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librazor/transaction.c
author Richard Hughes <richard@hughsie.com>
Mon Jun 30 08:51:26 2008 +0100 (2008-06-30)
changeset 302 9b71b537d175
parent 301 4124c37fd953
child 304 bf23ba00db03
permissions -rw-r--r--
convert razor_package_get_details() and razor_package_iterator_next() to varargs

The functions for getting package details about a package were limited to a few
things, when in the future we will want to support much more about a package.
The iterator was also limited to name,version,arch when most of the time we
didn't need all this data. 
     1 /*

     2  * Copyright (C) 2008  Kristian Høgsberg <krh@redhat.com>

     3  * Copyright (C) 2008  Red Hat, Inc

     4  *

     5  * This program is free software; you can redistribute it and/or modify

     6  * it under the terms of the GNU General Public License as published by

     7  * the Free Software Foundation; either version 2 of the License, or

     8  * (at your option) any later version.

     9  *

    10  * This program is distributed in the hope that it will be useful,

    11  * but WITHOUT ANY WARRANTY; without even the implied warranty of

    12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

    13  * GNU General Public License for more details.

    14  *

    15  * You should have received a copy of the GNU General Public License along

    16  * with this program; if not, write to the Free Software Foundation, Inc.,

    17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

    18  */

    19 

    20 #define _GNU_SOURCE

    21 

    22 #include <stdlib.h>

    23 #include <stddef.h>

    24 #include <stdint.h>

    25 #include <stdio.h>

    26 #include <string.h>

    27 #include <sys/types.h>

    28 #include <sys/stat.h>

    29 #include <sys/mman.h>

    30 #include <unistd.h>

    31 #include <fcntl.h>

    32 #include <errno.h>

    33 #include <ctype.h>

    34 #include <fnmatch.h>

    35 #include <assert.h>

    36 

    37 #include "razor-internal.h"

    38 #include "razor.h"

    39 

    40 static int

    41 provider_satisfies_requirement(struct razor_property *provider,

    42 			       const char *provider_strings,

    43 			       uint32_t flags,

    44 			       const char *required)

    45 {

    46 	int cmp, len;

    47 	const char *provided = &provider_strings[provider->version];

    48 

    49 	if (!*required)

    50 		return 1;

    51 	if (!*provided) {

    52 		if (flags & RAZOR_PROPERTY_LESS)

    53 			return 0;

    54 		else

    55 			return 1;

    56 	}

    57 

    58 	cmp = razor_versioncmp(provided, required);

    59 

    60 	switch (flags & RAZOR_PROPERTY_RELATION_MASK) {

    61 	case RAZOR_PROPERTY_LESS:

    62 		return cmp < 0;

    63 

    64 	case RAZOR_PROPERTY_LESS | RAZOR_PROPERTY_EQUAL:

    65 		if (cmp <= 0)

    66 			return 1;

    67 		/* fall through: FIXME, make sure this is correct */

    68 

    69 	case RAZOR_PROPERTY_EQUAL:

    70 		if (cmp == 0)

    71 			return 1;

    72 

    73 		/* "foo == 1.1" is satisfied by "foo 1.1-2" */

    74 		len = strlen(required);

    75 		if (!strncmp(required, provided, len) && provided[len] == '-')

    76 			return 1;

    77 		return 0;

    78 

    79 	case RAZOR_PROPERTY_GREATER | RAZOR_PROPERTY_EQUAL:

    80 		return cmp >= 0;

    81 

    82 	case RAZOR_PROPERTY_GREATER:

    83 		return cmp > 0;

    84 	}

    85 

    86 	/* shouldn't happen */

    87 	return 0;

    88 }

    89 

    90 #define TRANS_PACKAGE_PRESENT		1

    91 #define TRANS_PACKAGE_UPDATE		2

    92 #define TRANS_PROPERTY_SATISFIED	0x80000000

    93 

    94 struct transaction_set {

    95 	struct razor_set *set;

    96 	uint32_t *packages;

    97 	uint32_t *properties;

    98 };

    99 

   100 struct razor_transaction {

   101 	int package_count, errors;

   102 	struct transaction_set system, upstream;

   103 	int changes;

   104 };

   105 

   106 static void

   107 transaction_set_init(struct transaction_set *ts, struct razor_set *set)

   108 {

   109 	int count;

   110 

   111 	ts->set = set;

   112 	count = set->packages.size / sizeof (struct razor_package);

   113 	ts->packages = zalloc(count * sizeof *ts->packages);

   114 	count = set->properties.size / sizeof (struct razor_property);

   115 	ts->properties = zalloc(count * sizeof *ts->properties);

