X-Git-Url: https://git.ozlabs.org/?a=blobdiff_plain;f=ccan%2Ftdb2%2Ftest%2Frun-01-new_database.c;h=a2f5e8fcbb110dee2c7a7284a3f4f89c8774c2ef;hb=b21004624683be5bf1d8f75e3b5be4e9618049ee;hp=ea385b60e325dbcd54eccf742c62f373509cc62f;hpb=5e8b9af5e7fe5f1ccac407873a3b782b8a629782;p=ccan

diff --git a/ccan/tdb2/test/run-01-new_database.c b/ccan/tdb2/test/run-01-new_database.c
index ea385b60..a2f5e8fc 100644
--- a/ccan/tdb2/test/run-01-new_database.c
+++ b/ccan/tdb2/test/run-01-new_database.c
@@ -1,3 +1,4 @@
+#include <ccan/failtest/failtest_override.h>
 #include <ccan/tdb2/tdb.c>
 #include <ccan/tdb2/free.c>
 #include <ccan/tdb2/lock.c>
@@ -6,8 +7,115 @@
 #include <ccan/tdb2/transaction.c>
 #include <ccan/tdb2/check.c>
 #include <ccan/tap/tap.h>
+#include <ccan/failtest/failtest.h>
 #include "logging.h"
 
+/* FIXME: Check these! */
+#define INITIAL_TDB_MALLOC	"tdb.c", 189, FAILTEST_MALLOC
+#define LOGGING_MALLOC		"tdb.c", 766, FAILTEST_MALLOC
+#define URANDOM_OPEN		"tdb.c", 49, FAILTEST_OPEN
+#define URANDOM_READ		"tdb.c", 29, FAILTEST_READ
+
+static bool failmatch(const struct failtest_call *call,
+		      const char *file, int line, enum failtest_call_type type)
+{
+	return call->type == type
+		&& call->line == line
+		&& ((strcmp(call->file, file) == 0)
+		    || (strends(call->file, file)
+			&& (call->file[strlen(call->file) - strlen(file) - 1]
+			    == '/')));
+}
+
+static const struct failtest_call *
+find_repeat(const struct failtest_call *start, const struct failtest_call *end,
+	    const struct failtest_call *call)
+{
+	const struct failtest_call *i;
+
+	for (i = start; i < end; i++) {
+		if (failmatch(i, call->file, call->line, call->type))
+			return i;
+	}
+	return NULL;
+}
+
+static bool is_nonblocking_lock(const struct failtest_call *call)
+{
+	return call->type == FAILTEST_FCNTL && call->u.fcntl.cmd == F_SETLK;
+}
+
+/* Some places we soldier on despite errors: only fail them once. */
+static enum failtest_result
+block_repeat_failures(struct failtest_call *history, unsigned num)
+{
+	const struct failtest_call *i, *last = &history[num-1];
+
+	if (failmatch(last, INITIAL_TDB_MALLOC)
+	    || failmatch(last, LOGGING_MALLOC)
+	    || failmatch(last, URANDOM_OPEN)
+	    || failmatch(last, URANDOM_READ)) {
+		if (find_repeat(history, last, last))
+			return FAIL_DONT_FAIL;
+		return FAIL_PROBE;
+	}
+
+	/* Unlock or non-blocking lock is fail-once. */
+	if (last->type == FAILTEST_FCNTL
+	    && last->u.fcntl.arg.fl.l_type == F_UNLCK) {
+		/* Find a previous unlock at this point? */
+		for (i = find_repeat(history, last, last);
+		     i;
+		     i = find_repeat(history, i, last)) {
+			if (i->u.fcntl.arg.fl.l_type == F_UNLCK)
+				return FAIL_DONT_FAIL;
+		}
+		return FAIL_PROBE;
+	} else if (is_nonblocking_lock(last)) {
+		/* Find a previous non-blocking lock at this point? */
+		for (i = find_repeat(history, last, last);
+		     i;
+		     i = find_repeat(history, i, last)) {
+			if (is_nonblocking_lock(i))
+				return FAIL_DONT_FAIL;
+		}
+		return FAIL_PROBE;
+	}
+
+	return FAIL_OK;
+}
+
+static bool exit_check(struct failtest_call *history, unsigned num)
+{
+	unsigned int i;
+
+	for (i = 0; i < num; i++) {
+		if (!history[i].fail)
+			continue;
+		/* Failing the /dev/urandom open doesn't count: we fall back. */
+		if (failmatch(&history[i], URANDOM_OPEN))
+			continue;
+
+		/* Similarly with read fail. */
+		if (failmatch(&history[i], URANDOM_READ))
+			continue;
+
+		/* Initial allocation of tdb doesn't log. */
+		if (failmatch(&history[i], INITIAL_TDB_MALLOC))
+			continue;
+
+		/* We don't block "failures" on non-blocking locks. */
+		if (is_nonblocking_lock(&history[i]))
+			continue;
+
+		if (!tap_log_messages)
+			diag("We didn't log for %u (%s:%u)",
+			     i, history[i].file, history[i].line);
+		return tap_log_messages != 0;
+	}
+	return true;
+}
+
 int main(int argc, char *argv[])
 {
 	unsigned int i;
@@ -16,16 +124,23 @@ int main(int argc, char *argv[])
 			TDB_INTERNAL|TDB_CONVERT, TDB_CONVERT, 
 			TDB_NOMMAP|TDB_CONVERT };
 
-	plan_tests(sizeof(flags) / sizeof(flags[0]) * 2 + 1);
+	failtest_init(argc, argv);
+	failtest_hook = block_repeat_failures;
+	failtest_exit_check = exit_check;
+	plan_tests(sizeof(flags) / sizeof(flags[0]) * 3);
 	for (i = 0; i < sizeof(flags) / sizeof(flags[0]); i++) {
 		tdb = tdb_open("run-new_database.tdb", flags[i],
 			       O_RDWR|O_CREAT|O_TRUNC, 0600, &tap_log_attr);
-		ok1(tdb);
+		if (!ok1(tdb))
+			failtest_exit(exit_status());
 		if (tdb) {
-			ok1(tdb_check(tdb, NULL, NULL) == 0);
+			bool ok = ok1(tdb_check(tdb, NULL, NULL) == 0);
 			tdb_close(tdb);
+			if (!ok)
+				failtest_exit(exit_status());
 		}
+		if (!ok1(tap_log_messages == 0))
+			break;
 	}
-	ok1(tap_log_messages == 0);
-	return exit_status();
+	failtest_exit(exit_status());
 }