/* * libudev - interface to udev device information * * Copyright (C) 2008 Kay Sievers * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. */ #ifndef _LIBUDEV_H_ #define _LIBUDEV_H_ #include #include #include /* this will stay as long as the DeviceKit integration of udev is work in progress */ #if !defined _LIBUDEV_COMPILATION && !defined LIBUDEV_I_KNOW_THE_API_IS_SUBJECT_TO_CHANGE #error "#define LIBUDEV_I_KNOW_THE_API_IS_SUBJECT_TO_CHANGE is needed to use this experimental library version" #endif /* library context */ struct udev; extern struct udev *udev_new(void); extern struct udev *udev_ref(struct udev *udev); extern void udev_unref(struct udev *udev); extern 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)); extern int udev_get_log_priority(struct udev *udev); extern void udev_set_log_priority(struct udev *udev, int priority); extern const char *udev_get_sys_path(struct udev *udev); extern const char *udev_get_dev_path(struct udev *udev); extern void *udev_get_userdata(struct udev *udev); extern void udev_set_userdata(struct udev *udev, void *userdata); /* list iteration */ struct udev_list_entry; extern struct udev_list_entry *udev_list_entry_get_next(struct udev_list_entry *list_entry); extern struct udev_list_entry *udev_list_entry_get_by_name(struct udev_list_entry *list_entry, const char *name); extern const char *udev_list_entry_get_name(struct udev_list_entry *list_entry); extern const char *udev_list_entry_get_value(struct udev_list_entry *list_entry); #define udev_list_entry_foreach(entry, first) \ for (entry = first; \ entry != NULL; \ entry = udev_list_entry_get_next(entry)) /* sys devices */ struct udev_device; extern struct udev_device *udev_device_new_from_syspath(struct udev *udev, const char *syspath); extern struct udev_device *udev_device_new_from_devnum(struct udev *udev, char type, dev_t devnum); extern struct udev_device *udev_device_new_from_subsystem_sysname(struct udev *udev, const char *subsystem, const char *sysname); extern struct udev_device *udev_device_get_parent(struct udev_device *udev_device); extern struct udev_device *udev_device_get_parent_with_subsystem_devtype(struct udev_device *udev_device, const char *subsystem, const char *devtype); extern struct udev_device *udev_device_ref(struct udev_device *udev_device); extern void udev_device_unref(struct udev_device *udev_device); extern struct udev *udev_device_get_udev(struct udev_device *udev_device); extern const char *udev_device_get_devpath(struct udev_device *udev_device); extern const char *udev_device_get_subsystem(struct udev_device *udev_device); extern const char *udev_device_get_devtype(struct udev_device *udev_device); extern const char *udev_device_get_syspath(struct udev_device *udev_device); extern const char *udev_device_get_sysname(struct udev_device *udev_device); extern const char *udev_device_get_sysnum(struct udev_device *udev_device); extern const char *udev_device_get_devnode(struct udev_device *udev_device); extern struct udev_list_entry *udev_device_get_devlinks_list_entry(struct udev_device *udev_device); extern struct udev_list_entry *udev_device_get_properties_list_entry(struct udev_device *udev_device); extern const char *udev_device_get_property_value(struct udev_device *udev_device, const char *key); extern const char *udev_device_get_driver(struct udev_device *udev_device); extern dev_t udev_device_get_devnum(struct udev_device *udev_device); extern const char *udev_device_get_action(struct udev_device *udev_device); extern unsigned long long int udev_device_get_seqnum(struct udev_device *udev_device); extern const char *udev_device_get_sysattr_value(struct udev_device *udev_device, const char *sysattr); /* udev and kernel device events */ struct udev_monitor; extern struct udev_monitor *udev_monitor_new_from_socket(struct udev *udev, const char *socket_path); extern struct udev_monitor *udev_monitor_new_from_netlink(struct udev *udev, const char *name); extern int udev_monitor_enable_receiving(struct udev_monitor *udev_monitor); extern struct udev_monitor *udev_monitor_ref(struct udev_monitor *udev_monitor); extern void udev_monitor_unref(struct udev_monitor *udev_monitor); extern struct udev *udev_monitor_get_udev(struct udev_monitor *udev_monitor); extern int udev_monitor_get_fd(struct udev_monitor *udev_monitor); extern struct udev_device *udev_monitor_receive_device(struct udev_monitor *udev_monitor); extern int udev_monitor_filter_add_match_subsystem_devtype(struct udev_monitor *udev_monitor, const char *subsystem, const char *devtype); /* sys enumeration */ struct udev_enumerate; extern struct udev_enumerate *udev_enumerate_new(struct udev *udev); extern struct udev_enumerate *udev_enumerate_ref(struct udev_enumerate *udev_enumerate); extern void udev_enumerate_unref(struct udev_enumerate *udev_enumerate); extern struct udev *udev_enumerate_get_udev(struct udev_enumerate *udev_enumerate); extern int udev_enumerate_add_match_subsystem(struct udev_enumerate *udev_enumerate, const char *subsystem); extern int udev_enumerate_add_nomatch_subsystem(struct udev_enumerate *udev_enumerate, const char *subsystem); extern int udev_enumerate_add_match_sysattr(struct udev_enumerate *udev_enumerate, const char *sysattr, const char *value); extern int udev_enumerate_add_nomatch_sysattr(struct udev_enumerate *udev_enumerate, const char *sysattr, const char *value); extern int udev_enumerate_add_match_property(struct udev_enumerate *udev_enumerate, const char *property, const char *value); extern int udev_enumerate_add_syspath(struct udev_enumerate *udev_enumerate, const char *syspath); extern int udev_enumerate_scan_devices(struct udev_enumerate *udev_enumerate); extern int udev_enumerate_scan_subsystems(struct udev_enumerate *udev_enumerate); extern struct udev_list_entry *udev_enumerate_get_list_entry(struct udev_enumerate *udev_enumerate); /* event queue */ struct udev_queue; extern struct udev_queue *udev_queue_new(struct udev *udev); extern struct udev_queue *udev_queue_ref(struct udev_queue *udev_queue); extern void udev_queue_unref(struct udev_queue *udev_queue); extern struct udev *udev_queue_get_udev(struct udev_queue *udev_queue); extern unsigned long long int udev_queue_get_kernel_seqnum(struct udev_queue *udev_queue); extern unsigned long long int udev_queue_get_udev_seqnum(struct udev_queue *udev_queue); extern int udev_queue_get_udev_is_active(struct udev_queue *udev_queue); extern int udev_queue_get_queue_is_empty(struct udev_queue *udev_queue); extern int udev_queue_get_seqnum_is_finished(struct udev_queue *udev_queue, unsigned long long int seqnum); extern struct udev_list_entry *udev_queue_get_queued_list_entry(struct udev_queue *udev_queue); extern struct udev_list_entry *udev_queue_get_failed_list_entry(struct udev_queue *udev_queue); #endif