On Fri, Sep 17, 2010 at 8:26 AM, Andi Kleen <andi@xxxxxxxxxxxxxx> wrote: > On Thu, 16 Sep 2010 13:59:59 -0500 > Will Drewry <wad@xxxxxxxxxxxx> wrote: > >> format_corename uses task_tgid_vnr to provide the numeric pid of a >> core-dumping process. For file-based coredumps, this is perfectly >> satisfactory. However, when the core_pattern contains a pipe, the >> substituted PID is invalid in the namespace of the core_pattern pipe >> helper, the init namespace. > > Nasty problem. I wonder how many more similar problems name spaces > have introduced. > > But wouldn't it be better to place the helper into the name space(s) > of the executed process? I guess it would risk breaking some existing > set ups, but it seem like the cleanest solution to me. If you want > to move the core dump out of the name space you could still > use a named pipe or something like that with someone outside listening. > > That would also fix the net namespace problem you mentioned I agree. This was what I did first, but I wasn't confident I'd done it right. I'll go ahead and post the two patches I used to accomplish it. I'm happy to spend some time polishing them until they are functionally correct, if everyone is happy enough with the approach. more to come, will -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
