1/* Copyright (C) 2006-2020 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by Ulrich Drepper <drepper@redhat.com>, 2006.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <https://www.gnu.org/licenses/>. */
18
19#include <sys/select.h>
20#include <sysdep-cancel.h>
21
22int
23__pselect (int nfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds,
24 const struct timespec *timeout, const sigset_t *sigmask)
25{
26 /* The Linux kernel can in some situations update the timeout value.
27 We do not want that so use a local variable. */
28 struct timespec tval;
29 if (timeout != NULL)
30 {
31 tval = *timeout;
32 timeout = &tval;
33 }
34
35 /* Note: the system call expects 7 values but on most architectures
36 we can only pass in 6 directly. If there is an architecture with
37 support for more parameters a new version of this file needs to
38 be created. */
39 struct
40 {
41 __syscall_ulong_t ss;
42 __syscall_ulong_t ss_len;
43 } data;
44
45 data.ss = (__syscall_ulong_t) (uintptr_t) sigmask;
46 data.ss_len = __NSIG_BYTES;
47
48 return SYSCALL_CANCEL (pselect6, nfds, readfds, writefds, exceptfds,
49 timeout, &data);
50}
51#ifndef __pselect
52weak_alias (__pselect, pselect)
53#endif
54