X-Git-Url: https://git.ozlabs.org/?a=blobdiff_plain;f=ccan%2Fntdb%2Ftest%2Fhelprun-layout.c;fp=ccan%2Fntdb%2Ftest%2Fhelprun-layout.c;h=0000000000000000000000000000000000000000;hb=8ccb14db10cfedc5c97c9222a7955cee8246b741;hp=fa6fa29fcee744c6029050ad78671b8f38a7207e;hpb=6aa2f4e347e5d66a392b879fe901bc582099a552;p=ccan

diff --git a/ccan/ntdb/test/helprun-layout.c b/ccan/ntdb/test/helprun-layout.c
deleted file mode 100644
index fa6fa29f..00000000
--- a/ccan/ntdb/test/helprun-layout.c
+++ /dev/null
@@ -1,362 +0,0 @@
-/* NTDB tools to create various canned database layouts. */
-#include "layout.h"
-#include <stdlib.h>
-#include <string.h>
-#include <assert.h>
-#include <ccan/err/err.h>
-#include "logging.h"
-
-struct ntdb_layout *new_ntdb_layout(void)
-{
-	struct ntdb_layout *layout = malloc(sizeof(*layout));
-	layout->num_elems = 0;
-	layout->elem = NULL;
-	return layout;
-}
-
-static void add(struct ntdb_layout *layout, union ntdb_layout_elem elem)
-{
-	layout->elem = realloc(layout->elem,
-			       sizeof(layout->elem[0])
-			       * (layout->num_elems+1));
-	layout->elem[layout->num_elems++] = elem;
-}
-
-void ntdb_layout_add_freetable(struct ntdb_layout *layout)
-{
-	union ntdb_layout_elem elem;
-	elem.base.type = FREETABLE;
-	add(layout, elem);
-}
-
-void ntdb_layout_add_free(struct ntdb_layout *layout, ntdb_len_t len,
-			 unsigned ftable)
-{
-	union ntdb_layout_elem elem;
-	elem.base.type = FREE;
-	elem.free.len = len;
-	elem.free.ftable_num = ftable;
-	add(layout, elem);
-}
-
-void ntdb_layout_add_capability(struct ntdb_layout *layout,
-			       uint64_t type,
-			       bool write_breaks,
-			       bool check_breaks,
-			       bool open_breaks,
-			       ntdb_len_t extra)
-{
-	union ntdb_layout_elem elem;
-	elem.base.type = CAPABILITY;
-	elem.capability.type = type;
-	if (write_breaks)
-		elem.capability.type |= NTDB_CAP_NOWRITE;
-	if (open_breaks)
-		elem.capability.type |= NTDB_CAP_NOOPEN;
-	if (check_breaks)
-		elem.capability.type |= NTDB_CAP_NOCHECK;
-	elem.capability.extra = extra;
-	add(layout, elem);
-}
-
-static NTDB_DATA dup_key(NTDB_DATA key)
-{
-	NTDB_DATA ret;
-	ret.dsize = key.dsize;
-	ret.dptr = malloc(ret.dsize);
-	memcpy(ret.dptr, key.dptr, ret.dsize);
-	return ret;
-}
-
-void ntdb_layout_add_used(struct ntdb_layout *layout,
-			 NTDB_DATA key, NTDB_DATA data,
-			 ntdb_len_t extra)
-{
-	union ntdb_layout_elem elem;
-	elem.base.type = DATA;
-	elem.used.key = dup_key(key);
-	elem.used.data = dup_key(data);
-	elem.used.extra = extra;
-	add(layout, elem);
-}
-
-static ntdb_len_t free_record_len(ntdb_len_t len)
-{
-	return sizeof(struct ntdb_used_record) + len;
-}
-
-static ntdb_len_t data_record_len(struct tle_used *used)
-{
-	ntdb_len_t len;
-	len = sizeof(struct ntdb_used_record)
-		+ used->key.dsize + used->data.dsize + used->extra;
-	assert(len >= sizeof(struct ntdb_free_record));
-	return len;
-}
-
-static ntdb_len_t capability_len(struct tle_capability *cap)
-{
-	return sizeof(struct ntdb_capability) + cap->extra;
-}
-
-static ntdb_len_t freetable_len(struct tle_freetable *ftable)
-{
-	return sizeof(struct ntdb_freetable);
-}
-
-static void set_free_record(void *mem, ntdb_len_t len)
-{
-	/* We do all the work in add_to_freetable */
-}
-
-static void add_zero_pad(struct ntdb_used_record *u, size_t len, size_t extra)
-{
-	if (extra)
-		((char *)(u + 1))[len] = '\0';
-}
-
