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
  35 #include "hammer.h"
  36 #include <libutil.h>
  37
  38 #define FLAG_TOOFARLEFT         0x0001
  39 #define FLAG_TOOFARRIGHT        0x0002
  40 #define FLAG_BADTYPE            0x0004
  41 #define FLAG_BADCHILDPARENT     0x0008
  42 #define FLAG_BADMIRRORTID       0x0010
  43
  44 typedef struct btree_search {
  45         u_int32_t       lo;
  46         int64_t         obj_id;
  47         u_int16_t       rec_type;
  48         int64_t         key;
  49         hammer_tid_t    create_tid;
  50         int             limit;   /* # of fields to test */
  51         int             filter;  /* filter type (default -1) */
  52 } *btree_search_t;
  53
  54 static void print_btree_node(hammer_off_t node_offset, btree_search_t search,
  55                         int depth, hammer_tid_t mirror_tid,
  56                         hammer_base_elm_t left_bound,
  57                         hammer_base_elm_t right_bound);
  58 static const char *check_data_crc(hammer_btree_elm_t elm);
  59 static void print_record(hammer_btree_elm_t elm);
  60 static void print_btree_elm(hammer_btree_elm_t elm, int i, u_int8_t type,
  61                         int flags, const char *label, const char *ext);
  62 static int get_elm_flags(hammer_node_ondisk_t node, hammer_off_t node_offset,
  63                         hammer_btree_elm_t elm, u_int8_t btype,
  64                         hammer_base_elm_t left_bound,
  65                         hammer_base_elm_t right_bound);
  66 static void print_bigblock_fill(hammer_off_t offset);
  67 static int init_btree_search(const char *arg, int filter,
  68                         btree_search_t search);
  69 static int test_btree_search(hammer_btree_elm_t elm, btree_search_t search);
  70
  71 void
  72 hammer_cmd_show(hammer_off_t node_offset, const char *arg,
  73                 int filter, int depth,
  74                 hammer_base_elm_t left_bound, hammer_base_elm_t right_bound)
  75 {
  76         struct volume_info *volume;
  77         struct btree_search search;
  78         btree_search_t searchp = NULL;
  79         int zone;
  80
  81         AssertOnFailure = 0;
  82
  83         if (node_offset == (hammer_off_t)-1) {
  84                 volume = get_volume(RootVolNo);
  85                 node_offset = volume->ondisk->vol0_btree_root;
  86                 if (QuietOpt < 3) {
  87                         printf("Volume header\trecords=%jd next_tid=%016jx\n",
  88                                (intmax_t)volume->ondisk->vol0_stat_records,
  89                                (uintmax_t)volume->ondisk->vol0_next_tid);
  90                         printf("\t\tbufoffset=%016jx\n",
  91                                (uintmax_t)volume->ondisk->vol_buf_beg);
  92                         for (zone = 0; zone < HAMMER_MAX_ZONES; ++zone) {
  93                                 printf("\t\tzone %d\tnext_offset=%016jx\n",
  94                                         zone,
  95                                         (uintmax_t)volume->ondisk->vol0_blockmap[zone].next_offset
  96                                 );
  97                         }
  98                 }
  99                 rel_volume(volume);
 100         }
 101
 102         printf("show %016jx", (uintmax_t)node_offset);
 103         if (arg) {
 104                 assert(init_btree_search(arg, filter, &search) != -1);
 105                 if (search.limit >= 1)
 106                         printf(" lo %08x obj_id %016jx",
 107                                 search.lo, (uintmax_t)search.obj_id);
 108                 if (search.limit >= 3)
 109                         printf(" rec_type %02x", search.rec_type);
 110                 if (search.limit >= 4)
 111                         printf(" key %016jx", (uintmax_t)search.key);
 112                 if (search.limit == 5)
 113                         printf(" create_tid %016jx\n",
 114                                 (uintmax_t)search.create_tid);
 115                 searchp = &search;
 116         }
 117         printf(" depth %d\n", depth);
 118         print_btree_node(node_offset, searchp, depth, HAMMER_MAX_TID,
 119                          left_bound, right_bound);
 120
 121         AssertOnFailure = 1;
