70 lines
1.6 KiB
C
70 lines
1.6 KiB
C
/* signal( int sig, void (*func)( int ) )
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This file is part of the Public Domain C Library (PDCLib).
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Permission is granted to use, modify, and / or redistribute at will.
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*/
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#include <signal.h>
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#include <errno.h>
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#ifndef REGTEST
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void (*_PDCLIB_sigabrt)( int ) = SIG_DFL;
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void (*_PDCLIB_sigfpe)( int ) = SIG_DFL;
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void (*_PDCLIB_sigill)( int ) = SIG_DFL;
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void (*_PDCLIB_sigint)( int ) = SIG_DFL;
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void (*_PDCLIB_sigsegv)( int ) = SIG_DFL;
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void (*_PDCLIB_sigterm)( int ) = SIG_DFL;
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void (*signal( int sig, void (*func)( int ) ) )( int )
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{
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void (*oldhandler)( int );
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if ( sig <= 0 || func == SIG_ERR )
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{
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return SIG_ERR;
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}
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switch ( sig )
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{
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case SIGABRT:
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oldhandler = _PDCLIB_sigabrt;
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_PDCLIB_sigabrt = func;
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break;
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case SIGFPE:
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oldhandler = _PDCLIB_sigfpe;
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_PDCLIB_sigfpe = func;
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break;
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case SIGILL:
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oldhandler = _PDCLIB_sigill;
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_PDCLIB_sigill = func;
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break;
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case SIGINT:
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oldhandler = _PDCLIB_sigint;
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_PDCLIB_sigint = func;
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break;
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case SIGSEGV:
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oldhandler = _PDCLIB_sigsegv;
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_PDCLIB_sigsegv = func;
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break;
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case SIGTERM:
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oldhandler = _PDCLIB_sigterm;
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_PDCLIB_sigterm = func;
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break;
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default:
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errno = EINVAL;
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return SIG_ERR;
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}
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return oldhandler;
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}
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#endif
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#ifdef TEST
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#include "_PDCLIB_test.h"
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int main( void )
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{
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/* Testing covered by raise.c */
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return TEST_RESULTS;
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}
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#endif
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