mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
118 lines
3.4 KiB
C++
118 lines
3.4 KiB
C++
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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/*
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* This file defines a wrapper around libudev so we can avoid
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* linking directly to it and use dlopen instead.
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*/
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#ifndef HAL_LINUX_UDEV_H_
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#define HAL_LINUX_UDEV_H_
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#include <dlfcn.h>
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namespace mozilla {
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struct udev;
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struct udev_device;
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struct udev_enumerate;
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struct udev_list_entry;
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struct udev_monitor;
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class udev_lib {
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public:
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udev_lib() : lib(dlopen("libudev.so.0", RTLD_LAZY | RTLD_GLOBAL)),
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udev(NULL) {
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if (lib && LoadSymbols())
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udev = udev_new();
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}
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~udev_lib() {
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if (udev) {
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udev_unref(udev);
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}
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if (lib) {
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dlclose(lib);
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}
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}
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operator bool() {
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return udev;
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}
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private:
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bool LoadSymbols() {
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#define DLSYM(s) \
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do { \
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s = (typeof(s))dlsym(lib, #s); \
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if (!s) return false; \
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} while (0)
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DLSYM(udev_new);
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DLSYM(udev_unref);
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DLSYM(udev_device_unref);
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DLSYM(udev_device_new_from_syspath);
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DLSYM(udev_device_get_devnode);
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DLSYM(udev_device_get_property_value);
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DLSYM(udev_device_get_action);
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DLSYM(udev_enumerate_new);
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DLSYM(udev_enumerate_unref);
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DLSYM(udev_enumerate_add_match_subsystem);
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DLSYM(udev_enumerate_scan_devices);
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DLSYM(udev_enumerate_get_list_entry);
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DLSYM(udev_list_entry_get_next);
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DLSYM(udev_list_entry_get_name);
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DLSYM(udev_monitor_new_from_netlink);
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DLSYM(udev_monitor_filter_add_match_subsystem_devtype);
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DLSYM(udev_monitor_enable_receiving);
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DLSYM(udev_monitor_get_fd);
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DLSYM(udev_monitor_receive_device);
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DLSYM(udev_monitor_unref);
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#undef DLSYM
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return true;
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}
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void* lib;
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public:
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struct udev* udev;
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// Function pointers returned from dlsym.
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struct udev* (*udev_new)(void);
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void (*udev_unref)(struct udev*);
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void (*udev_device_unref)(struct udev_device*);
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struct udev_device* (*udev_device_new_from_syspath)(struct udev*,
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const char*);
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const char* (*udev_device_get_devnode)(struct udev_device*);
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const char* (*udev_device_get_property_value)(struct udev_device*,
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const char*);
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const char* (*udev_device_get_action)(struct udev_device*);
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struct udev_enumerate* (*udev_enumerate_new)(struct udev*);
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void (*udev_enumerate_unref)(struct udev_enumerate*);
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int (*udev_enumerate_add_match_subsystem)(struct udev_enumerate*,
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const char*);
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int (*udev_enumerate_scan_devices)(struct udev_enumerate*);
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struct udev_list_entry* (*udev_enumerate_get_list_entry)
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(struct udev_enumerate*);
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struct udev_list_entry* (*udev_list_entry_get_next)(struct udev_list_entry *);
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const char* (*udev_list_entry_get_name)(struct udev_list_entry*);
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struct udev_monitor* (*udev_monitor_new_from_netlink)(struct udev*,
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const char*);
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int (*udev_monitor_filter_add_match_subsystem_devtype)
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(struct udev_monitor*, const char*, const char*);
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int (*udev_monitor_enable_receiving)(struct udev_monitor*);
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int (*udev_monitor_get_fd)(struct udev_monitor*);
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struct udev_device* (*udev_monitor_receive_device)(struct udev_monitor*);
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void (*udev_monitor_unref)(struct udev_monitor*);
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};
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} // namespace mozilla
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#endif // HAL_LINUX_UDEV_H_
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