2 * Copyright (c) 2007, Novell Inc.
4 * This program is licensed under the BSD license, read LICENSE.BSD
5 * for further information
13 #ifndef LIBSOLV_SOLVER_H
14 #define LIBSOLV_SOLVER_H
20 #include "pooltypes.h"
25 #include "transaction.h"
31 Pool *pool; /* back pointer to pool */
32 Queue job; /* copy of the job we're solving */
34 int (*solution_callback)(struct _Solver *solv, void *data);
35 void *solution_callback_data;
37 int pooljobcnt; /* number of pooljob entries in job queue */
39 #ifdef LIBSOLV_INTERNAL
40 Repo *installed; /* copy of pool->installed */
42 /* list of rules, ordered
43 * rpm rules first, then features, updates, jobs, learnt
44 * see start/end offsets below
46 Rule *rules; /* all rules */
47 Id nrules; /* [Offset] index of the last rule */
49 Queue ruleassertions; /* Queue of all assertion rules */
51 /* start/end offset for rule 'areas' */
53 Id rpmrules_end; /* [Offset] rpm rules end */
55 Id featurerules; /* feature rules start/end */
58 Id updaterules; /* policy rules, e.g. keep packages installed or update. All literals > 0 */
61 Id jobrules; /* user rules */
64 Id infarchrules; /* inferior arch rules */
67 Id duprules; /* dist upgrade rules */
70 Id bestrules; /* rules from SOLVER_FORCEBEST */
74 Id choicerules; /* choice rules (always weak) */
78 Id learntrules; /* learnt rules, (end == nrules) */
80 Map noupdate; /* don't try to update these
81 installed solvables */
82 Map noobsoletes; /* ignore obsoletes for these (multiinstall) */
84 Map updatemap; /* bring these installed packages to the newest version */
85 int updatemap_all; /* bring all packages to the newest version */
87 Map bestupdatemap; /* create best rule for those packages */
88 int bestupdatemap_all; /* bring all packages to the newest version */
90 Map fixmap; /* fix these packages */
91 int fixmap_all; /* fix all packages */
93 Queue weakruleq; /* index into 'rules' for weak ones */
94 Map weakrulemap; /* map rule# to '1' for weak rules, 1..learntrules */
96 Id *watches; /* Array of rule offsets
97 * watches has nsolvables*2 entries and is addressed from the middle
98 * middle-solvable : decision to conflict, offset point to linked-list of rules
99 * middle+solvable : decision to install: offset point to linked-list of rules
102 Queue ruletojob; /* index into job queue: jobs for which a rule exits */
105 Queue decisionq; /* >0:install, <0:remove/conflict */
106 Queue decisionq_why; /* index of rule, Offset into rules */
108 Id *decisionmap; /* map for all available solvables,
110 * > 0: level of decision when installed,
111 * < 0: level of decision when conflict */
113 int decisioncnt_update;
114 int decisioncnt_keep;
115 int decisioncnt_resolve;
116 int decisioncnt_weak;
117 int decisioncnt_orphan;
119 /* learnt rule history */
124 int propagate_index; /* index into decisionq for non-propagated decisions */
126 Queue problems; /* list of lists of conflicting rules, < 0 for job rules */
127 Queue solutions; /* refined problem storage space */
129 Queue orphaned; /* orphaned packages (to be removed?) */
131 int stats_learned; /* statistic */
132 int stats_unsolvable; /* statistic */
134 Map recommendsmap; /* recommended packages from decisionmap */
135 Map suggestsmap; /* suggested packages from decisionmap */
136 int recommends_index; /* recommendsmap/suggestsmap is created up to this level */
138 Id *obsoletes; /* obsoletes for each installed solvable */
139 Id *obsoletes_data; /* data area for obsoletes */
140 Id *multiversionupdaters; /* updaters for multiversion packages in updatesystem mode */
142 /*-------------------------------------------------------------------------------------------------------------
143 * Solver configuration
