1 files changed, 114 insertions, 0 deletions
diff --git a/usr/src/test/os-tests/tests/tmpfs/tmpfs_badmount.ksh b/usr/src/test/os-tests/tests/tmpfs/tmpfs_badmount.ksh
new file mode 100644
index 0000000000..7e2c4a6095
--- /dev/null
+++ b/usr/src/test/os-tests/tests/tmpfs/tmpfs_badmount.ksh
@@ -0,0 +1,114 @@
+#!/usr/bin/ksh
+#
+# This file and its contents are supplied under the terms of the
+# Common Development and Distribution License ("CDDL"), version 1.0.
+# You may only use this file in accordance with the terms of version
+# 1.0 of the CDDL.
+#
+# A full copy of the text of the CDDL should have accompanied this
+# source.  A copy of the CDDL is also available via the Internet at
+# http://www.illumos.org/license/CDDL.
+#
+
+#
+# Copyright 2016 Joyent, Inc.
+#
+
+#
+# Test various options to try and mount a tmpfs. Aside from the first to
+# verify that we can mount tmpfs at all, these should all fail.
+#
+
+tb_arg0=$(basename $0)
+tb_mountpoint="/var/tmp/$0.$$"
+tb_mount=/usr/sbin/mount
+tb_umount=/usr/sbin/umount
+
+function fatal
+{
+	rmdir $tb_mountpoint
+	typeset msg="$*"
+	[[ -z "$msg" ]] && msg="test failed"
+	echo "$tb_arg0: test failed $msg" >&2
+	exit 1
+}
+
+function check_mount
+{
+	mkdir -p $tb_mountpoint || fatal \
+	    "failed to make mountpoint $tb_mountpoint"
+	$tb_mount -F tmpfs swap $tb_mountpoint || fatal \
+	    "failed to mount tmpfs, check user perms"
+	$tb_umount $tb_mountpoint || fatal \
+	    "failed to unmount test point"
+}
+
+function test_one
+{
+	typeset opts=$1
+
+	[[ -z "$opts" ]] && fatal "missing required opts"
+	$tb_mount -F tmpfs -o $opts swap $tb_mountpoint 2>/dev/null
+	if [[ $? -eq 0 ]]; then
+		$tb_umount $tb_mountpoint
+		fatal "successfully mounted with opts $opts, expected failure"
+	fi
+}
+
+check_mount
+
+#
+# Test invalid percentages.
+#
+test_one "size=-5%"
+test_one "size=200%"
+test_one "size=55.55555%"
+test_one "size=100.0%"
+test_one "size=bad%"
+test_one "size=30g%"
+test_one "size=%"
+test_one "size=%wat"
+
+#
+# Test invalid sizes. Only kmg are valid prefixes.
+#
+test_one "size=hello;world"
+test_one "size=0xnope"
+test_one "size=3.14g"
+test_one "size=3;14"
+test_one "size=thisisanormalsize"
+test_one "size="
+test_one "size=100mtry"
+
+#
+# Now, we need to try and trigger a bunch of overflow. We're going to do
+# this assuming we're on a 64-bit kernel (which will always overflow a
+# 32-bit kernel).
+#
+test_one "size=20000000000000000000"
+test_one "size=1ggggggggggggggggggg"
+test_one "size=1mmmmmmmmmmmmmmmmmmm"
+test_one "size=1kkkkkkkkkkkkkkkkkkk"
+test_one "size=1kkkkkkkkkkkkkkkkkkk"
+test_one "size=18014398509481983k"
+test_one "size=17592186044416m"
+test_one "size=17179869185g"
+test_one "size=17179869184g"
+
+#
+# Let's throw a couple bad modes around while we're here.
+#
+test_one "mode=17777"
+test_one "mode=27777"
+test_one "mode=37777"
+test_one "mode=47777"
+test_one "mode=57777"
+test_one "mode=67777"
+test_one "mode=77777"
+test_one "mode=87777"
+test_one "mode=97777"
+test_one "mode=asdf"
+test_one "mode=deadbeef"
+test_one "mode=kefka"
+
+rmdir $tb_mountpoint