Merge pull request #6894 from nextcloud/backport/6892/stable-3.13

[stable-3.13] Fix permanent freeze upon opening macOS VFS settings

src/gui/macOS/fileproviderxpc_mac.mm

@@ -20,6 +20,10 @@
 #include "gui/macOS/fileproviderdomainmanager.h"
 #include "gui/macOS/fileproviderxpc_mac_utils.h"
 
+namespace {
+    constexpr int64_t semaphoreWaitDelta = 3000000000; // 3 seconds
+}
+
 namespace OCC::Mac {
 
 Q_LOGGING_CATEGORY(lcFileProviderXPC, "nextcloud.gui.macos.fileprovider.xpc", QtInfoMsg)
@@ -148,13 +152,19 @@
 
     __block BOOL receivedFastEnumerationEnabled; // What is the value of the setting being used by the extension?
     __block BOOL receivedFastEnumerationSet; // Has the setting been set by the user?
+    __block BOOL receivedResponse = NO;
     dispatch_semaphore_t semaphore = dispatch_semaphore_create(0);
     [service getFastEnumerationStateWithCompletionHandler:^(BOOL enabled, BOOL set) {
         receivedFastEnumerationEnabled = enabled;
         receivedFastEnumerationSet = set;
+        receivedResponse = YES;
         dispatch_semaphore_signal(semaphore);
     }];
-    dispatch_wait(semaphore, DISPATCH_TIME_FOREVER);
+    dispatch_semaphore_wait(semaphore, dispatch_time(DISPATCH_TIME_NOW, semaphoreWaitDelta));
+    if (!receivedResponse) {
+        qCWarning(lcFileProviderXPC) << "Did not receive response for fast enumeration state";
+        return std::nullopt;
+    }
     return std::optional<std::pair<bool, bool>>{{receivedFastEnumerationEnabled, receivedFastEnumerationSet}};
 }