144 *-------------------------------------------------------------------------------------------------------------*/
146 int allowdowngrade; /* allow to downgrade installed solvable */
147 int allownamechange; /* allow to change name of installed solvables */
148 int allowarchchange; /* allow to change architecture of installed solvables */
149 int allowvendorchange; /* allow to change vendor of installed solvables */
150 int allowuninstall; /* allow removal of installed solvables */
151 int noupdateprovide; /* true: update packages needs not to provide old package */
152 int dosplitprovides; /* true: consider legacy split provides */
153 int dontinstallrecommended; /* true: do not install recommended packages */
154 int addalreadyrecommended; /* true: also install recommended packages that were already recommended by the installed packages */
155 int dontshowinstalledrecommended; /* true: do not show recommended packages that are already installed */
157 int noinfarchcheck; /* true: do not forbid inferior architectures */
158 int keepexplicitobsoletes; /* true: honor obsoletes during multiinstall */
159 int bestobeypolicy; /* true: stay in policy with the best rules */
160 int noautotarget; /* true: do not assume targeted for up/dup jobs that contain no installed solvable */
163 Map dupmap; /* dup these packages*/
164 int dupmap_all; /* dup all packages */
165 Map dupinvolvedmap; /* packages involved in dup process */
166 int dup_allowdowngrade; /* dup mode: allow to downgrade installed solvable */
167 int dup_allownamechange; /* dup mode: allow to change name of installed solvable */
168 int dup_allowarchchange; /* dup mode: allow to change architecture of installed solvables */
169 int dup_allowvendorchange; /* dup mode: allow to change vendor of installed solvables */
171 Map droporphanedmap; /* packages to drop in dup mode */
172 int droporphanedmap_all;
174 Map cleandepsmap; /* try to drop these packages as of cleandeps erases */
176 Queue *ruleinfoq; /* tmp space for solver_ruleinfo() */
178 Queue *cleandeps_updatepkgs; /* packages we update in cleandeps mode */
179 Queue *cleandeps_mistakes; /* mistakes we made */
181 Queue *update_targets; /* update to specific packages */
183 Queue *installsuppdepq; /* deps from the install namespace provides hack */
185 Queue addedmap_deduceq; /* deduce addedmap from rpm rules */
186 #endif /* LIBSOLV_INTERNAL */
189 typedef struct _Solver Solver;
195 #define SOLVER_SOLVABLE 0x01
196 #define SOLVER_SOLVABLE_NAME 0x02
197 #define SOLVER_SOLVABLE_PROVIDES 0x03
198 #define SOLVER_SOLVABLE_ONE_OF 0x04
199 #define SOLVER_SOLVABLE_REPO 0x05
200 #define SOLVER_SOLVABLE_ALL 0x06
202 #define SOLVER_SELECTMASK 0xff
204 #define SOLVER_NOOP 0x0000
205 #define SOLVER_INSTALL 0x0100
206 #define SOLVER_ERASE 0x0200
207 #define SOLVER_UPDATE 0x0300
208 #define SOLVER_WEAKENDEPS 0x0400
209 #define SOLVER_NOOBSOLETES 0x0500
210 #define SOLVER_LOCK 0x0600
211 #define SOLVER_DISTUPGRADE 0x0700
212 #define SOLVER_VERIFY 0x0800
213 #define SOLVER_DROP_ORPHANED 0x0900
214 #define SOLVER_USERINSTALLED 0x0a00
216 #define SOLVER_JOBMASK 0xff00
218 #define SOLVER_WEAK 0x010000
219 #define SOLVER_ESSENTIAL 0x020000
220 #define SOLVER_CLEANDEPS 0x040000
221 /* ORUPDATE makes SOLVER_INSTALL not prune to installed
222 * packages, thus updating installed packages */
223 #define SOLVER_ORUPDATE 0x080000
224 /* FORCEBEST makes the solver insist on best packages, so
225 * you will get problem reported if the best package is
226 * not installable. This can be used with INSTALL, UPDATE
228 #define SOLVER_FORCEBEST 0x100000
229 /* TARGETED is used in up/dup jobs to make the solver
230 * treat the specified selection as target packages.
