| // Copyright 2015 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.common.collect.ImmutableMap; |
| import com.google.common.collect.ImmutableSet; |
| import com.google.common.collect.Lists; |
| import com.google.common.collect.Maps; |
| import com.google.devtools.build.lib.util.OptionsUtils; |
| import com.google.devtools.build.lib.util.RamResourceConverter; |
| import com.google.devtools.build.lib.util.ResourceConverter; |
| import com.google.devtools.build.lib.vfs.FileSystem; |
| import com.google.devtools.build.lib.vfs.Path; |
| import com.google.devtools.build.lib.vfs.PathFragment; |
| import com.google.devtools.common.options.Converter; |
| import com.google.devtools.common.options.Converters.TriStateConverter; |
| import com.google.devtools.common.options.Option; |
| import com.google.devtools.common.options.OptionDocumentationCategory; |
| import com.google.devtools.common.options.OptionEffectTag; |
| import com.google.devtools.common.options.OptionMetadataTag; |
| import com.google.devtools.common.options.OptionsBase; |
| import com.google.devtools.common.options.OptionsParsingException; |
| import com.google.devtools.common.options.TriState; |
| import java.io.IOException; |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| /** Options for sandboxed execution. */ |
| public class SandboxOptions extends OptionsBase { |
| |
| /** |
| * A converter for customized path mounting pair from the parameter list of a bazel command |
| * invocation. Pairs are expected to have the form 'source:target'. |
| */ |
| public static final class MountPairConverter |
| extends Converter.Contextless<ImmutableMap.Entry<String, String>> { |
| |
| @Override |
| public ImmutableMap.Entry<String, String> convert(String input) throws OptionsParsingException { |
| |
| List<String> paths = Lists.newArrayList(); |
| for (String path : input.split("(?<!\\\\):")) { // Split on ':' but not on '\:' |
| if (path != null && !path.trim().isEmpty()) { |
| paths.add(path.replace("\\:", ":")); |
| } else { |
| throw new OptionsParsingException( |
| "Input " |
| + input |
| + " contains one or more empty paths. " |
| + "Input must be a single path to mount inside the sandbox or " |
| + "a mounting pair in the form of 'source:target'"); |
| } |
| } |
| |
| if (paths.size() < 1 || paths.size() > 2) { |
| throw new OptionsParsingException( |
| "Input must be a single path to mount inside the sandbox or " |
| + "a mounting pair in the form of 'source:target'"); |
| } |
| |
| return paths.size() == 1 |
| ? Maps.immutableEntry(paths.get(0), paths.get(0)) |
| : Maps.immutableEntry(paths.get(0), paths.get(1)); |
| } |
| |
| @Override |
| public String getTypeDescription() { |
| return "a single path or a 'source:target' pair"; |
| } |
| } |
| |
| @Option( |
| name = "ignore_unsupported_sandboxing", |
| defaultValue = "false", |
| documentationCategory = OptionDocumentationCategory.LOGGING, |
| effectTags = {OptionEffectTag.TERMINAL_OUTPUT}, |
| help = "Do not print a warning when sandboxed execution is not supported on this system.") |
| public boolean ignoreUnsupportedSandboxing; |
| |
| @Option( |
| name = "sandbox_debug", |
| defaultValue = "false", |
| documentationCategory = OptionDocumentationCategory.LOGGING, |
| effectTags = {OptionEffectTag.TERMINAL_OUTPUT}, |
| help = |
| "Enables debugging features for the sandboxing feature. This includes two things: first, " |
| + "the sandbox root contents are left untouched after a build; and second, prints " |
| + "extra debugging information on execution. This can help developers of Bazel or " |
| + "Starlark rules with debugging failures due to missing input files, etc.") |
| public boolean sandboxDebug; |
| |
| @Option( |
| name = "sandbox_base", |
| oldName = "experimental_sandbox_base", |
| defaultValue = "", |
| documentationCategory = OptionDocumentationCategory.EXECUTION_STRATEGY, |
| effectTags = {OptionEffectTag.HOST_MACHINE_RESOURCE_OPTIMIZATIONS, OptionEffectTag.EXECUTION}, |
| help = |
