X-Git-Url: http://git.ozlabs.org/?p=ccan;a=blobdiff_plain;f=ccan%2Ftdb%2Ftest%2Frun-incompatible.c;fp=ccan%2Ftdb%2Ftest%2Frun-incompatible.c;h=21f3b21a23736e27bd5265ae27e343e572463451;hp=0000000000000000000000000000000000000000;hb=95bf6d3f652c031e1bf4a2ef5df187b6f34a4c01;hpb=16f4f30fdd9748d54274745df8a443d32d15bc53

diff --git a/ccan/tdb/test/run-incompatible.c b/ccan/tdb/test/run-incompatible.c
new file mode 100644
index 00000000..21f3b21a
--- /dev/null
+++ b/ccan/tdb/test/run-incompatible.c
@@ -0,0 +1,179 @@
+#define _XOPEN_SOURCE 500
+#include <ccan/tdb/tdb.h>
+#include <ccan/tdb/io.c>
+#include <ccan/tdb/tdb.c>
+#include <ccan/tdb/lock.c>
+#include <ccan/tdb/freelist.c>
+#include <ccan/tdb/traverse.c>
+#include <ccan/tdb/transaction.c>
+#include <ccan/tdb/error.c>
+#include <ccan/tdb/open.c>
+#include <ccan/tdb/check.c>
+#include <ccan/tdb/hash.c>
+#include <ccan/tap/tap.h>
+#include <stdlib.h>
+#include <err.h>
+
+static unsigned int tdb_dumb_hash(TDB_DATA *key)
+{
+	return key->dsize;
+}
+
+static void log_fn(struct tdb_context *tdb, enum tdb_debug_level level, const char *fmt, ...)
+{
+	unsigned int *count = tdb_get_logging_private(tdb);
+	if (strstr(fmt, "hash"))
+		(*count)++;
+}
+
+static unsigned int hdr_rwlocks(const char *fname)
+{
+	struct tdb_header hdr;
+
+	int fd = open(fname, O_RDONLY);
+	if (fd == -1)
+		return -1;
+
+	if (read(fd, &hdr, sizeof(hdr)) != sizeof(hdr))
+		return -1;
+
+	close(fd);
+	return hdr.rwlocks;
+}
+
+int main(int argc, char *argv[])
+{
+	struct tdb_context *tdb;
+	unsigned int log_count, flags;
+	TDB_DATA d;
+	struct tdb_logging_context log_ctx = { log_fn, &log_count };
+
+	plan_tests(38 * 2);
+
+	for (flags = 0; flags <= TDB_CONVERT; flags += TDB_CONVERT) {
+		unsigned int rwmagic = TDB_HASH_RWLOCK_MAGIC;
+
+		if (flags & TDB_CONVERT)
+			tdb_convert(&rwmagic, sizeof(rwmagic));
+
+		/* Create an old-style hash. */
+		log_count = 0;
+		tdb = tdb_open_ex("run-incompatible.tdb", 0, flags,
+				  O_CREAT|O_RDWR|O_TRUNC, 0600, &log_ctx,
+				  NULL);
+		ok1(tdb);
+		ok1(log_count == 0);
+		d.dptr = (void *)"Hello";
+		d.dsize = 5;
+		ok1(tdb_store(tdb, d, d, TDB_INSERT) == 0);
+		tdb_close(tdb);
+
+		/* Should not have marked rwlocks field. */
+		ok1(hdr_rwlocks("run-incompatible.tdb") == 0);
+
+		/* We can still open any old-style with incompat flag. */
+		log_count = 0;
+		tdb = tdb_open_ex("run-incompatible.tdb", 0,
+				  TDB_INCOMPATIBLE_HASH,
+				  O_RDWR, 0600, &log_ctx, NULL);
+		ok1(tdb);
+		ok1(log_count == 0);
+		ok1(tdb_fetch(tdb, d).dsize == 5);
+		ok1(tdb_check(tdb, NULL, NULL) == 0);
+		tdb_close(tdb);
+
+		log_count = 0;
