FreeBSD/Linux Kernel Cross Reference
sys/sys/tape.h
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
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