src/solverdebug.c

   1 /*
   2  * Copyright (c) 2008, Novell Inc.
   3  *
   4  * This program is licensed under the BSD license, read LICENSE.BSD
   5  * for further information
   6  */
   7
   8 /*
   9  * solverdebug.c
  10  *
  11  * debug functions for the SAT solver
  12  */
  13
  14 #include <stdio.h>
  15 #include <stdlib.h>
  16 #include <unistd.h>
  17 #include <string.h>
  18 #include <assert.h>
  19
  20 #include "solver.h"
  21 #include "solverdebug.h"
  22 #include "bitmap.h"
  23 #include "pool.h"
  24 #include "poolarch.h"
  25 #include "util.h"
  26 #include "evr.h"
  27 #include "policy.h"
  28
  29
  30 /*
  31  * create obsoletesmap from solver decisions
  32  *
  33  * for solvables in installed repo:
  34  *   0 - not obsoleted
  35  *   p - one of the packages that obsolete us
  36  * for all others:
  37  *   n - number of packages this package obsoletes
  38  *
  39  */
  40
  41 /* OBSOLETE: use transaction code instead! */
  42
  43 Id *
  44 solver_create_decisions_obsoletesmap(Solver *solv)
  45 {
  46   Pool *pool = solv->pool;
  47   Repo *installed = solv->installed;
  48   Id p, *obsoletesmap = NULL;
  49   int i;
  50   Solvable *s;
  51
  52   obsoletesmap = (Id *)sat_calloc(pool->nsolvables, sizeof(Id));
  53   if (installed)
  54     {
  55       for (i = 0; i < solv->decisionq.count; i++)
  56         {
  57           Id pp, n;
  58           int noobs;
  59
  60           n = solv->decisionq.elements[i];
  61           if (n < 0)
  62             continue;
  63           if (n == SYSTEMSOLVABLE)
  64             continue;
  65           s = pool->solvables + n;
  66           if (s->repo == installed)             /* obsoletes don't count for already installed packages */
  67             continue;
  68           noobs = solv->noobsoletes.size && MAPTST(&solv->noobsoletes, n);
  69           FOR_PROVIDES(p, pp, s->name)
  70             {
  71               Solvable *ps = pool->solvables + p;
  72               if (noobs && (s->name != ps->name || s->evr != ps->evr || s->arch != ps->arch))
  73                 continue;
  74               if (!pool->implicitobsoleteusesprovides && s->name != ps->name)
  75                 continue;
  76               if (pool->obsoleteusescolors && !pool_colormatch(pool, s, ps))
  77                 continue;
  78               if (ps->repo == installed && !obsoletesmap[p])
  79                 {
  80                   obsoletesmap[p] = n;
  81                   obsoletesmap[n]++;
  82                 }
  83             }
  84         }
  85       for (i = 0; i < solv->decisionq.count; i++)
  86         {
  87           Id obs, *obsp;
  88           Id pp, n;
  89
  90           n = solv->decisionq.elements[i];
  91           if (n < 0)
  92             continue;
  93           if (n == SYSTEMSOLVABLE)
  94             continue;
  95           s = pool->solvables + n;
  96           if (s->repo == installed)             /* obsoletes don't count for already installed packages */
  97             continue;
  98           if (!s->obsoletes)
  99             continue;
 100           if (solv->noobsoletes.size && MAPTST(&solv->noobsoletes, n))
 101             continue;
 102           obsp = s->repo->idarraydata + s->obsoletes;
 103           while ((obs = *obsp++) != 0)
 104             {
 105               FOR_PROVIDES(p, pp, obs)
 106                 {
 107                   Solvable *ps = pool->solvables + p;
 108                   if (!pool->obsoleteusesprovides && !pool_match_nevr(pool, ps, obs))
 109                     continue;
 110                   if (pool->obsoleteusescolors && !pool_colormatch(pool, s, ps))
 111                     continue;
 112                   if (pool->solvables[p].repo == installed && !obsoletesmap[p])
 113                     {
 114                       obsoletesmap[p] = n;
 115                       obsoletesmap[n]++;
 116                     }
 117                 }
 118             }
 119         }
 120     }
 121   return obsoletesmap;
 122 }
 123
 124 void
 125 solver_printruleelement(Solver *solv, int type, Rule *r, Id v)
 126 {
 127   Pool *pool = solv->pool;
 128   Solvable *s;
 129   if (v < 0)
 130     {
 131       s = pool->solvables + -v;
 132       POOL_DEBUG(type, "    !%s [%d]", pool_solvable2str(pool, s), -v);
 133     }
 134   else
 135     {
 136       s = pool->solvables + v;
 137       POOL_DEBUG(type, "    %s [%d]", pool_solvable2str(pool, s), v);
 138     }
 139   if (pool->installed && s->repo == pool->installed)
 140     POOL_DEBUG(type, "I");
 141   if (r)
 142     {
 143       if (r->w1 == v)
 144         POOL_DEBUG(type, " (w1)");
 145       if (r->w2 == v)
 146         POOL_DEBUG(type, " (w2)");
 147     }
 148   if (solv->decisionmap[s - pool->solvables] > 0)
 149     POOL_DEBUG(type, " Install.level%d", solv->decisionmap[s - pool->solvables]);
 150   if (solv->decisionmap[s - pool->solvables] < 0)
 151     POOL_DEBUG(type, " Conflict.level%d", -solv->decisionmap[s - pool->solvables]);
 152   POOL_DEBUG(type, "\n");
 153 }
 154
 155
 156 /*
 157  * print rule
 158  */
 159
 160 void
 161 solver_printrule(Solver *solv, int type, Rule *r)
 162 {
 163   Pool *pool = solv->pool;
 164   int i;
 165   Id d, v;
 166
