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1/* Copyright (C) 1991-2019 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
8
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <http://www.gnu.org/licenses/>. */
17
18#include <hurd.h>
19#include <lowlevellock.h>
20
21pid_t _hurd_pid, _hurd_ppid, _hurd_pgrp;
22int _hurd_orphaned;
23
24static void
25init_pids (void)
26{
27 __USEPORT (PROC,
28 ({
29 __proc_getpids (port, &_hurd_pid, &_hurd_ppid, &_hurd_orphaned);
30 __proc_getpgrp (port, _hurd_pid, &_hurd_pgrp);
31 }));
32
33 (void) &init_pids; /* Avoid "defined but not used" warning. */
34}
35
36text_set_element (_hurd_proc_subinit, init_pids);
37
38#include <hurd/msg_server.h>
39#include "set-hooks.h"
40#include <cthreads.h>
41
42DEFINE_HOOK (_hurd_pgrp_changed_hook, (pid_t));
43
44/* These let user threads synchronize with an operation which changes ids. */
45unsigned int _hurd_pids_changed_stamp;
46struct condition _hurd_pids_changed_sync;
47
48kern_return_t
49_S_msg_proc_newids (mach_port_t me,
50 task_t task,
51 pid_t ppid, pid_t pgrp, int orphaned)
52{
53 int pgrp_changed;
54
55 if (task != __mach_task_self ())
56 return EPERM;
57
58 __mach_port_deallocate (__mach_task_self (), task);
59
60 pgrp_changed = pgrp != _hurd_pgrp;
61 _hurd_ppid = ppid;
62 _hurd_pgrp = pgrp;
63 _hurd_orphaned = orphaned;
64
65 if (pgrp_changed)
66 /* Run things that want notification of a pgrp change. */
67 RUN_HOOK (_hurd_pgrp_changed_hook, (pgrp));
68
69 /* Notify any waiting user threads that the id change as been completed. */
70 ++_hurd_pids_changed_stamp;
71 lll_wake (&_hurd_pids_changed_stamp, GSYNC_BROADCAST);
72
73 return 0;
74}
75

Warning: That file was not part of the compilation database. It may have many parsing errors.