razor: razor.c@cf0ca962262b

     1 #define _GNU_SOURCE

     3 #include <stdlib.h>

     4 #include <stddef.h>

     5 #include <stdint.h>

     6 #include <stdio.h>

     7 #include <string.h>

     8 #include <sys/types.h>

     9 #include <sys/stat.h>

    10 #include <sys/mman.h>

    11 #include <unistd.h>

    12 #include <fcntl.h>

    13 #include <errno.h>

    14 #include <ctype.h>

    15 #include <fnmatch.h>

    17 #include "razor.h"

    18 #include "razor-internal.h"

    19 #include "types.h"

    21 struct razor_set_section {

    22 	uint32_t type;

    23 	uint32_t offset;

    24 	uint32_t size;

    25 };

    27 struct razor_set_header {

    28 	uint32_t magic;

    29 	uint32_t version;

    30 	struct razor_set_section sections[0];

    31 };

    33 #define RAZOR_MAGIC 0x7a7a7a7a

    34 #define RAZOR_VERSION 1

    36 #define RAZOR_STRING_POOL	0

    37 #define RAZOR_PACKAGES		1

    38 #define RAZOR_PROPERTIES	2

    39 #define RAZOR_FILES		3

    40 #define RAZOR_PACKAGE_POOL	4

    41 #define RAZOR_PROPERTY_POOL	5

    42 #define RAZOR_FILE_POOL		6

    44 struct razor_package {

    45 	uint name  : 24;

    46 	uint flags : 8;

    47 	uint32_t version;

    48 	uint32_t arch;

    49 	struct list_head properties;

    50 	struct list_head files;

    51 };

    53 struct razor_property {

    54 	uint name  : 24;

    55 	uint flags : 6;

    56 	enum razor_property_type type : 2;

    57 	enum razor_version_relation relation : 32;

    58 	uint32_t version;

    59 	struct list_head packages;

    60 };

    62 struct razor_entry {

    63 	uint name  : 24;

    64 	uint flags : 8;

    65 	uint32_t start;

    66 	struct list_head packages;

    67 };

    69 #define RAZOR_ENTRY_LAST	0x80

    71 struct razor_set {

    72 	struct array string_pool;

    73  	struct array packages;

    74  	struct array properties;

    75  	struct array files;

    76 	struct array package_pool;

    77  	struct array property_pool;

    78  	struct array file_pool;

    79 	struct razor_set_header *header;

    80 };

    82 struct import_entry {

    83 	uint32_t package;

    84 	char *name;

    85 };

    87 struct import_directory {

    88 	uint32_t name, count;

    89 	struct array files;

    90 	struct array packages;

    91 	struct import_directory *last;

    92 };

    94 struct razor_importer {

    95 	struct razor_set *set;

    96 	struct hashtable table;

    97 	struct razor_package *package;

    98 	struct array properties;

    99 	struct array files;

   100 	struct array file_requires;

   101 };

   103 static void *

   104 zalloc(size_t size)

   105 {

   106 	void *p;

   108 	p = malloc(size);

   109 	memset(p, 0, size);

   111 	return p;

   112 }

   114 struct razor_set_section razor_sections[] = {

   115 	{ RAZOR_STRING_POOL,	offsetof(struct razor_set, string_pool) },

   116 	{ RAZOR_PACKAGES,	offsetof(struct razor_set, packages) },

   117 	{ RAZOR_PROPERTIES,	offsetof(struct razor_set, properties) },

   118 	{ RAZOR_FILES,		offsetof(struct razor_set, files) },

   119 	{ RAZOR_PACKAGE_POOL,	offsetof(struct razor_set, package_pool) },

   120 	{ RAZOR_PROPERTY_POOL,	offsetof(struct razor_set, property_pool) },

   121 	{ RAZOR_FILE_POOL,	offsetof(struct razor_set, file_pool) },

   122 };

   124 struct razor_set *

   125 razor_set_create(void)

   126 {

   127 	struct razor_set *set;

   128 	struct razor_entry *e;

   129 	char *empty;

   131 	set = zalloc(sizeof *set);

   133 	e = array_add(&set->files, sizeof *e);

   134 	empty = array_add(&set->string_pool, 1);

   135 	*empty = '\0';

   136 	e->name = 0;

   137 	e->flags = RAZOR_ENTRY_LAST;

   138 	e->start = 0;

   139 	list_set_empty(&e->packages);

   141 	return set;

   142 }

   144 struct razor_set *

   145 razor_set_open(const char *filename)

   146 {

   147 	struct razor_set *set;

   148 	struct razor_set_section *s;

   149 	struct stat stat;

   150 	struct array *array;

   151 	int fd;

   153 	set = zalloc(sizeof *set);

   154 	fd = open(filename, O_RDONLY);

   155 	if (fstat(fd, &stat) < 0)

   156 		return NULL;

   157 	set->header = mmap(NULL, stat.st_size, PROT_READ, MAP_PRIVATE, fd, 0);

   158 	if (set->header == MAP_FAILED) {

   159 		free(set);

   160 		return NULL;

   161 	}

   163 	for (s = set->header->sections; ~s->type; s++) {

   164 		if (s->type >= ARRAY_SIZE(razor_sections))

   165 			continue;

   166 		if (s->type != razor_sections[s->type].type)

   167 			continue;

   168 		array = (void *) set + razor_sections[s->type].offset;

   169 		array->data = (void *) set->header + s->offset;

   170 		array->size = s->size;

   171 		array->alloc = s->size;

   172 	}

   173 	close(fd);

   175 	return set;

   176 }

   178 void

   179 razor_set_destroy(struct razor_set *set)

   180 {

   181 	unsigned int size;

   182 	struct array *a;

   183 	int i;

   185 	if (set->header) {

   186 		for (i = 0; set->header->sections[i].type; i++)

   187 			;

   188 		size = set->header->sections[i].type;

   189 		munmap(set->header, size);

   190 	} else {

   191 		for (i = 0; i < ARRAY_SIZE(razor_sections); i++) {

   192 			a = (void *) set + razor_sections[i].offset;

   193 			free(a->data);

   194 		}

   195 	}

   197 	free(set);

   198 }

   200 int

   201 razor_set_write_to_fd(struct razor_set *set, int fd)

   202 {

   203 	char data[4096];

   204 	struct razor_set_header *header = (struct razor_set_header *) data;

   205 	struct array *a;

   206 	uint32_t offset;

   207 	int i;

   209 	memset(data, 0, sizeof data);

   210 	header->magic = RAZOR_MAGIC;

   211 	header->version = RAZOR_VERSION;

   212 	offset = sizeof data;

   214 	for (i = 0; i < ARRAY_SIZE(razor_sections); i++) {

   215 		if (razor_sections[i].type != i)

   216 			continue;

   217 		a = (void *) set + razor_sections[i].offset;

   218 		header->sections[i].type = i;

   219 		header->sections[i].offset = offset;

   220 		header->sections[i].size = a->size;

   221 		offset += ALIGN(a->size, 4096);

   222 	}

   224 	header->sections[i].type = ~0;

   225 	header->sections[i].offset = 0;

   226 	header->sections[i].size = 0;

   228 	razor_write(fd, data, sizeof data);

   229 	memset(data, 0, sizeof data);

   230 	for (i = 0; i < ARRAY_SIZE(razor_sections); i++) {

   231 		if (razor_sections[i].type != i)

   232 			continue;

   233 		a = (void *) set + razor_sections[i].offset;

   234 		razor_write(fd, a->data, a->size);

   235 		razor_write(fd, data, ALIGN(a->size, 4096) - a->size);

   236 	}

   238 	return 0;

   239 }

   241 int

   242 razor_set_write(struct razor_set *set, const char *filename)

   243 {

   244 	int fd, status;

   246 	fd = open(filename, O_CREAT | O_WRONLY | O_TRUNC, 0666);

   247 	if (fd < 0)

   248 		return -1;

   250 	status = razor_set_write_to_fd(set, fd);

   251 	if (status) {

   252 	    close(fd);

   253 	    return status;

   254 	}

   256 	return close(fd);

   257 }

   259 void

   260 razor_build_evr(char *evr_buf, int size, const char *epoch,

   261 		const char *version, const char *release)

   262 {

   263 	int len;

   265 	if (!version || !*version) {

   266 		*evr_buf = '\0';

   267 		return;

   268 	}

   270 	if (epoch && *epoch && strcmp(epoch, "0") != 0) {

   271 		len = snprintf(evr_buf, size, "%s:", epoch);

   272 		evr_buf += len;

   273 		size -= len;

   274 	}

   275 	len = snprintf(evr_buf, size, "%s", version);

   276 	evr_buf += len;

   277 	size -= len;

   278 	if (release && *release)

   279 		snprintf(evr_buf, size, "-%s", release);

   280 }

   282 void

   283 razor_importer_begin_package(struct razor_importer *importer,

   284 			     const char *name,

   285 			     const char *version,

   286 			     const char *arch)

   287 {

   288 	struct razor_package *p;

   290 	p = array_add(&importer->set->packages, sizeof *p);

   291 	p->name = hashtable_tokenize(&importer->table, name);

   292 	p->flags = 0;

   293 	p->version = hashtable_tokenize(&importer->table, version);

   294 	p->arch = hashtable_tokenize(&importer->table, arch);

   296 	importer->package = p;

   297 	array_init(&importer->properties);

   298 }

   300 void

   301 razor_importer_finish_package(struct razor_importer *importer)

   302 {

   303 	list_set_array(&importer->package->properties,

   304 		       &importer->set->property_pool,

   305 		       &importer->properties,

   306 		       1);

   308 	array_release(&importer->properties);

   309 }

   311 void

   312 razor_importer_add_property(struct razor_importer *importer,

   313 			    const char *name,

   314 			    enum razor_version_relation relation,

   315 			    const char *version,

   316 			    enum razor_property_type type)

   317 {

   318 	struct razor_property *p;

   319 	uint32_t *r;

   321 	p = array_add(&importer->set->properties, sizeof *p);

   322 	p->name = hashtable_tokenize(&importer->table, name);

   323 	p->flags = 0;

   324 	p->type = type;

   325 	p->relation = relation;

   326 	p->version = hashtable_tokenize(&importer->table, version);

   327 	list_set_ptr(&p->packages, importer->package -

   328 		     (struct razor_package *) importer->set->packages.data);

   330 	r = array_add(&importer->properties, sizeof *r);

   331 	*r = p - (struct razor_property *) importer->set->properties.data;

   333 	if (type == RAZOR_PROPERTY_REQUIRES && *name == '/') {

   334 		r = array_add(&importer->file_requires, sizeof *r);

   335 		*r = p->name;

   336 	}

   337 }

   339 void

   340 razor_importer_add_file(struct razor_importer *importer, const char *name)

   341 {

   342 	struct import_entry *e;

   344 	e = array_add(&importer->files, sizeof *e);

   346 	e->package = importer->package -

   347 		(struct razor_package *) importer->set->packages.data;

   348 	e->name = strdup(name);

   349 }

   351 struct razor_importer *

   352 razor_importer_new(void)

   353 {

   354 	struct razor_importer *importer;

   356 	importer = zalloc(sizeof *importer);

   357 	importer->set = razor_set_create();

   358 	hashtable_init(&importer->table, &importer->set->string_pool);

   360 	return importer;

   361 }

   363 /* Destroy an importer without creating the set. */

   364 void

   365 razor_importer_destroy(struct razor_importer *importer)

   366 {

   367 	/* FIXME: write this */

   368 }

   370 static int

   371 versioncmp(const char *s1, const char *s2)

   372 {

   373 	const char *p1, *p2;

   374 	long n1, n2;

   375 	int res;

   377 	n1 = strtol(s1, (char **) &p1, 10);

   378 	n2 = strtol(s2, (char **) &p2, 10);

   380 	/* Epoch; if one but not the other has an epoch set, default

   381 	 * the epoch-less version to 0. */

   382 	res = (*p1 == ':') - (*p2 == ':');

   383 	if (res < 0) {

   384 		n1 = 0;

   385 		p1 = s1;

   386 		p2++;

   387 	} else if (res > 0) {

   388 		p1++;

   389 		n2 = 0;

   390 		p2 = s2;

   391 	}

   393 	if (n1 != n2)

   394 		return n1 - n2;

   395 	while (*p1 && *p2) {

   396 		if (*p1 != *p2)

   397 			return *p1 - *p2;

   398 		p1++;

   399 		p2++;

   400 		if (isdigit(*p1) && isdigit(*p2))

   401 			return versioncmp(p1, p2);

   402 	}

   404 	return *p1 - *p2;

   405 }

   407 static int

   408 compare_packages(const void *p1, const void *p2, void *data)

   409 {

   410 	const struct razor_package *pkg1 = p1, *pkg2 = p2;

   411 	struct razor_set *set = data;

   412 	char *pool = set->string_pool.data;

   414 	/* FIXME: what if the flags are different? */

   415 	if (pkg1->name == pkg2->name)

   416 		return versioncmp(&pool[pkg1->version], &pool[pkg2->version]);

   417 	else

   418 		return strcmp(&pool[pkg1->name], &pool[pkg2->name]);

   419 }

   421 static int

   422 compare_properties(const void *p1, const void *p2, void *data)

   423 {

   424 	const struct razor_property *prop1 = p1, *prop2 = p2;

   425 	struct razor_set *set = data;

   426 	char *pool = set->string_pool.data;

   428 	if (prop1->name != prop2->name)

