sys/geom/linux_lvm/g_linux_lvm.h

   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  * $FreeBSD$
  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 };