231 * It is automatically assumed if the selection does not
232 * contain an "installed" package unless the
233 * NO_AUTOTARGET solver flag is set */
234 #define SOLVER_TARGETED 0x200000
236 #define SOLVER_SETEV 0x01000000
237 #define SOLVER_SETEVR 0x02000000
238 #define SOLVER_SETARCH 0x04000000
239 #define SOLVER_SETVENDOR 0x08000000
240 #define SOLVER_SETREPO 0x10000000
241 #define SOLVER_NOAUTOSET 0x20000000
242 #define SOLVER_SETNAME 0x40000000
244 #define SOLVER_SETMASK 0x7f000000
246 #define SOLVER_REASON_UNRELATED 0
247 #define SOLVER_REASON_UNIT_RULE 1
248 #define SOLVER_REASON_KEEP_INSTALLED 2
249 #define SOLVER_REASON_RESOLVE_JOB 3
250 #define SOLVER_REASON_UPDATE_INSTALLED 4
251 #define SOLVER_REASON_CLEANDEPS_ERASE 5
252 #define SOLVER_REASON_RESOLVE 6
253 #define SOLVER_REASON_WEAKDEP 7
254 #define SOLVER_REASON_RESOLVE_ORPHAN 8
256 #define SOLVER_REASON_RECOMMENDED 16
257 #define SOLVER_REASON_SUPPLEMENTED 17
260 #define SOLVER_FLAG_ALLOW_DOWNGRADE 1
261 #define SOLVER_FLAG_ALLOW_ARCHCHANGE 2
262 #define SOLVER_FLAG_ALLOW_VENDORCHANGE 3
263 #define SOLVER_FLAG_ALLOW_UNINSTALL 4
264 #define SOLVER_FLAG_NO_UPDATEPROVIDE 5
265 #define SOLVER_FLAG_SPLITPROVIDES 6
266 #define SOLVER_FLAG_IGNORE_RECOMMENDED 7
267 #define SOLVER_FLAG_ADD_ALREADY_RECOMMENDED 8
268 #define SOLVER_FLAG_NO_INFARCHCHECK 9
269 #define SOLVER_FLAG_ALLOW_NAMECHANGE 10
270 #define SOLVER_FLAG_KEEP_EXPLICIT_OBSOLETES 11
271 #define SOLVER_FLAG_BEST_OBEY_POLICY 12
272 #define SOLVER_FLAG_NO_AUTOTARGET 13
274 extern Solver *solver_create(Pool *pool);
275 extern void solver_free(Solver *solv);
276 extern int solver_solve(Solver *solv, Queue *job);
277 extern Transaction *solver_create_transaction(Solver *solv);
278 extern int solver_set_flag(Solver *solv, int flag, int value);
279 extern int solver_get_flag(Solver *solv, int flag);
281 extern int solver_get_decisionlevel(Solver *solv, Id p);
282 extern void solver_get_decisionqueue(Solver *solv, Queue *decisionq);
283 extern int solver_get_lastdecisionblocklevel(Solver *solv);
284 extern void solver_get_decisionblock(Solver *solv, int level, Queue *decisionq);
286 extern void solver_get_orphaned(Solver *solv, Queue *orphanedq);
287 extern void solver_get_recommendations(Solver *solv, Queue *recommendationsq, Queue *suggestionsq, int noselected);
288 extern void solver_get_unneeded(Solver *solv, Queue *unneededq, int filtered);
290 extern int solver_describe_decision(Solver *solv, Id p, Id *infop);
291 extern void solver_describe_weakdep_decision(Solver *solv, Id p, Queue *whyq);
294 extern void solver_calculate_noobsmap(Pool *pool, Queue *job, Map *noobsmap);
295 extern void solver_create_state_maps(Solver *solv, Map *installedmap, Map *conflictsmap);
297 /* XXX: why is this not static? */
298 Id *solver_create_decisions_obsoletesmap(Solver *solv);
300 void solver_calc_duchanges(Solver *solv, DUChanges *mps, int nmps);
301 int solver_calc_installsizechange(Solver *solv);
302 void solver_trivial_installable(Solver *solv, Queue *pkgs, Queue *res);
304 void pool_job2solvables(Pool *pool, Queue *pkgs, Id how, Id what);
305 int pool_isemptyupdatejob(Pool *pool, Id how, Id what);
307 /* iterate over all literals of a rule */
308 #define FOR_RULELITERALS(l, pp, r) \
309 for (pp = r->d < 0 ? -r->d - 1 : r->d, \
310 l = r->p; l; l = (pp <= 0 ? (pp-- ? 0 : r->w2) : \
311 pool->whatprovidesdata[pp++]))
316 /* XXX: this currently doesn't work correctly for SOLVER_SOLVABLE_REPO and
317 SOLVER_SOLVABLE_ALL */
319 /* iterate over all packages selected by a job */
320 #define FOR_JOB_SELECT(p, pp, select, what) \
321 if (select == SOLVER_SOLVABLE_REPO || select == SOLVER_SOLVABLE_ALL) \
323 else for (pp = (select == SOLVER_SOLVABLE ? 0 : \
324 select == SOLVER_SOLVABLE_ONE_OF ? what : \
325 pool_whatprovides(pool, what)), \
326 p = (select == SOLVER_SOLVABLE ? what : pool->whatprovidesdata[pp++]); \
327 p ; p = pool->whatprovidesdata[pp++]) \
328 if (select == SOLVER_SOLVABLE_NAME && \
329 pool_match_nevr(pool, pool->solvables + p, what) == 0) \
337 #endif /* LIBSOLV_SOLVER_H */