1e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry/* 2e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry * Copyright (C) 2017 The Android Open Source Project 3e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry * All rights reserved. 4e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry * 5e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry * Redistribution and use in source and binary forms, with or without 6e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry * modification, are permitted provided that the following conditions 7e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry * are met: 8e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry * * Redistributions of source code must retain the above copyright 9e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry * notice, this list of conditions and the following disclaimer. 10e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry * * Redistributions in binary form must reproduce the above copyright 11e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry * notice, this list of conditions and the following disclaimer in 12e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry * the documentation and/or other materials provided with the 13e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry * distribution. 14e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry * 15e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 16e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 17e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 18e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 19e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 20e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 22e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 25e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry * SUCH DAMAGE. 27e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry */ 28e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry 29e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry#define _REALLY_INCLUDE_SYS__SYSTEM_PROPERTIES_H_ 30e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry#include <sys/_system_properties.h> 31e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry 32e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry#include <system_properties/prop_area.h> 33e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry#include <system_properties/system_properties.h> 34e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry 35e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry#include "private/bionic_defs.h" 36e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry 37e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherrystatic SystemProperties system_properties; 38ee8e3dd67c910907115c7cef87be3d898d71a05dTom Cherrystatic_assert(__is_trivially_constructible(SystemProperties), 39ee8e3dd67c910907115c7cef87be3d898d71a05dTom Cherry "System Properties must be trivially constructable"); 40e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry 41e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry// This is public because it was exposed in the NDK. As of 2017-01, ~60 apps reference this symbol. 42e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry// It is set to nullptr and never modified. 43e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry__BIONIC_WEAK_VARIABLE_FOR_NATIVE_BRIDGE 44e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherryprop_area* __system_property_area__ = nullptr; 45e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry 46e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry__BIONIC_WEAK_FOR_NATIVE_BRIDGE 47e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherryint __system_properties_init() { 48e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry return system_properties.Init(PROP_FILENAME) ? 0 : -1; 49e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry} 50e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry 51e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry// This was previously for testing, but now that SystemProperties is its own testable class, 52e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry// there is never a reason to call this function. 53e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry__BIONIC_WEAK_FOR_NATIVE_BRIDGE 54e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherryint __system_property_set_filename(const char*) { 55e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry return -1; 56e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry} 57e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry 58e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry__BIONIC_WEAK_FOR_NATIVE_BRIDGE 59e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherryint __system_property_area_init() { 60e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry bool fsetxattr_failed = false; 61e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry return system_properties.AreaInit(PROP_FILENAME, &fsetxattr_failed) && !fsetxattr_failed ? 0 : -1; 62e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry} 63e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry 64e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry__BIONIC_WEAK_FOR_NATIVE_BRIDGE 65e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherryuint32_t __system_property_area_serial() { 66e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry return system_properties.AreaSerial(); 67e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry} 68e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry 69e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry__BIONIC_WEAK_FOR_NATIVE_BRIDGE 70e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherryconst prop_info* __system_property_find(const char* name) { 71e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry return system_properties.Find(name); 72e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry} 73e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry 74e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry__BIONIC_WEAK_FOR_NATIVE_BRIDGE 75e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherryint __system_property_read(const prop_info* pi, char* name, char* value) { 76e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry return system_properties.Read(pi, name, value); 77e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry} 78e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry 79e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry__BIONIC_WEAK_FOR_NATIVE_BRIDGE 80e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherryvoid __system_property_read_callback(const prop_info* pi, 81e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry void (*callback)(void* cookie, const char* name, 82e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry const char* value, uint32_t serial), 83e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry void* cookie) { 84e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry return system_properties.ReadCallback(pi, callback, cookie); 85e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry} 86e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry 87e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry__BIONIC_WEAK_FOR_NATIVE_BRIDGE 88e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherryint __system_property_get(const char* name, char* value) { 89e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry return system_properties.Get(name, value); 90e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry} 91e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry 92e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry__BIONIC_WEAK_FOR_NATIVE_BRIDGE 93e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherryint __system_property_update(prop_info* pi, const char* value, unsigned int len) { 94e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry return system_properties.Update(pi, value, len); 95e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry} 96e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry 97e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry__BIONIC_WEAK_FOR_NATIVE_BRIDGE 98e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherryint __system_property_add(const char* name, unsigned int namelen, const char* value, 99e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry unsigned int valuelen) { 100e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry return system_properties.Add(name, namelen, value, valuelen); 101e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry} 102e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry 103e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry__BIONIC_WEAK_FOR_NATIVE_BRIDGE 104e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherryuint32_t __system_property_serial(const prop_info* pi) { 105e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry return system_properties.Serial(pi); 106e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry} 107e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry 108e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry__BIONIC_WEAK_FOR_NATIVE_BRIDGE 109e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherryuint32_t __system_property_wait_any(uint32_t old_serial) { 110e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry return system_properties.WaitAny(old_serial); 111e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry} 112e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry 113e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry__BIONIC_WEAK_FOR_NATIVE_BRIDGE 114e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherrybool __system_property_wait(const prop_info* pi, uint32_t old_serial, uint32_t* new_serial_ptr, 115e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry const timespec* relative_timeout) { 116e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry return system_properties.Wait(pi, old_serial, new_serial_ptr, relative_timeout); 117e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry} 118e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry 119e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry__BIONIC_WEAK_FOR_NATIVE_BRIDGE 120e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherryconst prop_info* __system_property_find_nth(unsigned n) { 121e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry return system_properties.FindNth(n); 122e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry} 123e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry 124e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry__BIONIC_WEAK_FOR_NATIVE_BRIDGE 125e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherryint __system_property_foreach(void (*propfn)(const prop_info* pi, void* cookie), void* cookie) { 126e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry return system_properties.Foreach(propfn, cookie); 127e275d6d72db1868056a204e8483a7346a28cb8d6Tom Cherry} 128