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 1.18 2008/10/09 04:20:59 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 #define FLAG_BADCHILDPARENT     0x0008
  43
  44 static void print_btree_node(hammer_off_t node_offset, int depth, int spike,
  45                         hammer_base_elm_t left_bound,
  46                         hammer_base_elm_t right_bound);
  47 static const char *check_data_crc(hammer_btree_elm_t elm);
  48 static void print_record(hammer_btree_elm_t elm);
  49 static void print_btree_elm(hammer_btree_elm_t elm, int i, u_int8_t type,
  50                         int flags, const char *label);
  51 static int print_elm_flags(hammer_node_ondisk_t node, hammer_off_t node_offset,
  52                         hammer_btree_elm_t elm, u_int8_t btype,
  53                         hammer_base_elm_t left_bound,
  54                         hammer_base_elm_t right_bound);
  55 static void print_bigblock_fill(hammer_off_t offset);
  56
  57 void
  58 hammer_cmd_show(hammer_off_t node_offset, int depth,
  59                 hammer_base_elm_t left_bound, hammer_base_elm_t right_bound)
  60 {
  61         struct volume_info *volume;
  62
  63         if (node_offset == (hammer_off_t)-1) {
  64                 volume = get_volume(RootVolNo);
  65                 node_offset = volume->ondisk->vol0_btree_root;
  66                 if (QuietOpt < 3) {
  67                         printf("Volume header\trecords=%lld next_tid=%016llx\n",
  68                                volume->ondisk->vol0_stat_records,
  69                                volume->ondisk->vol0_next_tid);
  70                 }
  71                 rel_volume(volume);
  72         }
  73         printf("show %016llx depth %d\n", node_offset, depth);
  74         print_btree_node(node_offset, depth, 0, left_bound, right_bound);
  75         print_btree_node(node_offset, depth, 1, left_bound, right_bound);
  76 }
  77
  78 static void
  79 print_btree_node(hammer_off_t node_offset, int depth, int spike,
  80                  hammer_base_elm_t left_bound, hammer_base_elm_t right_bound)
  81 {
  82         struct buffer_info *buffer = NULL;
  83         hammer_node_ondisk_t node;
  84         hammer_btree_elm_t elm;
  85         int i;
  86         int flags;
  87         int maxcount;
  88         char badc;
  89
  90         node = get_node(node_offset, &buffer);
  91
  92         if (crc32(&node->crc + 1, HAMMER_BTREE_CRCSIZE) == node->crc)
  93                 badc = ' ';
  94         else
  95                 badc = 'B';
  96
  97         if (spike == 0) {
  98                 printf("%c   NODE %016llx cnt=%d p=%016llx "
  99                        "type=%c depth=%d",
 100                        badc,
 101                        node_offset, node->count, node->parent,
 102                        (node->type ? node->type : '?'), depth);
 103                 printf(" mirror %016llx", node->mirror_tid);
 104                 if (QuietOpt < 3) {
 105                         printf(" fill=");
 106                         print_bigblock_fill(node_offset);
 107                 }
 108                 printf(" {\n");
 109
 110                 maxcount = (node->type == HAMMER_BTREE_TYPE_INTERNAL) ?
 111                            HAMMER_BTREE_INT_ELMS : HAMMER_BTREE_LEAF_ELMS;
 112
 113                 for (i = 0; i < node->count && i < maxcount; ++i) {
 114                         elm = &node->elms[i];
 115                         flags = print_elm_flags(node, node_offset,
 116                                                 elm, elm->base.btype,
 117                                                 left_bound, right_bound);
 118                         print_btree_elm(elm, i, node->type, flags, "ELM");
 119                 }
 120                 if (node->type == HAMMER_BTREE_TYPE_INTERNAL) {
 121                         elm = &node->elms[i];
 122                         flags = print_elm_flags(node, node_offset,
 123                                                 elm, 'I',
 124                                                 left_bound, right_bound);
 125                         print_btree_elm(elm, i, node->type, flags, "RBN");
 126                 }
 127                 printf("    }\n");
 128         }
 129
 130         for (i = 0; i < node->count; ++i) {
 131                 elm = &node->elms[i];
 132
 133                 switch(node->type) {
 134                 case HAMMER_BTREE_TYPE_INTERNAL:
 135                         if (elm->internal.subtree_offset) {
 136                                 print_btree_node(elm->internal.subtree_offset,
 137                                                  depth + 1, spike,
 138                                                  &elm[0].base, &elm[1].base);
 139                         }
 140                         break;
 141                 default:
 142                         break;
 143                 }
 144         }
 145         rel_buffer(buffer);
 146 }
 147
 148 static
 149 void
 150 print_btree_elm(hammer_btree_elm_t elm, int i, u_int8_t type,
 151                 int flags, const char *label)
 152 {
 153         char flagstr[8] = { 0, '-', '-', '-', '-', '-', '-', 0 };
 154
 155         flagstr[0] = flags ? 'B' : 'G';
 156         if (flags & FLAG_TOOFARLEFT)
 157                 flagstr[2] = 'L';
 158         if (flags & FLAG_TOOFARRIGHT)
 159                 flagstr[3] = 'R';
 160         if (flags & FLAG_BADTYPE)
 161                 flagstr[4] = 'T';
 162         if (flags & FLAG_BADCHILDPARENT)
 163                 flagstr[4] = 'C';
 164
