razor: razor.c@9745a231f8d7

     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 	struct list_head properties;

    49 	struct list_head files;

    50 };

    52 struct razor_property {

    53 	uint name  : 24;

    54 	uint flags : 6;

    55 	uint type  : 2;

    56 	uint32_t relation;

    57 	uint32_t version;

    58 	struct list_head packages;

    59 };

    61 struct razor_entry {

    62 	uint name  : 24;

    63 	uint flags : 8;

    64 	uint32_t start;

    65 	struct list_head packages;

    66 };

    68 #define RAZOR_ENTRY_LAST	0x80

    70 struct razor_set {

    71 	struct array string_pool;

    72  	struct array packages;

    73  	struct array properties;

    74  	struct array files;

    75 	struct array package_pool;

    76  	struct array property_pool;

    77  	struct array file_pool;

    78 	struct razor_set_header *header;

    79 };

    81 struct import_entry {

    82 	uint32_t package;

    83 	char *name;

    84 };

    86 struct import_directory {

    87 	uint32_t name, count;

    88 	struct array files;

    89 	struct array packages;

    90 	struct import_directory *last;

    91 };

    93 struct razor_importer {

    94 	struct razor_set *set;

    95 	struct hashtable table;

    96 	struct razor_package *package;

    97 	struct array properties;

    98 	struct array files;

    99 };

   101 static void *

   102 zalloc(size_t size)

   103 {

   104 	void *p;

   106 	p = malloc(size);

   107 	memset(p, 0, size);

   109 	return p;

   110 }

   112 struct razor_set_section razor_sections[] = {

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

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

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

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

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

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

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

   120 };

   122 struct razor_set *

   123 razor_set_create(void)

   124 {

   125 	struct razor_set *set;

   126 	struct razor_entry *e;

   128 	set = zalloc(sizeof *set);

   130 	array_init(&set->files);

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

   132 	e->name = 0;

   133 	e->flags = RAZOR_ENTRY_LAST;

   134 	e->start = 0;

   135 	list_set_empty(&e->packages);

   137 	return set;

   138 }

   140 struct razor_set *

   141 razor_set_open(const char *filename)

   142 {

   143 	struct razor_set *set;

   144 	struct razor_set_section *s;

   145 	struct stat stat;

   146 	struct array *array;

   147 	int fd;

   149 	set = zalloc(sizeof *set);

   150 	fd = open(filename, O_RDONLY);

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

   152 		return NULL;

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

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

   155 		free(set);

   156 		return NULL;

   157 	}

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

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

   161 			continue;

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

   163 			continue;

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

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

   166 		array->size = s->size;

   167 		array->alloc = s->size;

   168 	}

   169 	close(fd);

   171 	return set;

   172 }

   174 void

   175 razor_set_destroy(struct razor_set *set)

   176 {

   177 	unsigned int size;

   178 	struct array *a;

   179 	int i;

   181 	if (set->header) {

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

   183 			;

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

   185 		munmap(set->header, size);

   186 	} else {

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

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

   189 			free(a->data);

   190 		}

   191 	}

   193 	free(set);

   194 }

   196 int

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

   198 {

   199 	char data[4096];

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

   201 	struct array *a;

   202 	uint32_t offset;

   203 	int i, fd;

   205 	memset(data, 0, sizeof data);

   206 	header->magic = RAZOR_MAGIC;

   207 	header->version = RAZOR_VERSION;

   208 	offset = sizeof data;

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

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

   212 			continue;

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

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

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

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

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

   218 	}

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

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

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

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

   225 	if (fd < 0)

   226 		return -1;

   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 	close(fd);

   240 	return 0;

   241 }

   243 void

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

   245 		const char *version, const char *release)

   246 {

   247 	int len;

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

   250 		*evr_buf = '\0';

   251 		return;

   252 	}

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

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

   256 		evr_buf += len;

   257 		size -= len;

   258 	}

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

   260 	evr_buf += len;

   261 	size -= len;

   262 	if (release && *release)

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

   264 }

   266 void

   267 razor_importer_begin_package(struct razor_importer *importer,

   268 			     const char *name, const char *version)

   269 {

   270 	struct razor_package *p;

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

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

   274 	p->flags = 0;

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

   277 	importer->package = p;

   278 	array_init(&importer->properties);

   279 }

   281 void

   282 razor_importer_finish_package(struct razor_importer *importer)

   283 {

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

   285 		       &importer->set->property_pool,

   286 		       &importer->properties,

   287 		       1);

   289 	array_release(&importer->properties);

   290 }

   292 void

   293 razor_importer_add_property(struct razor_importer *importer,

   294 			    const char *name,

   295 			    enum razor_version_relation relation,

   296 			    const char *version,

   297 			    enum razor_property_type type)

   298 {

   299 	struct razor_property *p;

   300 	uint32_t *r;

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

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

   304 	p->flags = 0;

   305 	p->type = type;

   306 	p->relation = relation;

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

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

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

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

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

   313 }

   315 void

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

   317 {

   318 	struct import_entry *e;

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

   322 	e->package = importer->package -

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

   324 	e->name = strdup(name);

   325 }

   327 struct razor_importer *

   328 razor_importer_new(void)

   329 {

   330 	struct razor_importer *importer;

   332 	importer = zalloc(sizeof *importer);

   333 	importer->set = razor_set_create();

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

   336 	return importer;

   337 }

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

   340 void

   341 razor_importer_destroy(struct razor_importer *importer)

   342 {

   343 	/* FIXME: write this */

   344 }

   347 typedef int (*compare_with_data_func_t)(const void *p1,

   348 					const void *p,

   349 					void *data);

   351 struct qsort_context {

   352 	size_t size;

   353 	compare_with_data_func_t compare;

   354 	void *data;

   355 };

   357 static void

   358 qsort_swap(void *p1, void *p2, size_t size)

   359 {

   360 	char buffer[size];

   362 	memcpy(buffer, p1, size);

   363 	memcpy(p1, p2, size);

   364 	memcpy(p2, buffer, size);

   365 }

   367 static void

   368 __qsort_with_data(void *base, size_t nelem, uint32_t *map,

   369 		  struct qsort_context *ctx)

   370 {

   371 	void *p, *start, *end, *pivot;

   372 	uint32_t *mp, *mstart, *mend, tmp;

   373 	int left, right, result;

   374 	size_t size = ctx->size;

   376 	p = base;

   377 	start = base;

   378 	end = base + nelem * size;

   379 	mp = map;

   380 	mstart = map;

   381 	mend = map + nelem;

   382 	pivot = base + (random() % nelem) * size;

   384 	while (p < end) {

   385 		result = ctx->compare(p, pivot, ctx->data);

   386 		if (result < 0) {

   387 			qsort_swap(p, start, size);

   388 			tmp = *mp;

   389 			*mp = *mstart;

   390 			*mstart = tmp;

   391 			if (start == pivot)

   392 				pivot = p;

   393 			start += size;

   394 			mstart++;

   395 			p += size;

   396 			mp++;

   397 		} else if (result == 0) {

   398 			p += size;

   399 			mp++;

   400 		} else {

   401  			end -= size;

   402 			mend--;

   403 			qsort_swap(p, end, size);

   404 			tmp = *mp;

   405 			*mp = *mend;

   406 			*mend = tmp;

   407 			if (end == pivot)

   408 				pivot = p;

   409 		}

   410 	}

   412 	left = (start - base) / size;

   413 	right = (base + nelem * size - end) / size;

   414 	if (left > 1)

   415 		__qsort_with_data(base, left, map, ctx);

   416 	if (right > 1)

   417 		__qsort_with_data(end, right, mend, ctx);

   418 }

   420 static uint32_t *

   421 qsort_with_data(void *base, size_t nelem, size_t size,

   422 		compare_with_data_func_t compare, void *data)

   423 {

   424 	struct qsort_context ctx;

   425 	uint32_t *map;

   426 	int i;

   428 	if (nelem == 0)

   429 		return NULL;

   431 	ctx.size = size;

   432 	ctx.compare = compare;

   433 	ctx.data = data;

   435 	map = malloc(nelem * sizeof (uint32_t));

   436 	for (i = 0; i < nelem; i++)

   437 		map[i] = i;

   439 	__qsort_with_data(base, nelem, map, &ctx);

   441 	return map;

   442 }

   444 static int

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

   446 {

   447 	const char *p1, *p2;

   448 	long n1, n2;

   449 	int res;

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

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

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

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

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

   457 	if (res < 0) {

   458 		n1 = 0;

   459 		p1 = s1;

   460 		p2++;

   461 	} else if (res > 0) {

   462 		p1++;

   463 		n2 = 0;

   464 		p2 = s2;

   465 	}

   467 	if (n1 != n2)

   468 		return n1 - n2;

   469 	while (*p1 && *p2) {

   470 		if (*p1 != *p2)

   471 			return *p1 - *p2;

   472 		p1++;

   473 		p2++;

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

   475 			return versioncmp(p1, p2);

   476 	}

   478 	return *p1 - *p2;

   479 }

   481 static int

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

   483 {

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

   485 	struct razor_set *set = data;

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

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

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

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

   491 	else

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

   493 }

   495 static int

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

   497 {

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

   499 	struct razor_set *set = data;

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

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

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

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

   505 		return prop1->type - prop2->type;

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

   507 		return prop1->relation - prop2->relation;

   508 	else

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

   510 }

   512 static uint32_t *

   513 uniqueify_properties(struct razor_set *set)

   514 {

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

   516 	struct array *pkgs, *p;

   517 	struct list_head *r;

   518 	uint32_t *map, *rmap;

   519 	int i, count, unique;

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

   522 	map = qsort_with_data(set->properties.data,

   523 			      count,

   524 			      sizeof(struct razor_property),

   525 			      compare_properties,

   526 			      set);

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

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

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

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

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

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

   534 			up++;

   535 			up->name = rp->name;

   536 			up->flags = 0;

   537 			up->type = rp->type;

   538 			up->relation = rp->relation;

   539 			up->version = rp->version;

   540 		}

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

   543 		rmap[map[i]] = unique;

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

   545 		*r = rp->packages;

   546 	}

   547 	free(map);

   549 	if (up != rp)

   550 		up++;

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

   552 	rp_end = up;

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

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

   555 		array_release(p);

   556 	}

   558 	free(pkgs);

   560 	return rmap;

   561 }

   563 static int

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

   565 {

   566 	const struct import_entry *e1 = p1;

   567 	const struct import_entry *e2 = p2;

   568 	const char *n1 = e1->name;

   569 	const char *n2 = e2->name;

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

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

   573 	 * sort before "foo.conf"

   574 	 *

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

   576 	 */

   577 	while (*n1 && *n2) {

   578 		if (*n1 < *n2)

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

   580 		else if (*n1 > *n2)

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

   582 		n1++;

   583 		n2++;

   584 	}

   585 	if (*n1)

   586 		return 1;

   587 	else if (*n2)

   588 		return -1;

   589 	else

   590 		return 0;

   591 }

   593 static void

   594 count_entries(struct import_directory *d)

   595 {

   596 	struct import_directory *p, *end;

   598 	p = d->files.data;

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

   600 	d->count = 0;

   601 	while (p < end) {

   602 		count_entries(p);

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

   604 		p++;

   605 	}

   606 }

   608 static void

   609 serialize_files(struct razor_set *set,

   610 		struct import_directory *d, struct array *array)

   611 {

   612 	struct import_directory *p, *end;

   613 	struct razor_entry *e = NULL;

   614 	uint32_t s;

   616 	p = d->files.data;

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

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

   619 	while (p < end) {

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

   621 		e->name = p->name;

   622 		e->flags = 0;

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

   624 		s += p->count;

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

   627 		array_release(&p->packages);

   628 		p++;

   629 	}

   630 	if (e != NULL)

   631 		e->flags |= RAZOR_ENTRY_LAST;

   633 	p = d->files.data;

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

   635 	while (p < end) {

   636 		serialize_files(set, p, array);

   637 		p++;

   638 	}

   639 }

   641 static void

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

   643 {

   644 	struct razor_property *p, *end;

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

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

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

   649 }

   651 static void

   652 build_file_tree(struct razor_importer *importer)

   653 {

   654 	int count, i, length;

   655 	struct import_entry *filenames;

   656 	char *f, *end;

   657 	uint32_t name, *r;

   658 	char dirname[256];

   659 	struct import_directory *d, root;

   660 	struct razor_entry *e;

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

   663 	qsort_with_data(importer->files.data,

   664 			count,

   665 			sizeof (struct import_entry),

   666 			compare_filenames,

   667 			NULL);

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

   670 	array_init(&root.files);

