Cannot write file to runtime added storages

[yana9i]

Hi,

I'm using a Firefly-RK3399 board with 4.4.194 kernel. And I'm using configfs mode to access the data from the board.
Storage entry points written in the configuration file works work properly. But when I try to add and mount some entry by the runtime command, I cannot write file to the entry point.

I added and mounted the entry point with the following commands:

umtprd "-cmd:addstorage:/tmp tmp rw"
umtprd "-cmd:mount:tmp"

And I tried to write some file to the entry point, Here is the debug info:

[uMTPrd - 07:31:56 - Debug] --------------------------------------------------
[uMTPrd - 07:31:56 - Debug] Incoming_packet : 0x5579ee8a40 - rawsize : 20
[uMTPrd - 07:31:56 - Debug] MTP Packet size : 20 bytes
[uMTPrd - 07:31:56 - Debug] MTP Operation   : 0x0001 (OPERATION)
[uMTPrd - 07:31:56 - Debug] MTP code        : 0x100C (MTP_OPERATION_SEND_OBJECT_INFO)
[uMTPrd - 07:31:56 - Debug] MTP Tx ID       : 0x0000003C
[uMTPrd - 07:31:56 - Debug] Header :
[uMTPrd - 07:31:56 - Debug] 14 00 00 00 01 00 0C 10 3C 00 00 00              ............
[uMTPrd - 07:31:56 - Debug] Payload :
[uMTPrd - 07:31:56 - Debug] 03 00 FF FF FF FF FF FF                          ........
[uMTPrd - 07:31:56 - Debug] MTP_OPERATION_SEND_OBJECT_INFO : Rx dataset...
[uMTPrd - 07:31:56 - Debug] B6 00 00 00 02 00 0C 10 3C 00 00 00 00 00 00 00  ................
................
// Omitted some debug info of the payload
................
[uMTPrd - 07:31:56 - Debug] 00 00 00 00                                      ....
[uMTPrd - 07:31:56 - Debug] mtp_get_storage_root : FFFF0002
[uMTPrd - 07:31:56 - Debug] mtp_get_storage_root : FFFF0002 -> /mnt/test
[uMTPrd - 07:31:56 - Debug] mtp_get_storage_flags : FFFF0002
[uMTPrd - 07:31:56 - Debug] mtp_get_storage_flags : FFFF0002 -> 0x00000002
[uMTPrd - 07:31:56 - Debug] mtp_get_storage_root : FFFF0002
[uMTPrd - 07:31:56 - Debug] mtp_get_storage_root : FFFF0002 -> /mnt/test
[uMTPrd - 07:31:56 - Debug] build_full_path : / -> /mnt/test//
[uMTPrd - 07:31:56 - Debug] mtp_get_storage_index_by_id : 0xFFFF0002
[uMTPrd - 07:31:56 - Debug] mtp_get_storage_index_by_id : FFFF0002 -> 1
[uMTPrd - 07:31:56 - Debug] Status response (12 Bytes):
[uMTPrd - 07:31:56 - Debug] 0C 00 00 00 03 00 02 20 3D 00 00 00              ........=...
[uMTPrd - 07:31:59 - Debug] 1 event(s)
[uMTPrd - 07:31:59 - Debug] EP0 FFS SETUP
[uMTPrd - 07:31:59 - Debug] Setup request 0x67
[uMTPrd - 07:31:59 - Debug] MTP_REQ_GET_DEVICE_STATUS !
[uMTPrd - 07:31:59 - Debug] Select without timeout
[uMTPrd - 07:32:02 - Debug] 1 event(s)
[uMTPrd - 07:32:02 - Debug] EP0 FFS SETUP
[uMTPrd - 07:32:02 - Debug] Setup request 0x67
[uMTPrd - 07:32:02 - Debug] MTP_REQ_GET_DEVICE_STATUS !
[uMTPrd - 07:32:02 - Debug] Select without timeout
[uMTPrd - 07:32:05 - Debug] 1 event(s)
[uMTPrd - 07:32:05 - Debug] EP0 FFS SETUP
