1 files changed, 120 insertions, 0 deletions
diff --git a/tests/sys/cddl/zfs/bin/dir_rd_update.c b/tests/sys/cddl/zfs/bin/dir_rd_update.c
new file mode 100644
index 000000000000..f48d74f710a5
--- /dev/null
+++ b/tests/sys/cddl/zfs/bin/dir_rd_update.c
@@ -0,0 +1,120 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License (the "License").
+ * You may not use this file except in compliance with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+
+/*
+ * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ */
+
+
+/*
+ * Assertion:
+ *
+ *	A read operation and directory update operation performed
+ *      concurrently on the same directory can lead to deadlock
+ *	on a UFS logging file system, but not on a ZFS file system.
+ */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#define	TMP_DIR /tmp
+
+static char dirpath[256];
+
+int
+main(int argc, char **argv)
+{
+	char *cp1 = "";
+	int i = 0;
+	int ret = 0;
+	int testdd = 0;
+	pid_t pid;
+	static const int op_num = 5;
+
+	if (argc == 1) {
+		(void) printf("Usage: %s <mount point>\n", argv[0]);
+		exit(-1);
+	}
+	for (i = 0; i < 256; i++) {
+		dirpath[i] = 0;
+	}
+
+	cp1 = argv[1];
+	(void) strcpy(&dirpath[0], (const char *)cp1);
+	(void) strcat(&dirpath[strlen(dirpath)], "TMP_DIR");
+
+	ret = mkdir(dirpath, 0777);
+	if (ret != 0) {
+		if (errno != EEXIST) {
+			(void) printf(
+			"%s: mkdir(<%s>, 0777) failed: errno (decimal)=%d\n",
+				argv[0], dirpath, errno);
+			exit(-1);
+		}
+	}
+	testdd = open(dirpath, O_RDONLY|O_SYNC);
+	if (testdd < 0) {
+		(void) printf(
+"%s: open(<%s>, O_RDONLY|O_SYNC) failed: errno (decimal)=%d\n",
+			argv[0], dirpath, errno);
+		exit(-1);
+	} else {
+		(void) close(testdd);
+	}
+	pid = fork();
+	if (pid > 0) {
+		int fd = open(dirpath, O_RDONLY|O_SYNC);
+		char buf[16];
+		int rdret;
+		int j = 0;
+
+		while (j < op_num) {
+			(void) sleep(1);
+			rdret = read(fd, buf, 16);
+			if (rdret == -1) {
+				(void) printf("readdir failed");
+			}
+			j++;
+		}
+	} else if (pid == 0) {
+		int fd = open(dirpath, O_RDONLY);
+		int chownret;
+		int k = 0;
+
+		while (k < op_num) {
+			(void) sleep(1);
+			chownret = fchown(fd, 0, 0);
+			if (chownret == -1) {
+				(void) printf("chown failed");
+			}
+
+			k++;
+		}
+	}
+
+	return (0);
+}