1 /* Copyright (C) 2006, 2007 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by Ulrich Drepper <drepper@redhat.com>, 2006.
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.
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.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, write to the Free
17 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
24 #include <kernel-features.h>
25 #include <sysdep-cancel.h>
29 # ifndef __ASSUME_PSELECT
30 static int __generic_pselect (int nfds, fd_set *readfds, fd_set *writefds,
32 const struct timespec *timeout,
33 const sigset_t *sigmask);
38 __pselect (int nfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds,
39 const struct timespec *timeout, const sigset_t *sigmask)
41 /* The Linux kernel can in some situations update the timeout value.
42 We do not want that so use a local variable. */
50 /* Note: the system call expects 7 values but on most architectures
51 we can only pass in 6 directly. If there is an architecture with
52 support for more parameters a new version of this file needs to
61 data.ss_len = _NSIG / 8;
66 # define CALL_PSELECT6(nfds, readfds, writefds, exceptfds, timeout, data) \
67 INLINE_SYSCALL (pselect6, 6, nfds, readfds, writefds, exceptfds, \
72 result = CALL_PSELECT6 (nfds, readfds, writefds, exceptfds, timeout,
76 int oldtype = LIBC_CANCEL_ASYNC ();
78 result = CALL_PSELECT6 (nfds, readfds, writefds, exceptfds, timeout,
81 LIBC_CANCEL_RESET (oldtype);
84 # ifndef __ASSUME_PSELECT
85 if (result == -1 && errno == ENOSYS)
86 result = __generic_pselect (nfds, readfds, writefds, exceptfds, timeout,
92 weak_alias (__pselect, pselect)
93 strong_alias (__pselect, __libc_pselect)
95 # ifndef __ASSUME_PSELECT
96 # define __pselect static __generic_pselect
100 #ifndef __ASSUME_PSELECT
101 # include <misc/pselect.c>