btrfs-progs: make libbtrfs usable from C++

Please find attached a patch to make the new libbtrfs usable from
C++ (at least for the parts snapper will likely need).

Signed-off-by: Arvin Schnell <aschnell@suse.de>
Signed-off-by: Mark Fasheh <mfasheh@suse.de>

1 files changed, 8 insertions, 0 deletions

diff --git a/ioctl.h b/ioctl.h
index 8c32a2a2..3e7e451d 100644
--- a/ioctl.h
+++ b/ioctl.h
@@ -22,6 +22,10 @@
 #include <linux/ioctl.h>
 #include <time.h>
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #define BTRFS_IOCTL_MAGIC 0x94
 #define BTRFS_VOL_NAME_MAX 255
 
@@ -521,4 +525,8 @@ struct btrfs_ioctl_clone_range_args {
 #define BTRFS_IOC_DEV_REPLACE _IOWR(BTRFS_IOCTL_MAGIC, 53, \
 				    struct btrfs_ioctl_dev_replace_args)
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif