1 files changed, 83 insertions, 0 deletions
diff --git a/tests/sys/kern/pipe/pipe_overcommit2_test.c b/tests/sys/kern/pipe/pipe_overcommit2_test.c
new file mode 100644
index 0000000..ee1e714
--- /dev/null
+++ b/tests/sys/kern/pipe/pipe_overcommit2_test.c
@@ -0,0 +1,83 @@
+/*-
+ * Copyright (C) 2005 Michael J. Silbersack <silby@freebsd.org> 
+ *  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice(s), this list of conditions and the following disclaimer as
+ *    the first lines of this file unmodified other than the possible
+ *    addition of one or more copyright notices.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice(s), this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ */
+
+#include <sys/param.h>
+#include <err.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+/*
+ * $FreeBSD$
+ * This program tests how sys_pipe.c handles the case where there
+ * is ample memory to allocate a pipe, but the file descriptor
+ * limit for that user has been exceeded.
+ */
+
+int
+main(void)
+{
+	char template[] = "pipe.XXXXXXXXXX";
+	int lastfd, pipes[10000], returnval;
+	unsigned int i;
+
+	lastfd = -1;
+
+	if (mkstemp(template) == -1)
+		err(1, "mkstemp failed");
+
+	for (i = 0; i < nitems(pipes); i++) {
+		returnval = open(template, O_RDONLY);
+		if (returnval == -1 && (errno == ENFILE || errno == EMFILE))
+			break; /* All descriptors exhausted. */
+		else
+			lastfd = returnval;
+	}
+
+	/* First falloc failure case in sys_pipe.c:pipe() */
+	for (i = 0; i < 1000; i++) {
+		returnval = pipe(&pipes[i]);
+	}
+
+	/*
+	 * Free just one FD so that the second falloc failure
+	 * case will occur.
+	 */
+	close(lastfd);
+
+	for (i = 0; i < 1000; i++) {
+		returnval = pipe(&pipes[i]);
+	}
+	printf("PASS\n");
+
+	unlink(template);
+
+	exit(0);
+}