Added support for an additional ioctl.

Added BTRFS_IOC_SNAP_CREATE_V2 and struct btrfs_ioctl_vol_args_v2 as
defined in fs/btrfs/ioctl.h in the kernel sources.

Signed-off-by: Andreas Philipp <philipp.andreas@gmail.com>
Signed-off-by: Hugo Mills <hugo@carfax.org.uk>

diff --git a/ioctl.h b/ioctl.h
index bb7b9e0..5aa288b 100644 (file)
--- a/ioctl.h
+++ b/ioctl.h
@@ -30,6 +30,20 @@ struct btrfs_ioctl_vol_args {
        char name[BTRFS_PATH_NAME_MAX + 1];
 };
 
+#define BTRFS_SUBVOL_RDONLY            (1ULL << 1)
+#define BTRFS_SUBVOL_NAME_MAX 4039
+
+struct btrfs_ioctl_vol_args_v2 {
+       __s64 fd;
+       __u64 transid;
+       __u64 flags;
+       __u64 unused[4];
+       char name[BTRFS_SUBVOL_NAME_MAX + 1];
+};
+
+#define BTRFS_FSID_SIZE 16
+#define BTRFS_UUID_SIZE 16
+
 struct btrfs_ioctl_search_key {
        /* which root are we searching.  0 is the tree of tree roots */
        __u64 tree_id;
@@ -139,6 +153,7 @@ struct btrfs_ioctl_space_args {
        struct btrfs_ioctl_space_info spaces[0];
 };
 
+/* BTRFS_IOC_SNAP_CREATE is no longer used by the btrfs command */
 #define BTRFS_IOC_SNAP_CREATE _IOW(BTRFS_IOCTL_MAGIC, 1, \
                                   struct btrfs_ioctl_vol_args)
 #define BTRFS_IOC_DEFRAG _IOW(BTRFS_IOCTL_MAGIC, 2, \
@@ -176,4 +191,6 @@ struct btrfs_ioctl_space_args {
 #define BTRFS_IOC_DEFAULT_SUBVOL _IOW(BTRFS_IOCTL_MAGIC, 19, u64)
 #define BTRFS_IOC_SPACE_INFO _IOWR(BTRFS_IOCTL_MAGIC, 20, \
                                    struct btrfs_ioctl_space_args)
+#define BTRFS_IOC_SNAP_CREATE_V2 _IOW(BTRFS_IOCTL_MAGIC, 23, \
+                                  struct btrfs_ioctl_vol_args_v2)
 #endif