btrfs-progs: tests: check that receive --dump escapes target paths

Verify that receive --dump escapes paths for rename, symlink and
hardlink when it's the "dest=" value.

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

tests/misc-tests/054-receive-dump-newlines/test.sh

@@ -0,0 +1,39 @@
+#!/bin/bash
+# Verify that receive --dump escapes paths for rename, symlink and hardlink
+# when it's the "dest=" value
+
+source "$TEST_TOP/common"
+
+setup_root_helper
+prepare_test_dev
+
+run_check_mkfs_test_dev
+run_check_mount_test_dev
+
+# Create filenames so if the newlines are not properly escaped the word
+# 'failed' appears on the first line in the dump
+
+# Symlink
+run_check $SUDO_HELPER "$TOP/btrfs" subvolume create "$TEST_MNT/subv1"
+run_check $SUDO_HELPER ln -s "$TEST_MNT/subv1/file
+failed symlink source" "$TEST_MNT/subv1/file
+failed symlink target"
+
+# Hardlinke
+run_check $SUDO_HELPER touch "$TEST_MNT/subv1/file
+failed link source"
+
+run_check $SUDO_HELPER ln "$TEST_MNT/subv1/file
+failed link source" "$TEST_MNT/subv1/file
+failed link target"
+
+run_check $SUDO_HELPER "$TOP/btrfs" subvolume snapshot -r "$TEST_MNT/subv1" "$TEST_MNT/snap1"
+touch send.stream
+chmod a+w send.stream
+run_check $SUDO_HELPER "$TOP/btrfs" send -f send.stream "$TEST_MNT/snap1"
+
+run_check_stdout "$TOP/btrfs" receive --dump -f send.stream |
+	grep '^failed' && _fail "newlines not escaped in stream dump"
+
+run_check_umount_test_dev
+rm -- send.stream