diff options
Diffstat (limited to 'src/login/logind-action.c')
| -rw-r--r-- | src/login/logind-action.c | 331 |
1 files changed, 331 insertions, 0 deletions
diff --git a/src/login/logind-action.c b/src/login/logind-action.c new file mode 100644 index 0000000..8269f52 --- /dev/null +++ b/src/login/logind-action.c @@ -0,0 +1,331 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ + +#include <unistd.h> + +#include "sd-messages.h" + +#include "alloc-util.h" +#include "bus-error.h" +#include "bus-util.h" +#include "conf-parser.h" +#include "format-util.h" +#include "logind-action.h" +#include "logind-dbus.h" +#include "logind-session-dbus.h" +#include "process-util.h" +#include "special.h" +#include "string-table.h" +#include "terminal-util.h" +#include "user-util.h" + +static const HandleActionData handle_action_data_table[_HANDLE_ACTION_MAX] = { + [HANDLE_POWEROFF] = { + .handle = HANDLE_POWEROFF, + .target = SPECIAL_POWEROFF_TARGET, + .inhibit_what = INHIBIT_SHUTDOWN, + .polkit_action = "org.freedesktop.login1.power-off", + .polkit_action_multiple_sessions = "org.freedesktop.login1.power-off-multiple-sessions", + .polkit_action_ignore_inhibit = "org.freedesktop.login1.power-off-ignore-inhibit", + .sleep_operation = _SLEEP_OPERATION_INVALID, + .message_id = SD_MESSAGE_SHUTDOWN_STR, + .message = "System is powering down", + .log_verb = "power-off", + }, + [HANDLE_REBOOT] = { + .handle = HANDLE_REBOOT, + .target = SPECIAL_REBOOT_TARGET, + .inhibit_what = INHIBIT_SHUTDOWN, + .polkit_action = "org.freedesktop.login1.reboot", + .polkit_action_multiple_sessions = "org.freedesktop.login1.reboot-multiple-sessions", + .polkit_action_ignore_inhibit = "org.freedesktop.login1.reboot-ignore-inhibit", + .sleep_operation = _SLEEP_OPERATION_INVALID, + .message_id = SD_MESSAGE_SHUTDOWN_STR, + .message = "System is rebooting", + .log_verb = "reboot", + }, + [HANDLE_HALT] = { + .handle = HANDLE_HALT, + .target = SPECIAL_HALT_TARGET, + .inhibit_what = INHIBIT_SHUTDOWN, + .polkit_action = "org.freedesktop.login1.halt", + .polkit_action_multiple_sessions = "org.freedesktop.login1.halt-multiple-sessions", + .polkit_action_ignore_inhibit = "org.freedesktop.login1.halt-ignore-inhibit", + .sleep_operation = _SLEEP_OPERATION_INVALID, + .message_id = SD_MESSAGE_SHUTDOWN_STR, + .message = "System is halting", + .log_verb = "halt", + }, + [HANDLE_KEXEC] = { + .handle = HANDLE_KEXEC, + .target = SPECIAL_KEXEC_TARGET, + .inhibit_what = INHIBIT_SHUTDOWN, + .polkit_action = "org.freedesktop.login1.reboot", + .polkit_action_multiple_sessions = "org.freedesktop.login1.reboot-multiple-sessions", + .polkit_action_ignore_inhibit = "org.freedesktop.login1.reboot-ignore-inhibit", + .sleep_operation = _SLEEP_OPERATION_INVALID, + .message_id = SD_MESSAGE_SHUTDOWN_STR, + .message = "System is rebooting with kexec", + .log_verb = "kexec", + }, + [HANDLE_SOFT_REBOOT] = { + .handle = HANDLE_SOFT_REBOOT, + .target = SPECIAL_SOFT_REBOOT_TARGET, + .inhibit_what = INHIBIT_SHUTDOWN, + .polkit_action = "org.freedesktop.login1.reboot", + .polkit_action_multiple_sessions = "org.freedesktop.login1.reboot-multiple-sessions", + .polkit_action_ignore_inhibit = "org.freedesktop.login1.reboot-ignore-inhibit", + .sleep_operation = _SLEEP_OPERATION_INVALID, + .message_id = SD_MESSAGE_SHUTDOWN_STR, + .message = "System userspace is rebooting", + .log_verb = "soft-reboot", + }, + [HANDLE_SUSPEND] = { + .handle = HANDLE_SUSPEND, + .target = SPECIAL_SUSPEND_TARGET, + .inhibit_what = INHIBIT_SLEEP, + .polkit_action = "org.freedesktop.login1.suspend", + .polkit_action_multiple_sessions = "org.freedesktop.login1.suspend-multiple-sessions", + .polkit_action_ignore_inhibit = "org.freedesktop.login1.suspend-ignore-inhibit", + .sleep_operation = SLEEP_SUSPEND, + }, + [HANDLE_HIBERNATE] = { + .handle = HANDLE_HIBERNATE, + .target = SPECIAL_HIBERNATE_TARGET, + .inhibit_what = INHIBIT_SLEEP, + .polkit_action = "org.freedesktop.login1.hibernate", + .polkit_action_multiple_sessions = "org.freedesktop.login1.hibernate-multiple-sessions", + .polkit_action_ignore_inhibit = "org.freedesktop.login1.hibernate-ignore-inhibit", + .sleep_operation = SLEEP_HIBERNATE, + }, + [HANDLE_HYBRID_SLEEP] = { + .handle = HANDLE_HYBRID_SLEEP, + .target = SPECIAL_HYBRID_SLEEP_TARGET, + .inhibit_what = INHIBIT_SLEEP, + .polkit_action = "org.freedesktop.login1.hibernate", + .polkit_action_multiple_sessions = "org.freedesktop.login1.hibernate-multiple-sessions", + .polkit_action_ignore_inhibit = "org.freedesktop.login1.hibernate-ignore-inhibit", + .sleep_operation = SLEEP_HYBRID_SLEEP, + }, + [HANDLE_SUSPEND_THEN_HIBERNATE] = { + .handle = HANDLE_SUSPEND_THEN_HIBERNATE, + .target = SPECIAL_SUSPEND_THEN_HIBERNATE_TARGET, + .inhibit_what = INHIBIT_SLEEP, + .polkit_action = "org.freedesktop.login1.hibernate", + .polkit_action_multiple_sessions = "org.freedesktop.login1.hibernate-multiple-sessions", + .polkit_action_ignore_inhibit = "org.freedesktop.login1.hibernate-ignore-inhibit", + .sleep_operation = SLEEP_SUSPEND_THEN_HIBERNATE, + }, + [HANDLE_FACTORY_RESET] = { + .handle = HANDLE_FACTORY_RESET, + .target = SPECIAL_FACTORY_RESET_TARGET, + .inhibit_what = _INHIBIT_WHAT_INVALID, + .sleep_operation = _SLEEP_OPERATION_INVALID, + .message_id = SD_MESSAGE_FACTORY_RESET_STR, + .message = "System is performing factory reset", + }, +}; + +const HandleActionData* handle_action_lookup(HandleAction action) { + + if (action < 0 || (size_t) action >= ELEMENTSOF(handle_action_data_table)) + return NULL; + + return &handle_action_data_table[action]; +} + +static int handle_action_execute( + Manager *m, + HandleAction handle, + bool ignore_inhibited, + bool is_edge) { + + static const char * const message_table[_HANDLE_ACTION_MAX] = { + [HANDLE_POWEROFF] = "Powering off...", + [HANDLE_REBOOT] = "Rebooting...", + [HANDLE_HALT] = "Halting...", + [HANDLE_KEXEC] = "Rebooting via kexec...", + [HANDLE_SOFT_REBOOT] = "Rebooting userspace...", + [HANDLE_SUSPEND] = "Suspending...", + [HANDLE_HIBERNATE] = "Hibernating...", + [HANDLE_HYBRID_SLEEP] = "Hibernating and suspending...", + [HANDLE_SUSPEND_THEN_HIBERNATE] = "Suspending, then hibernating...", + [HANDLE_FACTORY_RESET] = "Performing factory reset...", + }; + + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + InhibitWhat inhibit_operation; + Inhibitor *offending = NULL; + int r; + + assert(m); + + if (handle == HANDLE_KEXEC && access(KEXEC, X_OK) < 0) + return log_warning_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), + "Requested %s operation not supported, ignoring.", handle_action_to_string(handle)); + + if (m->delayed_action) + return log_debug_errno(SYNTHETIC_ERRNO(EALREADY), + "Action %s already in progress, ignoring requested %s operation.", + handle_action_to_string(m->delayed_action->handle), + handle_action_to_string(handle)); + + inhibit_operation = handle_action_lookup(handle)->inhibit_what; + + /* If the actual operation is inhibited, warn and fail */ + if (inhibit_what_is_valid(inhibit_operation) && + !ignore_inhibited && + manager_is_inhibited(m, inhibit_operation, INHIBIT_BLOCK, NULL, false, false, 0, &offending)) { + _cleanup_free_ char *comm = NULL, *u = NULL; + + (void) pidref_get_comm(&offending->pid, &comm); + u = uid_to_name(offending->uid); + + /* If this is just a recheck of the lid switch then don't warn about anything */ + log_full(is_edge ? LOG_ERR : LOG_DEBUG, + "Refusing %s operation, %s is inhibited by UID "UID_FMT"/%s, PID "PID_FMT"/%s.", + handle_action_to_string(handle), + inhibit_what_to_string(inhibit_operation), + offending->uid, strna(u), + offending->pid.pid, strna(comm)); + + return is_edge ? -EPERM : 0; + } + + log_info("%s", message_table[handle]); + + r = bus_manager_shutdown_or_sleep_now_or_later(m, handle_action_lookup(handle), &error); + if (r < 0) + return log_error_errno(r, "Failed to execute %s operation: %s", + handle_action_to_string(handle), + bus_error_message(&error, r)); + + return 1; +} + +static int handle_action_sleep_execute( + Manager *m, + HandleAction handle, + bool ignore_inhibited, + bool is_edge) { + + bool