sys/geom/nop/g_nop.h

   1 /*-
   2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
   3  *
   4  * Copyright (c) 2004-2006 Pawel Jakub Dawidek <pjd@FreeBSD.org>
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
  17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
  20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  26  * SUCH DAMAGE.
  27  *
  28  * $FreeBSD$
  29  */
  30
  31 #ifndef _G_NOP_H_
  32 #define _G_NOP_H_
  33
  34 #define G_NOP_CLASS_NAME        "NOP"
  35 #define G_NOP_VERSION           4
  36 #define G_NOP_SUFFIX            ".nop"
  37 /*
  38  * Special flag to instruct gnop to passthrough the underlying provider's
  39  * physical path
  40  */
  41 #define G_NOP_PHYSPATH_PASSTHROUGH "\255"
  42
  43 #ifdef _KERNEL
  44 #define G_NOP_DEBUG(lvl, ...)   do {                                    \
  45         if (g_nop_debug >= (lvl)) {                                     \
  46                 printf("GEOM_NOP");                                     \
  47                 if (g_nop_debug > 0)                                    \
  48                         printf("[%u]", lvl);                            \
  49                 printf(": ");                                           \
  50                 printf(__VA_ARGS__);                                    \
  51                 printf("\n");                                           \
  52         }                                                               \
  53 } while (0)
  54 #define G_NOP_LOGREQ(bp, ...)   G_NOP_LOGREQLVL(2, bp, __VA_ARGS__)
  55 #define G_NOP_LOGREQLVL(lvl, bp, ...) do {                              \
  56         if (g_nop_debug >= (lvl)) {                                     \
  57                 printf("GEOM_NOP[%d]: ", (lvl));                        \
  58                 printf(__VA_ARGS__);                                    \
  59                 printf(" ");                                            \
  60                 g_print_bio(bp);                                        \
  61                 printf("\n");                                           \
  62         }                                                               \
  63 } while (0)
  64
  65 struct g_nop_softc {
  66         int             sc_error;
  67         off_t           sc_offset;
  68         off_t           sc_explicitsize;
  69         off_t           sc_stripesize;
  70         off_t           sc_stripeoffset;
  71         u_int           sc_rfailprob;
  72         u_int           sc_wfailprob;
  73         uintmax_t       sc_reads;
  74         uintmax_t       sc_writes;
  75         uintmax_t       sc_deletes;
  76         uintmax_t       sc_getattrs;
  77         uintmax_t       sc_flushes;
  78         uintmax_t       sc_cmd0s;
  79         uintmax_t       sc_cmd1s;
  80         uintmax_t       sc_cmd2s;
  81         uintmax_t       sc_readbytes;
  82         uintmax_t       sc_wrotebytes;
  83         char*           sc_physpath;
  84         struct mtx      sc_lock;
  85 };
  86 #endif  /* _KERNEL */
  87
  88 #endif  /* _G_NOP_H_ */