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Re: [Qemu-devel] Missing system calls retries in case of EINTR
From: |
Rob Landley |
Subject: |
Re: [Qemu-devel] Missing system calls retries in case of EINTR |
Date: |
Wed, 11 Jul 2007 13:04:33 -0400 |
User-agent: |
KMail/1.9.6 |
Talking about sigaction(SA_RESTART) vs looping around -EINTR everywhere:
On Tuesday 10 July 2007 8:57:34 pm Yigael Fleishman wrote:
> Rob,
> Thanks, that should also work.
> Seems do_sigaction() in linux-user/signal.c has some code which does that
> (though obviously not for the signal that I'm receiving).
> Any idea why SA_RESTART calls are not invoked by default to restart
> syscalls for all signals?
Fallout from old 1980's-era Unixes that didn't implement SA_RESTART,
basically. Standards like SUSv3 say to humor them, because they paid for the
standard...
http://www.ussg.iu.edu/hypermail/linux/kernel/0507.1/1065.html
> --Yigael
Rob
--
"One of my most productive days was throwing away 1000 lines of code."
- Ken Thompson.