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Add mtop command to enable/disable compression. Added 4 new ioctls to 

read logical or hardware block position and to space to logical or hardware
block position.
This commit is contained in:
mjacob 1997-09-29 19:25:26 +00:00
parent d4f354e245
commit 4549585b43
1 changed files with 12 additions and 1 deletions
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13
sys/sys/mtio.h
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@ -1,4 +1,4 @@
/* $NetBSD: mtio.h,v 1.14 1997/04/15 06:50:19 lukem Exp $ */
/* $NetBSD: mtio.h,v 1.15 1997/09/29 19:25:26 mjacob Exp $ */
/*
* Copyright (c) 1982, 1986, 1993
@ -65,6 +65,7 @@ struct mtop {
#define MTNOCACHE 13 /* disable controller cache */
#define MTSETBSIZ 14 /* set block size; 0 for variable */
#define MTSETDNSTY 15 /* set density code for current mode */
#define MTCMPRESS 16 /* set/clear device compression */
/* structure for MTIOCGET - mag tape get status command */
@ -119,6 +120,16 @@ struct mtget {
#define MTIOCGET _IOR('m', 2, struct mtget) /* get tape status */
#define MTIOCIEOT _IO('m', 3) /* ignore EOT error */
#define MTIOCEEOT _IO('m', 4) /* enable EOT error */
/*
* When more SCSI-3 SSC (streaming device) devices are out there
* that support the full 32 byte type 2 structure, we'll have to
* rethink these ioctls to support all the entities they haul into
* the picture (64 bit blocks, logical file record numbers, etc..).
*/
#define MTIOCRDSPOS _IOR('m', 5, u_int32_t) /* get logical blk addr */
#define MTIOCRDHPOS _IOR('m', 6, u_int32_t) /* get hardware blk addr */
#define MTIOCSLOCATE _IOW('m', 5, u_int32_t) /* seek to logical blk addr */
#define MTIOCHLOCATE _IOW('m', 6, u_int32_t) /* seek to hardware blk addr */
#ifdef _KERNEL
/*