* udev: rules using multiple sysfs directories
@ 2005-04-28 19:41 James Macfarlane
2005-04-28 20:28 ` Ian Pilcher
` (7 more replies)
0 siblings, 8 replies; 9+ messages in thread
From: James Macfarlane @ 2005-04-28 19:41 UTC (permalink / raw)
To: linux-hotplug
Hi
I'm new to this list so excuse me if this is a daft question but I've
trawled the archives to no avail.
I've got an example on my machine where it would be really useful if
udev could look at sysfs params on multiple directory levels (see
below). I know from the docs that it can't do this. As a relative udev
newbie, could someone let me know why this is so ?
Many thanks,
James.
Example
-------
This seems to me to be a limitation in the following example: I often
use a PS2 to USB keyboard/mouse adapter with my laptop so I can use an
external keyboard and monitor. I want to generate a persistent name (so
I can use a different keymap under X because it's different layout from
the laptop's built-in keyboard). So, for the udev rule I need to
identify it by SYSFS{product} or SYSFS{serial} or whatever. However,
because the device contains two interfaces (keyboard and mouse), there
are sub directories at this level in sysfs. So I need to be able to
look at bInterfaceProtocol in those lower level directories as well, to
tell if it's the keyboard or the mouse.
Ok, I could write a shell script, or just be sensible and admit that
it's unlikely I'd ever get two USB keyboards connected to one machine
and use bInterfaceClass and bInterfaceProtocol together.
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^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: udev: rules using multiple sysfs directories
2005-04-28 19:41 udev: rules using multiple sysfs directories James Macfarlane
@ 2005-04-28 20:28 ` Ian Pilcher
2005-04-28 21:44 ` Kay Sievers
` (6 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: Ian Pilcher @ 2005-04-28 20:28 UTC (permalink / raw)
To: linux-hotplug
I've got another example -- the AirPrime 5220 1xEVDO wireless modem for
which Greg K-H just whipped out a driver. (Thanks Greg!)
This is a composite device with two serial ports:
Bus 004 Device 004: ID 0f3d:0112
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 1.10
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 16
idVendor 0x0f3d
idProduct 0x0112
bcdDevice 0.01
iManufacturer 1 AirPrime, Incorporated
iProduct 2 AirPrime CDMA Wireless PC Card
iSerial 0
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 62
bNumInterfaces 2
bConfigurationValue 1
iConfiguration 0
bmAttributes 0xc0
Self Powered
MaxPower 100mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 3
bInterfaceClass 255 Vendor Specific Class
bInterfaceSubClass 255 Vendor Specific Subclass
bInterfaceProtocol 255 Vendor Specific Protocol
iInterface 4 Data Interface
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type none
Usage Type Data
wMaxPacketSize 0x0010 bytes 16 once
bInterval 128
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x8a EP 10 IN
bmAttributes 2
Transfer Type Bulk
Synch Type none
Usage Type Data
wMaxPacketSize 0x0040 bytes 64 once
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x0b EP 11 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type none
Usage Type Data
wMaxPacketSize 0x0040 bytes 64 once
bInterval 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 0
bNumEndpoints 2
bInterfaceClass 255 Vendor Specific Class
bInterfaceSubClass 255 Vendor Specific Subclass
bInterfaceProtocol 255 Vendor Specific Protocol
iInterface 4 Data Interface
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x82 EP 2 IN
bmAttributes 2
Transfer Type Bulk
Synch Type none
Usage Type Data
wMaxPacketSize 0x0040 bytes 64 once
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x05 EP 5 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type none
Usage Type Data
wMaxPacketSize 0x0040 bytes 64 once
bInterval 0
Language IDs: (length=4)
0409 English(US)
The first port (bInterfaceNumber 0) is the CDMA modem port; the second
port (bInterfaceNumber 1) is the "control port" which is used for
diagnostic information, etc. I would like to create persistent names
for these two ports (/dev/cdma_modem and /dev/cdma_ctl or something
similar). Since idVendor and idProduct are a directory above
bInterfaceNumber, there doesn't appear to be any way to do this.
This seems like a significant limitation for USB composite devices.
--
====================================
Ian Pilcher i.pilcher@comcast.net
====================================
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^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: udev: rules using multiple sysfs directories
2005-04-28 19:41 udev: rules using multiple sysfs directories James Macfarlane
2005-04-28 20:28 ` Ian Pilcher
@ 2005-04-28 21:44 ` Kay Sievers
2005-04-29 0:59 ` James Macfarlane
` (5 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: Kay Sievers @ 2005-04-28 21:44 UTC (permalink / raw)
To: linux-hotplug
On Thu, 2005-04-28 at 20:41 +0100, James Macfarlane wrote:
> I've got an example on my machine where it would be really useful if
> udev could look at sysfs params on multiple directory levels (see
> below). I know from the docs that it can't do this. As a relative udev
> newbie, could someone let me know why this is so ?
How does:
tree /sys/...
of this device look like?
What does:
udevinfo -a -p /sys/xxx...
print for this device?
I never tried this, but:
SYSFS{product/value}
may work to go into subdirs?
Kay
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* Re: udev: rules using multiple sysfs directories
2005-04-28 19:41 udev: rules using multiple sysfs directories James Macfarlane
2005-04-28 20:28 ` Ian Pilcher
2005-04-28 21:44 ` Kay Sievers
@ 2005-04-29 0:59 ` James Macfarlane
2005-04-29 12:55 ` Ian Pilcher
` (4 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: James Macfarlane @ 2005-04-29 0:59 UTC (permalink / raw)
To: linux-hotplug
On Thursday 28 April 2005 22:44, Kay Sievers wrote:
> How does:
> tree /sys/...
> of this device look like?
>
> What does:
> udevinfo -a -p /sys/xxx...
> print for this device?
See at the bottom of this message.
> I never tried this, but:
> SYSFS{product/value}
> may work to go into subdirs?
Not sure exactly you mean, in terms of syntax. I've just tried
SYSFS{1.0/bInterfaceProtocol} but it didn't seem to work.
udevinfo says: "Only attributes within one device section may be used
together in one rule, to match the device for which the node will be
created." - that seems to indicate it won't work.
I've had a brief delve into the source and it looks unlikely to work
either. It appears to search for attribute names in a pre-existing
list, and everything between the curly braces counts as the attribute
name (btw, I'm looking at ver 056, which is what my distro (debian
testing) uses). So adding '/' is probably not going to work.
It walks the tree and breaks out of the loop once all the key-value
pairs are matched, but it does all the SYSFS pairs in one loop. So
unless all the SYSFS attributes are matched at one level, then the
whole rule fails to match.
Cheers,
James.
Trees
-----
/sys/class/input/
[...]
|-- event2
| |-- dev
| |-- device
-> ../../../devices/pci0000:00/0000:00:1d.7/usb2/2-1/2-1.2/2-1.2:1.0
| `-- driver -> ../../../bus/usb/drivers/usbhid
|-- event3
| |-- dev
| |-- device
-> ../../../devices/pci0000:00/0000:00:1d.7/usb2/2-1/2-1.2/2-1.2:1.1
| `-- driver -> ../../../bus/usb/drivers/usbhid
and:
/sys/devices/pci0000:00/0000:00:1d.7/usb2/2-1/2-1.2/
|-- 2-1.2:1.0
| |-- bAlternateSetting
| |-- bInterfaceClass
| |-- bInterfaceNumber
| |-- bInterfaceProtocol
| |-- bInterfaceSubClass
| |-- bNumEndpoints
| |-- detach_state
| |-- driver -> ../../../../../../../bus/usb/drivers/usbhid
| `-- power
| `-- state
|-- 2-1.2:1.1
| |-- bAlternateSetting
| |-- bInterfaceClass
| |-- bInterfaceNumber
| |-- bInterfaceProtocol
| |-- bInterfaceSubClass
| |-- bNumEndpoints
| |-- detach_state
| |-- driver -> ../../../../../../../bus/usb/drivers/usbhid
