* Generic udev rule for PTP camera
@ 2006-11-16 13:27 Frederic Peters
2006-11-16 17:57 ` Andrey Borzenkov
0 siblings, 1 reply; 2+ messages in thread
From: Frederic Peters @ 2006-11-16 13:27 UTC (permalink / raw)
To: linux-hotplug
Hello,
For a long time, since we totally switched from hotplug to udev, we
have been unable in Debian to provide fallback support for unknown
PTP cameras.
Hotplugging any known camera works perfectly but this require
attentive maintenance of matching USB id and always lags behind
constructors.
PTP camera devices define an interface which I thought could be
matched by the following rule:
SYSFS{bInterfaceClass}="06", SYSFS{bInterfaceSubClass}="01", \
SYSFS{bInterfaceProtocol}="01", MODE="0660", GROUP="plugdev"
Unfortunately this doesn't work. Then Marcus Meissner from libgphoto2
suggested to use ENV{INTERFACE}="6/1/1" as matcher but I can't get it
to work and Marco d'Itri (Debian udev maintainer) believe this not to
be the correct solution anyway.
Since Marco doesn't have much time for the moment he suggested I asked
the question here, so here it is: what would be the rule to use to set
mode/group on /dev/bus/usb/... device when detecting this device by
bInterface{Class/SubClass/Protocol} ?
For the record, I copied below the output of udevmonitor --env when
plugging in a camera.
Thanks for your support,
Frederic
UEVENT[1163683152.644771] add@/devices/pci0000:00/0000:00:1d.7/usb1/1-2
ACTIONd
DEVPATH=/devices/pci0000:00/0000:00:1d.7/usb1/1-2
SUBSYSTEM=usb
SEQNUM\x1708
PHYSDEVBUS=usb
PHYSDEVDRIVER=usb
UEVENT[1163683152.645218] add@/devices/pci0000:00/0000:00:1d.7/usb1/1-2/usbdev1.4_ep00
ACTIONd
DEVPATH=/devices/pci0000:00/0000:00:1d.7/usb1/1-2/usbdev1.4_ep00
SUBSYSTEM=usb_endpoint
SEQNUM\x1709
MAJORD2
MINOR=3
UDEV [1163683152.645698] add@/devices/pci0000:00/0000:00:1d.7/usb1/1-2
UDEV_LOG=3
ACTIONd
DEVPATH=/devices/pci0000:00/0000:00:1d.7/usb1/1-2
SUBSYSTEM=usb
SEQNUM\x1708
PHYSDEVBUS=usb
PHYSDEVDRIVER=usb
UDEVD_EVENT=1
DRIVER=usb
UEVENT[1163683152.647503] add@/devices/pci0000:00/0000:00:1d.7/usb1/1-2/1-2:1.0
ACTIONd
DEVPATH=/devices/pci0000:00/0000:00:1d.7/usb1/1-2/1-2:1.0
SUBSYSTEM=usb
SEQNUM\x1710
PHYSDEVBUS=usb
DEVICE=/proc/bus/usb/001/004
PRODUCTJ9/30fd/2
TYPE=0/0/0
INTERFACE=6/1/1
MODALIAS=usb:v04A9p30FDd0002dc00dsc00dp00ic06isc01ip01
UEVENT[1163683152.647551] add@/devices/pci0000:00/0000:00:1d.7/usb1/1-2/1-2:1.0/usbdev1.4_ep81
ACTIONd
DEVPATH=/devices/pci0000:00/0000:00:1d.7/usb1/1-2/1-2:1.0/usbdev1.4_ep81
SUBSYSTEM=usb_endpoint
SEQNUM\x1711
MAJORD2
MINOR=3
UEVENT[1163683152.647585] add@/devices/pci0000:00/0000:00:1d.7/usb1/1-2/1-2:1.0/usbdev1.4_ep02
ACTIONd
DEVPATH=/devices/pci0000:00/0000:00:1d.7/usb1/1-2/1-2:1.0/usbdev1.4_ep02
SUBSYSTEM=usb_endpoint
SEQNUM\x1712
MAJORD2
MINOR=3