 122 }
 123
 124 static void
 125 print_btree_node(hammer_off_t node_offset, btree_search_t search,
 126                 int depth, hammer_tid_t mirror_tid,
 127                 hammer_base_elm_t left_bound, hammer_base_elm_t right_bound)
 128 {
 129         struct buffer_info *buffer = NULL;
 130         hammer_node_ondisk_t node;
 131         hammer_btree_elm_t elm;
 132         int i;
 133         int flags;
 134         int maxcount;
 135         char badc;
 136         char badm;
 137         const char *ext;
 138
 139         node = get_node(node_offset, &buffer);
 140
 141         if (node == NULL) {
 142                 printf("BI   NODE %016jx (IO ERROR)\n",
 143                        (uintmax_t)node_offset);
 144                 return;
 145         }
 146
 147         if (crc32(&node->crc + 1, HAMMER_BTREE_CRCSIZE) == node->crc)
 148                 badc = ' ';
 149         else
 150                 badc = 'B';
 151
 152         if (node->mirror_tid <= mirror_tid) {
 153                 badm = ' ';
 154         } else {
 155                 badm = 'M';
 156                 badc = 'B';
 157         }
 158
 159         printf("%c%c   NODE %016jx cnt=%02d p=%016jx "
 160                "type=%c depth=%d",
 161                badc,
 162                badm,
 163                (uintmax_t)node_offset, node->count,
 164                (uintmax_t)node->parent,
 165                (node->type ? node->type : '?'), depth);
 166         printf(" mirror %016jx", (uintmax_t)node->mirror_tid);
 167         if (QuietOpt < 3) {
 168                 printf(" fill=");
 169                 print_bigblock_fill(node_offset);
 170         }
 171         printf(" {\n");
 172
 173         maxcount = (node->type == HAMMER_BTREE_TYPE_INTERNAL) ?
 174                    HAMMER_BTREE_INT_ELMS : HAMMER_BTREE_LEAF_ELMS;
 175
 176         for (i = 0; i < node->count && i < maxcount; ++i) {
 177                 elm = &node->elms[i];
 178
 179                 if (node->type != HAMMER_BTREE_TYPE_INTERNAL) {
 180                         ext = NULL;
 181                         if (search && test_btree_search(elm, search) == 0)
 182                                 ext = " *";
 183                 } else if (search) {
 184                         ext = " *";
 185                         if (test_btree_search(elm, search) > 0 ||
 186                             test_btree_search(elm + 1, search) < 0)
 187                                 ext = NULL;
 188                 } else {
 189                         ext = NULL;
 190                 }
 191
 192                 flags = get_elm_flags(node, node_offset,
 193                                         elm, elm->base.btype,
 194                                         left_bound, right_bound);
 195                 print_btree_elm(elm, i, node->type, flags, "ELM", ext);
 196         }
 197         if (node->type == HAMMER_BTREE_TYPE_INTERNAL) {
 198                 elm = &node->elms[i];
 199
 200                 flags = get_elm_flags(node, node_offset,
 201                                         elm, 'I',
 202                                         left_bound, right_bound);
 203                 print_btree_elm(elm, i, node->type, flags, "RBN", NULL);
 204         }
 205         printf("     }\n");
 206
 207         for (i = 0; i < node->count; ++i) {
 208                 elm = &node->elms[i];
 209
 210                 switch(node->type) {
 211                 case HAMMER_BTREE_TYPE_INTERNAL:
 212                         if (search && search->filter) {
 213                                 if (test_btree_search(elm, search) > 0 ||
 214                                     test_btree_search(elm + 1, search) < 0)
 215                                         break;
 216                         }
 217                         if (elm->internal.subtree_offset) {
 218                                 print_btree_node(elm->internal.subtree_offset,
 219                                                  search, depth + 1,
 220                                                  elm->internal.mirror_tid,
 221                                                  &elm[0].base, &elm[1].base);
 222                                 /*
 223                                  * Cause show to do normal iteration after