   116 }

   117 

   118 static void

   119 transaction_set_release(struct transaction_set *ts)

   120 {

   121 	free(ts->packages);

   122 	free(ts->properties);

   123 }

   124 

   125 static void

   126 transaction_set_install_package(struct transaction_set *ts,

   127 				struct razor_package *package)

   128 {

   129 	struct razor_package *pkgs;

   130 	struct list *prop;

   131 	int i;

   132 

   133 	pkgs = ts->set->packages.data;

   134 	i = package - pkgs;

   135 	if (ts->packages[i] == TRANS_PACKAGE_PRESENT)

   136 		return;

   137 

   138 	ts->packages[i] = TRANS_PACKAGE_PRESENT;

   139 

   140 	prop = list_first(&package->properties, &ts->set->property_pool);

   141 	while (prop) {

   142 		ts->properties[prop->data]++;

   143 		prop = list_next(prop);

   144 	}

   145 }

   146 

   147 static void

   148 transaction_set_remove_package(struct transaction_set *ts,

   149 			       struct razor_package *package)

   150 {

   151 	struct razor_package *pkgs;

   152 	struct list *prop;

   153 	int i;

   154 

   155 	pkgs = ts->set->packages.data;

   156 	i = package - pkgs;

   157 	if (ts->packages[i] == 0)

   158 		return;

   159 

   160 	ts->packages[i] = 0;

   161 

   162 	prop = list_first(&package->properties, &ts->set->property_pool);

   163 	while (prop) {

   164 		ts->properties[prop->data]--;

   165 		prop = list_next(prop);

   166 	}

   167 }

   168 

   169 RAZOR_EXPORT struct razor_transaction *

   170 razor_transaction_create(struct razor_set *system, struct razor_set *upstream)

   171 {

   172 	struct razor_transaction *trans;

   173 	struct razor_package *p, *spkgs, *pend;

   174 

   175 	trans = zalloc(sizeof *trans);

   176 	transaction_set_init(&trans->system, system);

   177 	transaction_set_init(&trans->upstream, upstream);

   178 

   179 	spkgs = trans->system.set->packages.data;

   180 	pend = trans->system.set->packages.data +

   181 		trans->system.set->packages.size;

   182 	for (p = spkgs; p < pend; p++)

   183 		transaction_set_install_package(&trans->system, p);

   184 

   185 	return trans;

   186 }

   187 

   188 RAZOR_EXPORT void

   189 razor_transaction_install_package(struct razor_transaction *trans,

   190 				  struct razor_package *package)

   191 {

   192 	assert (trans != NULL);

   193 	assert (package != NULL);

   194 

   195 	transaction_set_install_package(&trans->upstream, package);

   196 	trans->changes++;

   197 }

   198 

   199 RAZOR_EXPORT void

   200 razor_transaction_remove_package(struct razor_transaction *trans,

   201 				 struct razor_package *package)

   202 {

   203 	assert (trans != NULL);

   204 	assert (package != NULL);

   205 

   206 	transaction_set_remove_package(&trans->system, package);

   207 	trans->changes++;

   208 }

   209 

   210 RAZOR_EXPORT void

   211 razor_transaction_update_package(struct razor_transaction *trans,

   212 				  struct razor_package *package)

   213 {

   214 	struct razor_package *spkgs, *upkgs, *end;

   215 

   216 	assert (trans != NULL);

   217 	assert (package != NULL);

   218 

   219 	spkgs = trans->system.set->packages.data;

   220 	upkgs = trans->upstream.set->packages.data;

   221 	end = trans->system.set->packages.data +

   222 		trans->system.set->packages.size;

   223 	if (spkgs <= package && package < end)

   224 		trans->system.packages[package - spkgs] |= TRANS_PACKAGE_UPDATE;

   225 	else

   226 		trans->upstream.packages[package - upkgs] |= TRANS_PACKAGE_UPDATE;

   227 }

   228 

   229 struct prop_iter {

   230 	struct razor_property *p, *start, *end;

   231 	const char *pool;

   232 	uint32_t *present;

   233 };

   234 

   235 static void

   236 prop_iter_init(struct prop_iter *pi, struct transaction_set *ts)

   237 {

   238 	pi->p = ts->set->properties.data;

   239 	pi->start = ts->set->properties.data;

   240 	pi->end = ts->set->properties.data + ts->set->properties.size;

   241 	pi->pool = ts->set->string_pool.data;

   242 	pi->present = ts->properties;

   243 }

   244 

   245 static int

   246 prop_iter_next(struct prop_iter *pi, uint32_t flags, struct razor_property **p)

