1// Copyright (c) 2013 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 <libproc.h>
8#include <stddef.h>
9#include <sys/sysctl.h>
10#include <sys/types.h>
11
12#include "base/logging.h"
13
14namespace base {
15
16ProcessId GetParentProcessId(ProcessHandle process) {
17  struct kinfo_proc info;
18  size_t length = sizeof(struct kinfo_proc);
19  int mib[4] = { CTL_KERN, KERN_PROC, KERN_PROC_PID, process };
20  if (sysctl(mib, 4, &info, &length, NULL, 0) < 0) {
21    DPLOG(ERROR) << "sysctl";
22    return -1;
23  }
24  if (length == 0)
25    return -1;
26  return info.kp_eproc.e_ppid;
27}
28
29FilePath GetProcessExecutablePath(ProcessHandle process) {
30  char pathbuf[PROC_PIDPATHINFO_MAXSIZE];
31  if (!proc_pidpath(process, pathbuf, sizeof(pathbuf)))
32    return FilePath();
33
34  return FilePath(pathbuf);
35}
36
37}  // namespace base
38