Bug 476672 - Major number not known
Major number not known
Status: CLOSED NOTABUG
Product: Red Hat Enterprise Linux 5
Classification: Red Hat
Component: udev (Show other bugs)
5.1
All Linux
low Severity medium
: rc
: ---
Assigned To: Harald Hoyer
:
Depends On:
Blocks:
  Show dependency treegraph
 
Reported: 2008-12-16 10:23 EST by David Highley
Modified: 2009-10-13 09:22 EDT (History)
1 user (show)

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Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Environment:
Last Closed: 2009-10-13 09:22:18 EDT
Type: ---
Regression: ---
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CRM:
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oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---


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Description David Highley 2008-12-16 10:23:01 EST
Description of problem:
At execution of rule file kernel major number is not known.

Version-Release number of selected component (if applicable):
udev-095-14.9.el5


How reproducible:
Every time.


Steps to Reproduce:
1.
2.
3.
  
Actual results:


Expected results:


Additional info:
First time we have tried writing a udev rules file for unique hardware. Here is our rules file.
#PROGRAM=="/bin/sh -c "cat /proc/devices | grep -w uceipci | cut -d' ' -f1", MAJOR="%c"
ACTION=="add", SUBSYSTEM=="pci", SYSFS{vendor}=="0x13c6", SYSFS{device}=="0x1553", RUN+="/bin/mknod --mode=666 /dev/uceipci_0 c 253 0" 
ACTION=="add", SUBSYSTEM=="pci", SYSFS{vendor}=="0x13c6", SYSFS{device}=="0x1553", RUN+="/bin/mknod --mode=666 /dev/uceipci_1 c 253 1" 
ACTION=="add", SUBSYSTEM=="pci", SYSFS{vendor}=="0x13c6", SYSFS{device}=="0x1553", RUN+="/bin/mknod --mode=666 /dev/uceipci_2 c 253 2" 
ACTION=="add", SUBSYSTEM=="pci", SYSFS{vendor}=="0x13c6", SYSFS{device}=="0x1553", RUN+="/bin/mknod --mode=666 /dev/uceipci_3 c 253 3" 
ACTION=="add", SUBSYSTEM=="pci", SYSFS{vendor}=="0x13c6", SYSFS{device}=="0x1553", RUN+="/bin/mknod --mode=666 /dev/uceipci_4 c 253 4" 
ACTION=="add", SUBSYSTEM=="pci", SYSFS{vendor}=="0x13c6", SYSFS{device}=="0x1553", RUN+="/bin/mknod --mode=666 /dev/uceipci_5 c 253 5" 
ACTION=="add", SUBSYSTEM=="pci", SYSFS{vendor}=="0x13c6", SYSFS{device}=="0x1553", RUN+="/bin/mknod --mode=666 /dev/uceipci_6 c 253 6" 
ACTION=="add", SUBSYSTEM=="pci", SYSFS{vendor}=="0x13c6", SYSFS{device}=="0x1553", RUN+="/bin/mknod --mode=666 /dev/uceipci_7 c 253 7"

Tried using the first line to define the major number but it did not work. Driver loads but device entries were not being created.
Comment 2 Harald Hoyer 2009-10-13 09:22:18 EDT
This is the totally wrong approach. Fix the kernel module to use the proper sysfs API like all the other modules do.

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