| "Lets the sandbox create its sandbox directories underneath this path. Specify a path on" |
| + " tmpfs (like /run/shm) to possibly improve performance a lot when your build /" |
| + " tests have many input files. Note: You need enough RAM and free space on the" |
| + " tmpfs to hold output and intermediate files generated by running actions.") |
| public String sandboxBase; |
| |
| @Option( |
| name = "sandbox_fake_hostname", |
| defaultValue = "false", |
| documentationCategory = OptionDocumentationCategory.INPUT_STRICTNESS, |
| effectTags = {OptionEffectTag.EXECUTION}, |
| help = "Change the current hostname to 'localhost' for sandboxed actions.") |
| public boolean sandboxFakeHostname; |
| |
| @Option( |
| name = "sandbox_fake_username", |
| defaultValue = "false", |
| documentationCategory = OptionDocumentationCategory.INPUT_STRICTNESS, |
| effectTags = {OptionEffectTag.EXECUTION}, |
| help = "Change the current username to 'nobody' for sandboxed actions.") |
| public boolean sandboxFakeUsername; |
| |
| @Option( |
| name = "sandbox_explicit_pseudoterminal", |
| defaultValue = "false", |
| documentationCategory = OptionDocumentationCategory.EXECUTION_STRATEGY, |
| effectTags = {OptionEffectTag.EXECUTION}, |
| help = |
| "Explicitly enable the creation of pseudoterminals for sandboxed actions." |
| + " Some linux distributions require setting the group id of the process to 'tty'" |
| + " inside the sandbox in order for pseudoterminals to function. If this is" |
| + " causing issues, this flag can be disabled to enable other groups to be used.") |
| public boolean sandboxExplicitPseudoterminal; |
| |
| @Option( |
| name = "sandbox_block_path", |
| allowMultiple = true, |
| defaultValue = "null", |
| documentationCategory = OptionDocumentationCategory.INPUT_STRICTNESS, |
| effectTags = {OptionEffectTag.EXECUTION}, |
| help = "For sandboxed actions, disallow access to this path.") |
| public List<String> sandboxBlockPath; |
| |
| @Option( |
| name = "sandbox_tmpfs_path", |
| allowMultiple = true, |
| converter = OptionsUtils.AbsolutePathFragmentConverter.class, |
| defaultValue = "null", |
| documentationCategory = OptionDocumentationCategory.EXECUTION_STRATEGY, |
| effectTags = {OptionEffectTag.HOST_MACHINE_RESOURCE_OPTIMIZATIONS, OptionEffectTag.EXECUTION}, |
| help = |
| "For sandboxed actions, mount an empty, writable directory at this absolute path" |
| + " (if supported by the sandboxing implementation, ignored otherwise).") |
| public List<PathFragment> sandboxTmpfsPath; |
| |
| @Option( |
| name = "sandbox_writable_path", |
| allowMultiple = true, |
| defaultValue = "null", |
| documentationCategory = OptionDocumentationCategory.INPUT_STRICTNESS, |
| effectTags = {OptionEffectTag.EXECUTION}, |
| help = |
| "For sandboxed actions, make an existing directory writable in the sandbox" |
| + " (if supported by the sandboxing implementation, ignored otherwise).") |
| public List<String> sandboxWritablePath; |
| |
| @Option( |
| name = "sandbox_add_mount_pair", |
| allowMultiple = true, |
| converter = MountPairConverter.class, |
| defaultValue = "null", |
| documentationCategory = OptionDocumentationCategory.INPUT_STRICTNESS, |
| effectTags = {OptionEffectTag.EXECUTION}, |
| help = "Add additional path pair to mount in sandbox.") |
| public List<ImmutableMap.Entry<String, String>> sandboxAdditionalMounts; |
| |
| @Option( |
| name = "experimental_sandboxfs_map_symlink_targets", |
| defaultValue = "false", |
| documentationCategory = OptionDocumentationCategory.INPUT_STRICTNESS, |
| effectTags = {OptionEffectTag.HOST_MACHINE_RESOURCE_OPTIMIZATIONS, OptionEffectTag.EXECUTION}, |
| help = "No-op") |
| public boolean sandboxfsMapSymlinkTargets; |
| |
| @Option( |
| name = "experimental_use_windows_sandbox", |
| converter = TriStateConverter.class, |
| defaultValue = "false", |
| documentationCategory = OptionDocumentationCategory.EXECUTION_STRATEGY, |
| effectTags = {OptionEffectTag.EXECUTION}, |
| help = |
| "Use Windows sandbox to run actions. " |
