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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, 2015, 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 <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);
}
}
EXPORT_SYMBOL(cfs_cap_raise);
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);
}
}
EXPORT_SYMBOL(cfs_cap_lower);
int cfs_cap_raised(cfs_cap_t cap)
{
return cap_raised(current_cap(), cap);
}
EXPORT_SYMBOL(cfs_cap_raised);
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_curproc_cap_pack);
/*
* Local variables:
* c-indentation-style: "K&R"
* c-basic-offset: 8
* tab-width: 8
* fill-column: 80
* scroll-step: 1
* End:
*/
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