Magisk/native/jni/resetprop/system_property_api.cpp

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