mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-27 11:55:06 +00:00
79 lines
2.6 KiB
C
79 lines
2.6 KiB
C
/*
|
|
* Copyright 2000 Massachusetts Institute of Technology
|
|
*
|
|
* Permission to use, copy, modify, and distribute this software and
|
|
* its documentation for any purpose and without fee is hereby
|
|
* granted, provided that both the above copyright notice and this
|
|
* permission notice appear in all copies, that both the above
|
|
* copyright notice and this permission notice appear in all
|
|
* supporting documentation, and that the name of M.I.T. not be used
|
|
* in advertising or publicity pertaining to distribution of the
|
|
* software without specific, written prior permission. M.I.T. makes
|
|
* no representations about the suitability of this software for any
|
|
* purpose. It is provided "as is" without express or implied
|
|
* warranty.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY M.I.T. ``AS IS''. M.I.T. DISCLAIMS
|
|
* ALL EXPRESS OR IMPLIED WARRANTIES WITH REGARD TO THIS SOFTWARE,
|
|
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT
|
|
* SHALL M.I.T. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
|
|
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
|
|
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
|
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
|
|
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include "namespace.h"
|
|
#include <sys/select.h>
|
|
#include <sys/time.h>
|
|
|
|
#include <errno.h>
|
|
#include <signal.h>
|
|
#include "un-namespace.h"
|
|
|
|
__weak_reference(__pselect, pselect);
|
|
|
|
/*
|
|
* Emulate the POSIX 1003.1g-2000 `pselect' interface. This is the
|
|
* same as the traditional BSD `select' function, except that it uses
|
|
* a timespec rather than a timeval, doesn't modify the timeout argument,
|
|
* and allows the user to specify a signal mask to apply during the select.
|
|
*/
|
|
int
|
|
__pselect(int count, fd_set * __restrict rfds, fd_set * __restrict wfds,
|
|
fd_set * __restrict efds, const struct timespec * __restrict timo,
|
|
const sigset_t * __restrict mask)
|
|
{
|
|
sigset_t omask;
|
|
struct timeval tvtimo, *tvp;
|
|
int rv, sverrno;
|
|
|
|
if (timo) {
|
|
TIMESPEC_TO_TIMEVAL(&tvtimo, timo);
|
|
tvp = &tvtimo;
|
|
} else
|
|
tvp = 0;
|
|
|
|
if (mask != 0) {
|
|
rv = _sigprocmask(SIG_SETMASK, mask, &omask);
|
|
if (rv != 0)
|
|
return rv;
|
|
}
|
|
|
|
rv = _select(count, rfds, wfds, efds, tvp);
|
|
if (mask != 0) {
|
|
sverrno = errno;
|
|
_sigprocmask(SIG_SETMASK, &omask, (sigset_t *)0);
|
|
errno = sverrno;
|
|
}
|
|
|
|
return rv;
|
|
}
|