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61 lines
1.4 KiB
C
61 lines
1.4 KiB
C
/*
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* \brief QPA plugin initialization
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* \author Christian Prochaska
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* \date 2020-06-28
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*/
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/*
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* Copyright (C) 2020 Genode Labs GmbH
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*
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* This file is part of the Genode OS framework, which is distributed
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* under the terms of the GNU Affero General Public License version 3.
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*/
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#ifndef _INCLUDE__QPA_INIT_H_
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#define _INCLUDE__QPA_INIT_H_
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/* Genode includes */
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#include <base/env.h>
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/* libc includes */
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#include <dlfcn.h> /* 'dlopen' */
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#include <stdio.h> /* 'fprintf' */
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#include <stdlib.h> /* 'exit' */
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#include <unistd.h> /* 'access' */
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/**
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* Initialize the QPA plugin
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*
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* When Qt loads the plugin again, it will get the same handle.
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*/
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static inline void qpa_init(Genode::Env &env)
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{
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char const *qpa_plugin = "/qt/plugins/platforms/libqgenode.lib.so";
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void *qpa_plugin_handle = nullptr;
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/* check existence with 'access()' first to avoid ld error messages */
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if (access(qpa_plugin, F_OK) == 0)
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qpa_plugin_handle = dlopen(qpa_plugin, RTLD_LAZY);
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if (qpa_plugin_handle) {
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typedef void (*initialize_qpa_plugin_t)(Genode::Env &);
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initialize_qpa_plugin_t initialize_qpa_plugin =
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(initialize_qpa_plugin_t) dlsym(qpa_plugin_handle,
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"initialize_qpa_plugin");
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if (!initialize_qpa_plugin) {
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fprintf(stderr, "Could not find 'initialize_qpa_plugin' \
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function in QPA plugin\n");
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dlclose(qpa_plugin_handle);
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exit(1);
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}
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initialize_qpa_plugin(env);
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}
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}
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#endif /* _INCLUDE__QPA_INIT_H_ */
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