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      1 /*	$NetBSD: tape.h,v 1.4 2016/01/22 23:44:33 dholland Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2005 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Brett Lymn
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Neither the name of The NetBSD Foundation nor the names of its
     16  *    contributors may be used to endorse or promote products derived
     17  *    from this software without specific prior written permission.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #ifndef _SYS_TAPE_H_
     33 #define _SYS_TAPE_H_
     34 
     35 #include <sys/queue.h>
     36 #include <sys/time.h>
     37 
     38 #define	TAPENAMELEN	16
     39 
     40 /* The following structure is 64-bit alignment safe */
     41 struct tape_sysctl {
     42 	char		name[TAPENAMELEN];
     43 	int32_t		busy;
     44 	int32_t		pad;
     45 	uint64_t	xfer;
     46 	uint64_t	bytes;
     47 	uint32_t	attachtime_sec;
     48 	uint32_t	attachtime_usec;
     49 	uint32_t	timestamp_sec;
     50 	uint32_t	timestamp_usec;
     51 	uint32_t	time_sec;
     52 	uint32_t	time_usec;
     53 	uint64_t	rxfer;
     54 	uint64_t	rbytes;
     55 	uint64_t	wxfer;
     56 	uint64_t	wbytes;
     57 };
     58 
     59 /*
     60  * Statistics for the tape device - in a separate structure so userland can
     61  * see them.
     62  */
     63 
     64 struct tape {
     65 	char		*name; 		/* name of drive */
     66 	int		busy;		/* drive is busy */
     67 	uint64_t       rxfer;		/* total number of read transfers */
     68 	uint64_t       wxfer;		/* total number of write transfers */
     69 	uint64_t       rbytes;		/* total bytes read */
     70 	uint64_t       wbytes;		/* total bytes written */
     71 	struct timeval  attachtime;	/* time tape was attached */
     72 	struct timeval  timestamp;	/* timestamp of last unbusy */
     73 	struct timeval  time;		/* total time spent busy */
     74 
     75 	TAILQ_ENTRY(tape) link;
     76 };
     77 
     78 /* Head of the tape stats list, define here so userland can get at it */
     79 TAILQ_HEAD(tapelist_head, tape);	/* the tapelist is a TAILQ */
     80 
     81 #endif
     82 
     83