1// Copyright (c) 2011 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#include "base/process/process_handle.h"
6
7#include <sys/sysctl.h>
8#include <sys/types.h>
9#include <sys/user.h>
10#include <unistd.h>
11
12namespace base {
13
14ProcessId GetParentProcessId(ProcessHandle process) {
15  struct kinfo_proc info;
16  size_t length;
17  int mib[] = { CTL_KERN, KERN_PROC, KERN_PROC_PID, process };
18
19  if (sysctl(mib, arraysize(mib), &info, &length, NULL, 0) < 0)
20    return -1;
21
22  return info.ki_ppid;
23}
24
25FilePath GetProcessExecutablePath(ProcessHandle process) {
26  char pathname[PATH_MAX];
27  size_t length;
28  int mib[] = { CTL_KERN, KERN_PROC, KERN_PROC_PATHNAME, process };
29
30  length = sizeof(pathname);
31
32  if (sysctl(mib, arraysize(mib), pathname, &length, NULL, 0) < 0 ||
33      length == 0) {
34    return FilePath();
35  }
36
37  return FilePath(std::string(pathname));
38}
39
40}  // namespace base
41