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sed -i '' -E -e 's/Copyright (.+) The Crashpad Authors\. All rights reserved\.$/Copyright \1 The Crashpad Authors/' $(git grep -El 'Copyright (.+) The Crashpad Authors\. All rights reserved\.$') Bug: chromium:1098010 Change-Id: I8d6138469ddbe3d281a5d83f64cf918ec2491611 Reviewed-on: https://chromium-review.googlesource.com/c/crashpad/crashpad/+/3878262 Reviewed-by: Joshua Peraza <jperaza@chromium.org> Commit-Queue: Mark Mentovai <mark@chromium.org>
70 lines
3.5 KiB
C++
70 lines
3.5 KiB
C++
// Copyright 2017 The Crashpad Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef CRASHPAD_UTIL_POSIX_SPAWN_SUBPROCESS_H_
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#define CRASHPAD_UTIL_POSIX_SPAWN_SUBPROCESS_H_
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#include <string>
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#include <vector>
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namespace crashpad {
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//! \brief Spawns a subprocess.
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//!
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//! A grandchild process will be started through the
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//! `fork()`-and-`posix_spawn()` pattern where supported, and
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//! double-`fork()`-and-`execv()` pattern elsewhere. This allows the grandchild
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//! to fully disassociate from the parent. The grandchild will not be a member
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//! of the parent’s process group or session and will not have a controlling
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//! terminal, providing isolation from signals not intended for it. The
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//! grandchild’s parent process, in terms of the process tree hierarchy, will be
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//! the process with process ID 1, relieving any other process of the
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//! responsibility to reap it via `waitpid()`. Aside from the three file
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//! descriptors associated with the standard input/output streams and any file
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//! descriptor passed in \a preserve_fd, the grandchild will not inherit any
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//! file descriptors from the parent process.
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//!
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//! \param[in] argv The argument vector to start the grandchild process with.
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//! `argv[0]` is used as the path to the executable.
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//! \param[in] envp A vector of environment variables of the form `var=value` to
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//! be passed to the spawned process. If this value is `nullptr`, the
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//! current environment is used.
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//! \param[in] preserve_fd A file descriptor to be inherited by the grandchild
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//! process. This file descriptor is inherited in addition to the three file
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//! descriptors associated with the standard input/output streams. Use `-1`
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//! if no additional file descriptors are to be inherited.
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//! \param[in] use_path Whether to consult the `PATH` environment variable when
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//! requested to start an executable at a non-absolute path.
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//! \param[in] child_function If not `nullptr`, this function will be called in
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//! the intermediate child process. Take note that this function will run in
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//! the context of a forked process, and must be safe for that purpose.
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//!
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//! \return `true` on success, and `false` on failure with a message logged.
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//! Only failures that occur in the parent process that indicate a definite
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//! failure to start the the grandchild are reported in the return value.
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//! Failures in the intermediate child or grandchild processes cannot be
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//! reported in the return value, and are addressed by logging a message and
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//! terminating. The caller assumes the responsibility for detecting such
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//! failures, for example, by observing a failure to perform a successful
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//! handshake with the grandchild process.
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bool SpawnSubprocess(const std::vector<std::string>& argv,
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const std::vector<std::string>* envp,
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int preserve_fd,
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bool use_path,
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void (*child_function)());
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} // namespace crashpad
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#endif // CRASHPAD_UTIL_POSIX_SPAWN_SUBPROCESS_H_
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