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/*-------------------------------------------------------------------------
*
* pqsignal.c--
* reliable BSD-style signal(2) routine stolen from RWW who stole it
* from Stevens...
*
* Copyright (c) 1994, Regents of the University of California
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/interfaces/libpq/pqsignal.c,v 1.1.1.1 1996/07/09 06:22:17 scrappy Exp $
*
* NOTES
* This shouldn't be in libpq, but the monitor and some other
* things need it...
*
*-------------------------------------------------------------------------
*/
#include "libpq/pqsignal.h"
pqsigfunc
pqsignal(int signo, pqsigfunc func)
{
#if defined(USE_POSIX_SIGNALS)
struct sigaction act, oact;
act.sa_handler = func;
sigemptyset(&act.sa_mask);
act.sa_flags = 0;
if (signo != SIGALRM) {
act.sa_flags |= SA_RESTART;
}
if (sigaction(signo, &act, &oact) < 0)
return(SIG_ERR);
return(oact.sa_handler);
#else /* !USE_POSIX_SIGNALS */
exit(1); /* this should never be reached, pqsignal should only
be called if USE_POSIX_SIGNALS is true*/
#endif /* !USE_POSIX_SIGNALS */
}
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