   429 		return strcmp(&pool[prop1->name], &pool[prop2->name]);

   430 	else if (prop1->type != prop2->type)

   431 		return prop1->type - prop2->type;

   432 	else if (prop1->relation != prop2->relation)

   433 		return prop1->relation - prop2->relation;

   434 	else

   435 		return versioncmp(&pool[prop1->version], &pool[prop2->version]);

   436 }

   438 static uint32_t *

   439 uniqueify_properties(struct razor_set *set)

   440 {

   441 	struct razor_property *rp, *up, *rp_end;

   442 	struct array *pkgs, *p;

   443 	struct list_head *r;

   444 	uint32_t *map, *rmap;

   445 	int i, count, unique;

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

   448 	map = razor_qsort_with_data(set->properties.data,

   449 				    count,

   450 				    sizeof(struct razor_property),

   451 				    compare_properties,

   452 				    set);

   454 	rp_end = set->properties.data + set->properties.size;

   455 	rmap = malloc(count * sizeof *map);

   456 	pkgs = zalloc(count * sizeof *pkgs);

   457 	for (rp = set->properties.data, up = rp, i = 0; rp < rp_end; rp++, i++) {

   458 		if (rp->name != up->name || rp->type != up->type ||

   459 		    rp->relation != up->relation || rp->version != up->version) {

   460 			up++;

   461 			up->name = rp->name;

   462 			up->flags = 0;

   463 			up->type = rp->type;

   464 			up->relation = rp->relation;

   465 			up->version = rp->version;

   466 		}

   468 		unique = up - (struct razor_property *) set->properties.data;

   469 		rmap[map[i]] = unique;

   470 		r = array_add(&pkgs[unique], sizeof *r);

   471 		*r = rp->packages;

   472 	}

   473 	free(map);

   475 	if (up != rp)

   476 		up++;

   477 	set->properties.size = (void *) up - set->properties.data;

   478 	rp_end = up;

   479 	for (rp = set->properties.data, p = pkgs; rp < rp_end; rp++, p++) {

   480 		list_set_array(&rp->packages, &set->package_pool, p, 0);

   481 		array_release(p);

   482 	}

   484 	free(pkgs);

   486 	return rmap;

   487 }

   489 static int

   490 compare_filenames(const void *p1, const void *p2, void *data)

   491 {

   492 	const struct import_entry *e1 = p1;

   493 	const struct import_entry *e2 = p2;

   494 	const char *n1 = e1->name;

   495 	const char *n2 = e2->name;

   497 	/* Need to make sure that the contents of a directory

   498 	 * are sorted immediately after it. So "foo/bar" has to

   499 	 * sort before "foo.conf"

   500 	 *

   501 	 * FIXME: this is about 60% slower than strcmp

   502 	 */

   503 	while (*n1 && *n2) {

   504 		if (*n1 < *n2)

   505 			return *n2 == '/' ? 1 : -1;

   506 		else if (*n1 > *n2)

   507 			return *n1 == '/' ? -1 : 1;

   508 		n1++;

   509 		n2++;

   510 	}

   511 	if (*n1)

   512 		return 1;

   513 	else if (*n2)

   514 		return -1;

   515 	else

   516 		return 0;

   517 }

   519 static void

   520 count_entries(struct import_directory *d)

   521 {

   522 	struct import_directory *p, *end;

   524 	p = d->files.data;

   525 	end = d->files.data + d->files.size;

   526 	d->count = 0;

   527 	while (p < end) {

   528 		count_entries(p);

   529 		d->count += p->count + 1;

   530 		p++;

   531 	}

   532 }

   534 static void

   535 serialize_files(struct razor_set *set,

   536 		struct import_directory *d, struct array *array)

   537 {

   538 	struct import_directory *p, *end;

   539 	struct razor_entry *e = NULL;

   540 	uint32_t s;

   542 	p = d->files.data;

   543 	end = d->files.data + d->files.size;

   544 	s = array->size / sizeof *e + d->files.size / sizeof *p;

   545 	while (p < end) {

   546 		e = array_add(array, sizeof *e);

   547 		e->name = p->name;

   548 		e->flags = 0;

   549 		e->start = p->count > 0 ? s : 0;

   550 		s += p->count;

   552 		list_set_array(&e->packages, &set->package_pool, &p->packages, 0);

   553 		array_release(&p->packages);

   554 		p++;

   555 	}

   556 	if (e != NULL)

   557 		e->flags |= RAZOR_ENTRY_LAST;

   559 	p = d->files.data;

   560 	end = d->files.data + d->files.size;

   561 	while (p < end) {

   562 		serialize_files(set, p, array);

   563 		p++;

   564 	}

   565 }

   567 static void

   568 remap_property_package_links(struct array *properties, uint32_t *rmap)

   569 {

   570 	struct razor_property *p, *end;

   572 	end = properties->data + properties->size;

   573 	for (p = properties->data; p < end; p++)

   574 		list_remap_head(&p->packages, rmap);

   575 }

   577 static void

   578 build_file_tree(struct razor_importer *importer)

   579 {

   580 	int count, i, length;

   581 	struct import_entry *filenames;

   582 	char *f, *end;

   583 	uint32_t name, *r;

   584 	char dirname[256];

   585 	struct import_directory *d, root;

   586 	struct razor_entry *e;

   588 	count = importer->files.size / sizeof (struct import_entry);

   589 	razor_qsort_with_data(importer->files.data,

   590 			      count,

   591 			      sizeof (struct import_entry),

   592 			      compare_filenames,

   593 			      NULL);

   595 	root.name = hashtable_tokenize(&importer->table, "");

   596 	array_init(&root.files);

   597 	array_init(&root.packages);

   598 	root.last = NULL;

   600 	filenames = importer->files.data;

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

   602 		f = filenames[i].name;

   603 		if (*f != '/')

   604 			continue;

   605 		f++;

   607 		d = &root;

   608 		while (*f) {

   609 			end = strchr(f, '/');

   610 			if (end == NULL)

   611 				end = f + strlen(f);

   612 			length = end - f;

   613 			memcpy(dirname, f, length);

   614 			dirname[length] ='\0';

   615 			name = hashtable_tokenize(&importer->table, dirname);

   616 			if (d->last == NULL || d->last->name != name) {

   617 				d->last = array_add(&d->files, sizeof *d);

   618 				d->last->name = name;

   619 				d->last->last = NULL;

   620 				array_init(&d->last->files);

   621 				array_init(&d->last->packages);

   622 			}

   623 			d = d->last;

   624 			f = end + 1;

   625 			if (*end == '\0')

   626 				break;

   627 		}

   629 		r = array_add(&d->packages, sizeof *r);

   630 		*r = filenames[i].package;

   631 		free(filenames[i].name);

   632 	}

   634 	count_entries(&root);

   635 	e = importer->set->files.data;

   636 	e->name = root.name;

   637 	e->flags = RAZOR_ENTRY_LAST;

   638 	e->start = importer->files.size ? 1 : 0;

   639 	list_set_empty(&e->packages);

   641 	serialize_files(importer->set, &root, &importer->set->files);

   643 	array_release(&importer->files);

   644 }

   646 static struct razor_entry *

   647 find_entry(struct razor_set *set, struct razor_entry *dir, const char *pattern);

   649 static void

   650 list_to_array(struct list *list, struct array *array)

   651 {

   652 	uint32_t *item;

   654 	while (list) {

   655 		 item = array_add(array, sizeof *item);

   656 		 *item = list->data;

   657 		 list = list_next(list);

   658 	}

   659 }

   661 static int

   662 compare_file_requires(const void *p1, const void *p2, void *data)

   663 {

   664 	uint32_t *f1 = (void *)p1, *f2 = (void *)p2;

   665 	const char *pool = data;

   667 	return strcmp(&pool[*f1], &pool[*f2]);

   668 }

   670 static void

   671 find_file_provides(struct razor_importer *importer)

   672 {

   673 	struct razor_property *prop;

   674 	struct razor_entry *top, *entry;

   675 	struct razor_package *packages;

   676 	struct array pkgprops;

   677 	struct list *pkg;

   678 	uint32_t *req, *req_start, *req_end;

   679 	uint32_t *map, *newprop;

   680 	char *pool;

   682 	pool = importer->set->string_pool.data;

   683 	packages = importer->set->packages.data;

   684 	top = importer->set->files.data;

   686 	req = req_start = importer->file_requires.data;

   687 	req_end = importer->file_requires.data + importer->file_requires.size;

   688 	map = razor_qsort_with_data(req, req_end - req, sizeof *req,

   689 				    compare_file_requires, pool);

   690 	free(map);

   692 	for (req = req_start; req < req_end; req++) {

   693 		if (req > req_start && req[0] == req[-1])

   694 			continue;

   695 		entry = find_entry(importer->set, top, &pool[*req]);

   696 		if (!entry)

   697 			continue;

   699 		for (pkg = list_first(&entry->packages, &importer->set->package_pool); pkg; pkg = list_next(pkg)) {

   700 			prop = array_add(&importer->set->properties, sizeof *prop);

   701 			prop->name = *req;

   702 			prop->type = RAZOR_PROPERTY_PROVIDES;

   703 			prop->relation = RAZOR_VERSION_EQUAL;

   704 			prop->version = hashtable_tokenize(&importer->table, "");

   705 			list_set_ptr(&prop->packages, pkg->data);

   707 			/* Update property list of pkg */

   708 			array_init(&pkgprops);

   709 			list_to_array(list_first(&packages[pkg->data].properties, &importer->set->property_pool), &pkgprops);

   710 			newprop = array_add(&pkgprops, sizeof *newprop);

   711 			*newprop = prop - (struct razor_property *)importer->set->properties.data;

   712 			list_set_array(&packages[pkg->data].properties, &importer->set->property_pool, &pkgprops, 1);

   713 			array_release(&pkgprops);

   714 		}

   715 	}

   717 	array_release(&importer->file_requires);

   718 }

   720 static void

   721 build_package_file_lists(struct razor_set *set, uint32_t *rmap)

   722 {

   723 	struct razor_package *p, *packages;

   724 	struct array *pkgs;

   725 	struct razor_entry *e, *end;

   726 	struct list *r;

   727 	uint32_t *q;

   728 	int i, count;

   730 	count = set->packages.size / sizeof *p;

   731 	pkgs = zalloc(count * sizeof *pkgs);

   733 	end = set->files.data + set->files.size;

   734 	for (e = set->files.data; e < end; e++) {

   735 		list_remap_head(&e->packages, rmap);

   736 		r = list_first(&e->packages, &set->package_pool);

   737 		while (r) {

   738 			q = array_add(&pkgs[r->data], sizeof *q);

   739 			*q = e - (struct razor_entry *) set->files.data;

   740 			r = list_next(r);

   741 		}

   742 	}

   744 	packages = set->packages.data;

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

   746 		list_set_array(&packages[i].files, &set->file_pool, &pkgs[i], 0);

   747 		array_release(&pkgs[i]);

   748 	}

   749 	free(pkgs);

   750 }

   752 struct razor_set *

   753 razor_importer_finish(struct razor_importer *importer)

   754 {

   755 	struct razor_set *set;

   756 	uint32_t *map, *rmap;

   757 	int i, count;

   759 	build_file_tree(importer);

   760 	find_file_provides(importer);

   762 	map = uniqueify_properties(importer->set);

   763 	list_remap_pool(&importer->set->property_pool, map);

   764 	free(map);

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

   767 	map = razor_qsort_with_data(importer->set->packages.data,

   768 				    count,

   769 				    sizeof(struct razor_package),

   770 				    compare_packages,

   771 				    importer->set);

   773 	rmap = malloc(count * sizeof *rmap);

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

   775 		rmap[map[i]] = i;

   776 	free(map);

   778 	list_remap_pool(&importer->set->package_pool, rmap);

   779 	build_package_file_lists(importer->set, rmap);

   780 	remap_property_package_links(&importer->set->properties, rmap);

   781 	free(rmap);

   783 	set = importer->set;

   784 	hashtable_release(&importer->table);

   785 	free(importer);

   787 	return set;

   788 }

   790 struct razor_package_iterator {

   791 	struct razor_set *set;

   792 	struct razor_package *package, *end;

   793 	struct list *index;

   794 };

   796 static struct razor_package_iterator *

   797 razor_package_iterator_create_with_index(struct razor_set *set,

   798 					 struct list *index)

   799 {

   800 	struct razor_package_iterator *pi;

   802 	pi = zalloc(sizeof *pi);

   803 	pi->set = set;

   804 	pi->index = index;

   806 	return pi;

   807 }

   809 struct razor_package_iterator *

   810 razor_package_iterator_create(struct razor_set *set)

   811 {

   812 	struct razor_package_iterator *pi;

   814 	pi = zalloc(sizeof *pi);

   815 	pi->set = set;

   816 	pi->end = set->packages.data + set->packages.size;

   817 	pi->package = set->packages.data;

   819 	return pi;

   820 }

   822 struct razor_package_iterator *

   823 razor_package_iterator_create_for_property(struct razor_set *set,

   824 					   struct razor_property *property)

   825 {

   826 	struct list *index;

   828 	index = list_first(&property->packages, &set->package_pool);

   829 	return razor_package_iterator_create_with_index(set, index);

   830 }

   832 int

   833 razor_package_iterator_next(struct razor_package_iterator *pi,

   834 			    struct razor_package **package,

   835 			    const char **name,

   836 			    const char **version,

   837 			    const char **arch)

   838 {

   839 	char *pool;

