external/gpl2/lvm2/dist/lib/unknown/unknown.c

   1 /*      $NetBSD$        */
   2
   3 /*
   4  * Copyright (C) 2004-2007 Red Hat, Inc. All rights reserved.
   5  *
   6  * This file is part of LVM2.
   7  *
   8  * This copyrighted material is made available to anyone wishing to use,
   9  * modify, copy, or redistribute it subject to the terms and conditions
  10  * of the GNU Lesser General Public License v.2.1.
  11  *
  12  * You should have received a copy of the GNU Lesser General Public License
  13  * along with this program; if not, write to the Free Software Foundation,
  14  * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  15  */
  16
  17 #include "lib.h"
  18 #include "toolcontext.h"
  19 #include "segtype.h"
  20 #include "display.h"
  21 #include "text_export.h"
  22 #include "text_import.h"
  23 #include "config.h"
  24 #include "str_list.h"
  25 #include "targets.h"
  26 #include "lvm-string.h"
  27 #include "activate.h"
  28 #include "str_list.h"
  29 #include "metadata.h"
  30
  31 static const char *_unknown_name(const struct lv_segment *seg)
  32 {
  33
  34         return seg->segtype->name;
  35 }
  36
  37 static int _unknown_text_import(struct lv_segment *seg, const struct config_node *sn,
  38                                 struct dm_hash_table *pv_hash)
  39 {
  40         struct config_node *new, *last = NULL, *head = NULL;
  41         const struct config_node *current;
  42         log_verbose("importing unknown segment");
  43         for (current = sn; current != NULL; current = current->sib) {
  44                 if (!strcmp(current->key, "type") || !strcmp(current->key, "start_extent") ||
  45                     !strcmp(current->key, "tags") || !strcmp(current->key, "extent_count"))
  46                         continue;
  47                 new = clone_config_node(seg->lv->vg->vgmem, current, 0);
  48                 if (!new)
  49                         return_0;
  50                 if (last)
  51                         last->sib = new;
  52                 if (!head)
  53                         head = new;
  54                 last = new;
  55         }
  56         seg->segtype_private = head;
  57         return 1;
  58 }
  59
  60 static int _unknown_text_export(const struct lv_segment *seg, struct formatter *f)
  61 {
  62         struct config_node *cn = seg->segtype_private;
  63         return out_config_node(f, cn);
  64 }
  65
  66 #ifdef DEVMAPPER_SUPPORT
  67 static int _unknown_add_target_line(struct dev_manager *dm __attribute((unused)),
  68                                 struct dm_pool *mem __attribute((unused)),
  69                                 struct cmd_context *cmd __attribute((unused)),
  70                                 void **target_state __attribute((unused)),
  71                                 struct lv_segment *seg __attribute((unused)),
  72                                 struct dm_tree_node *node, uint64_t len,
  73                                 uint32_t *pvmove_mirror_count __attribute((unused)))
  74 {
  75         return dm_tree_node_add_error_target(node, len);
  76 }
  77 #endif
  78
  79 static void _unknown_destroy(const struct segment_type *segtype)
  80 {
  81         dm_free((void *)segtype);
  82 }
  83
  84 static struct segtype_handler _unknown_ops = {
  85         .name = _unknown_name,
  86         .text_import = _unknown_text_import,
  87         .text_export = _unknown_text_export,
  88 #ifdef DEVMAPPER_SUPPORT
  89         .add_target_line = _unknown_add_target_line,
  90 #endif
  91         .destroy = _unknown_destroy,
  92 };
  93
  94 struct segment_type *init_unknown_segtype(struct cmd_context *cmd, const char *name)
  95 {
  96         struct segment_type *segtype = dm_malloc(sizeof(*segtype));
  97
  98         if (!segtype)
  99                 return_NULL;
 100
 101         segtype->cmd = cmd;
 102         segtype->ops = &_unknown_ops;
 103         segtype->name = dm_pool_strdup(cmd->mem, name);
 104         segtype->private = NULL;
 105         segtype->flags = SEG_UNKNOWN | SEG_VIRTUAL | SEG_CANNOT_BE_ZEROED;
 106
 107         log_very_verbose("Initialised segtype: %s", segtype->name);
 108
 109         return segtype;
 110 }