glibc/hurd/hurdpid.c
Paul Eggert 581c785bf3 Update copyright dates with scripts/update-copyrights
I used these shell commands:

../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright
(cd ../glibc && git commit -am"[this commit message]")

and then ignored the output, which consisted lines saying "FOO: warning:
copyright statement not found" for each of 7061 files FOO.

I then removed trailing white space from math/tgmath.h,
support/tst-support-open-dev-null-range.c, and
sysdeps/x86_64/multiarch/strlen-vec.S, to work around the following
obscure pre-commit check failure diagnostics from Savannah.  I don't
know why I run into these diagnostics whereas others evidently do not.

remote: *** 912-#endif
remote: *** 913:
remote: *** 914-
remote: *** error: lines with trailing whitespace found
...
remote: *** error: sysdeps/unix/sysv/linux/statx_cp.c: trailing lines
2022-01-01 11:40:24 -08:00

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