| // Copyright 2014 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef DEVICE_UDEV_LINUX_UDEV_LOADER_H_ |
| #define DEVICE_UDEV_LINUX_UDEV_LOADER_H_ |
| |
| #include <stdarg.h> |
| #include <sys/types.h> |
| #include <sys/stat.h> |
| |
| #if !defined(USE_UDEV) |
| #error "USE_UDEV not defined" |
| #endif |
| |
| struct udev; |
| struct udev_device; |
| struct udev_enumerate; |
| struct udev_list_entry; |
| struct udev_monitor; |
| |
| namespace device { |
| |
| // Interface to libudev. Accessed through the static Get() function, which |
| // will try to load libudev1 first and then libudev0 on first use. If neither |
| // libraries load successfully, the program will fail with a crash. |
| // |
| // All the methods have the same signatures as libudev's functions. e.g. |
| // udev_monitor_get_fd(mon) simply becomes device::udev_monitor_get_fd(mon). |
| class UdevLoader { |
| public: |
| static UdevLoader* Get(); |
| |
| // Allows to set a particular implementation of the loader. |
| // Given the shape of the existing API bad things will happen if one gets |
| // a udev_device instance, switches to a new loader, and tries to use that |
| // udev_instance again. The expectation is that when running unit tests, |
| // before we switch to fake udev, all attempts to interact with real udev |
| // will fail. |
| static void SetForTesting(UdevLoader* loader, bool delete_previous = true); |
| |
| virtual ~UdevLoader(); |
| |
| virtual bool Init() = 0; |
| |
| virtual const char* udev_device_get_action(udev_device* udev_device) = 0; |
| virtual const char* udev_device_get_devnode(udev_device* udev_device) = 0; |
| virtual udev_device* udev_device_get_parent(udev_device* udev_device) = 0; |
| virtual udev_device* udev_device_get_parent_with_subsystem_devtype( |
| udev_device* udev_device, |
| const char* subsystem, |
| const char* devtype) = 0; |
| virtual const char* udev_device_get_property_value(udev_device* udev_device, |
| const char* key) = 0; |
| virtual const char* udev_device_get_subsystem(udev_device* udev_device) = 0; |
| virtual const char* udev_device_get_sysattr_value(udev_device* udev_device, |
| const char* sysattr) = 0; |
| virtual const char* udev_device_get_sysname(udev_device* udev_device) = 0; |
| virtual const char* udev_device_get_syspath(udev_device* udev_device) = 0; |
| virtual udev_device* udev_device_new_from_devnum(udev* udev, |
| char type, |
| dev_t devnum) = 0; |
| virtual udev_device* udev_device_new_from_subsystem_sysname( |
| udev* udev, |
| const char* subsystem, |
| const char* sysname) = 0; |
| virtual udev_device* udev_device_new_from_syspath(udev* udev, |
| const char* syspath) = 0; |
| virtual void udev_device_unref(udev_device* udev_device) = 0; |
| virtual int udev_enumerate_add_match_subsystem(udev_enumerate* udev_enumerate, |
| const char* subsystem) = 0; |
| virtual udev_list_entry* udev_enumerate_get_list_entry( |
| udev_enumerate* udev_enumerate) = 0; |
| virtual udev_enumerate* udev_enumerate_new(udev* udev) = 0; |
| virtual int udev_enumerate_scan_devices(udev_enumerate* udev_enumerate) = 0; |
| virtual void udev_enumerate_unref(udev_enumerate* udev_enumerate) = 0; |
| virtual udev_list_entry* udev_list_entry_get_next( |
| udev_list_entry* list_entry) = 0; |
| virtual const char* udev_list_entry_get_name(udev_list_entry* list_entry) = 0; |
| virtual int udev_monitor_enable_receiving(udev_monitor* udev_monitor) = 0; |
| virtual int udev_monitor_filter_add_match_subsystem_devtype( |
| udev_monitor* udev_monitor, |
| const char* subsystem, |
| const char* devtype) = 0; |
| virtual int udev_monitor_get_fd(udev_monitor* udev_monitor) = 0; |
| virtual udev_monitor* udev_monitor_new_from_netlink(udev* udev, |
| const char* name) = 0; |
| virtual udev_device* udev_monitor_receive_device( |
| udev_monitor* udev_monitor) = 0; |
| virtual void udev_monitor_unref(udev_monitor* udev_monitor) = 0; |
| virtual udev* udev_new() = 0; |
| virtual void udev_set_log_fn( |
| struct udev* udev, |
| void (*log_fn)(struct udev* udev, int priority, |
| const char* file, int line, |
| const char* fn, const char* format, va_list args)) = 0; |
| virtual void udev_set_log_priority(struct udev* udev, int priority) = 0; |
| virtual void udev_unref(udev* udev) = 0; |
| }; |
| |
| } // namespace device |
| |
| #endif // DEVICE_UDEV_LINUX_UDEV_LOADER_H_ |