FSEvent failed to create stream in root context: Error: FSEventStreamCreate: _FSEventStreamCreate: ERROR: watch_path() failed for

Question

I want to monitor directories on mac using FSEvent.

This Error is getting generated in root context. If i run program in user context it work properly.

Error is: FSEventStreamCreate: _FSEventStreamCreate: ERROR: watch_path() failed for some_path.

I want to watch array of paths. but creating stream get failed.

its working fine for lower number of paths in root.

code I use to create stream is.

    FSEventStreamContext * streamContext = (FSEventStreamContext *)malloc(sizeof(FSEventStreamContext));
    streamContext->version = 0;
    streamContext->info = NULL;//&fileDescriptor;
    streamContext->retain = NULL;
    streamContext->release = NULL;
    streamContext->copyDescription = NULL;

    /* Create the stream, passing in a callback */
    stream = FSEventStreamCreate(
                                 NULL,
                                 &myCallbackFunction,
                                 streamContext,
                                 pathsToWatch,  /* This is the array of paths I am passing to watch, It work fine in user context for large number of objects too. */
                                 kFSEventStreamEventIdSinceNow, /* Or a previous event ID */
                                 latency,
                                 kFSEventStreamCreateFlagNone | kFSEventStreamCreateFlagWatchRoot /* Flags explained in reference */
                                 );

 if (NULL == stream) /* Stream get NULL */
    {
        NSLog(@"Ruturning False : stream == NULL");
        NSLog(@"FSEventStreamCreate  failed");
        return;
    }

Thanks in advance.

Answer 1

kFSEventStreamCreateFlagWatchRoot flag in function FSEventStreamCreate() cause problem, I don't know why.

But when I remove that flag it run in root context and user context also for many number of paths.