1 files changed, 121 insertions, 0 deletions
diff --git a/release/src/router/busybox/libbb/signals.c b/release/src/router/busybox/libbb/signals.c
new file mode 100644
index 00000000..a528756f
--- /dev/null
+++ b/release/src/router/busybox/libbb/signals.c
@@ -0,0 +1,121 @@
+/* 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 Denys Vlasenko
+ *
+ * Licensed under GPL version 2, see file LICENSE in this tarball for details.
+ */
+
+#include "libbb.h"
+
+/* All known arches use small ints for signals */
+smallint bb_got_signal;
+
+void record_signo(int signo)
+{
+	bb_got_signal = signo;
+}
+
+/* Saves 2 bytes on x86! Oh my... */
+int FAST_FUNC sigaction_set(int signum, const struct sigaction *act)
+{
+	return sigaction(signum, act, NULL);
+}
+
+int FAST_FUNC sigprocmask_allsigs(int how)
+{
+	sigset_t set;
+	sigfillset(&set);
+	return sigprocmask(how, &set, NULL);
+}
+
+void FAST_FUNC 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 FAST_FUNC bb_signals_recursive_norestart(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_set(sig_no, &sa);
+		}
+		sig_no++;
+		bit <<= 1;
+	}
+}
+
+void FAST_FUNC sig_block(int sig)
+{
+	sigset_t ss;
+	sigemptyset(&ss);
+	sigaddset(&ss, sig);
+	sigprocmask(SIG_BLOCK, &ss, NULL);
+}
+
+void FAST_FUNC sig_unblock(int sig)
+{
+	sigset_t ss;
+	sigemptyset(&ss);
+	sigaddset(&ss, sig);
+	sigprocmask(SIG_UNBLOCK, &ss, NULL);
+}
+
+void FAST_FUNC wait_for_any_sig(void)
+{
+	sigset_t ss;
+	sigemptyset(&ss);
+	sigsuspend(&ss);
+}
+
+/* Assuming the sig is fatal */
+void FAST_FUNC kill_myself_with_sig(int sig)
+{
+	signal(sig, SIG_DFL);
+	sig_unblock(sig);
+	raise(sig);
+	_exit(EXIT_FAILURE); /* Should not reach it */
+}
+
+void FAST_FUNC signal_SA_RESTART_empty_mask(int sig, void (*handler)(int))
+{
+	struct sigaction sa;
+	memset(&sa, 0, sizeof(sa));
+	/*sigemptyset(&sa.sa_mask);*/
+	sa.sa_flags = SA_RESTART;
+	sa.sa_handler = handler;
+	sigaction_set(sig, &sa);
+}
+
+void FAST_FUNC signal_no_SA_RESTART_empty_mask(int sig, void (*handler)(int))
+{
+	struct sigaction sa;
+	memset(&sa, 0, sizeof(sa));
+	/*sigemptyset(&sa.sa_mask);*/
+	/*sa.sa_flags = 0;*/
+	sa.sa_handler = handler;
+	sigaction_set(sig, &sa);
+}