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 #ifndef DEVICE_UDEV_LINUX_UDEV_H_ 6 #define DEVICE_UDEV_LINUX_UDEV_H_ 7 8 #include <stdarg.h> 9 #include <sys/types.h> 10 #include <sys/stat.h> 11 12 #include <string> 13 14 #if !defined(USE_UDEV) 15 #error "USE_UDEV not defined" 16 #endif 17 18 // Adapted from libudev.h. 19 #define udev_list_entry_foreach(list_entry, first_entry) \ 20 for (list_entry = first_entry; list_entry != NULL; \ 21 list_entry = ::device::udev_list_entry_get_next(list_entry)) 22 23 // Forward declarations of opaque structs. 24 struct udev; 25 struct udev_device; 26 struct udev_enumerate; 27 struct udev_list_entry; 28 struct udev_monitor; 29 30 namespace device { 31 32 const char* udev_device_get_action(udev_device* udev_device); 33 const char* udev_device_get_devnode(udev_device* udev_device); 34 udev_device* udev_device_get_parent(udev_device* udev_device); 35 udev_device* udev_device_get_parent_with_subsystem_devtype( 36 udev_device* udev_device, 37 const char* subsystem, 38 const char* devtype); 39 const char* udev_device_get_property_value(udev_device* udev_device, 40 const char* key); 41 const char* udev_device_get_subsystem(udev_device* udev_device); 42 const char* udev_device_get_sysattr_value(udev_device* udev_device, 43 const char* sysattr); 44 const char* udev_device_get_sysname(udev_device* udev_device); 45 const char* udev_device_get_syspath(udev_device* udev_device); 46 udev_device* udev_device_new_from_devnum(udev* udev, char type, dev_t devnum); 47 udev_device* udev_device_new_from_subsystem_sysname( 48 udev* udev, 49 const char* subsystem, 50 const char* sysname); 51 udev_device* udev_device_new_from_syspath(udev* udev, const char* syspath); 52 void udev_device_unref(udev_device* udev_device); 53 int udev_enumerate_add_match_subsystem(udev_enumerate* udev_enumerate, 54 const char* subsystem); 55 udev_list_entry* udev_enumerate_get_list_entry(udev_enumerate* udev_enumerate); 56 udev_enumerate* udev_enumerate_new(udev* udev); 57 int udev_enumerate_scan_devices(udev_enumerate* udev_enumerate); 58 void udev_enumerate_unref(udev_enumerate* udev_enumerate); 59 udev_list_entry* udev_list_entry_get_next(udev_list_entry* list_entry); 60 const char* udev_list_entry_get_name(udev_list_entry* list_entry); 61 int udev_monitor_enable_receiving(udev_monitor* udev_monitor); 62 int udev_monitor_filter_add_match_subsystem_devtype(udev_monitor* udev_monitor, 63 const char* subsystem, 64 const char* devtype); 65 int udev_monitor_get_fd(udev_monitor* udev_monitor); 66 udev_monitor* udev_monitor_new_from_netlink(udev* udev, const char* name); 67 udev_device* udev_monitor_receive_device(udev_monitor* udev_monitor); 68 void udev_monitor_unref(udev_monitor* udev_monitor); 69 udev* udev_new(); 70 void udev_set_log_fn( 71 struct udev* udev, 72 void (*log_fn)(struct udev* udev, int priority, const char* file, int line, 73 const char* fn, const char* format, va_list args)); 74 void udev_set_log_priority(struct udev* udev, int priority); 75 void udev_unref(udev* udev); 76 77 // Calls udev_device_get_property_value() and replaces missing values with 78 // the empty string. 79 std::string UdevDeviceGetPropertyValue(udev_device* udev_device, 80 const char* key); 81 82 // Calls udev_device_get_sysattr_value() and replaces missing values with 83 // the empty string. 84 std::string UdevDeviceGetSysattrValue(udev_device* udev_device, 85 const char* key); 86 87 // Decodes udev-encoded string. Useful for decoding "*_ENC" udev properties. 88 std::string UdevDecodeString(const std::string& encoded); 89 90 } // namespace device 91 92 #endif // DEVICE_UDEV_LINUX_UDEV_H_ 93