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c5f65462a2
This patch fixes further coding style issues where code should have broken lines before operators in accordance with the GNU Coding Standards but instead was breaking lines after them. Tested for x86_64, and with build-many-glibcs.py. * stdio-common/vfscanf-internal.c (ARG): Break lines before rather than after operators. * sysdeps/mach/hurd/setitimer.c (timer_thread): Likewise. (setitimer_locked): Likewise. * sysdeps/mach/hurd/sigaction.c (__sigaction): Likewise. * sysdeps/mach/hurd/sigaltstack.c (__sigaltstack): Likewise. * sysdeps/mach/pagecopy.h (PAGE_COPY_FWD): Likewise. * sysdeps/mach/thread_state.h (machine_get_basic_state): Likewise. * sysdeps/powerpc/powerpc64/tst-ucontext-ppc64-vscr.c (PPC_CPU_SUPPORTED): Likewise. * sysdeps/unix/sysv/linux/alpha/a.out.h (N_TXTOFF): Likewise. * sysdeps/unix/sysv/linux/generic/wordsize-32/overflow.h (stat_overflow): Likewise. (statfs_overflow): Likewise. * sysdeps/unix/sysv/linux/tst-personality.c (do_test): Likewise. * sysdeps/unix/sysv/linux/tst-ttyname.c (eq_ttyname): Likewise. (eq_ttyname_r): Likewise. (run_chroot_tests): Likewise.
63 lines
1.7 KiB
C
63 lines
1.7 KiB
C
/* Copyright (C) 1992-2019 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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<http://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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/* Run signals handlers on the stack specified by SS (if not NULL).
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If OSS is not NULL, it is filled in with the old signal stack status. */
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int
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__sigaltstack (const stack_t *argss, stack_t *oss)
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{
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struct hurd_sigstate *s;
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stack_t ss, old;
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/* Fault before taking any locks. */
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if (argss != NULL)
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ss = *argss;
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if (oss != NULL)
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*(volatile stack_t *) oss = *oss;
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s = _hurd_self_sigstate ();
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__spin_lock (&s->lock);
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if (argss != NULL
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&& (ss.ss_flags & SS_DISABLE)
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&& (s->sigaltstack.ss_flags & SS_ONSTACK))
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{
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/* Can't disable a stack that is in use. */
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__spin_unlock (&s->lock);
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errno = EINVAL;
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return -1;
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}
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old = s->sigaltstack;
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if (argss != NULL)
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s->sigaltstack = ss;
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__spin_unlock (&s->lock);
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if (oss != NULL)
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*oss = old;
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return 0;
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}
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libc_hidden_def (__sigaltstack)
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weak_alias (__sigaltstack, sigaltstack)
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