UEVENT[1163683152.647618] add@/devices/pci0000:00/0000:00:1d.7/usb1/1-2/1-2:1.0/usbdev1.4_ep83
ACTIONd
DEVPATH=/devices/pci0000:00/0000:00:1d.7/usb1/1-2/1-2:1.0/usbdev1.4_ep83
SUBSYSTEM=usb_endpoint
SEQNUM\x1713
MAJORD2
MINOR=3
UEVENT[1163683152.647657] add@/class/usb_device/usbdev1.4
ACTIONd
DEVPATH=/class/usb_device/usbdev1.4
SUBSYSTEM=usb_device
SEQNUM\x1714
PHYSDEVPATH=/devices/pci0000:00/0000:00:1d.7/usb1/1-2
PHYSDEVBUS=usb
PHYSDEVDRIVER=usb
MAJOR\x189
MINOR=3
UDEV [1163683152.664824] add@/devices/pci0000:00/0000:00:1d.7/usb1/1-2/usbdev1.4_ep00
UDEV_LOG=3
ACTIONd
DEVPATH=/devices/pci0000:00/0000:00:1d.7/usb1/1-2/usbdev1.4_ep00
SUBSYSTEM=usb_endpoint
SEQNUM\x1709
MAJORD2
MINOR=3
UDEVD_EVENT=1
DEVNAME=/dev/usbdev1.4_ep00
UDEV [1163683152.665734] add@/devices/pci0000:00/0000:00:1d.7/usb1/1-2/1-2:1.0
UDEV_LOG=3
ACTIONd
DEVPATH=/devices/pci0000:00/0000:00:1d.7/usb1/1-2/1-2:1.0
SUBSYSTEM=usb
SEQNUM\x1710
PHYSDEVBUS=usb
DEVICE=/proc/bus/usb/001/004
PRODUCTJ9/30fd/2
TYPE=0/0/0
INTERFACE=6/1/1
MODALIAS=usb:v04A9p30FDd0002dc00dsc00dp00ic06isc01ip01
UDEVD_EVENT=1
UDEV [1163683152.698823] add@/devices/pci0000:00/0000:00:1d.7/usb1/1-2/1-2:1.0/usbdev1.4_ep81
UDEV_LOG=3
ACTIONd
DEVPATH=/devices/pci0000:00/0000:00:1d.7/usb1/1-2/1-2:1.0/usbdev1.4_ep81
SUBSYSTEM=usb_endpoint
SEQNUM\x1711
MAJORD2
MINOR=3
UDEVD_EVENT=1
DEVNAME=/dev/usbdev1.4_ep81
UDEV [1163683152.700491] add@/devices/pci0000:00/0000:00:1d.7/usb1/1-2/1-2:1.0/usbdev1.4_ep02
UDEV_LOG=3
ACTIONd
DEVPATH=/devices/pci0000:00/0000:00:1d.7/usb1/1-2/1-2:1.0/usbdev1.4_ep02
SUBSYSTEM=usb_endpoint
SEQNUM\x1712
MAJORD2
MINOR=3
UDEVD_EVENT=1
DEVNAME=/dev/usbdev1.4_ep02
UDEV [1163683152.701862] add@/devices/pci0000:00/0000:00:1d.7/usb1/1-2/1-2:1.0/usbdev1.4_ep83
UDEV_LOG=3
ACTIONd
DEVPATH=/devices/pci0000:00/0000:00:1d.7/usb1/1-2/1-2:1.0/usbdev1.4_ep83
SUBSYSTEM=usb_endpoint
SEQNUM\x1713
MAJORD2
MINOR=3
UDEVD_EVENT=1
DEVNAME=/dev/usbdev1.4_ep83
UDEV [1163683152.715971] add@/class/usb_device/usbdev1.4
UDEV_LOG=3
ACTIONd
DEVPATH=/class/usb_device/usbdev1.4
SUBSYSTEM=usb_device
SEQNUM\x1714
PHYSDEVPATH=/devices/pci0000:00/0000:00:1d.7/usb1/1-2
PHYSDEVBUS=usb
PHYSDEVDRIVER=usb
MAJOR\x189
MINOR=3
UDEVD_EVENT=1
DEVNAME=/dev/bus/usb/001/004
UEVENT[1163683157.940219] remove@/devices/pci0000:00/0000:00:1d.7/usb1/1-2/1-2:1.0/usbdev1.4_ep81
ACTION=remove
DEVPATH=/devices/pci0000:00/0000:00:1d.7/usb1/1-2/1-2:1.0/usbdev1.4_ep81
SUBSYSTEM=usb_endpoint
SEQNUM\x1715
MAJORD2
MINOR=3
UEVENT[1163683157.940251] remove@/devices/pci0000:00/0000:00:1d.7/usb1/1-2/1-2:1.0/usbdev1.4_ep02
ACTION=remove
DEVPATH=/devices/pci0000:00/0000:00:1d.7/usb1/1-2/1-2:1.0/usbdev1.4_ep02
SUBSYSTEM=usb_endpoint
SEQNUM\x1716
MAJORD2
MINOR=3
UEVENT[1163683157.940278] remove@/devices/pci0000:00/0000:00:1d.7/usb1/1-2/1-2:1.0/usbdev1.4_ep83
ACTION=remove
DEVPATH=/devices/pci0000:00/0000:00:1d.7/usb1/1-2/1-2:1.0/usbdev1.4_ep83
