Re: where to look at userspace implementation of fork() and clone()?

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On Tue, 22 Apr 2008, Michael Kerrisk wrote:

> On Mon, Apr 21, 2008 at 10:18 PM, Michael Kerrisk
> <mtk.manpages@xxxxxxxxxxxxxx> wrote:
> > On Mon, Apr 21, 2008 at 10:06 PM, Michael Kerrisk
> > <mtk.manpages@xxxxxxxxxxxxxx> wrote:
> > > On Mon, Apr 21, 2008 at 9:20 PM, Robert P. J. Day <rpjday@xxxxxxxxxxxxxx> wrote:
> > > >
> > > >  in robert love's "linux kernel development" book (p. 31), i read:
> > > >
> > > > "The fork(), vfork() and __clone() library calls all invoke the
> > > > clone() system call with the requisite flags."  assuming that,
> > > > nowadays, it would be __clone2() and not __clone(), where in the
> > > > source for glibc-2.7 could i see the implementation of those calls?
> > >
> > > nptl/sysdeps/unix/sysv/linux/i386/fork.c, for example.
> > >
> > > clone2 is IA-64 only (AFAIK).
> >
> > And for vfork: nptl/sysdeps/unix/sysv/linux/i386/vfork.S
>
> (which means, by the way, that Robert's statement about vfork() isn't
> true, AFAICS)

actually, i was just about to verify that last bit.  i'll get back to
you.

rday
--

========================================================================
Robert P. J. Day
Linux Consulting, Training and Annoying Kernel Pedantry:
    Have classroom, will lecture.

http://crashcourse.ca                          Waterloo, Ontario, CANADA
========================================================================

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