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dff8da6b | 1 | /* Copyright (C) 1991-2024 Free Software Foundation, Inc. |
c84142e8 | 2 | This file is part of the GNU C Library. |
28f540f4 | 3 | |
c84142e8 | 4 | The GNU C Library is free software; you can redistribute it and/or |
41bdb6e2 AJ |
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. | |
28f540f4 | 8 | |
c84142e8 UD |
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 | |
41bdb6e2 | 12 | Lesser General Public License for more details. |
28f540f4 | 13 | |
41bdb6e2 | 14 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 | 15 | License along with the GNU C Library; if not, see |
5a82c748 | 16 | <https://www.gnu.org/licenses/>. */ |
28f540f4 RM |
17 | |
18 | #include <hurd.h> | |
fb4cc8a0 | 19 | #include <lowlevellock.h> |
ae49f218 | 20 | #include "set-hooks.h" |
fb4cc8a0 | 21 | |
28f540f4 RM |
22 | pid_t _hurd_pid, _hurd_ppid, _hurd_pgrp; |
23 | int _hurd_orphaned; | |
24 | ||
ae49f218 | 25 | static void attribute_used_retain |
28f540f4 RM |
26 | init_pids (void) |
27 | { | |
28 | __USEPORT (PROC, | |
29 | ({ | |
30 | __proc_getpids (port, &_hurd_pid, &_hurd_ppid, &_hurd_orphaned); | |
31 | __proc_getpgrp (port, _hurd_pid, &_hurd_pgrp); | |
32 | })); | |
28f540f4 RM |
33 | } |
34 | ||
ae49f218 | 35 | SET_RELHOOK (_hurd_proc_subinit, init_pids); |
28f540f4 RM |
36 | \f |
37 | #include <hurd/msg_server.h> | |
38 | #include "set-hooks.h" | |
28f540f4 RM |
39 | |
40 | DEFINE_HOOK (_hurd_pgrp_changed_hook, (pid_t)); | |
41 | ||
42 | /* These let user threads synchronize with an operation which changes ids. */ | |
43 | unsigned int _hurd_pids_changed_stamp; | |
28f540f4 RM |
44 | |
45 | kern_return_t | |
46 | _S_msg_proc_newids (mach_port_t me, | |
47 | task_t task, | |
48 | pid_t ppid, pid_t pgrp, int orphaned) | |
49 | { | |
f94a3574 RM |
50 | int pgrp_changed; |
51 | ||
28f540f4 RM |
52 | if (task != __mach_task_self ()) |
53 | return EPERM; | |
54 | ||
55 | __mach_port_deallocate (__mach_task_self (), task); | |
56 | ||
f94a3574 | 57 | pgrp_changed = pgrp != _hurd_pgrp; |
28f540f4 RM |
58 | _hurd_ppid = ppid; |
59 | _hurd_pgrp = pgrp; | |
60 | _hurd_orphaned = orphaned; | |
61 | ||
f94a3574 RM |
62 | if (pgrp_changed) |
63 | /* Run things that want notification of a pgrp change. */ | |
64 | RUN_HOOK (_hurd_pgrp_changed_hook, (pgrp)); | |
28f540f4 RM |
65 | |
66 | /* Notify any waiting user threads that the id change as been completed. */ | |
67 | ++_hurd_pids_changed_stamp; | |
bec41242 | 68 | lll_wake (_hurd_pids_changed_stamp, GSYNC_BROADCAST); |
28f540f4 RM |
69 | |
70 | return 0; | |
71 | } |