1 files changed, 12 insertions, 0 deletions

diff --git a/include/bb_e2fs_defs.h b/include/bb_e2fs_defs.h
index 3f5e3c45b..2d72288ed 100644
--- a/include/bb_e2fs_defs.h
+++ b/include/bb_e2fs_defs.h
@@ -195,6 +195,18 @@ struct ext2_dx_countlimit {
 #define EXT2_IOC_SETFLAGS               _IOW('f', 2, long)
 #define EXT2_IOC_GETVERSION             _IOR('v', 1, long)
 #define EXT2_IOC_SETVERSION             _IOW('v', 2, long)
+//NB: despite "long" in defs above, these ioctls use an _int_!
+//passing them a pointer to long will read/write only int-sized data!
+struct ext2_fsxattr {
+        uint32_t        fsx_xflags;     /* xflags field value (get/set) */
+        uint32_t        fsx_extsize;    /* extsize field value (get/set)*/
+        uint32_t        fsx_nextents;   /* nextents field value (get)   */
+        uint32_t        fsx_projid;     /* project identifier (get/set) */
+        uint32_t        fsx_cowextsize; /* CoW extsize field value (get/set)*/
+        unsigned char   fsx_pad[8];
+};
+#define EXT2_IOC_FSGETXATTR             _IOR('X', 31, struct ext2_fsxattr)
+#define EXT2_IOC_FSSETXATTR             _IOW('X', 32, struct ext2_fsxattr)
 
 /*
  * Structure of an inode on the disk