| `-- power
| `-- state
|-- bConfigurationValue
|-- bDeviceClass
|-- bDeviceProtocol
|-- bDeviceSubClass
|-- bMaxPower
|-- bNumConfigurations
|-- bNumInterfaces
|-- bcdDevice
|-- bmAttributes
|-- configuration
|-- detach_state
|-- devnum
|-- driver -> ../../../../../../bus/usb/drivers/usb
|-- idProduct
|-- idVendor
|-- manufacturer
|-- maxchild
|-- power
| `-- state
|-- product
|-- speed
`-- version
udevinfo output
---------------
device '/sys/class/input/event2' has major:minor 13:66
looking at class device '/sys/class/input/event2':
SUBSYSTEM="input"
SYSFS{dev}="13:66"
follow the class device's "device"
looking at the device chain at
'/sys/devices/pci0000:00/0000:00:1d.7/usb2/2-1/2-1.2/2-1.2:1.0':
BUS="usb"
ID="2-1.2:1.0"
DRIVER="usbhid"
SYSFS{bAlternateSetting}=" 0"
SYSFS{bInterfaceClass}="03"
SYSFS{bInterfaceNumber}="00"
SYSFS{bInterfaceProtocol}="01"
SYSFS{bInterfaceSubClass}="01"
SYSFS{bNumEndpoints}="01"
SYSFS{detach_state}="0"
looking at the device chain at
'/sys/devices/pci0000:00/0000:00:1d.7/usb2/2-1/2-1.2':
BUS="usb"
ID="2-1.2"
DRIVER="usb"
SYSFS{bConfigurationValue}="1"
SYSFS{bDeviceClass}="00"
SYSFS{bDeviceProtocol}="00"
SYSFS{bDeviceSubClass}="00"
SYSFS{bMaxPower}="100mA"
SYSFS{bNumConfigurations}="1"
SYSFS{bNumInterfaces}=" 2"
SYSFS{bcdDevice}="0001"
SYSFS{bmAttributes}="a0"
SYSFS{configuration}="USB to PS2 Adaptor v1.12"
SYSFS{detach_state}="0"
SYSFS{devnum}="7"
SYSFS{idProduct}="0001"
SYSFS{idVendor}="0518"
SYSFS{manufacturer}="Composite USB PS2 Converter"
SYSFS{maxchild}="0"
SYSFS{product}="USB to PS2 Adaptor v1.12"
SYSFS{speed}="1.5"
SYSFS{version}=" 1.10"
looking at the device chain at
'/sys/devices/pci0000:00/0000:00:1d.7/usb2/2-1':
BUS="usb"
ID="2-1"
DRIVER="usb"
SYSFS{bConfigurationValue}="1"
SYSFS{bDeviceClass}="09"
SYSFS{bDeviceProtocol}="01"
SYSFS{bDeviceSubClass}="00"
SYSFS{bMaxPower}="100mA"
SYSFS{bNumConfigurations}="1"
SYSFS{bNumInterfaces}=" 1"
SYSFS{bcdDevice}="0100"
SYSFS{bmAttributes}="e0"
SYSFS{detach_state}="0"
SYSFS{devnum}="2"
SYSFS{idProduct}="0058"
SYSFS{idVendor}="0409"
SYSFS{manufacturer}="NEC Corporation"
SYSFS{maxchild}="4"
SYSFS{product}="USB2.0 Hub Controller"
SYSFS{speed}="480"
SYSFS{version}=" 2.00"
looking at the device chain at
'/sys/devices/pci0000:00/0000:00:1d.7/usb2':
BUS="usb"
ID="usb2"
DRIVER="usb"
SYSFS{bConfigurationValue}="1"
SYSFS{bDeviceClass}="09"
SYSFS{bDeviceProtocol}="01"
SYSFS{bDeviceSubClass}="00"
SYSFS{bMaxPower}=" 0mA"
SYSFS{bNumConfigurations}="1"
SYSFS{bNumInterfaces}=" 1"
SYSFS{bcdDevice}="0206"
SYSFS{bmAttributes}="e0"
SYSFS{detach_state}="0"
SYSFS{devnum}="1"
SYSFS{idProduct}="0000"
SYSFS{idVendor}="0000"
SYSFS{manufacturer}="Linux 2.6.10blackrock20041231 ehci_hcd"
SYSFS{maxchild}="6"
SYSFS{product}="Intel Corp. 82801DB/DBM (ICH4/ICH4-M) USB 2.0 EHCI
Controller"
SYSFS{serial}="0000:00:1d.7"
SYSFS{speed}="480"
SYSFS{version}=" 2.00"
looking at the device chain at '/sys/devices/pci0000:00/0000:00:1d.7':
BUS="pci"
ID="0000:00:1d.7"
DRIVER="ehci_hcd"
SYSFS{class}="0x0c0320"
SYSFS{detach_state}="0"
SYSFS{device}="0x24cd"
SYSFS{irq}="11"
SYSFS{local_cpus}="1"
SYSFS{subsystem_device}="0x0001"
SYSFS{subsystem_vendor}="0x1179"
SYSFS{vendor}="0x8086"
looking at the device chain at '/sys/devices/pci0000:00':
BUS=""
ID="pci0000:00"
DRIVER="unknown"
SYSFS{detach_state}="0"
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^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: udev: rules using multiple sysfs directories
2005-04-28 19:41 udev: rules using multiple sysfs directories James Macfarlane
` (2 preceding siblings ...)
