[PATCH] epoll_pwait()
commitb611967de4dc5c52049676c4369dcac622a7cdfe
authorDavide Libenzi <davidel@xmailserver.org>
Wed, 11 Oct 2006 08:21:44 +0000 (11 01:21 -0700)
committerLinus Torvalds <torvalds@g5.osdl.org>
Wed, 11 Oct 2006 18:14:21 +0000 (11 11:14 -0700)
tree8c19038c8bbaa4851dcb99bed33707deaf5170d1
parent0f836e5fecf59d0d0353e9af11fd14a32a3001ae
[PATCH] epoll_pwait()

Implement the epoll_pwait system call, that extend the event wait mechanism
with the same logic ppoll and pselect do.  The definition of epoll_pwait
is:

int epoll_pwait(int epfd, struct epoll_event *events, int maxevents,
                 int timeout, const sigset_t *sigmask, size_t sigsetsize);

The difference between the vanilla epoll_wait and epoll_pwait is that the
latter allows the caller to specify a signal mask to be set while waiting
for events.  Hence epoll_pwait will wait until either one monitored event,
or an unmasked signal happen.  If sigmask is NULL, the epoll_pwait system
call will act exactly like epoll_wait.  For the POSIX definition of
pselect, information is available here:

http://www.opengroup.org/onlinepubs/009695399/functions/select.html

Signed-off-by: Davide Libenzi <davidel@xmailserver.org>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Andi Kleen <ak@muc.de>
Cc: Michael Kerrisk <mtk-manpages@gmx.net>
Cc: Ulrich Drepper <drepper@redhat.com>
Cc: Roland McGrath <roland@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
arch/i386/kernel/syscall_table.S
fs/eventpoll.c
include/asm-i386/unistd.h
include/linux/syscalls.h