1 /* 2 * Copyright (C) 2016 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 #include "sysdeps/errno.h" 18 19 #include <errno.h> 20 21 #include <thread> 22 #include <unordered_map> 23 #include <utility> 24 25 #include "adb.h" 26 27 #if defined(_WIN32) 28 #define ETXTBSY EBUSY 29 #endif 30 31 // Use the linux asm-generic values for errno (which are used on all android archs but mips). 32 #define ERRNO_VALUES() \ 33 ERRNO_VALUE(EACCES, 13); \ 34 ERRNO_VALUE(EEXIST, 17); \ 35 ERRNO_VALUE(EFAULT, 14); \ 36 ERRNO_VALUE(EFBIG, 27); \ 37 ERRNO_VALUE(EINTR, 4); \ 38 ERRNO_VALUE(EINVAL, 22); \ 39 ERRNO_VALUE(EIO, 5); \ 40 ERRNO_VALUE(EISDIR, 21); \ 41 ERRNO_VALUE(ELOOP, 40); \ 42 ERRNO_VALUE(EMFILE, 24); \ 43 ERRNO_VALUE(ENAMETOOLONG, 36); \ 44 ERRNO_VALUE(ENFILE, 23); \ 45 ERRNO_VALUE(ENOENT, 2); \ 46 ERRNO_VALUE(ENOMEM, 12); \ 47 ERRNO_VALUE(ENOSPC, 28); \ 48 ERRNO_VALUE(ENOTDIR, 20); \ 49 ERRNO_VALUE(EOVERFLOW, 75); \ 50 ERRNO_VALUE(EPERM, 1); \ 51 ERRNO_VALUE(EROFS, 30); \ 52 ERRNO_VALUE(ETXTBSY, 26) 53 54 // Make sure these values are actually correct. 55 #if defined(__linux__) && !defined(__mips__) 56 #define ERRNO_VALUE(error_name, wire_value) static_assert((error_name) == (wire_value), "") 57 ERRNO_VALUES(); 58 #undef ERRNO_VALUE 59 #endif 60 61 static std::unordered_map<int, int>* generate_host_to_wire() { 62 auto result = new std::unordered_map<int, int>(); 63 #define ERRNO_VALUE(error_name, wire_value) \ 64 result->insert(std::make_pair((error_name), (wire_value))) 65 ERRNO_VALUES(); 66 #undef ERRNO_VALUE 67 return result; 68 } 69 70 static std::unordered_map<int, int>* generate_wire_to_host() { 71 auto result = new std::unordered_map<int, int>(); 72 #define ERRNO_VALUE(error_name, wire_value) \ 73 result->insert(std::make_pair((wire_value), (error_name))) 74 ERRNO_VALUES(); 75 #undef ERRNO_VALUE 76 return result; 77 } 78 79 static std::unordered_map<int, int>& host_to_wire = *generate_host_to_wire(); 80 static std::unordered_map<int, int>& wire_to_host = *generate_wire_to_host(); 81 82 int errno_to_wire(int error) { 83 auto it = host_to_wire.find(error); 84 if (it == host_to_wire.end()) { 85 LOG(ERROR) << "failed to convert errno " << error << " (" << strerror(error) << ") to wire"; 86 87 // Return EIO; 88 return 5; 89 } 90 return it->second; 91 } 92 93 int errno_from_wire(int error) { 94 auto it = host_to_wire.find(error); 95 if (it == host_to_wire.end()) { 96 LOG(ERROR) << "failed to convert errno " << error << " from wire"; 97 return EIO; 98 } 99 return it->second; 100 } 101
