1 files changed, 118 insertions, 0 deletions
diff --git a/lib/tdb2/test/run-tdb1-3G-file.c b/lib/tdb2/test/run-tdb1-3G-file.c
new file mode 100644
index 0000000000..6509ca3ab7
--- /dev/null
+++ b/lib/tdb2/test/run-tdb1-3G-file.c
@@ -0,0 +1,118 @@
+/* We need this otherwise fcntl locking fails. */
+#define _FILE_OFFSET_BITS 64
+#include "tdb2-source.h"
+#include <ccan/tap/tap.h>
+#include <stdlib.h>
+#include <err.h>
+#include "tdb1-logging.h"
+
+static int tdb1_expand_file_sparse(struct tdb1_context *tdb,
+				  tdb1_off_t size,
+				  tdb1_off_t addition)
+{
+	if (tdb->read_only || tdb->traverse_read) {
+		tdb->ecode = TDB1_ERR_RDONLY;
+		return -1;
+	}
+
+	if (ftruncate(tdb->fd, size+addition) == -1) {
+		char b = 0;
+		ssize_t written = pwrite(tdb->fd,  &b, 1, (size+addition) - 1);
+		if (written == 0) {
+			/* try once more, potentially revealing errno */
+			written = pwrite(tdb->fd,  &b, 1, (size+addition) - 1);
+		}
+		if (written == 0) {
+			/* again - give up, guessing errno */
+			errno = ENOSPC;
+		}
+		if (written != 1) {
+			TDB1_LOG((tdb, TDB1_DEBUG_FATAL, "expand_file to %d failed (%s)\n",
+				 size+addition, strerror(errno)));
+			return -1;
+		}
+	}
+
+	return 0;
+}
+
+static const struct tdb1_methods large_io_methods = {
+	tdb1_read,
+	tdb1_write,
+	tdb1_next_hash_chain,
+	tdb1_oob,
+	tdb1_expand_file_sparse
+};
+
+static int test_traverse(struct tdb1_context *tdb, TDB1_DATA key, TDB1_DATA data,
+			 void *_data)
+{
+	TDB1_DATA *expect = _data;
+	ok1(key.dsize == strlen("hi"));
+	ok1(memcmp(key.dptr, "hi", strlen("hi")) == 0);
+	ok1(data.dsize == expect->dsize);
+	ok1(memcmp(data.dptr, expect->dptr, data.dsize) == 0);
+	return 0;
+}
+
+int main(int argc, char *argv[])
+{
+	struct tdb1_context *tdb;
+	TDB1_DATA key, orig_data, data;
+	uint32_t hash;
+	tdb1_off_t rec_ptr;
+	struct tdb1_record rec;
+
+	plan_tests(24);
+	tdb = tdb1_open_ex("run-36-file.tdb", 1024, TDB1_CLEAR_IF_FIRST,
+			  O_CREAT|O_TRUNC|O_RDWR, 0600, &taplogctx, NULL);
+
+	ok1(tdb);
+	tdb->methods = &large_io_methods;
+
+	/* Enlarge the file (internally multiplies by 2). */
+	ok1(tdb1_expand(tdb, 1500000000) == 0);
+
+	/* Put an entry in, and check it. */
+	key.dsize = strlen("hi");
+	key.dptr = (void *)"hi";
+	orig_data.dsize = strlen("world");
+	orig_data.dptr = (void *)"world";
+
+	ok1(tdb1_store(tdb, key, orig_data, TDB1_INSERT) == 0);
+
+	data = tdb1_fetch(tdb, key);
+	ok1(data.dsize == strlen("world"));
+	ok1(memcmp(data.dptr, "world", strlen("world")) == 0);
+	free(data.dptr);
+
+	/* That currently fills at the end, make sure that's true. */
+	hash = tdb->hash_fn(&key);
+	rec_ptr = tdb1_find_lock_hash(tdb, key, hash, F_RDLCK, &rec);
+	ok1(rec_ptr);
+	ok1(rec_ptr > 2U*1024*1024*1024);
+	tdb1_unlock(tdb, TDB1_BUCKET(rec.full_hash), F_RDLCK);
+
+	/* Traverse must work. */
+	ok1(tdb1_traverse(tdb, test_traverse, &orig_data) == 1);
+
+	/* Delete should work. */
+	ok1(tdb1_delete(tdb, key) == 0);
+
+	ok1(tdb1_traverse(tdb, test_traverse, NULL) == 0);
+
+	/* Transactions should work. */
+	ok1(tdb1_transaction_start(tdb) == 0);
+	ok1(tdb1_store(tdb, key, orig_data, TDB1_INSERT) == 0);
+
+	data = tdb1_fetch(tdb, key);
+	ok1(data.dsize == strlen("world"));
+	ok1(memcmp(data.dptr, "world", strlen("world")) == 0);
+	free(data.dptr);
+	ok1(tdb1_transaction_commit(tdb) == 0);
+
+	ok1(tdb1_traverse(tdb, test_traverse, &orig_data) == 1);
+	tdb1_close(tdb);
+
+	return exit_status();
+}