workaround asterisk daemon issue #4071 caused by uclibc 0.29 (thanks to charles.kirsch)

git-svn-id: svn://svn.openwrt.org/openwrt/packages@13712 3c298f89-4303-0410-b956-a3cf2f4a3e73

net/asterisk-1.4.x/Makefile

@@ -10,7 +10,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=asterisk
 PKG_VERSION:=1.4.22
-PKG_RELEASE:=1
+PKG_RELEASE:=2
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=http://downloads.digium.com/pub/asterisk/releases/

net/asterisk-1.4.x/patches/035-main-asterisk-uclibc-daemon.patch

@@ -0,0 +1,42 @@
+diff -Nru asterisk-1.4.22.org/main/asterisk.c asterisk-1.4.22/main/asterisk.c
+--- asterisk-1.4.22.org/main/asterisk.c	2008-07-26 17:31:21.000000000 +0200
++++ asterisk-1.4.22/main/asterisk.c	2008-12-20 22:49:58.000000000 +0100
+@@ -2935,7 +2935,38 @@
+ #if HAVE_WORKING_FORK
+ 	if (ast_opt_always_fork || !ast_opt_no_fork) {
+ #ifndef HAVE_SBIN_LAUNCHD
++#ifndef __UCLIBC__
+ 		daemon(1, 0);
++#else
++/*
++   workaround for uClibc-0.9.29 mipsel bug:
++   recursive mutexes do not work if uClibc daemon() function has been called,
++     if parent thread locks a mutex
++     the child thread cannot acquire a lock with the same name
++     (same code works if daemon() is not called)
++   but duplication of uClibc daemon.c code in here does work.
++*/
++	int fd;
++	switch (fork()) {
++		case -1:
++			exit(1);
++		case 0:
++			break;
++		default:
++			_exit(0);
++	}
++	if (setsid() == -1)
++		exit(1);
++	if (fork())
++		_exit(0);
++	if ((fd = open("/dev/null", O_RDWR, 0)) != -1) {
++		dup2(fd, STDIN_FILENO);
++		dup2(fd, STDOUT_FILENO);
++		dup2(fd, STDERR_FILENO);
++		if (fd > 2)
++			close(fd);
++	}
++#endif
+ 		ast_mainpid = getpid();
+ 		/* Blindly re-write pid file since we are forking */
+ 		unlink(ast_config_AST_PID);