17 lines
286 B
C
17 lines
286 B
C
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#include <signal.h>
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sig_t signal(int sig, sig_t func)
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{
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struct sigaction newsa, oldsa;
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int i;
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newsa.sa_handler = func;
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newsa.sa_mask = 0; /* empty set */
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newsa.sa_flags = SA_RESTART;
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i = sigaction(sig, &newsa, &oldsa);
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if (i < 0)
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return SIG_ERR;
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return oldsa.sa_handler;
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}
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