 224                                  * seeking to the lo:objid:rectype:key:tid
 225                                  * by default
 226                                  */
 227                                 if (search && search->filter == -1)  /* default */
 228                                         search->filter = 0;
 229                         }
 230                         break;
 231                 default:
 232                         break;
 233                 }
 234         }
 235         rel_buffer(buffer);
 236 }
 237
 238 static __inline
 239 int
 240 is_root_btree_beg(u_int8_t type, int i, hammer_btree_elm_t elm)
 241 {
 242         return (type == HAMMER_BTREE_TYPE_INTERNAL &&
 243                 i == 0 &&
 244                 elm->base.localization == 0 &&
 245                 elm->base.obj_id == (int64_t)-0x8000000000000000LL &&
 246                 elm->base.key == (int64_t)-0x8000000000000000LL &&
 247                 elm->base.create_tid == 1 &&
 248                 elm->base.delete_tid == 1 &&
 249                 elm->base.rec_type == 0 &&
 250                 elm->base.obj_type == 0 &&
 251                 elm->base.btype != 0);  /* depends on the original node */
 252 }
 253
 254 static __inline
 255 int
 256 is_root_btree_end(u_int8_t type, int i, hammer_btree_elm_t elm)
 257 {
 258         return (type == HAMMER_BTREE_TYPE_INTERNAL &&
 259                 i != 0 &&
 260                 elm->base.localization == 0xFFFFFFFFU &&
 261                 elm->base.obj_id == 0x7FFFFFFFFFFFFFFFLL &&
 262                 elm->base.key == 0x7FFFFFFFFFFFFFFFLL &&
 263                 elm->base.create_tid == 0xFFFFFFFFFFFFFFFFULL &&
 264                 elm->base.delete_tid == 0 &&
 265                 elm->base.rec_type == 0xFFFFU &&
 266                 elm->base.obj_type == 0 &&
 267                 elm->base.btype == 0);  /* not initialized */
 268 }
 269
 270 static
 271 void
 272 print_btree_elm(hammer_btree_elm_t elm, int i, u_int8_t type,
 273                 int flags, const char *label, const char *ext)
 274 {
 275         char flagstr[8] = { 0, '-', '-', '-', '-', '-', '-', 0 };
 276         char deleted;
 277         char rootelm;
 278
 279         flagstr[0] = flags ? 'B' : 'G';
 280         if (flags & FLAG_TOOFARLEFT)
 281                 flagstr[2] = 'L';
 282         if (flags & FLAG_TOOFARRIGHT)
 283                 flagstr[3] = 'R';
 284         if (flags & FLAG_BADTYPE)
 285                 flagstr[4] = 'T';
 286         if (flags & FLAG_BADCHILDPARENT)
 287                 flagstr[5] = 'C';
 288         if (flags & FLAG_BADMIRRORTID)
 289                 flagstr[6] = 'M';
 290
 291         /*
 292          * Check if elm is derived from root split
 293          */
 294         if (is_root_btree_beg(type, i, elm))
 295                 rootelm = '>';
 296         else if (is_root_btree_end(type, i, elm))
 297                 rootelm = '<';
 298         else
 299                 rootelm = ' ';
 300
 301         if (elm->base.delete_tid)
 302                 deleted = 'd';
 303         else
 304                 deleted = ' ';
 305
 306         printf("%s\t%s %2d %c ",
 307                flagstr, label, i,
 308                (elm->base.btype ? elm->base.btype : '?'));
 309         printf("lo=%08x obj=%016jx rt=%02x key=%016jx ot=%02x\n",
 310                elm->base.localization,
 311                (uintmax_t)elm->base.obj_id,
 312                elm->base.rec_type,
 313                (uintmax_t)elm->base.key,
 314                elm->base.obj_type);
 315         printf("\t       %c tids %016jx:%016jx ",
 316                (rootelm == ' ' ? deleted : rootelm),
 317                (uintmax_t)elm->base.create_tid,
 318                (uintmax_t)elm->base.delete_tid);
 319
 320         switch(type) {
 321         case HAMMER_BTREE_TYPE_INTERNAL:
 322                 printf("suboff=%016jx",
 323                        (uintmax_t)elm->internal.subtree_offset);
 324                 if (QuietOpt < 3) {
 325                         printf(" mirror %016jx",
 326                                (uintmax_t)elm->internal.mirror_tid);
 327                 }
 328                 if (ext)
 329                         printf(" %s", ext);