   247 {

   248 	while (pi->p < pi->end) {

   249 		if ((pi->present[pi->p - pi->start] & ~TRANS_PROPERTY_SATISFIED) &&

   250 		    (pi->p->flags & RAZOR_PROPERTY_TYPE_MASK) == flags) {

   251 			*p = pi->p++;

   252 			return 1;

   253 		}

   254 		pi->p++;

   255 	}

   256 

   257 	return 0;

   258 }

   259 

   260 static struct razor_property *

   261 prop_iter_seek_to(struct prop_iter *pi,

   262 		  uint32_t flags, const char *match)

   263 {

   264 	uint32_t name;

   265 

   266 	while (pi->p < pi->end && strcmp(&pi->pool[pi->p->name], match) < 0)

   267 		pi->p++;

   268 

   269 	if (pi->p == pi->end || strcmp(&pi->pool[pi->p->name], match) > 0)

   270 		return NULL;

   271 

   272 	name = pi->p->name;

   273 	while (pi->p < pi->end &&

   274 	       pi->p->name == name &&

   275 	       (pi->p->flags & RAZOR_PROPERTY_TYPE_MASK) != flags)

   276 		pi->p++;

   277 

   278 	if (pi->p == pi->end || pi->p->name != name)

   279 		return NULL;

   280 

   281 	return pi->p;

   282 }

   283 

   284 /* Remove packages from set that provide any of the matching (same

   285  * name and type) providers from ppi onwards that match the

   286  * requirement that rpi points to. */

   287 static void

   288 remove_matching_providers(struct razor_transaction *trans,

   289 			  struct prop_iter *ppi,

   290 			  uint32_t flags,

   291 			  const char *version)

   292 {

   293 	struct razor_property *p;

   294 	struct razor_package *pkg, *pkgs;

   295 	struct razor_package_iterator pkg_iter;

   296 	struct razor_set *set;

   297 	const char *n, *v;

   298 	uint32_t type;

   299 

   300 	if (ppi->present == trans->system.properties)

   301 		set = trans->system.set;

   302 	else

   303 		set = trans->upstream.set;

   304 

   305 	pkgs = (struct razor_package *) set->packages.data;

   306 	type = ppi->p->flags & RAZOR_PROPERTY_TYPE_MASK;

   307 	for (p = ppi->p;

   308 	     p < ppi->end &&

   309 	     p->name == ppi->p->name &&

   310 	     (p->flags & RAZOR_PROPERTY_TYPE_MASK) == type;

   311 	     p++) {

   312 		if (!ppi->present[p - ppi->start])

   313 			continue;

   314 		if (!provider_satisfies_requirement(p, ppi->pool,

   315 						    flags, version))

   316 			continue;

   317 

   318 		razor_package_iterator_init_for_property(&pkg_iter, set, p);

   319 		while (razor_package_iterator_next(&pkg_iter, &pkg,

   320 						   RAZOR_DETAIL_NAME, &n,

   321 						   RAZOR_DETAIL_VERSION, &v, 0)) {

   322 			fprintf(stderr, "removing %s-%s\n", n, v);

   323 			razor_transaction_remove_package(trans, pkg);

   324 		}

   325 	}

   326 }

   327 

   328 static void

   329 flag_matching_providers(struct razor_transaction *trans,

   330 			struct prop_iter *ppi,

   331 			struct razor_property *r,

   332 			struct prop_iter *rpi,

   333 			unsigned int flag)

   334 {

   335 	struct razor_property *p;

   336 	struct razor_package *pkg, *pkgs;

   337 	struct razor_package_iterator pkg_iter;

   338 	struct razor_set *set;

   339 	const char *name, *version;

   340 	uint32_t *flags, type;

   341 

   342 	if (ppi->present == trans->system.properties) {

   343 		set = trans->system.set;

   344 		flags = trans->system.packages;

   345 	} else {

   346 		set = trans->upstream.set;

   347 		flags = trans->upstream.packages;

   348 	}

   349 

   350 	pkgs = (struct razor_package *) set->packages.data;

   351 	type = ppi->p->flags & RAZOR_PROPERTY_TYPE_MASK;

   352 	for (p = ppi->p;

   353 	     p < ppi->end &&

   354 		     p->name == ppi->p->name &&

   355 		     (p->flags & RAZOR_PROPERTY_TYPE_MASK) == type;

   356 	     p++) {

   357 		if (!ppi->present[p - ppi->start])

   358 			continue;

   359 		if (!provider_satisfies_requirement(p, ppi->pool,

   360 						    r->flags,

   361 						    &rpi->pool[r->version]))

