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ae49f218da
hurd initialization stages use RUN_HOOK to run various initialization functions. That is however using absolute addresses which need to be relocated, which is done later by csu. We can however easily make the linker compute relative addresses which thus don't need a relocation. The new SET_RELHOOK and RUN_RELHOOK macros implement this.
72 lines
2.0 KiB
C
72 lines
2.0 KiB
C
/* Copyright (C) 1991-2021 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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