forked from luck/tmp_suning_uos_patched
744f52f997
ACLs are stored but not used for permission checks (yet) Signed-off-by: Chris Mason <chris.mason@oracle.com>
100 lines
2.9 KiB
C
100 lines
2.9 KiB
C
/*
|
|
* Copyright (C) 2007 Red Hat. All rights reserved.
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public
|
|
* License v2 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 for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public
|
|
* License along with this program; if not, write to the
|
|
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
* Boston, MA 021110-1307, USA.
|
|
*/
|
|
|
|
#include <linux/fs.h>
|
|
#include <linux/string.h>
|
|
#include <linux/xattr.h>
|
|
#include <linux/posix_acl_xattr.h>
|
|
#include "ctree.h"
|
|
#include "xattr.h"
|
|
static int btrfs_xattr_set_acl(struct inode *inode, int type,
|
|
const void *value, size_t size)
|
|
{
|
|
int ret = 0;
|
|
struct posix_acl *acl;
|
|
|
|
if (!is_owner_or_cap(inode))
|
|
return -EPERM;
|
|
if (value) {
|
|
acl = posix_acl_from_xattr(value, size);
|
|
if (acl == NULL) {
|
|
value = NULL;
|
|
size = 0;
|
|
} else if (IS_ERR(acl)) {
|
|
ret = PTR_ERR(acl);
|
|
} else {
|
|
ret = posix_acl_valid(acl);
|
|
posix_acl_release(acl);
|
|
}
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
return btrfs_xattr_set(inode, type, "", value, size, 0);
|
|
}
|
|
|
|
static int btrfs_xattr_get_acl(struct inode *inode, int type,
|
|
void *value, size_t size)
|
|
{
|
|
return btrfs_xattr_get(inode, type, "", value, size);
|
|
}
|
|
static int btrfs_xattr_acl_access_get(struct inode *inode, const char *name,
|
|
void *value, size_t size)
|
|
{
|
|
if (*name != '\0')
|
|
return -EINVAL;
|
|
return btrfs_xattr_get_acl(inode, BTRFS_XATTR_INDEX_POSIX_ACL_ACCESS,
|
|
value, size);
|
|
}
|
|
static int btrfs_xattr_acl_access_set(struct inode *inode, const char *name,
|
|
const void *value, size_t size, int flags)
|
|
{
|
|
if (*name != '\0')
|
|
return -EINVAL;
|
|
return btrfs_xattr_set_acl(inode, BTRFS_XATTR_INDEX_POSIX_ACL_ACCESS,
|
|
value, size);
|
|
}
|
|
static int btrfs_xattr_acl_default_get(struct inode *inode, const char *name,
|
|
void *value, size_t size)
|
|
{
|
|
if (*name != '\0')
|
|
return -EINVAL;
|
|
return btrfs_xattr_get_acl(inode, BTRFS_XATTR_INDEX_POSIX_ACL_DEFAULT,
|
|
value, size);
|
|
}
|
|
static int btrfs_xattr_acl_default_set(struct inode *inode, const char *name,
|
|
const void *value, size_t size, int flags)
|
|
{
|
|
if (*name != '\0')
|
|
return -EINVAL;
|
|
return btrfs_xattr_set_acl(inode, BTRFS_XATTR_INDEX_POSIX_ACL_DEFAULT,
|
|
value, size);
|
|
}
|
|
struct xattr_handler btrfs_xattr_acl_default_handler = {
|
|
.prefix = POSIX_ACL_XATTR_DEFAULT,
|
|
.list = btrfs_xattr_generic_list,
|
|
.get = btrfs_xattr_acl_default_get,
|
|
.set = btrfs_xattr_acl_default_set,
|
|
};
|
|
|
|
struct xattr_handler btrfs_xattr_acl_access_handler = {
|
|
.prefix = POSIX_ACL_XATTR_ACCESS,
|
|
.list = btrfs_xattr_generic_list,
|
|
.get = btrfs_xattr_acl_access_get,
|
|
.set = btrfs_xattr_acl_access_set,
|
|
};
|