 167   if (r >= solv->rules && r < solv->rules + solv->nrules)   /* r is a solver rule */
 168     POOL_DEBUG(type, "Rule #%d:", (int)(r - solv->rules));
 169   else
 170     POOL_DEBUG(type, "Rule:");                 /* r is any rule */
 171   if (r && r->d < 0)
 172     POOL_DEBUG(type, " (disabled)");
 173   POOL_DEBUG(type, "\n");
 174   d = r->d < 0 ? -r->d - 1 : r->d;
 175   for (i = 0; ; i++)
 176     {
 177       if (i == 0)
 178           /* print direct literal */
 179         v = r->p;
 180       else if (!d)
 181         {
 182           if (i == 2)
 183             break;
 184           /* binary rule --> print w2 as second literal */
 185           v = r->w2;
 186         }
 187       else
 188           /* every other which is in d */
 189         v = solv->pool->whatprovidesdata[d + i - 1];
 190       if (v == ID_NULL)
 191         break;
 192       solver_printruleelement(solv, type, r, v);
 193     }
 194   POOL_DEBUG(type, "    next rules: %d %d\n", r->n1, r->n2);
 195 }
 196
 197 void
 198 solver_printruleclass(Solver *solv, int type, Rule *r)
 199 {
 200   Pool *pool = solv->pool;
 201   Id p = r - solv->rules;
 202   assert(p >= 0);
 203   if (p < solv->learntrules)
 204     if (MAPTST(&solv->weakrulemap, p))
 205       POOL_DEBUG(type, "WEAK ");
 206   if (solv->learntrules && p >= solv->learntrules)
 207     POOL_DEBUG(type, "LEARNT ");
 208   else if (p >= solv->choicerules && p < solv->choicerules_end)
 209     POOL_DEBUG(type, "CHOICE ");
 210   else if (p >= solv->infarchrules && p < solv->infarchrules_end)
 211     POOL_DEBUG(type, "INFARCH ");
 212   else if (p >= solv->duprules && p < solv->duprules_end)
 213     POOL_DEBUG(type, "DUP ");
 214   else if (p >= solv->jobrules && p < solv->jobrules_end)
 215     POOL_DEBUG(type, "JOB ");
 216   else if (p >= solv->updaterules && p < solv->updaterules_end)
 217     POOL_DEBUG(type, "UPDATE ");
 218   else if (p >= solv->featurerules && p < solv->featurerules_end)
 219     POOL_DEBUG(type, "FEATURE ");
 220   solver_printrule(solv, type, r);
 221 }
 222
 223 void
 224 solver_printproblem(Solver *solv, Id v)
 225 {
 226   Pool *pool = solv->pool;
 227   int i;
 228   Rule *r;
 229   Id *jp;
 230
 231   if (v > 0)
 232     solver_printruleclass(solv, SAT_DEBUG_SOLUTIONS, solv->rules + v);
 233   else
 234     {
 235       v = -(v + 1);
 236       POOL_DEBUG(SAT_DEBUG_SOLUTIONS, "JOB %d\n", v);
 237       jp = solv->ruletojob.elements;
 238       for (i = solv->jobrules, r = solv->rules + i; i < solv->jobrules_end; i++, r++, jp++)
 239         if (*jp == v)
 240           {
 241             POOL_DEBUG(SAT_DEBUG_SOLUTIONS, "- ");
 242             solver_printrule(solv, SAT_DEBUG_SOLUTIONS, r);
 243           }
 244       POOL_DEBUG(SAT_DEBUG_SOLUTIONS, "ENDJOB\n");
 245     }
 246 }
 247
 248 void
 249 solver_printwatches(Solver *solv, int type)
 250 {
 251   Pool *pool = solv->pool;
 252   int counter;
 253
 254   POOL_DEBUG(type, "Watches: \n");
 255   for (counter = -(pool->nsolvables - 1); counter < pool->nsolvables; counter++)
 256     POOL_DEBUG(type, "    solvable [%d] -- rule [%d]\n", counter, solv->watches[counter + pool->nsolvables]);
 257 }
 258
 259 void
 260 solver_printdecisionq(Solver *solv, int type)
 261 {
 262   Pool *pool = solv->pool;
 263   int i;
 264   Id p, why;
 265
 266   POOL_DEBUG(type, "Decisions:\n");
 267   for (i = 0; i < solv->decisionq.count; i++)
 268     {
 269       p = solv->decisionq.elements[i];
 270       if (p > 0)
 271         POOL_DEBUG(type, "%d %d install  %s, ", i, solv->decisionmap[p], pool_solvid2str(pool, p));
 272       else
 273         POOL_DEBUG(type, "%d %d conflict %s, ", i, -solv->decisionmap[-p], pool_solvid2str(pool, -p));
 274       why = solv->decisionq_why.elements[i];
 275       if (why > 0)
 276         {
 277           POOL_DEBUG(type, "forced by ");
 278           solver_printruleclass(solv, type, solv->rules + why);
 279         }
 280       else if (why < 0)
 281         {
 282           POOL_DEBUG(type, "chosen from ");
 283           solver_printruleclass(solv, type, solv->rules - why);
 284         }
 285       else
 286         POOL_DEBUG(type, "picked for some unknown reason.\n");
 287     }
 288 }
 289
 290 /*
 291  * printdecisions
 292  */
 293
 294 void
 295 solver_printdecisions(Solver *solv)
 296 {
 297   Pool *pool = solv->pool;
 298   Repo *installed = solv->installed;
 299   Id p, type;
 300   int i, j;
 301   Solvable *s;
 302   Queue iq;
 303
 304   IF_POOLDEBUG (SAT_DEBUG_SCHUBI)
 305     {
 306       POOL_DEBUG(SAT_DEBUG_SCHUBI, "----- Decisions -----\n");
 307       for (i = 0; i < solv->decisionq.count; i++)
 308         {
 309           p = solv->decisionq.elements[i];
 310           solver_printruleelement(solv, SAT_DEBUG_SCHUBI, 0, p);
 311         }
 312       POOL_DEBUG(SAT_DEBUG_SCHUBI, "----- Decisions end -----\n");
 313     }
 314
 315   POOL_DEBUG(SAT_DEBUG_RESULT, "\n");
 316   POOL_DEBUG(SAT_DEBUG_RESULT, "transaction:\n");
 317
 318   queue_init(&iq);
 319   for (i = 0; i < solv->trans.steps.count; i++)
 320     {
 321       p = solv->trans.steps.elements[i];
 322       s = pool->solvables + p;
 323       type = transaction_type(&solv->trans, p, SOLVER_TRANSACTION_SHOW_ACTIVE|SOLVER_TRANSACTION_SHOW_ALL|SOLVER_TRANSACTION_SHOW_OBSOLETES|SOLVER_TRANSACTION_SHOW_MULTIINSTALL);
