1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
|
// Copyright 2014 The Bazel Authors. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package com.google.devtools.build.lib.sandbox;
import com.google.devtools.build.lib.actions.ExecutionStrategy;
import com.google.devtools.build.lib.actions.SpawnActionContext;
import com.google.devtools.build.lib.exec.AbstractSpawnStrategy;
import com.google.devtools.build.lib.exec.SpawnRunner;
import com.google.devtools.build.lib.runtime.CommandEnvironment;
import com.google.devtools.build.lib.vfs.FileSystemUtils;
import com.google.devtools.build.lib.vfs.Path;
import java.io.IOException;
import java.time.Duration;
import javax.annotation.Nullable;
/** Strategy that uses sandboxing to execute a process. */
// TODO(ulfjack): This class only exists for this annotation. Find a better way to handle this!
@ExecutionStrategy(
name = {"sandboxed", "linux-sandbox"},
contextType = SpawnActionContext.class
)
public final class LinuxSandboxedStrategy extends AbstractSpawnStrategy {
LinuxSandboxedStrategy(Path execRoot, SpawnRunner spawnRunner) {
super(execRoot, spawnRunner);
}
@Override
public String toString() {
return "linux-sandbox";
}
/**
* Creates a sandboxed spawn runner that uses the {@code linux-sandbox} tool.
*
* @param cmdEnv the command environment to use
* @param sandboxBase path to the sandbox base directory
* @param timeoutKillDelay additional grace period before killing timing out commands
* @param sandboxfsProcess instance of the sandboxfs process to use; may be null for none, in
* which case the runner uses a symlinked sandbox
*/
static LinuxSandboxedSpawnRunner create(
CommandEnvironment cmdEnv, Path sandboxBase, Duration timeoutKillDelay,
@Nullable SandboxfsProcess sandboxfsProcess) throws IOException {
Path inaccessibleHelperFile = sandboxBase.getRelative("inaccessibleHelperFile");
FileSystemUtils.touchFile(inaccessibleHelperFile);
inaccessibleHelperFile.setReadable(false);
inaccessibleHelperFile.setWritable(false);
inaccessibleHelperFile.setExecutable(false);
Path inaccessibleHelperDir = sandboxBase.getRelative("inaccessibleHelperDir");
inaccessibleHelperDir.createDirectory();
inaccessibleHelperDir.setReadable(false);
inaccessibleHelperDir.setWritable(false);
inaccessibleHelperDir.setExecutable(false);
return new LinuxSandboxedSpawnRunner(
cmdEnv,
sandboxBase,
inaccessibleHelperFile,
inaccessibleHelperDir,
timeoutKillDelay,
sandboxfsProcess);
}
}
|
