From cdf537c71c29c05fd3d77637a3731de80019d2be Mon Sep 17 00:00:00 2001 From: Matthias Schiffer Date: Mon, 18 Mar 2013 03:06:20 +0100 Subject: Implement protocol module loading --- mmss/CMakeLists.txt | 3 ++- mmss/mmss.h | 21 ++++++++++++--------- mmss/protocol.c | 49 +++++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 63 insertions(+), 10 deletions(-) create mode 100644 mmss/protocol.c (limited to 'mmss') diff --git a/mmss/CMakeLists.txt b/mmss/CMakeLists.txt index b4b5829..7fcc4cb 100644 --- a/mmss/CMakeLists.txt +++ b/mmss/CMakeLists.txt @@ -3,6 +3,7 @@ include_directories(${GMRF_SOURCE_DIR}/include) add_executable(mmss iface.c mmss.c + protocol.c queue.c ) -target_link_libraries(mmss rt) +target_link_libraries(mmss dl) diff --git a/mmss/mmss.h b/mmss/mmss.h index cabd7cd..e7f773e 100644 --- a/mmss/mmss.h +++ b/mmss/mmss.h @@ -28,6 +28,7 @@ #define _GMRF_MMSS_MMSS_H_ #include +#include #include "queue.h" @@ -37,15 +38,6 @@ struct mmss_context { mmss_queue_t packet_queue; }; -struct gmrf_context { - gmrf_context_t *next; - - mmss_context_t *mmss; - gmrf_iface_t *interfaces; - - gmrf_handle_packet_func handle_packet; -}; - struct mmss_network { mmss_network_t *next; @@ -65,6 +57,15 @@ struct mmss_packet { }; +struct gmrf_context { + gmrf_context_t *next; + + mmss_context_t *mmss; + gmrf_iface_t *interfaces; + + gmrf_handle_packet_func handle_packet; +}; + struct gmrf_iface { gmrf_iface_t *node_next; gmrf_iface_t *network_next; @@ -76,4 +77,6 @@ struct gmrf_iface { }; +const mmss_protocol_t* mmss_load_protocol(const char *module); + #endif /* _GMRF_MMSS_MMSS_H_ */ diff --git a/mmss/protocol.c b/mmss/protocol.c new file mode 100644 index 0000000..2df9809 --- /dev/null +++ b/mmss/protocol.c @@ -0,0 +1,49 @@ +/* + Copyright (c) 2013, Matthias Schiffer + All rights reserved. + + Redistribution and use in source and binary forms, with or without + modification, are permitted provided that the following conditions are met: + + 1. Redistributions of source code must retain the above copyright notice, + this list of conditions and the following disclaimer. + 2. Redistributions in binary form must reproduce the above copyright notice, + this list of conditions and the following disclaimer in the documentation + and/or other materials provided with the distribution. + + THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE + FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER + CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, + OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +*/ + + +#include "mmss.h" + +#include +#include + + +const mmss_protocol_t* mmss_load_protocol(const char *module) { + void *handle = dlopen(module, RTLD_NOW); + if (!handle) { + fprintf(stderr, "unable to load protocol from `%s': %s\n", module, dlerror()); + return NULL; + } + + dlerror(); + const mmss_protocol_t *proto = dlsym(handle, "mmss_protocol_info"); + if (!proto) { + fprintf(stderr, "unable to load protocol from `%s': %s\n", module, dlerror()); + dlclose(handle); + return NULL; + } + + return proto; +} -- cgit v1.2.3