sys/geom/nop/g_nop.h

   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 };
  69 #endif  /* _KERNEL */
  70
  71 #endif  /* _G_NOP_H_ */