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 #include <string> 23 24 namespace android { 25 26 /** 27 * The type used to return success/failure from frameworks APIs. 28 * See the anonymous enum below for valid values. 29 */ 30 typedef int32_t status_t; 31 32 /* 33 * Error codes. 34 * All error codes are negative values. 35 */ 36 37 // Win32 #defines NO_ERROR as well. It has the same value, so there's no 38 // real conflict, though it's a bit awkward. 39 #ifdef _WIN32 40 # undef NO_ERROR 41 #endif 42 43 enum { 44 OK = 0, // Preferred constant for checking success. 45 NO_ERROR = OK, // Deprecated synonym for `OK`. Prefer `OK` because it doesn't conflict with Windows. 46 47 UNKNOWN_ERROR = (-2147483647-1), // INT32_MIN value 48 49 NO_MEMORY = -ENOMEM, 50 INVALID_OPERATION = -ENOSYS, 51 BAD_VALUE = -EINVAL, 52 BAD_TYPE = (UNKNOWN_ERROR + 1), 53 NAME_NOT_FOUND = -ENOENT, 54 PERMISSION_DENIED = -EPERM, 55 NO_INIT = -ENODEV, 56 ALREADY_EXISTS = -EEXIST, 57 DEAD_OBJECT = -EPIPE, 58 FAILED_TRANSACTION = (UNKNOWN_ERROR + 2), 59 #if !defined(_WIN32) 60 BAD_INDEX = -EOVERFLOW, 61 NOT_ENOUGH_DATA = -ENODATA, 62 WOULD_BLOCK = -EWOULDBLOCK, 63 TIMED_OUT = -ETIMEDOUT, 64 UNKNOWN_TRANSACTION = -EBADMSG, 65 #else 66 BAD_INDEX = -E2BIG, 67 NOT_ENOUGH_DATA = (UNKNOWN_ERROR + 3), 68 WOULD_BLOCK = (UNKNOWN_ERROR + 4), 69 TIMED_OUT = (UNKNOWN_ERROR + 5), 70 UNKNOWN_TRANSACTION = (UNKNOWN_ERROR + 6), 71 #endif 72 FDS_NOT_ALLOWED = (UNKNOWN_ERROR + 7), 73 UNEXPECTED_NULL = (UNKNOWN_ERROR + 8), 74 }; 75 76 // Human readable name of error 77 std::string statusToString(status_t status); 78 79 // Restore define; enumeration is in "android" namespace, so the value defined 80 // there won't work for Win32 code in a different namespace. 81 #ifdef _WIN32 82 # define NO_ERROR 0L 83 #endif 84 85 } // namespace android 86