1 /* 2 * Copyright (C) 2008 The Android Open Source Project 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in 12 * the documentation and/or other materials provided with the 13 * distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 16 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 17 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 18 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 19 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 22 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 25 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #include "system_properties/prop_info.h" 30 31 #include <string.h> 32 33 constexpr static const char kLongLegacyError[] = 34 "Must use __system_property_read_callback() to read"; 35 static_assert(sizeof(kLongLegacyError) < prop_info::kLongLegacyErrorBufferSize, 36 "Error message for long properties read by legacy libc must fit within 56 chars"); 37 38 prop_info::prop_info(const char* name, uint32_t namelen, const char* value, uint32_t valuelen) { 39 memcpy(this->name, name, namelen); 40 this->name[namelen] = '\0'; 41 atomic_init(&this->serial, valuelen << 24); 42 memcpy(this->value, value, valuelen); 43 this->value[valuelen] = '\0'; 44 } 45 46 prop_info::prop_info(const char* name, uint32_t namelen, uint32_t long_offset) { 47 memcpy(this->name, name, namelen); 48 this->name[namelen] = '\0'; 49 50 auto error_value_len = sizeof(kLongLegacyError) - 1; 51 atomic_init(&this->serial, error_value_len << 24 | kLongFlag); 52 memcpy(this->long_property.error_message, kLongLegacyError, sizeof(kLongLegacyError)); 53 54 this->long_property.offset = long_offset; 55 } 56