   362 			continue;

   363 

   364 		razor_package_iterator_init_for_property(&pkg_iter, set, p);

   365 		while (razor_package_iterator_next(&pkg_iter, &pkg,

   366 						   RAZOR_DETAIL_NAME, &name,

   367 						   RAZOR_DETAIL_VERSION, &version, 0)) {

   368 

   369 			fprintf(stderr, "flagging %s-%s for providing %s matching %s %s\n",

   370 				name, version,

   371 				ppi->pool + p->name,

   372 				rpi->pool + r->name,

   373 				rpi->pool + r->version);

   374 			flags[pkg - pkgs] |= flag;

   375 		}

   376 	}

   377 }

   378 

   379 static struct razor_package *

   380 pick_matching_provider(struct razor_set *set,

   381 		       struct prop_iter *ppi,

   382 		       uint32_t flags,

   383 		       const char *version)

   384 {

   385 	struct razor_property *p;

   386 	struct razor_package *pkgs;

   387 	struct list *i;

   388 	uint32_t type;

   389 

   390 	/* This is where we decide which pkgs to pull in to satisfy a

   391 	 * requirement.  There may be several different providers

   392 	 * (different versions) and each version of a provider may

   393 	 * come from a number of packages.  We pick the first package

   394 	 * from the first provider that matches. */

   395 

   396 	pkgs = set->packages.data;

   397 	type = ppi->p->flags & RAZOR_PROPERTY_TYPE_MASK;

   398 	for (p = ppi->p;

   399 	     p < ppi->end &&

   400 		     p->name == ppi->p->name &&

   401 		     (p->flags & RAZOR_PROPERTY_TYPE_MASK) == type &&

   402 		     ppi->present[p - ppi->start] == 0;

   403 	     p++) {

   404 		if (!provider_satisfies_requirement(p, ppi->pool,

   405 						    flags, version))

   406 			continue;

   407 

   408 		i = list_first(&p->packages, &set->package_pool);

   409 

   410 		return &pkgs[i->data];

   411 	}

   412 

   413 	return NULL;

   414 }

   415 

   416 static void

   417 remove_obsoleted_packages(struct razor_transaction *trans)

   418 {

   419 	struct razor_property *up;

   420 	struct razor_package *spkgs;

   421 	struct prop_iter spi, upi;

   422 

   423 	spkgs = trans->system.set->packages.data;

   424 	prop_iter_init(&spi, &trans->system);

   425 	prop_iter_init(&upi, &trans->upstream);

   426 

   427 	while (prop_iter_next(&upi, RAZOR_PROPERTY_OBSOLETES, &up)) {

   428 		if (!prop_iter_seek_to(&spi, RAZOR_PROPERTY_PROVIDES,

   429 				       &upi.pool[up->name]))

   430 			continue;

   431 		remove_matching_providers(trans, &spi, up->flags,

   432 					  &upi.pool[up->version]);

   433 	}

   434 }

   435 

   436 static int

   437 any_provider_satisfies_requirement(struct prop_iter *ppi,

   438 				   uint32_t flags,

   439 				   const char *version)

   440 {

   441 	struct razor_property *p;

   442 	uint32_t type;

   443 

   444 	type = ppi->p->flags & RAZOR_PROPERTY_TYPE_MASK;

   445 	for (p = ppi->p;

   446 	     p < ppi->end &&

   447 		     p->name == ppi->p->name &&

   448 		     (p->flags & RAZOR_PROPERTY_TYPE_MASK) == type;

   449 	     p++) {

   450 		if (ppi->present[p - ppi->start] > 0 &&

   451 		    provider_satisfies_requirement(p, ppi->pool,

   452 						   flags, version))

   453 			return 1;

   454 	}

   455 

   456 	return 0;

   457 }

   458 

   459 static void

   460 clear_requires_flags(struct transaction_set *ts)

   461 {

   462 	struct razor_property *p;

   463 	const char *pool;

   464 	int i, count;

   465 

   466 	count = ts->set->properties.size / sizeof *p;

   467 	p = ts->set->properties.data;

   468 	pool = ts->set->string_pool.data;

   469 	for (i = 0; i < count; i++) {

   470 		ts->properties[i] &= ~TRANS_PROPERTY_SATISFIED;

   471 		if (strncmp(&pool[p[i].name], "rpmlib(", 7) == 0)

   472 			ts->properties[i] |= TRANS_PROPERTY_SATISFIED;

   473 	}

   474 }

   475 

   476 static void

   477 mark_satisfied_requires(struct razor_transaction *trans,

   478 			struct transaction_set *rts,

   479 			struct transaction_set *pts)