 165         printf("%s\t%s %2d %c ",
 166                flagstr, label, i,
 167                (elm->base.btype ? elm->base.btype : '?'));
 168         printf("obj=%016llx key=%016llx lo=%08x rt=%02x ot=%02x\n",
 169                elm->base.obj_id,
 170                elm->base.key,
 171                elm->base.localization,
 172                elm->base.rec_type,
 173                elm->base.obj_type);
 174         printf("\t       %c tids %016llx:%016llx ",
 175                 (elm->base.delete_tid ? 'd' : ' '),
 176                elm->base.create_tid,
 177                elm->base.delete_tid);
 178
 179         switch(type) {
 180         case HAMMER_BTREE_TYPE_INTERNAL:
 181                 printf("suboff=%016llx", elm->internal.subtree_offset);
 182                 if (QuietOpt < 3)
 183                         printf(" mirror %016llx", elm->internal.mirror_tid);
 184                 break;
 185         case HAMMER_BTREE_TYPE_LEAF:
 186                 switch(elm->base.btype) {
 187                 case HAMMER_BTREE_TYPE_RECORD:
 188                         printf("\n%s\t         ", check_data_crc(elm));
 189                         printf("dataoff=%016llx/%d",
 190                                 elm->leaf.data_offset, elm->leaf.data_len);
 191                         if (QuietOpt < 3) {
 192                                 printf(" crc=%04x", elm->leaf.data_crc);
 193                                 printf("\n\t         fills=");
 194                                 print_bigblock_fill(elm->leaf.data_offset);
 195                         }
 196                         if (QuietOpt < 2)
 197                                 print_record(elm);
 198                         break;
 199                 }
 200                 break;
 201         default:
 202                 break;
 203         }
 204         printf("\n");
 205 }
 206
 207 static
 208 int
 209 print_elm_flags(hammer_node_ondisk_t node, hammer_off_t node_offset,
 210                 hammer_btree_elm_t elm, u_int8_t btype,
 211                 hammer_base_elm_t left_bound, hammer_base_elm_t right_bound)
 212 {
 213         int flags = 0;
 214
 215         switch(node->type) {
 216         case HAMMER_BTREE_TYPE_INTERNAL:
 217                 if (elm->internal.subtree_offset) {
 218                         struct buffer_info *buffer = NULL;
 219                         hammer_node_ondisk_t subnode;
 220
 221                         subnode = get_node(elm->internal.subtree_offset,
 222                                            &buffer);
 223                         if (subnode->parent != node_offset)
 224                                 flags |= FLAG_BADCHILDPARENT;
 225                         rel_buffer(buffer);
 226                 }
 227
 228                 switch(btype) {
 229                 case HAMMER_BTREE_TYPE_INTERNAL:
 230                         if (left_bound == NULL || right_bound == NULL)
 231                                 break;
 232                         if (hammer_btree_cmp(&elm->base, left_bound) < 0)
 233                                 flags |= FLAG_TOOFARLEFT;
 234                         if (hammer_btree_cmp(&elm->base, right_bound) > 0)
 235                                 flags |= FLAG_TOOFARRIGHT;
 236                         break;
 237                 case HAMMER_BTREE_TYPE_LEAF:
 238                         if (left_bound == NULL || right_bound == NULL)
 239                                 break;
 240                         if (hammer_btree_cmp(&elm->base, left_bound) < 0)
 241                                 flags |= FLAG_TOOFARLEFT;
 242                         if (hammer_btree_cmp(&elm->base, right_bound) >= 0)
 243                                 flags |= FLAG_TOOFARRIGHT;
 244                         break;
 245                 default:
 246                         flags |= FLAG_BADTYPE;
 247                         break;
 248                 }
 249                 break;
 250         case HAMMER_BTREE_TYPE_LEAF:
 251                 switch(btype) {
 252                 case HAMMER_BTREE_TYPE_RECORD:
 253                         if (left_bound == NULL || right_bound == NULL)
 254                                 break;
 255                         if (hammer_btree_cmp(&elm->base, left_bound) < 0)
 256                                 flags |= FLAG_TOOFARLEFT;
 257                         if (hammer_btree_cmp(&elm->base, right_bound) >= 0)
 258                                 flags |= FLAG_TOOFARRIGHT;
 259                         break;
 260                 default:
 261                         flags |= FLAG_BADTYPE;
 262                         break;
 263                 }
 264                 break;
 265         default:
 266                 flags |= FLAG_BADTYPE;
 267                 break;
 268         }
 269         return(flags);
 270 }
 271
 272 static
 273 void
 274 print_bigblock_fill(hammer_off_t offset)
 275 {
 276         struct hammer_blockmap_layer1 layer1;
 277         struct hammer_blockmap_layer2 layer2;
 278         int fill;
 279
 280         blockmap_lookup(offset, &layer1, &layer2);
 281         fill = layer2.bytes_free * 100 / HAMMER_LARGEBLOCK_SIZE;
 282         fill = 100 - fill;
 283
 284         printf("z%d:%lld=%d%%",
 285                 HAMMER_ZONE_DECODE(offset),
 286                 (offset & ~HAMMER_OFF_ZONE_MASK) / HAMMER_LARGEBLOCK_SIZE,
 287                 fill
 288         );
 289 }
 290
 291 /*
 292  * Check the generic crc on a data element.  Inodes record types are
 293  * special in that some of their fields are not CRCed.
