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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.
92 lines
2.9 KiB
C
92 lines
2.9 KiB
C
/* Copyright (C) 1991-2019 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 <signal.h>
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#include <hurd.h>
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#include <hurd/signal.h>
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/* If ACT is not NULL, change the action for SIG to *ACT.
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If OACT is not NULL, put the old action for SIG in *OACT. */
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int
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__sigaction (int sig, const struct sigaction *act, struct sigaction *oact)
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{
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struct hurd_sigstate *ss;
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struct sigaction a, old;
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sigset_t pending;
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if (sig <= 0 || sig >= NSIG
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|| (act != NULL && act->sa_handler != SIG_DFL
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&& ((__sigmask (sig) & _SIG_CANT_MASK)
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|| act->sa_handler == SIG_ERR)))
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{
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errno = EINVAL;
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return -1;
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}
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/* Copy so we fault before taking locks. */
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if (act != NULL)
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a = *act;
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ss = _hurd_self_sigstate ();
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__spin_lock (&ss->critical_section_lock);
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__spin_lock (&ss->lock);
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old = ss->actions[sig];
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if (act != NULL)
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ss->actions[sig] = a;
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if (act != NULL && sig == SIGCHLD
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&& (a.sa_flags & SA_NOCLDSTOP) != (old.sa_flags & SA_NOCLDSTOP))
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{
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__spin_unlock (&ss->lock);
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/* Inform the proc server whether or not it should send us SIGCHLD for
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stopped children. We do this in a critical section so that no
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SIGCHLD can arrive in the middle and be of indeterminate status. */
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__USEPORT (PROC,
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__proc_mod_stopchild (port, !(a.sa_flags & SA_NOCLDSTOP)));
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__spin_lock (&ss->lock);
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pending = ss->pending & ~ss->blocked;
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}
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else if (act != NULL && (a.sa_handler == SIG_IGN || a.sa_handler == SIG_DFL))
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/* We are changing to an action that might be to ignore SIG signals.
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If SIG is blocked and pending and the new action is to ignore it, we
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must remove it from the pending set now; if the action is changed
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back and then SIG is unblocked, the signal pending now should not
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arrive. So wake up the signal thread to check the new state and do
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the right thing. */
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pending = ss->pending & __sigmask (sig);
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else
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pending = 0;
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__spin_unlock (&ss->lock);
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__spin_unlock (&ss->critical_section_lock);
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if (pending)
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__msg_sig_post (_hurd_msgport, 0, 0, __mach_task_self ());
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if (oact != NULL)
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*oact = old;
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return 0;
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}
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libc_hidden_def (__sigaction)
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weak_alias (__sigaction, sigaction)
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