   480 {

   481 	struct prop_iter rpi, ppi;

   482 	struct razor_property *rp;

   483 

   484 	prop_iter_init(&rpi, rts);

   485 	prop_iter_init(&ppi, pts);

   486 

   487 	while (prop_iter_next(&rpi, RAZOR_PROPERTY_REQUIRES, &rp)) {

   488 		if (!prop_iter_seek_to(&ppi, RAZOR_PROPERTY_PROVIDES,

   489 				       &rpi.pool[rp->name]))

   490 			continue;

   491 

   492 		if (any_provider_satisfies_requirement(&ppi, rp->flags,

   493 						       &rpi.pool[rp->version]))

   494 			rpi.present[rp - rpi.start] |= TRANS_PROPERTY_SATISFIED;

   495 	}

   496 }

   497 

   498 static void

   499 mark_all_satisfied_requires(struct razor_transaction *trans)

   500 {

   501 	clear_requires_flags(&trans->system);

   502 	clear_requires_flags(&trans->upstream);

   503 	mark_satisfied_requires(trans, &trans->system, &trans->system);

   504 	mark_satisfied_requires(trans, &trans->system, &trans->upstream);

   505 	mark_satisfied_requires(trans, &trans->upstream, &trans->system);

   506 	mark_satisfied_requires(trans, &trans->upstream, &trans->upstream);

   507 }

   508 

   509 static void

   510 update_unsatisfied_packages(struct razor_transaction *trans)

   511 {

   512 	struct razor_package *spkgs, *pkg;

   513 	struct razor_property *sp;

   514 	struct prop_iter spi;

   515 	struct razor_package_iterator pkg_iter;

   516 	const char *name;

   517 

   518 	spkgs = trans->system.set->packages.data;

   519 	prop_iter_init(&spi, &trans->system);

   520 

   521 	while (prop_iter_next(&spi, RAZOR_PROPERTY_REQUIRES, &sp)) {

   522 		if (spi.present[sp - spi.start] & TRANS_PROPERTY_SATISFIED)

   523 			continue;

   524 

   525 		razor_package_iterator_init_for_property(&pkg_iter,

   526 							 trans->system.set,

   527 							 sp);

   528 		while (razor_package_iterator_next(&pkg_iter, &pkg,

   529 						   RAZOR_DETAIL_NAME, &name, 0)) {

   530 			fprintf(stderr, "updating %s because %s %s %s "

   531 				"isn't satisfied\n",

   532 				name, spi.pool + sp->name,

   533 				razor_property_relation_to_string(sp),

   534 				spi.pool + sp->version);

   535 			trans->system.packages[pkg - spkgs] |=

   536 				TRANS_PACKAGE_UPDATE;

   537 		}

   538 	}

   539 }

   540 

   541 RAZOR_EXPORT void

   542 razor_transaction_update_all(struct razor_transaction *trans)

   543 {

   544 	struct razor_package *p;

   545 	int i, count;

   546 

   547 	assert (trans != NULL);

   548 

   549 	count = trans->system.set->packages.size / sizeof *p;

   550 	for (i = 0; i < count; i++)

   551 		trans->system.packages[i] |= TRANS_PACKAGE_UPDATE;

   552 }

   553 

   554 static void

   555 update_conflicted_packages(struct razor_transaction *trans)

   556 {

   557 	struct razor_package *pkg, *spkgs;

   558 	struct razor_property *up, *sp;

   559 	struct prop_iter spi, upi;

   560 	struct razor_package_iterator pkg_iter;

   561 	const char *name, *version;

   562 

   563 	spkgs = trans->system.set->packages.data;

   564 	prop_iter_init(&spi, &trans->system);

   565 	prop_iter_init(&upi, &trans->upstream);

   566 

   567 	while (prop_iter_next(&spi, RAZOR_PROPERTY_CONFLICTS, &sp)) {

   568 		if (!prop_iter_seek_to(&upi, RAZOR_PROPERTY_PROVIDES,

   569 				       &spi.pool[sp->name]))

   570 			continue;

   571 

   572 		if (!any_provider_satisfies_requirement(&upi, sp->flags,

   573 							&spi.pool[sp->version]))

   574 			continue;

   575 

   576 		razor_package_iterator_init_for_property(&pkg_iter,

   577 							 trans->system.set,

   578 							 sp);

   579 		while (razor_package_iterator_next(&pkg_iter, &pkg,

   580 						   RAZOR_DETAIL_NAME, &name,

   581 						   RAZOR_DETAIL_VERSION, &version, 0)) {

   582 			fprintf(stderr, "updating %s %s because it "

   583 				"conflicts with %s\n",

   584 				name, version, spi.pool + sp->name);

   585 			trans->system.packages[pkg - spkgs] |=

   586 				TRANS_PACKAGE_UPDATE;

   587 		}

   588 	}

   589 

   590 	prop_iter_init(&spi, &trans->system);

   591 	prop_iter_init(&upi, &trans->upstream);

   592 

   593 	while (prop_iter_next(&upi, RAZOR_PROPERTY_CONFLICTS, &up)) {

   594 		sp = prop_iter_seek_to(&spi, RAZOR_PROPERTY_PROVIDES,

   595 				       &upi.pool[upi.p->name]);

   596 

   597 		if (sp)

   598 			flag_matching_providers(trans, &spi, up, &upi,

   599 						TRANS_PACKAGE_UPDATE);

   600 	}

   601 }

   602 

   603 static void

   604 pull_in_requirements(struct razor_transaction *trans,

   605 		     struct prop_iter *rpi, struct prop_iter *ppi)

   606 {

   607 	struct razor_property *rp, *pp;

   608 	struct razor_package *pkg, *upkgs;

   609 

   610 	upkgs = trans->upstream.set->packages.data;

   611 	while (prop_iter_next(rpi, RAZOR_PROPERTY_REQUIRES, &rp)) {

   612 		if (rpi->present[rp - rpi->start] & TRANS_PROPERTY_SATISFIED)

   613 			continue;

   614 

   615 		pp = prop_iter_seek_to(ppi, RAZOR_PROPERTY_PROVIDES,

   616 				       &rpi->pool[rp->name]);

   617 		if (pp == NULL)

   618 			continue;

   619 		pkg = pick_matching_provider(trans->upstream.set,

   620 					     ppi, rp->flags,

   621 					     &rpi->pool[rp->version]);

   622 		if (pkg == NULL)

   623 			continue;

   624 

   625 		rpi->present[rp - rpi->start] |= TRANS_PROPERTY_SATISFIED;

   626 

   627 		fprintf(stderr, "pulling in %s-%s.%s which provides %s %s %s "

   628 			"to satisfy %s %s %s\n",

   629 			ppi->pool + pkg->name,

   630 			ppi->pool + pkg->version,

   631 			ppi->pool + pkg->arch,

   632 			ppi->pool + pp->name,

   633 			razor_property_relation_to_string(pp),

   634 			ppi->pool + pp->version,

   635 			&rpi->pool[rp->name],

   636 			razor_property_relation_to_string(rp),

   637 			&rpi->pool[rp->version]);

   638 

   639 		trans->upstream.packages[pkg - upkgs] |= TRANS_PACKAGE_UPDATE;

   640 	}

   641 }

   642 

   643 static void

   644 pull_in_all_requirements(struct razor_transaction *trans)

   645 {

   646 	struct prop_iter rpi, ppi;

   647 

   648 	prop_iter_init(&rpi, &trans->system);

   649 	prop_iter_init(&ppi, &trans->upstream);

   650 	pull_in_requirements(trans, &rpi, &ppi);

   651 

   652 	prop_iter_init(&rpi, &trans->upstream);

   653 	prop_iter_init(&ppi, &trans->upstream);

   654 	pull_in_requirements(trans, &rpi, &ppi);

   655 }

   656 

   657 static void

   658 flush_scheduled_system_updates(struct razor_transaction *trans)

   659 {

   660  	struct razor_package_iterator *pi;

   661  	struct razor_package *p, *pkg, *spkgs;

   662 	struct prop_iter ppi;

   663 	const char *name, *version;

   664 

   665 	spkgs = trans->system.set->packages.data;

   666 	pi = razor_package_iterator_create(trans->system.set);

   667 	prop_iter_init(&ppi, &trans->upstream);

   668 

   669 	while (razor_package_iterator_next(pi, &p,

   670 					   RAZOR_DETAIL_NAME, &name,

   671 					   RAZOR_DETAIL_VERSION, &version, 0)) {

   672 		if (!(trans->system.packages[p - spkgs] & TRANS_PACKAGE_UPDATE))

   673 			continue;

   674 

   675 		if (!prop_iter_seek_to(&ppi, RAZOR_PROPERTY_PROVIDES, name))

   676 			continue;

   677 

   678 		pkg = pick_matching_provider(trans->upstream.set, &ppi,

   679 					     RAZOR_PROPERTY_GREATER, version);

   680 		if (pkg == NULL)

   681 			continue;