 324       switch(type)
 325         {
 326         case SOLVER_TRANSACTION_MULTIINSTALL:
 327           POOL_DEBUG(SAT_DEBUG_RESULT, "  multi install %s", pool_solvable2str(pool, s));
 328           break;
 329         case SOLVER_TRANSACTION_MULTIREINSTALL:
 330           POOL_DEBUG(SAT_DEBUG_RESULT, "  multi reinstall %s", pool_solvable2str(pool, s));
 331           break;
 332         case SOLVER_TRANSACTION_INSTALL:
 333           POOL_DEBUG(SAT_DEBUG_RESULT, "  install   %s", pool_solvable2str(pool, s));
 334           break;
 335         case SOLVER_TRANSACTION_REINSTALL:
 336           POOL_DEBUG(SAT_DEBUG_RESULT, "  reinstall %s", pool_solvable2str(pool, s));
 337           break;
 338         case SOLVER_TRANSACTION_DOWNGRADE:
 339           POOL_DEBUG(SAT_DEBUG_RESULT, "  downgrade %s", pool_solvable2str(pool, s));
 340           break;
 341         case SOLVER_TRANSACTION_CHANGE:
 342           POOL_DEBUG(SAT_DEBUG_RESULT, "  change    %s", pool_solvable2str(pool, s));
 343           break;
 344         case SOLVER_TRANSACTION_UPGRADE:
 345         case SOLVER_TRANSACTION_OBSOLETES:
 346           POOL_DEBUG(SAT_DEBUG_RESULT, "  upgrade   %s", pool_solvable2str(pool, s));
 347           break;
 348         case SOLVER_TRANSACTION_ERASE:
 349           POOL_DEBUG(SAT_DEBUG_RESULT, "  erase     %s", pool_solvable2str(pool, s));
 350           break;
 351         default:
 352           break;
 353         }
 354       switch(type)
 355         {
 356         case SOLVER_TRANSACTION_INSTALL:
 357         case SOLVER_TRANSACTION_ERASE:
 358         case SOLVER_TRANSACTION_MULTIINSTALL:
 359         case SOLVER_TRANSACTION_MULTIREINSTALL:
 360           POOL_DEBUG(SAT_DEBUG_RESULT, "\n");
 361           break;
 362         case SOLVER_TRANSACTION_REINSTALL:
 363         case SOLVER_TRANSACTION_DOWNGRADE:
 364         case SOLVER_TRANSACTION_CHANGE:
 365         case SOLVER_TRANSACTION_UPGRADE:
 366         case SOLVER_TRANSACTION_OBSOLETES:
 367           transaction_all_obs_pkgs(&solv->trans, p, &iq);
 368           if (iq.count)
 369             {
 370               POOL_DEBUG(SAT_DEBUG_RESULT, "  (obsoletes");
 371               for (j = 0; j < iq.count; j++)
 372                 POOL_DEBUG(SAT_DEBUG_RESULT, " %s", pool_solvid2str(pool, iq.elements[j]));
 373               POOL_DEBUG(SAT_DEBUG_RESULT, ")");
 374             }
 375           POOL_DEBUG(SAT_DEBUG_RESULT, "\n");
 376           break;
 377         default:
 378           break;
 379         }
 380     }
 381   queue_free(&iq);
 382
 383   POOL_DEBUG(SAT_DEBUG_RESULT, "\n");
 384
 385   if (solv->recommendations.count)
 386     {
 387       POOL_DEBUG(SAT_DEBUG_RESULT, "recommended packages:\n");
 388       for (i = 0; i < solv->recommendations.count; i++)
 389         {
 390           s = pool->solvables + solv->recommendations.elements[i];
 391           if (solv->decisionmap[solv->recommendations.elements[i]] > 0)
 392             {
 393               if (installed && s->repo == installed)
 394                 POOL_DEBUG(SAT_DEBUG_RESULT, "  %s (installed)\n", pool_solvable2str(pool, s));
 395               else
 396                 POOL_DEBUG(SAT_DEBUG_RESULT, "  %s (selected)\n", pool_solvable2str(pool, s));
 397             }
 398           else
 399             POOL_DEBUG(SAT_DEBUG_RESULT, "  %s\n", pool_solvable2str(pool, s));
 400         }
 401       POOL_DEBUG(SAT_DEBUG_RESULT, "\n");
 402     }
 403
 404   if (solv->suggestions.count)
 405     {
 406       POOL_DEBUG(SAT_DEBUG_RESULT, "suggested packages:\n");
 407       for (i = 0; i < solv->suggestions.count; i++)
 408         {
 409           s = pool->solvables + solv->suggestions.elements[i];
 410           if (solv->decisionmap[solv->suggestions.elements[i]] > 0)
 411             {
 412               if (installed && s->repo == installed)
 413                 POOL_DEBUG(SAT_DEBUG_RESULT, "  %s (installed)\n", pool_solvable2str(pool, s));
 414               else
 415                 POOL_DEBUG(SAT_DEBUG_RESULT, "  %s (selected)\n", pool_solvable2str(pool, s));
 416             }
 417           else
 418             POOL_DEBUG(SAT_DEBUG_RESULT, "  %s\n", pool_solvable2str(pool, s));
 419         }
 420       POOL_DEBUG(SAT_DEBUG_RESULT, "\n");
 421     }
 422   if (solv->orphaned.count)
 423     {
 424       POOL_DEBUG(SAT_DEBUG_RESULT, "orphaned packages:\n");
 425       for (i = 0; i < solv->orphaned.count; i++)
 426         {
 427           s = pool->solvables + solv->orphaned.elements[i];
 428           if (solv->decisionmap[solv->orphaned.elements[i]] > 0)
 429             POOL_DEBUG(SAT_DEBUG_RESULT, "  %s (kept)\n", pool_solvable2str(pool, s));
 430           else
 431             POOL_DEBUG(SAT_DEBUG_RESULT, "  %s (erased)\n", pool_solvable2str(pool, s));
 432         }
 433       POOL_DEBUG(SAT_DEBUG_RESULT, "\n");
 434     }
 435 }
 436
 437 static inline
 438 const char *id2strnone(Pool *pool, Id id)
 439 {
 440   return !id || id == 1 ? "(none)" : pool_id2str(pool, id);
 441 }
 442
 443 void
 444 solver_printtransaction(Solver *solv)
 445 {
 446   Transaction *trans = &solv->trans;
 447   Pool *pool = trans->pool;
