1 /*
2 * Copyright (C) 2020 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 "src/profiling/symbolizer/filesystem.h"
18
19 #include "perfetto/base/build_config.h"
20
21 #if !PERFETTO_BUILDFLAG(PERFETTO_OS_WIN)
22 #if PERFETTO_BUILDFLAG(PERFETTO_LOCAL_SYMBOLIZER)
23 #include <fts.h>
24 #include <sys/stat.h>
25 #endif
26
27 #include <string>
28
29 #include "perfetto/ext/base/file_utils.h"
30
31 namespace perfetto {
32 namespace profiling {
33 #if PERFETTO_BUILDFLAG(PERFETTO_LOCAL_SYMBOLIZER)
WalkDirectories(std::vector<std::string> dirs,FileCallback fn)34 bool WalkDirectories(std::vector<std::string> dirs, FileCallback fn) {
35 std::vector<char*> dir_cstrs;
36 dir_cstrs.reserve(dirs.size());
37 for (std::string& dir : dirs)
38 dir_cstrs.emplace_back(&dir[0]);
39 dir_cstrs.push_back(nullptr);
40 base::ScopedResource<FTS*, fts_close, nullptr> fts(
41 fts_open(&dir_cstrs[0], FTS_LOGICAL | FTS_NOCHDIR, nullptr));
42 if (!fts) {
43 PERFETTO_PLOG("fts_open");
44 return false;
45 }
46 FTSENT* ent;
47 while ((ent = fts_read(*fts))) {
48 if (ent->fts_info & FTS_F)
49 fn(ent->fts_path, static_cast<size_t>(ent->fts_statp->st_size));
50 }
51 return true;
52 }
53
GetFileSize(const std::string & file_path)54 size_t GetFileSize(const std::string& file_path) {
55 base::ScopedFile fd(base::OpenFile(file_path, O_RDONLY | O_CLOEXEC));
56 if (!fd) {
57 PERFETTO_PLOG("Failed to get file size %s", file_path.c_str());
58 return 0;
59 }
60 struct stat buf;
61 if (fstat(*fd, &buf) == -1) {
62 return 0;
63 }
64 return static_cast<size_t>(buf.st_size);
65 }
66 #else
67 bool WalkDirectories(std::vector<std::string>, FileCallback) {
68 return false;
69 }
70 size_t GetFileSize(const std::string&) {
71 return 0;
72 }
73 #endif
74
75 } // namespace profiling
76 } // namespace perfetto
77
78 #endif // !PERFETTO_BUILDFLAG(PERFETTO_OS_WIN)
79