xnu-201.tar.gz

[apple/xnu.git] / bsd / dev / disk.h

diff --git a/bsd/dev/disk.h b/bsd/dev/disk.h
index ef8b7504e276d7a2518e6b2a3dbba932d2132ba6..6431ff276554604ae15c88aec23137b1b1de2f84 100644 (file)
--- a/bsd/dev/disk.h
+++ b/bsd/dev/disk.h
@@ -160,5 +160,10 @@ struct drive_location {
 #define DKIOCGETLOCATION    DKIOCGLOCATION      /* get media's location description */
 #define DKIOCISFORMATTED    DKIOCGFORMAT        /* is media formatted? */
 #define DKIOCISWRITABLE     _IOR('d', 29, int)  /* is media writable? */
-#endif /* _BSD_DEV_DISK_ */
 
+#define DKIOCGETMAXBLOCKCOUNTREAD    _IOR('d', 64, u_int64_t) /* get device's maximum block count for read requests */
+#define DKIOCGETMAXBLOCKCOUNTWRITE   _IOR('d', 65, u_int64_t) /* get device's maximum block count for write requests */
+#define DKIOCGETMAXSEGMENTCOUNTREAD  _IOR('d', 66, u_int64_t) /* get device's maximum physical segment count for read buffers */
+#define DKIOCGETMAXSEGMENTCOUNTWRITE _IOR('d', 67, u_int64_t) /* get device's maximum physical segment count for write buffers */
+
+#endif /* _BSD_DEV_DISK_ */