I was wrong in my interpretation of the information provided by man
udevinfo. Thanks for helping me out with that (-a flag).
My question now becomes: should I worry about the permissions on the usb
device, and if so, how do I correct the fact that udev is not using our
rule?
Thanks for the quick responses!
[EMAIL PROTECTED]:/etc/nut# udevinfo -q all -a -p /class/usb_device/usbdev1.21
device '/sys/class/usb_device/usbdev1.21' has major:minor 189:20
looking at class device '/sys/class/usb_device/usbdev1.21':
KERNEL=="usbdev1.21"
SUBSYSTEM=="usb_device"
SYSFS{dev}=="189:20"
follow the "device"-link to the physical device:
looking at the device chain at
'/sys/devices/pci0000:00/0000:00:1d.0/usb1/1-1':
BUS=="usb"
ID=="1-1"
DRIVER=="usb"
SYSFS{bConfigurationValue}=="1"
SYSFS{bDeviceClass}=="00"
SYSFS{bDeviceProtocol}=="00"
SYSFS{bDeviceSubClass}=="00"
SYSFS{bMaxPacketSize0}=="8"
SYSFS{bMaxPower}=="100mA"
SYSFS{bNumConfigurations}=="1"
SYSFS{bNumInterfaces}==" 1"
SYSFS{bcdDevice}=="0010"
SYSFS{bmAttributes}=="a0"
SYSFS{configuration}==""
SYSFS{devnum}=="21"
SYSFS{idProduct}=="2005"
SYSFS{idVendor}=="09ae"
SYSFS{manufacturer}=="Tripp Lite "
SYSFS{maxchild}=="0"
SYSFS{product}=="TRIPP LITE UPS "
SYSFS{serial}=="692199 B "
SYSFS{speed}=="1.5"
SYSFS{version}==" 1.10"
~Brian Foster
Peter Selinger wrote:
Brian Foster wrote:
Hi all,
I guess this is more for the development side of things, rather than for
my own benefit:
In response to the permission problems I was experiencing, I looked at
the udevinfo output for my Tripplite SMART1200LCD, and this is all it
gives me:
[EMAIL PROTECTED]:/$ udevinfo -q all -p /class/usb_device/usbdev1.18
P: /class/usb_device/usbdev1.18
N: bus/usb/001/018
E: USB_BUS=001
E: USB_DEV=018
Did you try running "udevinfo" as root? It seems, if there is a
permission problem, you cannot open the device as a regular user,
hence not get any information about it.
man udevinfo states that these are the attributes that can be used when
making rules for the udev .rules files. The obvious problem is that the
only available information for the Tripplite SMART 1200 USB is its USB
connectivity info, which changes with each unplug and boot. This makes
it next to impossible to form dependable permissions rules. I think
I'll take Peter's advice on his website and just run the apps (upsmon,
upsdrvctl, etc) as root. If anyone has any better solutions, I would
gladly be open to suggestions.
~Brian Foster
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