Date: Mon, 4 Feb 2013 02:40:01 GMT From: Eitan Adler <lists@eitanadler.com> To: freebsd-bugs@FreeBSD.org Subject: Re: kern/175674: sem_open() should use O_EXLOCK with open() instead of a separate flock() call Message-ID: <201302040240.r142e1Bd029466@freefall.freebsd.org>
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The following reply was made to PR kern/175674; it has been noted by GNATS. From: Eitan Adler <lists@eitanadler.com> To: bug-followup <bug-followup@freebsd.org> Cc: Subject: Re: kern/175674: sem_open() should use O_EXLOCK with open() instead of a separate flock() call Date: Sun, 3 Feb 2013 21:30:28 -0500 ---------- Forwarded message ---------- From: Eitan Adler <lists@eitanadler.com> Date: 3 February 2013 20:52 Subject: Re: kern/175674: sem_open() should use O_EXLOCK with open() instead of a separate flock() call To: Giorgos Keramidas <keramida@freebsd.org>, Jilles Tjoelker <jilles@stack.nl> Cc: freebsd-bugs@freebsd.org On 3 February 2013 16:00, Giorgos Keramidas <keramida@freebsd.org> wrote: > The following reply was made to PR kern/175674; it has been noted by GNATS. > > The best way to fix this is in kern_openat() in the kernel but this > > might cause compatibility issues. > > Not sure if there would be serious compatibility problems if open() would > automatically restart instead of returning EINTR. It definitely seems a rather > intrusive change though. I can not see major application breakage should open(3) be changed. That said, I am confused by jilles' comment: http://pubs.opengroup.org/onlinepubs/000095399/functions/open.html open(3) is permitted to return EINTR. -- Eitan Adler -- Eitan Adler
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