Hello folks, While the API for FileProviderUI is listed as supporting VisionOS 1.0, Xcode Cloud complains at the first step of the build with: "Unsupported Platform. The extension bundle LaTerminal.app/PlugIns/LaTerminalFileProviderUI.appex is not supported for this platform. Please refer to the App Extension Programming Guide at http://developer.apple.com." I also noticed that while you can create a FileExtension from Xcode, there is no template for creating the FileExtensionUI on Xcode for VisionOS projects. Could use some guidance as to what I could be doing wrong.

Hello all, When copying a lot of files using NSFileProviderReplicatedExtension (more than 2000 files) to the a local storage, fetchContents is called for each file, but usually after around 2000 files, fetchContents is not called anymore. No errors, no invalidate() called, no cancelations, no log messages, just silence. Is there any explanation or solution for this behaviour? I want the extension to provide all files until the end. By the way, if the transfer fails, but you double click on the local folder a "Finish Copying" option is presented and after that fetchContents for the remaining files is called (which is good). Thank you.

Hello, Anyone know of relevant documentation that captures the difference between vfsStruct.f_fsid and fstat.st_ino ? sys/stat.h declares: ino_t st_ino; /* [XSI] File serial number */ AND sys/statvfs.h declares: unsigned long f_fsid; /* Filesystem ID */ Based on some tests, it seems that the st_ino is the number/inode_number that the filesystem identifies the file-resource by ? I observed that this number gets a unique value when I copy a file even when the Finder/FS utilizes the Space-Saver feature of MacOS. This value is identical to the results returned by the command ls "-i" . When copying via Finder, I am seeing distinct st_ino values for source and destination files. f_fsid seems to be identifying the File differently though, perhaps taking into account what Data/attributes objects the file resource points to ? I observed that this number gets an identical value when I copy a file even when the Finder/FS utilizes the Space-Saver feature of MacOS. So, the value of f_fsid seems to be copied over to the destination file record. Also, I could not find a way to display f_fsid via the ls command. On a related note, Any documentation regarding MacOS Finder/FS's Space-Saver feature or how it is implemented ? Thanks, Vikram.S.Warraich

I am trying to populate the Finder comment field from extendedAttributes with the code bellow but it doesn't work. Any idea why ? var extendedAttributes: [String : Data] { var attrs = [String: Data]() let comment = self.caption do { let xmlPlistData = try PropertyListSerialization.data(fromPropertyList: comment as Any, format: .xml, options: 0) attrs["com.apple.metadata:kMDItemFinderComment"] = xmlPlistData } catch { NSLog("Error during plist conversion: \(error)") } return attrs }

Hello, I have another quick question. I'm using NSFileProviderReplicatedExtension to create a macOS File Provider app to access remote files directly in Finder. When I copy a file to a remote folder (managed by File Provider) "createItem(basedOn itemTemplate: NSFileProviderItem, fields: NSFileProviderItemFields ....)" is triggered and this is fine. But immediately after the file is upload fetchContents(for itemIdentifier: NSFileProviderItemIdentifier, version ...)" is also triggered. Is this expected? Downloading again the file after upload requires some time and it's not the best experience for the user if he is in a hurry. Is there any way to prevent this? Thank you.

Hello, I'm having some problems in implementing a File Provider based app. NSFileProviderEnumerator is very slow for many files (over 2000 files). I'm using pagination like this: observer.didEnumerate(paged_files) // page size is usually 200 let nextPage = NSFileProviderPage((page + 1).description.data(using: .utf8)!) observer.finishEnumerating(upTo: nextPage) and observer.finishEnumerating(upTo: nil) when finished all pages. But after calling "observer.finishEnumerating(upTo: nil)" it still takes a lot of time (20-30 seconds) until all files are listed in Finder. Any tips? Thank you.

