1/*
2 * libjingle
3 * Copyright 2004 Google Inc.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 *
8 *  1. Redistributions of source code must retain the above copyright notice,
9 *     this list of conditions and the following disclaimer.
10 *  2. Redistributions in binary form must reproduce the above copyright notice,
11 *     this list of conditions and the following disclaimer in the documentation
12 *     and/or other materials provided with the distribution.
13 *  3. The name of the author may not be used to endorse or promote products
14 *     derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
19 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28#ifndef TALK_MEDIA_DEVICES_LIBUDEVSYMBOLTABLE_H_
29#define TALK_MEDIA_DEVICES_LIBUDEVSYMBOLTABLE_H_
30
31#include <libudev.h>
32
33#include "webrtc/base/latebindingsymboltable.h"
34
35namespace cricket {
36
37#define LIBUDEV_SYMBOLS_CLASS_NAME LibUDevSymbolTable
38// The libudev symbols we need, as an X-Macro list.
39// This list must contain precisely every libudev function that is used in
40// linuxdevicemanager.cc.
41#define LIBUDEV_SYMBOLS_LIST \
42  X(udev_device_get_devnode) \
43  X(udev_device_get_parent_with_subsystem_devtype) \
44  X(udev_device_get_sysattr_value) \
45  X(udev_device_new_from_syspath) \
46  X(udev_device_unref) \
47  X(udev_enumerate_add_match_subsystem) \
48  X(udev_enumerate_get_list_entry) \
49  X(udev_enumerate_new) \
50  X(udev_enumerate_scan_devices) \
51  X(udev_enumerate_unref) \
52  X(udev_list_entry_get_name) \
53  X(udev_list_entry_get_next) \
54  X(udev_monitor_enable_receiving) \
55  X(udev_monitor_filter_add_match_subsystem_devtype) \
56  X(udev_monitor_get_fd) \
57  X(udev_monitor_new_from_netlink) \
58  X(udev_monitor_receive_device) \
59  X(udev_monitor_unref) \
60  X(udev_new) \
61  X(udev_unref)
62
63#define LATE_BINDING_SYMBOL_TABLE_CLASS_NAME LIBUDEV_SYMBOLS_CLASS_NAME
64#define LATE_BINDING_SYMBOL_TABLE_SYMBOLS_LIST LIBUDEV_SYMBOLS_LIST
65#include "webrtc/base/latebindingsymboltable.h.def"
66#undef LATE_BINDING_SYMBOL_TABLE_CLASS_NAME
67#undef LATE_BINDING_SYMBOL_TABLE_SYMBOLS_LIST
68
69// libudev has changed ABIs to libudev.so.1 in recent distros and lots of users
70// and/or software (including Google Chrome) are symlinking the old to the new.
71// The entire point of ABI versions is that you can't safely do that, and
72// it has caused crashes in the wild. This function checks if the DllHandle that
73// we got back for libudev.so.0 is actually for libudev.so.1. If so, the library
74// cannot safely be used.
75bool IsWrongLibUDevAbiVersion(rtc::DllHandle libudev_0);
76
77}  // namespace cricket
78
79#endif  // TALK_MEDIA_DEVICES_LIBUDEVSYMBOLTABLE_H_
80