On Mon, 2 Mar 2009, Timo Sirainen wrote: > > I tried using a pristine 1.1.11 source build with a > > core_pattern directory that was owned by root, or by > > dovecot, or by the user, but I still didn't see a core > > there. > > In my setups it core dumps to the user's home directory > just fine. > > Can you make any program dump core? For example: > > sleep 5 & > kill -SEGV %1
Yes, that dumps a core, even as this user. I had to change core_pattern back to 'core' though, using /tmp didn't work, even though I can dump the core in /tmp. Well, a core pattern of '/tmp/core.%p' does work for sleep/kill, but still not for the test user with the dovecot failure. > > > Could it be that dovecot uses setuid to change > > > permissions? Application would need > > > 'prctl(PR_SET_DUMPABLE, 1);' > > > > Interesting. I hadn't known about this before. I'll > > definitely look into this and enable it if it appears to > > work. > > Done, also improved logging: > > http://hg.dovecot.org/dovecot-1.1/rev/6e9ca7f7e2a1 Nope. Applied this to a pristine source. Still nothing. I don't have time to work on this anymore. I have learned that fighting malfunctioning systems like this is a waste of time/money. Thanks for fixing the actual problem, though! I look forward to 1.1.12. Mark
