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/stat.h" 18 19 #include <errno.h> 20 #include <sys/stat.h> 21 #include <sys/types.h> 22 #include <unistd.h> 23 24 #include <string> 25 26 #include <android-base/utf8.h> 27 28 // Version of stat() that takes a UTF-8 path. 29 int adb_stat(const char* path, struct adb_stat* s) { 30 // This definition of wstat seems to be missing from <sys/stat.h>. 31 #if defined(_FILE_OFFSET_BITS) && (_FILE_OFFSET_BITS == 64) 32 #ifdef _USE_32BIT_TIME_T 33 #define wstat _wstat32i64 34 #else 35 #define wstat _wstat64 36 #endif 37 #else 38 // <sys/stat.h> has a function prototype for wstat() that should be available. 39 #endif 40 41 std::wstring path_wide; 42 if (!android::base::UTF8ToWide(path, &path_wide)) { 43 errno = ENOENT; 44 return -1; 45 } 46 47 // If the path has a trailing slash, stat will fail with ENOENT regardless of whether the path 48 // is a directory or not. 49 bool expected_directory = false; 50 while (*path_wide.rbegin() == u'/' || *path_wide.rbegin() == u'\\') { 51 path_wide.pop_back(); 52 expected_directory = true; 53 } 54 55 struct adb_stat st; 56 int result = wstat(path_wide.c_str(), &st); 57 if (result == 0 && expected_directory) { 58 if (!S_ISDIR(st.st_mode)) { 59 errno = ENOTDIR; 60 return -1; 61 } 62 } 63 64 memcpy(s, &st, sizeof(st)); 65 return result; 66 } 67
