Date: Sun, 17 Oct 1999 00:31:21 -0600 From: Wes Peters <wes@softweyr.com> To: Kevin Day <toasty@dragondata.com> Cc: Mark Newton <newton@internode.com.au>, Dodge Ram <gupz@hotmail.com>, freebsd-hackers@FreeBSD.ORG Subject: Re: Handling segV's Message-ID: <38096D39.794E9EC0@softweyr.com> References: <199910170524.AAA26797@celery.dragondata.com>
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Kevin Day wrote:
>
> >
> > Kevin Day wrote:
> > >
> > > I mmap() files in, then copy them to a device. This works great except when
> > > someone tries to change that file during the copy. If the size of the file
> > > shrinks, I'll SIGBUS or SIGSEGV when i try to touch past the new file size.
> > > So, i setup a signal handler and longjmp into some recovery code.
> > >
> > > Perhaps there's a better way, but I don't consider this a bug really, and
> > > i'll get a SEGV. :)
> >
> > MAP_PRIVATE?
> >
>
> This has the undesired effect of me not noticing that the file changed then.
stat(2) it after the copy? OK, I'm reaching. Handling SEGV seems like a
rather iffy solution at best.
--
"Where am I, and what am I doing in this handbasket?"
Wes Peters Softweyr LLC
wes@softweyr.com http://softweyr.com/
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