 448   Queue classes, pkgs;
 449   int i, j, mode, l, linel;
 450   char line[76];
 451   const char *n;
 452
 453   queue_init(&classes);
 454   queue_init(&pkgs);
 455   mode = 0;
 456   transaction_classify(trans, mode, &classes);
 457   for (i = 0; i < classes.count; i += 4)
 458     {
 459       Id class = classes.elements[i];
 460       Id cnt = classes.elements[i + 1];
 461       switch(class)
 462         {
 463         case SOLVER_TRANSACTION_ERASE:
 464           POOL_DEBUG(SAT_DEBUG_RESULT, "%d erased packages:\n", cnt);
 465           break;
 466         case SOLVER_TRANSACTION_INSTALL:
 467           POOL_DEBUG(SAT_DEBUG_RESULT, "%d installed packages:\n", cnt);
 468           break;
 469         case SOLVER_TRANSACTION_REINSTALLED:
 470           POOL_DEBUG(SAT_DEBUG_RESULT, "%d reinstalled packages:\n", cnt);
 471           break;
 472         case SOLVER_TRANSACTION_DOWNGRADED:
 473           POOL_DEBUG(SAT_DEBUG_RESULT, "%d downgraded packages:\n", cnt);
 474           break;
 475         case SOLVER_TRANSACTION_CHANGED:
 476           POOL_DEBUG(SAT_DEBUG_RESULT, "%d changed packages:\n", cnt);
 477           break;
 478         case SOLVER_TRANSACTION_UPGRADED:
 479           POOL_DEBUG(SAT_DEBUG_RESULT, "%d upgraded packages:\n", cnt);
 480           break;
 481         case SOLVER_TRANSACTION_VENDORCHANGE:
 482           POOL_DEBUG(SAT_DEBUG_RESULT, "%d vendor changes from '%s' to '%s':\n", cnt, id2strnone(pool, classes.elements[i + 2]), id2strnone(pool, classes.elements[i + 3]));
 483           break;
 484         case SOLVER_TRANSACTION_ARCHCHANGE:
 485           POOL_DEBUG(SAT_DEBUG_RESULT, "%d arch changes from %s to %s:\n", cnt, pool_id2str(pool, classes.elements[i + 2]), pool_id2str(pool, classes.elements[i + 3]));
 486           break;
 487         default:
 488           class = SOLVER_TRANSACTION_IGNORE;
 489           break;
 490         }
 491       if (class == SOLVER_TRANSACTION_IGNORE)
 492         continue;
 493       transaction_classify_pkgs(trans, mode, class, classes.elements[i + 2], classes.elements[i + 3], &pkgs);
 494       *line = 0;
 495       linel = 0;
 496       for (j = 0; j < pkgs.count; j++)
 497         {
 498           Id p = pkgs.elements[j];
 499           Solvable *s = pool->solvables + p;
 500           Solvable *s2;
 501
 502           switch(class)
 503             {
 504             case SOLVER_TRANSACTION_DOWNGRADED:
 505             case SOLVER_TRANSACTION_UPGRADED:
 506               s2 = pool->solvables + transaction_obs_pkg(trans, p);
 507               POOL_DEBUG(SAT_DEBUG_RESULT, "  - %s -> %s\n", pool_solvable2str(pool, s), pool_solvable2str(pool, s2));
 508               break;
 509             case SOLVER_TRANSACTION_VENDORCHANGE:
 510             case SOLVER_TRANSACTION_ARCHCHANGE:
 511               n = pool_id2str(pool, s->name);
 512               l = strlen(n);
 513               if (l + linel > sizeof(line) - 3)
 514                 {
 515                   if (*line)
 516                     POOL_DEBUG(SAT_DEBUG_RESULT, "    %s\n", line);
 517                   *line = 0;
 518                   linel = 0;
 519                 }
 520               if (l + linel > sizeof(line) - 3)
 521                 POOL_DEBUG(SAT_DEBUG_RESULT, "    %s\n", n);
 522               else
 523                 {
 524                   if (*line)
 525                     {
 526                       strcpy(line + linel, ", ");
 527                       linel += 2;
 528                     }
 529                   strcpy(line + linel, n);
 530                   linel += l;
 531                 }
 532               break;
 533             default:
 534               POOL_DEBUG(SAT_DEBUG_RESULT, "  - %s\n", pool_solvable2str(pool, s));
 535               break;
 536             }
 537         }
 538       if (*line)
 539         POOL_DEBUG(SAT_DEBUG_RESULT, "    %s\n", line);
 540       POOL_DEBUG(SAT_DEBUG_RESULT, "\n");
 541     }
 542   queue_free(&classes);
 543   queue_free(&pkgs);
 544 }
 545
 546 void
 547 solver_printproblemruleinfo(Solver *solv, Id probr)
 548 {
 549   Pool *pool = solv->pool;
 550   Id dep, source, target;
 551
 552   switch (solver_ruleinfo(solv, probr, &source, &target, &dep))
 553     {
 554     case SOLVER_RULE_DISTUPGRADE:
 555       POOL_DEBUG(SAT_DEBUG_RESULT, "%s does not belong to a distupgrade repository\n", pool_solvid2str(pool, source));
 556       return;
 557     case SOLVER_RULE_INFARCH:
 558       POOL_DEBUG(SAT_DEBUG_RESULT, "%s has inferior architecture\n", pool_solvid2str(pool, source));
 559       return;
 560     case SOLVER_RULE_UPDATE:
 561       POOL_DEBUG(SAT_DEBUG_RESULT, "problem with installed package %s\n", pool_solvid2str(pool, source));
 562       return;
 563     case SOLVER_RULE_JOB:
 564       POOL_DEBUG(SAT_DEBUG_RESULT, "conflicting requests\n");
 565       return;
 566     case SOLVER_RULE_JOB_NOTHING_PROVIDES_DEP:
 567       POOL_DEBUG(SAT_DEBUG_RESULT, "nothing provides requested %s\n", pool_dep2str(pool, dep));
 568       return;
 569     case SOLVER_RULE_RPM:
 570       POOL_DEBUG(SAT_DEBUG_RESULT, "some dependency problem\n");
 571       return;
 572     case SOLVER_RULE_RPM_NOT_INSTALLABLE:
 573       POOL_DEBUG(SAT_DEBUG_RESULT, "package %s is not installable\n", pool_solvid2str(pool, source));
