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Re: Adding an option to avoid SIGPIPE for all file descriptors
On Mon, Jan 23, 2012 at 10:58:59PM -0500, Steven Bellovin wrote:
> > I also wonder whether we should also have a note that disabled SIGPIPE.
> > similar to what paxctl does.
> You mean a system-wide flag? That would worry me; I think it would have
> bad effects, since anything that did
> a | b
> would be liable to cause infinite loops if 'a' didn't check the return
> code on the write() or printf() or what have you -- and such programs are
> very common.
I think that is why SIGPIPE exists (but I suspect some shells disable
it because I've sometimes seen - but not investigated - programs
In generate you want that behaviour for shell pipelines, and probably
don't want it anywhere else.
OTOH I've NFI when/why the 'feature' got attached to TCP sockets.
I don't remember it appliying to SYSV.
David Laight: david%l8s.co.uk@localhost
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