linux_dsm_epyc7002/fs/btrfs/tests/btrfs-tests.c

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/*
* Copyright (C) 2013 Fusion IO. 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/mount.h>
#include <linux/magic.h>
#include "btrfs-tests.h"
#include "../ctree.h"
static struct vfsmount *test_mnt = NULL;
static struct dentry *btrfs_test_mount(struct file_system_type *fs_type,
int flags, const char *dev_name,
void *data)
{
return mount_pseudo(fs_type, "btrfs_test:", NULL, NULL, BTRFS_TEST_MAGIC);
}
static struct file_system_type test_type = {
.name = "btrfs_test_fs",
.mount = btrfs_test_mount,
.kill_sb = kill_anon_super,
};
struct inode *btrfs_new_test_inode(void)
{
return new_inode(test_mnt->mnt_sb);
}
int btrfs_init_test_fs(void)
{
int ret;
ret = register_filesystem(&test_type);
if (ret) {
printk(KERN_ERR "btrfs: cannot register test file system\n");
return ret;
}
test_mnt = kern_mount(&test_type);
if (IS_ERR(test_mnt)) {
printk(KERN_ERR "btrfs: cannot mount test file system\n");
unregister_filesystem(&test_type);
return ret;
}
return 0;
}
void btrfs_destroy_test_fs(void)
{
kern_unmount(test_mnt);
unregister_filesystem(&test_type);
}