   682 

   683 		fprintf(stderr, "updating %s-%s to %s-%s\n",

   684 			name, version,

   685 			&ppi.pool[pkg->name], &ppi.pool[pkg->version]);

   686 

   687 		razor_transaction_remove_package(trans, p);

   688 		razor_transaction_install_package(trans, pkg);

   689 	}

   690 

   691 	razor_package_iterator_destroy(pi);

   692 }

   693 

   694 static void

   695 flush_scheduled_upstream_updates(struct razor_transaction *trans)

   696 {

   697  	struct razor_package_iterator *pi;

   698  	struct razor_package *p, *upkgs;

   699 	struct prop_iter spi;

   700 	const char *name, *version;

   701 

   702 	upkgs = trans->upstream.set->packages.data;

   703 	pi = razor_package_iterator_create(trans->upstream.set);

   704 	prop_iter_init(&spi, &trans->system);

   705 

   706 	while (razor_package_iterator_next(pi, &p,

   707 					   RAZOR_DETAIL_NAME, &name,

   708 					   RAZOR_DETAIL_VERSION, &version, 0)) {

   709 		if (!(trans->upstream.packages[p - upkgs] & TRANS_PACKAGE_UPDATE))

   710 			continue;

   711 

   712 		if (prop_iter_seek_to(&spi, RAZOR_PROPERTY_PROVIDES, name))

   713 			remove_matching_providers(trans,

   714 						  &spi,

   715 						  RAZOR_PROPERTY_LESS,

   716 						  version);

   717 		razor_transaction_install_package(trans, p);

   718 		fprintf(stderr, "installing %s-%s\n", name, version);

   719 	}

   720 }

   721 

   722 RAZOR_EXPORT int

   723 razor_transaction_resolve(struct razor_transaction *trans)

   724 {

   725 	int last = 0;

   726 

   727 	flush_scheduled_system_updates(trans);

   728 	flush_scheduled_upstream_updates(trans);

   729 

   730 	while (last < trans->changes) {

   731 		last = trans->changes;

   732 		remove_obsoleted_packages(trans);

   733 		mark_all_satisfied_requires(trans);

   734 		update_unsatisfied_packages(trans);

   735 		update_conflicted_packages(trans);

   736 		pull_in_all_requirements(trans);

   737 		flush_scheduled_system_updates(trans);

   738 		flush_scheduled_upstream_updates(trans);

   739 	}

   740 

   741 	return trans->changes;

   742 }

   743 

   744 static void

   745 describe_unsatisfied(struct razor_set *set, struct razor_property *rp)

   746 {

   747 	struct razor_package_iterator pi;

   748 	struct razor_package *pkg;

   749 	const char *name, *version, *arch, *pool;

   750 

   751 	pool = set->string_pool.data;

   752 	if (pool[rp->version] == '\0') {

   753 		razor_package_iterator_init_for_property(&pi, set, rp);

   754 		while (razor_package_iterator_next(&pi, &pkg,

   755 						   RAZOR_DETAIL_NAME, &name,

   756 						   RAZOR_DETAIL_VERSION, &version,

   757 						   RAZOR_DETAIL_ARCH, &arch, 0))

   758 			fprintf(stderr, "%s is needed by %s-%s.%s\n",

   759 				&pool[rp->name],

   760 				name, version, arch);

   761 	} else {

   762 		razor_package_iterator_init_for_property(&pi, set, rp);

   763 		while (razor_package_iterator_next(&pi, &pkg,

   764 						   RAZOR_DETAIL_NAME, &name,

   765 						   RAZOR_DETAIL_VERSION, &version,

   766 						   RAZOR_DETAIL_ARCH, &arch, 0))

   767 			fprintf(stderr, "%s %s %s is needed by %s-%s.%s\n",

   768 				&pool[rp->name],

   769 				razor_property_relation_to_string(rp),

   770 				&pool[rp->version],

   771 				name, version, arch);

   772 	}

   773 }

   774 

   775 RAZOR_EXPORT int

   776 razor_transaction_describe(struct razor_transaction *trans)

   777 {

   778 	struct prop_iter rpi;

   779 	struct razor_property *rp;

   780 	int unsatisfied;

   781 

   782 	flush_scheduled_system_updates(trans);

   783 	flush_scheduled_upstream_updates(trans);

   784 	mark_all_satisfied_requires(trans);

   785 

   786 	unsatisfied = 0;

   787 	prop_iter_init(&rpi, &trans->system);

   788 	while (prop_iter_next(&rpi, RAZOR_PROPERTY_REQUIRES, &rp)) {

   789 		if (!(rpi.present[rp - rpi.start] & TRANS_PROPERTY_SATISFIED)) {

   790 			describe_unsatisfied(trans->system.set, rp);

