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 <sys/sysctl.h> 8 #include <sys/types.h> 9 10 #include "base/logging.h" 11 12 namespace base { 13 GetParentProcessId(ProcessHandle process)14ProcessId GetParentProcessId(ProcessHandle process) { 15 struct kinfo_proc info; 16 size_t length = sizeof(struct kinfo_proc); 17 int mib[4] = { CTL_KERN, KERN_PROC, KERN_PROC_PID, process }; 18 if (sysctl(mib, 4, &info, &length, NULL, 0) < 0) { 19 DPLOG(ERROR) << "sysctl"; 20 return -1; 21 } 22 if (length == 0) 23 return -1; 24 return info.kp_eproc.e_ppid; 25 } 26 27 } // namespace base 28