[Bug 662065] Re: Regression: 1394 scanner device (sgN) permissions

[Launchpad Bug Tracker]

Status changed to 'Confirmed' because the bug affects multiple users.

** Changed in: udev (Ubuntu)
       Status: New => Confirmed

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Title:
  Regression: 1394 scanner device (sgN) permissions

Status in “udev” package in Ubuntu:
  Confirmed

Bug description:
  Binary package hint: udev

  I used a 1394 scanner (Nikon 8000) successfully until karmic. After
  upgrading to maverick however, the device is only accessible to root:

  $ ls -l /dev/sg4
  crw------- 1 root root 21, 4 2010-10-17 12:02 /dev/sg4

  Granting rw-permissions to "other" fixes the problem.
  More sensible permissions should be the default.

  This is what udev knows about the device:

  $ udevadm info -a -rp /sys/class/scsi_generic/sg4

  Udevadm info starts with the device specified by the devpath and then
  walks up the chain of parent devices. It prints for every device
  found, all possible attributes in the udev rules key format.
  A rule to match, can be composed by the attributes of the device
  and the attributes from one single parent device.

    looking at device '/devices/pci0000:00/0000:00:06.0/0000:01:0b.0/fw1/fw1.0/host10/target10:0:0/10:0:0:0/scsi_generic/sg4':
      KERNEL=="sg4"
      SUBSYSTEM=="scsi_generic"
      DRIVER==""

    looking at parent device '/devices/pci0000:00/0000:00:06.0/0000:01:0b.0/fw1/fw1.0/host10/target10:0:0/10:0:0:0':
      KERNELS=="10:0:0:0"
      SUBSYSTEMS=="scsi"
      DRIVERS==""
      ATTRS{device_blocked}=="0"
      ATTRS{type}=="6"
      ATTRS{scsi_level}=="3"
      ATTRS{vendor}=="Nikon   "
      ATTRS{model}=="LS-8000 ED      "
      ATTRS{rev}=="1.11"
      ATTRS{state}=="running"
      ATTRS{timeout}=="0"
      ATTRS{iocounterbits}=="32"
      ATTRS{iorequest_cnt}=="0x1"
      ATTRS{iodone_cnt}=="0x1"
      ATTRS{ioerr_cnt}=="0x0"
      ATTRS{modalias}=="scsi:t-0x06"
      ATTRS{evt_media_change}=="0"
      ATTRS{dh_state}=="detached"
      ATTRS{queue_depth}=="1"
      ATTRS{queue_type}=="none"
      ATTRS{ieee1394_id}=="0090b54002ffffff:00042c:0000"

    looking at parent device '/devices/pci0000:00/0000:00:06.0/0000:01:0b.0/fw1/fw1.0/host10/target10:0:0':
      KERNELS=="target10:0:0"
      SUBSYSTEMS=="scsi"
      DRIVERS==""

    looking at parent device '/devices/pci0000:00/0000:00:06.0/0000:01:0b.0/fw1/fw1.0/host10':
      KERNELS=="host10"
      SUBSYSTEMS=="scsi"
      DRIVERS==""

    looking at parent device '/devices/pci0000:00/0000:00:06.0/0000:01:0b.0/fw1/fw1.0':
      KERNELS=="fw1.0"
      SUBSYSTEMS=="firewire"
      DRIVERS=="sbp2"
      ATTRS{modalias}=="ieee1394:ven000090B5mo00004002sp0000609Ever00010483"
      ATTRS{rom_index}=="11"
      ATTRS{specifier_id}=="0x00609e"
      ATTRS{version}=="0x010483"
      ATTRS{model}=="0x004002"
      ATTRS{model_name}=="LS-8000 ED"

    looking at parent device '/devices/pci0000:00/0000:00:06.0/0000:01:0b.0/fw1':
      KERNELS=="fw1"
      SUBSYSTEMS=="firewire"
      DRIVERS==""
      ATTRS{guid}=="0x0090b54002ffffff"
      ATTRS{units}=="0x00609e:0x010483"
      ATTRS{vendor}=="0x0090b5"
      ATTRS{hardware_version}=="0x00500a"
      ATTRS{vendor_name}=="Nikon"

    looking at parent device '/devices/pci0000:00/0000:00:06.0/0000:01:0b.0':
      KERNELS=="0000:01:0b.0"
      SUBSYSTEMS=="pci"
      DRIVERS=="firewire_ohci"
      ATTRS{vendor}=="0x104c"
      ATTRS{device}=="0x8023"
      ATTRS{subsystem_vendor}=="0x1043"
      ATTRS{subsystem_device}=="0x808b"
      ATTRS{class}=="0x0c0010"
      ATTRS{irq}=="19"
      ATTRS{local_cpus}=="00000000,00000003"
      ATTRS{local_cpulist}=="0-1"
      ATTRS{modalias}=="pci:v0000104Cd00008023sv00001043sd0000808Bbc0Csc00i10"
      ATTRS{numa_node}=="0"
      ATTRS{dma_mask_bits}=="32"
      ATTRS{consistent_dma_mask_bits}=="32"
      ATTRS{enable}=="1"
      ATTRS{broken_parity_status}=="0"
      ATTRS{msi_bus}==""

    looking at parent device '/devices/pci0000:00/0000:00:06.0':
      KERNELS=="0000:00:06.0"
      SUBSYSTEMS=="pci"
      DRIVERS==""
      ATTRS{vendor}=="0x10de"
      ATTRS{device}=="0x0370"
      ATTRS{subsystem_vendor}=="0x10de"
      ATTRS{subsystem_device}=="0xcb84"
      ATTRS{class}=="0x060401"
      ATTRS{irq}=="0"
      ATTRS{local_cpus}=="00000000,00000003"
      ATTRS{local_cpulist}=="0-1"
      ATTRS{modalias}=="pci:v000010DEd00000370sv000010DEsd0000CB84bc06sc04i01"
      ATTRS{numa_node}=="0"
      ATTRS{dma_mask_bits}=="32"
      ATTRS{consistent_dma_mask_bits}=="32"
      ATTRS{enable}=="1"
      ATTRS{broken_parity_status}=="0"
      ATTRS{msi_bus}=="1"

    looking at parent device '/devices/pci0000:00':
      KERNELS=="pci0000:00"
      SUBSYSTEMS==""
      DRIVERS==""

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