 574       return;
 575     case SOLVER_RULE_RPM_NOTHING_PROVIDES_DEP:
 576       POOL_DEBUG(SAT_DEBUG_RESULT, "nothing provides %s needed by %s\n", pool_dep2str(pool, dep), pool_solvid2str(pool, source));
 577       return;
 578     case SOLVER_RULE_RPM_SAME_NAME:
 579       POOL_DEBUG(SAT_DEBUG_RESULT, "cannot install both %s and %s\n", pool_solvid2str(pool, source), pool_solvid2str(pool, target));
 580       return;
 581     case SOLVER_RULE_RPM_PACKAGE_CONFLICT:
 582       POOL_DEBUG(SAT_DEBUG_RESULT, "package %s conflicts with %s provided by %s\n", pool_solvid2str(pool, source), pool_dep2str(pool, dep), pool_solvid2str(pool, target));
 583       return;
 584     case SOLVER_RULE_RPM_PACKAGE_OBSOLETES:
 585       POOL_DEBUG(SAT_DEBUG_RESULT, "package %s obsoletes %s provided by %s\n", pool_solvid2str(pool, source), pool_dep2str(pool, dep), pool_solvid2str(pool, target));
 586       return;
 587     case SOLVER_RULE_RPM_INSTALLEDPKG_OBSOLETES:
 588       POOL_DEBUG(SAT_DEBUG_RESULT, "installed package %s obsoletes %s provided by %s\n", pool_solvid2str(pool, source), pool_dep2str(pool, dep), pool_solvid2str(pool, target));
 589       return;
 590     case SOLVER_RULE_RPM_IMPLICIT_OBSOLETES:
 591       POOL_DEBUG(SAT_DEBUG_RESULT, "package %s implicitely obsoletes %s provided by %s\n", pool_solvid2str(pool, source), pool_dep2str(pool, dep), pool_solvid2str(pool, target));
 592       return;
 593     case SOLVER_RULE_RPM_PACKAGE_REQUIRES:
 594       POOL_DEBUG(SAT_DEBUG_RESULT, "package %s requires %s, but none of the providers can be installed\n", pool_solvid2str(pool, source), pool_dep2str(pool, dep));
 595       return;
 596     case SOLVER_RULE_RPM_SELF_CONFLICT:
 597       POOL_DEBUG(SAT_DEBUG_RESULT, "package %s conflicts with %s provided by itself\n", pool_solvid2str(pool, source), pool_dep2str(pool, dep));
 598       return;
 599     case SOLVER_RULE_UNKNOWN:
 600     case SOLVER_RULE_FEATURE:
 601     case SOLVER_RULE_LEARNT:
 602     case SOLVER_RULE_CHOICE:
 603       POOL_DEBUG(SAT_DEBUG_RESULT, "bad rule type\n");
 604       return;
 605     }
 606 }
 607
 608 void
 609 solver_printprobleminfo(Solver *solv, Id problem)
 610 {
 611   solver_printproblemruleinfo(solv, solver_findproblemrule(solv, problem));
 612 }
 613
 614 void
 615 solver_printcompleteprobleminfo(Solver *solv, Id problem)
 616 {
 617   Queue q;
 618   Id probr;
 619   int i, nobad = 0;
 620
 621   queue_init(&q);
 622   solver_findallproblemrules(solv, problem, &q);
 623   for (i = 0; i < q.count; i++)
 624     {
 625       probr = q.elements[i];
 626       if (!(probr >= solv->updaterules && probr < solv->updaterules_end) && !(probr >= solv->jobrules && probr < solv->jobrules_end))
 627         {
 628           nobad = 1;
 629           break;
 630         }
 631     }
 632   for (i = 0; i < q.count; i++)
 633     {
 634       probr = q.elements[i];
 635       if (nobad && ((probr >= solv->updaterules && probr < solv->updaterules_end) || (probr >= solv->jobrules && probr < solv->jobrules_end)))
 636         continue;
 637       solver_printproblemruleinfo(solv, probr);
 638     }
 639   queue_free(&q);
 640 }
 641
 642 void
 643 solver_printsolution(Solver *solv, Id problem, Id solution)
 644 {
 645   Pool *pool = solv->pool;
 646   Id p, rp, element, how, what, select;
 647   Solvable *s, *sd;
 648
 649   element = 0;
 650   while ((element = solver_next_solutionelement(solv, problem, solution, element, &p, &rp)) != 0)
 651     {
 652       if (p == SOLVER_SOLUTION_JOB)
 653         {
 654           /* job, rp is index into job queue */
 655           how = solv->job.elements[rp - 1];
 656           what = solv->job.elements[rp];
 657           select = how & SOLVER_SELECTMASK;
 658           switch (how & SOLVER_JOBMASK)
 659             {
 660             case SOLVER_INSTALL:
 661               if (select == SOLVER_SOLVABLE && solv->installed && pool->solvables[what].repo == solv->installed)
 662                 POOL_DEBUG(SAT_DEBUG_RESULT, "  - do not keep %s installed\n", pool_solvid2str(pool, what));
 663               else if (select == SOLVER_SOLVABLE_PROVIDES)
 664                 POOL_DEBUG(SAT_DEBUG_RESULT, "  - do not install a solvable %s\n", solver_select2str(pool, select, what));
 665               else
 666                 POOL_DEBUG(SAT_DEBUG_RESULT, "  - do not install %s\n", solver_select2str(pool, select, what));
 667               break;
 668             case SOLVER_ERASE:
 669               if (select == SOLVER_SOLVABLE && !(solv->installed && pool->solvables[what].repo == solv->installed))
 670                 POOL_DEBUG(SAT_DEBUG_RESULT, "  - do not forbid installation of %s\n", pool_solvid2str(pool, what));
 671               else if (select == SOLVER_SOLVABLE_PROVIDES)
 672                 POOL_DEBUG(SAT_DEBUG_RESULT, "  - do not deinstall all solvables %s\n", solver_select2str(pool, select, what));
 673               else
 674                 POOL_DEBUG(SAT_DEBUG_RESULT, "  - do not deinstall %s\n", solver_select2str(pool, select, what));
 675               break;
 676             case SOLVER_UPDATE:
 677               POOL_DEBUG(SAT_DEBUG_RESULT, "  - do not install most recent version of %s\n", solver_select2str(pool, select, what));
