72 lines
2.0 KiB
C
72 lines
2.0 KiB
C
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/* Copyright (C) 1991-2022 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <hurd.h>
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#include <lowlevellock.h>
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#include "set-hooks.h"
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pid_t _hurd_pid, _hurd_ppid, _hurd_pgrp;
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int _hurd_orphaned;
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static void attribute_used_retain
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init_pids (void)
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{
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__USEPORT (PROC,
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({
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__proc_getpids (port, &_hurd_pid, &_hurd_ppid, &_hurd_orphaned);
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__proc_getpgrp (port, _hurd_pid, &_hurd_pgrp);
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}));
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}
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SET_RELHOOK (_hurd_proc_subinit, init_pids);
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#include <hurd/msg_server.h>
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#include "set-hooks.h"
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DEFINE_HOOK (_hurd_pgrp_changed_hook, (pid_t));
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/* These let user threads synchronize with an operation which changes ids. */
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unsigned int _hurd_pids_changed_stamp;
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kern_return_t
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_S_msg_proc_newids (mach_port_t me,
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task_t task,
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pid_t ppid, pid_t pgrp, int orphaned)
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{
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int pgrp_changed;
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if (task != __mach_task_self ())
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return EPERM;
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__mach_port_deallocate (__mach_task_self (), task);
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pgrp_changed = pgrp != _hurd_pgrp;
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_hurd_ppid = ppid;
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_hurd_pgrp = pgrp;
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_hurd_orphaned = orphaned;
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if (pgrp_changed)
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/* Run things that want notification of a pgrp change. */
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RUN_HOOK (_hurd_pgrp_changed_hook, (pgrp));
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/* Notify any waiting user threads that the id change as been completed. */
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++_hurd_pids_changed_stamp;
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lll_wake (_hurd_pids_changed_stamp, GSYNC_BROADCAST);
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return 0;
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}
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