   791 		        unsatisfied++;

   792 		}

   793 	}

   794 

   795 	prop_iter_init(&rpi, &trans->upstream);

   796 	while (prop_iter_next(&rpi, RAZOR_PROPERTY_REQUIRES, &rp)) {

   797 		if (!(rpi.present[rp - rpi.start] & TRANS_PROPERTY_SATISFIED)) {

   798 			describe_unsatisfied(trans->upstream.set, rp);

   799 			unsatisfied++;

   800 		}

   801 	}

   802 

   803 	return unsatisfied;

   804 }

   805 

   806 RAZOR_EXPORT int

   807 razor_transaction_unsatisfied_property(struct razor_transaction *trans,

   808 				       const char *name,

   809 				       uint32_t flags,

   810 				       const char *version)

   811 {

   812 	struct prop_iter pi;

   813 	struct razor_property *p;

   814 

   815 	prop_iter_init(&pi, &trans->system);

   816 	while (prop_iter_next(&pi, flags & RAZOR_PROPERTY_TYPE_MASK, &p)) {

   817 		if (!(trans->system.properties[p - pi.start] & TRANS_PROPERTY_SATISFIED) &&

   818 		    p->flags == flags &&

   819 		    strcmp(&pi.pool[p->name], name) == 0 &&

   820 		    strcmp(&pi.pool[p->version], version) == 0)

   821 

   822 			return 1;

   823 	}

   824 

   825 	prop_iter_init(&pi, &trans->upstream);

   826 	while (prop_iter_next(&pi, flags & RAZOR_PROPERTY_TYPE_MASK, &p)) {

   827 		if (!(trans->upstream.properties[p - pi.start] & TRANS_PROPERTY_SATISFIED) &&

   828 		    p->flags == flags &&

   829 		    strcmp(&pi.pool[p->name], name) == 0 &&

   830 		    strcmp(&pi.pool[p->version], version) == 0)

   831 

   832 			return 1;

   833 	}

   834 

   835 	return 0;

   836 }

   837 

   838 RAZOR_EXPORT struct razor_set *

   839 razor_transaction_finish(struct razor_transaction *trans)

   840 {

   841 	struct razor_merger *merger;

   842 	struct razor_package *u, *uend, *upkgs, *s, *send, *spkgs;

   843 	char *upool, *spool;

   844 	int cmp;

   845 

   846 	s = trans->system.set->packages.data;

   847 	spkgs = trans->system.set->packages.data;

   848 	send = trans->system.set->packages.data +

   849 		trans->system.set->packages.size;

   850 	spool = trans->system.set->string_pool.data;

   851 

   852 	u = trans->upstream.set->packages.data;

   853 	upkgs = trans->upstream.set->packages.data;

   854 	uend = trans->upstream.set->packages.data +

   855 		trans->upstream.set->packages.size;

   856 	upool = trans->upstream.set->string_pool.data;

   857 

   858 	merger = razor_merger_create(trans->system.set, trans->upstream.set);

   859 	while (s < send || u < uend) {

   860 		if (s < send && u < uend)

   861 			cmp = strcmp(&spool[s->name], &upool[u->name]);

   862 		else if (s < send)

   863 			cmp = -1;

   864 		else

   865 			cmp = 1;

   866 

   867 		if (cmp < 0) {

   868 			if (trans->system.packages[s - spkgs] & TRANS_PACKAGE_PRESENT)

   869 				razor_merger_add_package(merger, s);

   870 			s++;

   871 		} else if (cmp == 0) {

   872 			if (trans->system.packages[s - spkgs] & TRANS_PACKAGE_PRESENT)

   873 				razor_merger_add_package(merger, s);

   874 			if (trans->upstream.packages[u - upkgs] & TRANS_PACKAGE_PRESENT)

   875 				razor_merger_add_package(merger, u);

   876 

   877 			s++;

   878 			u++;

   879 		} else {

   880 			if (trans->upstream.packages[u - upkgs] & TRANS_PACKAGE_PRESENT)

   881 				razor_merger_add_package(merger, u);

   882 			u++;

   883 		}

   884 	}

   885 

   886 	razor_transaction_destroy(trans);

   887 

   888 	return razor_merger_finish(merger);

   889 }

   890 

   891 RAZOR_EXPORT void

   892 razor_transaction_destroy(struct razor_transaction *trans)

   893 {

   894 	assert (trans != NULL);

   895 

   896 	transaction_set_release(&trans->system);

   897 	transaction_set_release(&trans->upstream);

   898 	free(trans);

   899 }
razor