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Re: [] Adding code for fork/vfork?

From: Andrew W. Nosenko
Subject: Re: [] Adding code for fork/vfork?
Date: Sat, 16 Apr 2011 01:56:28 +0300

On Sat, Apr 16, 2011 at 01:53, Bob Friesenhahn
<address@hidden> wrote:
> On Fri, 15 Apr 2011, Mike Frysinger wrote:
>>> If you do not want to "force" people to change their code, you will
>>> probably need to offer a "stub" fork() to link against on non-MMU CPUs.
>> the majority of the time, it isnt just fork() that needs to change.  any
>> exit() in the child needs to be changed to _exit() too.
> The sole purpose of vfork is to immediately invoke exec()  Any other purpose
> is forbidden.  In what case would an exit even be required?

exec() may fail.  And you need to exit somehow.  Calling of exit() in
such situation is a bad thing because it call atexit handlers.  Thus
you need _exit().

Andrew W. Nosenko <address@hidden>

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