   840 	int valid;

   841 	struct razor_package *p, *packages;

   843 	if (pi->package) {

   844 		p = pi->package++;

   845 		valid = p < pi->end;

   846 	} else if (pi->index) {

   847 		packages = pi->set->packages.data;

   848 		p = &packages[pi->index->data];

   849 		pi->index = list_next(pi->index);

   850 		valid = 1;

   851 	} else

   852 		valid = 0;

   854 	if (valid) {

   855 		pool = pi->set->string_pool.data;

   856 		*package = p;

   857 		*name = &pool[p->name];

   858 		*version = &pool[p->version];

   859 		*arch = &pool[p->arch];

   860 	} else {

   861 		*package = NULL;

   862 	}

   864 	return valid;

   865 }

   867 void

   868 razor_package_iterator_destroy(struct razor_package_iterator *pi)

   869 {

   870 	free(pi);

   871 }

   873 struct razor_package *

   874 razor_set_get_package(struct razor_set *set, const char *package)

   875 {

   876 	struct razor_package_iterator *pi;

   877 	struct razor_package *p;

   878 	const char *name, *version, *arch;

   880 	pi = razor_package_iterator_create(set);

   881 	while (razor_package_iterator_next(pi, &p, &name, &version, &arch)) {

   882 		if (strcmp(package, name) == 0)

   883 			break;

   884 	}

   885 	razor_package_iterator_destroy(pi);

   887 	return p;

   888 }

   890 struct razor_property_iterator {

   891 	struct razor_set *set;

   892 	struct razor_property *property, *end;

   893 	struct list *index;

   894 };

   896 struct razor_property_iterator *

   897 razor_property_iterator_create(struct razor_set *set,

   898 			       struct razor_package *package)

   899 {

   900 	struct razor_property_iterator *pi;

   902 	pi = zalloc(sizeof *pi);

   903 	pi->set = set;

   905 	if (package) {

   906 		pi->index = list_first(&package->properties,

   907 				       &set->property_pool);

   908 	} else {

   909 		pi->property = set->properties.data;

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

   911 	}

   913 	return pi;

   914 }

   916 int

   917 razor_property_iterator_next(struct razor_property_iterator *pi,

   918 			     struct razor_property **property,

   919 			     const char **name,

   920 			     enum razor_version_relation *relation,

   921 			     const char **version,

   922 			     enum razor_property_type *type)

   923 {

   924 	char *pool;

   925 	int valid;

   926 	struct razor_property *p, *properties;

   928 	if (pi->property) {

   929 		p = pi->property++;

   930 		valid = p < pi->end;

   931 	} else if (pi->index) {

   932 		properties = pi->set->properties.data;

   933 		p = &properties[pi->index->data];

   934 		pi->index = list_next(pi->index);

   935 		valid = 1;

   936 	} else

   937 		valid = 0;

   939 	if (valid) {

   940 		pool = pi->set->string_pool.data;

   941 		*property = p;

   942 		*name = &pool[p->name];

   943 		*relation = p->relation;

   944 		*version = &pool[p->version];

   945 		*type = p->type;

   946 	} else {

   947 		*property = NULL;

   948 	}

   950 	return valid;

   951 }

   953 void

   954 razor_property_iterator_destroy(struct razor_property_iterator *pi)

   955 {

   956 	free(pi);

   957 }

   959 static struct razor_entry *

   960 find_entry(struct razor_set *set, struct razor_entry *dir, const char *pattern)

   961 {

   962 	struct razor_entry *e;

   963 	const char *n, *pool = set->string_pool.data;

   964 	int len;

   966 	e = (struct razor_entry *) set->files.data + dir->start;

   967 	do {

   968 		n = pool + e->name;

   969 		if (strcmp(pattern + 1, n) == 0)

   970 			return e;

   971 		len = strlen(n);

   972 		if (e->start != 0 && strncmp(pattern + 1, n, len) == 0 &&

   973 		    pattern[len + 1] == '/') {

   974 			return find_entry(set, e, pattern + len + 1);

   975 		}

   976 	} while (!((e++)->flags & RAZOR_ENTRY_LAST));

   978 	return NULL;

   979 }

   981 static void

   982 list_dir(struct razor_set *set, struct razor_entry *dir,

   983 	 char *prefix, const char *pattern)

   984 {

   985 	struct razor_entry *e;

   986 	const char *n, *pool = set->string_pool.data;

   988 	e = (struct razor_entry *) set->files.data + dir->start;

   989 	do {

   990 		n = pool + e->name;

   991 		if (pattern && pattern[0] && fnmatch(pattern, n, 0) != 0)

   992 			continue;

   993 		printf("%s/%s\n", prefix, n);

   994 		if (e->start) {

   995 			char *sub = prefix + strlen (prefix);

   996 			*sub = '/';

   997 			strcpy (sub + 1, n);

   998 			list_dir(set, e, prefix, pattern);

   999 			*sub = '\0';

  1000 		}

  1001 	} while (!((e++)->flags & RAZOR_ENTRY_LAST));

  1002 }

  1004 void

  1005 razor_set_list_files(struct razor_set *set, const char *pattern)

  1006 {

  1007 	struct razor_entry *e;

  1008 	char buffer[512], *p, *base;

  1010 	if (pattern == NULL || !strcmp (pattern, "/")) {

  1011 		buffer[0] = '\0';

  1012 		list_dir(set, set->files.data, buffer, NULL);

  1013 		return;

  1014 	}

  1016 	strcpy(buffer, pattern);

  1017 	e = find_entry(set, set->files.data, buffer);

  1018 	if (e && e->start > 0) {

  1019 		base = NULL;

  1020 	} else {

  1021 		p = strrchr(buffer, '/');

  1022 		if (p) {

  1023 			*p = '\0';

  1024 			base = p + 1;

  1025 		} else {

  1026 			base = NULL;

  1027 		}

  1028 	}

  1029 	e = find_entry(set, set->files.data, buffer);

  1030 	if (e->start != 0)

  1031 		list_dir(set, e, buffer, base);

  1032 }

  1034 struct razor_package_iterator *

  1035 razor_package_iterator_create_for_file(struct razor_set *set,

  1036 				       const char *filename)

  1037 {

  1038 	struct razor_entry *entry;

  1039 	struct list *index;

  1041 	entry = find_entry(set, set->files.data, filename);

  1042 	if (entry == NULL)

  1043 		return NULL;

  1045 	index = list_first(&entry->packages, &set->package_pool);

  1046 	return razor_package_iterator_create_with_index(set, index);

  1047 }

  1049 static struct list *

  1050 list_package_files(struct razor_set *set, struct list *r,

  1051 		   struct razor_entry *dir, uint32_t end,

  1052 		   char *prefix)

  1053 {

  1054 	struct razor_entry *e, *f, *entries;

  1055 	uint32_t next, file;

  1056 	char *pool;

  1057 	int len;

  1059 	entries = (struct razor_entry *) set->files.data;

  1060 	pool = set->string_pool.data;

  1062 	e = entries + dir->start;

  1063 	do {

  1064 		if (entries + r->data == e) {

  1065 			printf("%s/%s\n", prefix, pool + e->name);

  1066 			r = list_next(r);

  1067 			if (!r)

  1068 				return NULL;

  1069 			if (r->data >= end)

  1070 				return r;

  1071 		}

  1072 	} while (!((e++)->flags & RAZOR_ENTRY_LAST));

  1074 	e = entries + dir->start;

  1075 	do {

  1076 		if (e->start == 0)

  1077 			continue;

  1079 		if (e->flags & RAZOR_ENTRY_LAST)

  1080 			next = end;

  1081 		else {

  1082 			f = e + 1;

  1083 			while (f->start == 0 && !(f->flags & RAZOR_ENTRY_LAST))

  1084 				f++;

  1085 			if (f->start == 0)

  1086 				next = end;

  1087 			else

  1088 				next = f->start;

  1089 		}

  1091 		file = r->data;

  1092 		if (e->start <= file && file < next) {

  1093 			len = strlen(prefix);

  1094 			prefix[len] = '/';

  1095 			strcpy(prefix + len + 1, pool + e->name);

  1096 			r = list_package_files(set, r, e, next, prefix);

  1097 			prefix[len] = '\0';

  1098 		}

  1099 	} while (!((e++)->flags & RAZOR_ENTRY_LAST) && r != NULL);

  1101 	return r;

  1102 }

  1104 void

  1105 razor_set_list_package_files(struct razor_set *set, const char *name)

  1106 {

  1107 	struct razor_package *package;

  1108 	struct list *r;

  1109 	uint32_t end;

  1110 	char buffer[512];

  1112 	package = razor_set_get_package(set, name);

  1114 	r = list_first(&package->files, &set->file_pool);

  1115 	end = set->files.size / sizeof (struct razor_entry);

  1116 	buffer[0] = '\0';

  1117 	list_package_files(set, r, set->files.data, end, buffer);

  1118 }

  1120 static void

  1121 razor_set_validate(struct razor_set *set, struct array *unsatisfied)

  1122 {

  1123 	struct razor_property *r, *p, *end;

  1124 	uint32_t *u;

  1125 	char *pool;

  1127 	end = set->properties.data + set->properties.size;

  1128 	pool = set->string_pool.data;

  1130 	for (r = set->properties.data, p = r; r < end; r++) {

  1131 		if (r->type != RAZOR_PROPERTY_REQUIRES)

  1132 			continue;

  1134 		p = r;

  1135 		while (p < end && p->name == r->name &&

  1136 		       p->type == r->type)

  1137 			p++;

  1139 		/* If there is more than one version of a provides,

  1140 		 * seek to the end for the highest version. */

  1141 		/* FIXME: This doesn't work if we have a series of

  1142 		 * requires a = 1, provides a = 1, requires a = 2,

  1143 		 * provides a = 2, as the kernel and kernel-devel

  1144 		 * does.*/

  1145 		while (p + 1 < end && p->name == (p + 1)->name &&

  1146 		       p->type == (p + 1)->type)

  1147 			p++;

  1149 		/* FIXME: We need to track property flags (<, <=, =

  1150 		 * etc) to properly determine if a requires is

  1151 		 * satisfied.  The current code doesn't track that the

  1152 		 * requires a = 1 isn't satisfied by a = 2 provides. */

  1154 		if (p == end ||

  1155 		    p->type != RAZOR_PROPERTY_PROVIDES ||

  1156 		    r->name != p->name ||

  1157 		    versioncmp(&pool[r->version], &pool[p->version]) > 0) {

  1158 			/* FIXME: We ignore file requires for now. */

  1159 			if (pool[r->name] == '/')

  1160 				continue;

  1161 			u = array_add(unsatisfied, sizeof *u);

  1162 			*u = r - (struct razor_property *) set->properties.data;

  1163 		}

  1164 	}

  1165 }

  1167 void

  1168 razor_set_list_unsatisfied(struct razor_set *set)

  1169 {

  1170 	struct array unsatisfied;

  1171 	struct razor_property *properties, *r;

  1172 	uint32_t *u, *end;

  1173 	char *pool;

  1175 	array_init(&unsatisfied);

  1176 	razor_set_validate(set, &unsatisfied);

  1178 	end = unsatisfied.data + unsatisfied.size;

  1179 	properties = set->properties.data;

  1180 	pool = set->string_pool.data;

  1182 	for (u = unsatisfied.data; u < end; u++) {

  1183 		r = properties + *u;

  1184 		if (pool[r->version] == '\0')

  1185 			printf("%ss not satisfied\n",

  1186 			       &pool[r->name]);

  1187 		else

  1188 			printf("%s-%s not satisfied\n",

  1189 			       &pool[r->name],

  1190 			       &pool[r->version]);

  1191 	}

  1193 	array_release(&unsatisfied);

  1194 }

  1196 #define UPSTREAM_SOURCE 0x80

  1198 struct source {

  1199 	struct razor_set *set;

  1200 	uint32_t *property_map;

  1201 	uint32_t *file_map;

  1202 };

  1204 struct razor_merger {

  1205 	struct razor_set *set;

  1206 	struct hashtable table;

  1207 	struct source source1;

  1208 	struct source source2;

  1209 };

  1211 static struct razor_merger *

  1212 razor_merger_create(struct razor_set *set1, struct razor_set *set2)

  1213 {

  1214 	struct razor_merger *merger;

  1215 	int count;

  1216 	size_t size;

  1218 	merger = zalloc(sizeof *merger);

  1219 	merger->set = razor_set_create();

  1220 	hashtable_init(&merger->table, &merger->set->string_pool);

  1222 	merger->source1.set = set1;

  1223 	count = set1->properties.size / sizeof (struct razor_property);

  1224 	size = count * sizeof merger->source1.property_map[0];

  1225 	merger->source1.property_map = zalloc(size);

  1226 	count = set1->files.size / sizeof (struct razor_entry);

  1227 	size = count * sizeof merger->source1.file_map[0];

  1228 	merger->source1.file_map = zalloc(size);

  1230 	merger->source2.set = set2;

  1231 	count = set2->properties.size / sizeof (struct razor_property);

  1232 	size = count * sizeof merger->source2.property_map[0];

  1233 	merger->source2.property_map = zalloc(size);

  1234 	count = set2->files.size / sizeof (struct razor_entry);

  1235 	size = count * sizeof merger->source2.file_map[0];

  1236 	merger->source2.file_map = zalloc(size);

  1238 	return merger;

  1239 }

  1241 static void

  1242 add_package(struct razor_merger *merger,

  1243 	    struct razor_package *package, struct source *source,

  1244 	    uint32_t flags)

  1245 {

  1246 	char *pool;

  1247 	struct list *r;

  1248 	struct razor_package *p;

  1250 	pool = source->set->string_pool.data;

  1251 	p = array_add(&merger->set->packages, sizeof *p);

  1252 	p->name = hashtable_tokenize(&merger->table, &pool[package->name]);

  1253 	p->flags = flags;

  1254 	p->version = hashtable_tokenize(&merger->table,

  1255 					&pool[package->version]);

  1256 	p->arch = hashtable_tokenize(&merger->table,

  1257 				     &pool[package->arch]);

  1259 	p->properties = package->properties;

  1260 	r = list_first(&package->properties, &source->set->property_pool);

  1261 	while (r) {

  1262 		source->property_map[r->data] = 1;

  1263 		r = list_next(r);

  1264 	}

  1266 	p->files = package->files;

  1267 	r = list_first(&package->files, &source->set->file_pool);

  1268 	while (r) {

  1269 		source->file_map[r->data] = 1;

  1270 		r = list_next(r);

  1271 	}

  1272 }

  1274 static uint32_t

  1275 add_property(struct razor_merger *merger,

  1276 	     const char *name, enum razor_version_relation relation,

  1277 	     const char *version, int type)

  1278 {

  1279 	struct razor_property *p;

  1281 	p = array_add(&merger->set->properties, sizeof *p);

  1282 	p->name = hashtable_tokenize(&merger->table, name);

  1283 	p->flags = 0;

  1284 	p->type = type;

  1285 	p->relation = relation;

  1286 	p->version = hashtable_tokenize(&merger->table, version);

  1288 	return p - (struct razor_property *) merger->set->properties.data;

  1289 }

  1291 static void

  1292 merge_properties(struct razor_merger *merger)

  1293 {

  1294 	struct razor_property *p1, *p2;

  1295 	struct razor_set *set1, *set2;

  1296 	uint32_t *map1, *map2;

  1297 	int i, j, cmp, count1, count2;

  1298 	char *pool1, *pool2;

  1300 	set1 = merger->source1.set;

  1301 	set2 = merger->source2.set;

  1302 	map1 = merger->source1.property_map;

  1303 	map2 = merger->source2.property_map;

  1305 	i = 0;

  1306 	j = 0;

  1307 	pool1 = set1->string_pool.data;

  1308 	pool2 = set2->string_pool.data;

  1310 	count1 = set1->properties.size / sizeof *p1;

  1311 	count2 = set2->properties.size / sizeof *p2;

  1312 	while (i < count1 || j < count2) {

  1313 		if (i < count1 && map1[i] == 0) {

  1314 			i++;

  1315 			continue;

  1316 		}

  1317 		if (j < count2 && map2[j] == 0) {

  1318 			j++;

  1319 			continue;

  1320 		}

  1321 		p1 = (struct razor_property *) set1->properties.data + i;

  1322 		p2 = (struct razor_property *) set2->properties.data + j;

  1323 		if (i < count1 && j < count2)

  1324 			cmp = strcmp(&pool1[p1->name], &pool2[p2->name]);

  1325 		else if (i < count1)

  1326 			cmp = -1;

  1327 		else

  1328 			cmp = 1;

  1329 		if (cmp == 0)

  1330 			cmp = p1->type - p2->type;

  1331 		if (cmp == 0)

  1332 			cmp = p1->relation - p2->relation;

  1333 		if (cmp == 0)

  1334 			cmp = versioncmp(&pool1[p1->version],

  1335 					 &pool2[p2->version]);

  1336 		if (cmp < 0) {

  1337 			map1[i++] = add_property(merger,

  1338 						 &pool1[p1->name],

  1339 						 p1->relation,

  1340 						 &pool1[p1->version],

  1341 						 p1->type);

  1342 		} else if (cmp > 0) {

  1343 			map2[j++] = add_property(merger,

  1344 						 &pool2[p2->name],

  1345 						 p2->relation,

  1346 						 &pool2[p2->version],

  1347 						 p2->type);

  1348 		} else  {

  1349 			map1[i++] = map2[j++] = add_property(merger,

  1350 							     &pool1[p1->name],

  1351 							     p1->relation,

  1352 							     &pool1[p1->version],

  1353 							     p1->type);

  1354 		}

  1355 	}

  1356 }

  1358 static void

  1359 emit_properties(struct list_head *properties, struct array *source_pool,

  1360 		uint32_t *map, struct array *pool)

  1361 {

  1362 	uint32_t r;

  1363 	struct list *p, *q;

  1365 	r = pool->size / sizeof *q;

  1366 	p = list_first(properties, source_pool);

  1367 	while (p) {

  1368 		q = array_add(pool, sizeof *q);

  1369 		q->data = map[p->data];

  1370 		q->flags = p->flags;

  1371 		p = list_next(p);

  1372 	}

  1374 	list_set_ptr(properties, r);

  1375 }

  1377 static uint32_t

  1378 add_file(struct razor_merger *merger, const char *name)

  1379 {

  1380 	struct razor_entry *e;

  1382 	e = array_add(&merger->set->files, sizeof *e);

  1383 	e->name = hashtable_tokenize(&merger->table, name);

  1384 	e->flags = 0;

  1385 	e->start = 0;

  1387 	return e - (struct razor_entry *)merger->set->files.data;

  1388 }

  1390 /* FIXME. Blah */

  1391 static int

  1392 fix_file_map(uint32_t *map,

  1393 	     struct razor_entry *files,

  1394 	     struct razor_entry *top)

  1395 {

  1396 	uint32_t e;

  1397 	int found_file = 0;

  1399 	e = top->start;

  1400 	do {

  1401 		if (files[e].start)

  1402 			fix_file_map(map, files, &files[e]);

  1403 		if (map[e])

  1404 			found_file = 1;

  1405 	} while (!(files[e++].flags & RAZOR_ENTRY_LAST));

  1407 	if (found_file)

  1408 		map[top - files] = 1;

  1409 	return found_file;

  1410 }

  1412 struct merge_directory {

  1413 	uint32_t merged, dir1, dir2;

  1414 };

  1416 static void

  1417 merge_one_directory(struct razor_merger *merger, struct merge_directory *md)

  1418 {

  1419 	struct razor_entry *root1, *root2, *mroot, *e1, *e2;

  1420 	struct razor_set *set1, *set2;

  1421 	struct array merge_stack;

  1422 	struct merge_directory *child_md, *end_md;

  1423 	uint32_t *map1, *map2, start, last;

  1424 	int cmp;

  1425 	char *pool1, *pool2;

  1427 	set1 = merger->source1.set;

  1428 	set2 = merger->source2.set;

  1429 	map1 = merger->source1.file_map;

  1430 	map2 = merger->source2.file_map;

  1431 	pool1 = set1->string_pool.data;

  1432 	pool2 = set2->string_pool.data;

  1433 	root1 = (struct razor_entry *) set1->files.data;

  1434 	root2 = (struct razor_entry *) set2->files.data;

  1436 	array_init(&merge_stack);

  1438 	start = merger->set->files.size / sizeof (struct razor_entry);

  1439 	last = 0;

  1440 	e1 = md->dir1 ? root1 + md->dir1 : NULL;

  1441 	e2 = md->dir2 ? root2 + md->dir2 : NULL;

  1442 	while (e1 || e2) {

  1443 		if (!e2 && !map1[e1 - root1]) {

  1444 			if ((e1++)->flags & RAZOR_ENTRY_LAST)

  1445 				e1 = NULL;

  1446 			continue;

  1447 		}

  1448 		if (!e1 && !map2[e2 - root2]) {

  1449 			if ((e2++)->flags & RAZOR_ENTRY_LAST)

  1450 				e2 = NULL;

  1451 			continue;

  1452 		}

  1453 		if (e1 && !map1[e1 - root1] &&

  1454 		    e2 && !map1[e2 - root2]) {

  1455 			if ((e1++)->flags & RAZOR_ENTRY_LAST)

  1456 				e1 = NULL;

  1457 			if ((e2++)->flags & RAZOR_ENTRY_LAST)

  1458 				e2 = NULL;

  1459 			continue;

  1460 		}

  1462 		if (!e1)

  1463 			cmp = 1;

  1464 		else if (!e2)

  1465 			cmp = -1;

  1466 		else {

  1467 			cmp = strcmp (&pool1[e1->name],

  1468 				      &pool2[e2->name]);

  1469 		}

  1471 		if (cmp < 0) {

  1472 			if (map1[e1 - root1]) {

  1473 				map1[e1 - root1] = last =

  1474 					add_file(merger, &pool1[e1->name]);

  1475 				if (e1->start) {

  1476 					child_md = array_add(&merge_stack, sizeof (struct merge_directory));

  1477 					child_md->merged = last;

  1478 					child_md->dir1 = e1->start;

  1479 					child_md->dir2 = 0;

  1480 				}

  1481 			}

  1482 			if ((e1++)->flags & RAZOR_ENTRY_LAST)

  1483 				e1 = NULL;

  1484 		} else if (cmp > 0) {

  1485 			if (map2[e2 - root2]) {

  1486 				map2[e2 - root2] = last =

  1487 					add_file(merger, &pool2[e2->name]);

  1488 				if (e2->start) {

  1489 					child_md = array_add(&merge_stack, sizeof (struct merge_directory));

  1490 					child_md->merged = last;

  1491 					child_md->dir1 = 0;

  1492 					child_md->dir2 = e2->start;

  1493 				}

  1494 			}

  1495 			if ((e2++)->flags & RAZOR_ENTRY_LAST)

  1496 				e2 = NULL;

  1497 		} else {

  1498 			map1[e1 - root1] = map2[e2- root2] = last =

  1499 				add_file(merger, &pool1[e1->name]);

  1500 			if (e1->start || e2->start) {

  1501 				child_md = array_add(&merge_stack, sizeof (struct merge_directory));

  1502 				child_md->merged = last;

  1503 				child_md->dir1 = e1->start;

  1504 				child_md->dir2 = e2->start;

  1505 			}

  1506 			if ((e1++)->flags & RAZOR_ENTRY_LAST)

  1507 				e1 = NULL;

  1508 			if ((e2++)->flags & RAZOR_ENTRY_LAST)

  1509 				e2 = NULL;

  1510 		}

  1511 	}

  1513 	mroot = (struct razor_entry *)merger->set->files.data;

  1514 	if (last) {

  1515 		mroot[last].flags = RAZOR_ENTRY_LAST;

  1516 		mroot[md->merged].start = start;

  1517 	} else

  1518 		mroot[md->merged].start = 0;

  1520 	end_md = merge_stack.data + merge_stack.size;

  1521 	for (child_md = merge_stack.data; child_md < end_md; child_md++)

  1522 		merge_one_directory(merger, child_md);

  1523 	array_release(&merge_stack);

  1524 }

  1526 static void

  1527 merge_files(struct razor_merger *merger)

  1528 {

  1529 	struct razor_entry *root;

  1530 	struct merge_directory md;

  1531 	uint32_t *map1, *map2;

  1533 	map1 = merger->source1.file_map;

  1534 	map2 = merger->source2.file_map;

  1536 	md.merged = 0;

  1538 	if (merger->source1.set->files.size) {

  1539 		root = (struct razor_entry *) merger->source1.set->files.data;

  1540 		if (root->start)

  1541 			fix_file_map(map1, root, root);

  1542 		md.dir1 = root->start;

  1543 	} else

  1544 		md.dir1 = 0;

  1546 	if (merger->source2.set->files.size) {

  1547 		root = (struct razor_entry *) merger->source2.set->files.data;

  1548 		if (root->start)

  1549 			fix_file_map(map2, root, root);

  1550 		md.dir2 = root->start;

  1551 	} else

  1552 		md.dir2 = 0;

  1554 	merge_one_directory(merger, &md);

  1555 }

  1557 static void

  1558 emit_files(struct list_head *files, struct array *source_pool,

  1559 	   uint32_t *map, struct array *pool)

  1560 {

  1561 	uint32_t r;

  1562 	struct list *p, *q;

  1564 	r = pool->size / sizeof *q;

  1565 	p = list_first(files, source_pool);

  1566 	while (p) {

  1567 		q = array_add(pool, sizeof *q);

  1568 		q->data = map[p->data];

  1569 		q->flags = p->flags;

  1570 		p = list_next(p);

  1571 	}

  1573 	list_set_ptr(files, r);

  1574 }

  1576 /* Rebuild property->packages maps.  We can't just remap these, as a

  1577  * property may have lost or gained a number of packages.  Allocate an

  1578  * array per property and loop through the packages and add them to

  1579  * the arrays for their properties. */

  1580 static void

  1581 rebuild_property_package_lists(struct razor_set *set)

  1582 {

  1583 	struct array *pkgs, *a;

  1584 	struct razor_package *pkg, *pkg_end;

  1585 	struct razor_property *prop, *prop_end;

  1586 	struct list *r;

  1587 	uint32_t *q;

  1588 	int count;

  1590 	count = set->properties.size / sizeof (struct razor_property);

  1591 	pkgs = zalloc(count * sizeof *pkgs);

  1592 	pkg_end = set->packages.data + set->packages.size;

  1594 	for (pkg = set->packages.data; pkg < pkg_end; pkg++) {

  1595 		r = list_first(&pkg->properties, &set->property_pool);

  1596 		while (r) {

  1597 			q = array_add(&pkgs[r->data], sizeof *q);

