g_nop.h

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    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, ...) \
   45     _GEOM_DEBUG("GEOM_NOP", g_nop_debug, (lvl), NULL, __VA_ARGS__)
   46 #define G_NOP_LOGREQLVL(lvl, bp, ...) \
   47     _GEOM_DEBUG("GEOM_NOP", g_nop_debug, (lvl), (bp), __VA_ARGS__)
   48 #define G_NOP_LOGREQ(bp, ...)   G_NOP_LOGREQLVL(2, bp, __VA_ARGS__)
   49 
   50 struct g_nop_delay;
   51 
   52 TAILQ_HEAD(g_nop_delay_head, g_nop_delay);
   53 
   54 struct g_nop_softc {
   55         int                      sc_error;
   56         off_t                    sc_offset;
   57         off_t                    sc_explicitsize;
   58         off_t                    sc_stripesize;
   59         off_t                    sc_stripeoffset;
   60         u_int                    sc_rfailprob;
   61         u_int                    sc_wfailprob;
   62         u_int                    sc_delaymsec;
   63         u_int                    sc_rdelayprob;
   64         u_int                    sc_wdelayprob;
   65         u_int                    sc_count_until_fail;
   66         uintmax_t                sc_reads;
   67         uintmax_t                sc_writes;
   68         uintmax_t                sc_deletes;
   69         uintmax_t                sc_getattrs;
   70         uintmax_t                sc_flushes;
   71         uintmax_t                sc_cmd0s;
   72         uintmax_t                sc_cmd1s;
   73         uintmax_t                sc_cmd2s;
   74         uintmax_t                sc_speedups;
   75         uintmax_t                sc_readbytes;
   76         uintmax_t                sc_wrotebytes;
   77         char                    *sc_physpath;
   78         struct mtx               sc_lock;
   79         struct g_nop_delay_head  sc_head_delay;
   80 };
   81 #endif  /* _KERNEL */
   82 
   83 #endif  /* _G_NOP_H_ */

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FreeBSD/Linux Kernel Cross Reference sys/geom/nop/g_nop.h

FreeBSD/Linux Kernel Cross Reference
sys/geom/nop/g_nop.h