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/*
* Copyright (C) 2006 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef __CUTILS_PROPERTIES_H
#define __CUTILS_PROPERTIES_H
#include <sys/cdefs.h>
#include <stddef.h>
#include <sys/system_properties.h>
#ifdef __cplusplus
extern "C" {
#endif
/* System properties are *small* name value pairs managed by the
** property service. If your data doesn't fit in the provided
** space it is not appropriate for a system property.
**
** WARNING: system/bionic/include/sys/system_properties.h also defines
** these, but with different names. (TODO: fix that)
*/
#define PROPERTY_KEY_MAX PROP_NAME_MAX
#define PROPERTY_VALUE_MAX PROP_VALUE_MAX
/* property_get: returns the length of the value which will never be
** greater than PROPERTY_VALUE_MAX - 1 and will always be zero terminated.
** (the length does not include the terminating zero).
**
** If the property read fails or returns an empty value, the default
** value is used (if nonnull).
*/
int property_get(const char *key, char *value, const char *default_value);
/* property_set: returns 0 on success, < 0 on failure
*/
int property_set(const char *key, const char *value);
int property_list(void (*propfn)(const char *key, const char *value, void *cookie), void *cookie);
#if defined(__BIONIC_FORTIFY)
extern int __property_get_real(const char *, char *, const char *)
__asm__(__USER_LABEL_PREFIX__ "property_get");
__errordecl(__property_get_too_small_error, "property_get() called with too small of a buffer");
__BIONIC_FORTIFY_INLINE
int property_get(const char *key, char *value, const char *default_value) {
size_t bos = __bos(value);
if (bos < PROPERTY_VALUE_MAX) {
__property_get_too_small_error();
}
return __property_get_real(key, value, default_value);
}
#endif
#ifdef HAVE_SYSTEM_PROPERTY_SERVER
/*
* We have an external property server instead of built-in libc support.
* Used by the simulator.
*/
#define SYSTEM_PROPERTY_PIPE_NAME "/tmp/android-sysprop"
enum {
kSystemPropertyUnknown = 0,
kSystemPropertyGet,
kSystemPropertySet,
kSystemPropertyList
};
#endif /*HAVE_SYSTEM_PROPERTY_SERVER*/
#ifdef __cplusplus
}
#endif
#endif
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