1dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* 2dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Copyright (C) 2006 The Android Open Source Project 3dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * 4dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Licensed under the Apache License, Version 2.0 (the "License"); 5dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * you may not use this file except in compliance with the License. 6dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * You may obtain a copy of the License at 7dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * 8dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * http://www.apache.org/licenses/LICENSE-2.0 9dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * 10dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Unless required by applicable law or agreed to in writing, software 11dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * distributed under the License is distributed on an "AS IS" BASIS, 12dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * See the License for the specific language governing permissions and 14dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * limitations under the License. 15dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 16dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 17dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#ifndef __CUTILS_PROPERTIES_H 18dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#define __CUTILS_PROPERTIES_H 19dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 200e54ec825e6eae234a486c2049039fb6986a39b8Nick Kralevich#include <sys/cdefs.h> 210e54ec825e6eae234a486c2049039fb6986a39b8Nick Kralevich#include <stddef.h> 2253df3ade9bacce57099bb9eeb2a34bb5945d463eNick Kralevich#include <sys/system_properties.h> 2353df3ade9bacce57099bb9eeb2a34bb5945d463eNick Kralevich 24dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#ifdef __cplusplus 25dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectextern "C" { 26dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#endif 27dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 28dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* System properties are *small* name value pairs managed by the 29dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project** property service. If your data doesn't fit in the provided 30dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project** space it is not appropriate for a system property. 31dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project** 32dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project** WARNING: system/bionic/include/sys/system_properties.h also defines 33dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project** these, but with different names. (TODO: fix that) 34dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project*/ 3553df3ade9bacce57099bb9eeb2a34bb5945d463eNick Kralevich#define PROPERTY_KEY_MAX PROP_NAME_MAX 3653df3ade9bacce57099bb9eeb2a34bb5945d463eNick Kralevich#define PROPERTY_VALUE_MAX PROP_VALUE_MAX 37dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 38dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* property_get: returns the length of the value which will never be 39dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project** greater than PROPERTY_VALUE_MAX - 1 and will always be zero terminated. 40dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project** (the length does not include the terminating zero). 41dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project** 42dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project** If the property read fails or returns an empty value, the default 43dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project** value is used (if nonnull). 44dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project*/ 45dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectint property_get(const char *key, char *value, const char *default_value); 46dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 47dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* property_set: returns 0 on success, < 0 on failure 48dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project*/ 49dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectint property_set(const char *key, const char *value); 50dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 51dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectint property_list(void (*propfn)(const char *key, const char *value, void *cookie), void *cookie); 52dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 530e54ec825e6eae234a486c2049039fb6986a39b8Nick Kralevich#if defined(__BIONIC_FORTIFY) 540e54ec825e6eae234a486c2049039fb6986a39b8Nick Kralevich 550e54ec825e6eae234a486c2049039fb6986a39b8Nick Kralevichextern int __property_get_real(const char *, char *, const char *) 560e54ec825e6eae234a486c2049039fb6986a39b8Nick Kralevich __asm__(__USER_LABEL_PREFIX__ "property_get"); 57bda25e4ed5f2fdd65cf32e7454774f5937c4ede4Nick Kralevich__errordecl(__property_get_too_small_error, "property_get() called with too small of a buffer"); 580e54ec825e6eae234a486c2049039fb6986a39b8Nick Kralevich 590e54ec825e6eae234a486c2049039fb6986a39b8Nick Kralevich__BIONIC_FORTIFY_INLINE 600e54ec825e6eae234a486c2049039fb6986a39b8Nick Kralevichint property_get(const char *key, char *value, const char *default_value) { 610e54ec825e6eae234a486c2049039fb6986a39b8Nick Kralevich size_t bos = __bos(value); 620e54ec825e6eae234a486c2049039fb6986a39b8Nick Kralevich if (bos < PROPERTY_VALUE_MAX) { 630e54ec825e6eae234a486c2049039fb6986a39b8Nick Kralevich __property_get_too_small_error(); 640e54ec825e6eae234a486c2049039fb6986a39b8Nick Kralevich } 650e54ec825e6eae234a486c2049039fb6986a39b8Nick Kralevich return __property_get_real(key, value, default_value); 660e54ec825e6eae234a486c2049039fb6986a39b8Nick Kralevich} 670e54ec825e6eae234a486c2049039fb6986a39b8Nick Kralevich 680e54ec825e6eae234a486c2049039fb6986a39b8Nick Kralevich#endif 69dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 70dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#ifdef HAVE_SYSTEM_PROPERTY_SERVER 71dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* 72dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * We have an external property server instead of built-in libc support. 73dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Used by the simulator. 74dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 75dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#define SYSTEM_PROPERTY_PIPE_NAME "/tmp/android-sysprop" 76dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 77dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectenum { 78dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project kSystemPropertyUnknown = 0, 79dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project kSystemPropertyGet, 80dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project kSystemPropertySet, 81dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project kSystemPropertyList 82dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project}; 83dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#endif /*HAVE_SYSTEM_PROPERTY_SERVER*/ 84dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 85dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 86dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#ifdef __cplusplus 87dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 88dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#endif 89dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 90dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#endif 91