 294  */
 295 static
 296 const char *
 297 check_data_crc(hammer_btree_elm_t elm)
 298 {
 299         struct buffer_info *data_buffer;
 300         hammer_off_t data_offset;
 301         int32_t data_len;
 302         int32_t len;
 303         u_int32_t crc;
 304         char *ptr;
 305
 306         data_offset = elm->leaf.data_offset;
 307         data_len = elm->leaf.data_len;
 308         data_buffer = NULL;
 309         if (data_offset == 0 || data_len == 0)
 310                 return("Z");
 311
 312         crc = 0;
 313         while (data_len) {
 314                 ptr = get_buffer_data(data_offset, &data_buffer, 0);
 315                 len = HAMMER_BUFSIZE - ((int)data_offset & HAMMER_BUFMASK);
 316                 if (len > data_len)
 317                         len = (int)data_len;
 318                 if (elm->leaf.base.rec_type == HAMMER_RECTYPE_INODE &&
 319                     data_len == sizeof(struct hammer_inode_data)) {
 320                         crc = crc32_ext(ptr, HAMMER_INODE_CRCSIZE, crc);
 321                 } else {
 322                         crc = crc32_ext(ptr, len, crc);
 323                 }
 324                 data_len -= len;
 325                 data_offset += len;
 326         }
 327         if (data_buffer)
 328                 rel_buffer(data_buffer);
 329         if (crc == elm->leaf.data_crc)
 330                 return("");
 331         return("B");
 332 }
 333
 334 static
 335 void
 336 print_record(hammer_btree_elm_t elm)
 337 {
 338         struct buffer_info *data_buffer;
 339         hammer_off_t data_offset;
 340         int32_t data_len;
 341         hammer_data_ondisk_t data;
 342
 343         data_offset = elm->leaf.data_offset;
 344         data_len = elm->leaf.data_len;
 345         data_buffer = NULL;
 346
 347         if (data_offset)
 348                 data = get_buffer_data(data_offset, &data_buffer, 0);
 349         else
 350                 data = NULL;
 351
 352         switch(elm->leaf.base.rec_type) {
 353         case HAMMER_RECTYPE_INODE:
 354                 printf("\n%17s", "");
 355                 printf("size=%lld nlinks=%lld",
 356                        data->inode.size, data->inode.nlinks);
 357                 if (QuietOpt < 1) {
 358                         printf(" mode=%05o uflags=%08x\n",
 359                                 data->inode.mode,
 360                                 data->inode.uflags);
 361                         printf("%17s", "");
 362                         printf("ctime=%016llx pobjid=%016llx obj_type=%d\n",
 363                                 data->inode.ctime, data->inode.parent_obj_id,
 364                                 data->inode.obj_type);
 365                         printf("%17s", "");
 366                         printf("mtime=%016llx", data->inode.mtime);
 367                 }
 368                 break;
 369         case HAMMER_RECTYPE_DIRENTRY:
 370                 printf("\n%17s", "");
 371                 data_len -= HAMMER_ENTRY_NAME_OFF;
 372                 printf("dir-entry ino=%016llx lo=%08x name=\"%*.*s\"",
 373                        data->entry.obj_id,
 374                        data->entry.localization,
 375                        data_len, data_len, data->entry.name);
 376                 break;
 377         case HAMMER_RECTYPE_FIX:
 378                 switch(elm->leaf.base.key) {
 379                 case HAMMER_FIXKEY_SYMLINK:
 380                         data_len -= HAMMER_SYMLINK_NAME_OFF;
 381                         printf("\n%17s", "");
 382                         printf("symlink=\"%*.*s\"", data_len, data_len,
 383                                 data->symlink.name);
 384                         break;
 385                 default:
 386                         break;
 387                 }
 388                 break;
 389         default:
 390                 break;
 391         }
 392         if (data_buffer)
 393                 rel_buffer(data_buffer);
 394 }
 395