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/*
* GPL HEADER START
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 only,
* as published by the Free Software Foundation.
*
* This program 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
* General Public License version 2 for more details (a copy is included
* in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU General Public License
* version 2 along with this program; If not, see
* http://www.gnu.org/licenses/gpl-2.0.html
*
* GPL HEADER END
*/
/*
* Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*
* Copyright (c) 2011, 2012, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
* Lustre is a trademark of Sun Microsystems, Inc.
*/
#define DEBUG_SUBSYSTEM S_LNET
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/fs_struct.h>
#include <linux/sched/signal.h>
#include "../../../include/linux/libcfs/libcfs.h"
#if defined(CONFIG_KGDB)
#include <linux/kgdb.h>
#endif
sigset_t
cfs_block_allsigs(void)
{
unsigned long flags;
sigset_t old;
spin_lock_irqsave(¤t->sighand->siglock, flags);
old = current->blocked;
sigfillset(¤t->blocked);
recalc_sigpending();
spin_unlock_irqrestore(¤t->sighand->siglock, flags);
return old;
}
EXPORT_SYMBOL(cfs_block_allsigs);
sigset_t cfs_block_sigs(unsigned long sigs)
{
unsigned long flags;
sigset_t old;
spin_lock_irqsave(¤t->sighand->siglock, flags);
old = current->blocked;
sigaddsetmask(¤t->blocked, sigs);
recalc_sigpending();
spin_unlock_irqrestore(¤t->sighand->siglock, flags);
return old;
}
EXPORT_SYMBOL(cfs_block_sigs);
/* Block all signals except for the @sigs */
sigset_t cfs_block_sigsinv(unsigned long sigs)
{
unsigned long flags;
sigset_t old;
spin_lock_irqsave(¤t->sighand->siglock, flags);
old = current->blocked;
sigaddsetmask(¤t->blocked, ~sigs);
recalc_sigpending();
spin_unlock_irqrestore(¤t->sighand->siglock, flags);
return old;
}
EXPORT_SYMBOL(cfs_block_sigsinv);
void
cfs_restore_sigs(sigset_t old)
{
unsigned long flags;
spin_lock_irqsave(¤t->sighand->siglock, flags);
current->blocked = old;
recalc_sigpending();
spin_unlock_irqrestore(¤t->sighand->siglock, flags);
}
EXPORT_SYMBOL(cfs_restore_sigs);
void
cfs_clear_sigpending(void)
{
unsigned long flags;
spin_lock_irqsave(¤t->sighand->siglock, flags);
clear_tsk_thread_flag(current, TIF_SIGPENDING);
spin_unlock_irqrestore(¤t->sighand->siglock, flags);
}
EXPORT_SYMBOL(cfs_clear_sigpending);
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