supported; + + assert(m); + assert(HANDLE_ACTION_IS_SLEEP(handle)); + + if (handle == HANDLE_SUSPEND) + supported = sleep_supported(SLEEP_SUSPEND) > 0; + else if (handle == HANDLE_HIBERNATE) + supported = sleep_supported(SLEEP_HIBERNATE) > 0; + else if (handle == HANDLE_HYBRID_SLEEP) + supported = sleep_supported(SLEEP_HYBRID_SLEEP) > 0; + else if (handle == HANDLE_SUSPEND_THEN_HIBERNATE) + supported = sleep_supported(SLEEP_SUSPEND_THEN_HIBERNATE) > 0; + else + assert_not_reached(); + + if (!supported && handle != HANDLE_SUSPEND) { + supported = sleep_supported(SLEEP_SUSPEND) > 0; + if (supported) { + log_notice("Requested %s operation is not supported, using regular suspend instead.", + handle_action_to_string(handle)); + handle = HANDLE_SUSPEND; + } + } + + if (!supported) + return log_warning_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), + "Requested %s operation not supported, ignoring.", handle_action_to_string(handle)); + + return handle_action_execute(m, handle, ignore_inhibited, is_edge); +} + +int manager_handle_action( + Manager *m, + InhibitWhat inhibit_key, + HandleAction handle, + bool ignore_inhibited, + bool is_edge) { + + assert(m); + assert(handle_action_valid(handle)); + + /* If the key handling is turned off, don't do anything */ + if (handle == HANDLE_IGNORE) { + log_debug("Handling of %s (%s) is disabled, taking no action.", + inhibit_key == 0 ? "idle timeout" : inhibit_what_to_string(inhibit_key), + is_edge ? "edge" : "level"); + return 0; + } + + if (inhibit_key == INHIBIT_HANDLE_LID_SWITCH) { + /* If the last system suspend or startup is too close, let's not suspend for now, to give + * USB docking stations some time to settle so that we can properly watch its displays. */ + if (m->lid_switch_ignore_event_source) { + log_debug("Ignoring lid switch request, system startup or resume too close."); + return 0; + } + } + + /* If the key handling is inhibited, don't do anything */ + if (inhibit_key > 0) { + if (manager_is_inhibited(m, inhibit_key, INHIBIT_BLOCK, NULL, true, false, 0, NULL)) { + log_debug("Refusing %s operation, %s is inhibited.", + handle_action_to_string(handle), + inhibit_what_to_string(inhibit_key)); + return 0; + } + } + + /* Locking is handled differently from the rest. */ + if (handle == HANDLE_LOCK) { + if (!is_edge) + return 0; + + log_info("Locking sessions..."); + session_send_lock_all(m, true); + return 1; + } + + if (HANDLE_ACTION_IS_SLEEP(handle)) + return handle_action_sleep_execute(m, handle, ignore_inhibited, is_edge); + + return handle_action_execute(m, handle, ignore_inhibited, is_edge); +} + +static const char* const handle_action_verb_table[_HANDLE_ACTION_MAX] = { + [HANDLE_IGNORE] = "do nothing", + [HANDLE_POWEROFF] = "power off", + [HANDLE_REBOOT] = "reboot", + [HANDLE_HALT] = "halt", + [HANDLE_KEXEC] = "kexec", + [HANDLE_SOFT_REBOOT] = "soft-reboot", + [HANDLE_SUSPEND] = "suspend", + [HANDLE_HIBERNATE] = "hibernate", + [HANDLE_HYBRID_SLEEP] = "enter hybrid sleep", + [HANDLE_SUSPEND_THEN_HIBERNATE] = "suspend and later hibernate", + [HANDLE_FACTORY_RESET] = "perform a factory reset", + [HANDLE_LOCK] = "be locked", +}; + +DEFINE_STRING_TABLE_LOOKUP_TO_STRING(handle_action_verb, HandleAction); + +/* These strings are sent out by PrepareForShutdownWithMetadata signals as metadata, so the values cannot + * change as they are public APIs. */ +static const char* const handle_action_table[_HANDLE_ACTION_MAX] = { + [HANDLE_IGNORE] = "ignore", + [HANDLE_POWEROFF] = "poweroff", + [HANDLE_REBOOT] = "reboot", + [HANDLE_HALT] = "halt", + [HANDLE_KEXEC] = "kexec", + [HANDLE_SOFT_REBOOT] = "soft-reboot", + [HANDLE_SUSPEND] = "suspend", + [HANDLE_HIBERNATE] = "hibernate", + [HANDLE_HYBRID_SLEEP] = "hybrid-sleep", + [HANDLE_SUSPEND_THEN_HIBERNATE] = "suspend-then-hibernate", + [HANDLE_FACTORY_RESET] = "factory-reset", + [HANDLE_LOCK] = "lock", +}; + +DEFINE_STRING_TABLE_LOOKUP(handle_action, HandleAction); +DEFINE_CONFIG_PARSE_ENUM(config_parse_handle_action, handle_action, HandleAction, "Failed to parse handle action setting"); |