-static void set_data_record(void *mem, struct ntdb_context *ntdb,
-			    struct tle_used *used)
-{
-	struct ntdb_used_record *u = mem;
-
-	set_header(ntdb, u, NTDB_USED_MAGIC, used->key.dsize, used->data.dsize,
-		   used->key.dsize + used->data.dsize + used->extra);
-	memcpy(u + 1, used->key.dptr, used->key.dsize);
-	memcpy((char *)(u + 1) + used->key.dsize,
-	       used->data.dptr, used->data.dsize);
-	add_zero_pad(u, used->key.dsize + used->data.dsize, used->extra);
-}
-
-static void set_capability(void *mem, struct ntdb_context *ntdb,
-			   struct tle_capability *cap, struct ntdb_header *hdr,
-			   ntdb_off_t last_cap)
-{
-	struct ntdb_capability *c = mem;
-	ntdb_len_t len = sizeof(*c) - sizeof(struct ntdb_used_record) + cap->extra;
-
-	c->type = cap->type;
-	c->next = 0;
-	set_header(ntdb, &c->hdr, NTDB_CAP_MAGIC, 0, len, len);
-
-	/* Append to capability list. */
-	if (!last_cap) {
-		hdr->capabilities = cap->base.off;
-	} else {
-		c = (struct ntdb_capability *)((char *)hdr + last_cap);
-		c->next = cap->base.off;
-	}
-}
-
-static void set_freetable(void *mem, struct ntdb_context *ntdb,
-			 struct tle_freetable *freetable, struct ntdb_header *hdr,
-			 ntdb_off_t last_ftable)
-{
-	struct ntdb_freetable *ftable = mem;
-	memset(ftable, 0, sizeof(*ftable));
-	set_header(ntdb, &ftable->hdr, NTDB_FTABLE_MAGIC, 0,
-			sizeof(*ftable) - sizeof(ftable->hdr),
-			sizeof(*ftable) - sizeof(ftable->hdr));
-
-	if (last_ftable) {
-		ftable = (struct ntdb_freetable *)((char *)hdr + last_ftable);
-		ftable->next = freetable->base.off;
-	} else {
-		hdr->free_table = freetable->base.off;
-	}
-}
-
-static void add_to_freetable(struct ntdb_context *ntdb,
-			     ntdb_off_t eoff,
-			     ntdb_off_t elen,
-			     unsigned ftable,
-			     struct tle_freetable *freetable)
-{
-	ntdb->ftable_off = freetable->base.off;
-	ntdb->ftable = ftable;
-	add_free_record(ntdb, eoff, sizeof(struct ntdb_used_record) + elen,
-			NTDB_LOCK_WAIT, false);
-}
-
-/* Get bits from a value. */
-static uint32_t bits(uint64_t val, unsigned start, unsigned num)
-{
-	assert(num <= 32);
-	return (val >> start) & ((1U << num) - 1);
-}
-
-static ntdb_off_t encode_offset(const struct ntdb_context *ntdb,
-				ntdb_off_t new_off, uint32_t hash)
-{
-	ntdb_off_t extra;
-
-	assert((new_off & (1ULL << NTDB_OFF_CHAIN_BIT)) == 0);
-	assert((new_off >> (64 - NTDB_OFF_UPPER_STEAL)) == 0);
-	/* We pack extra hash bits into the upper bits of the offset. */
-	extra = bits(hash, ntdb->hash_bits, NTDB_OFF_UPPER_STEAL);
-	extra <<= (64 - NTDB_OFF_UPPER_STEAL);
-
-	return new_off | extra;
-}
-
-static ntdb_off_t hbucket_off(ntdb_len_t idx)
-{
-	return sizeof(struct ntdb_header) + sizeof(struct ntdb_used_record)
-		+ idx * sizeof(ntdb_off_t);
-}
-
-/* FIXME: Our hash table handling here is primitive: we don't expand! */
-static void add_to_hashtable(struct ntdb_context *ntdb,
-			     ntdb_off_t eoff,
-			     NTDB_DATA key)
-{
-	ntdb_off_t b_off;
-	uint32_t h = ntdb_hash(ntdb, key.dptr, key.dsize);
-
-	b_off = hbucket_off(h & ((1 << ntdb->hash_bits)-1));
-	if (ntdb_read_off(ntdb, b_off) != 0)
-		abort();
-
-	ntdb_write_off(ntdb, b_off, encode_offset(ntdb, eoff, h));
-}
-
-static struct tle_freetable *find_ftable(struct ntdb_layout *layout, unsigned num)
-{
-	unsigned i;
-
-	for (i = 0; i < layout->num_elems; i++) {
-		if (layout->elem[i].base.type != FREETABLE)
-			continue;
-		if (num == 0)
-			return &layout->elem[i].ftable;
