1250

[ppokorny@penguincomputing.com (Philip Pokorny)]

The magic is in the 'sensors.strace' file that should have been created.

 >> and post the last 20
 >> or 30 lines of the sensors.strace file?.  I'm looking for pairs of
 >> calls to sysctl where the first works and the second has a strange
 >> (???) entry in the first argument to sysctl.

At this point it *does* look like the same problem I had on SuSE...

I've attached the one-line fix...

:v)

David wrote:
> Didn't even get very far to even provide you with useful information. Here are 
> the results though. 
> By the way I am running Gentoo Linux, with gentoo-sources kernel 
> (2.4.20-gentoo-r5)
> 
> The results are:
> 
>>strace -o sensors.strace sensors -s
> 
> 
> ptrace: umoven: Input/output error
> ptrace: umoven: Input/output error
> ptrace: umoven: Input/output error
> ptrace: umoven: Input/output error
> ptrace: umoven: Input/output error
> ptrace: umoven: Input/output error
> ptrace: umoven: Input/output error
> ptrace: umoven: Input/output error
> ptrace: umoven: Input/output error
> via686a-isa-6000: Can't access /proc file for writing;
> Run as root?
> 
> That is as far as it got. Sorry. Thanks for the help.
> 
> Dave
> 
> 
> On Monday 02 June 2003 08:56 pm, you wrote:
> 
>>You shouldn't actually need write permissions to the directory since
>>user-space won't be creating or deleteing files in via686a-isa-6000...
>>
>>And all the individual files have the right permisions...
>>
>>David, what OS are you running on?  I had a similar problem on SuSE
>>Linux 8 for 64-bit Opteron that was caused by sensors_proc_write having
>>it's data violated by some other code...
>>
>>Can you run 'strace -o sensors.strace sensors -s' and post the last 20
>>or 30 lines of the sensors.strace file?.  I'm looking for pairs of calls
>>to sysctl where the first works and the second has a strange (???) entry
>>in the first argument to sysctl.
>>
>>If so, I've got a patch that you can try...
>>
>>:v)
>>
>>Mark D. Studebaker wrote:
>>
>>>devfs could be it. no other good ideas at the moment.
>>>
>>>David wrote:
>>>
>>>>ls -l /proc/sys/dev/sensors
>>>>total 0
>>>>-rw-r--r--    1 root     root            0 Jun  2 10:05 chips
>>>>dr-xr-xr-x    2 root     root            0 Jun  2 09:49 via686a-isa-6000
>>>>
>>>>ls -l /proc/sys/dev/sensors/via*
>>>>total 0
>>>>-r--r--r--    1 root     root            0 Jun  2 10:06 alarms
>>>>-rw-r--r--    1 root     root            0 Jun  2 10:06 fan1
>>>>-rw-r--r--    1 root     root            0 Jun  2 10:06 fan2
>>>>-rw-r--r--    1 root     root            0 Jun  2 10:06 fan_div
>>>>-rw-r--r--    1 root     root            0 Jun  2 10:06 in0
>>>>-rw-r--r--    1 root     root            0 Jun  2 10:06 in1
>>>>-rw-r--r--    1 root     root            0 Jun  2 10:06 in2
>>>>-rw-r--r--    1 root     root            0 Jun  2 10:06 in3
>>>>-rw-r--r--    1 root     root            0 Jun  2 10:06 in4
>>>>-rw-r--r--    1 root     root            0 Jun  2 10:06 temp1
>>>>-rw-r--r--    1 root     root            0 Jun  2 10:06 temp2
>>>>-rw-r--r--    1 root     root            0 Jun  2 10:06 temp3
>>>>
>>>>But even when I change the via686a-isa-6000 folder to have root write
>>>>permissions it doesn't work.
>>>>
>>>>ls -l /proc/sys/dev/sensors
>>>>total 0
>>>>-rw-r--r--    1 root     root            0 Jun  2 10:07 chips
>>>>drwxr-xr-x    2 root     root            0 Jun  2 09:49 via686a-isa-6000
>>>>
>>>>So still get: sensors -s
>>>>via686a-isa-6000: Can't access /proc file for writing;
>>>>Run as root?
>>>>
>>>>I don't think the permission is staying either. Would devfs have
>>>>something to do with this?
>>>
> 



-- 
Philip Pokorny, Director of Engineering
Tel: 415-358-2635   Fax: 415-358-2646   Toll Free: 888-PENGUIN
PENGUIN COMPUTING, INC.
www.penguincomputing.com
-------------- next part --------------
diff -ru --new-file ../_relion1x/lm_sensors-2.7.0/lib/proc.c lm_sensors-2.7.0.adm1026/lib/proc.c
--- ../_relion1x/lm_sensors-2.7.0/lib/proc.c	Sun Nov 10 15:13:38 2002
+++ lm_sensors-2.7.0.adm1026/lib/proc.c	Wed May 28 14:04:25 2003
@@ -184,6 +184,7 @@
   sysctl_name[3] = the_feature->sysctl;
   if (sysctl(sysctl_name, 4, buf, &buflen, NULL, 0))
     return -SENSORS_ERR_PROC;
+  if (sysctl_name[0] != CTL_DEV) { sysctl_name[0] = CTL_DEV ; }
   for (mag = the_feature->scaling; mag > 0; mag --)
     value *= 10.0;
   for (; mag < 0; mag ++)