b481a2e743
This reverts commit de39d9242a.
Reason for revert: This revert is not needed
Change-Id: I34af8e5d75c724f6c4066fafbfc6bc7d58377601
131 lines
4.9 KiB
C++
131 lines
4.9 KiB
C++
/*
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* Copyright (C) 2017 The Android Open Source Project
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#define _REALLY_INCLUDE_SYS__SYSTEM_PROPERTIES_H_
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#include <sys/_system_properties.h>
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#include <system_properties/prop_area.h>
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#include <system_properties/system_properties.h>
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#include "private/bionic_defs.h"
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static SystemProperties system_properties;
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static_assert(__is_trivially_constructible(SystemProperties),
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"System Properties must be trivially constructable");
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// This is public because it was exposed in the NDK. As of 2017-01, ~60 apps reference this symbol.
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// It is set to nullptr and never modified.
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__BIONIC_WEAK_VARIABLE_FOR_NATIVE_BRIDGE
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prop_area* __system_property_area__ = nullptr;
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__BIONIC_WEAK_FOR_NATIVE_BRIDGE
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int __system_properties_init() {
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return system_properties.Init(PROP_FILENAME) ? 0 : -1;
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}
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__BIONIC_WEAK_FOR_NATIVE_BRIDGE
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int __system_property_set_filename(const char*) {
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return -1;
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}
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__BIONIC_WEAK_FOR_NATIVE_BRIDGE
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int __system_property_area_init() {
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bool fsetxattr_failed = false;
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return system_properties.AreaInit(PROP_FILENAME, &fsetxattr_failed) && !fsetxattr_failed ? 0 : -1;
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}
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__BIONIC_WEAK_FOR_NATIVE_BRIDGE
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uint32_t __system_property_area_serial() {
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return system_properties.AreaSerial();
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}
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__BIONIC_WEAK_FOR_NATIVE_BRIDGE
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const prop_info* __system_property_find(const char* name) {
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return system_properties.Find(name);
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}
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__BIONIC_WEAK_FOR_NATIVE_BRIDGE
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int __system_property_read(const prop_info* pi, char* name, char* value) {
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return system_properties.Read(pi, name, value);
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}
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__BIONIC_WEAK_FOR_NATIVE_BRIDGE
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void __system_property_read_callback(const prop_info* pi,
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void (*callback)(void* cookie, const char* name,
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const char* value, uint32_t serial),
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void* cookie) {
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return system_properties.ReadCallback(pi, callback, cookie);
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}
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__BIONIC_WEAK_FOR_NATIVE_BRIDGE
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int __system_property_get(const char* name, char* value) {
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return system_properties.Get(name, value);
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}
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__BIONIC_WEAK_FOR_NATIVE_BRIDGE
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int __system_property_update(prop_info* pi, const char* value, unsigned int len) {
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return system_properties.Update(pi, value, len);
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}
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__BIONIC_WEAK_FOR_NATIVE_BRIDGE
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int __system_property_add(const char* name, unsigned int namelen, const char* value,
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unsigned int valuelen) {
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return system_properties.Add(name, namelen, value, valuelen);
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}
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__BIONIC_WEAK_FOR_NATIVE_BRIDGE
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uint32_t __system_property_serial(const prop_info* pi) {
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// N.B. a previous version of this function was much heavier-weight
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// and enforced acquire semantics, so give our load here acquire
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// semantics just in case somebody depends on
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// __system_property_serial enforcing memory order, e.g., in case
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// someone spins on the result of this function changing before
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// loading some value.
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return atomic_load_explicit(&pi->serial, memory_order_acquire);
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}
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__BIONIC_WEAK_FOR_NATIVE_BRIDGE
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uint32_t __system_property_wait_any(uint32_t old_serial) {
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return system_properties.WaitAny(old_serial);
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}
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__BIONIC_WEAK_FOR_NATIVE_BRIDGE
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bool __system_property_wait(const prop_info* pi, uint32_t old_serial, uint32_t* new_serial_ptr,
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const timespec* relative_timeout) {
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return system_properties.Wait(pi, old_serial, new_serial_ptr, relative_timeout);
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}
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__BIONIC_WEAK_FOR_NATIVE_BRIDGE
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const prop_info* __system_property_find_nth(unsigned n) {
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return system_properties.FindNth(n);
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}
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__BIONIC_WEAK_FOR_NATIVE_BRIDGE
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int __system_property_foreach(void (*propfn)(const prop_info* pi, void* cookie), void* cookie) {
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return system_properties.Foreach(propfn, cookie);
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}
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