| /* |
| * 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.sun.com/software/products/lustre/docs/GPLv2.pdf |
| * |
| * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| * CA 95054 USA or visit www.sun.com if you need additional information or |
| * have any questions. |
| * |
| * 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.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); |