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/*
* bsdsignal.c
*
* Use sigaction() to simulate BSD signal()
*/
#include "config.h"
void (*bsd_signal(int signum, void (*handler) (int))) (int) {
struct sigaction action, oldaction;
memset(&action, 0, sizeof action);
action.sa_handler = handler;
sigemptyset(&action.sa_mask);
sigaddset(&action.sa_mask, signum);
action.sa_flags = SA_RESTART;
if (sigaction(signum, &action, &oldaction) == -1) {
#ifdef SIG_ERR
return SIG_ERR;
#else
return NULL;
#endif
}
return oldaction.sa_handler;
}
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