X-Git-Url: http://git.ozlabs.org/?a=blobdiff_plain;f=ccan%2Fntdb%2Ftest%2Fapi-83-openhook.c;fp=ccan%2Fntdb%2Ftest%2Fapi-83-openhook.c;h=d2930acf552916fab9d1edd6e8a6bd474e229640;hb=d69ef83fcc2434ddaced1831184fb761ae6f09d3;hp=0000000000000000000000000000000000000000;hpb=ed95d8600afe1564ffd1783ae9ea0ef6324904dc;p=ccan

diff --git a/ccan/ntdb/test/api-83-openhook.c b/ccan/ntdb/test/api-83-openhook.c
new file mode 100644
index 00000000..d2930acf
--- /dev/null
+++ b/ccan/ntdb/test/api-83-openhook.c
@@ -0,0 +1,103 @@
+#include "config.h"
+#include "ntdb.h"
+#include "private.h"
+#include "tap-interface.h"
+#include "external-agent.h"
+#include "logging.h"
+
+#define KEY_STR "key"
+
+static enum NTDB_ERROR clear_if_first(int fd, void *arg)
+{
+/* We hold a lock offset 4 always, so we can tell if anyone is holding it.
+ * (This is compatible with tdb's TDB_CLEAR_IF_FIRST flag).  */
+	struct flock fl;
+
+	if (arg != clear_if_first)
+		return NTDB_ERR_CORRUPT;
+
+	fl.l_type = F_WRLCK;
+	fl.l_whence = SEEK_SET;
+	fl.l_start = 4;
+	fl.l_len = 1;
+
+	if (fcntl(fd, F_SETLK, &fl) == 0) {
+		/* We must be first ones to open it! */
+		diag("truncating file!");
+		if (ftruncate(fd, 0) != 0) {
+			return NTDB_ERR_IO;
+		}
+	}
+	fl.l_type = F_RDLCK;
+	if (fcntl(fd, F_SETLKW, &fl) != 0) {
+		return NTDB_ERR_IO;
+	}
+	return NTDB_SUCCESS;
+}
+
+int main(int argc, char *argv[])
+{
+	unsigned int i;
+	struct ntdb_context *ntdb, *ntdb2;
+	struct agent *agent;
+	union ntdb_attribute cif;
+	NTDB_DATA key = ntdb_mkdata(KEY_STR, strlen(KEY_STR));
+	int flags[] = { NTDB_DEFAULT, NTDB_NOMMAP,
+			NTDB_CONVERT, NTDB_NOMMAP|NTDB_CONVERT };
+
+	cif.openhook.base.attr = NTDB_ATTRIBUTE_OPENHOOK;
+	cif.openhook.base.next = &tap_log_attr;
+	cif.openhook.fn = clear_if_first;
+	cif.openhook.data = clear_if_first;
+
+	agent = prepare_external_agent();
+	plan_tests(sizeof(flags) / sizeof(flags[0]) * 16);
+	for (i = 0; i < sizeof(flags) / sizeof(flags[0]); i++) {
+		/* Create it */
+		ntdb = ntdb_open("run-83-openhook.ntdb", flags[i]|MAYBE_NOSYNC,
+				 O_RDWR|O_CREAT|O_TRUNC, 0600, NULL);
+		ok1(ntdb);
+		ok1(ntdb_store(ntdb, key, key, NTDB_REPLACE) == 0);
+		ntdb_close(ntdb);
+
+		/* Now, open with CIF, should clear it. */
+		ntdb = ntdb_open("run-83-openhook.ntdb", flags[i]|MAYBE_NOSYNC,
+				 O_RDWR, 0, &cif);
+		ok1(ntdb);
+		ok1(!ntdb_exists(ntdb, key));
+		ok1(ntdb_store(ntdb, key, key, NTDB_REPLACE) == 0);
+
+		/* Agent should not clear it, since it's still open. */
+		ok1(external_agent_operation(agent, OPEN_WITH_HOOK,
+					     "run-83-openhook.ntdb") == SUCCESS);
+		ok1(external_agent_operation(agent, FETCH, KEY_STR "=" KEY_STR)
+		    == SUCCESS);
+		ok1(external_agent_operation(agent, CLOSE, "") == SUCCESS);
+
+		/* Still exists for us too. */
+		ok1(ntdb_exists(ntdb, key));
+
+		/* Nested open should not erase db. */
+		ntdb2 = ntdb_open("run-83-openhook.ntdb", flags[i]|MAYBE_NOSYNC,
+				  O_RDWR, 0, &cif);
+		ok1(ntdb_exists(ntdb2, key));
+		ok1(ntdb_exists(ntdb, key));
+		ntdb_close(ntdb2);
+
+		ok1(ntdb_exists(ntdb, key));
+
+		/* Close it, now agent should clear it. */
+		ntdb_close(ntdb);
+
+		ok1(external_agent_operation(agent, OPEN_WITH_HOOK,
+					     "run-83-openhook.ntdb") == SUCCESS);
+		ok1(external_agent_operation(agent, FETCH, KEY_STR "=" KEY_STR)
+		    == FAILED);
+		ok1(external_agent_operation(agent, CLOSE, "") == SUCCESS);
+
+		ok1(tap_log_messages == 0);
+	}
+
+	free_external_agent(agent);
+	return exit_status();
+}