+		tdb = tdb_open_ex("test/jenkins-le-hash.tdb", 0, 0, O_RDONLY,
+				  0, &log_ctx, tdb_jenkins_hash);
+		ok1(tdb);
+		ok1(log_count == 0);
+		ok1(tdb_check(tdb, NULL, NULL) == 0);
+		tdb_close(tdb);
+
+		log_count = 0;
+		tdb = tdb_open_ex("test/jenkins-be-hash.tdb", 0, 0, O_RDONLY,
+				  0, &log_ctx, tdb_jenkins_hash);
+		ok1(tdb);
+		ok1(log_count == 0);
+		ok1(tdb_check(tdb, NULL, NULL) == 0);
+		tdb_close(tdb);
+
+		/* OK, now create with incompatible flag, default hash. */
+		log_count = 0;
+		tdb = tdb_open_ex("run-incompatible.tdb", 0,
+				  flags|TDB_INCOMPATIBLE_HASH,
+				  O_CREAT|O_RDWR|O_TRUNC, 0600, &log_ctx,
+				  NULL);
+		ok1(tdb);
+		ok1(log_count == 0);
+		d.dptr = (void *)"Hello";
+		d.dsize = 5;
+		ok1(tdb_store(tdb, d, d, TDB_INSERT) == 0);
+		tdb_close(tdb);
+
+		/* Should have marked rwlocks field. */
+		ok1(hdr_rwlocks("run-incompatible.tdb") == rwmagic);
+
+		/* Cannot open with old hash. */
+		log_count = 0;
+		tdb = tdb_open_ex("run-incompatible.tdb", 0, 0,
+				  O_RDWR, 0600, &log_ctx, tdb_old_hash);
+		ok1(!tdb);
+		ok1(log_count == 1);
+
+		/* Can open with jenkins hash. */
+		log_count = 0;
+		tdb = tdb_open_ex("run-incompatible.tdb", 0, 0,
+				  O_RDWR, 0600, &log_ctx, tdb_jenkins_hash);
+		ok1(tdb);
+		ok1(log_count == 0);
+		ok1(tdb_fetch(tdb, d).dsize == 5);
+		ok1(tdb_check(tdb, NULL, NULL) == 0);
+		tdb_close(tdb);
+
+		/* Can open by letting it figure it out itself. */
+		log_count = 0;
+		tdb = tdb_open_ex("run-incompatible.tdb", 0, 0,
+				  O_RDWR, 0600, &log_ctx, NULL);
+		ok1(tdb);
+		ok1(log_count == 0);
+		ok1(tdb_fetch(tdb, d).dsize == 5);
+		ok1(tdb_check(tdb, NULL, NULL) == 0);
+		tdb_close(tdb);
+
+		/* We can also use incompatible hash with other hashes. */
+		log_count = 0;
+		tdb = tdb_open_ex("run-incompatible.tdb", 0,
+				  flags|TDB_INCOMPATIBLE_HASH,
+				  O_CREAT|O_RDWR|O_TRUNC, 0600, &log_ctx,
+				  tdb_dumb_hash);
+		ok1(tdb);
+		ok1(log_count == 0);
+		d.dptr = (void *)"Hello";
+		d.dsize = 5;
+		ok1(tdb_store(tdb, d, d, TDB_INSERT) == 0);
+		tdb_close(tdb);
+
+		/* Should have marked rwlocks field. */
+		ok1(hdr_rwlocks("run-incompatible.tdb") == rwmagic);
+
+		/* It should not open if we don't specify. */
+		log_count = 0;
+		tdb = tdb_open_ex("run-incompatible.tdb", 0, 0, O_RDWR, 0,
+				  &log_ctx, NULL);
+		ok1(!tdb);
+		ok1(log_count == 1);
+
+		/* Should reopen with correct hash. */
+		log_count = 0;
+		tdb = tdb_open_ex("run-incompatible.tdb", 0, 0, O_RDWR, 0,
+				  &log_ctx, tdb_dumb_hash);
+		ok1(tdb);
+		ok1(log_count == 0);
+		ok1(tdb_fetch(tdb, d).dsize == 5);
+		ok1(tdb_check(tdb, NULL, NULL) == 0);
+		tdb_close(tdb);
+	}
+
+	return exit_status();
+}