-		num--;
-	}
-	abort();
-}
-
-/* FIXME: Support NTDB_CONVERT */
-struct ntdb_context *ntdb_layout_get(struct ntdb_layout *layout,
-				   void (*freefn)(void *),
-				   union ntdb_attribute *attr)
-{
-	unsigned int i;
-	ntdb_off_t off, hdrlen, len, last_ftable, last_cap;
-	char *mem;
-	struct ntdb_context *ntdb;
-
-	/* Now populate our header, cribbing from a real NTDB header. */
-	ntdb = ntdb_open("layout", NTDB_INTERNAL, O_RDWR, 0, attr);
-
-	off = sizeof(struct ntdb_header) + sizeof(struct ntdb_used_record)
-		+ (sizeof(ntdb_off_t) << ntdb->hash_bits);
-	hdrlen = off;
-
-	/* First pass of layout: calc lengths */
-	for (i = 0; i < layout->num_elems; i++) {
-		union ntdb_layout_elem *e = &layout->elem[i];
-		e->base.off = off;
-		switch (e->base.type) {
-		case FREETABLE:
-			len = freetable_len(&e->ftable);
-			break;
-		case FREE:
-			len = free_record_len(e->free.len);
-			break;
-		case DATA:
-			len = data_record_len(&e->used);
-			break;
-		case CAPABILITY:
-			len = capability_len(&e->capability);
-			break;
-		default:
-			abort();
-		}
-		off += len;
-	}
-
-	mem = malloc(off);
-	/* Fill with some weird pattern. */
-	memset(mem, 0x99, off);
-	memcpy(mem, ntdb->file->map_ptr, hdrlen);
-
-	/* Mug the ntdb we have to make it use this. */
-	freefn(ntdb->file->map_ptr);
-	ntdb->file->map_ptr = mem;
-	ntdb->file->map_size = off;
-
-	last_ftable = 0;
-	last_cap = 0;
-	for (i = 0; i < layout->num_elems; i++) {
-		union ntdb_layout_elem *e = &layout->elem[i];
-		switch (e->base.type) {
-		case FREETABLE:
-			set_freetable(mem + e->base.off, ntdb, &e->ftable,
-				     (struct ntdb_header *)mem, last_ftable);
-			last_ftable = e->base.off;
-			break;
-		case FREE:
-			set_free_record(mem + e->base.off, e->free.len);
-			break;
-		case DATA:
-			set_data_record(mem + e->base.off, ntdb, &e->used);
-			break;
-		case CAPABILITY:
-			set_capability(mem + e->base.off, ntdb, &e->capability,
-				       (struct ntdb_header *)mem, last_cap);
-			last_cap = e->base.off;
-			break;
-		}
-	}
-	/* Must have a free table! */
-	assert(last_ftable);
-
-	/* Now fill the free and hash tables. */
-	for (i = 0; i < layout->num_elems; i++) {
-		union ntdb_layout_elem *e = &layout->elem[i];
-		switch (e->base.type) {
-		case FREE:
-			add_to_freetable(ntdb, e->base.off, e->free.len,
-					 e->free.ftable_num,
-					 find_ftable(layout, e->free.ftable_num));
-			break;
-		case DATA:
-			add_to_hashtable(ntdb, e->base.off, e->used.key);
-			break;
-		default:
-			break;
-		}
-	}
-
-	ntdb->ftable_off = find_ftable(layout, 0)->base.off;
-	return ntdb;
-}
-
-void ntdb_layout_write(struct ntdb_layout *layout, void (*freefn)(void *),
-		       union ntdb_attribute *attr, const char *filename)
-{
-	struct ntdb_context *ntdb = ntdb_layout_get(layout, freefn, attr);
-	int fd;
-
-	fd = open(filename, O_WRONLY|O_TRUNC|O_CREAT,  0600);
-	if (fd < 0)
-		err(1, "opening %s for writing", filename);
-	if (write(fd, ntdb->file->map_ptr, ntdb->file->map_size)
-	    != ntdb->file->map_size)
-		err(1, "writing %s", filename);
-	close(fd);
-	ntdb_close(ntdb);
-}
-
-void ntdb_layout_free(struct ntdb_layout *layout)
-{
-	unsigned int i;
-
-	for (i = 0; i < layout->num_elems; i++) {
-		if (layout->elem[i].base.type == DATA) {
-			free(layout->elem[i].used.key.dptr);
-			free(layout->elem[i].used.data.dptr);
-		}
-	}
-	free(layout->elem);
-	free(layout);
-}