tdb2: add TDB_ATTRIBUTE_TDB1_HASHSIZE

This replaces the tdb1_open "hash_size" argument.  It will only be
valid when you call tdb_open() with O_CREAT in open_flags, and
TDB_VERSION1 in tdb_flags.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
(Imported from CCAN commit 49475d68deecd0b31597ed6094229171d2699b11)

1 files changed, 61 insertions, 0 deletions

diff --git a/lib/tdb2/test/run-tdb1-hashsize.c b/lib/tdb2/test/run-tdb1-hashsize.c
new file mode 100644
index 0000000000..fc48c23076
--- /dev/null
+++ b/lib/tdb2/test/run-tdb1-hashsize.c
@@ -0,0 +1,61 @@
+#include "tdb2-source.h"
+#include <ccan/tap/tap.h>
+#include <stdlib.h>
+#include <err.h>
+#include "logging.h"
+
+int main(int argc, char *argv[])
+{
+	struct tdb_context *tdb;
+	union tdb_attribute hsize, h2;
+
+	hsize.base.attr = TDB_ATTRIBUTE_TDB1_HASHSIZE;
+	hsize.base.next = &tap_log_attr;
+	hsize.tdb1_hashsize.hsize = 1024;
+
+	plan_tests(14);
+	tdb = tdb1_open("run-tdb1-hashsize.tdb1", TDB_DEFAULT,
+			O_CREAT|O_TRUNC|O_RDWR, 0600, &hsize);
+	ok1(tdb);
+	h2.base.attr = TDB_ATTRIBUTE_TDB1_HASHSIZE;
+	ok1(tdb_get_attribute(tdb, &h2) == TDB_SUCCESS);
+	ok1(h2.tdb1_hashsize.hsize == hsize.tdb1_hashsize.hsize);
+	tdb_close(tdb);
+
+	/* Can't specify TDB_ATTRIBUTE_TDB1_HASHSIZE without O_CREAT */
+	tdb = tdb1_open("run-tdb1-hashsize.tdb1", TDB_DEFAULT,
+			O_RDWR, 0600, &hsize);
+	ok1(!tdb);
+	ok1(tap_log_messages == 1);
+
+	/* Can't specify TDB_ATTRIBUTE_TDB1_HASHSIZE for version2. */
+	tdb = tdb_open("run-tdb1-hashsize.tdb", TDB_DEFAULT,
+			O_CREAT|O_TRUNC|O_RDWR, 0600, &hsize);
+	ok1(!tdb);
+	ok1(tap_log_messages == 2);
+
+	/* We can get attribute even if we didn't set it though. */
+	tdb = tdb1_open("run-tdb1-hashsize.tdb1", TDB_DEFAULT,
+			O_RDWR, 0600, &tap_log_attr);
+
+	ok1(tdb);
+	memset(&h2, 0, sizeof(h2));
+	h2.base.attr = TDB_ATTRIBUTE_TDB1_HASHSIZE;
+	ok1(tdb_get_attribute(tdb, &h2) == TDB_SUCCESS);
+	ok1(h2.tdb1_hashsize.hsize == hsize.tdb1_hashsize.hsize);
+	tdb_close(tdb);
+
+	/* Check for default hash size. */
+	tdb = tdb1_open("run-tdb1-hashsize.tdb1", TDB_DEFAULT,
+			O_CREAT|O_TRUNC|O_RDWR, 0600, &tap_log_attr);
+
+	ok1(tdb);
+	memset(&h2, 0, sizeof(h2));
+	h2.base.attr = TDB_ATTRIBUTE_TDB1_HASHSIZE;
+	ok1(tdb_get_attribute(tdb, &h2) == TDB_SUCCESS);
+	ok1(h2.tdb1_hashsize.hsize == TDB1_DEFAULT_HASH_SIZE);
+	tdb_close(tdb);
+	ok1(tap_log_messages == 2);
+
+	return exit_status();
+}