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SubjectRe: [PATCH 02/18] flag parameters: paccept
On Tue, 6 May 2008 17:18:07 -0400 Ulrich Drepper <drepper@redhat.com> wrote:

> 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.
>
> For architectures which use socketcall I maintained this interface
> instead of adding a system call. The symmetry shouldn't be broken.
>
> The following test must be adjusted for architectures other than x86 and
> x86-64 and in case the syscall numbers changed.

Am getting moderately bored of these patches :(

arm exploded thusly:

net/socket.c: In function `sys_paccept':
net/socket.c:1534: error: implicit declaration of function `set_restore_sigmask'

because afacit arm doesn't implement set_restore_sigmask() and nor does
it need to, because it doesn't set HAVE_SET_RESTORE_SIGMASK.

I will continue to fumble along in the rc2-mm1 direction. Fixes against that
kernel would suit, thanks.


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