SUBSYSTEM=usb_endpoint
SEQNUM\x1717
MAJORD2
MINOR=3
UEVENT[1163683157.940285] add@/devices/pci0000:00/0000:00:1d.7/usb1/1-2/1-2:1.0/usbdev1.4_ep81
ACTIONd
DEVPATH=/devices/pci0000:00/0000:00:1d.7/usb1/1-2/1-2:1.0/usbdev1.4_ep81
SUBSYSTEM=usb_endpoint
SEQNUM\x1718
MAJORD2
MINOR=3
UEVENT[1163683157.940292] add@/devices/pci0000:00/0000:00:1d.7/usb1/1-2/1-2:1.0/usbdev1.4_ep02
ACTIONd
DEVPATH=/devices/pci0000:00/0000:00:1d.7/usb1/1-2/1-2:1.0/usbdev1.4_ep02
SUBSYSTEM=usb_endpoint
SEQNUM\x1719
MAJORD2
MINOR=3
UEVENT[1163683157.940298] add@/devices/pci0000:00/0000:00:1d.7/usb1/1-2/1-2:1.0/usbdev1.4_ep83
ACTIONd
DEVPATH=/devices/pci0000:00/0000:00:1d.7/usb1/1-2/1-2:1.0/usbdev1.4_ep83
SUBSYSTEM=usb_endpoint
SEQNUM\x1720
MAJORD2
MINOR=3
UDEV [1163683157.953460] remove@/devices/pci0000:00/0000:00:1d.7/usb1/1-2/1-2:1.0/usbdev1.4_ep81
UDEV_LOG=3
ACTION=remove
DEVPATH=/devices/pci0000:00/0000:00:1d.7/usb1/1-2/1-2:1.0/usbdev1.4_ep81
SUBSYSTEM=usb_endpoint
SEQNUM\x1715
MAJORD2
MINOR=3
UDEVD_EVENT=1
DEVNAME=/dev/usbdev1.4_ep81
UDEV [1163683157.954286] remove@/devices/pci0000:00/0000:00:1d.7/usb1/1-2/1-2:1.0/usbdev1.4_ep02
UDEV_LOG=3
ACTION=remove
DEVPATH=/devices/pci0000:00/0000:00:1d.7/usb1/1-2/1-2:1.0/usbdev1.4_ep02
SUBSYSTEM=usb_endpoint
SEQNUM\x1716
MAJORD2
MINOR=3
UDEVD_EVENT=1
DEVNAME=/dev/usbdev1.4_ep02
UDEV [1163683157.954900] remove@/devices/pci0000:00/0000:00:1d.7/usb1/1-2/1-2:1.0/usbdev1.4_ep83
UDEV_LOG=3
ACTION=remove
DEVPATH=/devices/pci0000:00/0000:00:1d.7/usb1/1-2/1-2:1.0/usbdev1.4_ep83
SUBSYSTEM=usb_endpoint
SEQNUM\x1717
MAJORD2
MINOR=3
UDEVD_EVENT=1
DEVNAME=/dev/usbdev1.4_ep83
UDEV [1163683157.957305] add@/devices/pci0000:00/0000:00:1d.7/usb1/1-2/1-2:1.0/usbdev1.4_ep81
UDEV_LOG=3
ACTIONd
DEVPATH=/devices/pci0000:00/0000:00:1d.7/usb1/1-2/1-2:1.0/usbdev1.4_ep81
SUBSYSTEM=usb_endpoint
SEQNUM\x1718
MAJORD2
MINOR=3
UDEVD_EVENT=1
DEVNAME=/dev/usbdev1.4_ep81
UDEV [1163683157.958620] add@/devices/pci0000:00/0000:00:1d.7/usb1/1-2/1-2:1.0/usbdev1.4_ep02
UDEV_LOG=3
ACTIONd
DEVPATH=/devices/pci0000:00/0000:00:1d.7/usb1/1-2/1-2:1.0/usbdev1.4_ep02
SUBSYSTEM=usb_endpoint
SEQNUM\x1719
MAJORD2
MINOR=3
UDEVD_EVENT=1
DEVNAME=/dev/usbdev1.4_ep02
UDEV [1163683157.959884] add@/devices/pci0000:00/0000:00:1d.7/usb1/1-2/1-2:1.0/usbdev1.4_ep83
UDEV_LOG=3
ACTIONd
DEVPATH=/devices/pci0000:00/0000:00:1d.7/usb1/1-2/1-2:1.0/usbdev1.4_ep83
SUBSYSTEM=usb_endpoint
SEQNUM\x1720
MAJORD2
MINOR=3
UDEVD_EVENT=1
DEVNAME=/dev/usbdev1.4_ep83
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^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: Generic udev rule for PTP camera
2006-11-16 13:27 Generic udev rule for PTP camera Frederic Peters
@ 2006-11-16 17:57 ` Andrey Borzenkov
0 siblings, 0 replies; 2+ messages in thread
