Btrfs: introduce BTRFS_IOC_SEND for btrfs send/receive

This patch introduces the BTRFS_IOC_SEND ioctl that is
required for send. It allows btrfs-progs to implement
full and incremental sends. Patches for btrfs-progs will
follow.

Signed-off-by: Alexander Block <ablock84@googlemail.com>
Reviewed-by: David Sterba <dave@jikos.cz>
Reviewed-by: Arne Jansen <sensille@gmx.net>
Reviewed-by: Jan Schmidt <list.btrfs@jan-o-sch.net>
Reviewed-by: Alex Lyakas <alex.bolshoy.btrfs@gmail.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index 99fe2ce7f721..bca6997fdb80 100644
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -54,6 +54,7 @@
 #include "inode-map.h"
 #include "backref.h"
 #include "rcu-string.h"
+#include "send.h"
 
 /* Mask out flags that are inappropriate for the given type of inode. */
 static inline __u32 btrfs_mask_flags(umode_t mode, __u32 flags)
@@ -3571,6 +3572,8 @@ long btrfs_ioctl(struct file *file, unsigned int
                 return btrfs_ioctl_balance_progress(root, argp);
         case BTRFS_IOC_SET_RECEIVED_SUBVOL:
                 return btrfs_ioctl_set_received_subvol(file, argp);
+        case BTRFS_IOC_SEND:
+                return btrfs_ioctl_send(file, argp);
         case BTRFS_IOC_GET_DEV_STATS:
                 return btrfs_ioctl_get_dev_stats(root, argp, 0);
         case BTRFS_IOC_GET_AND_RESET_DEV_STATS: