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librazor/transaction.c
author Kristian H?gsberg <krh@redhat.com>
Fri Jul 03 19:06:29 2009 +0100 (2009-07-03)
changeset 373 fda83d91e600
parent 368 ea743486ba6f
child 386 3d3fab314c4e
permissions -rw-r--r--
Go back to having all info in one rzdb file.

We can still split the rzdb file into a main file and a file data and a details file, but that's only for optimizing the required download size. On the system we always combine the parts back into one rzdb file once downloaded.

committer: J. Ali Harlow <ali@juiblex.co.uk> 
     1 /*

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

     3  * Copyright (C) 2008  Red Hat, Inc

     4  * Copyright (C) 2009  J. Ali Harlow <ali@juiblex.co.uk>

     5  *

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

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

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

     9  * (at your option) any later version.

    10  *

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

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

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

    14  * GNU General Public License for more details.

    15  *

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

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

    18  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

    19  */

    20 

    21 #define _GNU_SOURCE

    22 

    23 #include <stdlib.h>

    24 #include <stddef.h>

    25 #include <stdint.h>

    26 #include <stdio.h>

    27 #include <string.h>

    28 #include <sys/types.h>

    29 #include <sys/stat.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 	struct razor_merger *merger;

   105 };

   106 

   107 static void

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

   109 {

   110 	int count;

   111 

   112 	ts->set = set;

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

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

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

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

   117 }

   118 

   119 static void

   120 transaction_set_release(struct transaction_set *ts)

   121 {

   122 	free(ts->packages);

   123 	free(ts->properties);

   124 }

   125 

   126 static void

   127 transaction_set_install_package(struct transaction_set *ts,

   128 				struct razor_package *package)

   129 {

   130 	struct razor_package *pkgs;

   131 	struct list *prop;

   132 	int i;

   133 

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

   135 	i = package - pkgs;

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

   137 		return;

   138 

   139 	ts->packages[i] = TRANS_PACKAGE_PRESENT;

   140 

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

   142 	while (prop) {

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

   144 		prop = list_next(prop);

   145 	}

   146 }

   147 

   148 static void

   149 transaction_set_remove_package(struct transaction_set *ts,

   150 			       struct razor_package *package)

   151 {

   152 	struct razor_package *pkgs;

   153 	struct list *prop;

   154 	int i;

   155 

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

   157 	i = package - pkgs;

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

   159 		return;

   160 

   161 	ts->packages[i] = 0;

   162 

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

   164 	while (prop) {

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

   166 		prop = list_next(prop);

   167 	}

   168 }

   169 

   170 RAZOR_EXPORT struct razor_transaction *

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

   172 {

   173 	struct razor_transaction *trans;

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

   175 

   176 	trans = zalloc(sizeof *trans);

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

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

   179 

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

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

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

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

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

   185 

   186 	return trans;

   187 }

   188 

   189 RAZOR_EXPORT void

   190 razor_transaction_install_package(struct razor_transaction *trans,

   191 				  struct razor_package *package)

   192 {

   193 	assert (trans != NULL);

   194 	assert (package != NULL);

   195 

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

   197 	trans->changes++;

   198 }

   199 

   200 RAZOR_EXPORT void

   201 razor_transaction_remove_package(struct razor_transaction *trans,

   202 				 struct razor_package *package)

   203 {

   204 	assert (trans != NULL);

   205 	assert (package != NULL);

   206 

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

   208 	trans->changes++;

   209 }

   210 

   211 RAZOR_EXPORT void

   212 razor_transaction_update_package(struct razor_transaction *trans,

   213 				  struct razor_package *package)

   214 {

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

   216 

   217 	assert (trans != NULL);

   218 	assert (package != NULL);

   219 

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

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

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

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

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

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

   226 	else

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

   228 }

   229 

   230 struct prop_iter {

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

   232 	const char *pool;

   233 	uint32_t *present;

   234 };

   235 

   236 static void

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

   238 {

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

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

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

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

   243 	pi->present = ts->properties;

   244 }

   245 

   246 static int

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

   248 {

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

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

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

   252 			*p = pi->p++;

   253 			return 1;

   254 		}

   255 		pi->p++;

   256 	}

   257 

   258 	return 0;

   259 }

   260 

   261 static struct razor_property *

   262 prop_iter_seek_to(struct prop_iter *pi,

   263 		  uint32_t flags, const char *match)

   264 {

   265 	uint32_t name;

   266 

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

   268 		pi->p++;

   269 

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

   271 		return NULL;

   272 

   273 	name = pi->p->name;

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

   275 	       pi->p->name == name &&

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

   277 		pi->p++;

   278 

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

   280 		return NULL;

   281 

   282 	return pi->p;

   283 }

   284 

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

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

   287  * requirement that rpi points to. */

   288 static void

   289 remove_matching_providers(struct razor_transaction *trans,

   290 			  struct prop_iter *ppi,

   291 			  uint32_t flags,

   292 			  const char *version)

   293 {

   294 	struct razor_property *p;

   295 	struct razor_package *pkg, *pkgs;

   296 	struct razor_package_iterator pkg_iter;

   297 	struct razor_set *set;

   298 	const char *n, *v;

   299 	uint32_t type;

   300 

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

   302 		set = trans->system.set;

   303 	else

   304 		set = trans->upstream.set;

   305 

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

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

   308 	for (p = ppi->p;

   309 	     p < ppi->end &&

   310 	     p->name == ppi->p->name &&

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

   312 	     p++) {

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

   314 			continue;

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

   316 						    flags, version))

   317 			continue;

   318 

   319 		razor_package_iterator_init_for_property(&pkg_iter, set, p);

   320 		while (razor_package_iterator_next(&pkg_iter, &pkg,

   321 						   RAZOR_DETAIL_NAME, &n,

   322 						   RAZOR_DETAIL_VERSION, &v,

   323 						   RAZOR_DETAIL_LAST)) {

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

   325 			razor_transaction_remove_package(trans, pkg);

   326 		}

   327 	}

   328 }

   329 

   330 static void

   331 flag_matching_providers(struct razor_transaction *trans,

   332 			struct prop_iter *ppi,

   333 			struct razor_property *r,

   334 			struct prop_iter *rpi,

   335 			unsigned int flag)

   336 {

   337 	struct razor_property *p;

   338 	struct razor_package *pkg, *pkgs;

   339 	struct razor_package_iterator pkg_iter;

   340 	struct razor_set *set;

   341 	const char *name, *version;

   342 	uint32_t *flags, type;

   343 

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

   345 		set = trans->system.set;

   346 		flags = trans->system.packages;

   347 	} else {

   348 		set = trans->upstream.set;

   349 		flags = trans->upstream.packages;

   350 	}

   351 

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

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

   354 	for (p = ppi->p;

   355 	     p < ppi->end &&

   356 		     p->name == ppi->p->name &&

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

   358 	     p++) {

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

   360 			continue;

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

   362 						    r->flags,

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

   364 			continue;

   365 

   366 		razor_package_iterator_init_for_property(&pkg_iter, set, p);

   367 		while (razor_package_iterator_next(&pkg_iter, &pkg,

   368 						   RAZOR_DETAIL_NAME, &name,

   369 						   RAZOR_DETAIL_VERSION, &version,

   370 						   RAZOR_DETAIL_LAST)) {

   371 

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

   373 				name, version,

   374 				ppi->pool + p->name,

   375 				rpi->pool + r->name,

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

   377 			flags[pkg - pkgs] |= flag;

   378 		}

   379 	}

   380 }

   381 

   382 static struct razor_package *

   383 pick_matching_provider(struct razor_set *set,

   384 		       struct prop_iter *ppi,

   385 		       uint32_t flags,

   386 		       const char *version)

   387 {

   388 	struct razor_property *p;

   389 	struct razor_package *pkgs;

   390 	struct list *i;

   391 	uint32_t type;

   392 

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

   394 	 * requirement.  There may be several different providers

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

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

   397 	 * from the first provider that matches. */

   398 

   399 	pkgs = set->packages.data;

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

   401 	for (p = ppi->p;

   402 	     p < ppi->end &&

   403 		     p->name == ppi->p->name &&

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

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

   406 	     p++) {

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

   408 						    flags, version))

   409 			continue;

   410 

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

   412 

   413 		return &pkgs[i->data];

   414 	}

   415 

   416 	return NULL;

   417 }

   418 

   419 static void

   420 remove_obsoleted_packages(struct razor_transaction *trans)

   421 {

   422 	struct razor_property *up;

   423 	struct razor_package *spkgs;

   424 	struct prop_iter spi, upi;

   425 

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

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

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

   429 

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

   431 		if (!prop_iter_seek_to(&spi, RAZOR_PROPERTY_PROVIDES,

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

   433 			continue;

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

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

   436 	}

   437 }

   438 

   439 static int

   440 any_provider_satisfies_requirement(struct prop_iter *ppi,

   441 				   uint32_t flags,

   442 				   const char *version)

   443 {

   444 	struct razor_property *p;

   445 	uint32_t type;

   446 

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

   448 	for (p = ppi->p;

   449 	     p < ppi->end &&

   450 		     p->name == ppi->p->name &&

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

   452 	     p++) {

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

   454 		    provider_satisfies_requirement(p, ppi->pool,

   455 						   flags, version))

   456 			return 1;

   457 	}

   458 

   459 	return 0;

   460 }

   461 

   462 static void

   463 clear_requires_flags(struct transaction_set *ts)

   464 {

   465 	struct razor_property *p;

   466 	const char *pool;

   467 	int i, count;

   468 	char *sub;

   469 

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

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

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

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

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

   475 		sub = strchr(&pool[p[i].name], '(');

   476 		if (sub && sub[strlen(sub) - 1] == ')') {

   477 			sub = strdup(sub + 1);

   478 			sub[strlen(sub) - 1] = '\0';

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

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

   481 			if (strncmp(&pool[p[i].name], "lua(", 4) == 0 &&

   482 			    razor_get_lua_loader(sub) &&

   483 			    p[i].flags & RAZOR_PROPERTY_SCRIPT_MASK)

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

   485 			free(sub);

   486 		}

   487 	}

   488 }

   489 

   490 static void

   491 mark_satisfied_requires(struct razor_transaction *trans,

   492 			struct transaction_set *rts,

   493 			struct transaction_set *pts)

   494 {

   495 	struct prop_iter rpi, ppi;

   496 	struct razor_property *rp;

   497 

   498 	prop_iter_init(&rpi, rts);

   499 	prop_iter_init(&ppi, pts);

   500 

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

   502 		if (!prop_iter_seek_to(&ppi, RAZOR_PROPERTY_PROVIDES,

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

   504 			continue;

   505 

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

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

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

   509 	}

   510 }

   511 

   512 static void

   513 mark_all_satisfied_requires(struct razor_transaction *trans)

   514 {

   515 	clear_requires_flags(&trans->system);

   516 	clear_requires_flags(&trans->upstream);

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

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

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

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

   521 }

   522 

   523 static void

   524 update_unsatisfied_packages(struct razor_transaction *trans)

   525 {

   526 	struct razor_package *spkgs, *pkg;

   527 	struct razor_property *sp;

   528 	struct prop_iter spi;

   529 	struct razor_package_iterator pkg_iter;

   530 	const char *name;

   531 

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

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

   534 

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

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

   537 			continue;

   538 

   539 		razor_package_iterator_init_for_property(&pkg_iter,

   540 							 trans->system.set,

   541 							 sp);

   542 		while (razor_package_iterator_next(&pkg_iter, &pkg,

   543 						   RAZOR_DETAIL_NAME, &name,

   544 						   RAZOR_DETAIL_LAST)) {

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

   546 				"isn't satisfied\n",

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

   548 				razor_property_relation_to_string(sp),

   549 				spi.pool + sp->version);

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

   551 				TRANS_PACKAGE_UPDATE;

   552 		}

   553 	}

   554 }

   555 

   556 RAZOR_EXPORT void

   557 razor_transaction_update_all(struct razor_transaction *trans)

   558 {

   559 	struct razor_package *p;

   560 	int i, count;

   561 

   562 	assert (trans != NULL);

   563 

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

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

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

   567 }

   568 

   569 static void

   570 update_conflicted_packages(struct razor_transaction *trans)

   571 {

   572 	struct razor_package *pkg, *spkgs;

   573 	struct razor_property *up, *sp;

   574 	struct prop_iter spi, upi;

   575 	struct razor_package_iterator pkg_iter;

   576 	const char *name, *version;

   577 

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

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

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

   581 

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

   583 		if (!prop_iter_seek_to(&upi, RAZOR_PROPERTY_PROVIDES,

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

   585 			continue;

   586 

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

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

   589 			continue;

   590 

   591 		razor_package_iterator_init_for_property(&pkg_iter,

   592 							 trans->system.set,

   593 							 sp);

   594 		while (razor_package_iterator_next(&pkg_iter, &pkg,

   595 						   RAZOR_DETAIL_NAME, &name,

   596 						   RAZOR_DETAIL_VERSION, &version,

   597 						   RAZOR_DETAIL_LAST)) {

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

   599 				"conflicts with %s\n",

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

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

   602 				TRANS_PACKAGE_UPDATE;

   603 		}

   604 	}

   605 

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

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

   608 

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

   610 		sp = prop_iter_seek_to(&spi, RAZOR_PROPERTY_PROVIDES,

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

   612 

   613 		if (sp)

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

   615 						TRANS_PACKAGE_UPDATE);

   616 	}

   617 }

   618 

   619 static void

   620 pull_in_requirements(struct razor_transaction *trans,

   621 		     struct prop_iter *rpi, struct prop_iter *ppi)

   622 {

   623 	struct razor_property *rp, *pp;

   624 	struct razor_package *pkg, *upkgs;

   625 

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

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

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

   629 			continue;

   630 

   631 		pp = prop_iter_seek_to(ppi, RAZOR_PROPERTY_PROVIDES,

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

   633 		if (pp == NULL)

   634 			continue;

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

   636 					     ppi, rp->flags,

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

   638 		if (pkg == NULL)

   639 			continue;

   640 

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

   642 

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

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

   645 			ppi->pool + pkg->name,

   646 			ppi->pool + pkg->version,

   647 			ppi->pool + pkg->arch,

   648 			ppi->pool + pp->name,

   649 			razor_property_relation_to_string(pp),

   650 			ppi->pool + pp->version,

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

   652 			razor_property_relation_to_string(rp),

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

   654 

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

   656 	}

   657 }

   658 

   659 static void

   660 pull_in_all_requirements(struct razor_transaction *trans)

   661 {

   662 	struct prop_iter rpi, ppi;

   663 

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

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

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

   667 

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

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

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

   671 }

   672 

   673 static void

   674 flush_scheduled_system_updates(struct razor_transaction *trans)

   675 {

   676  	struct razor_package_iterator *pi;

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

   678 	struct prop_iter ppi;

   679 	const char *name, *version;

   680 

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

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

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

   684 

   685 	while (razor_package_iterator_next(pi, &p,

   686 					   RAZOR_DETAIL_NAME, &name,

   687 					   RAZOR_DETAIL_VERSION, &version,

   688 					   RAZOR_DETAIL_LAST)) {

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

   690 			continue;

   691 

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

   693 			continue;

   694 

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

   696 					     RAZOR_PROPERTY_GREATER, version);

   697 		if (pkg == NULL)

   698 			continue;

   699 

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

   701 			name, version,

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

   703 

   704 		razor_transaction_remove_package(trans, p);

   705 		razor_transaction_install_package(trans, pkg);

   706 	}

   707 

   708 	razor_package_iterator_destroy(pi);

   709 }

   710 

   711 static void

   712 flush_scheduled_upstream_updates(struct razor_transaction *trans)

   713 {

   714  	struct razor_package_iterator *pi;

   715  	struct razor_package *p, *upkgs;

   716 	struct prop_iter spi;

   717 	const char *name, *version;

   718 

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

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

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

   722 

   723 	while (razor_package_iterator_next(pi, &p,

   724 					   RAZOR_DETAIL_NAME, &name,

   725 					   RAZOR_DETAIL_VERSION, &version,

   726 					   RAZOR_DETAIL_LAST)) {

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

   728 			continue;

   729 

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

   731 			remove_matching_providers(trans,

   732 						  &spi,

   733 						  RAZOR_PROPERTY_LESS,

   734 						  version);

   735 		razor_transaction_install_package(trans, p);

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

   737 	}

   738 }

   739 

   740 RAZOR_EXPORT int

   741 razor_transaction_resolve(struct razor_transaction *trans)

   742 {

   743 	int last = 0;

   744 

   745 	flush_scheduled_system_updates(trans);

   746 	flush_scheduled_upstream_updates(trans);

   747 

   748 	while (last < trans->changes) {

   749 		last = trans->changes;

   750 		remove_obsoleted_packages(trans);

   751 		mark_all_satisfied_requires(trans);

   752 		update_unsatisfied_packages(trans);

   753 		update_conflicted_packages(trans);

   754 		pull_in_all_requirements(trans);

   755 		flush_scheduled_system_updates(trans);

   756 		flush_scheduled_upstream_updates(trans);

   757 	}

   758 

   759 	return trans->changes;

   760 }

   761 

   762 static void

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

   764 {

   765 	struct razor_package_iterator pi;

   766 	struct razor_package *pkg;

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

   768 

   769 	pool = set->string_pool.data;

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

   771 		razor_package_iterator_init_for_property(&pi, set, rp);

   772 		while (razor_package_iterator_next(&pi, &pkg,

   773 						   RAZOR_DETAIL_NAME, &name,

   774 						   RAZOR_DETAIL_VERSION, &version,

   775 						   RAZOR_DETAIL_ARCH, &arch,

   776 						   RAZOR_DETAIL_LAST))

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

   778 				&pool[rp->name],

   779 				name, version, arch);

   780 	} else {

   781 		razor_package_iterator_init_for_property(&pi, set, rp);

   782 		while (razor_package_iterator_next(&pi, &pkg,

   783 						   RAZOR_DETAIL_NAME, &name,

   784 						   RAZOR_DETAIL_VERSION, &version,

   785 						   RAZOR_DETAIL_ARCH, &arch,

   786 						   RAZOR_DETAIL_LAST))

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

   788 				&pool[rp->name],

   789 				razor_property_relation_to_string(rp),

   790 				&pool[rp->version],

   791 				name, version, arch);

   792 	}

   793 }

   794 

   795 RAZOR_EXPORT int

   796 razor_transaction_describe(struct razor_transaction *trans)

   797 {

   798 	struct prop_iter rpi;

   799 	struct razor_property *rp;

   800 	int unsatisfied;

   801 

   802 	flush_scheduled_system_updates(trans);

   803 	flush_scheduled_upstream_updates(trans);

   804 	mark_all_satisfied_requires(trans);

   805 

   806 	unsatisfied = 0;

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

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

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

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

   811 		        unsatisfied++;

   812 		}

   813 	}

   814 

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

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

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

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

   819 			unsatisfied++;

   820 		}

   821 	}

   822 

   823 	return unsatisfied;

   824 }

   825 

   826 RAZOR_EXPORT int

   827 razor_transaction_unsatisfied_property(struct razor_transaction *trans,

   828 				       const char *name,

   829 				       uint32_t flags,

   830 				       const char *version)

   831 {

   832 	struct prop_iter pi;

   833 	struct razor_property *p;

   834 

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

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

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

   838 		    p->flags == flags &&

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

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

   841 

   842 			return 1;

   843 	}

   844 

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

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

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

   848 		    p->flags == flags &&

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

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

   851 

   852 			return 1;

   853 	}

   854 

   855 	return 0;

   856 }

   857 

   858 RAZOR_EXPORT struct razor_set *

   859 razor_transaction_commit(struct razor_transaction *trans)

   860 {

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

   862 	char *upool, *spool;

   863 	int cmp;

   864 

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

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

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

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

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

   870 

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

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

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

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

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

   876 

   877 	trans->merger = razor_merger_create(trans->system.set,

   878 					    trans->upstream.set);

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

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

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

   882 		else if (s < send)

   883 			cmp = -1;

   884 		else

   885 			cmp = 1;

   886 

   887 		if (cmp < 0) {

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

   889 				razor_merger_add_package(trans->merger, s);

   890 			s++;

   891 		} else if (cmp == 0) {

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

   893 				razor_merger_add_package(trans->merger, s);

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

   895 				razor_merger_add_package(trans->merger, u);

   896 

   897 			s++;

   898 			u++;

   899 		} else {

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

   901 				razor_merger_add_package(trans->merger, u);

   902 			u++;

   903 		}

   904 	}

   905 

   906 	return razor_merger_commit(trans->merger);

   907 }

   908 

   909 RAZOR_EXPORT void

   910 razor_transaction_fixup_package(struct razor_transaction *trans,

   911 				struct razor_package *package,

   912 				struct razor_rpm *rpm)

   913 {

   914 	const char *preunprog, *preun, *postunprog, *postun;

   915 

   916 	razor_rpm_get_details(rpm,

   917 			      RAZOR_DETAIL_PREUNPROG, &preunprog,

   918 			      RAZOR_DETAIL_PREUN, &preun,

   919 			      RAZOR_DETAIL_POSTUNPROG, &postunprog,

   920 			      RAZOR_DETAIL_POSTUN, &postun,

   921 			      RAZOR_DETAIL_LAST);

   922 

   923 	razor_merger_package_add_script(trans->merger, package,

   924 					RAZOR_PROPERTY_PREUN,

   925 					preunprog, preun);

   926 	razor_merger_package_add_script(trans->merger, package,

   927 					RAZOR_PROPERTY_POSTUN,

   928 					postunprog, postun);

   929 }

   930 

   931 RAZOR_EXPORT void

   932 razor_transaction_destroy(struct razor_transaction *trans)

   933 {

   934 	assert (trans != NULL);

   935 

   936 	if (trans->merger)

   937 		razor_merger_destroy(trans->merger);

   938 	transaction_set_release(&trans->system);

   939 	transaction_set_release(&trans->upstream);

   940 	free(trans);

   941 }
razor