ec7e8cc9dd
Backport I110b653a58f3 All the other property stuff is already here. Property setting was only in libcutils previously to leverage a utility function / constant or two. Unfortunately in the process of fixing a race condition we would've had to do break abstraction boundaries and put some libc-internal details into libcutils so instead of that we'll just move this into bionic. Along with Iee1ca9b7, this now passes: $ adb shell am instrument -w -e class android.os.SystemPropertiesTest \ com.android.frameworks.coretests.systemproperties/android.test.InstrumentationTestRunner Bug: 3511230 Change-Id: I1b588db3344169621e1279ecc0b660cf4e1015d7
90 lines
3.3 KiB
C
90 lines
3.3 KiB
C
/*
|
|
* Copyright (C) 2008 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.
|
|
*/
|
|
|
|
#ifndef _INCLUDE_SYS_SYSTEM_PROPERTIES_H
|
|
#define _INCLUDE_SYS_SYSTEM_PROPERTIES_H
|
|
|
|
#include <sys/cdefs.h>
|
|
|
|
__BEGIN_DECLS
|
|
|
|
typedef struct prop_info prop_info;
|
|
|
|
#define PROP_NAME_MAX 32
|
|
#define PROP_VALUE_MAX 92
|
|
|
|
/* Look up a system property by name, copying its value and a
|
|
** \0 terminator to the provided pointer. The total bytes
|
|
** copied will be no greater than PROP_VALUE_MAX. Returns
|
|
** the string length of the value. A property that is not
|
|
** defined is identical to a property with a length 0 value.
|
|
*/
|
|
int __system_property_get(const char *name, char *value);
|
|
|
|
/* Set a system property by name.
|
|
**/
|
|
int __system_property_set(const char *key, const char *value);
|
|
|
|
/* Return a pointer to the system property named name, if it
|
|
** exists, or NULL if there is no such property. Use
|
|
** __system_property_read() to obtain the string value from
|
|
** the returned prop_info pointer.
|
|
**
|
|
** It is safe to cache the prop_info pointer to avoid future
|
|
** lookups. These returned pointers will remain valid for
|
|
** the lifetime of the system.
|
|
*/
|
|
const prop_info *__system_property_find(const char *name);
|
|
|
|
/* Read the value of a system property. Returns the length
|
|
** of the value. Copies the value and \0 terminator into
|
|
** the provided value pointer. Total length (including
|
|
** terminator) will be no greater that PROP_VALUE_MAX.
|
|
**
|
|
** If name is nonzero, up to PROP_NAME_MAX bytes will be
|
|
** copied into the provided name pointer. The name will
|
|
** be \0 terminated.
|
|
*/
|
|
int __system_property_read(const prop_info *pi, char *name, char *value);
|
|
|
|
/* Return a prop_info for the nth system property, or NULL if
|
|
** there is no nth property. Use __system_property_read() to
|
|
** read the value of this property.
|
|
**
|
|
** This method is for inspecting and debugging the property
|
|
** system. Please use __system_property_find() instead.
|
|
**
|
|
** Order of results may change from call to call. This is
|
|
** not a bug.
|
|
*/
|
|
const prop_info *__system_property_find_nth(unsigned n);
|
|
|
|
__END_DECLS
|
|
|
|
#endif
|