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#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <stdio.h>
#include <sys/types.h>
#include <signal.h>
#include "ntp_syslog.h"
#include "ntp_stdlib.h"
#ifdef HAVE_SIGACTION
void
signal_no_reset(
#if defined(__STDC__) || defined(HAVE_STDARG_H)
int sig,
void (*func) (int)
#else
sig, func
#endif
)
#if defined(__STDC__) || defined(HAVE_STDARG_H)
#else
int sig;
void (*func) P((int));
#endif
{
int n;
struct sigaction vec;
vec.sa_handler = func;
sigemptyset(&vec.sa_mask);
#if 0
#ifdef SA_RESTART
vec.sa_flags = SA_RESTART;
#else
vec.sa_flags = 0;
#endif
#else
vec.sa_flags = 0;
#endif
#ifdef SA_RESTART
/* Added for PPS clocks on Solaris 7 which get EINTR errors */
# ifdef SIGPOLL
if (sig == SIGPOLL) vec.sa_flags = SA_RESTART;
# endif
# ifdef SIGIO
if (sig == SIGIO) vec.sa_flags = SA_RESTART;
# endif
#endif
while (1)
{
struct sigaction ovec;
n = sigaction(sig, &vec, &ovec);
if (n == -1 && errno == EINTR) continue;
if (ovec.sa_flags
#ifdef SA_RESTART
&& ovec.sa_flags != SA_RESTART
#endif
)
msyslog(LOG_DEBUG, "signal_no_reset: signal %d had flags %x",
sig, ovec.sa_flags);
break;
}
if (n == -1) {
perror("sigaction");
exit(1);
}
}
#elif HAVE_SIGVEC
void
signal_no_reset(
int sig,
RETSIGTYPE (*func) (int)
)
{
struct sigvec sv;
int n;
bzero((char *) &sv, sizeof(sv));
sv.sv_handler = func;
n = sigvec(sig, &sv, (struct sigvec *)NULL);
if (n == -1) {
perror("sigvec");
exit(1);
}
}
#elif HAVE_SIGSET
void
signal_no_reset(
int sig,
RETSIGTYPE (*func) (int)
)
{
int n;
n = sigset(sig, func);
if (n == -1) {
perror("sigset");
exit(1);
}
}
#else
/* Beware! This implementation resets the signal to SIG_DFL */
void
signal_no_reset(
int sig,
RETSIGTYPE (*func) (int)
)
{
#ifdef SIG_ERR
if (SIG_ERR == signal(sig, func)) {
#else
int n;
n = signal(sig, func);
if (n == -1) {
#endif
perror("signal");
exit(1);
}
}
#endif
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