15976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org/* 25976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org * libudev - interface to udev device information 35976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org * 45976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org * Copyright (C) 2008-2010 Kay Sievers <kay.sievers@vrfy.org> 55976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org * 65976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org * This library is free software; you can redistribute it and/or 75976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org * modify it under the terms of the GNU Lesser General Public 85976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org * License as published by the Free Software Foundation; either 95976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org * version 2.1 of the License, or (at your option) any later version. 105976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org */ 115976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org 125976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org#ifndef _LIBUDEV_H_ 135976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org#define _LIBUDEV_H_ 145976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org 155976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org#include <stdarg.h> 165976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org#include <sys/types.h> 175976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org#include <sys/stat.h> 185976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org 195976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org#ifdef __cplusplus 205976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgextern "C" { 215976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org#endif 225976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org 235976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org/* 245976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org * udev - library context 255976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org * 265976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org * reads the udev config and system environment 275976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org * allows custom logging 285976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org */ 295976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgstruct udev; 305976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgstruct udev *udev_ref(struct udev *udev); 315976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgvoid udev_unref(struct udev *udev); 325976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgstruct udev *udev_new(void); 335976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgvoid udev_set_log_fn(struct udev *udev, 345976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org void (*log_fn)(struct udev *udev, 355976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org int priority, const char *file, int line, const char *fn, 365976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org const char *format, va_list args)); 375976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgint udev_get_log_priority(struct udev *udev); 385976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgvoid udev_set_log_priority(struct udev *udev, int priority); 395976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgconst char *udev_get_sys_path(struct udev *udev); 405976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgconst char *udev_get_dev_path(struct udev *udev); 415976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgvoid *udev_get_userdata(struct udev *udev); 425976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgvoid udev_set_userdata(struct udev *udev, void *userdata); 435976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org 445976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org/* 455976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org * udev_list 465976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org * 475976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org * access to libudev generated lists 485976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org */ 495976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgstruct udev_list_entry; 505976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgstruct udev_list_entry *udev_list_entry_get_next(struct udev_list_entry *list_entry); 515976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgstruct udev_list_entry *udev_list_entry_get_by_name(struct udev_list_entry *list_entry, const char *name); 525976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgconst char *udev_list_entry_get_name(struct udev_list_entry *list_entry); 535976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgconst char *udev_list_entry_get_value(struct udev_list_entry *list_entry); 545976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org/** 555976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org * udev_list_entry_foreach: 565976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org * @list_entry: entry to store the current position 575976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org * @first_entry: first entry to start with 585976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org * 595976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org * Helper to iterate over all entries of a list. 605976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org */ 615976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org#define udev_list_entry_foreach(list_entry, first_entry) \ 625976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org for (list_entry = first_entry; \ 635976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org list_entry != NULL; \ 645976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org list_entry = udev_list_entry_get_next(list_entry)) 655976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org 665976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org/* 675976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org * udev_device 685976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org * 695976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org * access to sysfs/kernel devices 705976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org */ 715976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgstruct udev_device; 725976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgstruct udev_device *udev_device_ref(struct udev_device *udev_device); 735976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgvoid udev_device_unref(struct udev_device *udev_device); 745976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgstruct udev *udev_device_get_udev(struct udev_device *udev_device); 755976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgstruct udev_device *udev_device_new_from_syspath(struct udev *udev, const char *syspath); 765976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgstruct udev_device *udev_device_new_from_devnum(struct udev *udev, char type, dev_t devnum); 775976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgstruct udev_device *udev_device_new_from_subsystem_sysname(struct udev *udev, const char *subsystem, const char *sysname); 785976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgstruct udev_device *udev_device_new_from_environment(struct udev *udev); 795976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org/* udev_device_get_parent_*() does not take a reference on the returned device, it is automatically unref'd with the parent */ 805976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgstruct udev_device *udev_device_get_parent(struct udev_device *udev_device); 815976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgstruct udev_device *udev_device_get_parent_with_subsystem_devtype(struct udev_device *udev_device, 825976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org const char *subsystem, const char *devtype); 835976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org/* retrieve device properties */ 845976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgconst char *udev_device_get_devpath(struct udev_device *udev_device); 855976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgconst char *udev_device_get_subsystem(struct udev_device *udev_device); 865976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgconst char *udev_device_get_devtype(struct udev_device *udev_device); 875976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgconst char *udev_device_get_syspath(struct udev_device *udev_device); 885976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgconst char *udev_device_get_sysname(struct udev_device *udev_device); 895976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgconst char *udev_device_get_sysnum(struct udev_device *udev_device); 905976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgconst char *udev_device_get_devnode(struct udev_device *udev_device); 915976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgstruct udev_list_entry *udev_device_get_devlinks_list_entry(struct udev_device *udev_device); 925976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgstruct udev_list_entry *udev_device_get_properties_list_entry(struct udev_device *udev_device); 935976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgstruct udev_list_entry *udev_device_get_tags_list_entry(struct udev_device *udev_device); 