|  | // Copyright (c) 2013 The Chromium Authors. All rights reserved. | 
|  | // Use of this source code is governed by a BSD-style license that can be | 
|  | // found in the LICENSE file. | 
|  |  | 
|  | #include "base/process/process_handle.h" | 
|  |  | 
|  | #include <libproc.h> | 
|  | #include <stddef.h> | 
|  | #include <sys/sysctl.h> | 
|  | #include <sys/types.h> | 
|  |  | 
|  | #include "base/logging.h" | 
|  |  | 
|  | namespace base { | 
|  |  | 
|  | ProcessId GetParentProcessId(ProcessHandle process) { | 
|  | struct kinfo_proc info; | 
|  | size_t length = sizeof(struct kinfo_proc); | 
|  | int mib[4] = { CTL_KERN, KERN_PROC, KERN_PROC_PID, process }; | 
|  | if (sysctl(mib, 4, &info, &length, NULL, 0) < 0) { | 
|  | DPLOG(ERROR) << "sysctl"; | 
|  | return -1; | 
|  | } | 
|  | if (length == 0) | 
|  | return -1; | 
|  | return info.kp_eproc.e_ppid; | 
|  | } | 
|  |  | 
|  | FilePath GetProcessExecutablePath(ProcessHandle process) { | 
|  | char pathbuf[PROC_PIDPATHINFO_MAXSIZE]; | 
|  | if (!proc_pidpath(process, pathbuf, sizeof(pathbuf))) | 
|  | return FilePath(); | 
|  |  | 
|  | return FilePath(pathbuf); | 
|  | } | 
|  |  | 
|  | }  // namespace base |