| /* |
| * 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. |
| * |
| * libcfs/libcfs/linux/linux-curproc.c |
| * |
| * Lustre curproc API implementation for Linux kernel |
| * |
| * Author: Nikita Danilov <nikita@clusterfs.com> |
| */ |
| |
| #include <linux/sched.h> |
| #include <linux/fs_struct.h> |
| |
| #include <linux/compat.h> |
| #include <linux/thread_info.h> |
| |
| #define DEBUG_SUBSYSTEM S_LNET |
| |
| #include "../../../include/linux/libcfs/libcfs.h" |
| |
| /* |
| * Implementation of cfs_curproc API (see portals/include/libcfs/curproc.h) |
| * for Linux kernel. |
| */ |
| |
| void cfs_cap_raise(cfs_cap_t cap) |
| { |
| struct cred *cred; |
| |
| cred = prepare_creds(); |
| if (cred) { |
| cap_raise(cred->cap_effective, cap); |
| commit_creds(cred); |
| } |
| } |
| |
| void cfs_cap_lower(cfs_cap_t cap) |
| { |
| struct cred *cred; |
| |
| cred = prepare_creds(); |
| if (cred) { |
| cap_lower(cred->cap_effective, cap); |
| commit_creds(cred); |
| } |
| } |
| |
| int cfs_cap_raised(cfs_cap_t cap) |
| { |
| return cap_raised(current_cap(), cap); |
| } |
| |
| static void cfs_kernel_cap_pack(kernel_cap_t kcap, cfs_cap_t *cap) |
| { |
| /* XXX lost high byte */ |
| *cap = kcap.cap[0]; |
| } |
| |
| cfs_cap_t cfs_curproc_cap_pack(void) |
| { |
| cfs_cap_t cap; |
| cfs_kernel_cap_pack(current_cap(), &cap); |
| return cap; |
| } |
| |
| EXPORT_SYMBOL(cfs_cap_raise); |
| EXPORT_SYMBOL(cfs_cap_lower); |
| EXPORT_SYMBOL(cfs_cap_raised); |
| EXPORT_SYMBOL(cfs_curproc_cap_pack); |
| |
| /* |
| * Local variables: |
| * c-indentation-style: "K&R" |
| * c-basic-offset: 8 |
| * tab-width: 8 |
| * fill-column: 80 |
| * scroll-step: 1 |
| * End: |
| */ |