945976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgconst char *udev_device_get_property_value(struct udev_device *udev_device, const char *key); 955976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgconst char *udev_device_get_driver(struct udev_device *udev_device); 965976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgdev_t udev_device_get_devnum(struct udev_device *udev_device); 975976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgconst char *udev_device_get_action(struct udev_device *udev_device); 985976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgunsigned long long int udev_device_get_seqnum(struct udev_device *udev_device); 995976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgconst char *udev_device_get_sysattr_value(struct udev_device *udev_device, const char *sysattr); 1005976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org 1015976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org/* 1025976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org * udev_monitor 1035976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org * 1045976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org * access to kernel uevents and udev events 1055976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org */ 1065976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgstruct udev_monitor; 1075976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgstruct udev_monitor *udev_monitor_ref(struct udev_monitor *udev_monitor); 1085976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgvoid udev_monitor_unref(struct udev_monitor *udev_monitor); 1095976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgstruct udev *udev_monitor_get_udev(struct udev_monitor *udev_monitor); 1105976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org/* kernel and udev generated events over netlink */ 1115976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgstruct udev_monitor *udev_monitor_new_from_netlink(struct udev *udev, const char *name); 1125976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org/* custom socket (use netlink and filters instead) */ 1135976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgstruct udev_monitor *udev_monitor_new_from_socket(struct udev *udev, const char *socket_path); 1145976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org/* bind socket */ 1155976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgint udev_monitor_enable_receiving(struct udev_monitor *udev_monitor); 1165976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgint udev_monitor_set_receive_buffer_size(struct udev_monitor *udev_monitor, int size); 1175976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgint udev_monitor_get_fd(struct udev_monitor *udev_monitor); 1185976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgstruct udev_device *udev_monitor_receive_device(struct udev_monitor *udev_monitor); 1195976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org/* in-kernel socket filters to select messages that get delivered to a listener */ 1205976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgint udev_monitor_filter_add_match_subsystem_devtype(struct udev_monitor *udev_monitor, 1215976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org const char *subsystem, const char *devtype); 1225976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgint udev_monitor_filter_add_match_tag(struct udev_monitor *udev_monitor, const char *tag); 1235976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgint udev_monitor_filter_update(struct udev_monitor *udev_monitor); 1245976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgint udev_monitor_filter_remove(struct udev_monitor *udev_monitor); 1255976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org 1265976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org/* 1275976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org * udev_enumerate 1285976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org * 1295976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org * search sysfs for specific devices and provide a sorted list 1305976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org */ 1315976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgstruct udev_enumerate; 1325976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgstruct udev_enumerate *udev_enumerate_ref(struct udev_enumerate *udev_enumerate); 1335976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgvoid udev_enumerate_unref(struct udev_enumerate *udev_enumerate); 1345976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgstruct udev *udev_enumerate_get_udev(struct udev_enumerate *udev_enumerate); 1355976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgstruct udev_enumerate *udev_enumerate_new(struct udev *udev); 1365976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org/* device properties filter */ 1375976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgint udev_enumerate_add_match_subsystem(struct udev_enumerate *udev_enumerate, const char *subsystem); 1385976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgint udev_enumerate_add_nomatch_subsystem(struct udev_enumerate *udev_enumerate, const char *subsystem); 1395976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgint udev_enumerate_add_match_sysattr(struct udev_enumerate *udev_enumerate, const char *sysattr, const char *value); 1405976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgint udev_enumerate_add_nomatch_sysattr(struct udev_enumerate *udev_enumerate, const char *sysattr, const char *value); 1415976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgint udev_enumerate_add_match_property(struct udev_enumerate *udev_enumerate, const char *property, const char *value); 1425976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgint udev_enumerate_add_match_sysname(struct udev_enumerate *udev_enumerate, const char *sysname); 1435976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgint udev_enumerate_add_match_tag(struct udev_enumerate *udev_enumerate, const char *tag); 1445976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgint udev_enumerate_add_syspath(struct udev_enumerate *udev_enumerate, const char *syspath); 1455976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org/* run enumeration with active filters */ 1465976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgint udev_enumerate_scan_devices(struct udev_enumerate *udev_enumerate); 1475976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgint udev_enumerate_scan_subsystems(struct udev_enumerate *udev_enumerate); 1485976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org/* return device list */ 1495976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgstruct udev_list_entry *udev_enumerate_get_list_entry(struct udev_enumerate *udev_enumerate); 1505976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org 1515976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org/* 1525976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org * udev_queue 1535976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org * 1545976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org * access to the currently running udev events 1555976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org */ 1565976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgstruct udev_queue; 1575976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgstruct udev_queue *udev_queue_ref(struct udev_queue *udev_queue); 1585976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgvoid udev_queue_unref(struct udev_queue *udev_queue); 1595976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgstruct udev *udev_queue_get_udev(struct udev_queue *udev_queue); 1605976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgstruct udev_queue *udev_queue_new(struct udev *udev); 1615976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgunsigned long long int udev_queue_get_kernel_seqnum(struct udev_queue *udev_queue); 1625976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgunsigned long long int udev_queue_get_udev_seqnum(struct udev_queue *udev_queue); 1635976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgint udev_queue_get_udev_is_active(struct udev_queue *udev_queue); 1645976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgint udev_queue_get_queue_is_empty(struct udev_queue *udev_queue); 1655976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgint udev_queue_get_seqnum_is_finished(struct udev_queue *udev_queue, unsigned long long int seqnum); 1665976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgint udev_queue_get_seqnum_sequence_is_finished(struct udev_queue *udev_queue, 1675976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org unsigned long long int start, unsigned long long int end); 1685976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgstruct udev_list_entry *udev_queue_get_queued_list_entry(struct udev_queue *udev_queue); 1695976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgstruct udev_list_entry *udev_queue_get_failed_list_entry(struct udev_queue *udev_queue); 1705976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org 1715976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org#ifdef __cplusplus 1725976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org} /* extern "C" */ 1735976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org#endif 1745976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org 1755976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org#endif 176