  1598 			*q = pkg - (struct razor_package *) set->packages.data;

  1599 			r = list_next(r);

  1600 		}

  1601 	}

  1603 	prop_end = set->properties.data + set->properties.size;

  1604 	a = pkgs;

  1605 	for (prop = set->properties.data; prop < prop_end; prop++, a++) {

  1606 		list_set_array(&prop->packages, &set->package_pool, a, 0);

  1607 		array_release(a);

  1608 	}

  1609 	free(pkgs);

  1610 }

  1612 static void

  1613 rebuild_file_package_lists(struct razor_set *set)

  1614 {

  1615 	struct array *pkgs, *a;

  1616 	struct razor_package *pkg, *pkg_end;

  1617 	struct razor_entry *entry, *entry_end;

  1618 	struct list *r;

  1619 	uint32_t *q;

  1620 	int count;

  1622 	count = set->files.size / sizeof (struct razor_entry);

  1623 	pkgs = zalloc(count * sizeof *pkgs);

  1624 	pkg_end = set->packages.data + set->packages.size;

  1626 	for (pkg = set->packages.data; pkg < pkg_end; pkg++) {

  1627 		r = list_first(&pkg->files, &set->file_pool);

  1628 		while (r) {

  1629 			q = array_add(&pkgs[r->data], sizeof *q);

  1630 			*q = pkg - (struct razor_package *) set->packages.data;

  1631 			r = list_next(r);

  1632 		}

  1633 	}

  1635 	entry_end = set->files.data + set->files.size;

  1636 	a = pkgs;

  1637 	for (entry = set->files.data; entry < entry_end; entry++, a++) {

  1638 		list_set_array(&entry->packages, &set->package_pool, a, 0);

  1639 		array_release(a);

  1640 	}

  1641 	free(pkgs);

  1642 }

  1644 static struct razor_set *

  1645 razor_merger_finish(struct razor_merger *merger)

  1646 {

  1647 	struct razor_set *result;

  1648 	struct razor_package *p, *pend;

  1650 	/* As we built the package list, we filled out a bitvector of

  1651 	 * the properties that are referenced by the packages in the

  1652 	 * new set.  Now we do a parallel loop through the properties

  1653 	 * and emit those marked in the bit vector to the new set.  In

  1654 	 * the process, we update the bit vector to actually map from

  1655 	 * indices in the old property list to indices in the new

  1656 	 * property list for both sets. */

  1658 	merge_properties(merger);

  1659 	merge_files(merger);

  1661 	/* Now we loop through the packages again and emit the

  1662 	 * property lists, remapped to point to the new properties. */

  1664 	pend = merger->set->packages.data + merger->set->packages.size;

  1665 	for (p = merger->set->packages.data; p < pend; p++) {

  1666 		struct source *src;

  1668 		if (p->flags & UPSTREAM_SOURCE)

  1669 			src = &merger->source2;

  1670 		else

  1671 			src = &merger->source1;

  1673 		emit_properties(&p->properties,

  1674 				&src->set->property_pool,

  1675 				src->property_map,

  1676 				&merger->set->property_pool);

  1677 		emit_files(&p->files,

  1678 			   &src->set->file_pool,

  1679 			   src->file_map,

  1680 			   &merger->set->file_pool);

  1681 		p->flags &= ~UPSTREAM_SOURCE;

  1682 	}

  1684 	rebuild_property_package_lists(merger->set);

  1685 	rebuild_file_package_lists(merger->set);

  1687 	result = merger->set;

  1688 	hashtable_release(&merger->table);

  1689 	free(merger);

  1691 	return result;

  1692 }

  1694 /* The diff order matters.  We should sort the packages so that a

  1695  * REMOVE of a package comes before the INSTALL, and so that all

  1696  * requires for a package have been installed before the package.

  1697  **/

  1699 void

  1700 razor_set_diff(struct razor_set *set, struct razor_set *upstream,

  1701 	       razor_package_callback_t callback, void *data)

  1702 {

  1703 	struct razor_package_iterator *pi1, *pi2;

  1704 	struct razor_package *p1, *p2;

  1705 	const char *name1, *name2, *version1, *version2, *arch1, *arch2;

  1706 	int res;

  1708 	pi1 = razor_package_iterator_create(set);

  1709 	pi2 = razor_package_iterator_create(upstream);

  1711 	razor_package_iterator_next(pi1, &p1, &name1, &version1, &arch1);

  1712 	razor_package_iterator_next(pi2, &p2, &name2, &version2, &arch2);

  1714 	while (p1 || p2) {

  1715 		if (p1 && p2) {

  1716 			res = strcmp(name1, name2);

  1717 			if (res == 0)

  1718 				res = versioncmp(version1, version2);

  1719 		} else {

  1720 			res = 0;

  1721 		}

  1723 		if (p2 == NULL || res < 0)

  1724 			callback(name1, version1, NULL, arch1, data);

  1725 		else if (p1 == NULL || res > 0)

  1726 			callback(name2, NULL, version2, arch2, data);

  1728 		if (p1 != NULL && res <= 0)

  1729 			razor_package_iterator_next(pi1, &p1,

  1730 						    &name1, &version1, &arch1);

  1731 		if (p2 != NULL && res >= 0)

  1732 			razor_package_iterator_next(pi2, &p2,

  1733 						    &name2, &version2, &arch2);

  1734 	}

  1736 	razor_package_iterator_destroy(pi1);

  1737 	razor_package_iterator_destroy(pi2);

  1738 }

  1740 struct razor_transaction;

  1741 struct razor_transaction_package;

  1742 struct razor_transaction_resolver;

  1744 struct razor_transaction {

  1745 	int package_count, errors;

  1746 	struct razor_set *system, *upstream;

  1748 	struct bitarray syspkgs, uppkgs;

  1749 	struct array packages;

  1750 };

  1752 struct razor_transaction_package {

  1753 	const char *name, *old_version, *new_version;

  1754 	struct razor_package *old_package, *new_package;

  1755 	enum razor_transaction_package_state state;

  1757 	/* dep_package is the name of the package that resulted in

  1758 	 * this entry being created (or NULL if the user requested the

  1759 	 * install/remove), with the other dep_ fields providing

  1760 	 * additional information.

  1761 	 *

  1762 	 * For INSTALL, if dep_type is REQUIRES, then dep_package

  1763 	 * required something that this package provides. If dep_type

  1764 	 * is CONFLICTS, then dep_package is a package that conflicted

  1765 	 * with an older version of this package, forcing an upgrade.

  1766 	 *

  1767 	 * For REMOVE, if dep_type is REQUIRES, then dep_package is a

  1768 	 * package that is being removed. If dep_type is OBSOLETES,

  1769 	 * then dep_package is a package that obsoletes this one.

  1770 	 *

  1771 	 * For OLD_CONFLICT or NEW_CONFLICT, dep_package is an

  1772 	 * existing package that conflicts with this one. The

  1773 	 * conflicting property comes from the already-installed

  1774 	 * package for OLD_CONFLICT, or the to-be-installed package

  1775 	 * for NEW_CONFLICT.

  1776 	 *

  1777 	 * For UNSATISFIABLE, the dep_ fields are as for an INSTALL,

  1778 	 * but the name field will be NULL.

  1779 	 */

  1780 	const char *dep_package;

  1781 	enum razor_property_type dep_type;

  1782 	const char *dep_property;

  1783 	enum razor_version_relation dep_relation;

  1784 	const char *dep_version;

  1785 };

  1787 static int

  1788 package_in_set(void *package, struct razor_set *set)

  1789 {

  1790 	return package >= set->packages.data &&

  1791 		package < set->packages.data + set->packages.size;

  1792 }

  1794 static int

  1795 property_in_set(void *property, struct razor_set *set)

  1796 {

  1797 	return property >= set->properties.data &&

  1798 		property < set->properties.data + set->properties.size;

  1799 }

  1801 static struct razor_package *

  1802 property_provider_package(struct razor_transaction *trans,

  1803 			  struct razor_property *prop,

  1804 			  int installed)

  1805 {

  1806 	struct razor_set *set;

  1807 	struct bitarray *pkgbits;

  1808 	struct razor_package *pkgs;

  1809 	struct list *p;

  1811 	if (installed && prop->type != RAZOR_PROPERTY_PROVIDES)

  1812 		return NULL;

  1813 	else if (!installed &&

  1814 		 prop->type != RAZOR_PROPERTY_PROVIDES &&

  1815 		 prop->type != RAZOR_PROPERTY_OBSOLETES)

  1816 		return NULL;

  1818 	if (property_in_set(prop, trans->system)) {

  1819 		set = trans->system;

  1820 		pkgbits = &trans->syspkgs;

  1821 	} else {

  1822 		set = trans->upstream;

  1823 		pkgbits = &trans->uppkgs;

  1824 	}

  1825 	pkgs = set->packages.data;

  1827 	for (p = list_first(&prop->packages, &set->package_pool); p; p = list_next(p)) {

  1828 		if (bitarray_get(pkgbits, p->data) != installed)

  1829 			continue;

  1830 		if (prop->type == RAZOR_PROPERTY_OBSOLETES ||

  1831 		    pkgs[p->data].name == prop->name)

  1832 			return &pkgs[p->data];

  1833 	}

  1834 	return NULL;

  1835 }

  1837 static int

  1838 compare_transaction_packages(const void *one, const void *two)

  1839 {

  1840 	struct razor_transaction_package **tp1 = (void *)one;

  1841 	struct razor_transaction_package **tp2 = (void *)two;

  1843 	if (!(*tp1)->name)

  1844 		return 1;

  1845 	else if (!(*tp2)->name)

  1846 		return -1;

  1847 	else

  1848 		return strcmp((*tp1)->name, (*tp2)->name);

  1849 }

  1851 /* FIXME: merge this into the other property loop in razor_transaction_satisfy */

  1852 static void

  1853 resolve_new_packages(struct razor_transaction *trans,

  1854 		     int start, int end)

  1855 {

  1856 	struct razor_property *sp, *up, *sp_end, *up_end;

  1857 	struct razor_package *spkg, *spkgs, *upkg, *upkgs;

  1858 	struct razor_transaction_package **packages;

  1859 	const char *spool, *upool;

  1860 	int i;

  1862 	sp_end = trans->system->properties.data + trans->system->properties.size;

  1863 	spool = trans->system->string_pool.data;

  1864 	spkgs = trans->system->packages.data;

  1865 	up_end = trans->upstream->properties.data + trans->upstream->properties.size;

  1866 	upool = trans->upstream->string_pool.data;

  1867 	upkgs = trans->upstream->packages.data;

  1869 	/* FIXME, check if sorting the packages directly (rather than

  1870 	 * sorting pointers-to-packages) still results in confusing

  1871 	 * descriptions.

  1872 	 */

  1873 	packages = calloc(end - start, sizeof *packages);

  1874 	for (i = start; i < end; i++)

  1875 		packages[i - start] = ((struct razor_transaction_package *)trans->packages.data) + i;

  1876 	qsort(packages, end - start, sizeof *packages,

  1877 	      compare_transaction_packages);

  1879 	sp = trans->system->properties.data;

  1880 	up = trans->upstream->properties.data;

  1881 	for (i = 0; i < end - start; i++) {

  1882 		if (!packages[i]->name ||

  1883 		    packages[i]->state >= RAZOR_PACKAGE_FIRST_ERROR_STATE)

  1884 			continue;

  1886 		spkg = NULL;

  1887 		while (sp < sp_end &&

  1888 		       strcmp(&spool[sp->name], packages[i]->name) < 0)

  1889 			sp++;

  1890 		while (sp < sp_end &&

  1891 		       strcmp(&spool[sp->name], packages[i]->name) == 0 &&

  1892 		       !(spkg = property_provider_package(trans, sp, 1)))

  1893 			sp++;

  1895 		upkg = NULL;

  1896 		while (up < up_end &&

  1897 		       strcmp(&upool[up->name], packages[i]->name) < 0)

  1898 			up++;

  1899 		while (up < up_end &&

  1900 		       strcmp(&upool[up->name], packages[i]->name) == 0 &&

  1901 		       !(upkg = property_provider_package(trans, up, 0)))

  1902 			up++;

  1904 		if (packages[i]->state == RAZOR_PACKAGE_REMOVE ||

  1905 		    packages[i]->state == RAZOR_PACKAGE_OBSOLETED) {

  1906 			if (spkg) {

  1907 				packages[i]->old_package = spkg;

  1908 				packages[i]->name = &spool[spkg->name];

  1909 				packages[i]->old_version = &spool[spkg->version];

  1910 				bitarray_set(&trans->syspkgs, spkg - spkgs, 0);

  1911 			}

  1912 			if (!packages[i]->old_package) {

  1913 				packages[i]->name = strdup(packages[i]->name);

  1914 				packages[i]->state |= RAZOR_PACKAGE_UNAVAILABLE_FLAG;

  1915 				trans->errors++;

  1916 			}

  1917 		} else {

  1918 			if (upkg) {

  1919 				packages[i]->new_package = upkg;

  1920 				packages[i]->name = &upool[upkg->name];

  1921 				packages[i]->new_version = &upool[upkg->version];

  1923 				if (up->name != upkg->name) {

  1924 					packages[i]->dep_package = &upool[upkg->name];

  1925 					packages[i]->dep_type = up->type;

  1926 					packages[i]->dep_property = &upool[up->name];

  1927 					packages[i]->dep_relation = up->relation;

  1928 					packages[i]->dep_version = &upool[up->version];