   671 	array_init(&root.packages);

   672 	root.last = NULL;

   674 	filenames = importer->files.data;

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

   676 		f = filenames[i].name;

   677 		if (*f != '/')

   678 			continue;

   679 		f++;

   681 		d = &root;

   682 		while (*f) {

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

   684 			if (end == NULL)

   685 				end = f + strlen(f);

   686 			length = end - f;

   687 			memcpy(dirname, f, length);

   688 			dirname[length] ='\0';

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

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

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

   692 				d->last->name = name;

   693 				d->last->last = NULL;

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

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

   696 			}

   697 			d = d->last;

   698 			f = end + 1;

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

   700 				break;

   701 		}

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

   704 		*r = filenames[i].package;

   705 		free(filenames[i].name);

   706 	}

   708 	count_entries(&root);

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

   710 	e->name = root.name;

   711 	e->flags = RAZOR_ENTRY_LAST;

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

   713 	list_set_empty(&e->packages);

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

   717 	array_release(&importer->files);

   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 	map = uniqueify_properties(importer->set);

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

   761 	free(map);

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

   764 	map = qsort_with_data(importer->set->packages.data,

   765 			      count,

   766 			      sizeof(struct razor_package),

   767 			      compare_packages,

   768 			      importer->set);

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

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

   772 		rmap[map[i]] = i;

   773 	free(map);

   775 	build_file_tree(importer);

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

   777 	build_package_file_lists(importer->set, rmap);

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

   779 	free(rmap);

   781 	set = importer->set;

   782 	hashtable_release(&importer->table);

   783 	free(importer);

   785 	return set;

   786 }

   788 struct razor_package_iterator {

   789 	struct razor_set *set;

   790 	struct razor_package *package, *end;

   791 	struct list *index;

   792 };

   794 static struct razor_package_iterator *

   795 razor_package_iterator_create_with_index(struct razor_set *set,

   796 					 struct list *index)

   797 {

   798 	struct razor_package_iterator *pi;

   800 	pi = zalloc(sizeof *pi);

   801 	pi->set = set;

   802 	pi->index = index;

   804 	return pi;

   805 }

   807 struct razor_package_iterator *

   808 razor_package_iterator_create(struct razor_set *set)

   809 {

   810 	struct razor_package_iterator *pi;

   812 	pi = zalloc(sizeof *pi);

   813 	pi->set = set;

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

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

   817 	return pi;

   818 }

   820 struct razor_package_iterator *

   821 razor_package_iterator_create_for_property(struct razor_set *set,

   822 					   struct razor_property *property)

   823 {

   824 	struct list *index;

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

   827 	return razor_package_iterator_create_with_index(set, index);

   828 }

   830 int

   831 razor_package_iterator_next(struct razor_package_iterator *pi,

   832 			    struct razor_package **package,

   833 			    const char **name, const char **version)

   834 {

   835 	char *pool;

   836 	int valid;

   837 	struct razor_package *p, *packages;

   839 	if (pi->package) {

   840 		p = pi->package++;

   841 		valid = p < pi->end;

   842 	} else if (pi->index) {

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

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

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

   846 		valid = 1;

   847 	} else

   848 		valid = 0;

   850 	if (valid) {

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

   852 		*package = p;

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

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

   855 	} else {

   856 		*package = NULL;

   857 	}

   859 	return valid;

   860 }

   862 void

   863 razor_package_iterator_destroy(struct razor_package_iterator *pi)

   864 {

   865 	free(pi);

   866 }

   868 struct razor_package *

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

   870 {

   871 	struct razor_package_iterator *pi;

   872 	struct razor_package *p;

   873 	const char *name, *version;

   875 	pi = razor_package_iterator_create(set);

   876 	while (razor_package_iterator_next(pi, &p, &name, &version)) {

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

   878 			break;

   879 	}

   880 	razor_package_iterator_destroy(pi);

   882 	return p;

   883 }

   885 struct razor_property_iterator {

   886 	struct razor_set *set;

   887 	struct razor_property *property, *end;

   888 	struct list *index;

   889 };

   891 struct razor_property_iterator *

   892 razor_property_iterator_create(struct razor_set *set,

   893 			       struct razor_package *package)

   894 {

   895 	struct razor_property_iterator *pi;

   897 	pi = zalloc(sizeof *pi);

   898 	pi->set = set;

   900 	if (package) {

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

   902 				       &set->property_pool);

   903 	} else {

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

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

   906 	}

   908 	return pi;

   909 }

   911 int

   912 razor_property_iterator_next(struct razor_property_iterator *pi,

   913 			     struct razor_property **property,

   914 			     const char **name,

   915 			     enum razor_version_relation *relation,

   916 			     const char **version,

   917 			     enum razor_property_type *type)

   918 {

   919 	char *pool;

   920 	int valid;

   921 	struct razor_property *p, *properties;

   923 	if (pi->property) {

   924 		p = pi->property++;

   925 		valid = p < pi->end;

   926 	} else if (pi->index) {

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

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

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

   930 		valid = 1;

   931 	} else

   932 		valid = 0;

   934 	if (valid) {

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

   936 		*property = p;

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

   938 		*relation = p->relation;

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

   940 		*type = p->type;

   941 	} else {

   942 		*property = NULL;

   943 	}

   945 	return valid;

   946 }

   948 void

   949 razor_property_iterator_destroy(struct razor_property_iterator *pi)

   950 {

   951 	free(pi);

   952 }

   954 static struct razor_entry *

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

   956 {

   957 	struct razor_entry *e;

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

   959 	int len;

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

   962 	do {

   963 		n = pool + e->name;

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

   965 			return e;

   966 		len = strlen(n);

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

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

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

   970 		}

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

   973 	return NULL;

   974 }

   976 static void

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

   978 	 char *prefix, const char *pattern)

   979 {

   980 	struct razor_entry *e;

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

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

   984 	do {

   985 		n = pool + e->name;

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

   987 			continue;

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

   989 		if (e->start) {

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

   991 			*sub = '/';

   992 			strcpy (sub + 1, n);

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

   994 			*sub = '\0';

   995 		}

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

   997 }

   999 void

  1000 razor_set_list_files(struct razor_set *set, const char *pattern)

  1001 {

  1002 	struct razor_entry *e;

  1003 	char buffer[512], *p, *base;

  1005 	if (pattern == NULL || !strcmp (pattern, "/")) {

  1006 		buffer[0] = '\0';

  1007 		list_dir(set, set->files.data, buffer, NULL);

  1008 		return;

  1009 	}

  1011 	strcpy(buffer, pattern);

  1012 	e = find_entry(set, set->files.data, buffer);

  1013 	if (e && e->start > 0) {

  1014 		base = NULL;

  1015 	} else {

  1016 		p = strrchr(buffer, '/');

  1017 		if (p) {

  1018 			*p = '\0';

  1019 			base = p + 1;

  1020 		} else {

  1021 			base = NULL;

  1022 		}

  1023 	}

  1024 	e = find_entry(set, set->files.data, buffer);

  1025 	if (e->start != 0)

  1026 		list_dir(set, e, buffer, base);

  1027 }

  1029 struct razor_package_iterator *

  1030 razor_package_iterator_create_for_file(struct razor_set *set,

  1031 				       const char *filename)

  1032 {

  1033 	struct razor_entry *entry;

  1034 	struct list *index;

  1036 	entry = find_entry(set, set->files.data, filename);

  1037 	if (entry == NULL)

  1038 		return NULL;

  1040 	index = list_first(&entry->packages, &set->package_pool);

  1041 	return razor_package_iterator_create_with_index(set, index);

  1042 }

  1044 static struct list *

  1045 list_package_files(struct razor_set *set, struct list *r,

  1046 		   struct razor_entry *dir, uint32_t end,

  1047 		   char *prefix)

  1048 {

  1049 	struct razor_entry *e, *f, *entries;

  1050 	uint32_t next, file;

  1051 	char *pool;

  1052 	int len;

  1054 	entries = (struct razor_entry *) set->files.data;

  1055 	pool = set->string_pool.data;

  1057 	e = entries + dir->start;

  1058 	do {

  1059 		if (entries + r->data == e) {

  1060 			printf("%s/%s\n", prefix, pool + e->name);

  1061 			r = list_next(r);

  1062 			if (!r)

  1063 				return NULL;

  1064 			if (r->data >= end)

  1065 				return r;

  1066 		}

  1067 	} while (!((e++)->flags & RAZOR_ENTRY_LAST));

  1069 	e = entries + dir->start;

  1070 	do {

  1071 		if (e->start == 0)

  1072 			continue;

  1074 		if (e->flags & RAZOR_ENTRY_LAST)

  1075 			next = end;

  1076 		else {

  1077 			f = e + 1;

  1078 			while (f->start == 0 && !(f->flags & RAZOR_ENTRY_LAST))

  1079 				f++;

  1080 			if (f->start == 0)

  1081 				next = end;

  1082 			else

  1083 				next = f->start;

  1084 		}

  1086 		file = r->data;

  1087 		if (e->start <= file && file < next) {

  1088 			len = strlen(prefix);

  1089 			prefix[len] = '/';

  1090 			strcpy(prefix + len + 1, pool + e->name);

  1091 			r = list_package_files(set, r, e, next, prefix);

  1092 			prefix[len] = '\0';

  1093 		}

  1094 	} while (!((e++)->flags & RAZOR_ENTRY_LAST) && r != NULL);

  1096 	return r;

  1097 }

  1099 void

  1100 razor_set_list_package_files(struct razor_set *set, const char *name)

  1101 {

  1102 	struct razor_package *package;

  1103 	struct list *r;

  1104 	uint32_t end;

  1105 	char buffer[512];

  1107 	package = razor_set_get_package(set, name);

  1109 	r = list_first(&package->files, &set->file_pool);

  1110 	end = set->files.size / sizeof (struct razor_entry);

  1111 	buffer[0] = '\0';

  1112 	list_package_files(set, r, set->files.data, end, buffer);

  1113 }

  1115 static void

  1116 razor_set_validate(struct razor_set *set, struct array *unsatisfied)

  1117 {

  1118 	struct razor_property *r, *p, *end;

  1119 	uint32_t *u;

  1120 	char *pool;

  1122 	end = set->properties.data + set->properties.size;

  1123 	pool = set->string_pool.data;

  1125 	for (r = set->properties.data, p = r; r < end; r++) {

  1126 		if (r->type != RAZOR_PROPERTY_REQUIRES)

  1127 			continue;

  1129 		p = r;

  1130 		while (p < end && p->name == r->name &&

  1131 		       p->type == r->type)

  1132 			p++;

  1134 		/* If there is more than one version of a provides,

  1135 		 * seek to the end for the highest version. */

  1136 		/* FIXME: This doesn't work if we have a series of

  1137 		 * requires a = 1, provides a = 1, requires a = 2,

  1138 		 * provides a = 2, as the kernel and kernel-devel

  1139 		 * does.*/

  1140 		while (p + 1 < end && p->name == (p + 1)->name &&

  1141 		       p->type == (p + 1)->type)

  1142 			p++;

  1144 		/* FIXME: We need to track property flags (<, <=, =

  1145 		 * etc) to properly determine if a requires is

  1146 		 * satisfied.  The current code doesn't track that the

  1147 		 * requires a = 1 isn't satisfied by a = 2 provides. */

  1149 		if (p == end ||

  1150 		    p->type != RAZOR_PROPERTY_PROVIDES ||

  1151 		    r->name != p->name ||

  1152 		    versioncmp(&pool[r->version], &pool[p->version]) > 0) {

  1153 			/* FIXME: We ignore file requires for now. */

  1154 			if (pool[r->name] == '/')

  1155 				continue;

  1156 			u = array_add(unsatisfied, sizeof *u);

  1157 			*u = r - (struct razor_property *) set->properties.data;

  1158 		}

  1159 	}

  1160 }

  1162 void

  1163 razor_set_list_unsatisfied(struct razor_set *set)

  1164 {

  1165 	struct array unsatisfied;

  1166 	struct razor_property *properties, *r;

  1167 	uint32_t *u, *end;

  1168 	char *pool;

  1170 	array_init(&unsatisfied);

  1171 	razor_set_validate(set, &unsatisfied);

  1173 	end = unsatisfied.data + unsatisfied.size;

  1174 	properties = set->properties.data;

  1175 	pool = set->string_pool.data;

  1177 	for (u = unsatisfied.data; u < end; u++) {

  1178 		r = properties + *u;

  1179 		if (pool[r->version] == '\0')

  1180 			printf("%ss not satisfied\n",

  1181 			       &pool[r->name]);