 330                 break;
 331         case HAMMER_BTREE_TYPE_LEAF:
 332                 if (ext)
 333                         printf(" %s", ext);
 334                 switch(elm->base.btype) {
 335                 case HAMMER_BTREE_TYPE_RECORD:
 336                         if (QuietOpt < 3)
 337                                 printf("\n%s\t         ", check_data_crc(elm));
 338                         else
 339                                 printf("\n\t         ");
 340                         printf("dataoff=%016jx/%d",
 341                                (uintmax_t)elm->leaf.data_offset,
 342                                elm->leaf.data_len);
 343                         if (QuietOpt < 3) {
 344                                 printf(" crc=%04x", elm->leaf.data_crc);
 345                                 printf("\n\t         fills=");
 346                                 print_bigblock_fill(elm->leaf.data_offset);
 347                         }
 348                         if (QuietOpt < 2)
 349                                 print_record(elm);
 350                         break;
 351                 }
 352                 break;
 353         default:
 354                 break;
 355         }
 356         printf("\n");
 357 }
 358
 359 static
 360 int
 361 get_elm_flags(hammer_node_ondisk_t node, hammer_off_t node_offset,
 362                 hammer_btree_elm_t elm, u_int8_t btype,
 363                 hammer_base_elm_t left_bound, hammer_base_elm_t right_bound)
 364 {
 365         int flags = 0;
 366
 367         switch(node->type) {
 368         case HAMMER_BTREE_TYPE_INTERNAL:
 369                 if (elm->internal.subtree_offset) {
 370                         struct buffer_info *buffer = NULL;
 371                         hammer_node_ondisk_t subnode;
 372
 373                         subnode = get_node(elm->internal.subtree_offset,
 374                                            &buffer);
 375                         if (subnode == NULL)
 376                                 flags |= FLAG_BADCHILDPARENT;
 377                         else if (subnode->parent != node_offset)
 378                                 flags |= FLAG_BADCHILDPARENT;
 379                         rel_buffer(buffer);
 380                 }
 381                 if (elm->internal.mirror_tid > node->mirror_tid)
 382                         flags |= FLAG_BADMIRRORTID;
 383
 384                 switch(btype) {
 385                 case HAMMER_BTREE_TYPE_INTERNAL:
 386                         if (left_bound == NULL || right_bound == NULL)
 387                                 break;
 388                         if (hammer_btree_cmp(&elm->base, left_bound) < 0)
 389                                 flags |= FLAG_TOOFARLEFT;
 390                         if (hammer_btree_cmp(&elm->base, right_bound) > 0)
 391                                 flags |= FLAG_TOOFARRIGHT;
 392                         break;
 393                 case HAMMER_BTREE_TYPE_LEAF:
 394                         if (left_bound == NULL || right_bound == NULL)
 395                                 break;
 396                         if (hammer_btree_cmp(&elm->base, left_bound) < 0)
 397                                 flags |= FLAG_TOOFARLEFT;
 398                         if (hammer_btree_cmp(&elm->base, right_bound) >= 0)
 399                                 flags |= FLAG_TOOFARRIGHT;
 400                         break;
 401                 default:
 402                         flags |= FLAG_BADTYPE;
 403                         break;
 404                 }
 405                 break;
 406         case HAMMER_BTREE_TYPE_LEAF:
 407                 if (node->mirror_tid == 0 &&
 408                     !(node->parent == 0 && node->count == 2)) {
 409                         flags |= FLAG_BADMIRRORTID;
 410                 }
 411                 if (elm->base.create_tid && node->mirror_tid &&
 412                     elm->base.create_tid > node->mirror_tid) {
 413                         flags |= FLAG_BADMIRRORTID;
 414                 }
 415                 if (elm->base.delete_tid && node->mirror_tid &&
 416                     elm->base.delete_tid > node->mirror_tid) {
 417                         flags |= FLAG_BADMIRRORTID;
 418                 }
 419                 switch(btype) {
 420                 case HAMMER_BTREE_TYPE_RECORD:
 421                         if (left_bound == NULL || right_bound == NULL)
 422                                 break;
 423                         if (hammer_btree_cmp(&elm->base, left_bound) < 0)
 424                                 flags |= FLAG_TOOFARLEFT;
 425                         if (hammer_btree_cmp(&elm->base, right_bound) >= 0)
 426                                 flags |= FLAG_TOOFARRIGHT;
 427                         break;
 428                 default:
 429                         flags |= FLAG_BADTYPE;
 430                         break;
 431                 }
 432                 break;
 433         default:
 434                 flags |= FLAG_BADTYPE;
 435                 break;
 436         }
 437         return(flags);
 438 }
 439
 440 static
 441 void
 442 print_bigblock_fill(hammer_off_t offset)
 443 {
 444         struct hammer_blockmap_layer1 layer1;
 445         struct hammer_blockmap_layer2 layer2;
 446         int fill;
 447         int error;
 448
 449         blockmap_lookup(offset, &layer1, &layer2, &error);
 450         if (error) {
 451                 printf("z%d:%lld=BADZ",
 452                         HAMMER_ZONE_DECODE(offset),
 453                         (offset & ~HAMMER_OFF_ZONE_MASK) /
 454                             HAMMER_BIGBLOCK_SIZE
 455                 );
 456         } else {
 457                 fill = layer2.bytes_free * 100 / HAMMER_BIGBLOCK_SIZE;
 458                 fill = 100 - fill;
 459
 460                 printf("z%d:%lld=%d%%",
 461                         HAMMER_ZONE_DECODE(offset),
 462                         (offset & ~HAMMER_OFF_ZONE_MASK) /
 463                             HAMMER_BIGBLOCK_SIZE,
 464                         fill
 465                 );
 466         }
 467 }
 468
 469 /*
 470  * Check the generic crc on a data element.  Inodes record types are
 471  * special in that some of their fields are not CRCed.
 472  *
 473  * Also check that the zone is valid.
 474  */
 475 static
 476 const char *
 477 check_data_crc(hammer_btree_elm_t elm)
 478 {
 479         struct buffer_info *data_buffer;
 480         hammer_off_t data_offset;
 481         int32_t data_len;
 482         int32_t len;
 483         u_int32_t crc;
 484         int error;
 485         char *ptr;
 486
 487         data_offset = elm->leaf.data_offset;
 488         data_len = elm->leaf.data_len;
 489         data_buffer = NULL;
 490         if (data_offset == 0 || data_len == 0)
 491                 return("Z");
 492
 493         crc = 0;
 494         error = 0;
 495         while (data_len) {
 496                 blockmap_lookup(data_offset, NULL, NULL, &error);
 497                 if (error)
 498                         break;
 499
 500                 ptr = get_buffer_data(data_offset, &data_buffer, 0);
 501                 len = HAMMER_BUFSIZE - ((int)data_offset & HAMMER_BUFMASK);
 502                 if (len > data_len)
 503                         len = (int)data_len;
 504                 if (elm->leaf.base.rec_type == HAMMER_RECTYPE_INODE &&
 505                     data_len == sizeof(struct hammer_inode_data)) {
 506                         crc = crc32_ext(ptr, HAMMER_INODE_CRCSIZE, crc);
 507                 } else {
 508                         crc = crc32_ext(ptr, len, crc);
 509                 }
 510                 data_len -= len;
 511                 data_offset += len;
 512         }
 513         rel_buffer(data_buffer);
 514         if (error) {
 515                 switch (error) {        /* bad offset */
 516                 case -1:
 517                         return("BO-ZL");
 518                 case -2:
 519                         return("BO-ZG");
 520                 case -3:
 521                         return("BO-RV");
 522                 case -4:
 523                         return("BO-AO");
 524                 case -5:
 525                         return("BO-DE");
 526                 case -6:
 527                         return("BO-L1");
 528                 case -7:
 529                         return("BO-LU");
 530                 case -8:
 531                         return("BO-L2");
 532                 case -9:
 533                         return("BO-LZ");
