1 files changed, 137 insertions, 0 deletions
diff --git a/tools/regression/priv/priv_proc_setrlimit.c b/tools/regression/priv/priv_proc_setrlimit.c
new file mode 100644
index 0000000..adf471b
--- /dev/null
+++ b/tools/regression/priv/priv_proc_setrlimit.c
@@ -0,0 +1,137 @@
+/*-
+ * Copyright (c) 2006 nCircle Network Security, Inc.
+ * All rights reserved.
+ *
+ * This software was developed by Robert N. M. Watson for the TrustedBSD
+ * Project under contract to nCircle Network Security, Inc.
+ *
+ * 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, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, 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 AUTHOR AND CONTRIBUTORS ``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 AUTHOR, NCIRCLE NETWORK SECURITY,
+ * INC., OR CONTRIBUTORS 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.
+ *
+ * $FreeBSD$
+ */
+
+/*
+ * Test that raising current resource limits above hard resource limits
+ * requires privilege.  There is one privilege check, but two conditions:
+ *
+ * - To raise the current above the maximum.
+ *
+ * - To raise the maximum.
+ */
+
+#include <sys/types.h>
+#include <sys/time.h>
+#include <sys/resource.h>
+
+#include <err.h>
+#include <errno.h>
+#include <unistd.h>
+
+#include "main.h"
+
+void
+priv_proc_setrlimit(void)
+{
+	struct rlimit rl, rl_lower, rl_raise_max, rl_raise_cur;
+	int error;
+
+	assert_root();
+
+	/*
+	 * To make sure that there is room to raise the resource limit, we
+	 * must first lower it.  Otherwise, if the resource limit is already
+	 * at the global maximum, that complicates matters.  In principle, we
+	 * can bump into privilege failures during setup, but there's not
+	 * much we can do about that.  Keep this prototypical setting around
+	 * as the target to restore to later.
+	 */
+	if (getrlimit(RLIMIT_DATA, &rl) < 0)
+		err(-1, "getrlimit(RLIMIT_DATA)");
+
+	/*
+	 * What to lower to before trying to raise.
+	 */
+	rl_lower = rl;
+	rl_lower.rlim_cur -= 10;
+	rl_lower.rlim_max = rl_lower.rlim_cur;
+
+	/*
+	 * Raise the maximum.
+	 */
+	rl_raise_max = rl;
+	rl_raise_max.rlim_max += 10;
+
+	/*
+	 * Raise the current above the maximum.
+	 */
+	rl_raise_cur = rl;
+	rl_raise_cur.rlim_cur += 10;
+
+	/*
+	 * Test raising the maximum with privilege.
+	 */
+	if (setrlimit(RLIMIT_DATA, &rl_lower) < 0)
+		err(-1, "setrlimit(RLIMIT_DATA, lower) as root");
+
+	if (setrlimit(RLIMIT_DATA, &rl_raise_max) < 0)
+		err(-1, "setrlimit(RLIMIT_DATA, raise_max) as root");
+
+	/*
+	 * Test raising the current above the maximum with privilege.
+	 */
+	if (setrlimit(RLIMIT_DATA, &rl_lower) < 0)
+		err(-1, "setrlimit(RLIMIT_DATA, lower) as root");
+
+	if (setrlimit(RLIMIT_DATA, &rl_raise_cur) < 0)
+		err(-1, "setrlimit(RLIMIT_DATA, raise_cur) as root");
+
+	/*
+	 * Test raising the maximum without privilege.
+	 */
+	if (setrlimit(RLIMIT_DATA, &rl_lower) < 0)
+		err(-1, "setrlimit(RLIMIT_DATA, lower) as root");
+
+	set_euid(UID_OTHER);
+	error = setrlimit(RLIMIT_DATA, &rl_raise_max);
+	if (error == 0)
+		errx(-1,
+		    "setrlimit(RLIMIT_DATA, raise_max) succeeded as !root");
+	if (errno != EPERM)
+		err(-1, "setrlimit(RLIMIT_DATA, raise_max) wrong errno %d "
+		    "as !root", errno);
+
+	/*
+	 * Test raising the current above the maximum without privilege.
+	 */
+	set_euid(UID_ROOT);
+	if (setrlimit(RLIMIT_DATA, &rl_lower) < 0)
+		err(-1, "setrlimit(RLIMIT_DATA, lower) as root");
+	set_euid(UID_OTHER);
+
+	error = setrlimit(RLIMIT_DATA, &rl_raise_cur);
+	if (error == 0)
+		errx(-1,
+		    "setrlimit(RLIMIT_DATA, raise_cur) succeeded as !root");
+	if (errno != EPERM)
+		err(-1, "setrlimit(RLIMIT_DATA, raise_cur) wrong errno %d "
+		    "as !root", errno);
+}