58 lines
1.3 KiB
C
58 lines
1.3 KiB
C
/*
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* File : dlopen.c
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* This file is part of RT-Thread RTOS
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* COPYRIGHT (C) 2006 - 2010, RT-Thread Development Team
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://www.rt-thread.org/license/LICENSE
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*
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* Change Logs:
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* Date Author Notes
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* 2010-11-17 yi.qiu first version
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*/
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#include <rtthread.h>
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#include <rtm.h>
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#include <string.h>
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#define MODULE_ROOT_DIR "/modules"
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void* dlopen(const char *filename, int flags)
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{
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rt_module_t module;
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char *fullpath;
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const char*def_path = MODULE_ROOT_DIR;
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/* check parameters */
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RT_ASSERT(filename != RT_NULL);
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if (filename[0] != '/') /* it's a relative path, prefix with MODULE_ROOT_DIR */
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{
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fullpath = rt_malloc(strlen(def_path) + strlen(filename) + 2);
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/* join path and file name */
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rt_snprintf(fullpath, strlen(def_path) + strlen(filename) + 2,
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"%s/%s", def_path, filename);
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}
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else
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{
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fullpath = (char*)filename; /* absolute path, use it directly */
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}
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/* find in module list */
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module = rt_module_find(fullpath);
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if(module != RT_NULL) module->nref++;
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else module = rt_module_open(fullpath);
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if(fullpath != filename)
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{
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rt_free(fullpath);
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}
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return (void*)module;
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}
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RTM_EXPORT(dlopen);
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