禁用特定设备的 MTP udev 规则，以便它可以作为 USB 大容量存储设备安装

Question

我有一个不是安卓/移动设备的特定设备的问题。
这是一个带有内部硬盘驱动器的媒体播放器，我试图将其连接为大容量存储设备，以便我也可以从中复制电影/连续剧。

当我将它连接到我的系统时，我看到以下内容

kernel: usb 1-4: new high-speed USB device number 7 using xhci_hcd
systemd[1]: Starting Cleanup of Temporary Directories...
systemd[1]: Started Cleanup of Temporary Directories.
mtp-probe[4978]: checking bus 1, device 7: "/sys/devices/pci0000:00/0000:00:14.0/usb1/1-4"
kernel: usb 1-4: can't set config #1, error -110
mtp-probe[4978]: bus: 1, device: 7 was not an MTP device
kernel: usb 1-4: USB disconnect, device number 7

lsusb 显示我

Bus 001 Device 008: ID 174c:5106 ASMedia Technology Inc. ASM1051 SATA 3Gb/s bridge
Couldn't open device, some information will be missing
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.10
  bDeviceClass            0 
  bDeviceSubClass         0 
  bDeviceProtocol         0 
  bMaxPacketSize0        64
  idVendor           0x174c ASMedia Technology Inc.
  idProduct          0x5106 ASM1051 SATA 3Gb/s bridge
  bcdDevice            0.01
  iManufacturer           2 
  iProduct                3 
  iSerial                 1 
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength           32
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          0 
    bmAttributes         0xc0
      Self Powered
    MaxPower                0mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           2
      bInterfaceClass         8 Mass Storage
      bInterfaceSubClass      6 SCSI
      bInterfaceProtocol     80 Bulk-Only
      iInterface              0 
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x02  EP 2 OUT
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               0

我的内核和发行版

uname -a
Linux aaron-pc 4.9.24-1-MANJARO #1 SMP PREEMPT Fri Apr 21 08:32:28 UTC 2017 x86_64 GNU/Linux

Answer 1

经过大量阅读和测试。

我发现这与默认 Udev 规则的最近更改有关，如果它们与 USB 设备的任何其他 udev 规则不匹配，则为由 MTP 处理的设备设置一个包罗万象的规则。

而不是像以前那样将我的设备安装为 USB 大容量存储设备。

我发现我需要让 udev 知道这个设备应该被管理一个 USB 大容量存储设备而不是 MTP 捕获所有规则

首先，我需要我的设备 ID。下面是列表中的最后一个

$ lsusb                                                                                                             
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 003: ID 8087:0a2a Intel Corp. 
Bus 001 Device 002: ID 04f2:b51d Chicony Electronics Co., Ltd 
Bus 001 Device 006: ID 04e8:6860 Samsung Electronics Co., Ltd Galaxy (MTP)
Bus 001 Device 005: ID 0b05:181b ASUSTek Computer, Inc. 
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 007: ID 174c:5106 ASMedia Technology Inc

我确信这比我在这里拥有的更多，但这对我有用。我获取设备 ID，174c:5106并在下面的 udev 规则中替换它。

$ cat /etc/udev/rules.d/90-myrules.rules 
SUBSYSTEMS=="usb", ENV{MODALIAS}=="usb:174c:5106", ENV{MODALIAS}="usb-storage"

我现在在系统日志中看到以下内容

journalctl -fe

kernel: usb 1-2: USB disconnect, device number 9
kernel: usb 1-2: new high-speed USB device number 10 using xhci_hcd
mtp-probe[9850]: checking bus 1, device 10: "/sys/devices/pci0000:00/0000:00:14.0/usb1/1-2"
mtp-probe[9850]: bus: 1, device: 10 was not an MTP device
kernel: usb-storage 1-2:1.0: USB Mass Storage device detected
kernel: scsi host3: usb-storage 1-2:1.0
kernel: usbcore: registered new interface driver usb-storage
kernel: usbcore: registered new interface driver uas
kernel: scsi 3:0:0:0: Direct-Access     ST310005 24AS             JC4B PQ: 0 ANSI: 0
kernel: sd 3:0:0:0: Attached scsi generic sg2 type 0
kernel: sd 3:0:0:0: [sdb] 1953525168 512-byte logical blocks: (1.00 TB/932 GiB)
kernel: sd 3:0:0:0: [sdb] Write Protect is off
kernel: sd 3:0:0:0: [sdb] Mode Sense: 23 00 00 00
kernel: sd 3:0:0:0: [sdb] No Caching mode page found
kernel: sd 3:0:0:0: [sdb] Assuming drive cache: write through
kernel:  sdb: sdb1
kernel: sd 3:0:0:0: [sdb] Attached SCSI disk

Answer 2

首先将文件复制/lib/udev/rules.d/69-libmtp.rules到/etc/udev/rules.d/69-libmtp.rules：

$ sudo cp /lib/udev/rules.d/69-libmtp.rules /etc/udev/rules.d/69-libmtp.rules

在此文件的顶部，您可以找到：

# Some sensitive devices we surely don't wanna probe
ATTR{idVendor}=="0670", GOTO="libmtp_rules_end"
ATTR{idVendor}=="0471", ATTR{idProduct}=="083f", GOTO="libmtp_rules_end"

mtp-probe然后通过在上述行之后添加下一行来排除该设备：

ATTR{idVendor}=="093a", ATTR{idProduct}=="2516", GOTO="libmtp_rules_end"

我使用lsusbshell 命令找到了我的 USB 设备 ID。这是093a:2516