  1929 				}

  1931 				if (spkg) {

  1932 					packages[i]->old_package = spkg;

  1933 					packages[i]->old_version = &spool[spkg->version];

  1934 					if (versioncmp(&spool[spkg->version], &upool[up->version]) >= 0) {

  1935 						packages[i]->state = RAZOR_PACKAGE_UP_TO_DATE;

  1936 						trans->errors++;

  1937 						continue;

  1938 					}

  1939 					bitarray_set(&trans->syspkgs, spkg - spkgs, 0);

  1940 				}

  1941 				bitarray_set(&trans->uppkgs, upkg - upkgs, 1);

  1942 			}

  1943 			if (!packages[i]->new_package) {

  1944 				packages[i]->name = strdup(packages[i]->name);

  1945 				packages[i]->state |= RAZOR_PACKAGE_UNAVAILABLE_FLAG;

  1946 				trans->errors++;

  1947 			}

  1948 		}

  1949 	}

  1950 }

  1952 static int

  1953 provider_satisfies_requirement(struct razor_property *provider,

  1954 			       const char *provider_strings,

  1955 			       struct razor_property *requirement,

  1956 			       const char *requirement_strings)

  1957 {

  1958 	int cmp, len;

  1959 	const char *provided = &provider_strings[provider->version];

  1960 	const char *required = &requirement_strings[requirement->version];

  1962 	if (!*required)

  1963 		return 1;

  1964 	if (!*provided) {

  1965 		if (requirement->relation >= RAZOR_VERSION_EQUAL)

  1966 			return 1;

  1967 		else

  1968 			return 0;

  1969 	}

  1971 	cmp = versioncmp(provided, required);

  1973 	switch (requirement->relation) {

  1974 	case RAZOR_VERSION_LESS:

  1975 		return cmp < 0;

  1977 	case RAZOR_VERSION_LESS_OR_EQUAL:

  1978 		if (cmp <= 0)

  1979 			return 1;

  1980 		/* fall through: FIXME, make sure this is correct */

  1982 	case RAZOR_VERSION_EQUAL:

  1983 		if (cmp == 0)

  1984 			return 1;

  1986 		/* "foo == 1.1" is satisfied by "foo 1.1-2" */

  1987 		len = strlen(required);

  1988 		if (!strncmp(required, provided, len) && provided[len] == '-')

  1989 			return 1;

  1990 		return 0;

  1992 	case RAZOR_VERSION_GREATER_OR_EQUAL:

  1993 		return cmp >= 0;

  1995 	case RAZOR_VERSION_GREATER:

  1996 		return cmp > 0;

  1997 	}

  1999 	/* shouldn't happen */

  2000 	return 0;

  2001 }

  2003 static struct razor_package *

  2004 find_package_for_file(struct razor_set *set, struct bitarray *pkgbits,

  2005 		      const char *filename, int installed)

  2006 {

  2007 	struct razor_package *pkgs = set->packages.data;

  2008 	struct razor_entry *entry;

  2009 	struct list *p;

  2011 	if (filename[0] != '/')

  2012 		return 0;

  2014 	entry = find_entry(set, set->files.data, filename);

  2015 	if (!entry)

  2016 		return 0;

  2018 	for (p = list_first(&entry->packages, &set->package_pool); p; p = list_next(p)) {

  2019 		if (bitarray_get(pkgbits, p->data) == installed)

  2020 			return &pkgs[p->data];

  2021 	}

  2022 	return NULL;

  2023 }

  2025 static struct razor_package *

  2026 find_installed_package_for_file(struct razor_transaction *trans,

  2027 				const char *filename)

  2028 {

  2029 	struct razor_package *pkg;

  2031 	pkg = find_package_for_file(trans->system, &trans->syspkgs,

  2032 				    filename, 1);

  2033 	if (!pkg)

  2034 		pkg = find_package_for_file(trans->upstream, &trans->uppkgs,

  2035 					    filename, 1);

  2036 	return pkg;

  2037 }

  2039 static struct razor_package *

  2040 find_uninstalled_package_for_file(struct razor_transaction *trans,

  2041 				  const char *filename)

  2042 {

  2043 	struct razor_package *pkg;

  2045 	pkg = find_package_for_file(trans->upstream, &trans->uppkgs,

  2046 				    filename, 0);

  2047 	if (!pkg)

  2048 		pkg = find_package_for_file(trans->system, &trans->syspkgs,

  2049 					    filename, 0);

  2050 	return pkg;

  2051 }

  2053 static struct razor_property *

  2054 skip_to_matching_property(struct razor_transaction *trans,

  2055 			  struct razor_property *match,

  2056 			  struct razor_property *prop)

  2057 {

  2058 	struct razor_set *mset, *pset;

  2059 	const char *ppool, *mpool;

  2060 	struct razor_property *prop_end;

  2062 	if (property_in_set(match, trans->system))

  2063 		mset = trans->system;

  2064 	else

  2065 		mset = trans->upstream;

  2067 	if (property_in_set(prop, trans->system))

  2068 		pset = trans->system;

  2069 	else if (property_in_set(prop, trans->upstream))

  2070 		pset = trans->upstream;

  2071 	else

  2072 		return prop;

  2074 	prop_end = pset->properties.data + pset->properties.size;

  2075 	ppool = pset->string_pool.data;

  2076 	mpool = mset->string_pool.data;

  2078 	while (prop < prop_end &&

  2079 	       strcmp(&ppool[prop->name], &mpool[match->name]) < 0)

  2080 		prop++;

  2081 	return prop;

  2082 }

  2084 static struct razor_package *

  2085 find_package_matching(struct razor_transaction *trans, int installed,

  2086 		      struct razor_property *prop,

  2087 		      struct razor_property *req,

  2088 		      struct razor_set *req_set)

  2089 {

  2090 	struct razor_set *set;

  2091 	struct bitarray *pkgbits;

  2092 	struct razor_package *pkgs;

  2093 	struct razor_property *props, *prop_end;

  2094 	enum razor_property_type match_type;

  2095 	const char *pool;

  2096 	const char *rpool;

  2097 	int match_name = (req->type == RAZOR_PROPERTY_OBSOLETES);

  2098 	int match;

  2100 	if (property_in_set(prop, trans->system)) {

  2101 		set = trans->system;

  2102 		pkgbits = &trans->syspkgs;

  2103 	} else if (property_in_set(prop, trans->upstream)) {

  2104 		set = trans->upstream;

  2105 		pkgbits = &trans->uppkgs;

  2106 	} else

  2107 		return NULL;

  2109 	if (!req_set) {

  2110 		if (property_in_set(req, trans->system))

  2111 			req_set = trans->system;

  2112 		else

  2113 			req_set = trans->upstream;

  2114 	}

  2115 	rpool = req_set->string_pool.data;

  2117 	if (req->type == RAZOR_PROPERTY_PROVIDES)

  2118 		match_type = RAZOR_PROPERTY_CONFLICTS;

  2119 	else

  2120 		match_type = RAZOR_PROPERTY_PROVIDES;

  2122 	pkgs = set->packages.data;

  2123 	props = set->properties.data;

  2124 	prop_end = set->properties.data + set->properties.size;

  2125 	pool = set->string_pool.data;

  2127 	/* Find first matching property */

  2128 	while (prop < prop_end &&

  2129 	       strcmp(&pool[prop->name], &rpool[req->name]) < 0)

  2130 		prop++;

  2131 	if (prop == prop_end ||

  2132 	    strcmp(&pool[prop->name], &rpool[req->name]) > 0)

  2133 		return NULL;

  2135 	if (prop->type < match_type) {

  2136 		while (prop < prop_end && prop->type != match_type)

  2137 			prop++;

  2138 	} else {

  2139 		while (prop >= props && prop->type != match_type)

  2140 			prop--;

  2141 		while (prop > props + 1 && (prop - 1)->name == prop->name &&

  2142 		       (prop - 1)->type == match_type)

  2143 			prop--;

  2144 	}

  2146 	/* Scan matching properties */

  2147 	while (prop < prop_end && prop->type == match_type &&

  2148 	       strcmp(&pool[prop->name], &rpool[req->name]) == 0) {

  2149 		if (match_type == RAZOR_PROPERTY_PROVIDES)

  2150 			match = provider_satisfies_requirement(prop, pool, req, rpool);

  2151 		else

  2152 			match = provider_satisfies_requirement(req, rpool, prop, pool);

  2153 		if (match) {

  2154 			struct list *pkg;

  2156 			for (pkg = list_first(&prop->packages, &set->package_pool); pkg; pkg = list_next(pkg)) {

  2157 				if (bitarray_get(pkgbits, pkg->data) != installed)

  2158 					continue;

  2159 				if (!match_name ||

  2160 				    strcmp(&pool[pkgs[pkg->data].name],

  2161 					   &rpool[req->name]) == 0)

  2162 					return &pkgs[pkg->data];

  2163 			}

  2164 		}

  2165 		prop++;

  2166 	}

  2168 	return NULL;

  2169 }

  2171 static struct razor_package *

  2172 find_installed_package_for_property(struct razor_transaction *trans,

  2173 				    struct razor_property *sys_start,

  2174 				    struct razor_property *up_start,

  2175 				    struct razor_property *req)

  2176 {

  2177 	struct razor_package *pkg;

  2179 	pkg = find_package_matching(trans, 1, sys_start, req, NULL);

  2180 	if (!pkg)

  2181 		pkg = find_package_matching(trans, 1, up_start, req, NULL);

  2182 	return pkg;

  2183 }

  2185 static struct razor_package *

  2186 find_uninstalled_package_for_property(struct razor_transaction *trans,

  2187 				      struct razor_property *sys_start,

  2188 				      struct razor_property *up_start,

  2189 				      struct razor_property *req)

  2190 {

  2191 	struct razor_package *pkg;

  2193 	pkg = find_package_matching(trans, 0, up_start, req, NULL);

  2194 	if (!pkg)

  2195 		pkg = find_package_matching(trans, 0, sys_start, req, NULL);

  2196 	return pkg;

  2197 }

  2199 static struct razor_transaction_package *

  2200 find_transaction_package(struct razor_transaction *trans, const char *name)

  2201 {

  2202 	struct razor_transaction_package *packages;

  2203 	int count, i;

  2205 	packages = trans->packages.data;

  2206 	count = trans->packages.size / sizeof *packages;

  2207 	for (i = 0; i < count; i++) {

  2208 		if (packages[i].name && !strcmp(packages[i].name, name))

  2209 			return &packages[i];

  2210 	}

  2211 	return NULL;

  2212 }

  2214 /* FIXME? */

  2215 static int

  2216 prop_is_being_installed(struct razor_transaction *trans,

  2217 			struct razor_property *prop)

  2218 {

  2219 	struct list *pkg;

  2221 	for (pkg = list_first(&prop->packages, &trans->upstream->package_pool); pkg; pkg = list_next(pkg)) {

  2222 		if (bitarray_get(&trans->uppkgs, pkg->data))

  2223 			return 1;

  2224 	}

  2225 	return 0;

  2226 }

  2228 static int

  2229 prop_is_being_removed(struct razor_transaction *trans,

  2230 		      struct razor_property *prop)

  2231 {

  2232 	struct list *pkg;

  2234 	for (pkg = list_first(&prop->packages, &trans->system->package_pool); pkg; pkg = list_next(pkg)) {

  2235 		if (bitarray_get(&trans->syspkgs, pkg->data))

  2236 			return 0;

  2237 	}

  2238 	return 1;

  2239 }

  2241 static int

  2242 prop_is_being_updated(struct razor_transaction *trans,

  2243 		      struct razor_property *prop)

  2244 {

  2245 	struct razor_package *packages = trans->system->packages.data;

  2246 	const char *pool = trans->system->string_pool.data;

  2247 	struct razor_transaction_package *tp;

  2248 	struct list *pkg;

  2250 	/* Assumes prop_is_being_removed returns true */

  2252 	for (pkg = list_first(&prop->packages, &trans->system->package_pool); pkg; pkg = list_next(pkg)) {

  2253 		tp = find_transaction_package(trans, &pool[packages[pkg->data].name]);

  2254 		if (tp && tp->state == RAZOR_PACKAGE_REMOVE)

  2255 			return 0;

  2256 	}

  2257 	return 1;

  2258 }

  2260 static void

  2261 add_transaction_package(struct razor_transaction *trans,

  2262 			struct razor_package *new_package,

  2263 			struct razor_package *old_package,

  2264 			enum razor_transaction_package_state state,

  2265 			const char *req_package,

  2266 			struct razor_property *req_prop)

  2267 {

  2268 	struct razor_set *new_package_set, *old_package_set, *req_set;

  2269 	struct bitarray *reqpkgbits;

  2270 	struct razor_transaction_package *tp, *already;

  2271 	const char *pool;

  2272 	struct razor_package *pkgs;

  2273 	struct list *pkg;

  2274 	int contradiction = 0;

  2276 	if (package_in_set(new_package, trans->system))

  2277 		new_package_set = trans->system;

  2278 	else

  2279 		new_package_set = trans->upstream;

  2280 	if (package_in_set(old_package, trans->system))

  2281 		old_package_set = trans->system;

  2282 	else

  2283 		old_package_set = trans->upstream;

  2284 	if (property_in_set(req_prop, trans->system)) {

  2285 		req_set = trans->system;

  2286 		reqpkgbits = &trans->syspkgs;

  2287 	} else {

  2288 		req_set = trans->upstream;

