From e9d21f240704f87c6bb5f7fca1c5e6d0f31c84cd Mon Sep 17 00:00:00 2001 From: Lennart Poettering Date: Wed, 30 May 2012 15:07:19 +0200 Subject: [PATCH] logind: add missing files --- src/login/70-power-switch.rules | 13 ++ src/login/logind-button.c | 295 ++++++++++++++++++++++++++++++++ src/login/logind-button.h | 58 +++++++ 3 files changed, 366 insertions(+) create mode 100644 src/login/70-power-switch.rules create mode 100644 src/login/logind-button.c create mode 100644 src/login/logind-button.h diff --git a/src/login/70-power-switch.rules b/src/login/70-power-switch.rules new file mode 100644 index 00000000..90959232 --- /dev/null +++ b/src/login/70-power-switch.rules @@ -0,0 +1,13 @@ +# 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" diff --git a/src/login/logind-button.c b/src/login/logind-button.c new file mode 100644 index 00000000..48432e19 --- /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 . +***/ + +#include +#include +#include +#include +#include +#include +#include +#include + +#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"); diff --git a/src/login/logind-button.h b/src/login/logind-button.h new file mode 100644 index 00000000..03782113 --- /dev/null +++ b/src/login/logind-button.h @@ -0,0 +1,58 @@ +/*-*- 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 . +***/ + +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 -- 2.39.5