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