1 /*
2  * Copyright (C) 2007 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 ANDROID_ERRORS_H
18 #define ANDROID_ERRORS_H
19 
20 #include <sys/types.h>
21 #include <errno.h>
22 
23 namespace android {
24 
25 // use this type to return error codes
26 #ifdef _WIN32
27 typedef int         status_t;
28 #else
29 typedef int32_t     status_t;
30 #endif
31 
32 /* the MS C runtime lacks a few error codes */
33 
34 /*
35  * Error codes.
36  * All error codes are negative values.
37  */
38 
39 // Win32 #defines NO_ERROR as well.  It has the same value, so there's no
40 // real conflict, though it's a bit awkward.
41 #ifdef _WIN32
42 # undef NO_ERROR
43 #endif
44 
45 enum {
46     OK                = 0,    // Everything's swell.
47     NO_ERROR          = 0,    // No errors.
48 
49     UNKNOWN_ERROR       = (-2147483647-1), // INT32_MIN value
50 
51     NO_MEMORY           = -ENOMEM,
52     INVALID_OPERATION   = -ENOSYS,
53     BAD_VALUE           = -EINVAL,
54     BAD_TYPE            = (UNKNOWN_ERROR + 1),
55     NAME_NOT_FOUND      = -ENOENT,
56     PERMISSION_DENIED   = -EPERM,
57     NO_INIT             = -ENODEV,
58     ALREADY_EXISTS      = -EEXIST,
59     DEAD_OBJECT         = -EPIPE,
60     FAILED_TRANSACTION  = (UNKNOWN_ERROR + 2),
61 #if !defined(_WIN32)
62     BAD_INDEX           = -EOVERFLOW,
63     NOT_ENOUGH_DATA     = -ENODATA,
64     WOULD_BLOCK         = -EWOULDBLOCK,
65     TIMED_OUT           = -ETIMEDOUT,
66     UNKNOWN_TRANSACTION = -EBADMSG,
67 #else
68     BAD_INDEX           = -E2BIG,
69     NOT_ENOUGH_DATA     = (UNKNOWN_ERROR + 3),
70     WOULD_BLOCK         = (UNKNOWN_ERROR + 4),
71     TIMED_OUT           = (UNKNOWN_ERROR + 5),
72     UNKNOWN_TRANSACTION = (UNKNOWN_ERROR + 6),
73 #endif
74     FDS_NOT_ALLOWED     = (UNKNOWN_ERROR + 7),
75     UNEXPECTED_NULL     = (UNKNOWN_ERROR + 8),
76 };
77 
78 // Restore define; enumeration is in "android" namespace, so the value defined
79 // there won't work for Win32 code in a different namespace.
80 #ifdef _WIN32
81 # define NO_ERROR 0L
82 #endif
83 
84 }; // namespace android
85 
86 // ---------------------------------------------------------------------------
87 
88 #endif // ANDROID_ERRORS_H
89