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Diffstat (limited to 'fs')
-rw-r--r--fs/btrfs/ioctl.h14
-rw-r--r--fs/btrfs/super.c3
2 files changed, 10 insertions, 7 deletions
diff --git a/fs/btrfs/ioctl.h b/fs/btrfs/ioctl.h
index 78049ea208d..b320b103fa1 100644
--- a/fs/btrfs/ioctl.h
+++ b/fs/btrfs/ioctl.h
@@ -22,13 +22,20 @@
#define BTRFS_IOCTL_MAGIC 0x94
#define BTRFS_VOL_NAME_MAX 255
-#define BTRFS_PATH_NAME_MAX 3072
+#define BTRFS_PATH_NAME_MAX 4087
+/* this should be 4k */
struct btrfs_ioctl_vol_args {
__s64 fd;
char name[BTRFS_PATH_NAME_MAX + 1];
};
+struct btrfs_ioctl_clone_range_args {
+ __s64 src_fd;
+ __u64 src_offset, src_length;
+ __u64 dest_offset;
+};
+
#define BTRFS_IOC_SNAP_CREATE _IOW(BTRFS_IOCTL_MAGIC, 1, \
struct btrfs_ioctl_vol_args)
#define BTRFS_IOC_DEFRAG _IOW(BTRFS_IOCTL_MAGIC, 2, \
@@ -52,11 +59,6 @@ struct btrfs_ioctl_vol_args {
struct btrfs_ioctl_vol_args)
#define BTRFS_IOC_BALANCE _IOW(BTRFS_IOCTL_MAGIC, 12, \
struct btrfs_ioctl_vol_args)
-struct btrfs_ioctl_clone_range_args {
- __s64 src_fd;
- __u64 src_offset, src_length;
- __u64 dest_offset;
-};
#define BTRFS_IOC_CLONE_RANGE _IOW(BTRFS_IOCTL_MAGIC, 13, \
struct btrfs_ioctl_clone_range_args)
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index b4c101d9322..92c9b543def 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -582,7 +582,7 @@ static long btrfs_control_ioctl(struct file *file, unsigned int cmd,
{
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))
@@ -594,6 +594,7 @@ static long btrfs_control_ioctl(struct file *file, unsigned int cmd,
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,