2005-04-29 0:59 ` James Macfarlane
@ 2005-04-29 12:55 ` Ian Pilcher
2005-04-29 17:13 ` James Macfarlane
` (3 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: Ian Pilcher @ 2005-04-29 12:55 UTC (permalink / raw)
To: linux-hotplug
James Macfarlane wrote:
> I've had a brief delve into the source and it looks unlikely to work
> either. It appears to search for attribute names in a pre-existing
> list, and everything between the curly braces counts as the attribute
> name (btw, I'm looking at ver 056, which is what my distro (debian
> testing) uses). So adding '/' is probably not going to work.
>
> It walks the tree and breaks out of the loop once all the key-value
> pairs are matched, but it does all the SYSFS pairs in one loop. So
> unless all the SYSFS attributes are matched at one level, then the
> whole rule fails to match.
Out of curiosity, what file/line # is this at?
TIA.
--
====================================
Ian Pilcher i.pilcher@comcast.net
====================================
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^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: udev: rules using multiple sysfs directories
2005-04-28 19:41 udev: rules using multiple sysfs directories James Macfarlane
` (3 preceding siblings ...)
2005-04-29 12:55 ` Ian Pilcher
@ 2005-04-29 17:13 ` James Macfarlane
2005-04-29 18:15 ` Kay Sievers
` (2 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: James Macfarlane @ 2005-04-29 17:13 UTC (permalink / raw)
To: linux-hotplug
On Friday 29 April 2005 13:55, Ian Pilcher wrote:
> Out of curiosity, what file/line # is this at?
udev_rules.c, around line 623 onwards
James.
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* Re: udev: rules using multiple sysfs directories
2005-04-28 19:41 udev: rules using multiple sysfs directories James Macfarlane
` (4 preceding siblings ...)
2005-04-29 17:13 ` James Macfarlane
@ 2005-04-29 18:15 ` Kay Sievers
2005-04-29 20:09 ` Greg KH
2005-04-30 0:44 ` Ian Pilcher
7 siblings, 0 replies; 9+ messages in thread
From: Kay Sievers @ 2005-04-29 18:15 UTC (permalink / raw)
To: linux-hotplug
On Fri, 2005-04-29 at 01:59 +0100, James Macfarlane wrote:
> On Thursday 28 April 2005 22:44, Kay Sievers wrote:
> > How does:
> > tree /sys/...
> > of this device look like?
> >
> > What does:
> > udevinfo -a -p /sys/xxx...
> > print for this device?
>
> See at the bottom of this message.
>
> > I never tried this, but:
> > SYSFS{product/value}
> > may work to go into subdirs?
>
> Not sure exactly you mean, in terms of syntax. I've just tried
> SYSFS{1.0/bInterfaceProtocol} but it didn't seem to work.
>
> udevinfo says: "Only attributes within one device section may be used
> together in one rule, to match the device for which the node will be
> created." - that seems to indicate it won't work.
Yes that is right, but you can specify a path as attribute.
Example:
[root@pim udev]# tree /sys/block/hda/
/sys/block/hda/
|-- dev
|-- hda1
| |-- dev
| |-- size
| |-- start
| `-- stat
|-- queue
| |-- iosched
| | |-- antic_expire
| | |-- est_time
| | |-- read_batch_expire
| | |-- read_expire
| | |-- write_batch_expire
| | `-- write_expire
| |-- max_hw_sectors_kb
| |-- max_sectors_kb
| |-- nr_requests
| |-- read_ahead_kb
| `-- scheduler
|-- range
|-- removable
|-- size
`-- stat
This matches:
KERNEL="hda", SYSFS{queue/iosched/est_time}="*", SYSFS{removable}="*", NAME="test"
> I've had a brief delve into the source and it looks unlikely to work
> either. It appears to search for attribute names in a pre-existing
> list, and everything between the curly braces counts as the attribute
> name (btw, I'm looking at ver 056, which is what my distro (debian
> testing) uses). So adding '/' is probably not going to work.
