20 lines
449 B
C
20 lines
449 B
C
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#include <signal.h>
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/*
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* Uses our bridge in sigaction.s when calling the signal handler.
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* Mimics Linux __NR_signal by using SA_NODEFER | SA_RESETHAND.
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*/
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sighandler_t signal(int signum, sighandler_t handler) {
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struct sigaction new, old;
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int i;
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new.sa_handler = handler;
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new.sa_mask = 0; /* empty set */
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new.sa_flags = SA_NODEFER | SA_RESETHAND;
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i = sigaction(signum, &new, &old);
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if (i < 0)
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return SIG_ERR;
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return old.sa_handler;
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}
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