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