Re: [PATCH 03/18] flag parameters: paccept

[David Miller <davem@davemloft.net>]

From: Ulrich Drepper <drepper@redhat.com>
Date: Sun, 4 May 2008 23:42:46 -0400

> This patch is by far the most complex in the series.  It adds a new syscall
> paccept.  This syscall differs from accept in that it adds (at the userlevel)
> two additional parameters:
> 
> - a signal mask
> - a flags value
> 
> The flags parameter can be used to set flag like SOCK_CLOEXEC.  This is
> imlpemented here as well.  Some people argued that this is a property
> which should be inherited from the file desriptor for the server but
> this is against POSIX.  Additionally, we really want the signal mask
> parameter as well (similar to pselect, ppoll, etc).  So an interface
> change in inevitable.
> 
> The flag value is the same as for socket and socketpair.  I think
> diverging here will only create confusion.  Similar to the filesystem
> interfaces where the use of the O_* constants differs, it is acceptable
> here.
> 
> The signal mask is handled as for pselect etc.  The mask is temporarily
> installed for the thread and removed before the call returns.  I modeled
> the code after pselect.  If there is a problem it's likely also in
> pselect.
 ...
> Signed-off-by: Ulrich Drepper <drepper@redhat.com>

Acked-by: David S. Miller <davem@davemloft.net>