[T106][ZXW-22]7520V3SCV2.01.01.02P42U09_VEC_V0.8_AP_VEC origin source commit
Change-Id: Ic6e05d89ecd62fc34f82b23dcf306c93764aec4b
diff --git a/ap/app/busybox/src/libbb/signals.c b/ap/app/busybox/src/libbb/signals.c
new file mode 100644
index 0000000..5651247
--- /dev/null
+++ b/ap/app/busybox/src/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 GPLv2, see file LICENSE in this source tree.
+ */
+
+#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(sig | 128); /* 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);
+}