 678               break;
 679             case SOLVER_LOCK:
 680               POOL_DEBUG(SAT_DEBUG_RESULT, "  - do not lock %s\n", solver_select2str(pool, select, what));
 681               break;
 682             default:
 683               POOL_DEBUG(SAT_DEBUG_RESULT, "  - do something different\n");
 684               break;
 685             }
 686         }
 687       else if (p == SOLVER_SOLUTION_INFARCH)
 688         {
 689           s = pool->solvables + rp;
 690           if (solv->installed && s->repo == solv->installed)
 691             POOL_DEBUG(SAT_DEBUG_RESULT, "  - keep %s despite the inferior architecture\n", pool_solvable2str(pool, s));
 692           else
 693             POOL_DEBUG(SAT_DEBUG_RESULT, "  - install %s despite the inferior architecture\n", pool_solvable2str(pool, s));
 694         }
 695       else if (p == SOLVER_SOLUTION_DISTUPGRADE)
 696         {
 697           s = pool->solvables + rp;
 698           if (solv->installed && s->repo == solv->installed)
 699             POOL_DEBUG(SAT_DEBUG_RESULT, "  - keep obsolete %s\n", pool_solvable2str(pool, s));
 700           else
 701             POOL_DEBUG(SAT_DEBUG_RESULT, "  - install %s from excluded repository\n", pool_solvable2str(pool, s));
 702         }
 703       else
 704         {
 705           /* policy, replace p with rp */
 706           s = pool->solvables + p;
 707           sd = rp ? pool->solvables + rp : 0;
 708           if (sd)
 709             {
 710               int illegal = policy_is_illegal(solv, s, sd, 0);
 711               if ((illegal & POLICY_ILLEGAL_DOWNGRADE) != 0)
 712                 POOL_DEBUG(SAT_DEBUG_RESULT, "  - allow downgrade of %s to %s\n", pool_solvable2str(pool, s), pool_solvable2str(pool, sd));
 713               if ((illegal & POLICY_ILLEGAL_ARCHCHANGE) != 0)
 714                 POOL_DEBUG(SAT_DEBUG_RESULT, "  - allow architecture change of %s to %s\n", pool_solvable2str(pool, s), pool_solvable2str(pool, sd));
 715               if ((illegal & POLICY_ILLEGAL_VENDORCHANGE) != 0)
 716                 {
 717                   if (sd->vendor)
 718                     POOL_DEBUG(SAT_DEBUG_RESULT, "  - allow vendor change from '%s' (%s) to '%s' (%s)\n", pool_id2str(pool, s->vendor), pool_solvable2str(pool, s), pool_id2str(pool, sd->vendor), pool_solvable2str(pool, sd));
 719                   else
 720                     POOL_DEBUG(SAT_DEBUG_RESULT, "  - allow vendor change from '%s' (%s) to no vendor (%s)\n", pool_id2str(pool, s->vendor), pool_solvable2str(pool, s), pool_solvable2str(pool, sd));
 721                 }
 722               if (!illegal)
 723                 POOL_DEBUG(SAT_DEBUG_RESULT, "  - allow replacement of %s with %s\n", pool_solvable2str(pool, s), pool_solvable2str(pool, sd));
 724             }
 725           else
 726             {
 727               POOL_DEBUG(SAT_DEBUG_RESULT, "  - allow deinstallation of %s\n", pool_solvable2str(pool, s));
 728             }
 729         }
 730     }
 731 }
 732
 733 void
 734 solver_printallsolutions(Solver *solv)
 735 {
 736   Pool *pool = solv->pool;
 737   int pcnt;
 738   Id problem, solution;
 739
 740   POOL_DEBUG(SAT_DEBUG_RESULT, "Encountered problems! Here are the solutions:\n\n");
 741   pcnt = 0;
 742   problem = 0;
 743   while ((problem = solver_next_problem(solv, problem)) != 0)
 744     {
 745       pcnt++;
 746       POOL_DEBUG(SAT_DEBUG_RESULT, "Problem %d:\n", pcnt);
 747       POOL_DEBUG(SAT_DEBUG_RESULT, "====================================\n");
 748 #if 1
 749       solver_printprobleminfo(solv, problem);
 750 #else
 751       solver_printcompleteprobleminfo(solv, problem);
 752 #endif
 753       POOL_DEBUG(SAT_DEBUG_RESULT, "\n");
 754       solution = 0;
 755       while ((solution = solver_next_solution(solv, problem, solution)) != 0)
 756         {
 757           solver_printsolution(solv, problem, solution);
 758           POOL_DEBUG(SAT_DEBUG_RESULT, "\n");
 759         }
 760     }
 761 }
 762
 763 void
 764 solver_printtrivial(Solver *solv)
 765 {
 766   Pool *pool = solv->pool;
 767   Queue in, out;
 768   Id p;
 769   const char *n;
 770   Solvable *s;
 771   int i;
 772
 773   queue_init(&in);
 774   for (p = 1, s = pool->solvables + p; p < solv->pool->nsolvables; p++, s++)
 775     {
 776       n = pool_id2str(pool, s->name);
 777       if (strncmp(n, "patch:", 6) != 0 && strncmp(n, "pattern:", 8) != 0)
 778         continue;
 779       queue_push(&in, p);
 780     }
 781   if (!in.count)
 782     {
 783       queue_free(&in);
 784       return;
 785     }
 786   queue_init(&out);
 787   solver_trivial_installable(solv, &in, &out);
 788   POOL_DEBUG(SAT_DEBUG_RESULT, "trivial installable status:\n");
 789   for (i = 0; i < in.count; i++)
 790     POOL_DEBUG(SAT_DEBUG_RESULT, "  %s: %d\n", pool_solvid2str(pool, in.elements[i]), out.elements[i]);
 791   POOL_DEBUG(SAT_DEBUG_RESULT, "\n");
 792   queue_free(&in);
 793   queue_free(&out);
 794 }
 795
 796 const char *
 797 solver_select2str(Pool *pool, Id select, Id what)
 798 {
 799   const char *s;
 800   char *b;
 801   if (select == SOLVER_SOLVABLE)
 802     return pool_solvid2str(pool, what);
 803   if (select == SOLVER_SOLVABLE_NAME)
