The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]

FreeBSD/Linux Kernel Cross Reference
sys/geom/shsec/g_shsec.h

Version: -  FREEBSD  -  FREEBSD-13-STABLE  -  FREEBSD-13-0  -  FREEBSD-12-STABLE  -  FREEBSD-12-0  -  FREEBSD-11-STABLE  -  FREEBSD-11-0  -  FREEBSD-10-STABLE  -  FREEBSD-10-0  -  FREEBSD-9-STABLE  -  FREEBSD-9-0  -  FREEBSD-8-STABLE  -  FREEBSD-8-0  -  FREEBSD-7-STABLE  -  FREEBSD-7-0  -  FREEBSD-6-STABLE  -  FREEBSD-6-0  -  FREEBSD-5-STABLE  -  FREEBSD-5-0  -  FREEBSD-4-STABLE  -  FREEBSD-3-STABLE  -  FREEBSD22  -  l41  -  OPENBSD  -  linux-2.6  -  MK84  -  PLAN9  -  xnu-8792 
SearchContext: -  none  -  3  -  10 

    1 /*-
    2  * Copyright (c) 2005 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: releng/8.3/sys/geom/shsec/g_shsec.h 155174 2006-02-01 12:06:01Z pjd $
   27  */
   28 
   29 #ifndef _G_SHSEC_H_
   30 #define _G_SHSEC_H_
   31 
   32 #include <sys/endian.h>
   33 
   34 #define G_SHSEC_CLASS_NAME      "SHSEC"
   35 
   36 #define G_SHSEC_MAGIC           "GEOM::SHSEC"
   37 /*
   38  * Version history:
   39  * 0 - Initial version number.
   40  * 1 - Added md_provsize field to metadata.
   41  */
   42 #define G_SHSEC_VERSION 1
   43 
   44 #ifdef _KERNEL
   45 #define G_SHSEC_BFLAG_FIRST     0x1
   46 
   47 #define G_SHSEC_DEBUG(lvl, ...) do {                                    \
   48         if (g_shsec_debug >= (lvl)) {                                   \
   49                 printf("GEOM_SHSEC");                                   \
   50                 if (g_shsec_debug > 0)                                  \
   51                         printf("[%u]", lvl);                            \
   52                 printf(": ");                                           \
   53                 printf(__VA_ARGS__);                                    \
   54                 printf("\n");                                           \
   55         }                                                               \
   56 } while (0)
   57 #define G_SHSEC_LOGREQ(lvl, bp, ...)    do {                            \
   58         if (g_shsec_debug >= (lvl)) {                                   \
   59                 printf("GEOM_SHSEC");                                   \
   60                 if (g_shsec_debug > 0)                                  \
   61                         printf("[%u]", lvl);                            \
   62                 printf(": ");                                           \
   63                 printf(__VA_ARGS__);                                    \
   64                 printf(" ");                                            \
   65                 g_print_bio(bp);                                        \
   66                 printf("\n");                                           \
   67         }                                                               \
   68 } while (0)
   69 
   70 struct g_shsec_softc {
   71         u_int            sc_type;       /* provider type */
   72         struct g_geom   *sc_geom;
   73         struct g_provider *sc_provider;
   74         uint32_t         sc_id;         /* device unique ID */
   75         struct g_consumer **sc_disks;
   76         uint16_t         sc_ndisks;
   77 };
   78 #define sc_name sc_geom->name
   79 #endif  /* _KERNEL */
   80 
   81 struct g_shsec_metadata {
   82         char            md_magic[16];   /* Magic value. */
   83         uint32_t        md_version;     /* Version number. */
   84         char            md_name[16];    /* Stripe name. */
   85         uint32_t        md_id;          /* Unique ID. */
   86         uint16_t        md_no;          /* Disk number. */
   87         uint16_t        md_all;         /* Number of all disks. */
   88         char            md_provider[16]; /* Hardcoded provider. */
   89         uint64_t        md_provsize;    /* Provider's size. */
   90 };
   91 static __inline void
   92 shsec_metadata_encode(const struct g_shsec_metadata *md, u_char *data)
   93 {
   94 
   95         bcopy(md->md_magic, data, sizeof(md->md_magic));
   96         le32enc(data + 16, md->md_version);
   97         bcopy(md->md_name, data + 20, sizeof(md->md_name));
   98         le32enc(data + 36, md->md_id);
   99         le16enc(data + 40, md->md_no);
  100         le16enc(data + 42, md->md_all);
  101         bcopy(md->md_provider, data + 44, sizeof(md->md_provider));
  102         le64enc(data + 60, md->md_provsize);
  103 }
  104 static __inline void
  105 shsec_metadata_decode(const u_char *data, struct g_shsec_metadata *md)
  106 {
  107 
  108         bcopy(data, md->md_magic, sizeof(md->md_magic));
  109         md->md_version = le32dec(data + 16);
  110         bcopy(data + 20, md->md_name, sizeof(md->md_name));
  111         md->md_id = le32dec(data + 36);
  112         md->md_no = le16dec(data + 40);
  113         md->md_all = le16dec(data + 42);
  114         bcopy(data + 44, md->md_provider, sizeof(md->md_provider));
  115         md->md_provsize = le64dec(data + 60);
  116 }
  117 #endif  /* _G_SHSEC_H_ */

Cache object: 912dbab75156c5e597caf781b65ef7b5


[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]


This page is part of the FreeBSD/Linux Linux Kernel Cross-Reference, and was automatically generated using a modified version of the LXR engine.