Date: Wed, 29 Jul 1998 00:55:52 +0200 From: Pierre Beyssac <pb@fasterix.freenix.org> To: Terry Lambert <tlambert@primenet.com>, current@FreeBSD.ORG Subject: Re: Diagnostic for those with MMAP problems... Message-ID: <19980729005552.A16035@fasterix.frmug.fr.net> In-Reply-To: <199807280048.RAA16684@usr01.primenet.com>; from Terry Lambert on Tue, Jul 28, 1998 at 12:48:24AM %2B0000 References: <199807280048.RAA16684@usr01.primenet.com>
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On Tue, Jul 28, 1998 at 12:48:24AM +0000, Terry Lambert wrote:
> the first is probably impractical for those repeating the glitch
> using INN, but it's worth mentioning.
I don't care: a good news spool is a trashed news spool :-)
I haven't yet tried the NO_SWAPPING test you suggest; I'm reporting
on the following I just tried:
> 2) Rebuild the software using MMAP; add "PROT_WRITE" to
> the protection request.
Apparently INN 2.0 does this already for the active file (but,
interestingly enough, not for the dbz file when it's open read-only).
>From innd/icd.c:
ICDactpointer = mmap((caddr_t)0, ICDactsize, PROT_READ|PROT_WRITE,
MAP__ARG, ICDactfd, (OFFSET_T)0);
I'm going to try to define MMAP_SYNC to DO to enable the following
code in the same file:
if (msync(ICDactpointer, ICDactsize, MS_ASYNC) < 0) {
syslog(L_FATAL, "%s msync failed %s %m", LogName, ICDactpath);
exit(1);
}
I'll post the results here if anything interesting comes up.
--
Pierre Beyssac pb@fasterix.frmug.org pb@fasterix.freenix.org
{Free,Net,Open}BSD, Linux : il y a moins bien, mais c'est plus cher
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