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1e494cf4 JB |
1 | /* |
2 | * Copyright (C) 2006 The Android Open Source Project | |
3 | * | |
4 | * Licensed under the Apache License, Version 2.0 (the "License"); | |
5 | * you may not use this file except in compliance with the License. | |
6 | * You may obtain a copy of the License at | |
7 | * | |
8 | * http://www.apache.org/licenses/LICENSE-2.0 | |
9 | * | |
10 | * Unless required by applicable law or agreed to in writing, software | |
11 | * distributed under the License is distributed on an "AS IS" BASIS, | |
12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
13 | * See the License for the specific language governing permissions and | |
14 | * limitations under the License. | |
15 | */ | |
16 | ||
17 | #ifndef __CUTILS_PROPERTIES_H | |
18 | #define __CUTILS_PROPERTIES_H | |
19 | ||
20 | #ifdef __cplusplus | |
21 | extern "C" { | |
22 | #endif | |
23 | ||
24 | /* System properties are *small* name value pairs managed by the | |
25 | ** property service. If your data doesn't fit in the provided | |
26 | ** space it is not appropriate for a system property. | |
27 | ** | |
28 | ** WARNING: system/bionic/include/sys/system_properties.h also defines | |
29 | ** these, but with different names. (TODO: fix that) | |
30 | */ | |
31 | #define PROPERTY_KEY_MAX 32 | |
32 | #define PROPERTY_VALUE_MAX 92 | |
33 | ||
34 | /* property_get: returns the length of the value which will never be | |
35 | ** greater than PROPERTY_VALUE_MAX - 1 and will always be zero terminated. | |
36 | ** (the length does not include the terminating zero). | |
37 | ** | |
38 | ** If the property read fails or returns an empty value, the default | |
39 | ** value is used (if nonnull). | |
40 | */ | |
41 | int property_get(const char *key, char *value, const char *default_value); | |
42 | ||
43 | /* property_set: returns 0 on success, < 0 on failure | |
44 | */ | |
45 | int property_set(const char *key, const char *value); | |
46 | ||
47 | /* property_set_sync: returns 0 on success, < 0 on failure | |
48 | ** | |
49 | ** symbol needed for Motorola RILs. Calls property_set | |
50 | */ | |
51 | int property_set_sync(const char *key, const char *value); | |
52 | ||
53 | int property_list(void (*propfn)(const char *key, const char *value, void *cookie), void *cookie); | |
54 | ||
55 | ||
56 | #ifdef HAVE_SYSTEM_PROPERTY_SERVER | |
57 | /* | |
58 | * We have an external property server instead of built-in libc support. | |
59 | * Used by the simulator. | |
60 | */ | |
61 | #define SYSTEM_PROPERTY_PIPE_NAME "/tmp/android-sysprop" | |
62 | ||
63 | enum { | |
64 | kSystemPropertyUnknown = 0, | |
65 | kSystemPropertyGet, | |
66 | kSystemPropertySet, | |
67 | kSystemPropertyList | |
68 | }; | |
69 | #endif /*HAVE_SYSTEM_PROPERTY_SERVER*/ | |
70 | ||
71 | ||
72 | #ifdef __cplusplus | |
73 | } | |
74 | #endif | |
75 | ||
76 | #endif |