linux-imx

// SPDX-License-Identifier: GPL-2.0

/*

 * Copyright (C) 2007 Red Hat.  All rights reserved.

 */

​

#include <linux/fs.h>

#include <linux/string.h>

#include <linux/xattr.h>

#include <linux/posix_acl_xattr.h>

#include <linux/posix_acl.h>

#include <linux/sched.h>

#include <linux/sched/mm.h>

#include <linux/slab.h>

​

#include "ctree.h"

#include "btrfs_inode.h"

#include "xattr.h"

​

struct posix_acl *btrfs_get_acl(struct inode *inode, int type)

{

    int size;

    const char *name;

    char *value = NULL;

    struct posix_acl *acl;

​

    switch (type) {

    case ACL_TYPE_ACCESS:

        name = XATTR_NAME_POSIX_ACL_ACCESS;

        break;

    case ACL_TYPE_DEFAULT:

        name = XATTR_NAME_POSIX_ACL_DEFAULT;

        break;

    default:

        return ERR_PTR(-EINVAL);

    }

​

    size = btrfs_getxattr(inode, name, NULL, 0);

    if (size > 0) {

        value = kzalloc(size, GFP_KERNEL);

        if (!value)

            return ERR_PTR(-ENOMEM);

        size = btrfs_getxattr(inode, name, value, size);

    }

    if (size > 0)

        acl = posix_acl_from_xattr(&init_user_ns, value, size);

    else if (size == -ENODATA || size == 0)

        acl = NULL;

    else

        acl = ERR_PTR(size);

    kfree(value);

​

    return acl;

}

​

static int __btrfs_set_acl(struct btrfs_trans_handle *trans,

             struct inode *inode, struct posix_acl *acl, int type)

{

    int ret, size = 0;

    const char *name;

    char *value = NULL;

​

    switch (type) {

    case ACL_TYPE_ACCESS: