1 /* ========================================================================
2 * Copyright 1988-2006 University of Washington
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
11 * ========================================================================
15 * Program: POSIX Signals
17 * Author: Mark Crispin
18 * Networks and Distributed Computing
19 * Computing & Communications
20 * University of Washington
21 * Administration Building, AG-44
23 * Internet: MRC@CAC.Washington.EDU
26 * Last Edited: 30 August 2006
37 * Accepts: signal number
42 void *arm_signal (int sig
,void *action
)
44 struct sigaction nact
,oact
;
45 memset (&nact
,0,sizeof (struct sigaction
));
46 sigemptyset (&nact
.sa_mask
); /* no signals blocked */
47 nact
.sa_handler
= action
; /* set signal handler */
48 nact
.sa_flags
= SA_RESTART
; /* needed on Linux, nice on SVR4 */
49 sigaction (sig
,&nact
,&oact
); /* do the signal action */
50 return (void *) oact
.sa_handler
;