  2289 		reqpkgbits = &trans->uppkgs;

  2290 	}

  2292 	if (new_package) {

  2293 		pool = new_package_set->string_pool.data;

  2294 		already = find_transaction_package(trans, &pool[new_package->name]);

  2295 		if (already) {

  2296 			if (already->new_package == new_package) {

  2297 				/* Already taken care of */

  2298 				return;

  2299 			} else if (new_package_set == trans->upstream &&

  2300 				   already->state == RAZOR_PACKAGE_FORCED_UPDATE) {

  2301 				already->new_package = new_package;

  2302 				return;

  2303 			} else if (new_package_set == trans->upstream) {

  2304 				return;

  2305 			}

  2307 			/* Oops. We lose */

  2308 			if (state != RAZOR_PACKAGE_CONTRADICTION)

  2309 				contradiction = 1;

  2310 		}

  2311 	} else if (old_package) {

  2312 		pool = old_package_set->string_pool.data;

  2313 		already = find_transaction_package(trans, &pool[old_package->name]);

  2314 		if (already) {

  2315 			if (already->old_package == old_package) {

  2316 				/* Already taken care of */

  2317 				return;

  2318 			} else if (old_package_set == trans->system) {

  2319 				already->old_package = old_package;

  2320 				return;

  2321 			}

  2323 			/* Oops. We lose */

  2324 			if (state != RAZOR_PACKAGE_CONTRADICTION)

  2325 				contradiction = 1;

  2326 		}

  2327 	} else

  2328 		state = RAZOR_PACKAGE_UNSATISFIABLE;

  2330 	tp = array_add(&trans->packages, sizeof *tp);

  2331 	memset(tp, 0, sizeof *tp);

  2333 	if (new_package) {

  2334 		pool = new_package_set->string_pool.data;

  2335 		tp->new_package = new_package;

  2336 		tp->name = &pool[new_package->name];

  2337 		tp->new_version = &pool[new_package->version];

  2339 		pkgs = new_package_set->packages.data;

  2340 	}

  2341 	if (old_package) {

  2342 		pool = old_package_set->string_pool.data;

  2343 		tp->old_package = old_package;

  2344 		tp->name = &pool[old_package->name];

  2345 		tp->old_version = &pool[old_package->version];

  2347 		pkgs = old_package_set->packages.data;

  2348 	}

  2350 	tp->state = state;

  2351 	if (state != RAZOR_PACKAGE_INSTALL &&

  2352 	    state != RAZOR_PACKAGE_FORCED_UPDATE &&

  2353 	    state != RAZOR_PACKAGE_REMOVE &&

  2354 	    state != RAZOR_PACKAGE_OBSOLETED)

  2355 		trans->errors++;

  2357 	if (contradiction) {

  2358 		/* Do this now, after adding tp, so that it ends up

  2359 		 * after both the INSTALL and the REMOVE in the array.

  2360 		 */

  2361 		add_transaction_package(trans, new_package, old_package,

  2362 					RAZOR_PACKAGE_CONTRADICTION,

  2363 					NULL, NULL);

  2364 	}

  2366 	if (req_package)

  2367 		tp->dep_package = req_package;

  2368 	if (!req_prop)

  2369 		return;

  2371 	pool = req_set->string_pool.data;

  2372 	pkgs = req_set->packages.data;

  2373 	if (!req_package) {

  2374 		for (pkg = list_first(&req_prop->packages, &req_set->package_pool); pkg; pkg = list_next(pkg)) {

  2375 			if (bitarray_get(reqpkgbits, pkg->data))

  2376 				break;

  2377 		}

  2378 		if (pkg)

  2379 			tp->dep_package = &pool[pkgs[pkg->data].name];

  2380 	}

  2382 	tp->dep_type = req_prop->type;

  2383 	tp->dep_property = &pool[req_prop->name];

  2384 	tp->dep_relation = req_prop->relation;

  2385 	tp->dep_version = &pool[req_prop->version];

  2386 }

  2388 static void

  2389 razor_transaction_satisfy(struct razor_transaction *trans)

  2390 {

  2391 	struct razor_package *spkgs, *upkgs, *pkg;

  2392 	struct razor_property *sp, *sprops, *sprop_end;

  2393 	struct razor_property *up, *uprops, *uprop_end;

  2394 	struct razor_property *sr, *ur, *first_up;

  2395 	const char *spool, *upool, *removed_package;

  2396 	struct list *reqpkg;

  2398 	spkgs = trans->system->packages.data;

  2399 	sprops = trans->system->properties.data;

  2400 	sprop_end = trans->system->properties.data + trans->system->properties.size;

  2401 	spool = trans->system->string_pool.data;

  2402 	upkgs = trans->upstream->packages.data;

  2403 	uprops = trans->upstream->properties.data;

  2404 	uprop_end = trans->upstream->properties.data + trans->upstream->properties.size;

  2405 	upool = trans->upstream->string_pool.data;

  2407 	sp = sprops;

  2408 	for (up = uprops; up < uprop_end; up++) {

  2409 		/* Skip 'up' ahead to a property of a package which is

  2410 		 * to-be-installed.

  2411 		 */

  2412 		while (up < uprop_end &&

  2413 		       !prop_is_being_installed(trans, up))

  2414 			up++;

  2415 		if (up == uprop_end)

  2416 			break;

  2417 		sp = skip_to_matching_property(trans, up, sp);

  2419 		switch (up->type) {

  2420 		case RAZOR_PROPERTY_REQUIRES:

  2421 			if (!strncmp(&upool[up->name], "rpmlib(", 7))

  2422 				break;

  2424 			if (find_installed_package_for_property(trans, sp, up, up) ||

  2425 			    find_installed_package_for_file(trans, &upool[up->name])) {

  2426 				/* Requires something that is either installed

  2427 				 * or to-be-installed.

  2428 				 */

  2429 				break;

  2430 			}

  2432 			/* See if we can install a new upstream provider */

  2433 			pkg = find_uninstalled_package_for_property(trans, sp, up, up);

  2434 			if (!pkg)

  2435 				pkg = find_uninstalled_package_for_file(trans, &upool[up->name]);

  2436 			add_transaction_package(trans, pkg, NULL,

  2437 						RAZOR_PACKAGE_INSTALL,

  2438 						NULL, up);

  2439 			break;

  2441 		case RAZOR_PROPERTY_PROVIDES:

  2442 			/* find_installed_package_for_property works backwards

  2443 			 * here, finding a *conflicting* installed package.

  2444 			 */

  2445 			pkg = find_installed_package_for_property(trans, sp, up, up);

  2446 			if (!pkg)

  2447 				break;

  2449 			if (package_in_set(pkg, trans->system)) {

  2450 				/* pkg CONFLICTS with what 'up' PROVIDES. Try

  2451 				 * finding an upgrade

  2452 				 */

  2453 				add_transaction_package(trans, NULL, pkg,

  2454 							RAZOR_PACKAGE_FORCED_UPDATE,

  2455 							&upool[up->name], sp);

  2456 			} else {

  2457 				add_transaction_package(trans, NULL, pkg,

  2458 							RAZOR_PACKAGE_CONTRADICTION,

  2459 							NULL, up);

  2460 			}

  2461 			break;

  2463 		case RAZOR_PROPERTY_CONFLICTS:

  2464 			pkg = find_installed_package_for_property(trans, sp, up, up);

  2465 			if (!pkg)

  2466 				break;

  2468 			if (package_in_set(pkg, trans->system)) {

  2469 				/* Conflicts with something already installed.

  2470 				 * Try to upgrade out.

  2471 				 */

  2472 				add_transaction_package(trans, NULL, pkg,

  2473 							RAZOR_PACKAGE_FORCED_UPDATE,

  2474 							NULL, up);

  2475 			} else {

  2476 				add_transaction_package(trans, pkg, NULL,

  2477 							RAZOR_PACKAGE_CONTRADICTION,

  2478 							NULL, up);

  2479 			}

  2480 			break;

  2482 		case RAZOR_PROPERTY_OBSOLETES:

  2483 			pkg = find_installed_package_for_property(trans, sp, up, up);

  2484 			if (pkg) {

  2485 				/* If pkg is to-be-installed, this

  2486 				 * will add a CONTRADICTION error as well.

  2487 				 */

  2488 				add_transaction_package(trans, NULL, pkg,

  2489 							RAZOR_PACKAGE_OBSOLETED,

  2490 							NULL, up);

  2491 			}

  2492 			break;

  2494 		default:

  2495 			/* can't happen */

  2496 			break;

  2497 		}

  2498 	}

  2500 	up = uprops;

  2501 	for (sp = sprops; sp < sprop_end; sp++) {

  2502 		/* Skip 'sp' ahead to a PROVIDES of a package which is

  2503 		 * to-be-removed.

  2504 		 */

  2505 		while (sp < sprop_end &&

  2506 		       (sp->type != RAZOR_PROPERTY_PROVIDES ||

  2507 			!prop_is_being_removed(trans, sp)))

  2508 			sp++;

  2509 		if (sp == sprop_end)

  2510 			break;

  2512 		removed_package = &spool[spkgs[list_first(&sp->packages, &trans->system->package_pool)->data].name];

  2514 		/* Skip 'up' to match */

  2515 		up = skip_to_matching_property(trans, sp, up);

  2516 		ur = first_up = up;

  2518 		/* If the package is just being upgraded, we may

  2519 		 * already be installing an identical PROVIDES, so

  2520 		 * check for that.

  2521 		 */

  2522 		while (up < uprop_end &&

  2523 		       strcmp(&spool[sp->name], &upool[up->name]) == 0 &&

  2524 		       (up->type != RAZOR_PROPERTY_PROVIDES ||

  2525 			sp->relation != up->relation ||

  2526 			strcmp(&spool[sp->name], &upool[up->name]) != 0))

  2527 			up++;

  2528 		if (up < uprop_end &&

  2529 		    up->type == RAZOR_PROPERTY_PROVIDES &&

  2530 		    strcmp(&spool[sp->name], &upool[up->name]) == 0 &&

  2531 		    sp->relation == up->relation &&

  2532 		    strcmp(&spool[sp->version], &upool[up->version]) == 0 &&

  2533 		    prop_is_being_installed(trans, up)) {

  2534 			up = first_up;

  2535 			continue;

  2536 		}

  2537 		up = first_up;

  2539 		/* For all still-installed packages that require

  2540 		 * sp->name, see if they are satisfied by any other

  2541 		 * still-installed or to-be-installed property. If

  2542 		 * not, either remove or attempt to update the

  2543 		 * package, depending on why the required property has

  2544 		 * disappeared

  2545 		 */

  2546 		sr = sp;

  2547 		while (sr > sprops + 1 && (sr - 1)->name == sr->name)

  2548 			sr--;

  2549 		for (; sr->type == RAZOR_PROPERTY_REQUIRES; sr++) {

  2550 			if (prop_is_being_removed(trans, sr))

  2551 				continue;

  2552 			if (find_installed_package_for_property(trans, sp, up, sr))

  2553 				continue;

  2555 			for (reqpkg = list_first(&sr->packages, &trans->system->package_pool); reqpkg; reqpkg = list_next(reqpkg)) {

  2556 				if (!bitarray_get(&trans->syspkgs, reqpkg->data))

  2557 					continue;

  2558 				pkg = &spkgs[reqpkg->data];

  2559 				if (prop_is_being_updated(trans, sp)) {

  2560 					add_transaction_package(trans, NULL, pkg,

  2561 								RAZOR_PACKAGE_FORCED_UPDATE,

  2562 								removed_package, NULL);

  2563 				} else {

  2564 					add_transaction_package(trans, NULL, pkg,

  2565 								RAZOR_PACKAGE_REMOVE,

  2566 								removed_package, sr);

  2567 				}

  2568 			}

  2569 		}

  2570 	}

  2571 }

  2573 void

  2574 razor_transaction_install_package(struct razor_transaction *transaction,

  2575 				  struct razor_package *package)

  2576 {

  2577 	add_transaction_package(transaction, package, NULL,

  2578 				RAZOR_PACKAGE_INSTALL, NULL, NULL);

  2579 }

  2581 void

  2582 razor_transaction_remove_package(struct razor_transaction *transaction,

  2583 				 struct razor_package *package)

  2584 {

  2585 	add_transaction_package(transaction, NULL, package,

  2586 				RAZOR_PACKAGE_REMOVE, NULL, NULL);

  2587 }

  2589 void

  2590 razor_transaction_update_all(struct razor_transaction *trans)

  2591 {

  2592 	struct razor_package *sp, *spkgs, *send, *up, *upkgs, *uend;

  2593 	const char *spool, *upool;

  2595 	spkgs = trans->system->packages.data;

  2596 	send = trans->system->packages.data + trans->system->packages.size;

  2597 	spool = trans->system->string_pool.data;

  2598 	up = upkgs = trans->upstream->packages.data;

  2599 	uend = trans->upstream->packages.data + trans->upstream->packages.size;

  2600 	upool = trans->upstream->string_pool.data;

  2602 	for (sp = spkgs; sp < send; sp++) {

  2603 		while (up < uend && strcmp(&spool[sp->name], &upool[up->name]) > 0)

  2604 			up++;

  2605 		if (strcmp(&spool[sp->name], &upool[up->name]) == 0 &&

  2606 		    versioncmp(&spool[sp->version], &upool[up->version]) < 0) {

  2607 			add_transaction_package(trans, up, sp,

  2608 						RAZOR_PACKAGE_INSTALL,

  2609 						NULL, NULL);

  2610 		}

  2611 	}

  2612 }

  2614 struct razor_transaction *

  2615 razor_transaction_create(struct razor_set *system, struct razor_set *upstream)