Hello, I have a quick question. In my File Provider based Mac application, if the user copies a folder to his computer, the "download" progress indicator near the folder name (the one from Finder) is showing only if the user entered the folder before. If the user did not enter the folder before and copies the folder, the progress indicator is showing always zero and jumps to 100% after the copy operation is over. Any thought on this? Thank you.

tl;dr I'm trying to get the FruitBasket demo to operate (Synchronizing files using file provider extensions | Apple Developer Documentation) on Sonoma 14.1.2. I'm probably being stupid about something but It doesn't work as I expect so would welcome any suggestions. Details I downloaded the FruitBasket demo code I attempted to carefully follow the README and replace all instances of group.com.example.apple-samplecode.FruitBasket I built and ran and created a domain My new domain appears in the Finder side-bar. It appears as a directory in ~Library/CloudStorage/. But attempting to (e.g.) ls ~/Library/CloudStorage/* gives me an ETIMEDOUT error and the Finder says something similar. Things that I observed: once a domain exists, there is indeed a Provider executable running. it never generates any log messages attaching the Xcode debugger to it and setting some seemingly likely to be invoked breakpoints (e.g. Extension.Extension.enumerator) never hit the breakpoints. my naïve take on the disassembly when pausing it suggests that it's waiting for incoming Mach messages. (That seemed sensible.) FruitBasket starts with an error: Couldn't read values in CFPrefsPlistSource<0x6000039853b0> (Domain group.org.liqui.apple-samplecode.FruitBasket, User: kCFPreferencesAnyUser, ByHost: Yes, Container: (null), Contents Need Refresh: Yes): Using kCFPreferencesAnyUser with a container is only allowed for System Containers, detaching from cfprefsd Questions Does the above error suggest that I have set the group value wrong somewhere? Maybe Extension+Servicing.swift:21 defining the NSFileProviderServiceName("com.example.FruitService") is mismatched somewhere?

Hi, Can a customized Pages document be created and integrated into an Apple Multiplatform App? Thank you!

hi,i want to create a NSFileProviderExtension , need add file for storage, but, i create a folder, xocde show a error : [ERROR] List of user interactions is not an array

Has anyone else been unable to trigger item eviction? Note I am using MacOS Sonoma 14.1 on a Macbook Air M1. I have attempted using both the swift API myFileProviderManager.evictItem(myItemID) as well as the CLI tool fileproviderctl evict "path/to/myFile.txt" and both return Error Domain=NSFileProviderErrorDomain Code=-2008 "The file ‘myFile.txt’ cannot be evicted.". This error maps to the nonEvictable error. Therefore I attempted providing the necessary permissions to evict my file. I have attempted applying all 4 possible configurations of NSFileProviderContentPolicy to this file. I have tried the legacy option of using the capability .allowsEviction. I have even tried with NSExtensionFileProviderAllowsUserControlledEviction set to both YES and NO as I noticed Dropbox was able to evict items even though this option was set to NO. None of these attempts have succeeded. I noticed if I ran fileproviderctl evict "path/to/myFile.txt" --namespace I was able to see that the file has the contentPolicy of 1 which maps to the downloadLazily contentPolicy. The NSFileProviderContentPolicy code documentation states that with this configuration will "Allow eviction on low disk pressure and other triggers." For clarity here is a table of my various attempts with NSExtensionFileProviderAllowsUserControlledEviction set to YES: NSFileProviderContentPolicy With Evict Capability Without Evict Capability None (i.e. default) 2008 Failed to evict 2008 Failed to evict inherited 2008 Failed to evict 2008 Failed to evict downloadLazily 2008 Failed to evict 2008 Failed to evict downloadEagerlyAndKeepDownloaded 2008 Failed to evict 2008 Failed to evict downloadLazilyAndEvictOnRemoteUpdate 2008 Failed to evict 2008 Failed to evict What am I missing? Is the documentation outdated? Is this a bug? Any tips will be greatly appreciated!