  1182 		else

  1183 			printf("%s-%s not satisfied\n",

  1184 			       &pool[r->name],

  1185 			       &pool[r->version]);

  1186 	}

  1188 	array_release(&unsatisfied);

  1189 }

  1191 #define UPSTREAM_SOURCE 0x80

  1193 struct source {

  1194 	struct razor_set *set;

  1195 	uint32_t *property_map;

  1196 	uint32_t *file_map;

  1197 };

  1199 struct razor_merger {

  1200 	struct razor_set *set;

  1201 	struct hashtable table;

  1202 	struct source source1;

  1203 	struct source source2;

  1204 };

  1206 static struct razor_merger *

  1207 razor_merger_create(struct razor_set *set1, struct razor_set *set2)

  1208 {

  1209 	struct razor_merger *merger;

  1210 	int count;

  1211 	size_t size;

  1213 	merger = zalloc(sizeof *merger);

  1214 	merger->set = razor_set_create();

  1215 	hashtable_init(&merger->table, &merger->set->string_pool);

  1217 	merger->source1.set = set1;

  1218 	count = set1->properties.size / sizeof (struct razor_property);

  1219 	size = count * sizeof merger->source1.property_map[0];

  1220 	merger->source1.property_map = zalloc(size);

  1221 	count = set1->files.size / sizeof (struct razor_entry);

  1222 	size = count * sizeof merger->source1.file_map[0];

  1223 	merger->source1.file_map = zalloc(size);

  1225 	merger->source2.set = set2;

  1226 	count = set2->properties.size / sizeof (struct razor_property);

  1227 	size = count * sizeof merger->source2.property_map[0];

  1228 	merger->source2.property_map = zalloc(size);

  1229 	count = set2->files.size / sizeof (struct razor_entry);

  1230 	size = count * sizeof merger->source2.file_map[0];

  1231 	merger->source2.file_map = zalloc(size);

  1233 	return merger;

  1234 }

  1236 static void

  1237 add_package(struct razor_merger *merger,

  1238 	    struct razor_package *package, struct source *source,

  1239 	    uint32_t flags)

  1240 {

  1241 	char *pool;

  1242 	struct list *r;

  1243 	struct razor_package *p;

  1245 	pool = source->set->string_pool.data;

  1246 	p = array_add(&merger->set->packages, sizeof *p);

  1247 	p->name = hashtable_tokenize(&merger->table, &pool[package->name]);

  1248 	p->flags = flags;

  1249 	p->version = hashtable_tokenize(&merger->table,

  1250 					&pool[package->version]);

  1252 	p->properties = package->properties;

  1253 	r = list_first(&package->properties, &source->set->property_pool);

  1254 	while (r) {

  1255 		source->property_map[r->data] = 1;

  1256 		r = list_next(r);

  1257 	}

  1259 	p->files = package->files;

  1260 	r = list_first(&package->files, &source->set->file_pool);

  1261 	while (r) {

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

  1263 		r = list_next(r);

  1264 	}

  1265 }

  1267 static uint32_t

  1268 add_property(struct razor_merger *merger,

  1269 	     const char *name, enum razor_version_relation relation,

  1270 	     const char *version, int type)

  1271 {

  1272 	struct razor_property *p;

  1274 	p = array_add(&merger->set->properties, sizeof *p);

  1275 	p->name = hashtable_tokenize(&merger->table, name);

  1276 	p->flags = 0;

  1277 	p->type = type;

  1278 	p->relation = relation;

  1279 	p->version = hashtable_tokenize(&merger->table, version);

  1281 	return p - (struct razor_property *) merger->set->properties.data;

  1282 }

  1284 static void

  1285 merge_properties(struct razor_merger *merger)

  1286 {

  1287 	struct razor_property *p1, *p2;

  1288 	struct razor_set *set1, *set2;

  1289 	uint32_t *map1, *map2;

  1290 	int i, j, cmp, count1, count2;

  1291 	char *pool1, *pool2;

  1293 	set1 = merger->source1.set;

  1294 	set2 = merger->source2.set;

  1295 	map1 = merger->source1.property_map;

  1296 	map2 = merger->source2.property_map;

  1298 	i = 0;

  1299 	j = 0;

  1300 	pool1 = set1->string_pool.data;

  1301 	pool2 = set2->string_pool.data;

  1303 	count1 = set1->properties.size / sizeof *p1;

  1304 	count2 = set2->properties.size / sizeof *p2;

  1305 	while (i < count1 || j < count2) {

  1306 		if (i < count1 && map1[i] == 0) {

  1307 			i++;

  1308 			continue;

  1309 		}

  1310 		if (j < count2 && map2[j] == 0) {

  1311 			j++;

  1312 			continue;

  1313 		}

  1314 		p1 = (struct razor_property *) set1->properties.data + i;

  1315 		p2 = (struct razor_property *) set2->properties.data + j;

  1316 		if (i < count1 && j < count2)

  1317 			cmp = strcmp(&pool1[p1->name], &pool2[p2->name]);

  1318 		else if (i < count1)

  1319 			cmp = -1;

  1320 		else

  1321 			cmp = 1;

  1322 		if (cmp == 0)

  1323 			cmp = p1->type - p2->type;

  1324 		if (cmp == 0)

  1325 			cmp = p1->relation - p2->relation;

  1326 		if (cmp == 0)

  1327 			cmp = versioncmp(&pool1[p1->version],

  1328 					 &pool2[p2->version]);

  1329 		if (cmp < 0) {

  1330 			map1[i++] = add_property(merger,

  1331 						 &pool1[p1->name],

  1332 						 p1->relation,

  1333 						 &pool1[p1->version],

  1334 						 p1->type);

  1335 		} else if (cmp > 0) {

  1336 			map2[j++] = add_property(merger,

  1337 						 &pool2[p2->name],

  1338 						 p2->relation,

  1339 						 &pool2[p2->version],

  1340 						 p2->type);

  1341 		} else  {

  1342 			map1[i++] = map2[j++] = add_property(merger,

  1343 							     &pool1[p1->name],

  1344 							     p1->relation,

  1345 							     &pool1[p1->version],

  1346 							     p1->type);

  1347 		}

  1348 	}

  1349 }

  1351 static void

  1352 emit_properties(struct list_head *properties, struct array *source_pool,

  1353 		uint32_t *map, struct array *pool)

  1354 {

  1355 	uint32_t r;

  1356 	struct list *p, *q;

  1358 	r = pool->size / sizeof *q;

  1359 	p = list_first(properties, source_pool);

  1360 	while (p) {

  1361 		q = array_add(pool, sizeof *q);

  1362 		q->data = map[p->data];

  1363 		q->flags = p->flags;

  1364 		p = list_next(p);

  1365 	}

  1367 	list_set_ptr(properties, r);

  1368 }

  1370 static uint32_t

  1371 add_file(struct razor_merger *merger, const char *name)

  1372 {

  1373 	struct razor_entry *e;

  1375 	e = array_add(&merger->set->files, sizeof *e);

  1376 	e->name = hashtable_tokenize(&merger->table, name);

  1377 	e->flags = 0;

  1378 	e->start = 0;

  1380 	return e - (struct razor_entry *)merger->set->files.data;

  1381 }

  1383 /* FIXME. Blah */

  1384 static int

  1385 fix_file_map(uint32_t *map,

  1386 	     struct razor_entry *files,

  1387 	     struct razor_entry *top)

  1388 {

  1389 	uint32_t e;

  1390 	int found_file = 0;

  1392 	e = top->start;

  1393 	do {

  1394 		if (files[e].start)

  1395 			fix_file_map(map, files, &files[e]);

  1396 		if (map[e])

  1397 			found_file = 1;

  1398 	} while (!(files[e++].flags & RAZOR_ENTRY_LAST));

  1400 	if (found_file)

  1401 		map[top - files] = 1;

  1402 	return found_file;

  1403 }

  1405 struct merge_directory {

  1406 	uint32_t merged, dir1, dir2;

  1407 };

  1409 static void

  1410 merge_one_directory(struct razor_merger *merger, struct merge_directory *md)

  1411 {

  1412 	struct razor_entry *root1, *root2, *mroot, *e1, *e2;

  1413 	struct razor_set *set1, *set2;

  1414 	struct array merge_stack;

  1415 	struct merge_directory *child_md, *end_md;

  1416 	uint32_t *map1, *map2, start, last;

  1417 	int cmp;

  1418 	char *pool1, *pool2;

  1420 	set1 = merger->source1.set;

  1421 	set2 = merger->source2.set;

  1422 	map1 = merger->source1.file_map;

  1423 	map2 = merger->source2.file_map;

  1424 	pool1 = set1->string_pool.data;

  1425 	pool2 = set2->string_pool.data;

  1426 	root1 = (struct razor_entry *) set1->files.data;

  1427 	root2 = (struct razor_entry *) set2->files.data;

  1429 	array_init(&merge_stack);

  1431 	start = merger->set->files.size / sizeof (struct razor_entry);

  1432 	last = 0;

  1433 	e1 = md->dir1 ? root1 + md->dir1 : NULL;

  1434 	e2 = md->dir2 ? root2 + md->dir2 : NULL;

  1435 	while (e1 || e2) {

  1436 		if (!e2 && !map1[e1 - root1]) {

  1437 			if ((e1++)->flags & RAZOR_ENTRY_LAST)

  1438 				e1 = NULL;

  1439 			continue;

  1440 		}

  1441 		if (!e1 && !map2[e2 - root2]) {

  1442 			if ((e2++)->flags & RAZOR_ENTRY_LAST)

  1443 				e2 = NULL;

  1444 			continue;

  1445 		}

  1446 		if (e1 && !map1[e1 - root1] &&

  1447 		    e2 && !map1[e2 - root2]) {

  1448 			if ((e1++)->flags & RAZOR_ENTRY_LAST)

  1449 				e1 = NULL;

  1450 			if ((e2++)->flags & RAZOR_ENTRY_LAST)

  1451 				e2 = NULL;

  1452 			continue;

  1453 		}

  1455 		if (!e1)

  1456 			cmp = 1;

  1457 		else if (!e2)

  1458 			cmp = -1;

  1459 		else {

  1460 			cmp = strcmp (&pool1[e1->name],

  1461 				      &pool2[e2->name]);

  1462 		}

  1464 		if (cmp < 0) {

  1465 			if (map1[e1 - root1]) {

  1466 				map1[e1 - root1] = last =

  1467 					add_file(merger, &pool1[e1->name]);

  1468 				if (e1->start) {

  1469 					child_md = array_add(&merge_stack, sizeof (struct merge_directory));

  1470 					child_md->merged = last;

  1471 					child_md->dir1 = e1->start;

  1472 					child_md->dir2 = 0;

  1473 				}

  1474 			}

  1475 			if ((e1++)->flags & RAZOR_ENTRY_LAST)

  1476 				e1 = NULL;

  1477 		} else if (cmp > 0) {

  1478 			if (map2[e2 - root2]) {

  1479 				map2[e2 - root2] = last =

  1480 					add_file(merger, &pool2[e2->name]);

  1481 				if (e2->start) {

  1482 					child_md = array_add(&merge_stack, sizeof (struct merge_directory));

  1483 					child_md->merged = last;

  1484 					child_md->dir1 = 0;

  1485 					child_md->dir2 = e2->start;

  1486 				}

  1487 			}

  1488 			if ((e2++)->flags & RAZOR_ENTRY_LAST)

  1489 				e2 = NULL;

  1490 		} else {

  1491 			map1[e1 - root1] = map2[e2- root2] = last =

  1492 				add_file(merger, &pool1[e1->name]);

  1493 			if (e1->start || e2->start) {

  1494 				child_md = array_add(&merge_stack, sizeof (struct merge_directory));

  1495 				child_md->merged = last;

  1496 				child_md->dir1 = e1->start;

  1497 				child_md->dir2 = e2->start;

  1498 			}

  1499 			if ((e1++)->flags & RAZOR_ENTRY_LAST)

  1500 				e1 = NULL;

  1501 			if ((e2++)->flags & RAZOR_ENTRY_LAST)

  1502 				e2 = NULL;

  1503 		}

  1504 	}

  1506 	mroot = (struct razor_entry *)merger->set->files.data;

  1507 	if (last) {

  1508 		mroot[last].flags = RAZOR_ENTRY_LAST;

  1509 		mroot[md->merged].start = start;

  1510 	} else

  1511 		mroot[md->merged].start = 0;

  1513 	end_md = merge_stack.data + merge_stack.size;

  1514 	for (child_md = merge_stack.data; child_md < end_md; child_md++)

  1515 		merge_one_directory(merger, child_md);

  1516 	array_release(&merge_stack);

  1517 }

  1519 static void

  1520 merge_files(struct razor_merger *merger)

  1521 {

  1522 	struct razor_entry *root;

  1523 	struct merge_directory md;

  1524 	uint32_t *map1, *map2;

  1526 	map1 = merger->source1.file_map;

  1527 	map2 = merger->source2.file_map;

  1529 	md.merged = add_file(merger, "");

  1531 	if (merger->source1.set->files.size) {

  1532 		root = (struct razor_entry *) merger->source1.set->files.data;

  1533 		if (root->start)

  1534 			fix_file_map(map1, root, root);

  1535 		md.dir1 = root->start;

  1536 	} else

  1537 		md.dir1 = 0;

  1539 	if (merger->source2.set->files.size) {

  1540 		root = (struct razor_entry *) merger->source2.set->files.data;

  1541 		if (root->start)

  1542 			fix_file_map(map2, root, root);

  1543 		md.dir2 = root->start;

  1544 	} else

  1545 		md.dir2 = 0;

  1547 	merge_one_directory(merger, &md);

  1548 }

  1550 static void

  1551 emit_files(struct list_head *files, struct array *source_pool,

  1552 	   uint32_t *map, struct array *pool)

  1553 {

  1554 	uint32_t r;

  1555 	struct list *p, *q;

  1557 	r = pool->size / sizeof *q;

  1558 	p = list_first(files, source_pool);

  1559 	while (p) {

  1560 		q = array_add(pool, sizeof *q);

  1561 		q->data = map[p->data];

  1562 		q->flags = p->flags;

  1563 		p = list_next(p);

  1564 	}

  1566 	list_set_ptr(files, r);

  1567 }

  1569 /* Rebuild property->packages maps.  We can't just remap these, as a

  1570  * property may have lost or gained a number of packages.  Allocate an

  1571  * array per property and loop through the packages and add them to

  1572  * the arrays for their properties. */

  1573 static void

  1574 rebuild_property_package_lists(struct razor_set *set)

  1575 {

  1576 	struct array *pkgs, *a;

  1577 	struct razor_package *pkg, *pkg_end;

  1578 	struct razor_property *prop, *prop_end;

  1579 	struct list *r;

  1580 	uint32_t *q;

  1581 	int count;

  1583 	count = set->properties.size / sizeof (struct razor_property);

  1584 	pkgs = zalloc(count * sizeof *pkgs);

  1585 	pkg_end = set->packages.data + set->packages.size;

  1587 	for (pkg = set->packages.data; pkg < pkg_end; pkg++) {

  1588 		r = list_first(&pkg->properties, &set->property_pool);

  1589 		while (r) {

  1590 			q = array_add(&pkgs[r->data], sizeof *q);

  1591 			*q = pkg - (struct razor_package *) set->packages.data;

  1592 			r = list_next(r);

  1593 		}

  1594 	}

  1596 	prop_end = set->properties.data + set->properties.size;

  1597 	a = pkgs;

  1598 	for (prop = set->properties.data; prop < prop_end; prop++, a++) {

  1599 		list_set_array(&prop->packages, &set->package_pool, a, 0);

  1600 		array_release(a);

  1601 	}

  1602 	free(pkgs);

  1603 }

  1605 static void

  1606 rebuild_file_package_lists(struct razor_set *set)

  1607 {

  1608 	struct array *pkgs, *a;

  1609 	struct razor_package *pkg, *pkg_end;

  1610 	struct razor_entry *entry, *entry_end;

  1611 	struct list *r;

  1612 	uint32_t *q;

  1613 	int count;

  1615 	count = set->files.size / sizeof (struct razor_entry);

  1616 	pkgs = zalloc(count * sizeof *pkgs);

  1617 	pkg_end = set->packages.data + set->packages.size;

  1619 	for (pkg = set->packages.data; pkg < pkg_end; pkg++) {

  1620 		r = list_first(&pkg->files, &set->file_pool);

  1621 		while (r) {

  1622 			q = array_add(&pkgs[r->data], sizeof *q);

  1623 			*q = pkg - (struct razor_package *) set->packages.data;

  1624 			r = list_next(r);

  1625 		}

  1626 	}

  1628 	entry_end = set->files.data + set->files.size;

  1629 	a = pkgs;

  1630 	for (entry = set->files.data; entry < entry_end; entry++, a++) {

  1631 		list_set_array(&entry->packages, &set->package_pool, a, 0);

  1632 		array_release(a);

  1633 	}

  1634 	free(pkgs);

  1635 }

  1637 static struct razor_set *

  1638 razor_merger_finish(struct razor_merger *merger)

  1639 {

  1640 	struct razor_set *result;

  1641 	struct razor_package *p, *pend;

  1643 	/* As we built the package list, we filled out a bitvector of

  1644 	 * the properties that are referenced by the packages in the

  1645 	 * new set.  Now we do a parallel loop through the properties

  1646 	 * and emit those marked in the bit vector to the new set.  In

  1647 	 * the process, we update the bit vector to actually map from

  1648 	 * indices in the old property list to indices in the new

  1649 	 * property list for both sets. */

  1651 	merge_properties(merger);

  1652 	merge_files(merger);

  1654 	/* Now we loop through the packages again and emit the

  1655 	 * property lists, remapped to point to the new properties. */

  1657 	pend = merger->set->packages.data + merger->set->packages.size;

  1658 	for (p = merger->set->packages.data; p < pend; p++) {

  1659 		struct source *src;

  1661 		if (p->flags & UPSTREAM_SOURCE)

  1662 			src = &merger->source2;

  1663 		else

  1664 			src = &merger->source1;

  1666 		emit_properties(&p->properties,

  1667 				&src->set->property_pool,

  1668 				src->property_map,

  1669 				&merger->set->property_pool);

  1670 		emit_files(&p->files,

  1671 			   &src->set->file_pool,

  1672 			   src->file_map,

  1673 			   &merger->set->file_pool);

  1674 		p->flags &= ~UPSTREAM_SOURCE;

  1675 	}

  1677 	rebuild_property_package_lists(merger->set);

  1678 	rebuild_file_package_lists(merger->set);

  1680 	result = merger->set;

  1681 	hashtable_release(&merger->table);

  1682 	free(merger);

  1684 	return result;

  1685 }

  1687 /* The diff order matters.  We should sort the packages so that a

  1688  * REMOVE of a package comes before the INSTALL, and so that all

  1689  * requires for a package have been installed before the package.

  1690  **/

  1692 void

  1693 razor_set_diff(struct razor_set *set, struct razor_set *upstream,

  1694 	       razor_package_callback_t callback, void *data)

  1695 {

  1696 	struct razor_package_iterator *pi1, *pi2;

  1697 	struct razor_package *p1, *p2;

  1698 	const char *name1, *name2, *version1, *version2;

  1699 	int res;

  1701 	pi1 = razor_package_iterator_create(set);

  1702 	pi2 = razor_package_iterator_create(upstream);

  1704 	razor_package_iterator_next(pi1, &p1, &name1, &version1);

  1705 	razor_package_iterator_next(pi2, &p2, &name2, &version2);

  1707 	while (p1 || p2) {

  1708 		if (p1 && p2) {

  1709 			res = strcmp(name1, name2);

  1710 			if (res == 0)

  1711 				res = versioncmp(version1, version2);

  1712 		} else {

  1713 			res = 0;

  1714 		}

  1716 		if (p2 == NULL || res < 0)

  1717 			callback(name1, version1, NULL, data);

  1718 		else if (p1 == NULL || res > 0)

  1719 			callback(name2, NULL, version2, data);

  1721 		if (p1 != NULL && res <= 0)

  1722 			razor_package_iterator_next(pi1, &p1,

  1723 						    &name1, &version1);

  1724 		if (p2 != NULL && res >= 0)

  1725 			razor_package_iterator_next(pi2, &p2,

  1726 						    &name2, &version2);

  1727 	}

  1729 	razor_package_iterator_destroy(pi1);

  1730 	razor_package_iterator_destroy(pi2);

  1731 }

  1734 struct razor_transaction_resolver {

  1735 	struct razor_set *system, *upstream;

  1736 	struct bitarray syspkgs, uppkgs;

  1737 	struct array packages;

  1738 	int errors;

  1739 };

  1741 static int

  1742 package_in_set(void *package, struct razor_set *set)

  1743 {

  1744 	return package >= set->packages.data &&

  1745 		package < set->packages.data + set->packages.size;

  1746 }

  1748 static int

  1749 property_in_set(void *property, struct razor_set *set)

  1750 {

  1751 	return property >= set->properties.data &&

  1752 		property < set->properties.data + set->properties.size;

  1753 }

  1755 static int

  1756 compare_transaction_packages(const void *one, const void *two)

  1757 {

  1758 	const struct razor_transaction_package *tp1 = one;

  1759 	const struct razor_transaction_package *tp2 = two;

  1761 	return strcmp(tp1->name, tp2->name);

  1762 }

  1764 static void

  1765 find_packages(struct razor_transaction_resolver *trans,

  1766 	      int update_count, const char **update_packages,

  1767 	      int remove_count, const char **remove_packages)

  1768 {

  1769 	struct razor_package *sp, *spkgs, *up, *upkgs, *send, *uend;

  1770 	struct razor_transaction_package *packages, *tp;

  1771 	const char *spool, *upool;

  1772 	int i;

  1774 	spkgs = trans->system->packages.data;

  1775 	send = trans->system->packages.data + trans->system->packages.size;

  1776 	spool = trans->system->string_pool.data;

  1777 	upkgs = trans->upstream->packages.data;

  1778 	uend = trans->upstream->packages.data + trans->upstream->packages.size;

  1779 	upool = trans->upstream->string_pool.data;

  1781 	for (i = 0; i < update_count; i++) {

  1782 		tp = array_add(&trans->packages, sizeof *tp);

  1783 		memset(tp, 0, sizeof *tp);

  1784 		tp->name = update_packages[i];

  1785 		tp->state = RAZOR_PACKAGE_INSTALL;

  1786 	}

  1787 	for (i = 0; i < remove_count; i++) {

  1788 		tp = array_add(&trans->packages, sizeof *tp);

  1789 		memset(tp, 0, sizeof *tp);

  1790 		tp->name = remove_packages[i];

  1791 		tp->state = RAZOR_PACKAGE_REMOVE;

  1792 	}

  1793 	qsort(trans->packages.data, update_count + remove_count,

  1794 	      sizeof *tp, compare_transaction_packages);

  1795 	packages = trans->packages.data;

  1797 	sp = spkgs;

  1798 	up = upkgs;

  1799 	for (i = 0; i < update_count + remove_count; i++) {

  1800 		while (sp < send && strcmp(&spool[sp->name], packages[i].name) < 0)

  1801 			sp++;

  1802 		while (up < uend && strcmp(&upool[up->name], packages[i].name) < 0)

  1803 			up++;

  1805 		if (packages[i].state == RAZOR_PACKAGE_REMOVE) {

  1806 			if (sp < send && strcmp(packages[i].name, &spool[sp->name]) == 0) {

  1807 				packages[i].old_package = sp;

  1808 				packages[i].name = &spool[sp->name];

  1809 				packages[i].old_version = &spool[sp->version];

  1810 				bitarray_set(&trans->syspkgs, sp - spkgs, 0);

  1811 			} else {

  1812 				packages[i].name = strdup(packages[i].name);

  1813 				packages[i].state = RAZOR_PACKAGE_REMOVE_NOT_INSTALLED;

  1814 				trans->errors++;

  1815 			}

  1816 		} else {

  1817 			if (up < uend && strcmp(packages[i].name, &upool[up->name]) == 0) {

  1818 				packages[i].new_package = up;

  1819 				packages[i].name = &upool[up->name];

  1820 				packages[i].new_version = &upool[up->version];

  1821 				if (sp < send && strcmp(packages[i].name, &spool[sp->name]) == 0) {

  1822 					packages[i].old_package = sp;

  1823 					packages[i].old_version = &spool[sp->version];

  1824 					if (versioncmp(&spool[sp->version], &upool[up->version]) >= 0) {

  1825 						packages[i].state = RAZOR_PACKAGE_UP_TO_DATE;

  1826 						trans->errors++;

  1827 						continue;

  1828 					}

  1829 					bitarray_set(&trans->syspkgs, sp - spkgs, 0);

  1830 				}

  1831 				bitarray_set(&trans->uppkgs, up - upkgs, 1);

  1832 			} else {

  1833 				packages[i].name = strdup(packages[i].name);

