root/sys/geom/linux_lvm/g_linux_lvm.h
/*-
 * SPDX-License-Identifier: BSD-2-Clause
 *
 * Copyright (c) 2008 Andrew Thompson <thompsa@FreeBSD.org>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#define G_LLVM_DEBUG(lvl, ...) \
    _GEOM_DEBUG("GEOM_LINUX_LVM", g_llvm_debug, (lvl), NULL, __VA_ARGS__)

#define G_LLVM_CLASS_NAME       "LINUX_LVM"
#define G_LLVM_NAMELEN          128
#define G_LLVM_UUIDLEN          40
#define G_LLVM_MAGIC            "\040\114\126\115\062\040\170\133" \
                                "\065\101\045\162\060\116\052\076"

struct g_llvm_label {
        uint64_t        ll_sector;
        uint32_t        ll_crc;
        uint32_t        ll_offset;
        char            ll_uuid[G_LLVM_UUIDLEN];
        uint64_t        ll_size;
        uint64_t        ll_pestart;
        uint64_t        ll_md_offset;
        uint64_t        ll_md_size;
};

struct g_llvm_metadata {
        uint32_t                md_csum;
        uint32_t                md_version;
        uint64_t                md_start;
        uint64_t                md_size;
        uint64_t                md_reloffset;
        uint64_t                md_relsize;
        struct g_llvm_vg        *md_vg;
};

struct g_llvm_lv {
        LIST_ENTRY(g_llvm_lv)   lv_next;
        struct g_llvm_vg        *lv_vg;
        char                    lv_name[G_LLVM_NAMELEN];
        char                    lv_uuid[G_LLVM_UUIDLEN];
        int                     lv_sgcount;
        int                     lv_sgactive;
        struct g_provider       *lv_gprov;
        int                     lv_extentcount;
        LIST_HEAD(, g_llvm_segment) lv_segs;
        int                     lv_numsegs;
        struct g_llvm_segment   *lv_firstsg;
};

struct g_llvm_pv {
        LIST_ENTRY(g_llvm_pv)   pv_next;
        struct g_llvm_vg        *pv_vg;
        char                    pv_name[G_LLVM_NAMELEN];
        char                    pv_uuid[G_LLVM_UUIDLEN];
        size_t                  pv_size;
        off_t                   pv_start;
        int                     pv_count;
        struct g_provider       *pv_gprov;
        struct g_consumer       *pv_gcons;
};

struct g_llvm_segment {
        LIST_ENTRY(g_llvm_segment)      sg_next;
        int                     sg_start;
        int                     sg_end;
        int                     sg_count;
        char                    sg_pvname[G_LLVM_NAMELEN];
        struct g_llvm_pv        *sg_pv;
        int                     sg_pvstart;
        off_t                   sg_pvoffset;
};

struct g_llvm_vg {
        LIST_ENTRY(g_llvm_vg)   vg_next;
        char                    vg_name[G_LLVM_NAMELEN];
        char                    vg_uuid[G_LLVM_UUIDLEN];
        size_t                  vg_extentsize;
        int                     vg_sectorsize;
        struct g_geom           *vg_geom;
        LIST_HEAD(, g_llvm_pv)  vg_pvs;
        LIST_HEAD(, g_llvm_lv)  vg_lvs;
};