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581c785bf3
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
89 lines
2.7 KiB
C
89 lines
2.7 KiB
C
/* 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 <errno.h>
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#include <hurd.h>
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#include <hurd/signal.h>
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#include <hurd/msg.h>
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#include <sysdep-cancel.h>
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/* Change the set of blocked signals to SET,
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wait until a signal arrives, and restore the set of blocked signals. */
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int
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__sigsuspend (const sigset_t *set)
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{
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struct hurd_sigstate *ss;
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sigset_t newmask, oldmask, pending;
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mach_port_t wait;
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mach_msg_header_t msg;
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int cancel_oldtype;
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if (set != NULL)
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/* Crash before locking. */
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newmask = *set;
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/* Get a fresh port we will wait on. */
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wait = __mach_reply_port ();
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ss = _hurd_self_sigstate ();
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_hurd_sigstate_lock (ss);
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oldmask = ss->blocked;
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if (set != NULL)
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/* Change to the new blocked signal mask. */
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ss->blocked = newmask & ~_SIG_CANT_MASK;
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/* Notice if any pending signals just became unblocked. */
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pending = _hurd_sigstate_pending (ss) & ~ss->blocked;
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/* Tell the signal thread to message us when a signal arrives. */
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ss->suspended = wait;
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_hurd_sigstate_unlock (ss);
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if (pending)
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/* Tell the signal thread to check for pending signals. */
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__msg_sig_post (_hurd_msgport, 0, 0, __mach_task_self ());
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/* Wait for the signal thread's message. */
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cancel_oldtype = LIBC_CANCEL_ASYNC();
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__mach_msg (&msg, MACH_RCV_MSG, 0, sizeof (msg), wait,
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MACH_MSG_TIMEOUT_NONE, MACH_PORT_NULL);
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LIBC_CANCEL_RESET (cancel_oldtype);
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__mach_port_destroy (__mach_task_self (), wait);
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/* Restore the old mask and check for pending signals again. */
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_hurd_sigstate_lock (ss);
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ss->blocked = oldmask;
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pending = _hurd_sigstate_pending(ss) & ~ss->blocked;
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_hurd_sigstate_unlock (ss);
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if (pending)
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/* Tell the signal thread to check for pending signals. */
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__msg_sig_post (_hurd_msgport, 0, 0, __mach_task_self ());
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/* We've been interrupted! And a good thing, too.
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Otherwise we'd never return.
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That's right; this function always returns an error. */
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errno = EINTR;
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return -1;
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}
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libc_hidden_def (__sigsuspend)
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weak_alias (__sigsuspend, sigsuspend)
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