  1834 				packages[i].state = RAZOR_PACKAGE_INSTALL_UNAVAILABLE;

  1835 				trans->errors++;

  1836 			}

  1837 		}

  1838 	}

  1839 }

  1841 static void

  1842 find_all_packages(struct razor_transaction_resolver *trans)

  1843 {

  1844 	struct razor_transaction_package *tp;

  1845 	struct razor_package *sp, *spkgs, *send, *up, *upkgs, *uend;

  1846 	const char *spool, *upool;

  1848 	spkgs = trans->system->packages.data;

  1849 	send = trans->system->packages.data + trans->system->packages.size;

  1850 	spool = trans->system->string_pool.data;

  1851 	up = upkgs = trans->upstream->packages.data;

  1852 	uend = trans->upstream->packages.data + trans->upstream->packages.size;

  1853 	upool = trans->upstream->string_pool.data;

  1855 	for (sp = spkgs; sp < send; sp++) {

  1856 		while (up < uend && strcmp(&spool[sp->name], &upool[up->name]) > 0)

  1857 			up++;

  1858 		if (strcmp(&spool[sp->name], &upool[up->name]) == 0) {

  1859 			tp = array_add(&trans->packages, sizeof *tp);

  1860 			memset(tp, 0, sizeof *tp);

  1861 			tp->old_package = sp;

  1862 			tp->new_package = up;

  1863 			tp->name = &upool[up->name];

  1864 			tp->old_version = &spool[sp->version];

  1865 			tp->new_version = &upool[up->version];

  1866 			tp->state = RAZOR_PACKAGE_INSTALL;

  1867 			bitarray_set(&trans->uppkgs, up - upkgs, 1);

  1868 			bitarray_set(&trans->syspkgs, sp - spkgs, 0);

  1869 		}

  1870 	}

  1871 }

  1873 static int

  1874 provider_satisfies_requirement(struct razor_property *provider,

  1875 			       const char *provider_strings,

  1876 			       struct razor_property *requirement,

  1877 			       const char *requirement_strings)

  1878 {

  1879 	int cmp, len;

  1880 	const char *provided = &provider_strings[provider->version];

  1881 	const char *required = &requirement_strings[requirement->version];

  1883 	if (!*required)

  1884 		return 1;

  1886 	cmp = versioncmp(provided, required);

  1888 	switch (requirement->relation) {

  1889 	case RAZOR_VERSION_LESS:

  1890 		return cmp < 0;

  1892 	case RAZOR_VERSION_LESS_OR_EQUAL:

  1893 		if (cmp <= 0)

  1894 			return 1;

  1895 		/* fall through: FIXME, make sure this is correct */

  1897 	case RAZOR_VERSION_EQUAL:

  1898 		if (cmp == 0)

  1899 			return 1;

  1901 		/* "foo == 1.1" is satisfied by "foo 1.1-2" */

  1902 		len = strlen(required);

  1903 		if (!strncmp(required, provided, len) && provided[len] == '-')

  1904 			return 1;

  1905 		return 0;

  1907 	case RAZOR_VERSION_GREATER_OR_EQUAL:

  1908 		return cmp >= 0;

  1910 	case RAZOR_VERSION_GREATER:

  1911 		return cmp > 0;

  1912 	}

  1914 	/* shouldn't happen */

  1915 	return 0;

  1916 }

  1918 static struct razor_package *

  1919 find_package_for_file(struct razor_set *set, struct bitarray *pkgbits,

  1920 		      const char *filename, int installed)

  1921 {

  1922 	struct razor_package *pkgs = set->packages.data;

  1923 	struct razor_entry *entry;

  1924 	struct list *p;

  1926 	if (filename[0] != '/')

  1927 		return 0;

  1929 	entry = find_entry(set, set->files.data, filename);

  1930 	if (!entry)

  1931 		return 0;

  1933 	for (p = list_first(&entry->packages, &set->package_pool); p; p = list_next(p)) {

  1934 		if (bitarray_get(pkgbits, p->data) == installed)

  1935 			return &pkgs[p->data];

  1936 	}

  1937 	return NULL;

  1938 }

  1940 static struct razor_package *

  1941 find_installed_package_for_file(struct razor_transaction_resolver *trans,

  1942 				const char *filename)

  1943 {

  1944 	struct razor_package *pkg;

  1946 	pkg = find_package_for_file(trans->system, &trans->syspkgs,

  1947 				    filename, 1);

  1948 	if (!pkg)

  1949 		pkg = find_package_for_file(trans->upstream, &trans->uppkgs,

  1950 					    filename, 1);

  1951 	return pkg;

  1952 }

  1954 static struct razor_package *

  1955 find_uninstalled_package_for_file(struct razor_transaction_resolver *trans,

  1956 				  const char *filename)

  1957 {

  1958 	struct razor_package *pkg;

  1960 	pkg = find_package_for_file(trans->upstream, &trans->uppkgs,

  1961 				    filename, 0);

  1962 	if (!pkg)

  1963 		pkg = find_package_for_file(trans->system, &trans->syspkgs,

  1964 					    filename, 0);

  1965 	return pkg;

  1966 }

  1968 static struct razor_property *

  1969 skip_to_matching_property(struct razor_transaction_resolver *trans,

  1970 			  struct razor_property *match,

  1971 			  struct razor_property *prop)

  1972 {

  1973 	struct razor_set *mset, *pset;

  1974 	const char *ppool, *mpool;

  1975 	struct razor_property *prop_end;

  1977 	if (property_in_set(match, trans->system))

  1978 		mset = trans->system;

  1979 	else

  1980 		mset = trans->upstream;

  1982 	if (property_in_set(prop, trans->system))

  1983 		pset = trans->system;

  1984 	else if (property_in_set(prop, trans->upstream))

  1985 		pset = trans->upstream;

  1986 	else

  1987 		return prop;

  1989 	prop_end = pset->properties.data + pset->properties.size;

  1990 	ppool = pset->string_pool.data;

  1991 	mpool = mset->string_pool.data;

  1993 	while (prop < prop_end &&

  1994 	       strcmp(&ppool[prop->name], &mpool[match->name]) < 0)

  1995 		prop++;

  1996 	return prop;

  1997 }

  1999 static struct razor_package *

  2000 find_package_matching(struct razor_transaction_resolver *trans, int installed,

  2001 		      struct razor_property *prop,

  2002 		      struct razor_property *req,

  2003 		      struct razor_set *req_set)

  2004 {

  2005 	struct razor_set *set;

  2006 	struct bitarray *pkgbits;

  2007 	struct razor_package *pkgs;

  2008 	struct razor_property *props, *prop_end;

  2009 	enum razor_property_type match_type;

  2010 	const char *pool;

  2011 	const char *rpool;

  2012 	int match_name = (req->type == RAZOR_PROPERTY_OBSOLETES);

  2013 	int match;

  2015 	if (property_in_set(prop, trans->system)) {

  2016 		set = trans->system;

  2017 		pkgbits = &trans->syspkgs;

  2018 	} else if (property_in_set(prop, trans->upstream)) {

  2019 		set = trans->upstream;

  2020 		pkgbits = &trans->uppkgs;

  2021 	} else

  2022 		return NULL;

  2024 	if (!req_set) {

  2025 		if (property_in_set(req, trans->system))

  2026 			req_set = trans->system;

  2027 		else

  2028 			req_set = trans->upstream;

  2029 	}

  2030 	rpool = req_set->string_pool.data;

  2032 	if (req->type == RAZOR_PROPERTY_PROVIDES)

  2033 		match_type = RAZOR_PROPERTY_CONFLICTS;

  2034 	else

  2035 		match_type = RAZOR_PROPERTY_PROVIDES;

  2037 	pkgs = set->packages.data;

  2038 	props = set->properties.data;

  2039 	prop_end = set->properties.data + set->properties.size;

  2040 	pool = set->string_pool.data;

  2042 	/* Find first matching property */

  2043 	while (prop < prop_end &&

  2044 	       strcmp(&pool[prop->name], &rpool[req->name]) < 0)

  2045 		prop++;

  2046 	if (prop == prop_end ||

  2047 	    strcmp(&pool[prop->name], &rpool[req->name]) > 0)

  2048 		return NULL;

  2050 	if (prop->type < match_type) {

  2051 		while (prop < prop_end && prop->type != match_type)

  2052 			prop++;

  2053 	} else {

  2054 		while (prop >= props && prop->type != match_type)

  2055 			prop--;

  2056 		while (prop > props + 1 && (prop - 1)->type == match_type)

  2057 			prop--;

  2058 	}

  2060 	/* Scan matching properties */

  2061 	while (prop < prop_end && prop->type == match_type &&

  2062 	       strcmp(&pool[prop->name], &rpool[req->name]) == 0) {

  2063 		if (match_type == RAZOR_PROPERTY_PROVIDES)

  2064 			match = provider_satisfies_requirement(prop, pool, req, rpool);

  2065 		else

  2066 			match = provider_satisfies_requirement(req, rpool, prop, pool);

  2067 		if (match) {

  2068 			struct list *pkg;

  2070 			for (pkg = list_first(&prop->packages, &set->package_pool); pkg; pkg = list_next(pkg)) {

  2071 				if (bitarray_get(pkgbits, pkg->data) != installed)

  2072 					continue;

  2073 				if (!match_name ||

  2074 				    strcmp(&pool[pkgs[pkg->data].name],

  2075 					   &rpool[req->name]) == 0)

  2076 					return &pkgs[pkg->data];

  2077 			}

  2078 		}

  2079 		prop++;

  2080 	}

  2082 	return NULL;

  2083 }

  2085 static struct razor_package *

  2086 find_installed_package_for_property(struct razor_transaction_resolver *trans,

  2087 				    struct razor_property *sys_start,

  2088 				    struct razor_property *up_start,

  2089 				    struct razor_property *req)

  2090 {

  2091 	struct razor_package *pkg;

  2093 	pkg = find_package_matching(trans, 1, sys_start, req, NULL);

  2094 	if (!pkg)

  2095 		pkg = find_package_matching(trans, 1, up_start, req, NULL);

  2096 	return pkg;

  2097 }

  2099 static struct razor_package *

  2100 find_uninstalled_package_for_property(struct razor_transaction_resolver *trans,

  2101 				      struct razor_property *sys_start,

  2102 				      struct razor_property *up_start,

  2103 				      struct razor_property *req)

  2104 {

  2105 	struct razor_package *pkg;

  2107 	pkg = find_package_matching(trans, 0, up_start, req, NULL);

  2108 	if (!pkg)

  2109 		pkg = find_package_matching(trans, 0, sys_start, req, NULL);

  2110 	return pkg;

  2111 }

  2113 /* FIXME */

  2114 static struct razor_package *

  2115 find_upgrade_for_installed_conflict(struct razor_transaction_resolver *trans,

  2116 				    struct razor_package *conflicting_pkg,

  2117 				    struct razor_property *prop)

  2118 {

  2119 	struct razor_package *upkgs, *up, *uend;

  2120 	struct razor_property *uprops;

  2121 	const char *spool, *upool;

  2122 	struct list *p;

  2124 	up = upkgs = trans->upstream->packages.data;

  2125 	uend = trans->upstream->packages.data + trans->upstream->packages.size;

  2126 	upool = trans->upstream->string_pool.data;

  2127 	uprops = trans->upstream->properties.data;

  2128 	spool = trans->system->string_pool.data;

  2130 	while (up < uend &&

  2131 	       strcmp(&upool[up->name], &spool[conflicting_pkg->name]) < 0)

  2132 		up++;

  2133 	if (up == uend || strcmp(&upool[up->name], &spool[conflicting_pkg->name]) != 0)

  2134 		return NULL;

  2136 	for (p = list_first(&up->properties, &trans->upstream->property_pool); p; p = list_next(p)) {

  2137 		if (prop->type == RAZOR_PROPERTY_PROVIDES &&

  2138 		    uprops[p->data].type == RAZOR_PROPERTY_CONFLICTS &&

  2139 		    provider_satisfies_requirement(prop, upool, &uprops[p->data], upool))

  2140 			return NULL;

  2141 		else if (prop->type == RAZOR_PROPERTY_CONFLICTS &&

  2142 			 uprops[p->data].type == RAZOR_PROPERTY_PROVIDES &&

  2143 			 provider_satisfies_requirement(&uprops[p->data], upool, prop, upool))

  2144 			return NULL;

  2145 	}

  2146 	return up;

  2147 }

  2149 /* FIXME */

  2150 static int

  2151 prop_is_being_installed(struct razor_transaction_resolver *trans,

  2152 			struct razor_property *prop)