| + "If \"yes\", the binary provided by --experimental_windows_sandbox_path must be " |
| + "valid and correspond to a supported version of sandboxfs. If \"auto\", the binary " |
| + "may be missing or not compatible.") |
| public TriState useWindowsSandbox; |
| |
| @Option( |
| name = "experimental_windows_sandbox_path", |
| defaultValue = "BazelSandbox.exe", |
| documentationCategory = OptionDocumentationCategory.EXECUTION_STRATEGY, |
| effectTags = {OptionEffectTag.EXECUTION}, |
| help = |
| "Path to the Windows sandbox binary to use when --experimental_use_windows_sandbox is" |
| + " true. If a bare name, use the first binary of that name found in the PATH.") |
| public String windowsSandboxPath; |
| |
| public ImmutableSet<Path> getInaccessiblePaths(FileSystem fs) { |
| List<Path> inaccessiblePaths = new ArrayList<>(); |
| for (String path : sandboxBlockPath) { |
| Path blockedPath = fs.getPath(path); |
| try { |
| inaccessiblePaths.add(blockedPath.resolveSymbolicLinks()); |
| } catch (IOException e) { |
| // It's OK to block access to an invalid symlink. In this case we'll just make the symlink |
| // itself inaccessible, instead of the target, though. |
| inaccessiblePaths.add(blockedPath); |
| } |
| } |
| return ImmutableSet.copyOf(inaccessiblePaths); |
| } |
| |
| @Option( |
| name = "experimental_enable_docker_sandbox", |
| defaultValue = "false", |
| documentationCategory = OptionDocumentationCategory.EXECUTION_STRATEGY, |
| effectTags = {OptionEffectTag.EXECUTION}, |
| help = |
| "Enable Docker-based sandboxing. This option has no effect if Docker is not installed.") |
| public boolean enableDockerSandbox; |
| |
| @Option( |
| name = "experimental_docker_image", |
| defaultValue = "", |
| documentationCategory = OptionDocumentationCategory.EXECUTION_STRATEGY, |
| effectTags = {OptionEffectTag.EXECUTION}, |
| help = |
| "Specify a Docker image name (e.g. \"ubuntu:latest\") that should be used to execute a" |
| + " sandboxed action when using the docker strategy and the action itself doesn't" |
| + " already have a container-image attribute in its remote_execution_properties in" |
| + " the platform description. The value of this flag is passed verbatim to 'docker" |
| + " run', so it supports the same syntax and mechanisms as Docker itself.") |
| public String dockerImage; |
| |
| @Option( |
| name = "experimental_docker_use_customized_images", |
| defaultValue = "true", |
| documentationCategory = OptionDocumentationCategory.EXECUTION_STRATEGY, |
| effectTags = {OptionEffectTag.EXECUTION}, |
| help = |
| "If enabled, injects the uid and gid of the current user into the Docker image before" |
| + " using it. This is required if your build / tests depend on the user having a name" |
| + " and home directory inside the container. This is on by default, but you can" |
| + " disable it in case the automatic image customization feature doesn't work in your" |
| + " case or you know that you don't need it.") |
| public boolean dockerUseCustomizedImages; |
| |
| @Option( |
| name = "experimental_docker_verbose", |
| defaultValue = "false", |
| documentationCategory = OptionDocumentationCategory.LOGGING, |
| effectTags = {OptionEffectTag.EXECUTION}, |
| help = |
| "If enabled, Bazel will print more verbose messages about the Docker sandbox strategy.") |
| public boolean dockerVerbose; |
| |
| @Option( |
| name = "experimental_docker_privileged", |
| defaultValue = "false", |
| documentationCategory = OptionDocumentationCategory.INPUT_STRICTNESS, |
| effectTags = {OptionEffectTag.EXECUTION}, |
| help = |
| "If enabled, Bazel will pass the --privileged flag to 'docker run' when running actions. " |
| + "This might be required by your build, but it might also result in reduced " |
| + "hermeticity.") |
| public boolean dockerPrivileged; |
| |
| @Option( |
| name = "sandbox_default_allow_network", |
| oldName = "experimental_sandbox_default_allow_network", |
| defaultValue = "true", |
| documentationCategory = OptionDocumentationCategory.INPUT_STRICTNESS, |
