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


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FreeBSD/Linux Kernel Cross Reference
sys/geom/linux_lvm/g_linux_lvm.h

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    1 /*-
    2  * Copyright (c) 2008 Andrew Thompson <thompsa@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/11.0/sys/geom/linux_lvm/g_linux_lvm.h 176417 2008-02-20 07:45:36Z thompsa $
   27  */
   28 
   29 #define G_LLVM_DEBUG(lvl, ...)  do {                                    \
   30         if (g_llvm_debug >= (lvl)) {                                    \
   31                 printf("GEOM_LINUX_LVM");                               \
   32                 if (g_llvm_debug > 0)                                   \
   33                         printf("[%u]", lvl);                            \
   34                 printf(": ");                                           \
   35                 printf(__VA_ARGS__);                                    \
   36                 printf("\n");                                           \
   37         }                                                               \
   38 } while (0)
   39 
   40 #define G_LLVM_CLASS_NAME       "LINUX_LVM"
   41 #define G_LLVM_NAMELEN          128
   42 #define G_LLVM_UUIDLEN          40
   43 #define G_LLVM_MAGIC            "\040\114\126\115\062\040\170\133" \
   44                                 "\065\101\045\162\060\116\052\076"
   45 
   46 struct g_llvm_label {
   47         uint64_t        ll_sector;
   48         uint32_t        ll_crc;
   49         uint32_t        ll_offset;
   50         char            ll_uuid[G_LLVM_UUIDLEN];
   51         uint64_t        ll_size;
   52         uint64_t        ll_pestart;
   53         uint64_t        ll_md_offset;
   54         uint64_t        ll_md_size;
   55 };
   56 
   57 struct g_llvm_metadata {
   58         uint32_t                md_csum;
   59         uint32_t                md_version;
   60         uint64_t                md_start;
   61         uint64_t                md_size;
   62         uint64_t                md_reloffset;
   63         uint64_t                md_relsize;
   64         struct g_llvm_vg        *md_vg;
   65 };
   66 
   67 struct g_llvm_lv {
   68         LIST_ENTRY(g_llvm_lv)   lv_next;
   69         struct g_llvm_vg        *lv_vg;
   70         char                    lv_name[G_LLVM_NAMELEN];
   71         char                    lv_uuid[G_LLVM_UUIDLEN];
   72         int                     lv_sgcount;
   73         int                     lv_sgactive;
   74         struct g_provider       *lv_gprov;
   75         int                     lv_extentcount;
   76         LIST_HEAD(, g_llvm_segment) lv_segs;
   77         int                     lv_numsegs;
   78         struct g_llvm_segment   *lv_firstsg;
   79 };
   80 
   81 struct g_llvm_pv {
   82         LIST_ENTRY(g_llvm_pv)   pv_next;
   83         struct g_llvm_vg        *pv_vg;
   84         char                    pv_name[G_LLVM_NAMELEN];
   85         char                    pv_uuid[G_LLVM_UUIDLEN];
   86         size_t                  pv_size;
   87         off_t                   pv_start;
   88         int                     pv_count;
   89         struct g_provider       *pv_gprov;
   90         struct g_consumer       *pv_gcons;
   91 };
   92 
   93 struct g_llvm_segment {
   94         LIST_ENTRY(g_llvm_segment)      sg_next;
   95         int                     sg_start;
   96         int                     sg_end;
   97         int                     sg_count;
   98         char                    sg_pvname[G_LLVM_NAMELEN];
   99         struct g_llvm_pv        *sg_pv;
  100         int                     sg_pvstart;
  101         off_t                   sg_pvoffset;
  102 };
  103 
  104 struct g_llvm_vg {
  105         LIST_ENTRY(g_llvm_vg)   vg_next;
  106         char                    vg_name[G_LLVM_NAMELEN];
  107         char                    vg_uuid[G_LLVM_UUIDLEN];
  108         size_t                  vg_extentsize;
  109         int                     vg_sectorsize;
  110         struct g_geom           *vg_geom;
  111         LIST_HEAD(, g_llvm_pv)  vg_pvs;
  112         LIST_HEAD(, g_llvm_lv)  vg_lvs;
  113 };

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