device/udev_linux/udev.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "device/udev_linux/udev.h"
   6
   7 #include "base/strings/string_util.h"
   8 #include "device/udev_linux/udev_loader.h"
   9
  10 namespace device {
  11
  12 namespace {
  13
  14 std::string StringOrEmptyIfNull(const char* value) {
  15   return value ? value : std::string();
  16 }
  17
  18 }  // namespace
  19
  20 const char* udev_device_get_action(udev_device* udev_device) {
  21   return UdevLoader::Get()->udev_device_get_action(udev_device);
  22 }
  23
  24 const char* udev_device_get_devnode(udev_device* udev_device) {
  25   return UdevLoader::Get()->udev_device_get_devnode(udev_device);
  26 }
  27
  28 udev_device* udev_device_get_parent(udev_device* udev_device) {
  29   return UdevLoader::Get()->udev_device_get_parent(udev_device);
  30 }
  31
  32 udev_device* udev_device_get_parent_with_subsystem_devtype(
  33     udev_device* udev_device,
  34     const char* subsystem,
  35     const char* devtype) {
  36   return UdevLoader::Get()->udev_device_get_parent_with_subsystem_devtype(
  37       udev_device, subsystem, devtype);
  38 }
  39
  40 const char* udev_device_get_property_value(udev_device* udev_device,
  41                                            const char* key) {
  42   return UdevLoader::Get()->udev_device_get_property_value(udev_device, key);
  43 }
  44
  45 const char* udev_device_get_subsystem(udev_device* udev_device) {
  46   return UdevLoader::Get()->udev_device_get_subsystem(udev_device);
  47 }
  48
  49 const char* udev_device_get_sysattr_value(udev_device* udev_device,
  50                                           const char* sysattr) {
  51   return UdevLoader::Get()->udev_device_get_sysattr_value(udev_device, sysattr);
  52 }
  53
  54 const char* udev_device_get_sysname(udev_device* udev_device) {
  55   return UdevLoader::Get()->udev_device_get_sysname(udev_device);
  56 }
  57
  58 const char* udev_device_get_syspath(udev_device* udev_device) {
  59   return UdevLoader::Get()->udev_device_get_syspath(udev_device);
  60 }
  61
  62 udev_device* udev_device_new_from_devnum(udev* udev, char type, dev_t devnum) {
  63   return UdevLoader::Get()->udev_device_new_from_devnum(udev, type, devnum);
  64 }
  65
  66 udev_device* udev_device_new_from_subsystem_sysname(
  67     udev* udev,
  68     const char* subsystem,
  69     const char* sysname) {
  70   return UdevLoader::Get()->udev_device_new_from_subsystem_sysname(
  71       udev, subsystem, sysname);
  72 }
  73
  74 udev_device* udev_device_new_from_syspath(udev* udev, const char* syspath) {
  75   return UdevLoader::Get()->udev_device_new_from_syspath(udev, syspath);
  76 }
  77
  78 void udev_device_unref(udev_device* udev_device) {
  79   UdevLoader::Get()->udev_device_unref(udev_device);
  80 }
  81
  82 int udev_enumerate_add_match_subsystem(udev_enumerate* udev_enumerate,
  83                                        const char* subsystem) {
  84   return UdevLoader::Get()->udev_enumerate_add_match_subsystem(udev_enumerate,
  85                                                                subsystem);
  86 }
  87
  88 udev_list_entry* udev_enumerate_get_list_entry(udev_enumerate* udev_enumerate) {
  89   return UdevLoader::Get()->udev_enumerate_get_list_entry(udev_enumerate);
  90 }
  91
  92 udev_enumerate* udev_enumerate_new(udev* udev) {
  93   return UdevLoader::Get()->udev_enumerate_new(udev);
  94 }
  95
  96 int udev_enumerate_scan_devices(udev_enumerate* udev_enumerate) {
  97   return UdevLoader::Get()->udev_enumerate_scan_devices(udev_enumerate);
  98 }
  99
 100 void udev_enumerate_unref(udev_enumerate* udev_enumerate) {
 101   UdevLoader::Get()->udev_enumerate_unref(udev_enumerate);
 102 }
 103
 104 udev_list_entry* udev_list_entry_get_next(udev_list_entry* list_entry) {
 105   return UdevLoader::Get()->udev_list_entry_get_next(list_entry);
 106 }
 107
 108 const char* udev_list_entry_get_name(udev_list_entry* list_entry) {
 109   return UdevLoader::Get()->udev_list_entry_get_name(list_entry);
 110 }
 111
 112 int udev_monitor_enable_receiving(udev_monitor* udev_monitor) {
 113   return UdevLoader::Get()->udev_monitor_enable_receiving(udev_monitor);
 114 }
 115
 116 int udev_monitor_filter_add_match_subsystem_devtype(udev_monitor* udev_monitor,
 117                                                     const char* subsystem,
 118                                                     const char* devtype) {
 119   return UdevLoader::Get()->udev_monitor_filter_add_match_subsystem_devtype(
 120       udev_monitor, subsystem, devtype);
 121 }
 122
 123 int udev_monitor_get_fd(udev_monitor* udev_monitor) {
 124   return UdevLoader::Get()->udev_monitor_get_fd(udev_monitor);
 125 }
 126
 127 udev_monitor* udev_monitor_new_from_netlink(udev* udev, const char* name) {
 128   return UdevLoader::Get()->udev_monitor_new_from_netlink(udev, name);
 129 }
 130
 131 udev_device* udev_monitor_receive_device(udev_monitor* udev_monitor) {
 132   return UdevLoader::Get()->udev_monitor_receive_device(udev_monitor);
 133 }
 134
 135 void udev_monitor_unref(udev_monitor* udev_monitor) {
 136   UdevLoader::Get()->udev_monitor_unref(udev_monitor);
 137 }
 138
 139 udev* udev_new() {
 140   return UdevLoader::Get()->udev_new();
 141 }
 142
 143 void udev_set_log_fn(
 144     struct udev* udev,
 145     void (*log_fn)(struct udev* udev, int priority, const char* file, int line,
 146                    const char* fn, const char* format, va_list args)) {
 147   return UdevLoader::Get()->udev_set_log_fn(udev, log_fn);
 148 }
 149
 150 void udev_set_log_priority(struct udev* udev, int priority) {
 151   return UdevLoader::Get()->udev_set_log_priority(udev, priority);
 152 }
 153
 154 void udev_unref(udev* udev) {
 155   UdevLoader::Get()->udev_unref(udev);
 156 }
 157
 158 std::string UdevDeviceGetPropertyValue(udev_device* udev_device,
 159                                        const char* key) {
 160   return StringOrEmptyIfNull(udev_device_get_property_value(udev_device, key));
 161 }
 162
 163 std::string UdevDeviceGetSysattrValue(udev_device* udev_device,
 164                                       const char* key) {
 165   return StringOrEmptyIfNull(udev_device_get_sysattr_value(udev_device, key));
 166 }
 167
 168 std::string UdevDecodeString(const std::string& encoded) {
 169   std::string decoded;
 170   const size_t size = encoded.size();
 171   for (size_t i = 0; i < size; ++i) {
 172     char c = encoded[i];
 173     if ((i + 3 < size) && c == '\\' && encoded[i + 1] == 'x') {
 174       c = (HexDigitToInt(encoded[i + 2]) << 4) +
 175           HexDigitToInt(encoded[i + 3]);
 176       i += 3;
 177     }
 178     decoded.push_back(c);
 179   }
 180   return decoded;
 181 }
 182
 183 }  // namespace device