 534                 default:
 535                         return("BO-??");
 536                 }
 537         }
 538         if (crc == elm->leaf.data_crc)
 539                 return("");
 540         return("BX");                   /* bad crc */
 541 }
 542
 543 static
 544 void
 545 print_config(char *cfgtxt)
 546 {
 547         char *token;
 548
 549         printf("\n%17stext=\"\n", "");
 550         while((token = strsep(&cfgtxt, "\r\n")) != NULL) {
 551                 printf("%17s  %s\n", "", token);
 552         }
 553         printf("%17s\"", "");
 554 }
 555
 556 static
 557 void
 558 print_record(hammer_btree_elm_t elm)
 559 {
 560         struct buffer_info *data_buffer;
 561         hammer_off_t data_offset;
 562         int32_t data_len;
 563         hammer_data_ondisk_t data;
 564         u_int32_t status;
 565         char *str1 = NULL;
 566         char *str2 = NULL;
 567
 568         data_offset = elm->leaf.data_offset;
 569         data_len = elm->leaf.data_len;
 570         data_buffer = NULL;
 571
 572         if (data_offset)
 573                 data = get_buffer_data(data_offset, &data_buffer, 0);
 574         else
 575                 data = NULL;
 576
 577         switch(elm->leaf.base.rec_type) {
 578         case HAMMER_RECTYPE_UNKNOWN:
 579                 printf("\n%17s", "");
 580                 printf("unknown");
 581                 break;
 582         case HAMMER_RECTYPE_INODE:
 583                 printf("\n%17s", "");
 584                 printf("size=%jd nlinks=%jd",
 585                        (intmax_t)data->inode.size,
 586                        (intmax_t)data->inode.nlinks);
 587                 if (QuietOpt < 1) {
 588                         printf(" mode=%05o uflags=%08x\n",
 589                                 data->inode.mode,
 590                                 data->inode.uflags);
 591                         printf("%17s", "");
 592                         printf("ctime=%016jx pobjid=%016jx obj_type=%d\n",
 593                                 (uintmax_t)data->inode.ctime,
 594                                 (uintmax_t)data->inode.parent_obj_id,
 595                                 data->inode.obj_type);
 596                         printf("%17s", "");
 597                         printf("mtime=%016jx", (uintmax_t)data->inode.mtime);
 598                         printf(" caps=%02x", data->inode.cap_flags);
 599                 }
 600                 break;
 601         case HAMMER_RECTYPE_DIRENTRY:
 602                 printf("\n%17s", "");
 603                 data_len -= HAMMER_ENTRY_NAME_OFF;
 604                 printf("dir-entry ino=%016jx lo=%08x name=\"%*.*s\"",
 605                        (uintmax_t)data->entry.obj_id,
 606                        data->entry.localization,
 607                        data_len, data_len, data->entry.name);
 608                 break;
 609         case HAMMER_RECTYPE_FIX:
 610                 switch(elm->leaf.base.key) {
 611                 case HAMMER_FIXKEY_SYMLINK:
 612                         data_len -= HAMMER_SYMLINK_NAME_OFF;
 613                         printf("\n%17s", "");
 614                         printf("symlink=\"%*.*s\"", data_len, data_len,
 615                                 data->symlink.name);
 616                         break;
 617                 default:
 618                         break;
 619                 }
 620                 break;
 621         case HAMMER_RECTYPE_PFS:
 622                 printf("\n%17s", "");
 623                 printf("sync_beg_tid=%016jx sync_end_tid=%016jx\n",
 624                         (intmax_t)data->pfsd.sync_beg_tid,
 625                         (intmax_t)data->pfsd.sync_end_tid);
 626                 uuid_to_string(&data->pfsd.shared_uuid, &str1, &status);
 627                 uuid_to_string(&data->pfsd.unique_uuid, &str2, &status);
 628                 printf("%17s", "");
 629                 printf("shared_uuid=%s\n", str1);
 630                 printf("%17s", "");
 631                 printf("unique_uuid=%s\n", str2);
 632                 printf("%17s", "");
 633                 printf("mirror_flags=%08x label=\"%s\"",
 634                         data->pfsd.mirror_flags, data->pfsd.label);
