sbin/hammer/cmd_show.c

   1 /*
   2  * Copyright (c) 2008 The DragonFly Project.  All rights reserved.
   3  *
   4  * This code is derived from software contributed to The DragonFly Project
   5  * by Matthew Dillon <dillon@backplane.com>
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  *
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in
  15  *    the documentation and/or other materials provided with the
  16  *    distribution.
  17  * 3. Neither the name of The DragonFly Project nor the names of its
  18  *    contributors may be used to endorse or promote products derived
  19  *    from this software without specific, prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  24  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
  25  * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  26  * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
  27  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  28  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  29  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  30  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
  31  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  *
  34  * $DragonFly: src/sbin/hammer/cmd_show.c,v 1.5 2008/02/08 08:30:56 dillon Exp $
  35  */
  36
  37 #include "hammer.h"
  38
  39 #define FLAG_TOOFARLEFT         0x0001
  40 #define FLAG_TOOFARRIGHT        0x0002
  41 #define FLAG_BADTYPE            0x0004
  42
  43 static void print_btree_node(hammer_off_t node_offset, int depth, int spike,
  44                         hammer_base_elm_t left_bound,
  45                         hammer_base_elm_t right_bound);
  46 static void print_btree_elm(hammer_btree_elm_t elm, int i, u_int8_t type,
  47                         int flags, const char *label);
  48 static int print_elm_flags(hammer_node_ondisk_t node, hammer_btree_elm_t elm,
  49                         u_int8_t btype, hammer_base_elm_t left_bound,
  50                         hammer_base_elm_t right_bound);
  51
  52 void
  53 hammer_cmd_show(hammer_off_t node_offset, int depth,
  54                 hammer_base_elm_t left_bound, hammer_base_elm_t right_bound)
  55 {
  56         struct volume_info *volume;
  57
  58         if (node_offset == (hammer_off_t)-1) {
  59                 volume = get_volume(RootVolNo);
  60                 node_offset = volume->ondisk->vol0_btree_root;
  61                 if (VerboseOpt) {
  62                         printf("\trecords=%lld\n",
  63                                volume->ondisk->vol0_stat_records);
  64                 }
  65                 rel_volume(volume);
  66         }
  67         printf("show %016llx depth %d\n", node_offset, depth);
  68         print_btree_node(node_offset, depth, 0, left_bound, right_bound);
  69         print_btree_node(node_offset, depth, 1, left_bound, right_bound);
  70 }
  71
  72 static void
  73 print_btree_node(hammer_off_t node_offset, int depth, int spike,
  74                  hammer_base_elm_t left_bound, hammer_base_elm_t right_bound)
  75 {
  76         struct buffer_info *buffer = NULL;
  77         hammer_node_ondisk_t node;
  78         hammer_btree_elm_t elm;
  79         int i;
  80         int flags;
  81
  82         node = get_node(node_offset, &buffer);
  83
  84         if (spike == 0) {
  85                 printf("    NODE %016llx count=%d parent=%016llx "
  86                        "type=%c depth=%d {\n",
  87                        node_offset, node->count, node->parent,
  88                        (node->type ? node->type : '?'), depth);
  89
  90                 for (i = 0; i < node->count; ++i) {
  91                         elm = &node->elms[i];
  92                         flags = print_elm_flags(node, elm, elm->base.btype,
  93                                                 left_bound, right_bound);
  94                         print_btree_elm(elm, i, node->type, flags, "ELM");
  95                 }
  96                 if (node->type == HAMMER_BTREE_TYPE_INTERNAL) {
  97                         elm = &node->elms[i];
  98                         flags = print_elm_flags(node, elm, 'I',
  99                                                 left_bound, right_bound);
 100                         print_btree_elm(elm, i, node->type, flags, "RBN");
 101                 }
 102                 printf("    }\n");
 103         }
 104
 105         for (i = 0; i < node->count; ++i) {
 106                 elm = &node->elms[i];
 107
 108                 switch(node->type) {
 109                 case HAMMER_BTREE_TYPE_INTERNAL:
