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author | Treehugger Robot | 2018-06-25 17:28:10 -0500 |
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committer | Gerrit Code Review | 2018-06-25 17:28:10 -0500 |
commit | 9d254f0dacc95a296df268eaa6a61cf3e7d144d2 (patch) | |
tree | ea9ae663e8709b0dc029ab6ac96365355c16c61e /fs_mgr/libdm/test_util.cpp | |
parent | 516ec4c2570411039975e0fcdba9b5f8d9b31b3b (diff) | |
parent | 2d3e79f5d5f04274e5415a30417b1f05ac65ab1d (diff) | |
download | platform-system-core-900d8ec38b057bd16c55e307d7096e0254b28e05.tar.gz platform-system-core-900d8ec38b057bd16c55e307d7096e0254b28e05.tar.xz platform-system-core-900d8ec38b057bd16c55e307d7096e0254b28e05.zip |
Merge "libdm: Add unit tests for dm-linear."android-p-preview-4
Diffstat (limited to 'fs_mgr/libdm/test_util.cpp')
-rw-r--r-- | fs_mgr/libdm/test_util.cpp | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/fs_mgr/libdm/test_util.cpp b/fs_mgr/libdm/test_util.cpp new file mode 100644 index 000000000..307251cda --- /dev/null +++ b/fs_mgr/libdm/test_util.cpp | |||
@@ -0,0 +1,52 @@ | |||
1 | /* | ||
2 | * Copyright (C) 2018 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 <fcntl.h> | ||
18 | #include <linux/memfd.h> | ||
19 | #include <stdio.h> | ||
20 | #include <sys/syscall.h> | ||
21 | #include <sys/types.h> | ||
22 | #include <unistd.h> | ||
23 | |||
24 | #include "test_util.h" | ||
25 | |||
26 | namespace android { | ||
27 | namespace dm { | ||
28 | |||
29 | using unique_fd = android::base::unique_fd; | ||
30 | |||
31 | // Create a temporary in-memory file. If size is non-zero, the file will be | ||
32 | // created with a fixed size. | ||
33 | unique_fd CreateTempFile(const std::string& name, size_t size) { | ||
34 | unique_fd fd(syscall(__NR_memfd_create, name.c_str(), MFD_ALLOW_SEALING)); | ||
35 | if (fd < 0) { | ||
36 | return {}; | ||
37 | } | ||
38 | if (size) { | ||
39 | if (ftruncate(fd, size) < 0) { | ||
40 | perror("ftruncate"); | ||
41 | return {}; | ||
42 | } | ||
43 | if (fcntl(fd, F_ADD_SEALS, F_SEAL_GROW | F_SEAL_SHRINK) < 0) { | ||
44 | perror("fcntl"); | ||
45 | return {}; | ||
46 | } | ||
47 | } | ||
48 | return fd; | ||
49 | } | ||
50 | |||
51 | } // namespace dm | ||
52 | } // namespace android | ||