From f5cb619eb24ba3501a1b1a1c3edd93689714b1f6 Mon Sep 17 00:00:00 2001
From: Robert Spalek <robert@ucw.cz>
Date: Thu, 24 Jun 2004 11:52:21 +0000
Subject: [PATCH] added a wrapper for signal handlers in sighandler.c

---
 lib/Makefile     |  2 +-
 lib/lib.h        |  6 ++++++
 lib/sighandler.c | 27 +++++++++++++++++++++++++++
 3 files changed, 34 insertions(+), 1 deletion(-)
 create mode 100644 lib/sighandler.c

diff --git a/lib/Makefile b/lib/Makefile
index cd51bb8b..06e11a90 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -11,7 +11,7 @@ LIBSH_MODS=alloc alloc_str ctmatch db fastbuf fb-file fb-mem lists \
 	finger proctitle ipaccess profile bitsig randomkey \
 	hashfunc base64 base224 fb-temp fb-mmap fb-printf urlkey \
 	partmap fb-limfd fb-buffer mainloop exitstatus runcmd carefulio \
-	lizard lizard-safe
+	lizard lizard-safe sighandler
 
 ifdef CONFIG_OWN_REGEX
 include lib/regex/Makefile
diff --git a/lib/lib.h b/lib/lib.h
index 2186b5d4..39ee0de6 100644
--- a/lib/lib.h
+++ b/lib/lib.h
@@ -207,4 +207,10 @@ void echo_command_v(byte *buf, int size, byte *cmd, va_list args);
 int careful_read(int fd, void *buf, int len);
 int careful_write(int fd, void *buf, int len);
 
+/* sighandler.c */
+typedef void (*my_sighandler_t)(void);
+extern my_sighandler_t signal_handler[];
+
+void *handle_signal(int signum);
+
 #endif
diff --git a/lib/sighandler.c b/lib/sighandler.c
new file mode 100644
index 00000000..00bd81ff
--- /dev/null
+++ b/lib/sighandler.c
@@ -0,0 +1,27 @@
+/*
+ *	Catching of signals and calling callback functions
+ *
+ *	(c) 2004, Robert Spalek <robert@ucw.cz>
+ */
+
+#include "lib/lib.h"
+
+#include <stdlib.h>
+#include <signal.h>
+
+my_sighandler_t signal_handler[_NSIG];
+
+static void
+signal_handler_internal(int sig)
+{
+  signal(sig, signal_handler_internal);
+  if (signal_handler[sig])
+    signal_handler[sig]();
+  abort();
+}
+
+void *
+handle_signal(int signum)
+{
+  return signal(signum, signal_handler_internal);
+}
-- 
2.39.2