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Add header containing structure definitions for tape instrumentation

This commit is contained in:
blymn 2005-08-07 12:19:06 +00:00
parent c91d1d213a
commit 7279c2034d
1 changed files with 81 additions and 0 deletions
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/* $NetBSD: tape.h,v 1.1 2005/08/07 12:19:06 blymn Exp $ */
/*-
* Copyright (c) 2005 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Brett Lymn
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _SYS_TAPE_H_
#define _SYS_TAPE_H_
#include <sys/queue.h>
#define TAPENAMELEN 16
/* The following structure is 64-bit alignment safe */
struct tape_sysctl {
char name[TAPENAMELEN];
int32_t busy;
int32_t pad;
u_int64_t xfer;
u_int64_t bytes;
u_int32_t attachtime_sec;
u_int32_t attachtime_usec;
u_int32_t timestamp_sec;
u_int32_t timestamp_usec;
u_int32_t time_sec;
u_int32_t time_usec;
u_int64_t rxfer;
u_int64_t rbytes;
u_int64_t wxfer;
u_int64_t wbytes;
};
/*
* Statistics for the tape device - in a separate structure so userland can
* see them.
*/
struct tape {
char *name; /* name of drive */
int busy; /* drive is busy */
u_int64_t rxfer; /* total number of read transfers */
u_int64_t wxfer; /* total number of write transfers */
u_int64_t rbytes; /* total bytes read */
u_int64_t wbytes; /* total bytes written */
struct timeval attachtime; /* time tape was attached */
struct timeval timestamp; /* timestamp of last unbusy */
struct timeval time; /* total time spent busy */
TAILQ_ENTRY(tape) link;
};
/* Head of the tape stats list, define here so userland can get at it */
TAILQ_HEAD(tapelist_head, tape); /* the tapelist is a TAILQ */
#endif