Only in the way mentioned above, as a path.
> It walks the tree and breaks out of the loop once all the key-value
> pairs are matched, but it does all the SYSFS pairs in one loop. So
> unless all the SYSFS attributes are matched at one level, then the
> whole rule fails to match.
Right.
But in your case, it may be the easiest to write a PROGRAM-script to
catch your device...
Good luck,
Kay
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^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: udev: rules using multiple sysfs directories
2005-04-28 19:41 udev: rules using multiple sysfs directories James Macfarlane
` (5 preceding siblings ...)
2005-04-29 18:15 ` Kay Sievers
@ 2005-04-29 20:09 ` Greg KH
2005-04-30 0:44 ` Ian Pilcher
7 siblings, 0 replies; 9+ messages in thread
From: Greg KH @ 2005-04-29 20:09 UTC (permalink / raw)
To: linux-hotplug
On Thu, Apr 28, 2005 at 03:28:31PM -0500, Ian Pilcher wrote:
> I've got another example -- the AirPrime 5220 1xEVDO wireless modem for
> which Greg K-H just whipped out a driver. (Thanks Greg!)
>
> This is a composite device with two serial ports:
>
> Bus 004 Device 004: ID 0f3d:0112
> Device Descriptor:
> bLength 18
> bDescriptorType 1
> bcdUSB 1.10
> bDeviceClass 0 (Defined at Interface level)
> bDeviceSubClass 0
> bDeviceProtocol 0
> bMaxPacketSize0 16
> idVendor 0x0f3d
> idProduct 0x0112
> bcdDevice 0.01
> iManufacturer 1 AirPrime, Incorporated
> iProduct 2 AirPrime CDMA Wireless PC Card
> iSerial 0
> bNumConfigurations 1
> Configuration Descriptor:
> bLength 9
> bDescriptorType 2
> wTotalLength 62
> bNumInterfaces 2
> bConfigurationValue 1
> iConfiguration 0
> bmAttributes 0xc0
> Self Powered
> MaxPower 100mA
> Interface Descriptor:
> bLength 9
> bDescriptorType 4
> bInterfaceNumber 0
> bAlternateSetting 0
> bNumEndpoints 3
> bInterfaceClass 255 Vendor Specific Class
> bInterfaceSubClass 255 Vendor Specific Subclass
> bInterfaceProtocol 255 Vendor Specific Protocol
> iInterface 4 Data Interface
> Endpoint Descriptor:
> bLength 7
> bDescriptorType 5
> bEndpointAddress 0x81 EP 1 IN
> bmAttributes 3
> Transfer Type Interrupt
> Synch Type none
> Usage Type Data
> wMaxPacketSize 0x0010 bytes 16 once
> bInterval 128
> Endpoint Descriptor:
> bLength 7
> bDescriptorType 5
> bEndpointAddress 0x8a EP 10 IN
> bmAttributes 2
> Transfer Type Bulk
> Synch Type none
> Usage Type Data
> wMaxPacketSize 0x0040 bytes 64 once
> bInterval 0
> Endpoint Descriptor:
> bLength 7
> bDescriptorType 5
> bEndpointAddress 0x0b EP 11 OUT
> bmAttributes 2
> Transfer Type Bulk
> Synch Type none
> Usage Type Data
> wMaxPacketSize 0x0040 bytes 64 once
> bInterval 0
> Interface Descriptor:
> bLength 9
> bDescriptorType 4
> bInterfaceNumber 1
> bAlternateSetting 0
> bNumEndpoints 2
> bInterfaceClass 255 Vendor Specific Class
> bInterfaceSubClass 255 Vendor Specific Subclass
> bInterfaceProtocol 255 Vendor Specific Protocol
> iInterface 4 Data Interface
> Endpoint Descriptor:
> bLength 7
> bDescriptorType 5
> bEndpointAddress 0x82 EP 2 IN
> bmAttributes 2
> Transfer Type Bulk
> Synch Type none
> Usage Type Data
> wMaxPacketSize 0x0040 bytes 64 once
> bInterval 0
> Endpoint Descriptor:
> bLength 7
> bDescriptorType 5
> bEndpointAddress 0x05 EP 5 OUT
> bmAttributes 2
> Transfer Type Bulk
> Synch Type none
> Usage Type Data
> wMaxPacketSize 0x0040 bytes 64 once
> bInterval 0
> Language IDs: (length=4)
> 0409 English(US)
>
> The first port (bInterfaceNumber 0) is the CDMA modem port; the second
> port (bInterfaceNumber 1) is the "control port" which is used for
> diagnostic information, etc. I would like to create persistent names
> for these two ports (/dev/cdma_modem and /dev/cdma_ctl or something
> similar). Since idVendor and idProduct are a directory above
> bInterfaceNumber, there doesn't appear to be any way to do this.
