1 // Copyright (C) 2021 The Android Open Source Project
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
6 //
7 // http://www.apache.org/licenses/LICENSE-2.0
8 //
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and
13 // limitations under the License.
14
15 #include <ditto/utils.h>
16
17 #include <sys/param.h>
18 #include <sys/stat.h>
19
20 #include <ditto/logger.h>
21
22 namespace dittosuite {
23
GetFileSize(SyscallInterface & syscall,int fd)24 int64_t GetFileSize(SyscallInterface& syscall, int fd) {
25 struct stat64 sb;
26 if (syscall.FStat(fd, &sb) == -1) {
27 PLOGF("Error while calling fstat() to get file size");
28 }
29 return sb.st_size;
30 }
31
GetFilePath(SyscallInterface & syscall,int fd)32 std::string GetFilePath(SyscallInterface& syscall, int fd) {
33 char file_path[PATH_MAX];
34 if (syscall.ReadLink("/proc/self/fd/" + std::to_string(fd), file_path, sizeof(file_path)) == -1) {
35 PLOGF("Error while calling readlink() to get file path");
36 }
37 return std::string(file_path);
38 }
39
FileExists(SyscallInterface & syscall,const std::string & path_name)40 bool FileExists(SyscallInterface& syscall, const std::string& path_name) {
41 return syscall.Access(path_name, F_OK) != -1;
42 }
43
44 } // namespace dittosuite
45