reactos/lib/sdk/crt/signal/signal.c

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#include <precomp.h>
#include "include/internal/wine/msvcrt.h"
static sig_element signal_list[] =
{
{ SIGINT, "CTRL+C",SIG_DFL },
{ SIGILL, "Illegal instruction",SIG_DFL },
{ SIGFPE, "Floating-point exception",SIG_DFL },
{ SIGSEGV, "Illegal storage access",SIG_DFL },
{ SIGTERM, "Termination request",SIG_DFL },
{ SIGBREAK, "CTRL+BREAK",SIG_DFL },
{ SIGABRT, "Abnormal termination",SIG_DFL }
};
//int nsignal = 21;
/*
* @implemented
*/
//void ( *signal( int sig, void (__cdecl *func) ( int sig [, int subcode ] )) ) ( int sig );
__p_sig_fn_t signal(int sig, __p_sig_fn_t func)
{
__p_sig_fn_t temp;
unsigned int i;
switch (sig)
{
case SIGINT:
case SIGILL:
case SIGFPE:
case SIGSEGV:
case SIGTERM:
case SIGBREAK:
case SIGABRT:
break;
default:
__set_errno(EINVAL);
return SIG_ERR;
}
// check with IsBadCodePtr
if ( func < (__p_sig_fn_t)4096 && func != SIG_DFL && func != SIG_IGN)
{
__set_errno(EINVAL);
return SIG_ERR;
}
for(i=0; i < sizeof(signal_list)/sizeof(signal_list[0]); i++)
{
if ( signal_list[i].signal == sig )
{
temp = signal_list[i].handler;
signal_list[i].handler = func;
return temp;
}
}
/* should be impossible to get here */
__set_errno(EINVAL);
return SIG_ERR;
}
/*
* @implemented
*/
int
raise(int sig)
{
__p_sig_fn_t temp = 0;
unsigned int i;
switch (sig)
{
case SIGINT:
case SIGILL:
case SIGFPE:
case SIGSEGV:
case SIGTERM:
case SIGBREAK:
case SIGABRT:
break;
default:
//FIXME: set last err?
return -1;
}
// if(sig <= 0)
// return -1;
// if(sig > SIGMAX)
// return -1;
for(i=0;i<sizeof(signal_list)/sizeof(signal_list[0]);i++)
{
if ( signal_list[i].signal == sig )
{
temp = signal_list[i].handler;
break;
}
}
if(temp == SIG_IGN)// || (sig == SIGQUIT && temp == (_p_sig_fn_t)SIG_DFL))
return 0; /* Ignore it */
if(temp == SIG_DFL)
_default_handler(sig); /* this does not return */
else
temp(sig);
return 0;
}
void _default_handler(int sig)
{
_exit(3);
}