0
Files
src/content/common/shared_file_util.h
Matthew Denton ab0ccd578e Linux: Fix exec'd process's use of base::FileDescriptorStore
See crbug.com/1407326. This fixes (1) and adds a test to
utility_process_host_browsertest.cc to ensure that this works in the
future when exec'ing a process (i.e. not launching from a zygote).

Bug: 692619, 1407326
Change-Id: I334400ebefac116611d3fc93d5ff5a7d83908eb7
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4159897
Commit-Queue: Alex Moshchuk <alexmos@chromium.org>
Commit-Queue: Matthew Denton <mpdenton@chromium.org>
Auto-Submit: Matthew Denton <mpdenton@chromium.org>
Reviewed-by: Alex Moshchuk <alexmos@chromium.org>
Reviewed-by: Tom Sepez <tsepez@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1104132}
2023-02-11 00:11:59 +00:00

46 lines
1.5 KiB
C++

// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CONTENT_COMMON_SHARED_FILE_UTIL_H_
#define CONTENT_COMMON_SHARED_FILE_UTIL_H_
#include <map>
#include <string>
#include "base/command_line.h"
#include "base/component_export.h"
#include "third_party/abseil-cpp/absl/types/optional.h"
namespace content {
// Populates the global instance of base::FileDescriptorStore using the
// information from the command line, assuming base::GlobalDescriptors has been
// initialized to hold the dynamically-generated descriptors (e.g. as happens in
// the zygote).
void PopulateFileDescriptorStoreFromGlobalDescriptors();
// Similar to PopulateFileDescriptorStoreFromGlobalDescriptors(), this will
// populate the global instance of base::FileDescriptorStore, but takes the FDs
// directly from the FD table, using the default FD numbers (i.e. descriptor_id
// + base::GlobalDescriptors::kBaseDescriptor). On Posix systems, exec'd
// processes should use this instead of
// PopulateFileDescriptorStoreFromGlobalDescriptors().
void PopulateFileDescriptorStoreFromFdTable();
class SharedFileSwitchValueBuilder final {
public:
void AddEntry(const std::string& key_str, int key_id);
const std::string& switch_value() const { return switch_value_; }
private:
std::string switch_value_;
};
absl::optional<std::map<int, std::string>> ParseSharedFileSwitchValue(
const std::string& value);
} // namespace content
#endif // CONTENT_COMMON_SHARED_FILE_UTIL_H_