 635                 if (data->pfsd.snapshots[0])
 636                         printf(" snapshots=\"%s\"", data->pfsd.snapshots);
 637                 free(str1);
 638                 free(str2);
 639                 break;
 640         case HAMMER_RECTYPE_SNAPSHOT:
 641                 printf("\n%17s", "");
 642                 printf("tid=%016jx label=\"%s\"",
 643                         (intmax_t)data->snap.tid, data->snap.label);
 644                 break;
 645         case HAMMER_RECTYPE_CONFIG:
 646                 if (VerboseOpt > 2) {
 647                         print_config(data->config.text);
 648                 }
 649                 break;
 650         case HAMMER_RECTYPE_DATA:
 651                 if (VerboseOpt > 3) {
 652                         printf("\n");
 653                         hexdump(data, data_len, "\t\t  ", 0);
 654                 }
 655                 break;
 656         case HAMMER_RECTYPE_EXT:
 657         case HAMMER_RECTYPE_DB:
 658                 if (VerboseOpt > 2) {
 659                         printf("\n");
 660                         hexdump(data, data_len, "\t\t  ", 0);
 661                 }
 662                 break;
 663         default:
 664                 break;
 665         }
 666         rel_buffer(data_buffer);
 667 }
 668
 669 static __inline
 670 unsigned long
 671 _strtoul(const char *p, int base)
 672 {
 673         unsigned long retval;
 674
 675         errno = 0;  /* clear */
 676         retval = strtoul(p, NULL, base);
 677         if (errno == ERANGE && retval == ULONG_MAX)
 678                 err(1, "strtoul");
 679         return retval;
 680 }
 681
 682 static __inline
 683 unsigned long long
 684 _strtoull(const char *p, int base)
 685 {
 686         unsigned long long retval;
 687
 688         errno = 0;  /* clear */
 689         retval = strtoull(p, NULL, base);
 690         if (errno == ERANGE && retval == ULLONG_MAX)
 691                 err(1, "strtoull");
 692         return retval;
 693 }
 694
 695 static int
 696 init_btree_search(const char *arg, int filter, btree_search_t search)
 697 {
 698         char *s, *p;
 699         int i = 0;
 700
 701         search->lo = 0;
 702         search->obj_id = (int64_t)HAMMER_MIN_OBJID;
 703         search->rec_type = HAMMER_RECTYPE_LOWEST;
 704         search->key = 0;
 705         search->create_tid = 0;
 706         search->limit = 0;
 707         search->filter = filter;
 708
 709         s = strdup(arg);
 710         if (s == NULL)
 711                 return(-1);
 712
 713         while ((p = s) != NULL) {
 714                 if ((s = strchr(s, ':')) != NULL)
 715                         *s++ = 0;
 716                 if (++i == 1) {
 717                         search->lo = _strtoul(p, 16);
 718                 } else if (i == 2) {
 719                         search->obj_id = _strtoull(p, 16);
 720                 } else if (i == 3) {
 721                         search->rec_type = _strtoul(p, 16);
 722                 } else if (i == 4) {
 723                         search->key = _strtoull(p, 16);
 724                 } else if (i == 5) {
 725                         search->create_tid = _strtoull(p, 16);
 726                         break;
 727                 }
 728         }
 729         search->limit = i;
 730         free(s);
 731         return(i);
 732 }
 733
 734 static int
 735 test_btree_search(hammer_btree_elm_t elm, btree_search_t search)
 736 {
 737         hammer_base_elm_t base = &elm->base;
 738         assert(search);
 739
 740         if (base->localization < search->lo)
 741                 return(-1);
 742         if (base->localization > search->lo)
 743                 return(1);
 744         /* fall through */
 745
 746         if (base->obj_id < search->obj_id)
 747                 return(-2);
 748         if (base->obj_id > search->obj_id)
 749                 return(2);
 750         if (search->limit == 2)
 751                 return(0);  /* ignore below */
 752
 753         if (base->rec_type < search->rec_type)
 754                 return(-3);
 755         if (base->rec_type > search->rec_type)
 756                 return(3);
 757         if (search->limit == 3)
 758                 return(0);  /* ignore below */
 759
 760         if (base->key < search->key)
