1 /* $NetBSD: tape.h,v 1.3 2005/12/26 18:41:36 perry 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 37 #define TAPENAMELEN 16 38 39 /* The following structure is 64-bit alignment safe */ 40 struct tape_sysctl { 41 char name[TAPENAMELEN]; 42 int32_t busy; 43 int32_t pad; 44 uint64_t xfer; 45 uint64_t bytes; 46 uint32_t attachtime_sec; 47 uint32_t attachtime_usec; 48 uint32_t timestamp_sec; 49 uint32_t timestamp_usec; 50 uint32_t time_sec; 51 uint32_t time_usec; 52 uint64_t rxfer; 53 uint64_t rbytes; 54 uint64_t wxfer; 55 uint64_t wbytes; 56 }; 57 58 /* 59 * Statistics for the tape device - in a separate structure so userland can 60 * see them. 61 */ 62 63 struct tape { 64 char *name; /* name of drive */ 65 int busy; /* drive is busy */ 66 uint64_t rxfer; /* total number of read transfers */ 67 uint64_t wxfer; /* total number of write transfers */ 68 uint64_t rbytes; /* total bytes read */ 69 uint64_t wbytes; /* total bytes written */ 70 struct timeval attachtime; /* time tape was attached */ 71 struct timeval timestamp; /* timestamp of last unbusy */ 72 struct timeval time; /* total time spent busy */ 73 74 TAILQ_ENTRY(tape) link; 75 }; 76 77 /* Head of the tape stats list, define here so userland can get at it */ 78 TAILQ_HEAD(tapelist_head, tape); /* the tapelist is a TAILQ */ 79 80 #endif 81 82