value == 0) {
+
+                if (ev.code == SW_LID) {
+                        log_struct(LOG_INFO,
+                                   LOG_MESSAGE("Lid opened."),
+                                   LOG_MESSAGE_ID(SD_MESSAGE_LID_OPENED),
+                                   NULL);
+
+                        b->lid_closed = false;
+                        b->check_event_source = sd_event_source_unref(b->check_event_source);
+
+                } else if (ev.code == SW_DOCK) {
+                        log_struct(LOG_INFO,
+                                   LOG_MESSAGE("System undocked."),
+                                   LOG_MESSAGE_ID(SD_MESSAGE_SYSTEM_UNDOCKED),
+                                   NULL);
+
+                        b->docked = false;
+                }
+        }
+
+        return 0;
+}
+
+int button_open(Button *b) {
+        char *p, name[256];
+        int r;
+
+        assert(b);
+
+        b->fd = safe_close(b->fd);
+
+        p = strjoina("/dev/input/", b->name);
+
+        b->fd = open(p, O_RDWR|O_CLOEXEC|O_NOCTTY|O_NONBLOCK);
+        if (b->fd < 0)
+                return log_warning_errno(errno, "Failed to open %s: %m", b->name);
+
+        if (ioctl(b->fd, EVIOCGNAME(sizeof(name)), name) < 0) {
+                r = log_error_errno(errno, "Failed to get input name: %m");
+                goto fail;
+        }
+
+        r = sd_event_add_io(b->manager->event, &b->io_event_source, b->fd, EPOLLIN, button_dispatch, b);
+        if (r < 0) {
+                log_error_errno(r, "Failed to add button event: %m");
+                goto fail;
+        }
+
+        log_info("Watching system buttons on /dev/input/%s (%s)", b->name, name);
+
+        return 0;
+
+fail:
+        b->fd = safe_close(b->fd);
+        return r;
+}
+
+int button_check_switches(Button *b) {
+        uint8_t switches[SW_MAX/8+1] = {};
+        assert(b);
+
+        if (b->fd < 0)
+                return -EINVAL;
+
+        if (ioctl(b->fd, EVIOCGSW(sizeof(switches)), switches) < 0)
+                return -errno;
+
+        b->lid_closed = (switches[SW_LID/8] >> (SW_LID % 8)) & 1;
+        b->docked = (switches[SW_DOCK/8] >> (SW_DOCK % 8)) & 1;
+
+        if (b->lid_closed)
+                button_install_check_event_source(b);
+
+        return 0;
+}