| effectTags = {OptionEffectTag.EXECUTION}, |
| help = |
| "Allow network access by default for actions; this may not work with all sandboxing " |
| + "implementations.") |
| public boolean defaultSandboxAllowNetwork; |
| |
| @Option( |
| name = "experimental_sandbox_async_tree_delete_idle_threads", |
| defaultValue = "4", |
| converter = AsyncTreeDeletesConverter.class, |
| documentationCategory = OptionDocumentationCategory.EXECUTION_STRATEGY, |
| effectTags = {OptionEffectTag.HOST_MACHINE_RESOURCE_OPTIMIZATIONS, OptionEffectTag.EXECUTION}, |
| help = |
| "If 0, delete sandbox trees as soon as an action completes (causing completion of the " |
| + "action to be delayed). If greater than zero, execute the deletion of such threes" |
| + " on an asynchronous thread pool that has size 1 when the build is running and" |
| + " grows to the size specified by this flag when the server is idle.") |
| public int asyncTreeDeleteIdleThreads; |
| |
| @Option( |
| name = "incompatible_legacy_local_fallback", |
| defaultValue = "false", |
| documentationCategory = OptionDocumentationCategory.INPUT_STRICTNESS, |
| effectTags = {OptionEffectTag.EXECUTION}, |
| metadataTags = {OptionMetadataTag.INCOMPATIBLE_CHANGE}, |
| help = |
| "If set to true, enables the legacy implicit fallback from sandboxed to local strategy." |
| + " This flag will eventually default to false and then become a no-op. Use" |
| + " --strategy, --spawn_strategy, or --dynamic_local_strategy to configure fallbacks" |
| + " instead.") |
| public boolean legacyLocalFallback; |
| |
| @Option( |
| name = "reuse_sandbox_directories", |
| oldName = "experimental_reuse_sandbox_directories", |
| oldNameWarning = false, |
| defaultValue = "true", |
| documentationCategory = OptionDocumentationCategory.EXECUTION_STRATEGY, |
| effectTags = {OptionEffectTag.HOST_MACHINE_RESOURCE_OPTIMIZATIONS, OptionEffectTag.EXECUTION}, |
| help = |
| "If set to true, directories used by sandboxed non-worker execution may be reused to" |
| + " avoid unnecessary setup costs.") |
| public boolean reuseSandboxDirectories; |
| |
| @Option( |
| name = "experimental_use_hermetic_linux_sandbox", |
| defaultValue = "false", |
| documentationCategory = OptionDocumentationCategory.EXECUTION_STRATEGY, |
| effectTags = {OptionEffectTag.EXECUTION}, |
| help = |
| "If set to true, do not mount root, only mount whats provided with " |
| + "sandbox_add_mount_pair. Input files will be hardlinked to the sandbox instead of " |
| + "symlinked to from the sandbox. " |
| + "If action input files are located on a filesystem different from the sandbox, " |
| + "then the input files will be copied instead.") |
| public boolean useHermetic; |
| |
| @Option( |
| name = "incompatible_sandbox_hermetic_tmp", |
| defaultValue = "true", |
| documentationCategory = OptionDocumentationCategory.EXECUTION_STRATEGY, |
| effectTags = {OptionEffectTag.EXECUTION}, |
| help = |
| "If set to true, each Linux sandbox will have its own dedicated empty directory mounted" |
| + " as /tmp rather than sharing /tmp with the host filesystem. Use" |
| + " --sandbox_add_mount_pair=/tmp to keep seeing the host's /tmp in all sandboxes.") |
| public boolean sandboxHermeticTmp; |
| |
| @Option( |
| name = "experimental_sandbox_memory_limit_mb", |
| defaultValue = "0", |
| documentationCategory = OptionDocumentationCategory.EXECUTION_STRATEGY, |
| effectTags = {OptionEffectTag.EXECUTION}, |
| converter = RamResourceConverter.class, |
| help = |
| "If > 0, each Linux sandbox will be limited to the given amount of memory (in MB)." |
| + " Requires cgroups v1 or v2 and permissions for the users to the cgroups dir.") |
| public int memoryLimitMb; |
| |
| /** Converter for the number of threads used for asynchronous tree deletion. */ |
| public static final class AsyncTreeDeletesConverter extends ResourceConverter.IntegerConverter { |
| public AsyncTreeDeletesConverter() { |
| super(/* auto= */ HOST_CPUS_SUPPLIER, /* minValue= */ 0, /* maxValue= */ Integer.MAX_VALUE); |
| } |
| } |
| } |
