Zune access partial - no file transfer, no directory management

[jamesdavidhoward]

Attempting use of simple-mtpfs on Fedora Linux (version info below). Initial connection to the "Zune 8GB" successful, using ~/.mtpz-data to authenticate, using command line:

$ simple-mtpfs -d --device 1 /mnt/Zune -o rw,enable-move,\
> allow_other,noforget,nonempty,uid=7445,gid=100

Encouraging; can cd to dirs within device, can ls to see files & other dirs, can rm individual files; command flag -d(ebug) shows mtp LOOKUP, OPENDIR, READDIR, RELEASEDIR , UNLINK, FORGET operations & args, concluding with success messages.

However, command line commands that alter directory structure, create, read or move files all fail:

• cat /mnt/Zune/Documents/README.txt: unique: 100, opcode: OPEN (14), nodeid: 9, insize: 48, pid: 118264 open flags: 0x8000 /Documents/README.txt Error 2: PTP Layer error 02fe: LIBMTP_Get_File_To_File_Descriptor(): Could not get file from device. Error 2: Error 02fe: PTP Data Expected fuse: bad error value: 2 unique: 100, error: -34 (Numerical result out of range), outsize: 16

• cp "/mnt/Zune/Music/Deuter/San/06 Opal.mp3" /tmp # from Zune essentially, duplicates LIBMTP... and PTP errors above, then: cp: cannot open '/mnt/Zune/Music/Deuter/San/06 Opal.mp3' for reading: Numerical result out of range

• cp ~/Test.mp3 "/mnt/Zune/Music/Deuter/San/09 Test.mp3" unique: 390, opcode: CREATE (35), nodeid: 4, insize: 76, pid: 125279 create flags: 0x80c1 /Music/Deuter/San/09 Test.mp3 0100644 umask=0000 Error 2: PTP Layer error 200f: send_file_object_info():Could not send object property list. Error 2: Error 200f: PTP Access Denied Error 2: PTP Layer error 200f: ACCESS DENIED. Error 2: Error 200f: PTP Access Denied create[4] flags: 0x80c1 /Music/Deuter/San/09 Test.mp3 then the cp shell command reports: cp: cannot create regular file '/mnt/Zune/Music/Deuter/San/09 Test.mp3': No such file or directory

• mkdir /mnt/Zune/JimTest unique: 378, opcode: MKDIR (9), nodeid: 1, insize: 56, pid: 125063 mkdir /JimTest 0777 umask=0000 Error 2: PTP Layer error 200f: LIBMTP_Create_Folder: Could not send object info. Error 2: Error 200f: PTP Access Denied Error 2: PTP Layer error 200f: ACCESS DENIED. Error 2: Error 200f: PTP Access Denied unique: 378, error: -22 (Invalid argument), outsize: 16 then mkdir: cannot create directory ‘JimTest’: Invalid argument

Version info: On Fedora 31 x86_64, using: simple-mtpfs v. 0.2 FUSE library version: 2.9.9 fusermount version: 2.9.9 using FUSE kernel interface version 7.19

Note: the separately-installed tool gMTP (ver. 1.3.3):

• can do mkdir and cp (to the Zune only, not from)
• cannot see previously-created directories or files on the Zune

Any command-line usage / options I'm using incorrectly? Any way to get more debug information about access rights interpretation, etc.?