xref: /freebsd/sys/geom/nop/g_nop.h (revision e1a528369708afb723290916ad8ea9c79399e933)
1 /*-
2  * Copyright (c) 2004-2006 Pawel Jakub Dawidek <pjd@FreeBSD.org>
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  *
14  * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24  * SUCH DAMAGE.
25  *
26  * $FreeBSD$
27  */
28 
29 #ifndef	_G_NOP_H_
30 #define	_G_NOP_H_
31 
32 #define	G_NOP_CLASS_NAME	"NOP"
33 #define	G_NOP_VERSION		4
34 #define	G_NOP_SUFFIX		".nop"
35 
36 #ifdef _KERNEL
37 #define	G_NOP_DEBUG(lvl, ...)	do {					\
38 	if (g_nop_debug >= (lvl)) {					\
39 		printf("GEOM_NOP");					\
40 		if (g_nop_debug > 0)					\
41 			printf("[%u]", lvl);				\
42 		printf(": ");						\
43 		printf(__VA_ARGS__);					\
44 		printf("\n");						\
45 	}								\
46 } while (0)
47 #define	G_NOP_LOGREQ(bp, ...)	G_NOP_LOGREQLVL(2, bp, __VA_ARGS__)
48 #define G_NOP_LOGREQLVL(lvl, bp, ...) do {				\
49 	if (g_nop_debug >= (lvl)) {					\
50 		printf("GEOM_NOP[%d]: ", (lvl));			\
51 		printf(__VA_ARGS__);					\
52 		printf(" ");						\
53 		g_print_bio(bp);					\
54 		printf("\n");						\
55 	}								\
56 } while (0)
57 
58 struct g_nop_softc {
59 	int		sc_error;
60 	off_t		sc_offset;
61 	off_t		sc_explicitsize;
62 	u_int		sc_rfailprob;
63 	u_int		sc_wfailprob;
64 	uintmax_t	sc_reads;
65 	uintmax_t	sc_writes;
66 	uintmax_t	sc_readbytes;
67 	uintmax_t	sc_wrotebytes;
68 	struct mtx	sc_lock;
69 };
70 #endif	/* _KERNEL */
71 
72 #endif	/* _G_NOP_H_ */
73