 804     return pool_dep2str(pool, what);
 805   if (select == SOLVER_SOLVABLE_PROVIDES)
 806     {
 807       s = pool_dep2str(pool, what);
 808       b = pool_alloctmpspace(pool, 11 + strlen(s));
 809       sprintf(b, "providing %s", s);
 810       return b;
 811     }
 812   if (select == SOLVER_SOLVABLE_ONE_OF)
 813     {
 814       Id p;
 815       b = 0;
 816       while ((p = pool->whatprovidesdata[what++]) != 0)
 817         {
 818           s = pool_solvid2str(pool, p);
 819           if (b)
 820             b = pool_tmpappend(pool, b, ", ", s);
 821           else
 822             b = pool_tmpjoin(pool, s, 0, 0);
 823           pool_freetmpspace(pool, s);
 824         }
 825       return b ? b : "nothing";
 826     }
 827   if (select == SOLVER_SOLVABLE_REPO)
 828     {
 829       b = pool_alloctmpspace(pool, 20);
 830       sprintf(b, "repo #%d", what);
 831       return b;
 832     }
 833   if (select == SOLVER_SOLVABLE_ALL)
 834     return "all packages";
 835   return "unknown job select";
 836 }
 837
 838 const char *
 839 pool_job2str(Pool *pool, Id how, Id what, Id flagmask)
 840 {
 841   Id select = how & SOLVER_SELECTMASK;
 842   const char *strstart = 0, *strend = 0;
 843   char *s;
 844   int o;
 845
 846   switch (how & SOLVER_JOBMASK)
 847     {
 848     case SOLVER_NOOP:
 849       return "do nothing";
 850     case SOLVER_INSTALL:
 851       if (select == SOLVER_SOLVABLE && pool->installed && pool->solvables[what].repo == pool->installed)
 852         strstart = "keep ", strend = "installed";
 853       else if (select == SOLVER_SOLVABLE || select == SOLVER_SOLVABLE_NAME)
 854         strstart = "install ";
 855       else if (select == SOLVER_SOLVABLE_PROVIDES)
 856         strstart = "install a package ";
 857       else
 858         strstart = "install one of ";
 859       break;
 860     case SOLVER_ERASE:
 861       if (select == SOLVER_SOLVABLE && !(pool->installed && pool->solvables[what].repo == pool->installed))
 862         strstart = "keep ", strend = "unstalled";
 863       else if (select == SOLVER_SOLVABLE_PROVIDES)
 864         strstart = "deinstall all packages ";
 865       else
 866         strstart = "deinstall ";
 867       break;
 868     case SOLVER_UPDATE:
 869       strstart = "update ";
 870       break;
 871     case SOLVER_WEAKENDEPS:
 872       strstart = "weaken deps of ";
 873       break;
 874     case SOLVER_NOOBSOLETES:
 875       strstart = "multi version ";
 876       break;
 877     case SOLVER_LOCK:
 878       strstart = "update ";
 879       break;
 880     case SOLVER_DISTUPGRADE:
 881       strstart = "dist upgrade ";
 882       break;
 883     case SOLVER_VERIFY:
 884       strstart = "verify ";
 885       break;
 886     case SOLVER_DROP_ORPHANED:
 887       strstart = "deinstall ", strend = "if orphaned";
 888       break;
 889     case SOLVER_USERINSTALLED:
 890       strstart = "regard ", strend = "as userinstalled";
 891       break;
 892     default:
 893       strstart = "unknown job ";
 894       break;
 895     }
 896   s = pool_tmpjoin(pool, strstart, solver_select2str(pool, select, what), strend);
 897   if ((how & flagmask & ~(SOLVER_SELECTMASK|SOLVER_JOBMASK)) == 0)
 898     return s;
 899   o = strlen(s);
 900   s = pool_tmpappend(pool, s, " ", 0);
 901   if (how & SOLVER_WEAK)
 902     s = pool_tmpappend(pool, s, ",weak", 0);
 903   if (how & SOLVER_ESSENTIAL)
 904     s = pool_tmpappend(pool, s, ",essential", 0);
 905   if (how & SOLVER_CLEANDEPS)
 906     s = pool_tmpappend(pool, s, ",cleandeps", 0);
 907   if (how & SOLVER_SETEV)
 908     s = pool_tmpappend(pool, s, ",setev", 0);
 909   if (how & SOLVER_SETEVR)
 910     s = pool_tmpappend(pool, s, ",setevr", 0);
 911   if (how & SOLVER_SETARCH)
 912     s = pool_tmpappend(pool, s, ",setarch", 0);
 913   if (how & SOLVER_SETVENDOR)
 914     s = pool_tmpappend(pool, s, ",setvendor", 0);
 915   if (how & SOLVER_SETREPO)
 916     s = pool_tmpappend(pool, s, ",setrepo", 0);
 917   if (how & SOLVER_NOAUTOSET)
 918     s = pool_tmpappend(pool, s, ",noautoset", 0);
 919   if (s[o + 1] != ',')
 920     s = pool_tmpappend(pool, s, ",?", 0);
 921   s[o + 1] = '[';
 922   return pool_tmpappend(pool, s, "]", 0);
 923 }
 924
 925 const char *
 926 solver_problemruleinfo2str(Solver *solv, SolverRuleinfo type, Id source, Id target, Id dep)
 927 {
 928   Pool *pool = solv->pool;
 929   char *s;
 930   switch (type)
 931     {
 932     case SOLVER_RULE_DISTUPGRADE:
 933       return pool_tmpjoin(pool, pool_solvid2str(pool, source), " does not belong to a distupgrade repository", 0);
 934     case SOLVER_RULE_INFARCH:
 935       return pool_tmpjoin(pool, pool_solvid2str(pool, source), " has inferior architecture", 0);
 936     case SOLVER_RULE_UPDATE:
 937       return pool_tmpjoin(pool, "problem with installed package ", pool_solvid2str(pool, source), 0);
 938     case SOLVER_RULE_JOB:
 939       return "conflicting requests";
 940     case SOLVER_RULE_JOB_NOTHING_PROVIDES_DEP:
 941       return pool_tmpjoin(pool, "nothing provides requested ", pool_dep2str(pool, dep), 0);
 942     case SOLVER_RULE_RPM:
 943       return "some dependency problem";
 944     case SOLVER_RULE_RPM_NOT_INSTALLABLE:
 945       return pool_tmpjoin(pool, "package ", pool_solvid2str(pool, source), " is not installable");