  2616 {

  2617 	struct razor_transaction *trans;

  2618 	int count;

  2620 	trans = zalloc(sizeof *trans);

  2622 	trans->system = system;

  2623 	trans->upstream = upstream ? upstream : razor_set_create();

  2624 	array_init(&trans->packages);

  2625 	count = trans->system->packages.size / sizeof (struct razor_package);

  2626 	bitarray_init(&trans->syspkgs, count, 1);

  2627 	count = trans->upstream->packages.size / sizeof (struct razor_package);

  2628 	bitarray_init(&trans->uppkgs, count, 0);

  2630 	return trans;

  2631 }

  2633 static void

  2634 resolve_transaction(struct razor_transaction *trans)

  2635 {

  2636 	int start, end;

  2638 	if (trans->package_count > 0)

  2639 		/* Already did this, return. */

  2640 		return;

  2642 	start = 0;

  2643 	end = trans->packages.size / sizeof (struct razor_transaction_package);

  2645 	while (start != end) {

  2646 		resolve_new_packages(trans, start, end);

  2647 		if (trans->errors)

  2648 			break;

  2650 		razor_transaction_satisfy(trans);

  2652 		start = end;

  2653 		end = trans->packages.size / sizeof (struct razor_transaction_package);

  2654 	}

  2656 	trans->package_count = end;

  2657 }

  2659 const char * const razor_version_relations[] = {

  2660 	/* same order as enum razor_version_relation */

  2661 	"<", "<=", "=", ">=", ">"

  2662 };

  2664 const char * const razor_property_types[] = {

  2665 	/* same order as enum razor_property_type */

  2666 	"requires", "provides", "conflicts with", "obsoletes"

  2667 };

  2669 static void

  2670 print_requirement(struct razor_transaction_package *p)

  2671 {

  2672 	if (p->dep_type == RAZOR_PROPERTY_CONFLICTS &&

  2673 	    !strcmp(p->dep_package, p->name)) {

  2674 		printf(" because %s %s conflicts with %s",

  2675 		       p->name, p->old_version, p->dep_property);

  2676 		if (*p->dep_version) {

  2677 			printf(" %s %s",

  2678 			       razor_version_relations[p->dep_relation],

  2679 			       p->dep_version);

  2680 		}

  2681 	} else {

  2682 		if (strcmp(p->name, p->dep_package) != 0)

  2683 			printf(" for %s", p->dep_package);

  2684 		if (*p->dep_version) {

  2685 			printf(", which %s %s %s %s",

  2686 			       razor_property_types[p->dep_type],

  2687 			       p->dep_property,

  2688 			       razor_version_relations[p->dep_relation],

  2689 			       p->dep_version);

  2690 		} else if (strcmp(p->dep_property, p->name) != 0) {

  2691 			printf(", which %s %s",

  2692 			       razor_property_types[p->dep_type],

  2693 			       p->dep_property);

  2694 		}

  2695 	}

  2696 }

  2698 int

  2699 razor_transaction_resolve(struct razor_transaction *trans)

  2700 {

  2701 	struct razor_transaction_package *p, *pend, *tps;

  2702 	int errors_only = 0;

  2704 	resolve_transaction(trans);

  2706 	tps = trans->packages.data;

  2707 	pend = trans->packages.data + trans->packages.size;

  2708 	for (p = trans->packages.data; p < pend; p++) {

  2709 		switch (p->state) {

  2710 		case RAZOR_PACKAGE_INSTALL:

  2711 			if (errors_only)

  2712 				break;

  2714 			printf("Installing %s %s", p->name, p->new_version);

  2715 			if (p->dep_package)

  2716 				print_requirement(p);

  2717 			printf("\n");

  2718 			break;

  2720 		case RAZOR_PACKAGE_FORCED_UPDATE:

  2721 			if (errors_only)

  2722 				break;

  2724 			printf("Updating %s to %s due to update of %s\n",

  2725 			       p->name, p->new_version, p->dep_package);

  2726 			break;

  2728 		case RAZOR_PACKAGE_REMOVE:

  2729 			if (errors_only)

  2730 				break;

  2731 			printf("Removing %s %s", p->name, p->old_version);

  2732 			if (p->dep_package) {

  2733 				printf(" which required %s",

  2734 				       p->dep_package);

  2735 				if (strcmp(p->dep_property, p->dep_package) != 0)

  2736 					printf(" for %s", p->dep_property);

  2737 			}

  2738 			printf("\n");

  2739 			break;

  2741 		case RAZOR_PACKAGE_OBSOLETED:

  2742 			if (errors_only)

  2743 				break;

  2744 			printf("Removing %s %s", p->name, p->old_version);

  2745 			if (p->dep_package) {

  2746 				printf(" which is obsoleted by %s",

  2747 				       p->dep_package);

  2748 			}

  2749 			printf("\n");

  2750 			break;

  2752 		case RAZOR_PACKAGE_INSTALL_UNAVAILABLE:

  2753 			printf("Error: can't find %s", p->name);

  2754 			if (p->dep_package) {

  2755 				printf(" (which is required");

  2756 				print_requirement(p);

  2757 				printf(")");

  2758 			}

  2759 			printf("\n");

  2760 			errors_only = 1;

  2761 			break;

  2763 		case RAZOR_PACKAGE_UPDATE_UNAVAILABLE:

  2764 			printf("Error: can't find an updated version of %s (which must be updated due to update of %s)\n",

  2765 			       p->name, p->dep_package);

  2766 			errors_only = 1;

  2767 			break;

  2769 		case RAZOR_PACKAGE_REMOVE_NOT_INSTALLED:

  2770 			printf("Error: can't remove %s: not installed\n", p->name);

  2771 			errors_only = 1;

  2772 			break;

  2774 		case RAZOR_PACKAGE_UP_TO_DATE:

  2775 			printf("Error: can't update %s", p->name);

  2776 			if (p->dep_package)

  2777 				printf(" (which must be updated due to update of %s)", p->dep_package);

  2778 			printf(": %s is most recent version\n", p->old_version);

  2779 			errors_only = 1;

  2780 			break;

  2782 		case RAZOR_PACKAGE_CONTRADICTION:

  2783 			printf("Error: package %s is marked for both installation and removal\n", p->name);

  2784 			errors_only = 1;

  2785 			break;

  2787 		case RAZOR_PACKAGE_OLD_CONFLICT:

  2788 			printf("Error: can't install %s, because installed package %s conflicts with ",

  2789 			       p->name, p->dep_package);

  2790 			if (*p->dep_version) {

  2791 				printf("%s %s %s",

  2792 				       p->dep_property,

  2793 				       razor_version_relations[p->dep_relation],

  2794 				       p->dep_version);

  2795 			} else

  2796 				printf("it");

  2797 			printf("\n");

  2799 			errors_only = 1;

  2800 			break;

  2802 		case RAZOR_PACKAGE_NEW_CONFLICT:

  2803 			printf("Error: can't install %s, because it conflicts with %s",

  2804 			       p->name, p->dep_package);

  2805 			if (*p->dep_version) {

  2806 				printf(" %s %s",

  2807 				       razor_version_relations[p->dep_relation],

  2808 				       p->dep_version);

  2809 			}

  2810 			printf("\n");

  2812 			errors_only = 1;

  2813 			break;

  2815 		case RAZOR_PACKAGE_UNSATISFIABLE:

  2816 			printf("Error: can't find package for %s", p->dep_property);

  2817 			if (*p->dep_version) {

  2818 				printf(" %s %s",

  2819 					razor_version_relations[p->dep_relation],

  2820 					p->dep_version);

  2821 			}

  2822 			printf(" which is required by %s\n",

  2823 				p->dep_package);

  2824 			errors_only = 1;

  2825 			break;

  2827 		default:

  2828 			/* Shouldn't actually happen */

  2829 			break;

  2830 		}

  2831 	}

  2833 	return trans->errors;

  2834 }

  2836 int

  2837 razor_transaction_unsatisfied_property(struct razor_transaction *trans,

  2838 				       const char *name,

  2839 				       enum razor_version_relation rel,

  2840 				       const char *version)

  2841 {

  2842 	struct razor_transaction_package *p, *end;

  2844 	end = trans->packages.data + trans->packages.size;

  2845 	for (p = trans->packages.data; p < end; p++) {

  2846 		if (p->state != RAZOR_PACKAGE_UNSATISFIABLE)

  2847 			continue;

  2848 		if (strcmp(name, p->dep_property) != 0 ||

  2849 		    rel != p->dep_relation ||

  2850 		    strcmp(version, p->dep_version) != 0)

  2851 			continue;

  2853 		return 1;

  2854 	}

  2856 	return 0;

  2857 }

  2859 struct razor_set *

  2860 razor_transaction_finish(struct razor_transaction *trans)

  2861 {

  2862 	struct array install_packages, remove_packages;

  2863 	struct razor_merger *merger;

  2864 	struct razor_package *pkg, *i, *iend, *r, *rend, *s, *send;

  2865 	struct razor_set *set;

  2866 	struct source *source1, *source2;

  2867 	char *spool, *ipool, *rpool;

  2868 	uint32_t *map;

  2869 	struct razor_transaction_package *p, *end;

  2870 	int cmp;

  2872 	/* FIXME */

  2873 	if (trans->errors)

  2874 		return NULL;

  2876 	/* Sort the transaction packages into two arrays */

  2877 	array_init(&install_packages);

  2878 	array_init(&remove_packages);

  2880 	end = trans->packages.data + trans->packages.size;

  2881 	for (p = trans->packages.data; p < end; p++) {

  2882 		if (p->new_package) {

  2883 			pkg = array_add(&install_packages, sizeof *pkg);

  2884 			*pkg = *p->new_package;

  2885 		} else {

  2886 			pkg = array_add(&remove_packages, sizeof *pkg);

  2887 			*pkg = *p->old_package;

  2888 		}

  2889 	}

  2890 	map = razor_qsort_with_data(install_packages.data,

  2891 				    install_packages.size / sizeof *pkg,

  2892 				    sizeof *pkg,

  2893 				    compare_packages,

  2894 				    trans->upstream);

  2895 	free(map);

  2896 	map = razor_qsort_with_data(remove_packages.data,

  2897 				    remove_packages.size / sizeof *pkg,

  2898 				    sizeof *pkg,

  2899 				    compare_packages,

  2900 				    trans->system);

  2901 	free(map);

  2903 	merger = razor_merger_create(trans->system, trans->upstream);

  2905 	source1 = &merger->source1;

  2906 	source2 = &merger->source2;

  2908 	i = install_packages.data;

  2909 	iend = install_packages.data + install_packages.size;

  2910 	ipool = trans->upstream->string_pool.data;

  2912 	r = remove_packages.data;

  2913 	rend = remove_packages.data + remove_packages.size;

  2914 	rpool = trans->system->string_pool.data;

  2916 	s = trans->system->packages.data;

  2917 	send = trans->system->packages.data + trans->system->packages.size;

  2918 	spool = trans->system->string_pool.data;

  2920 	while (s < send || i < iend) {

  2921 		/* Check if s is being removed */

  2922 		if (s < send && r < rend &&

  2923 		    s->name == r->name && s->version && r->version) {

  2924 			s++;

  2925 			r++;

  2926 			continue;

  2927 		}

  2929 		if (s < send && i < iend)

  2930 			cmp = strcmp(&spool[s->name], &ipool[i->name]);

  2931 		else if (s < send)

  2932 			cmp = -1;

  2933 		else

  2934 			cmp = 1;

  2935 		if (cmp < 0) {

  2936 			add_package(merger, s, source1, 0);

  2937 			s++;

  2938 		} else if (cmp == 0) {

  2939 			add_package(merger, i, source2, UPSTREAM_SOURCE);

  2940 			s++;

  2941 			i++;

  2942 		} else {

  2943 			add_package(merger, i, source2, UPSTREAM_SOURCE);

  2944 			i++;

  2945 		}

  2946 	}

  2948 	array_release(&install_packages);

  2949 	array_release(&remove_packages);

  2951 	set = razor_merger_finish(merger);

  2952 	razor_transaction_destroy(trans);

  2954 	return set;

  2955 }

  2957 void

  2958 razor_transaction_destroy(struct razor_transaction *trans)

  2959 {

  2960 	struct razor_transaction_package *p, *end;

  2962 	end = trans->packages.data + trans->packages.size;

  2963 	for (p = trans->packages.data; p < end; p++) {

  2964 		if (!p->dep_package &&

  2965 		    (p->state == RAZOR_PACKAGE_INSTALL_UNAVAILABLE ||

  2966 		     p->state == RAZOR_PACKAGE_REMOVE_NOT_INSTALLED))

  2967 			free((char *)p->name);

  2968 	}

  2970 	array_release(&trans->packages);

  2971 	bitarray_release(&trans->syspkgs);

  2972 	bitarray_release(&trans->uppkgs);

  2973 	free(trans);

  2975 	/* FIXME: free upstream if it was created as an empty set */

  2976 }

author	Kristian H?gsberg <krh@jiraiya.boston.redhat.com>
	Wed Apr 09 02:41:03 2008 -0400 (2008-04-09)
changeset 211	cf0ca962262b
parent 209	78afac5bb7b8
child 212	e8f493d8ff9a
permissions	-rw-r--r--