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/*
* Like select(2) but set the signals to block while waiting in
* select. This version is not entirely race condition safe. Only
* operating system support can make it so.
*/
#include <config.h>
#include <sys/time.h>
#include <sys/types.h>
#ifdef HAVE_SYS_SELECT_H
#include <sys/select.h>
#endif
#include <unistd.h>
#include <signal.h>
int
pselect (int n,
fd_set *readfds,
fd_set *writefds,
fd_set *exceptfds,
const struct timespec *timeout,
const sigset_t *sigmask)
{
int result;
sigset_t saved_sigmask;
struct timeval saved_timeout;
if (sigmask && sigprocmask(SIG_SETMASK, sigmask, &saved_sigmask) == -1)
return -1;
if (timeout) {
saved_timeout.tv_sec = timeout->tv_sec;
saved_timeout.tv_usec = timeout->tv_nsec / 1000;
result = select(n, readfds, writefds, exceptfds, &saved_timeout);
} else {
result = select(n, readfds, writefds, exceptfds, NULL);
}
if (sigmask && sigprocmask(SIG_SETMASK, &saved_sigmask, NULL) == -1)
return -1;
return result;
}
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