 946     case SOLVER_RULE_RPM_NOTHING_PROVIDES_DEP:
 947       s = pool_tmpjoin(pool, "nothing provides ", pool_dep2str(pool, dep), 0);
 948       return pool_tmpappend(pool, s, " needed by ", pool_solvid2str(pool, source));
 949     case SOLVER_RULE_RPM_SAME_NAME:
 950       s = pool_tmpjoin(pool, "cannot install both ", pool_solvid2str(pool, source), 0);
 951       return pool_tmpappend(pool, s, " and ", pool_solvid2str(pool, target));
 952     case SOLVER_RULE_RPM_PACKAGE_CONFLICT:
 953       s = pool_tmpjoin(pool, "package ", pool_solvid2str(pool, source), 0);
 954       s = pool_tmpappend(pool, s, " conflicts with ", pool_dep2str(pool, dep));
 955       return pool_tmpappend(pool, s, " provided by ", pool_solvid2str(pool, target));
 956     case SOLVER_RULE_RPM_PACKAGE_OBSOLETES:
 957       s = pool_tmpjoin(pool, "package ", pool_solvid2str(pool, source), 0);
 958       s = pool_tmpappend(pool, s, " obsoletes ", pool_dep2str(pool, dep));
 959       return pool_tmpappend(pool, s, " provided by ", pool_solvid2str(pool, target));
 960     case SOLVER_RULE_RPM_INSTALLEDPKG_OBSOLETES:
 961       s = pool_tmpjoin(pool, "installed package ", pool_solvid2str(pool, source), 0);
 962       s = pool_tmpappend(pool, s, " obsoletes ", pool_dep2str(pool, dep));
 963       return pool_tmpappend(pool, s, " provided by ", pool_solvid2str(pool, target));
 964     case SOLVER_RULE_RPM_IMPLICIT_OBSOLETES:
 965       s = pool_tmpjoin(pool, "package ", pool_solvid2str(pool, source), 0);
 966       s = pool_tmpappend(pool, s, " implicitely obsoletes ", pool_dep2str(pool, dep));
 967       return pool_tmpappend(pool, s, " provided by ", pool_solvid2str(pool, target));
 968     case SOLVER_RULE_RPM_PACKAGE_REQUIRES:
 969       s = pool_tmpjoin(pool, "package ", pool_solvid2str(pool, source), " requires ");
 970       return pool_tmpappend(pool, s, pool_dep2str(pool, dep), ", but none of the providers can be installed");
 971     case SOLVER_RULE_RPM_SELF_CONFLICT:
 972       s = pool_tmpjoin(pool, "package ", pool_solvid2str(pool, source), " conflicts with ");
 973       return pool_tmpappend(pool, s, pool_dep2str(pool, dep), " provided by itself");
 974     default:
 975       return "bad problem rule type";
 976     }
 977 }
 978
 979 const char *
 980 solver_solutionelement2str(Solver *solv, Id p, Id rp)
 981 {
 982   Pool *pool = solv->pool;
 983   if (p == SOLVER_SOLUTION_JOB)
 984     {
 985       Id how = solv->job.elements[rp - 1];
 986       Id what = solv->job.elements[rp];
 987       return pool_tmpjoin(pool, "do not ask to ", pool_job2str(pool, how, what, 0), 0);
 988     }
 989   else if (p == SOLVER_SOLUTION_INFARCH)
 990     {
 991       Solvable *s = pool->solvables + rp;
 992       if (solv->installed && s->repo == solv->installed)
 993         return pool_tmpjoin(pool, "keep ", pool_solvable2str(pool, s), " despite the inferior architecture");
 994       else
 995         return pool_tmpjoin(pool, "install ", pool_solvable2str(pool, s), " despite the inferior architecture");
 996     }
 997   else if (p == SOLVER_SOLUTION_DISTUPGRADE)
 998     {
 999       Solvable *s = pool->solvables + rp;
1000       if (solv->installed && s->repo == solv->installed)
1001         return pool_tmpjoin(pool, "keep obsolete ", pool_solvable2str(pool, s), 0);
1002       else
1003         return pool_tmpjoin(pool, "install ", pool_solvable2str(pool, s), " from excluded repository");
1004     }
1005   else if (p > 0 && rp == 0)
1006     return pool_tmpjoin(pool, "allow deinstallation of ", pool_solvid2str(pool, p), 0);
1007   else if (p > 0 && rp > 0)
1008     {
1009       const char *sp = pool_solvid2str(pool, p);
1010       const char *srp = pool_solvid2str(pool, rp);
1011       const char *str = pool_tmpjoin(pool, "allow replacement of ", sp, 0);
1012       return pool_tmpappend(pool, str, " with ", srp);
1013     }
1014   else
1015     return "bad solution element";
1016 }
1017
1018 const char *
1019 policy_illegal2str(Solver *solv, int illegal, Solvable *s, Solvable *rs)
1020 {
1021   Pool *pool = solv->pool;
1022   const char *str;
1023   if (illegal == POLICY_ILLEGAL_DOWNGRADE)
1024     {
1025       str = pool_tmpjoin(pool, "downgrade of ", pool_solvable2str(pool, s), 0);
1026       return pool_tmpappend(pool, str, " to ", pool_solvable2str(pool, rs));
1027     }
1028   if (illegal == POLICY_ILLEGAL_ARCHCHANGE)
1029     {
1030       str = pool_tmpjoin(pool, "architecture change of ", pool_solvable2str(pool, s), 0);
1031       return pool_tmpappend(pool, str, " to ", pool_solvable2str(pool, rs));
1032     }
1033   if (illegal == POLICY_ILLEGAL_VENDORCHANGE)
1034     {
1035       str = pool_tmpjoin(pool, "vendor change from '", pool_id2str(pool, s->vendor), "' (");
1036       if (rs->vendor)
1037         {
1038           str = pool_tmpappend(pool, str, pool_solvable2str(pool, s), ") to '");
1039           str = pool_tmpappend(pool, str, pool_id2str(pool, rs->vendor), "' (");
1040         }
1041       else
1042         str = pool_tmpappend(pool, str, pool_solvable2str(pool, s), ") to no vendor (");
1043       return pool_tmpappend(pool, str, pool_solvable2str(pool, rs), ")");
1044     }
1045   return "unknown illegal change";
1046 }