X-Git-Url: http://git.ozlabs.org/?a=blobdiff_plain;f=ccan%2Fntdb%2Ftest%2Frun-remap-in-read_traverse.c;fp=ccan%2Fntdb%2Ftest%2Frun-remap-in-read_traverse.c;h=ee72c615379ccc1a8b649e38e117fae85df337b3;hb=d69ef83fcc2434ddaced1831184fb761ae6f09d3;hp=0000000000000000000000000000000000000000;hpb=ed95d8600afe1564ffd1783ae9ea0ef6324904dc;p=ccan

diff --git a/ccan/ntdb/test/run-remap-in-read_traverse.c b/ccan/ntdb/test/run-remap-in-read_traverse.c
new file mode 100644
index 00000000..ee72c615
--- /dev/null
+++ b/ccan/ntdb/test/run-remap-in-read_traverse.c
@@ -0,0 +1,57 @@
+#include "ntdb-source.h"
+/* We had a bug where we marked the ntdb read-only for a ntdb_traverse_read.
+ * If we then expanded the ntdb, we would remap read-only, and later SEGV. */
+#include "tap-interface.h"
+#include "external-agent.h"
+#include "logging.h"
+
+static bool file_larger(int fd, ntdb_len_t size)
+{
+	struct stat st;
+
+	fstat(fd, &st);
+	return st.st_size != size;
+}
+
+static unsigned add_records_to_grow(struct agent *agent, int fd, ntdb_len_t size)
+{
+	unsigned int i;
+
+	for (i = 0; !file_larger(fd, size); i++) {
+		char data[50];
+		sprintf(data, "%i=%i", i, i);
+		if (external_agent_operation(agent, STORE, data) != SUCCESS)
+			return 0;
+	}
+	diag("Added %u records to grow file", i);
+	return i;
+}
+
+int main(int argc, char *argv[])
+{
+	unsigned int i;
+	struct agent *agent;
+	struct ntdb_context *ntdb;
+	NTDB_DATA d = ntdb_mkdata("hello", 5);
+	const char filename[] = "run-remap-in-read_traverse.ntdb";
+
+	plan_tests(4);
+
+	agent = prepare_external_agent();
+
+	ntdb = ntdb_open(filename, MAYBE_NOSYNC,
+		       O_RDWR|O_CREAT|O_TRUNC, 0600, &tap_log_attr);
+
+	ok1(external_agent_operation(agent, OPEN, filename) == SUCCESS);
+	i = add_records_to_grow(agent, ntdb->file->fd, ntdb->file->map_size);
+
+	/* Do a traverse. */
+	ok1(ntdb_traverse(ntdb, NULL, NULL) == i);
+
+	/* Now store something! */
+	ok1(ntdb_store(ntdb, d, d, NTDB_INSERT) == 0);
+	ok1(tap_log_messages == 0);
+	ntdb_close(ntdb);
+	free_external_agent(agent);
+	return exit_status();
+}