#include <linux/namei.h>
#include <linux/miscdevice.h>
#include <linux/version.h>
+#include <linux/magic.h>
#include "compat.h"
#include "ctree.h"
#include "disk-io.h"
#include "export.h"
#include "compression.h"
-#define BTRFS_SUPER_MAGIC 0x9123683E
static struct super_operations btrfs_super_ops;
{
struct btrfs_ioctl_vol_args *vol;
struct btrfs_fs_devices *fs_devices;
- int ret = 0;
+ int ret = -ENOTTY;
int len;
if (!capable(CAP_SYS_ADMIN))
goto out;
}
len = strnlen(vol->name, BTRFS_PATH_NAME_MAX);
+
switch (cmd) {
case BTRFS_IOC_SCAN_DEV:
ret = btrfs_scan_one_device(vol->name, FMODE_READ,