You can do this, as you get two different hotplug events. This is
because usb drivers bind to the USB inteface, not the main device
itself.
> This seems like a significant limitation for USB composite devices.
No, all USB devices work like this.
I'll try to make a udev rule that would work for this, can you send me
the output of udevinfo for this:
udevinfo -a /sys/class/tty/ttyUSB0
udevinfo -a /sys/class/tty/ttyUSB1
thanks,
greg k-h
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^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: udev: rules using multiple sysfs directories
2005-04-28 19:41 udev: rules using multiple sysfs directories James Macfarlane
` (6 preceding siblings ...)
2005-04-29 20:09 ` Greg KH
@ 2005-04-30 0:44 ` Ian Pilcher
7 siblings, 0 replies; 9+ messages in thread
From: Ian Pilcher @ 2005-04-30 0:44 UTC (permalink / raw)
To: linux-hotplug
Greg KH wrote:
> On Thu, Apr 28, 2005 at 03:28:31PM -0500, Ian Pilcher wrote:
>
>>This seems like a significant limitation for USB composite devices.
>
>
> No, all USB devices work like this.
If I'm correct about what can't be done, there's no way to write a rule
which identifies a device by vendor, product, and interface. It's
possible to do vendor and product, so the limitation only affects
composite devices.
>
> I'll try to make a udev rule that would work for this, can you send me
> the output of udevinfo for this:
> udevinfo -a /sys/class/tty/ttyUSB0
> udevinfo -a /sys/class/tty/ttyUSB1
ttyUSB0 (the modem):
looking at class device '/sys/class/tty/ttyUSB0':
SYSFS{dev}="188:0"
follow the class device's "device"
looking at the device chain at
'/sys/devices/pci0000:00/0000:00:1e.0/0000:02:00.0/0000:03:00.0/usb4/4-1/4-1:1.0/ttyUSB0':
BUS="usb-serial"
ID="ttyUSB0"
SYSFS{detach_state}="0"
looking at the device chain at
'/sys/devices/pci0000:00/0000:00:1e.0/0000:02:00.0/0000:03:00.0/usb4/4-1/4-1:1.0':
BUS="usb"
ID="4-1:1.0"
SYSFS{bAlternateSetting}=" 0"
SYSFS{bInterfaceClass}="ff"
SYSFS{bInterfaceNumber}="00"
SYSFS{bInterfaceProtocol}="ff"
SYSFS{bInterfaceSubClass}="ff"
SYSFS{bNumEndpoints}="03"
SYSFS{detach_state}="0"
SYSFS{iInterface}="04"
looking at the device chain at
'/sys/devices/pci0000:00/0000:00:1e.0/0000:02:00.0/0000:03:00.0/usb4/4-1':
BUS="usb"
ID="4-1"
SYSFS{bConfigurationValue}="1"
SYSFS{bDeviceClass}="00"
SYSFS{bDeviceProtocol}="00"
SYSFS{bDeviceSubClass}="00"
SYSFS{bMaxPower}="100mA"
SYSFS{bNumConfigurations}="1"
SYSFS{bNumInterfaces}=" 2"
SYSFS{bcdDevice}="0001"
SYSFS{bmAttributes}="c0"
SYSFS{detach_state}="0"
SYSFS{devnum}="4"
SYSFS{idProduct}="0112"
SYSFS{idVendor}="0f3d"
SYSFS{manufacturer}="AirPrime, Incorporated"
SYSFS{maxchild}="0"
SYSFS{product}="AirPrime CDMA Wireless PC Card"
SYSFS{speed}="12"
SYSFS{version}=" 1.10"
looking at the device chain at
'/sys/devices/pci0000:00/0000:00:1e.0/0000:02:00.0/0000:03:00.0/usb4':
BUS="usb"
ID="usb4"
SYSFS{bConfigurationValue}="1"
SYSFS{bDeviceClass}="09"
SYSFS{bDeviceProtocol}="00"
SYSFS{bDeviceSubClass}="00"
SYSFS{bMaxPower}=" 0mA"
SYSFS{bNumConfigurations}="1"
SYSFS{bNumInterfaces}=" 1"
SYSFS{bcdDevice}="0206"
SYSFS{bmAttributes}="c0"
SYSFS{detach_state}="0"
SYSFS{devnum}="1"
SYSFS{idProduct}="0000"
SYSFS{idVendor}="0000"
SYSFS{manufacturer}="Linux 2.6.9-5.EL.root.evdo ohci_hcd"
SYSFS{maxchild}="2"
SYSFS{product}="OHCI Host Controller"
SYSFS{serial}="0000:03:00.0"
SYSFS{speed}="12"
SYSFS{version}=" 1.10"
looking at the device chain at
'/sys/devices/pci0000:00/0000:00:1e.0/0000:02:00.0/0000:03:00.0':
BUS="pci"
ID="0000:03:00.0"
SYSFS{class}="0x0c0310"
SYSFS{detach_state}="0"
SYSFS{device}="0x5802"
SYSFS{irq}="11"
SYSFS{subsystem_device}="0x5802"
SYSFS{subsystem_vendor}="0x11c1"
SYSFS{vendor}="0x11c1"
looking at the device chain at
'/sys/devices/pci0000:00/0000:00:1e.0/0000:02:00.0':
BUS="pci"
ID="0000:02:00.0"
SYSFS{class}="0x060700"
SYSFS{detach_state}="0"
SYSFS{device}="0xac55"
SYSFS{irq}="11"
SYSFS{subsystem_device}="0x0512"
SYSFS{subsystem_vendor}="0x1014"
SYSFS{vendor}="0x104c"
looking at the device chain at '/sys/devices/pci0000:00/0000:00:1e.0':
BUS="pci"
ID="0000:00:1e.0"
SYSFS{class}="0x060400"
SYSFS{detach_state}="0"
SYSFS{device}="0x2448"
SYSFS{irq}="0"
SYSFS{subsystem_device}="0x0000"
SYSFS{subsystem_vendor}="0x0000"
SYSFS{vendor}="0x8086"
looking at the device chain at '/sys/devices/pci0000:00':
BUS=""
ID="pci0000:00"
SYSFS{detach_state}="0"
ttyUSB1 (the "control port"):
looking at class device '/sys/class/tty/ttyUSB1':
SYSFS{dev}="188:1"
follow the class device's "device"
looking at the device chain at
'/sys/devices/pci0000:00/0000:00:1e.0/0000:02:00.0/0000:03:00.0/usb4/4-1/4-1:1.1/ttyUSB1':
BUS="usb-serial"
ID="ttyUSB1"
SYSFS{detach_state}="0"
looking at the device chain at
'/sys/devices/pci0000:00/0000:00:1e.0/0000:02:00.0/0000:03:00.0/usb4/4-1/4-1:1.1':
BUS="usb"
ID="4-1:1.1"
SYSFS{bAlternateSetting}=" 0"
SYSFS{bInterfaceClass}="ff"
SYSFS{bInterfaceNumber}="01"
SYSFS{bInterfaceProtocol}="ff"
SYSFS{bInterfaceSubClass}="ff"
SYSFS{bNumEndpoints}="02"
SYSFS{detach_state}="0"
SYSFS{iInterface}="04"
looking at the device chain at
'/sys/devices/pci0000:00/0000:00:1e.0/0000:02:00.0/0000:03:00.0/usb4/4-1':
BUS="usb"
ID="4-1"
SYSFS{bConfigurationValue}="1"
SYSFS{bDeviceClass}="00"
SYSFS{bDeviceProtocol}="00"
SYSFS{bDeviceSubClass}="00"
SYSFS{bMaxPower}="100mA"
SYSFS{bNumConfigurations}="1"
SYSFS{bNumInterfaces}=" 2"
SYSFS{bcdDevice}="0001"
SYSFS{bmAttributes}="c0"
SYSFS{detach_state}="0"
SYSFS{devnum}="4"
SYSFS{idProduct}="0112"
SYSFS{idVendor}="0f3d"
SYSFS{manufacturer}="AirPrime, Incorporated"
SYSFS{maxchild}="0"
SYSFS{product}="AirPrime CDMA Wireless PC Card"
SYSFS{speed}="12"
SYSFS{version}=" 1.10"
