/*      $NetBSD: lvscan.c,v 1.1.1.3 2009/12/02 00:25:53 haad Exp $      */

/*
* Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
* Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
*
* This file is part of LVM2.
*
* This copyrighted material is made available to anyone wishing to use,
* modify, copy, or redistribute it subject to the terms and conditions
* of the GNU Lesser General Public License v.2.1.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/

#include "tools.h"

static int lvscan_single(struct cmd_context *cmd, struct logical_volume *lv,
                        void *handle __attribute((unused)))
{
       struct lvinfo info;
       int lv_total = 0;
       uint64_t lv_capacity_total = 0;
       int inkernel, snap_active = 1;
       struct lv_segment *snap_seg = NULL;
       float snap_percent;     /* fused, fsize; */
       percent_range_t percent_range;

       const char *active_str, *snapshot_str;

       if (!arg_count(cmd, all_ARG) && !lv_is_visible(lv))
               return ECMD_PROCESSED;

       inkernel = lv_info(cmd, lv, &info, 1, 0) && info.exists;
       if (lv_is_origin(lv)) {
               dm_list_iterate_items_gen(snap_seg, &lv->snapshot_segs,
                                      origin_list) {
                       if (inkernel &&
                           (snap_active = lv_snapshot_percent(snap_seg->cow,
                                                              &snap_percent,
                                                              &percent_range)))
                               if (percent_range == PERCENT_INVALID)
                                       snap_active = 0;
               }
               snap_seg = NULL;
       } else if (lv_is_cow(lv)) {
               if (inkernel &&
                   (snap_active = lv_snapshot_percent(lv, &snap_percent,
                                                      &percent_range)))
                       if (percent_range == PERCENT_INVALID)
                               snap_active = 0;
       }

/* FIXME Add -D arg to skip this! */
       if (inkernel && snap_active)
               active_str = "ACTIVE   ";
       else
               active_str = "inactive ";

       if (lv_is_origin(lv))
               snapshot_str = "Original";
       else if (lv_is_cow(lv))
               snapshot_str = "Snapshot";
       else
               snapshot_str = "        ";

       log_print("%s%s '%s%s/%s' [%s] %s", active_str, snapshot_str,
                 cmd->dev_dir, lv->vg->name, lv->name,
                 display_size(cmd, lv->size),
                 get_alloc_string(lv->alloc));

       lv_total++;

       lv_capacity_total += lv->size;

       return ECMD_PROCESSED;
}

int lvscan(struct cmd_context *cmd, int argc, char **argv)
{
       if (argc) {
               log_error("No additional command line arguments allowed");
               return EINVALID_CMD_LINE;
       }

       return process_each_lv(cmd, argc, argv, 0, NULL,
                              &lvscan_single);
}