 110                         if (elm->internal.subtree_offset) {
 111                                 print_btree_node(elm->internal.subtree_offset,
 112                                                  depth + 1, spike,
 113                                                  &elm[0].base, &elm[1].base);
 114                         }
 115                         break;
 116                 default:
 117                         break;
 118                 }
 119         }
 120         rel_buffer(buffer);
 121 }
 122
 123 static
 124 void
 125 print_btree_elm(hammer_btree_elm_t elm, int i, u_int8_t type,
 126                 int flags, const char *label)
 127 {
 128         char flagstr[8] = { 0, '-', '-', '-', '-', '-', '-', 0 };
 129
 130         flagstr[0] = flags ? 'B' : 'G';
 131         if (flags & FLAG_TOOFARLEFT)
 132                 flagstr[2] = 'L';
 133         if (flags & FLAG_TOOFARRIGHT)
 134                 flagstr[3] = 'R';
 135         if (flags & FLAG_BADTYPE)
 136                 flagstr[4] = 'T';
 137
 138         printf("%s\t%s %2d %c ",
 139                flagstr, label, i,
 140                (elm->base.btype ? elm->base.btype : '?'));
 141         printf("obj=%016llx key=%016llx rt=%02x ot=%02x\n",
 142                elm->base.obj_id,
 143                elm->base.key,
 144                elm->base.rec_type,
 145                elm->base.obj_type);
 146         printf("\t         tids %016llx:%016llx ",
 147                elm->base.create_tid,
 148                elm->base.delete_tid);
 149
 150         switch(type) {
 151         case HAMMER_BTREE_TYPE_INTERNAL:
 152                 printf("suboff=%016llx", elm->internal.subtree_offset);
 153                 break;
 154         case HAMMER_BTREE_TYPE_LEAF:
 155                 switch(elm->base.btype) {
 156                 case HAMMER_BTREE_TYPE_RECORD:
 157                         printf("recoff=%016llx", elm->leaf.rec_offset);
 158                         break;
 159                 }
 160                 break;
 161         default:
 162                 break;
 163         }
 164         printf("\n");
 165 }
 166
 167 static
 168 int
 169 print_elm_flags(hammer_node_ondisk_t node, hammer_btree_elm_t elm,
 170                 u_int8_t btype,
 171                 hammer_base_elm_t left_bound, hammer_base_elm_t right_bound)
 172 {
 173         int flags = 0;
 174
 175         switch(node->type) {
 176         case HAMMER_BTREE_TYPE_INTERNAL:
 177                 switch(btype) {
 178                 case HAMMER_BTREE_TYPE_INTERNAL:
 179                         if (left_bound == NULL || right_bound == NULL)
 180                                 break;
 181                         if (hammer_btree_cmp(&elm->base, left_bound) < 0)
 182                                 flags |= FLAG_TOOFARLEFT;
 183                         if (hammer_btree_cmp(&elm->base, right_bound) > 0)
 184                                 flags |= FLAG_TOOFARRIGHT;
 185                         break;
 186                 case HAMMER_BTREE_TYPE_LEAF:
 187                         if (left_bound == NULL || right_bound == NULL)
 188                                 break;
 189                         if (hammer_btree_cmp(&elm->base, left_bound) < 0)
 190                                 flags |= FLAG_TOOFARLEFT;
 191                         if (hammer_btree_cmp(&elm->base, right_bound) >= 0)
 192                                 flags |= FLAG_TOOFARRIGHT;
 193                         break;
 194                 default:
 195                         flags |= FLAG_BADTYPE;
 196                         break;
 197                 }
 198                 break;
 199         case HAMMER_BTREE_TYPE_LEAF:
 200                 switch(btype) {
 201                 case HAMMER_BTREE_TYPE_RECORD:
 202                         if (left_bound == NULL || right_bound == NULL)
 203                                 break;
 204                         if (hammer_btree_cmp(&elm->base, left_bound) < 0)
 205                                 flags |= FLAG_TOOFARLEFT;
 206                         if (hammer_btree_cmp(&elm->base, right_bound) >= 0)
 207                                 flags |= FLAG_TOOFARRIGHT;
 208                         break;
 209                 default:
 210                         flags |= FLAG_BADTYPE;
 211                         break;
 212                 }
 213                 break;
 214         default:
 215                 flags |= FLAG_BADTYPE;
 216                 break;
 217         }
 218         return(flags);
 219 }
 220