28 lines
842 B
C
28 lines
842 B
C
#include "lib.h"
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#include <signal.h>
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int (*vectab[NSIG])(); /* array of functions to catch signals */
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/* The definition of signal really should be
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* PUBLIC int (*signal(signr, func))()
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* but some compilers refuse to accept this, even though it is correct.
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* The only thing to do if you are stuck with such a defective compiler is
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* change it to
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* PUBLIC int *signal(signr, func)
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* and change ../h/signal.h accordingly.
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*/
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PUBLIC int (*signal(signr, func))()
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int signr; /* which signal is being set */
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int (*func)(); /* pointer to function that catches signal */
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{
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int r,(*old)();
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old = vectab[signr - 1];
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vectab[signr - 1] = func;
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M.m6_i1 = signr;
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M.m6_f1 = ( (func == SIG_IGN || func == SIG_DFL) ? func : begsig);
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r = callx(MM, SIGNAL);
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if (r == 1) old = SIG_IGN;
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return( (r < 0 ? (int (*)()) r : old) );
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}
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