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#include "sig.h"
#include <signal.h>
/**
@file sig.c
@authors djb, jmh
@ref qmail
@brief signal handling functions
*/
void sig_alarmblock()
{
sig_block(SIGALRM);
}
void sig_alarmunblock()
{
sig_unblock(SIGALRM);
}
void sig_alarmcatch(void (*f)(void))
{
sig_catch(SIGALRM, (void (*)(int))f);
}
void sig_alarmdefault()
{
sig_catch(SIGALRM, SIG_DFL);
}
int sig_alarm = SIGALRM;
void sig_block(int sig)
{
sigset_t ss;
sigemptyset(&ss);
sigaddset(&ss, sig);
sigprocmask(SIG_BLOCK, &ss, (sigset_t *)0);
}
void sig_unblock(int sig)
{
sigset_t ss;
sigemptyset(&ss);
sigaddset(&ss, sig);
sigprocmask(SIG_UNBLOCK, &ss, (sigset_t *)0);
}
void sig_blocknone()
{
sigset_t ss;
sigemptyset(&ss);
sigprocmask(SIG_SETMASK, &ss, (sigset_t *)0);
}
void sig_catch(int sig, void (*f)(int))
{
struct sigaction sa;
sa.sa_handler = f;
sa.sa_flags = 0;
sigemptyset(&sa.sa_mask);
sigaction(sig, &sa, (struct sigaction *)0);
}
void sig_pause()
{
sigset_t ss;
sigemptyset(&ss);
sigsuspend(&ss);
}
void sig_pipeignore()
{
sig_catch(SIGPIPE, SIG_IGN);
}
void sig_pipedefault()
{
sig_catch(SIGPIPE, SIG_DFL);
}
int sig_pipe = SIGPIPE;
void sig_childblock()
{
sig_block(SIGCHLD);
}
void sig_childunblock()
{
sig_unblock(SIGCHLD);
}
void sig_childcatch(void (*f)(void))
{
sig_catch(SIGCHLD, (void (*)(int))f);
}
void sig_childdefault()
{
sig_catch(SIGCHLD, SIG_DFL);
}
int sig_child = SIGCHLD;
void sig_hangupblock()
{
sig_block(SIGHUP);
}
void sig_hangupunblock()
{
sig_unblock(SIGHUP);
}
void sig_hangupcatch(void (*f)(void))
{
sig_catch(SIGHUP, (void (*)(int))f);
}
void sig_hangupdefault()
{
sig_catch(SIGHUP, SIG_DFL);
}
int sig_hangup = SIGHUP;
void sig_termblock()
{
sig_block(SIGTERM);
}
void sig_termunblock()
{
sig_unblock(SIGTERM);
}
void sig_termcatch(void (*f)(void))
{
sig_catch(SIGTERM, (void (*)(int))f);
}
void sig_termdefault()
{
sig_catch(SIGTERM, SIG_DFL);
}
int sig_term = SIGTERM;
void sig_bugcatch(void (*f)(int))
{
sig_catch(SIGILL, f);
sig_catch(SIGABRT, f);
sig_catch(SIGFPE, f);
sig_catch(SIGBUS, f);
sig_catch(SIGSEGV, f);
#ifdef SIGSYS
sig_catch(SIGSYS, f);
#endif
#ifdef SIGEMT
sig_catch(SIGEMT, f);
#endif
}
void (*sig_defaulthandler)(int) = SIG_DFL;
void sig_miscignore()
{
sig_catch(SIGVTALRM, SIG_IGN);
sig_catch(SIGPROF, SIG_IGN);
sig_catch(SIGQUIT, SIG_IGN);
sig_catch(SIGINT, SIG_IGN);
sig_catch(SIGHUP, SIG_IGN);
#ifdef SIGXCPU
sig_catch(SIGXCPU, SIG_IGN);
#endif
#ifdef SIGXFSZ
sig_catch(SIGXFSZ, SIG_IGN);
#endif
}
void (*sig_ignorehandler)(int) = SIG_IGN;
int sig_cont = SIGCONT;
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