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content / public / common / zygote / sandbox_support_linux.h [blame]
// 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_PUBLIC_COMMON_ZYGOTE_SANDBOX_SUPPORT_LINUX_H_
#define CONTENT_PUBLIC_COMMON_ZYGOTE_SANDBOX_SUPPORT_LINUX_H_
#include <stddef.h>
#include "content/common/content_export.h"
class NaClListener;
namespace content {
// TODO(crbug.com/41470149): Remove this when NaCl is unshipped.
class CONTENT_EXPORT SharedMemoryIPCSupport {
private:
friend class ::NaClListener;
// Returns a file descriptor for a shared memory segment. The
// executable flag indicates that the caller intends to use mprotect
// with PROT_EXEC after making a mapping, but not that it intends to
// mmap with PROT_EXEC in the first place. (Some systems, such as
// ChromeOS, disallow PROT_EXEC in mmap on /dev/shm files but do allow
// PROT_EXEC in mprotect on mappings from such files. This function
// can yield an object that has that constraint.)
static int MakeSharedMemorySegment(size_t length, bool executable);
SharedMemoryIPCSupport() = delete;
};
// Gets the well-known file descriptor on which we expect to find the
// sandbox IPC channel.
CONTENT_EXPORT int GetSandboxFD();
} // namespace content
#endif // CONTENT_PUBLIC_COMMON_ZYGOTE_SANDBOX_SUPPORT_LINUX_H_