81 lines
1.2 KiB
C
81 lines
1.2 KiB
C
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/* vi: set sw=4 ts=4: */
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/*
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* Utility routines.
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*
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* Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
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* Copyright (C) 2006 Rob Landley
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* Copyright (C) 2006 Denis Vlasenko
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*
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* Licensed under GPL version 2, see file LICENSE in this tarball for details.
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*/
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#include "libbb.h"
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void bb_signals(int sigs, void (*f)(int))
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{
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int sig_no = 0;
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int bit = 1;
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while (sigs) {
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if (sigs & bit) {
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sigs &= ~bit;
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signal(sig_no, f);
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}
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sig_no++;
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bit <<= 1;
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}
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}
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void bb_signals_recursive(int sigs, void (*f)(int))
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{
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int sig_no = 0;
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int bit = 1;
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struct sigaction sa;
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memset(&sa, 0, sizeof(sa));
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sa.sa_handler = f;
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/*sa.sa_flags = 0;*/
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/*sigemptyset(&sa.sa_mask); - hope memset did it*/
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while (sigs) {
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if (sigs & bit) {
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sigs &= ~bit;
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sigaction(sig_no, &sa, NULL);
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}
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sig_no++;
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bit <<= 1;
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}
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}
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void sig_block(int sig)
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{
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sigset_t ss;
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sigemptyset(&ss);
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sigaddset(&ss, sig);
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sigprocmask(SIG_BLOCK, &ss, NULL);
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}
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void sig_unblock(int sig)
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{
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sigset_t ss;
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sigemptyset(&ss);
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sigaddset(&ss, sig);
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sigprocmask(SIG_UNBLOCK, &ss, NULL);
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}
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#if 0
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void sig_blocknone(void)
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{
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sigset_t ss;
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sigemptyset(&ss);
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sigprocmask(SIG_SETMASK, &ss, NULL);
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}
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#endif
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void sig_pause(void)
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{
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sigset_t ss;
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sigemptyset(&ss);
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sigsuspend(&ss);
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}
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