  2153 {

  2154 	struct list *pkg;

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

  2157 		if (bitarray_get(&trans->uppkgs, pkg->data))

  2158 			return 1;

  2159 	}

  2160 	return 0;

  2161 }

  2163 static struct razor_transaction_package *

  2164 find_transaction_package(struct razor_transaction_resolver *trans,

  2165 			 const char *name)

  2166 {

  2167 	struct razor_transaction_package *packages;

  2168 	int count, i;

  2170 	packages = trans->packages.data;

  2171 	count = trans->packages.size / sizeof *packages;

  2172 	for (i = 0; i < count; i++) {

  2173 		if (packages[i].name && !strcmp(packages[i].name, name))

  2174 			return &packages[i];

  2175 	}

  2176 	return NULL;

  2177 }

  2179 static void

  2180 add_transaction_package(struct razor_transaction_resolver *trans,

  2181 			struct razor_package *new_package,

  2182 			struct razor_package *old_package,

  2183 			enum razor_transaction_package_state state,

  2184 			const char *req_package,

  2185 			struct razor_property *req_prop)

  2186 {

  2187 	struct razor_set *new_package_set, *old_package_set, *req_set;

  2188 	struct bitarray *newpkgbits, *oldpkgbits, *reqpkgbits;

  2189 	struct razor_transaction_package *tp, *already;

  2190 	const char *pool;

  2191 	struct razor_package *pkgs;

  2192 	struct list *pkg;

  2193 	int contradiction = 0;

  2195 	if (package_in_set(new_package, trans->system)) {

  2196 		new_package_set = trans->system;

  2197 		newpkgbits = &trans->syspkgs;

  2198 	} else {

  2199 		new_package_set = trans->upstream;

  2200 		newpkgbits = &trans->uppkgs;

  2201 	}

  2202 	if (package_in_set(old_package, trans->system)) {

  2203 		old_package_set = trans->system;

  2204 		oldpkgbits = &trans->syspkgs;

  2205 	} else {

  2206 		old_package_set = trans->upstream;

  2207 		oldpkgbits = &trans->uppkgs;

  2208 	}

  2209 	if (property_in_set(req_prop, trans->system)) {

  2210 		req_set = trans->system;

  2211 		reqpkgbits = &trans->syspkgs;

  2212 	} else {

  2213 		req_set = trans->upstream;

  2214 		reqpkgbits = &trans->uppkgs;

  2215 	}

  2217 	if (new_package) {

  2218 		pool = new_package_set->string_pool.data;

  2219 		already = find_transaction_package(trans, &pool[new_package->name]);

  2220 		if (already) {

  2221 			if (already->new_package == new_package) {

  2222 				/* Already taken care of */

  2223 				return;

  2224 			}

  2225 			/* Oops. We lose */

  2226 			if (state != RAZOR_PACKAGE_CONTRADICTION)

  2227 				contradiction = 1;

  2228 		}

  2229 	} else if (old_package) {

  2230 		pool = old_package_set->string_pool.data;

  2231 		already = find_transaction_package(trans, &pool[old_package->name]);

  2232 		if (already) {

  2233 			if (already->old_package == old_package) {

  2234 				/* Already taken care of */

  2235 				return;

  2236 			}

  2237 			/* Oops. We lose */

  2238 			if (state != RAZOR_PACKAGE_CONTRADICTION)

  2239 				contradiction = 1;

  2240 		}

  2241 	} else

  2242 		state = RAZOR_PACKAGE_UNSATISFIABLE;

  2244 	tp = array_add(&trans->packages, sizeof *tp);

  2245 	memset(tp, 0, sizeof *tp);

  2247 	if (new_package) {

  2248 		pool = new_package_set->string_pool.data;

  2249 		tp->new_package = new_package;

  2250 		tp->name = &pool[new_package->name];

  2251 		tp->new_version = &pool[new_package->version];

  2253 		pkgs = new_package_set->packages.data;

  2254 		bitarray_set(newpkgbits, new_package - pkgs, 1);

  2255 	}

  2256 	if (old_package) {

  2257 		pool = old_package_set->string_pool.data;

  2258 		tp->old_package = old_package;

  2259 		tp->name = &pool[old_package->name];

  2260 		tp->old_version = &pool[old_package->version];

  2262 		pkgs = old_package_set->packages.data;

  2263 		bitarray_set(oldpkgbits, old_package - pkgs, 0);

  2264 	}

  2266 	tp->state = state;

  2267 	if (state != RAZOR_PACKAGE_INSTALL &&

  2268 	    state != RAZOR_PACKAGE_FORCED_UPDATE &&

  2269 	    state != RAZOR_PACKAGE_REMOVE &&

  2270 	    state != RAZOR_PACKAGE_OBSOLETED)

  2271 		trans->errors++;

  2273 	if (contradiction) {

  2274 		/* Do this now, after adding tp, so that it ends up

  2275 		 * after both the INSTALL and the REMOVE in the array.

  2276 		 */

  2277 		add_transaction_package(trans, new_package, old_package,

  2278 					RAZOR_PACKAGE_CONTRADICTION,

  2279 					NULL, NULL);

  2280 	}

  2282 	if (req_package)

  2283 		tp->dep_package = req_package;

  2284 	if (!req_prop)

  2285 		return;

  2287 	pool = req_set->string_pool.data;

  2288 	pkgs = req_set->packages.data;

  2289 	if (!req_package) {

  2290 		for (pkg = list_first(&req_prop->packages, &req_set->package_pool); pkg; pkg = list_next(pkg)) {

  2291 			if (bitarray_get(reqpkgbits, pkg->data))

  2292 				break;

  2293 		}

  2294 		if (pkg)

  2295 			tp->dep_package = &pool[pkgs[pkg->data].name];

  2296 	}

  2298 	tp->dep_type = req_prop->type;

  2299 	tp->dep_property = &pool[req_prop->name];

  2300 	tp->dep_relation = req_prop->relation;

  2301 	tp->dep_version = &pool[req_prop->version];

  2302 }

  2304 /* FIXME: make this more efficient */

  2305 static struct razor_package *

  2306 find_old_version(struct razor_transaction_resolver *trans,

  2307 		 struct razor_package *pkg)

  2308 {

  2309 	struct razor_package *spkgs, *sp, *send;

  2310 	const char *spool, *upool;

  2312 	if (!package_in_set(pkg, trans->upstream))

  2313 		return NULL;

  2315 	sp = spkgs = trans->system->packages.data;

  2316 	send = trans->system->packages.data + trans->system->packages.size;

  2317 	spool = trans->system->string_pool.data;

  2318 	upool = trans->upstream->string_pool.data;

  2320 	while (sp < send &&

  2321 	       strcmp(&spool[sp->name], &upool[pkg->name]) < 0)

  2322 		sp++;

  2323 	if (sp < send && strcmp(&spool[sp->name], &upool[pkg->name]) == 0)

  2324 		return sp;

  2325 	return NULL;

  2326 }

  2328 static void

  2329 razor_transaction_satisfy_installs(struct razor_transaction_resolver *trans)

  2330 {

  2331 	struct razor_package *spkgs, *upkgs, *pkg, *upgrade;

  2332 	struct razor_property *sp, *sprops, *sprop_end;

  2333 	struct razor_property *up, *uprops, *uprop_end;

  2334 	const char *spool, *upool;

  2336 	spkgs = trans->system->packages.data;

  2337 	sprops = trans->system->properties.data;

  2338 	sprop_end = trans->system->properties.data + trans->system->properties.size;

  2339 	spool = trans->system->string_pool.data;

  2340 	upkgs = trans->upstream->packages.data;

  2341 	uprops = trans->upstream->properties.data;

  2342 	uprop_end = trans->upstream->properties.data + trans->upstream->properties.size;

  2343 	upool = trans->upstream->string_pool.data;

  2345 	sp = sprops;

  2346 	up = uprops;

  2347 	while (up < uprop_end) {

  2348 		/* Skip 'up' ahead to a property of a package which is

  2349 		 * to-be-installed.

  2350 		 */

  2351 		while (up < uprop_end &&

  2352 		       !prop_is_being_installed(trans, up))

  2353 			up++;

  2354 		if (up == uprop_end)

  2355 			break;

  2356 		sp = skip_to_matching_property(trans, up, sp);

  2358 		switch (up->type) {

  2359 		case RAZOR_PROPERTY_REQUIRES:

  2360 			if (!strncmp(&upool[up->name], "rpmlib(", 7))

  2361 				break;

  2363 			if (find_installed_package_for_property(trans, sp, up, up) ||

  2364 			    find_installed_package_for_file(trans, &upool[up->name])) {

  2365 				/* Requires something that is either installed

  2366 				 * or to-be-installed.

  2367 				 */

  2368 				break;

  2369 			}

  2371 			/* See if we can install a new upstream provider */

  2372 			pkg = find_uninstalled_package_for_property(trans, sp, up, up);

  2373 			if (!pkg)

  2374 				pkg = find_uninstalled_package_for_file(trans, &upool[up->name]);

  2375 			add_transaction_package(trans, pkg, find_old_version(trans, pkg),

  2376 						RAZOR_PACKAGE_INSTALL,

  2377 						NULL, up);

  2378 			break;

  2380 		case RAZOR_PROPERTY_PROVIDES:

  2381 			/* find_installed_package_for_property works backwards

  2382 			 * here, finding a *conflicting* installed package.

  2383 			 */

  2384 			pkg = find_installed_package_for_property(trans, sp, up, up);

  2385 			if (!pkg)

  2386 				break;

  2388 			if (package_in_set(pkg, trans->system)) {

  2389 				/* pkg CONFLICTS with what 'up' PROVIDES. Try

  2390 				 * finding an upgrade

  2391 				 */

  2392 				upgrade = find_upgrade_for_installed_conflict(trans, pkg, up);

  2393 				if (upgrade) {

  2394 					add_transaction_package(trans, upgrade, pkg,

  2395 								RAZOR_PACKAGE_INSTALL,

  2396 								&spool[pkg->name], sp);

  2397 				}

  2398 				break;

  2399 			}

  2401 			add_transaction_package(trans, NULL, pkg,

  2402 						RAZOR_PACKAGE_OLD_CONFLICT,

  2403 						NULL, up);

  2404 			break;

  2406 		case RAZOR_PROPERTY_CONFLICTS:

  2407 			pkg = find_installed_package_for_property(trans, sp, up, up);

  2408 			if (!pkg)

  2409 				break;

  2411 			if (package_in_set(pkg, trans->system)) {

  2412 				/* Conflicts with something already installed.

  2413 				 * Try to upgrade out.

  2414 				 */

  2415 				upgrade = find_upgrade_for_installed_conflict(trans, pkg, up);

  2416 				if (upgrade) {

  2417 					add_transaction_package(trans, upgrade, pkg,

  2418 								RAZOR_PACKAGE_INSTALL,

  2419 								NULL, up);

  2420 					break;

  2421 				}

  2422 			}

  2424 			add_transaction_package(trans, pkg, NULL,

  2425 						RAZOR_PACKAGE_NEW_CONFLICT,

  2426 						NULL, up);

  2427 			break;

  2429 		case RAZOR_PROPERTY_OBSOLETES:

  2430 			pkg = find_installed_package_for_property(trans, sp, up, up);

  2431 			if (pkg) {

  2432 				/* If pkg is to-be-installed, this

  2433 				 * will add a CONTRADICTION error as well.

  2434 				 */

  2435 				add_transaction_package(trans, NULL, pkg,

  2436 							RAZOR_PACKAGE_OBSOLETED,

  2437 							NULL, up);

  2438 			}

  2439 			break;

  2441 		default:

  2442 			/* can't happen */

  2443 			break;

  2444 		}

  2445 		up++;

  2446 	}

  2447 }

  2449 #if 0

  2450 /* Look through pkg's PROVIDES, and for each one that no other package

  2451  * provides, add its property index to lost_provides.

