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Re: Thread-, Signal- and Cancellation-safety documentation

From: Florian Weimer <fweimer at redhat dot com>
To: Rich Felker <dalias at aerifal dot cx>
Cc: Alexandre Oliva <aoliva at redhat dot com>, Torvald Riegel <triegel at redhat dot com>, KOSAKI Motohiro <kosaki dot motohiro at gmail dot com>, libc-alpha <libc-alpha at sourceware dot org>
Date: Tue, 04 Jun 2013 16:27:15 +0200
Subject: Re: Thread-, Signal- and Cancellation-safety documentation
References: <ora9nrh1cz dot fsf at livre dot home> <51A328F0 dot 5020003 at redhat dot com> <ora9ncqlg4 dot fsf at livre dot home> <51A86363 dot 2000900 at redhat dot com> <orip1yq3ek dot fsf at livre dot home> <20130601025934 dot GJ20323 at brightrain dot aerifal dot cx> <or61xxi33w dot fsf at livre dot home> <20130602142028 dot GL20323 at brightrain dot aerifal dot cx> <orli6sh1ju dot fsf at livre dot home> <51ADE0D3 dot 3050102 at redhat dot com> <20130604141945 dot GI29800 at brightrain dot aerifal dot cx>

On 06/04/2013 04:19 PM, Rich Felker wrote:

The clone syscall is not needed; the unshare syscall will do. I don't
know whether it's part of glibc's interface contract for this to work,
but as far as I can tell, pthread_create and calling unshare in the
new thread is safe and usable with most if not all of the current
unshare flags.

The unshare manual page talks about the process, not about the callingprocess. Does it really apply to the thread only? Then we should fixthe manual page.


--
Florian Weimer / Red Hat Product Security Team

Follow-Ups:
- Re: Thread-, Signal- and Cancellation-safety documentation
  - From: Rich Felker

References:
- Re: Thread-, Signal- and Cancellation-safety documentation
  - From: Rich Felker
- Re: Thread-, Signal- and Cancellation-safety documentation
  - From: Alexandre Oliva
- Re: Thread-, Signal- and Cancellation-safety documentation
  - From: Rich Felker
- Re: Thread-, Signal- and Cancellation-safety documentation
  - From: Alexandre Oliva
- Re: Thread-, Signal- and Cancellation-safety documentation
  - From: Florian Weimer
- Re: Thread-, Signal- and Cancellation-safety documentation
  - From: Rich Felker

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