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 <unistd.h>
10
11 namespace base {
12
GetParentProcessId(ProcessHandle process)13 ProcessId GetParentProcessId(ProcessHandle process) {
14 struct kinfo_proc info;
15 size_t length;
16 int mib[] = { CTL_KERN, KERN_PROC, KERN_PROC_PID, process,
17 sizeof(struct kinfo_proc), 0 };
18
19 if (sysctl(mib, arraysize(mib), NULL, &length, NULL, 0) < 0)
20 return -1;
21
22 mib[5] = (length / sizeof(struct kinfo_proc));
23
24 if (sysctl(mib, arraysize(mib), &info, &length, NULL, 0) < 0)
25 return -1;
26
27 return info.p_ppid;
28 }
29
GetProcessExecutablePath(ProcessHandle process)30 FilePath GetProcessExecutablePath(ProcessHandle process) {
31 struct kinfo_proc kp;
32 size_t len;
33 int mib[] = { CTL_KERN, KERN_PROC, KERN_PROC_PID, process,
34 sizeof(struct kinfo_proc), 0 };
35
36 if (sysctl(mib, arraysize(mib), NULL, &len, NULL, 0) == -1)
37 return FilePath();
38 mib[5] = (len / sizeof(struct kinfo_proc));
39 if (sysctl(mib, arraysize(mib), &kp, &len, NULL, 0) < 0)
40 return FilePath();
41 if ((kp.p_flag & P_SYSTEM) != 0)
42 return FilePath();
43 if (strcmp(kp.p_comm, "chrome") == 0)
44 return FilePath(kp.p_comm);
45
46 return FilePath();
47 }
48
49 } // namespace base
50