  2452  */

  2453 static void

  2454 gather_lost_provides(struct razor_set *set, struct razor_package *pkg,

  2455 		     struct array *lost_provides)

  2456 {

  2457 	struct razor_property *props = set->properties.data, *prop;

  2458 	struct list *p, *providers;

  2459 	uint32_t *lost;

  2461 	for (p = list_first(&pkg->properties, &set->property_pool); p; p = list_next(p)) {

  2462 		prop = &props[p->data];

  2463 		if (prop->type != RAZOR_PROPERTY_PROVIDES)

  2464 			continue;

  2466 		providers = list_first(&prop->packages, &set->package_pool);

  2467 		if (providers && !list_next(providers)) {

  2468 			lost = array_add(lost_provides, sizeof *lost);

  2469 			*lost = p->data;

  2470 		}

  2471 	}

  2472 }

  2474 static void

  2475 gather_lost_files(struct razor_set *set, struct razor_package *pkg,

  2476 		  struct array *lost_files)

  2477 {

  2478 	struct razor_entry *entries = set->files.data, *entry, **lost;

  2479 	struct list *e, *providers;

  2481 	for (e = list_first(&pkg->files, &set->file_pool); e; e = list_next(e)) {

  2482 		entry = &entries[e->data];

  2483 		providers = list_first(&entry->packages, &set->package_pool);

  2484 		if (providers && !list_next(providers)) {

  2485 			lost = array_add(lost_files, sizeof *lost);

  2486 			*lost = entry;

  2487 		}

  2488 	}

  2489 }

  2491 static void

  2492 lose_required_package(struct razor_transaction_resolver *trans,

  2493 		      struct razor_property *req,

  2494 		      struct list_head *lost_package_list)

  2495 {

  2496 	struct razor_package *pkgs, *lost_package;

  2497 	char *pool = trans->system->string_pool.data;

  2498 	struct list *p;

  2500 	pkgs = trans->system->packages.data;

  2501 	lost_package = &pkgs[list_first(lost_package_list, &trans->system->package_pool)->data];

  2503 	for (p = list_first(&req->packages, &trans->system->package_pool); p; p = list_next(p)) {

  2504 		add_transaction_package(trans, NULL, &pkgs[p->data],

  2505 					RAZOR_PACKAGE_REMOVE,

  2506 					&pool[lost_package->name], req);

  2507 	}

  2508 }

  2510 static void

  2511 lose_requirement(struct razor_transaction_resolver *trans,

  2512 		 struct razor_property *req,

  2513 		 struct razor_property *lost_provider,

  2514 		 struct razor_property *first_provider)

  2515 {

  2516 	struct razor_property *provider, *prop_end;

  2517 	char *pool = trans->system->string_pool.data;

  2519 	prop_end = trans->system->properties.data + trans->system->properties.size;

  2521 	/* See if any other provider satisfies req */

  2522 	for (provider = first_provider;

  2523 	     provider < prop_end && provider->type == RAZOR_PROPERTY_PROVIDES && provider->name == lost_provider->name;

  2524 	     provider++) {

  2525 		if (provider == lost_provider)

  2526 			continue;

  2528 		if (provider_satisfies_requirement(provider, pool, req, pool))

  2529 			return;

  2530 	}

  2532 	lose_required_package(trans, req, &lost_provider->packages);

  2533 }

  2535 static void

  2536 razor_transaction_satisfy_removes(struct razor_transaction_resolver *trans,

  2537 				  int start, int end)

  2538 {

  2539 	struct razor_transaction_package *packages;

  2540 	struct razor_package *pkgs;

  2541 	int pkg_count, r;

  2542 	uint32_t *lost, *lost_end;

  2543 	struct razor_entry *entry, **lostf, **lostf_end;

  2544 	struct razor_property *props, *prop_end, *req, *first_provider;

  2545 	struct array lost_provides, lost_files;

  2546 	char *pool;

  2548 	pkgs = trans->system->packages.data;

  2549 	pkg_count = trans->system->packages.size / sizeof (struct razor_package);

  2550 	props = trans->system->properties.data;

  2551 	prop_end = trans->system->properties.data + trans->system->properties.size;

  2552 	pool = trans->system->string_pool.data;

  2553 	packages = trans->packages.data;

  2555 	array_init(&lost_files);

  2556 	array_init(&lost_provides);

  2557 	for (r = start; r < end; r++) {

  2558 		if (!packages[r].old_package ||

  2559 		    (packages[r].state != RAZOR_PACKAGE_REMOVE &&

  2560 		     packages[r].state != RAZOR_PACKAGE_INSTALL &&

  2561 		     packages[r].state != RAZOR_PACKAGE_FORCED_UPDATE &&

  2562 		     packages[r].state != RAZOR_PACKAGE_OBSOLETED)

  2563 			continue;

  2565 		gather_lost_provides(trans->system, packages[r].old_package,

  2566 				     &lost_provides);

  2567 		gather_lost_files(trans->system, packages[r].old_package,

  2568 				  &lost_files);

  2569 	}

  2571 	/* Handle lost_provides */

  2572 	lost_end = lost_provides.data + lost_provides.size;

  2573 	for (lost = lost_provides.data; lost < lost_end; lost++) {

  2574 		/* Requires FOO will appear before Provides FOO */

  2575 		for (req = &props[*lost]; req > props && req->name == props[*lost].name && req->type != RAZOR_PROPERTY_REQUIRES; req--)

  2576 			;

  2577 		first_provider = req + 1;

  2579 		while (req > props && req->name == props[*lost].name) {

  2580 			lose_requirement(trans, req, &props[*lost],

  2581 					 first_provider);

  2582 			req--;

  2583 		}

  2584 	}

  2585 	array_release(&lost_provides);

  2587 	/* And now lost_files. FIXME, inefficient */

  2588 	lostf_end = lost_files.data + lost_files.size;

  2590 	req = props;

  2591 	/* Due to the sorting of props, this loop is likely a no-op */

  2592 	while (req < prop_end && pool[req->name] != '/')

  2593 		req++;

  2595 	for (; req < prop_end && pool[req->name] == '/'; req++) {

  2596 		if (req->type != RAZOR_PROPERTY_REQUIRES)

  2597 			continue;

  2599 		entry = find_entry(trans->system, trans->system->files.data,

  2600 				   &pool[req->name]);

  2601 		if (!entry)

  2602 			continue;

  2604 		for (lostf = lost_files.data; lostf < lostf_end; lostf++) {

  2605 			if (*lostf == entry)

  2606 				break;

  2607 		}

  2608 		if (lostf == lostf_end)

  2609 			continue;

  2611 		lose_required_package(trans, req, &entry->packages);

  2612 	}

  2613 	array_release(&lost_files);

  2614 }

  2615 #endif

  2617 static struct razor_package *

  2618 find_upgrade_for_lost_requirement(struct razor_transaction_resolver *trans,

  2619 				  struct razor_package *pkg,

  2620 				  struct razor_property *req)

  2621 {

  2622 	struct razor_package *upkgs, *up, *uend;

  2623 	struct razor_property *uprops;

  2624 	const char *spool, *upool;

  2625 	struct list *prop;

  2627 	up = upkgs = trans->upstream->packages.data;

  2628 	uend = trans->upstream->packages.data + trans->upstream->packages.size;

  2629 	upool = trans->upstream->string_pool.data;

  2630 	uprops = trans->upstream->properties.data;

  2631 	spool = trans->system->string_pool.data;

  2633 	while (up < uend &&

  2634 	       strcmp(&upool[up->name], &spool[pkg->name]) < 0)

  2635 		up++;

  2636 	if (up == uend || strcmp(&upool[up->name], &spool[pkg->name]) != 0)

  2637 		return NULL;

  2639 	for (prop = list_first(&up->properties, &trans->system->property_pool); prop; prop = list_next(prop)) {

  2640 		if (uprops[prop->data].type == RAZOR_PROPERTY_REQUIRES &&

  2641 		    strcmp(&upool[uprops[prop->data].name], &spool[req->name]) == 0 &&

  2642 		    uprops[prop->data].relation == req->relation &&

  2643 		    strcmp(&upool[uprops[prop->data].version], &spool[req->version]) == 0)

  2644 			return NULL;

  2645 	}

  2646 	return up;

  2647 }

  2649 static int

  2650 prop_is_being_removed(struct razor_transaction_resolver *trans,

  2651 		      struct razor_property *prop)

  2652 {

  2653 	struct list *pkg;

  2655 	for (pkg = list_first(&prop->packages, &trans->system->package_pool); pkg; pkg = list_next(pkg)) {

  2656 		if (bitarray_get(&trans->syspkgs, pkg->data))

  2657 			return 0;

  2658 	}

  2659 	return 1;

  2660 }

  2662 static int

  2663 prop_is_being_updated(struct razor_transaction_resolver *trans,

  2664 		      struct razor_property *prop)

  2665 {

  2666 	struct razor_package *packages = trans->system->packages.data;

  2667 	const char *pool = trans->system->string_pool.data;

  2668 	struct razor_transaction_package *tp;

  2669 	struct list *pkg;

  2671 	/* Assumes prop_is_being_removed returns true */

  2673 	for (pkg = list_first(&prop->packages, &trans->system->package_pool); pkg; pkg = list_next(pkg)) {

  2674 		tp = find_transaction_package(trans, &pool[packages[pkg->data].name]);

  2675 		if (tp && tp->state == RAZOR_PACKAGE_REMOVE)

  2676 			return 0;

  2677 	}

  2678 	return 1;

  2679 }

  2681 static void

  2682 razor_transaction_satisfy_removes(struct razor_transaction_resolver *trans)

  2683 {

  2684 	struct razor_package *spkgs, *upkgs, *pkg, *upgrade;

  2685 	struct razor_property *sp, *sprops, *sprop_end, *sr;

  2686 	struct razor_property *up, *uprops, *uprop_end, *ur, *first_up;

  2687 	const char *spool, *upool, *removed_package;

  2688 	struct list *reqpkg;

  2690 	spkgs = trans->system->packages.data;

  2691 	sprops = trans->system->properties.data;

  2692 	sprop_end = trans->system->properties.data + trans->system->properties.size;

  2693 	spool = trans->system->string_pool.data;

  2694 	upkgs = trans->upstream->packages.data;

  2695 	uprops = trans->upstream->properties.data;

  2696 	uprop_end = trans->upstream->properties.data + trans->upstream->properties.size;

  2697 	upool = trans->upstream->string_pool.data;

  2699 	up = uprops;

  2700 	for (sp = sprops; sp < sprop_end; sp++) {

  2701 		/* Skip 'sp' ahead to a PROVIDES of a package which is

  2702 		 * to-be-removed.

  2703 		 */

  2704 		while (sp < sprop_end &&

  2705 		       (sp->type != RAZOR_PROPERTY_PROVIDES ||

  2706 			!prop_is_being_removed(trans, sp)))

  2707 			sp++;

  2708 		if (sp == sprop_end)

  2709 			break;

  2711 		removed_package = &spool[spkgs[list_first(&sp->packages, &trans->system->package_pool)->data].name];

  2713 		/* Skip 'up' to match */

  2714 		up = skip_to_matching_property(trans, sp, up);

  2715 		ur = first_up = up;

  2717 		/* If the package is just being upgraded, we may

  2718 		 * already be installing an identical PROVIDES, so

  2719 		 * check for that.

  2720 		 */

  2721 		while (up < uprop_end &&

  2722 		       strcmp(&spool[sp->name], &upool[up->name]) == 0 &&

  2723 		       (up->type != RAZOR_PROPERTY_PROVIDES ||

  2724 			sp->relation != up->relation ||

  2725 			strcmp(&spool[sp->name], &upool[up->name]) != 0))

  2726 			up++;

  2727 		if (up < uprop_end &&

  2728 		    up->type == RAZOR_PROPERTY_PROVIDES &&

  2729 		    strcmp(&spool[sp->name], &upool[up->name]) == 0 &&

  2730 		    sp->relation == up->relation &&

  2731 		    strcmp(&spool[sp->version], &upool[up->version]) == 0 &&

  2732 		    prop_is_being_installed(trans, up)) {

  2733 			up = first_up;

  2734 			continue;

  2735 		}

  2736 		up = first_up;

  2738 		/* For all still-installed packages that require

  2739 		 * sp->name, see if they are satisfied by any other

  2740 		 * still-installed or to-be-installed property. If

  2741 		 * not, either remove or attempt to update the

  2742 		 * package, depending on why the required property has

  2743 		 * disappeared

  2744 		 */

  2745 		sr = sp;

  2746 		while (sr > sprops + 1 && (sr - 1)->name == sr->name)

  2747 			sr--;

  2748 		for (; sr->type == RAZOR_PROPERTY_REQUIRES; sr++) {

  2749 			if (prop_is_being_removed(trans, sr))

  2750 				continue;

  2751 			if (find_installed_package_for_property(trans, sp, up, sr))

  2752 				continue;

  2754 			for (reqpkg = list_first(&sr->packages, &trans->system->package_pool); reqpkg; reqpkg = list_next(reqpkg)) {

  2755 				if (!bitarray_get(&trans->syspkgs, reqpkg->data))

  2756 					continue;

  2757 				pkg = &spkgs[reqpkg->data];

