From: Lennart Poettering <lennart@poettering.net>
Date: Wed, 19 Sep 2012 13:42:29 +0000 (+0200)
Subject: logind: if a lid-switch lock was taken while the lid was closed, recheck lid status... 
X-Git-Tag: v190~17
X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=commitdiff_plain;h=65b5116220a8ebf8a260716152409aa05377aacc;ds=sidebyside

logind: if a lid-switch lock was taken while the lid was closed, recheck lid status when the lock is released
---

diff --git a/src/login/logind-button.c b/src/login/logind-button.c
index 7cb3f383b..d0c9ccd83 100644
--- a/src/login/logind-button.c
+++ b/src/login/logind-button.c
@@ -150,7 +150,12 @@ fail:
         return r;
 }
 
-static int button_handle(Button *b, InhibitWhat inhibit_key, HandleButton handle, bool ignore_inhibited) {
+static int button_handle(
+                Button *b,
+                InhibitWhat inhibit_key,
+                HandleButton handle,
+                bool ignore_inhibited,
+                bool is_edge) {
 
         static const char * const message_table[_HANDLE_BUTTON_MAX] = {
                 [HANDLE_POWEROFF] = "Powering Off...",
@@ -193,6 +198,14 @@ static int button_handle(Button *b, InhibitWhat inhibit_key, HandleButton handle
         /* If the actual operation is inhibited, warn and fail */
         if (!ignore_inhibited &&
             manager_is_inhibited(b->manager, inhibit_operation, INHIBIT_BLOCK, NULL, false)) {
+
+
+                /* If this is just a recheck of the lid switch then don't warn about anything */
+                if (!is_edge) {
+                        log_debug("Refusing operation, %s is inhibited.", inhibit_what_to_string(inhibit_operation));
+                        return 0;
+                }
+
                 log_error("Refusing operation, %s is inhibited.", inhibit_what_to_string(inhibit_operation));
                 warn_melody();
                 return -EPERM;
@@ -200,14 +213,19 @@ static int button_handle(Button *b, InhibitWhat inhibit_key, HandleButton handle
 
         log_info("%s", message_table[handle]);
 
+        /* We are executing the operation, so make sure we don't
+         * execute another one until the lid is opened/closed again */
+        b->lid_close_queued = false;
+
         dbus_error_init(&error);
         r = bus_manager_shutdown_or_sleep_now_or_later(b->manager, target_table[handle], inhibit_operation, &error);
         if (r < 0) {
                 log_error("Failed to execute operation: %s", bus_error_message(&error));
                 dbus_error_free(&error);
+                return r;
         }
 
-        return r;
+        return 1;
 }
 
 int button_process(Button *b) {
@@ -229,12 +247,12 @@ int button_process(Button *b) {
                 case KEY_POWER:
                 case KEY_POWER2:
                         log_info("Power key pressed.");
-                        return button_handle(b, INHIBIT_HANDLE_POWER_KEY, b->manager->handle_power_key, b->manager->power_key_ignore_inhibited);
+                        return button_handle(b, INHIBIT_HANDLE_POWER_KEY, b->manager->handle_power_key, b->manager->power_key_ignore_inhibited, true);
 
                 case KEY_SLEEP:
                 case KEY_SUSPEND:
                         log_info("Sleep key pressed.");
-                        return button_handle(b, INHIBIT_HANDLE_SLEEP_KEY, b->manager->handle_sleep_key, b->manager->sleep_key_ignore_inhibited);
+                        return button_handle(b, INHIBIT_HANDLE_SLEEP_KEY, b->manager->handle_sleep_key, b->manager->sleep_key_ignore_inhibited, true);
 
                 }
         } else if (ev.type == EV_SW && ev.value > 0) {
@@ -243,13 +261,34 @@ int button_process(Button *b) {
 
                 case SW_LID:
                         log_info("Lid closed.");
-                        return button_handle(b, INHIBIT_HANDLE_LID_SWITCH, b->manager->handle_lid_switch, b->manager->lid_switch_ignore_inhibited);
+                        b->lid_close_queued = true;
+
+                        return button_handle(b, INHIBIT_HANDLE_LID_SWITCH, b->manager->handle_lid_switch, b->manager->lid_switch_ignore_inhibited, true);
+                }
+
+        } else if (ev.type == EV_SW && ev.value == 0) {
+
+                switch (ev.code) {
+
+                case SW_LID:
+                        log_info("Lid opened.");
+                        b->lid_close_queued = false;
+                        break;
                 }
         }
 
         return 0;
 }
 
+int button_recheck(Button *b) {
+        assert(b);
+
+        if (!b->lid_close_queued)
+                return 0;
+
+        return button_handle(b, INHIBIT_HANDLE_LID_SWITCH, b->manager->handle_lid_switch, b->manager->lid_switch_ignore_inhibited, false);
+}
+
 static const char* const handle_button_table[_HANDLE_BUTTON_MAX] = {
         [HANDLE_IGNORE] = "ignore",
         [HANDLE_POWEROFF] = "poweroff",
diff --git a/src/login/logind-button.h b/src/login/logind-button.h
index dd6582e4b..ca820ed7e 100644
--- a/src/login/logind-button.h
+++ b/src/login/logind-button.h
@@ -46,12 +46,15 @@ struct Button {
         char *name;
         char *seat;
         int fd;
+
+        bool lid_close_queued;
 };
 
 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_recheck(Button *b);
 int button_set_seat(Button *b, const char *sn);
 
 const char* handle_button_to_string(HandleButton h);
diff --git a/src/login/logind.c b/src/login/logind.c
index e22f68d23..14c83551b 100644
--- a/src/login/logind.c
+++ b/src/login/logind.c
@@ -1506,6 +1506,26 @@ int manager_startup(Manager *m) {
         return 0;
 }
 
+static int manager_recheck_buttons(Manager *m) {
+        Iterator i;
+        Button *b;
+        int r = 0;
+
+        assert(m);
+
+        HASHMAP_FOREACH(b, m->buttons, i) {
+                int q;
+
+                q = button_recheck(b);
+                if (q > 0)
+                        return 1;
+                if (q < 0)
+                        r = q;
+        }
+
+        return r;
+}
+
 int manager_run(Manager *m) {
         assert(m);
 
@@ -1519,6 +1539,9 @@ int manager_run(Manager *m) {
                 if (manager_dispatch_delayed(m) > 0)
                         continue;
 
+                if (manager_recheck_buttons(m) > 0)
+                        continue;
+
                 if (dbus_connection_dispatch(m->bus) != DBUS_DISPATCH_COMPLETE)
                         continue;