looking at the device chain at
'/sys/devices/pci0000:00/0000:00:1e.0/0000:02:00.0/0000:03:00.0/usb4':
BUS="usb"
ID="usb4"
SYSFS{bConfigurationValue}="1"
SYSFS{bDeviceClass}="09"
SYSFS{bDeviceProtocol}="00"
SYSFS{bDeviceSubClass}="00"
SYSFS{bMaxPower}=" 0mA"
SYSFS{bNumConfigurations}="1"
SYSFS{bNumInterfaces}=" 1"
SYSFS{bcdDevice}="0206"
SYSFS{bmAttributes}="c0"
SYSFS{detach_state}="0"
SYSFS{devnum}="1"
SYSFS{idProduct}="0000"
SYSFS{idVendor}="0000"
SYSFS{manufacturer}="Linux 2.6.9-5.EL.root.evdo ohci_hcd"
SYSFS{maxchild}="2"
SYSFS{product}="OHCI Host Controller"
SYSFS{serial}="0000:03:00.0"
SYSFS{speed}="12"
SYSFS{version}=" 1.10"
looking at the device chain at
'/sys/devices/pci0000:00/0000:00:1e.0/0000:02:00.0/0000:03:00.0':
BUS="pci"
ID="0000:03:00.0"
SYSFS{class}="0x0c0310"
SYSFS{detach_state}="0"
SYSFS{device}="0x5802"
SYSFS{irq}="11"
SYSFS{subsystem_device}="0x5802"
SYSFS{subsystem_vendor}="0x11c1"
SYSFS{vendor}="0x11c1"
looking at the device chain at
'/sys/devices/pci0000:00/0000:00:1e.0/0000:02:00.0':
BUS="pci"
ID="0000:02:00.0"
SYSFS{class}="0x060700"
SYSFS{detach_state}="0"
SYSFS{device}="0xac55"
SYSFS{irq}="11"
SYSFS{subsystem_device}="0x0512"
SYSFS{subsystem_vendor}="0x1014"
SYSFS{vendor}="0x104c"
looking at the device chain at '/sys/devices/pci0000:00/0000:00:1e.0':
BUS="pci"
ID="0000:00:1e.0"
SYSFS{class}="0x060400"
SYSFS{detach_state}="0"
SYSFS{device}="0x2448"
SYSFS{irq}="0"
SYSFS{subsystem_device}="0x0000"
SYSFS{subsystem_vendor}="0x0000"
SYSFS{vendor}="0x8086"
looking at the device chain at '/sys/devices/pci0000:00':
BUS=""
ID="pci0000:00"
SYSFS{detach_state}="0"
Thanks!
--
====================================
Ian Pilcher i.pilcher@comcast.net
====================================
-------------------------------------------------------
This SF.Net email is sponsored by: NEC IT Guy Games.
Get your fingers limbered up and give it your best shot. 4 great events, 4
opportunities to win big! Highest score wins.NEC IT Guy Games. Play to
win an NEC 61 plasma display. Visit http://www.necitguy.com/?r
_______________________________________________
Linux-hotplug-devel mailing list http://linux-hotplug.sourceforge.net
Linux-hotplug-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/linux-hotplug-devel
^ permalink raw reply [flat|nested] 9+ messages in thread
end of thread, other threads:[~2005-04-30 0:44 UTC | newest]
Thread overview: 9+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2005-04-28 19:41 udev: rules using multiple sysfs directories James Macfarlane
2005-04-28 20:28 ` Ian Pilcher
2005-04-28 21:44 ` Kay Sievers
2005-04-29 0:59 ` James Macfarlane
2005-04-29 12:55 ` Ian Pilcher
2005-04-29 17:13 ` James Macfarlane
2005-04-29 18:15 ` Kay Sievers
2005-04-29 20:09 ` Greg KH
2005-04-30 0:44 ` Ian Pilcher
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