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// SPDX-License-Identifier: GPL-2.0
/*
* 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) 2002, 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.
*
* lustre/llite/acl.c
*/
#define DEBUG_SUBSYSTEM S_LLITE
#include "llite_internal.h"
struct posix_acl *ll_get_acl(struct inode *inode, int type)
{
struct ll_inode_info *lli = ll_i2info(inode);
struct posix_acl *acl = NULL;
spin_lock(&lli->lli_lock);
/* VFS' acl_permission_check->check_acl will release the refcount */
acl = posix_acl_dup(lli->lli_posix_acl);
spin_unlock(&lli->lli_lock);
return acl;
}
int ll_set_acl(struct inode *inode, struct posix_acl *acl, int type)
{
struct ll_sb_info *sbi = ll_i2sbi(inode);
struct ptlrpc_request *req = NULL;
const char *name = NULL;
size_t value_size = 0;
char *value = NULL;
int rc = 0;
switch (type) {
case ACL_TYPE_ACCESS:
name = XATTR_NAME_POSIX_ACL_ACCESS;
if (acl)
rc = posix_acl_update_mode(inode, &inode->i_mode, &acl);
break;
case ACL_TYPE_DEFAULT:
name = XATTR_NAME_POSIX_ACL_DEFAULT;
if (!S_ISDIR(inode->i_mode))
rc = acl ? -EACCES : 0;
break;
default:
rc = -EINVAL;
break;
}
if (rc)
return rc;
if (acl) {
value_size = posix_acl_xattr_size(acl->a_count);
value = kmalloc(value_size, GFP_NOFS);
if (!value) {
rc = -ENOMEM;
goto out;
}
rc = posix_acl_to_xattr(&init_user_ns, acl, value, value_size);
if (rc < 0)
goto out_value;
}
rc = md_setxattr(sbi->ll_md_exp, ll_inode2fid(inode),
value ? OBD_MD_FLXATTR : OBD_MD_FLXATTRRM,
name, value, value_size, 0, 0, &req);
ptlrpc_req_finished(req);
out_value:
kfree(value);
out:
if (rc)
forget_cached_acl(inode, type);
else
set_cached_acl(inode, type, acl);
return rc;
}
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