Need suitable target context for writes by netutils_t source context

[Daniel J Walsh]

On 03/16/2010 12:51 PM, Robert Nichols wrote:
> On 03/16/2010 11:22 AM, Daniel J Walsh wrote:
>    
>> On 03/16/2010 11:44 AM, Robert Nichols wrote:
>>      
>>> Where can netutils_t write?  I have ifup_local starting a tcpdump process
>>> that needs to create and write files.  Using 'sesearch' I thought I found
>>> that netutils_t would be a suitable target context, but now my supposedly
>>> unconfined root shell cannot manage files there (write/link/chcon/...).
>>>
>>>
>>>        
>> netutils_t is a process context not a file context.
>>
>>
>> # sesearch -A -s netutils_t -c file -p write
>> Found 4 semantic av rules:
>>       allow domain afs_cache_t : file { read write } ;
>>       allow netutils_t netutils_t : file { ioctl read write getattr lock
>> append open } ;
>>       allow netutils_t logfile : file { ioctl read write getattr lock
>> append open } ;
>>       allow netutils_t netutils_tmp_t : file { ioctl read write create
>> getattr setattr lock append unlink link rename open } ;
>>
>> Looks like netutils_tmp_t is your best option.
>>      
> OK.  Thanks, Dan.
>
> I guess I just have no clue what that second "allow" line, above, means.
>
>    
The sesearch command above says show me all allow rules (-A) with a 
source context type of netutils_t
for a class of file with the permissions write.  Meaning show me all the 
file types that netutils_t can write to.

A better solution might have been to pipe the command to grep for open.

The output indicates to the trained eye, that netutils can open and 
write logfiles, netutils_tmp_t and to /proc files with the same label.  
logfiles is an attribute given to all files types usually in /var/log.
> Should I report it as a bug that system-config-selinux.py allowed me to
> set netutils_t as a file context?
>
>    
Sure, it probably should check.