gallery2 policy

[John Griffiths]

>>     allow httpd_sys_script_t file { getattr read };
>>     
>
> Not sure about this one. What are the httpd_tmp_t files that gallery is
> trying to read?
>
>   
Gallery2 watermark plugin uses graphic packages such as NetPbm, 
ImageMagick, Dcraw, ffmpeg, GD to convert graphic files and re-write 
them with a watermark image superimposed on them. The typical AVC for 
getattr and read are:

    Aug 25 18:06:46 gei kernel: audit(1188079606.937:995): avc:  denied 
    { getattr } for  pid=19252 comm="composite" name="kohokan_com_png"
    dev=dm-0 ino=2163199
    scontext=system_u:system_r:httpd_sys_script_t:s0
    tcontext=system_u:object_r:httpd_tmp_t:s0 tclass=file
    .
    .
    .
    Aug 25 19:07:04 gei kernel: audit(1188083224.885:1066): avc: 
    denied  { read } for  pid=19870 comm="pngtopnm"
    name="kohokan_com_png" dev=dm-0 ino=2163199
    scontext=system_u:system_r:httpd_sys_script_t:s0
    tcontext=system_u:object_r:httpd_tmp_t:s0 tclass=file

The kohokan.com.png is a watermark file that is uploaded through the web 
interface.

>>     #============= httpd_t ==============
>>     allow httpd_t public_content_rw_t:dir { write remove_name
>> add_name }; allow httpd_t public_content_rw_t:file unlink;
>>     
>
> Setting the allow_httpd_anon_write boolean should remove the need for
> these rules.
>   
Thanks. Rules removed and boolean set.
> Paul.