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69 lines
2.6 KiB
C++
69 lines
2.6 KiB
C++
// Copyright 2019 Google LLC
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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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// https://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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// The sandbox2::sanitizer namespace provides functions which bring a process
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// into a state in which it can be safely sandboxed.
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#ifndef SANDBOXED_API_SANDBOX2_SANITIZER_H_
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#define SANDBOXED_API_SANDBOX2_SANITIZER_H_
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#include "absl/base/macros.h"
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#include "absl/container/flat_hash_set.h"
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#include "absl/status/status.h"
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#include "absl/status/statusor.h"
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namespace sandbox2 {
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namespace sanitizer {
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// Reads a list of open file descriptors in the current process.
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absl::StatusOr<absl::flat_hash_set<int>> GetListOfFDs();
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// Closes all file descriptors in the current process except the ones in
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// fd_exceptions.
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absl::Status CloseAllFDsExcept(const absl::flat_hash_set<int>& fd_exceptions);
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// Marks all file descriptors as close-on-exec, except the ones in
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// fd_exceptions.
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absl::Status MarkAllFDsAsCOEExcept(
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const absl::flat_hash_set<int>& fd_exceptions);
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// Returns the number of threads in the process 'pid'. Returns -1 in case of
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// errors.
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int GetNumberOfThreads(int pid);
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// When running under a sanitizer, it may spawn a background threads. This is
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// not desirable for sandboxing purposes. We will notify its background thread
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// that we wish for it to finish and then wait for it to be done. It is safe to
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// call this function more than once, since it keeps track of whether it has
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// already notified the sanitizer. This function does nothing if not running
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// under a sanitizer.
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void WaitForSanitizer();
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ABSL_DEPRECATED("Use `sandbox2::sanitizer::WaitForSanitizer()`.")
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inline void WaitForTsan() { WaitForSanitizer(); }
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// Sanitizes current process (which will not execve a sandboxed binary).
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// File-descriptors in fd_exceptions will be either closed
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// (close_fds == true), or marked as close-on-exec (close_fds == false).
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absl::Status SanitizeCurrentProcess(
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const absl::flat_hash_set<int>& fd_exceptions, bool close_fds);
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// Returns a list of tasks for a pid.
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absl::StatusOr<absl::flat_hash_set<int>> GetListOfTasks(int pid);
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} // namespace sanitizer
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} // namespace sandbox2
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#endif // SANDBOXED_API_SANDBOX2_SANITIZER_H_
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