123 lines
4.4 KiB
C
123 lines
4.4 KiB
C
/*
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* Copyright (C) 2015-2020 Jolla Ltd.
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* Copyright (C) 2015-2020 Slava Monich <slava.monich@jolla.com>
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*
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* You may use this file under the terms of the BSD license as follows:
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer
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* in the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the names of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <libudev.h>
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#include <stdlib.h>
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#include <dlfcn.h>
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#include "HarbourSystem.h"
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#define LIBUDEV_FUNCTIONS(f) \
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f(struct udev*, udev_unref,\
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(struct udev* udev), \
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(udev)) \
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f(struct udev_monitor*, udev_monitor_new_from_netlink, \
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(struct udev* udev, const char* name), \
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(udev, name)) \
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f(struct udev_device*, udev_monitor_receive_device, \
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(struct udev_monitor* mon), \
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(mon)) \
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f(int, udev_monitor_filter_add_match_subsystem_devtype, \
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(struct udev_monitor* mon, const char* sub, const char* dev), \
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(mon, sub, dev)) \
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f(int, udev_monitor_enable_receiving, \
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(struct udev_monitor* mon), \
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(mon)) \
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f(int, udev_monitor_get_fd, \
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(struct udev_monitor* mon), \
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(mon)) \
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f(struct udev_monitor*, udev_monitor_unref, \
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(struct udev_monitor* mon), \
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(mon)) \
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f(const char*, udev_device_get_devnode, \
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(struct udev_device* dev), \
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(dev)) \
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f(const char*, udev_device_get_devpath, \
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(struct udev_device* dev), \
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(dev)) \
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f(const char*, udev_device_get_subsystem, \
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(struct udev_device* dev), \
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(dev)) \
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f(const char*, udev_device_get_devtype, \
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(struct udev_device* dev), \
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(dev)) \
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f(const char*, udev_device_get_action, \
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(struct udev_device* dev), \
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(dev)) \
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f(struct udev_device*, udev_device_unref, \
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(struct udev_device* dev), \
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(dev))
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#define LIBUDEV_NUM_FUNCTIONS (sizeof(libudev_names)/sizeof(libudev_names[0]))
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#define LIBUDEV_NO_HANDLE ((void*)-1)
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#define LIBUDEV_SO "libudev.so.1"
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static const char* libudev_names[] = {
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"udev_new",
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#define FN_NAME(ret,name,params,args) #name,
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LIBUDEV_FUNCTIONS(FN_NAME)
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};
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static struct {
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void* handle;
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union {
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struct libudev_proc {
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struct udev* (*udev_new)(void);
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#define FN_POINTER(ret,name,params,args) ret (* name) params;
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LIBUDEV_FUNCTIONS(FN_POINTER)
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} udev;
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void* entry[LIBUDEV_NUM_FUNCTIONS];
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} fn;
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} libudev;
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/* udev_new() is the special function where we load the library */
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struct udev*
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udev_new()
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{
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if (!libudev.handle) {
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libudev.handle = HarbourDlopen(LIBUDEV_SO, RTLD_LAZY);
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if (libudev.handle) {
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unsigned int i;
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for (i=0; i<LIBUDEV_NUM_FUNCTIONS; i++) {
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libudev.fn.entry[i] = dlsym(libudev.handle, libudev_names[i]);
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}
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} else {
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libudev.handle = LIBUDEV_NO_HANDLE;
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}
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}
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return libudev.fn.udev.udev_new ? libudev.fn.udev.udev_new() : NULL;
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}
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/* All other wrappers are generated by the preprocessor */
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#define FN_IMPL(ret,name,params,args) ret name params \
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{ return libudev.fn.udev.name ? libudev.fn.udev.name args : 0; }
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LIBUDEV_FUNCTIONS(FN_IMPL)
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