From: Andrey Borzenkov @ 2006-11-16 17:57 UTC (permalink / raw)
To: linux-hotplug
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
On Thursday 16 November 2006 16:27, Frederic Peters wrote:
> Hello,
>
> For a long time, since we totally switched from hotplug to udev, we
> have been unable in Debian to provide fallback support for unknown
> PTP cameras.
>
> Hotplugging any known camera works perfectly but this require
> attentive maintenance of matching USB id and always lags behind
> constructors.
>
> PTP camera devices define an interface which I thought could be
> matched by the following rule:
>
> SYSFS{bInterfaceClass}="06", SYSFS{bInterfaceSubClass}="01", \
> SYSFS{bInterfaceProtocol}="01", MODE="0660", GROUP="plugdev"
>
> Unfortunately this doesn't work.
I do not have PTP camera to test, but both /dev/bus/usb/... nodes I can create
here point to sysfs device *above* interface. Which effectively means, that
when you rule matches, there is no device to create; and when device is
created your rule does not match (because those attributes do not exist on
this level)
> Then Marcus Meissner from libgphoto2
> suggested to use ENV{INTERFACE}="6/1/1" as matcher but I can't get it
> to work and Marco d'Itri (Debian udev maintainer) believe this not to
> be the correct solution anyway.
>
I guess it fails for the same reason.
> Since Marco doesn't have much time for the moment he suggested I asked
> the question here, so here it is: what would be the rule to use to set
> mode/group on /dev/bus/usb/... device when detecting this device by
> bInterface{Class/SubClass/Protocol} ?
>
> For the record, I copied below the output of udevmonitor --env when
> plugging in a camera.
>
[...]
>
> UEVENT[1163683152.647503]
> add@/devices/pci0000:00/0000:00:1d.7/usb1/1-2/1-2:1.0 ACTIONd
> DEVPATH=/devices/pci0000:00/0000:00:1d.7/usb1/1-2/1-2:1.0
> SUBSYSTEM=usb
> SEQNUM\x1710
> PHYSDEVBUS=usb
> DEVICE=/proc/bus/usb/001/004
> PRODUCTJ9/30fd/2
> TYPE=0/0/0
> INTERFACE=6/1/1
> MODALIAS=usb:v04A9p30FDd0002dc00dsc00dp00ic06isc01ip01
>
This is your interface
[...]
>
> UEVENT[1163683152.647657] add@/class/usb_device/usbdev1.4
> ACTIONd
> DEVPATH=/class/usb_device/usbdev1.4
> SUBSYSTEM=usb_device
> SEQNUM\x1714
> PHYSDEVPATH=/devices/pci0000:00/0000:00:1d.7/usb1/1-2
> PHYSDEVBUS=usb
> PHYSDEVDRIVER=usb
> MAJOR\x189
> MINOR=3
>
And here is where your /dev/bus/usb/... node is created.
Something like this /could/ work:
SYSFS{bInterfaceClass}="06", SYSFS{bInterfaceSubClass}="01", \
SYSFS{bInterfaceProtocol}="01", RUN+="sh -c 'echo ${DEVPATH%/*}
>> /tmp/perms'"
SUBSYSTEM=udb_device, PROGRAM="grep -q $DEVPATH /tmp/perms", GROUP="plugdev"
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^ permalink raw reply [flat|nested] 2+ messages in thread
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