1 files changed, 101 insertions, 0 deletions
diff --git a/cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/io/tst.fds.c b/cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/io/tst.fds.c
new file mode 100644
index 000000000000..9b878a21b91d
--- /dev/null
+++ b/cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/io/tst.fds.c
@@ -0,0 +1,101 @@
+/*
+ * 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 2006 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#pragma ident	"%Z%%M%	%I%	%E% SMI"
+
+#include <sys/ioctl.h>
+
+#include <assert.h>
+#include <setjmp.h>
+#include <signal.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <fcntl.h>
+
+static sigjmp_buf env;
+
+static void
+interrupt(int sig)
+{
+	siglongjmp(env, sig);
+}
+
+int
+main(int argc, char *argv[])
+{
+	const char *file = "/dev/null";
+	int i, n, fds[10];
+	struct sigaction act;
+
+	if (argc > 1) {
+		(void) fprintf(stderr, "Usage: %s\n", argv[0]);
+		return (EXIT_FAILURE);
+	}
+
+	act.sa_handler = interrupt;
+	act.sa_flags = 0;
+
+	(void) sigemptyset(&act.sa_mask);
+	(void) sigaction(SIGUSR1, &act, NULL);
+
+	closefrom(0);
+	n = 0;
+
+	/*
+	 * With all of our file descriptors closed, wait here spinning in bogus
+	 * ioctl() calls until DTrace hits us with a SIGUSR1 to start the test.
+	 */
+	if (sigsetjmp(env, 1) == 0) {
+		for (;;)
+			(void) ioctl(-1, 0, NULL);
+	}
+
+	/*
+	 * To test the fds[] array, we open /dev/null (a file with reliable
+	 * pathname and properties) using various flags and seek offsets.
+	 */
+	fds[n++] = open(file, O_RDONLY);
+	fds[n++] = open(file, O_WRONLY);
+	fds[n++] = open(file, O_RDWR);
+
+	fds[n++] = open(file, O_RDWR | O_APPEND | O_CREAT |
+	    O_NOCTTY | O_NONBLOCK | O_NDELAY | O_SYNC | O_TRUNC | 0666);
+
+	fds[n++] = open(file, O_RDWR);
+	(void) lseek(fds[n - 1], 123, SEEK_SET);
+
+	/*
+	 * Once we have all the file descriptors in the state we want to test,
+	 * issue a bogus ioctl() on each fd with cmd 0 and arg NULL to whack
+	 * our DTrace script into recording the content of the fds[] array.
+	 */
+	for (i = 0; i < n; i++)
+		(void) ioctl(fds[i], 0, NULL);
+
+	assert(n <= sizeof (fds) / sizeof (fds[0]));
+	exit(0);
+}