95 lines
1.5 KiB
C
95 lines
1.5 KiB
C
/* vi: set sw=4 ts=4: */
|
|
/*
|
|
* Utility routines.
|
|
*
|
|
* Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
|
|
* Copyright (C) 2006 Rob Landley
|
|
* Copyright (C) 2006 Denis Vlasenko
|
|
*
|
|
* Licensed under GPL version 2, see file LICENSE in this tarball for details.
|
|
*/
|
|
|
|
#include "libbb.h"
|
|
|
|
void bb_signals(int sigs, void (*f)(int))
|
|
{
|
|
int sig_no = 0;
|
|
int bit = 1;
|
|
|
|
while (sigs) {
|
|
if (sigs & bit) {
|
|
sigs &= ~bit;
|
|
signal(sig_no, f);
|
|
}
|
|
sig_no++;
|
|
bit <<= 1;
|
|
}
|
|
}
|
|
|
|
void bb_signals_recursive(int sigs, void (*f)(int))
|
|
{
|
|
int sig_no = 0;
|
|
int bit = 1;
|
|
struct sigaction sa;
|
|
|
|
memset(&sa, 0, sizeof(sa));
|
|
sa.sa_handler = f;
|
|
/*sa.sa_flags = 0;*/
|
|
/*sigemptyset(&sa.sa_mask); - hope memset did it*/
|
|
|
|
while (sigs) {
|
|
if (sigs & bit) {
|
|
sigs &= ~bit;
|
|
sigaction(sig_no, &sa, NULL);
|
|
}
|
|
sig_no++;
|
|
bit <<= 1;
|
|
}
|
|
}
|
|
|
|
void sig_block(int sig)
|
|
{
|
|
sigset_t ss;
|
|
sigemptyset(&ss);
|
|
sigaddset(&ss, sig);
|
|
sigprocmask(SIG_BLOCK, &ss, NULL);
|
|
}
|
|
|
|
void sig_unblock(int sig)
|
|
{
|
|
sigset_t ss;
|
|
sigemptyset(&ss);
|
|
sigaddset(&ss, sig);
|
|
sigprocmask(SIG_UNBLOCK, &ss, NULL);
|
|
}
|
|
|
|
#if 0
|
|
void sig_blocknone(void)
|
|
{
|
|
sigset_t ss;
|
|
sigemptyset(&ss);
|
|
sigprocmask(SIG_SETMASK, &ss, NULL);
|
|
}
|
|
#endif
|
|
|
|
void sig_pause(void)
|
|
{
|
|
sigset_t ss;
|
|
sigemptyset(&ss);
|
|
sigsuspend(&ss);
|
|
}
|
|
|
|
/* Assuming the sig is fatal */
|
|
void kill_myself_with_sig(int sig)
|
|
{
|
|
sigset_t set;
|
|
|
|
signal(sig, SIG_DFL);
|
|
|
|
sigemptyset(&set);
|
|
sigaddset(&set, sig);
|
|
sigprocmask(SIG_UNBLOCK, &set, NULL);
|
|
raise(sig);
|
|
_exit(1); /* Should not reach it */
|
|
}
|