From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Wolfram Joost To: bluez-devel@lists.sourceforge.net Date: Sun, 4 May 2008 22:10:42 +0200 MIME-Version: 1.0 Message-Id: <200805042210.42828@mail.frokaschwei.de> Subject: [Bluez-devel] bluez-utils 3.30, uClibc, hcid, plugin handling Reply-To: BlueZ development List-Id: BlueZ development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Sender: bluez-devel-bounces@lists.sourceforge.net Errors-To: bluez-devel-bounces@lists.sourceforge.net Hello, I had some trouble using hcid from bluez-utils 3.30 on my openwrt-router. Openwrt uses uClibc, not glibc. I discovered the following two problems: 1. In eglib/gmodule.c, function g_module_open, line 29 dlopen is used. The flags for dlopen come from hcid/plugin.c, function plugin_init, line 94. The flag-value is 0. According to the manpage of dlopen (http://www.kernel.org/pub/linux/docs/manpages/man-pages-2.79.tar.bz2), one of RTLD_LAZY or RTLD_NOW has to be set. uClibc checks this and returns an error. 2. hcid needs to be linked with -rdynamic or --export-dynamic. Some functions in the hcid-executable are used by the plugins. Without -rdynamic uClibc doesn't resolve the symbols in the plugins resulting in a NULL pointer dereference and a SIGSEGV. Again, its documented in the man-page of dlopen. Wolfram ------------------------------------------------------------------------- This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone _______________________________________________ Bluez-devel mailing list Bluez-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bluez-devel