1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
content / browser / sandbox_host_linux.h [blame]
// Copyright 2012 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_BROWSER_SANDBOX_HOST_LINUX_H_
#define CONTENT_BROWSER_SANDBOX_HOST_LINUX_H_
#include <memory>
#include "base/check.h"
#include "base/no_destructor.h"
#include "base/threading/simple_thread.h"
#include "content/browser/sandbox_ipc_linux.h"
namespace content {
// This is a singleton object which handles sandbox requests from the
// sandboxed processes.
class SandboxHostLinux {
public:
// Returns the singleton instance.
static SandboxHostLinux* GetInstance();
SandboxHostLinux(const SandboxHostLinux&) = delete;
SandboxHostLinux& operator=(const SandboxHostLinux&) = delete;
// Get the file descriptor which sandboxed processes should be given in order
// to communicate with the browser. This is used for things like communicating
// renderer crashes to the browser, as well as requesting fonts from sandboxed
// processes.
int GetChildSocket() const {
DCHECK(initialized_);
return child_socket_;
}
void Init();
bool IsInitialized() const { return initialized_; }
private:
friend class base::NoDestructor<SandboxHostLinux>;
// This object must be constructed on the main thread. It then lives for the
// lifetime of the process (and resources are reclaimed by the OS when the
// process dies).
SandboxHostLinux();
~SandboxHostLinux() = delete;
// Whether Init() has been called yet.
bool initialized_ = false;
int child_socket_ = 0;
int childs_lifeline_fd_ = 0;
std::unique_ptr<SandboxIPCHandler> ipc_handler_;
std::unique_ptr<base::DelegateSimpleThread> ipc_thread_;
};
} // namespace content
#endif // CONTENT_BROWSER_SANDBOX_HOST_LINUX_H_