Allow disabling actions via `device_config`

[yuri1969]

It'd be great to be able to specify allowed/disabled actions performed at devices via the config's device_config section in a similar fashion ignore, automount, or options are.

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The reason behind this request is e.g. Lenovo T480-series laptop which includes an internal SD/MMC reader which shows itself as the /dev/sda device and mounts inserted cards as /dev/sda1.

Udiskie correctly automounts a SD card on insert and allows unmounting it properly. However, it also allows ejecting the reader itself aka the /dev/sda device.

This is rather unfortunate since a single misclick disconnects/disables the whole SD/MMC reader...

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Can this situation be remedied by e.g. an udev rule or is this really needed to be dealt with by udiskie?

udisksctl dump

...
/org/freedesktop/UDisks2/drives/Generic__SD_2fMMC_20120501030900000:
  org.freedesktop.UDisks2.Drive:
    CanPowerOff:                false
    Configuration:              {}
    ConnectionBus:              usb
    Ejectable:                  true
    Id:                         Generic--SD-MMC-20120501030900000
    Media:                      
    MediaAvailable:             true
    MediaChangeDetected:        true
    MediaCompatibility:         
    MediaRemovable:             true
    Model:                      SD/MMC
    Optical:                    false
    OpticalBlank:               false
    OpticalNumAudioTracks:      0
    OpticalNumDataTracks:       0
    OpticalNumSessions:         0
    OpticalNumTracks:           0
    Removable:                  true
    Revision:                   1.00
    RotationRate:               -1
    Seat:                       seat0
    Serial:                     20120501030900000
    SiblingId:                  /sys/devices/pci0000:00/0000:00:14.0/usb2/2-3/2-3:1.0
    Size:                       31914983424
    SortKey:                    00coldplug/12removable/sd____a
    TimeDetected:               1737095904635184
    TimeMediaDetected:          1737095926436244
    Vendor:                     Generic-
    WWN:                        
...
/org/freedesktop/UDisks2/block_devices/sda:
  org.freedesktop.UDisks2.Block:
    Configuration:              []
    CryptoBackingDevice:        '/'
    Device:                     /dev/sda
    DeviceNumber:               2048
    Drive:                      '/org/freedesktop/UDisks2/drives/Generic__SD_2fMMC_20120501030900000'
    HintAuto:                   true
    HintIconName:               
    HintIgnore:                 false
    HintName:                   
    HintPartitionable:          true
    HintSymbolicIconName:       
    HintSystem:                 false
    Id:                         
    IdLabel:                    
    IdType:                     
    IdUUID:                     
    IdUsage:                    
    IdVersion:                  
    MDRaid:                     '/'
    MDRaidMember:               '/'
    PreferredDevice:            /dev/sda
    ReadOnly:                   false
    Size:                       31914983424
    Symlinks:                   /dev/disk/by-diskseq/15
                                /dev/disk/by-id/usb-Generic-_SD_MMC_20120501030900000-0:0
                                /dev/disk/by-path/pci-0000:00:14.0-usb-0:3:1.0-scsi-0:0:0:0
                                /dev/disk/by-path/pci-0000:00:14.0-usbv3-0:3:1.0-scsi-0:0:0:0
    UserspaceMountOptions:      
  org.freedesktop.UDisks2.PartitionTable:
    Partitions:         /org/freedesktop/UDisks2/block_devices/sda1
    Type:               dos

[coldfix]

Hey,
I certainly like that idea.

Can this situation be remedied by e.g. an udev rule or is this really needed to be dealt with by udiskie?

From a superficial look in udisks source it looks like maybe it can be done with an udev rule setting the removable attribute to false, something like this:

KERNEL=="sda", ATTR{removable}="0"

However, I couldn't get it to work right now. udevadm info -a /dev/sda still shows ATTR{removable}=="1" and udisksctl dump shows the drive as Ejectable: true. Maybe there is more at play here. udevadm monitor may also be helpful, if you want to try.

[yuri1969]

@coldfix Yea, I had no luck with marking the device non-removable via udev.