 761                 return(-4);
 762         if (base->key > search->key)
 763                 return(4);
 764         if (search->limit == 4)
 765                 return(0);  /* ignore below */
 766
 767         if (base->create_tid == 0) {
 768                 if (search->create_tid == 0)
 769                         return(0);
 770                 return(5);
 771         }
 772         if (search->create_tid == 0)
 773                 return(-5);
 774         if (base->create_tid < search->create_tid)
 775                 return(-5);
 776         if (base->create_tid > search->create_tid)
 777                 return(5);
 778         return(0);
 779 }
 780
 781 /*
 782  * Dump the UNDO FIFO
 783  */
 784 void
 785 hammer_cmd_show_undo(void)
 786 {
 787         struct volume_info *volume;
 788         hammer_blockmap_t rootmap;
 789         hammer_off_t scan_offset;
 790         hammer_fifo_any_t head;
 791         struct buffer_info *data_buffer = NULL;
 792
 793         volume = get_volume(RootVolNo);
 794         rootmap = &volume->ondisk->vol0_blockmap[HAMMER_ZONE_UNDO_INDEX];
 795         printf("Volume header UNDO %016jx-%016jx/%016jx\n",
 796                 (intmax_t)rootmap->first_offset,
 797                 (intmax_t)rootmap->next_offset,
 798                 (intmax_t)rootmap->alloc_offset);
 799         printf("Undo map is %jdMB\n",
 800                 (intmax_t)((rootmap->alloc_offset & HAMMER_OFF_LONG_MASK) /
 801                            (1024 * 1024)));
 802         scan_offset = HAMMER_ZONE_ENCODE(HAMMER_ZONE_UNDO_INDEX, 0);
 803         while (scan_offset < rootmap->alloc_offset) {
 804                 head = get_buffer_data(scan_offset, &data_buffer, 0);
 805                 printf("%016jx ", scan_offset);
 806
 807                 switch(head->head.hdr_type) {
 808                 case HAMMER_HEAD_TYPE_PAD:
 809                         printf("PAD(%04x)\n", head->head.hdr_size);
 810                         break;
 811                 case HAMMER_HEAD_TYPE_DUMMY:
 812                         printf("DUMMY(%04x) seq=%08x\n",
 813                                 head->head.hdr_size, head->head.hdr_seq);
 814                         break;
 815                 case HAMMER_HEAD_TYPE_UNDO:
 816                         printf("UNDO(%04x) seq=%08x "
 817                                "dataoff=%016jx bytes=%d\n",
 818                                 head->head.hdr_size, head->head.hdr_seq,
 819                                 (intmax_t)head->undo.undo_offset,
 820                                 head->undo.undo_data_bytes);
 821                         break;
 822                 case HAMMER_HEAD_TYPE_REDO:
 823                         printf("REDO(%04x) seq=%08x flags=%08x "
 824                                "objid=%016jx logoff=%016jx bytes=%d\n",
 825                                 head->head.hdr_size, head->head.hdr_seq,
 826                                 head->redo.redo_flags,
 827                                 (intmax_t)head->redo.redo_objid,
 828                                 (intmax_t)head->redo.redo_offset,
 829                                 head->redo.redo_data_bytes);
 830                         break;
 831                 default:
 832                         printf("UNKNOWN(%04x,%04x) seq=%08x\n",
 833                                 head->head.hdr_type,
 834                                 head->head.hdr_size,
 835                                 head->head.hdr_seq);
 836                         break;
 837                 }
 838                 if ((head->head.hdr_size & HAMMER_HEAD_ALIGN_MASK) ||
 839                     head->head.hdr_size == 0 ||
 840                     head->head.hdr_size > HAMMER_UNDO_ALIGN -
 841                                     ((u_int)scan_offset & HAMMER_UNDO_MASK)) {
 842                         printf("Illegal size field, skipping to "
 843                                "next boundary\n");
 844                         scan_offset = (scan_offset + HAMMER_UNDO_MASK) &
 845                                         ~HAMMER_UNDO_MASK64;
 846                 } else {
 847                         scan_offset += head->head.hdr_size;
 848                 }
 849         }
 850         rel_buffer(data_buffer);
 851 }