[uMTPrd - 07:32:05 - Debug] Setup request 0x67
[uMTPrd - 07:32:05 - Debug] MTP_REQ_GET_DEVICE_STATUS !
[uMTPrd - 07:32:05 - Debug] Select without timeout
[uMTPrd - 07:32:08 - Debug] 1 event(s)
[uMTPrd - 07:32:08 - Debug] EP0 FFS SETUP
[uMTPrd - 07:32:08 - Debug] Setup request 0x67
[uMTPrd - 07:32:08 - Debug] MTP_REQ_GET_DEVICE_STATUS !
[uMTPrd - 07:32:08 - Debug] Select without timeout
[uMTPrd - 07:32:11 - Debug] 1 event(s)
[uMTPrd - 07:32:11 - Debug] EP0 FFS SETUP
[uMTPrd - 07:32:11 - Debug] Setup request 0x67
[uMTPrd - 07:32:11 - Debug] MTP_REQ_GET_DEVICE_STATUS !
[uMTPrd - 07:32:11 - Debug] Select without timeout
[uMTPrd - 07:32:14 - Debug] 1 event(s)
[uMTPrd - 07:32:14 - Debug] EP0 FFS SETUP
[uMTPrd - 07:32:14 - Debug] Setup request 0x67
[uMTPrd - 07:32:14 - Debug] MTP_REQ_GET_DEVICE_STATUS !
[uMTPrd - 07:32:14 - Debug] Select without timeout
[uMTPrd - 07:32:17 - Debug] 1 event(s)
[uMTPrd - 07:32:17 - Debug] EP0 FFS SETUP
[uMTPrd - 07:32:17 - Debug] Setup request 0x67
[uMTPrd - 07:32:17 - Debug] MTP_REQ_GET_DEVICE_STATUS !
[uMTPrd - 07:32:17 - Debug] Select without timeout
[uMTPrd - 07:32:20 - Debug] 1 event(s)
[uMTPrd - 07:32:20 - Debug] EP0 FFS SETUP
[uMTPrd - 07:32:20 - Debug] Setup request 0x67
[uMTPrd - 07:32:20 - Debug] MTP_REQ_GET_DEVICE_STATUS !
[uMTPrd - 07:32:20 - Debug] Select without timeout
[uMTPrd - 07:32:23 - Debug] 1 event(s)
[uMTPrd - 07:32:23 - Debug] EP0 FFS SETUP
[uMTPrd - 07:32:23 - Debug] Setup request 0x67
[uMTPrd - 07:32:23 - Debug] MTP_REQ_GET_DEVICE_STATUS !
[uMTPrd - 07:32:23 - Debug] Select without timeout
[uMTPrd - 07:32:26 - Debug] 1 event(s)
[uMTPrd - 07:32:26 - Debug] EP0 FFS SETUP
[uMTPrd - 07:32:26 - Debug] Setup request 0x67
[uMTPrd - 07:32:26 - Debug] MTP_REQ_GET_DEVICE_STATUS !
[uMTPrd - 07:32:26 - Debug] Select without timeout
[uMTPrd - 07:32:26 - Debug] 1 event(s)
[uMTPrd - 07:32:26 - Debug] EP0 FFS SETUP
[uMTPrd - 07:32:26 - Debug] Setup request 0x64
[uMTPrd - 07:32:26 - Debug] MTP_REQ_CANCEL !
[uMTPrd - 07:32:56 - Debug] MTP_REQ_CANCEL : Forcing read/write exit...
[uMTPrd - 07:32:56 - Debug] MTP_REQ_CANCEL : Stalled ... Killing the link...
[uMTPrd - 07:32:56 - Debug] MTP_REQ_CANCEL done !
[uMTPrd - 07:32:56 - Debug] handle_ffs_ep0 : Leaving... (ctx->stop=1)
[uMTPrd - 07:32:56 - Debug] entering deinit_usb_mtp_gadget
[uMTPrd - 07:32:56 - Debug] Closing End Point 0...
[uMTPrd - 07:32:56 - Debug] Closing End Point 1...
[uMTPrd - 07:32:56 - Debug] Closing End Point 2...
[uMTPrd - 07:32:56 - Debug] Closing usb device...
[uMTPrd - 07:32:56 - Debug] Stopping USB Thread...
[uMTPrd - 07:32:56 - Debug] leaving deinit_usb_mtp_gadget
[uMTPrd - 07:32:56 - Info] uMTP Responder : Disconnected
[uMTPrd - 07:32:56 - Debug] deinit_fs_db called
[uMTPrd - 07:32:56 - Debug] msgqueue_thread : Leaving msgqueue_thread...
[uMTPrd - 07:32:56 - Debug] inotify_thread : read error -1

After this, the umtprd exits.