I was successfully able to get the callback for file reads for the files in my mounted folder. Now we need to implement some read protection on top of that, we need to only allow some specific applications to access the data through the File provider. for that, we need to get the name or any information regarding the Application that requested the read. one thing I've seen is the request.requestingExecutable , which is coming nil for all the applications trying to read the files in the mounted folder. But i do get applications name for the things done by finder (drag&drop and Copy paste) . What are the ways I can get the reading Application names ? and what could be done for implementing data leak features working in pair with the File Provider Extension ?

Our application which isn't a sandboxed app tries to access(copies) the file from the URL given by the file provider to the application's cache path but fails with the 'operation not permitted' error. This happens in two cases 1. File Creation & 2. File Modification. Also, on checking the path, it is like "/Library/Application Support/FileProvider/{RandID}/wharf/wharf/propagate". Even we tried to access the folder using a Python script and run it via the terminal but it also failed with the same error. But when we enable the 'full disk access' option in the 'privacy & security' tab of the system settings for the application(our main app/terminal), the files can be accessed. Our application doesn't need the 'full disk access' instead it needs permission to access the file provider extension's cache path where the temp files were stored. How to get permissions for that folder and access the files (like setting the entitlement keys or other ways)? Or else Is there any way to inform the system to use our application cache path as the file provider's cache path? Any help would be appreciated.

I have a Login Item that is bundled with my .app and can run in the background. The Login Item has a File Provider extension. When a user downloads and installs a new version of the main .app, what's the correct way to handle stopping and restarting the login item and File Provider related processes to make sure they are running the latest code also?

General: DevForums tags: Files and Storage, Finder Sync, File Provider, Disk Arbitration, APFS File System Programming Guide On File System Permissions DevForums post File Provider framework Finder Sync framework App Extension Programming Guide > App Extension Types > Finder Sync Disk Arbitration Programming Guide Mass Storage Device Driver Programming Guide Device File Access Guide for Storage Devices Apple File System Guide TN1150 HFS Plus Volume Format Extended Attributes and Zip Archives File system changes introduced in iOS 17 DevForums post Share and Enjoy — Quinn “The Eskimo!” @ Developer Technical Support @ Apple let myEmail = "eskimo" + "1" + "@" + "apple.com"

Hey, I'm not sure I'm even in the correct ballpark - trying to allow my app to download largish videos from user's OneDrive and G-Drive to app Is it correct to use NSFileCoordinator in this way? How do I report progress as it downloads the video (is it possible?) Is it correct to dismiss the picker like this? anything else wrong (or, like is....any of it correct? :) it's sort of working with my contrived examples (I created new personal G-drive / Onedrive accounts, and copied vids up there), but...when I use a file from our corporate OneDrive, from shared folder, I get: "NSCocoaErrorDomain Code=3328 "The requested operation couldn’t be completed because the feature is not supported." Is this the NSFileProvider extension (Microsoft's) complaining? public func documentPicker(_ controller: UIDocumentPickerViewController, didPickDocumentsAt urls: [URL]) {     guard  let url = urls.first else {       return     }     let isSecurityScoped = url.startAccessingSecurityScopedResource()     print("(#function) - iSecurityScoped = (isSecurityScoped)")     print("(#function) - document at (url)")     let filename = String(UUID().uuidString.suffix(6)) + "_" +  url.lastPathComponent     let newURL = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask)[0].appendingPathComponent(filename)          let readingIntent = NSFileAccessIntent.readingIntent(with: url, options: .withoutChanges)     fileCoordinator.coordinate(with: [readingIntent], queue: queue) { error in       defer {         if isSecurityScoped {           url.stopAccessingSecurityScopedResource()         }       }       if let error = error {         print("(#function) - (error)")         return       }       let safeURL = readingIntent.url       do {         let fileData = try Data(contentsOf: safeURL)         try fileData.write(to: newURL, options: .atomic)         print("(#function) - SUCCESS - newURL = (newURL)")       } catch {         print("(#function) - NOOOOO - (error)")       }     }     controller.dismiss(animated: true)   }