  2758 				if (prop_is_being_updated(trans, sp)) {

  2759 					upgrade = find_upgrade_for_lost_requirement(trans, pkg, sr);

  2760 					if (upgrade) {

  2761 						add_transaction_package(trans, upgrade, pkg,

  2762 									RAZOR_PACKAGE_FORCED_UPDATE,

  2763 									removed_package, NULL);

  2764 					} else {

  2765 						/* This will cause a CONTRADICTION */

  2766 						add_transaction_package(trans, pkg, NULL,

  2767 									RAZOR_PACKAGE_INSTALL,

  2768 									removed_package, sr);

  2769 					}

  2770 				} else {

  2771 					add_transaction_package(trans, NULL, pkg,

  2772 								RAZOR_PACKAGE_REMOVE,

  2773 								removed_package, sr);

  2774 				}

  2775 			}

  2776 		}

  2777 	}

  2778 }

  2780 struct razor_transaction *

  2781 razor_transaction_create(struct razor_set *system, struct razor_set *upstream,

  2782 			 int update_count, const char **update_packages,

  2783 			 int remove_count, const char **remove_packages)

  2784 {

  2785 	struct razor_transaction_resolver trans;

  2786 	struct razor_transaction *ret_trans;

  2787 	int start, end;

  2789 	trans.system = system;

  2790 	trans.upstream = upstream ? upstream : razor_set_create();

  2791 	array_init(&trans.packages);

  2792 	bitarray_init(&trans.syspkgs, trans.system->packages.size / sizeof (struct razor_package), 1);

  2793 	bitarray_init(&trans.uppkgs, trans.upstream->packages.size / sizeof (struct razor_package), 0);

  2794 	trans.errors = 0;

  2796 	if (update_count > 0 || remove_count > 0) {

  2797 		find_packages(&trans,

  2798 			      update_count, update_packages,

  2799 			      remove_count, remove_packages);

  2800 	} else

  2801 		find_all_packages(&trans);

  2803 	start = 0;

  2804 	end = trans.packages.size / sizeof (struct razor_transaction_package);

  2806 	while (!trans.errors && start != end) {

  2807 		razor_transaction_satisfy_installs(&trans);

  2808 		razor_transaction_satisfy_removes(&trans);

  2810 		start = end;

  2811 		end = trans.packages.size / sizeof (struct razor_transaction_package);

  2812 	}

  2814 	ret_trans = zalloc(sizeof *ret_trans);

  2815 	ret_trans->system = trans.system;

  2816 	ret_trans->upstream = trans.upstream;

  2817 	ret_trans->packages = trans.packages.data;

  2818 	ret_trans->package_count = end;

  2819 	ret_trans->errors = trans.errors;

  2820 	return ret_trans;

  2821 }

  2823 const char * const razor_version_relations[] = {

  2824 	/* same order as enum razor_version_relation */

  2825 	"<", "<=", "=", ">=", ">"

  2826 };

  2828 const char * const razor_property_types[] = {

  2829 	/* same order as enum razor_property_type */

  2830 	"requires", "provides", "conflicts with", "obsoletes"

  2831 };

  2833 void

  2834 razor_transaction_describe(struct razor_transaction *trans)

  2835 {

  2836 	struct razor_transaction_package *p, *pend, *tps;

  2837 	int errors_only = 0;

  2839 	tps = trans->packages;

  2840 	pend = trans->packages + trans->package_count;

  2841 	for (p = trans->packages; p < pend; p++) {

  2842 		switch (p->state) {

  2843 		case RAZOR_PACKAGE_INSTALL:

  2844 			if (errors_only)

  2845 				break;

  2847 			printf("Installing %s %s", p->name, p->new_version);

  2848 			if (p->dep_package) {

  2849 				if (p->dep_type == RAZOR_PROPERTY_CONFLICTS &&

  2850 				    !strcmp(p->dep_package, p->name)) {

  2851 					printf(" because %s %s conflicts with %s",

  2852 					       p->name, p->old_version, p->dep_property);

  2853 					if (*p->dep_version) {

  2854 						printf(" %s %s",

  2855 						       razor_version_relations[p->dep_relation],

  2856 						       p->dep_version);

  2857 					}

  2858 				} else {

  2859 					printf(" for %s", p->dep_package);

  2860 					if (*p->dep_version) {

  2861 						printf(", which %s %s %s %s",

  2862 						       razor_property_types[p->dep_type],

  2863 						       p->dep_property,

  2864 						       razor_version_relations[p->dep_relation],

  2865 						       p->dep_version);

  2866 					} else if (strcmp(p->dep_property, p->name) != 0) {

  2867 						printf(", which %s %s",

  2868 						       razor_property_types[p->dep_type],

  2869 						       p->dep_property);

  2870 					}

  2871 				}

  2872 			}

  2873 			printf("\n");

  2874 			break;

  2876 		case RAZOR_PACKAGE_FORCED_UPDATE:

  2877 			if (errors_only)

  2878 				break;

  2880 			printf("Updating %s to %s due to update of %s\n",

  2881 			       p->name, p->new_version, p->dep_package);

  2882 			break;

  2884 		case RAZOR_PACKAGE_REMOVE:

  2885 			if (errors_only)

  2886 				break;

  2887 			printf("Removing %s %s", p->name, p->old_version);

  2888 			if (p->dep_package) {

  2889 				printf(" which required %s",

  2890 				       p->dep_package);

  2891 				if (strcmp(p->dep_property, p->name) != 0)

  2892 					printf(" for %s", p->dep_property);

  2893 			}

  2894 			printf("\n");

  2895 			break;

  2897 		case RAZOR_PACKAGE_OBSOLETED:

  2898 			if (errors_only)

  2899 				break;

  2900 			printf("Removing %s %s", p->name, p->old_version);

  2901 			if (p->dep_package) {

  2902 				printf(" which is obsoleted by %s",

  2903 				       p->dep_package);

  2904 			}

  2905 			printf("\n");

  2906 			break;

  2908 		case RAZOR_PACKAGE_INSTALL_UNAVAILABLE:

  2909 			printf("Error: can't install %s: not found\n", p->name);

  2910 			errors_only = 1;

  2911 			break;

  2913 		case RAZOR_PACKAGE_REMOVE_NOT_INSTALLED:

  2914 			printf("Error: can't remove %s: not installed\n", p->name);

  2915 			errors_only = 1;

  2916 			break;

  2918 		case RAZOR_PACKAGE_UP_TO_DATE:

  2919 			printf("Error: can't upgrade %s: %s is most recent version\n", p->name, p->old_version);

  2920 			errors_only = 1;

  2921 			break;

  2923 		case RAZOR_PACKAGE_CONTRADICTION:

  2924 			printf("Error: package %s is marked for both installation and removal\n", p->name);

  2925 			errors_only = 1;

  2926 			break;

  2928 		case RAZOR_PACKAGE_OLD_CONFLICT:

  2929 			printf("Error: can't install %s, because installed package %s conflicts with ",

  2930 			       p->name, p->dep_package);

  2931 			if (*p->dep_version) {

  2932 				printf("%s %s %s",

  2933 				       p->dep_property,

  2934 				       razor_version_relations[p->dep_relation],

  2935 				       p->dep_version);

  2936 			} else

  2937 				printf("it");

  2938 			printf("\n");

  2940 			errors_only = 1;

  2941 			break;

  2943 		case RAZOR_PACKAGE_NEW_CONFLICT:

  2944 			printf("Error: can't install %s, because it conflicts with %s",

  2945 			       p->name, p->dep_package);

  2946 			if (*p->dep_version) {

  2947 				printf(" %s %s",

  2948 				       razor_version_relations[p->dep_relation],

  2949 				       p->dep_version);

  2950 			}

  2951 			printf("\n");

  2953 			errors_only = 1;

  2954 			break;

  2956 		case RAZOR_PACKAGE_UNSATISFIABLE:

  2957 			printf("Error: can't find package for %s", p->dep_property);

  2958 			if (*p->dep_version) {

  2959 				printf(" %s %s",

  2960 					razor_version_relations[p->dep_relation],

  2961 					p->dep_version);

  2962 			}

  2963 			printf(" which is required by %s\n",

  2964 				p->dep_package);

  2965 			errors_only = 1;

  2966 			break;

  2968 		default:

  2969 			/* Shouldn't actually happen */

  2970 			break;

  2971 		}

  2972 	}

  2973 }

  2975 struct razor_set *

  2976 razor_transaction_run(struct razor_transaction *trans)

  2977 {

  2978 	struct array install_packages, remove_packages;

  2979 	struct razor_merger *merger;

  2980 	struct razor_package *pkg, *i, *iend, *r, *rend, *s, *send;

  2981 	struct source *source1, *source2;

  2982 	char *spool, *ipool, *rpool;

  2983 	uint32_t *map;

  2984 	int p, cmp;

  2986 	/* FIXME */

  2987 	if (trans->errors)

  2988 		return NULL;

  2990 	/* Sort the transaction packages into two arrays */

  2991 	array_init(&install_packages);

  2992 	array_init(&remove_packages);

  2993 	for (p = 0; p < trans->package_count; p++) {

  2994 		if (trans->packages[p].state == RAZOR_PACKAGE_INSTALL) {

  2995 			pkg = array_add(&install_packages, sizeof *pkg);

  2996 			*pkg = *trans->packages[p].new_package;

  2997 		} else {

  2998 			pkg = array_add(&remove_packages, sizeof *pkg);

  2999 			*pkg = *trans->packages[p].old_package;

  3000 		}

  3001 	}

  3002 	map = qsort_with_data(install_packages.data,

  3003 			      install_packages.size / sizeof *pkg,

  3004 			      sizeof *pkg,

  3005 			      compare_packages,

  3006 			      trans->upstream);

  3007 	free(map);

  3008 	map = qsort_with_data(remove_packages.data,

  3009 			      remove_packages.size / sizeof *pkg,

  3010 			      sizeof *pkg,

  3011 			      compare_packages,

  3012 			      trans->system);

  3013 	free(map);

  3015 	merger = razor_merger_create(trans->system, trans->upstream);

  3017 	source1 = &merger->source1;

  3018 	source2 = &merger->source2;

  3020 	i = install_packages.data;

  3021 	iend = install_packages.data + install_packages.size;

  3022 	ipool = trans->upstream->string_pool.data;

  3024 	r = remove_packages.data;

  3025 	rend = remove_packages.data + remove_packages.size;

  3026 	rpool = trans->system->string_pool.data;

  3028 	s = trans->system->packages.data;

  3029 	send = trans->system->packages.data + trans->system->packages.size;

  3030 	spool = trans->system->string_pool.data;

  3032 	while (s < send || i < iend) {

  3033 		/* Check if s is being removed */

  3034 		if (s < send && r < rend &&

  3035 		    s->name == r->name && s->version && r->version) {

  3036 			s++;

  3037 			r++;

  3038 			continue;

  3039 		}

  3041 		if (s < send && i < iend)

  3042 			cmp = strcmp(&spool[s->name], &ipool[i->name]);

  3043 		else if (s < send)

  3044 			cmp = -1;

  3045 		else

  3046 			cmp = 1;

  3047 		if (cmp < 0) {

  3048 			add_package(merger, s, source1, 0);

  3049 			s++;

  3050 		} else if (cmp == 0) {

  3051 			add_package(merger, i, source2, UPSTREAM_SOURCE);

  3052 			s++;

  3053 			i++;

  3054 		} else {

  3055 			add_package(merger, i, source2, UPSTREAM_SOURCE);

  3056 			i++;

  3057 		}

  3058 	}

  3060 	array_release(&install_packages);

  3061 	array_release(&remove_packages);

  3063 	return razor_merger_finish(merger);

  3064 }

  3066 void

  3067 razor_transaction_destroy(struct razor_transaction *trans)

  3068 {

  3069 	int p;

  3071 	for (p = 0; p < trans->package_count; p++) {

  3072 		if (!trans->packages[p].dep_package &&

  3073 		    (trans->packages[p].state == RAZOR_PACKAGE_INSTALL_UNAVAILABLE ||

  3074 		     trans->packages[p].state == RAZOR_PACKAGE_REMOVE_NOT_INSTALLED))

  3075 			free((char *)trans->packages[p].name);

  3076 	}

  3077 	free(trans);

  3079 	/* FIXME: free upstream if it was created as an empty set */

  3080 }

author	Dan Winship <danw@gnome.org>
	Mon Mar 10 11:30:00 2008 -0400 (2008-03-10)
changeset 158	9745a231f8d7
parent 154	229fb0caa092
child 159	9307d0e0b44f
permissions	-rw-r--r--