btrfs-progs: tests: add misc 014-filesystem-label

Test various label lengths on a mounted filesystem.

Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/tests/misc-tests/014-filesystem-label/test.sh b/tests/misc-tests/014-filesystem-label/test.sh
new file mode 100755 (executable)
index 0000000..a5e08cc
--- /dev/null
+++ b/tests/misc-tests/014-filesystem-label/test.sh
@@ -0,0 +1,69 @@
+#!/bin/bash
+#
+# test label settings
+
+source $TOP/tests/common
+
+check_prereq mkfs.btrfs
+check_prereq btrfs
+
+setup_root_helper
+
+run_check truncate -s 2G $IMAGE
+run_check $TOP/mkfs.btrfs -L BTRFS-TEST-LABEL -f $IMAGE
+run_check $SUDO_HELPER mount $IMAGE $TEST_MNT
+run_check $SUDO_HELPER chmod a+rw $TEST_MNT
+
+cd $TEST_MNT
+run_check $SUDO_HELPER $TOP/btrfs filesystem label $TEST_MNT
+# shortest label
+run_check $SUDO_HELPER $TOP/btrfs filesystem label $TEST_MNT a
+run_check $SUDO_HELPER $TOP/btrfs filesystem label $TEST_MNT
+run_check $SUDO_HELPER $TOP/btrfs filesystem label $TEST_MNT ''
+
+longlabel=\
+0123456789\
+0123456789\
+0123456789\
+0123456789\
+0123456789\
+\
+0123456789\
+0123456789\
+0123456789\
+0123456789\
+0123456789\
+\
+0123456789\
+0123456789\
+0123456789\
+0123456789\
+0123456789\
+\
+0123456789\
+0123456789\
+0123456789\
+0123456789\
+0123456789\
+\
+0123456789\
+0123456789\
+0123456789\
+0123456789\
+0123456789\
+\
+01234
+
+run_check $SUDO_HELPER $TOP/btrfs filesystem label $TEST_MNT "$longlabel"
+run_check $SUDO_HELPER $TOP/btrfs filesystem label $TEST_MNT
+# 256, must fail
+run_mustfail "label 256 bytes long succeeded" \
+       $SUDO_HELPER $TOP/btrfs filesystem label $TEST_MNT "$longlabel"5
+run_check $SUDO_HELPER $TOP/btrfs filesystem label $TEST_MNT
+run_mustfail "label 2 * 255 bytes long succeeded" \
+       $SUDO_HELPER $TOP/btrfs filesystem label $TEST_MNT "$longlabel$longlabel"
+run_check $SUDO_HELPER $TOP/btrfs filesystem label $TEST_MNT
+
+cd ..
+
+run_check $SUDO_HELPER umount $TEST_MNT