[U-Boot] [PATCH 3/3] fs-test: Add test for a filename using '..' to go back to the root

[Tuomas Tynkkynen]

The previous commit fixed a problem in FAT code where going back to the
root directory using '..' wouldn't work correctly on FAT12 or FAT16.
Add a test to exercise this case (which was once fixed in commit
18a10d46f26 "fat: handle paths that include ../" but reintroduced due to
the directory iterator refactoring).

This test only very barely catches the problem - without the fix the
size command still gives valid output but the additional spurious
"Invalid FAT entry" error message makes it not get caught in the
'egrep -A3 ' output. I tried to make a proper test that grows the root
directory to two clusters lots of with dummy files but that causes the
write tests to crash the sandbox totally...

Signed-off-by: Tuomas Tynkkynen <tuomas.tynkkynen at iki.fi>
---
 test/fs/fs-test.sh | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/test/fs/fs-test.sh b/test/fs/fs-test.sh
index 2ddac50f90..a8a55e41fc 100755
--- a/test/fs/fs-test.sh
+++ b/test/fs/fs-test.sh
@@ -225,10 +225,14 @@ ${PREFIX}ls host${SUFFIX} $6
 # We want ${PREFIX}size host 0:0 $3 for host commands and
 # sb size hostfs - $3 for hostfs commands.
 # 1MB is 0x0010 0000
-# Test Case 2 - size of small file
+# Test Case 2a - size of small file
 ${PREFIX}size host${SUFFIX} ${FPATH}$FILE_SMALL
 printenv filesize
 setenv filesize
+# Test Case 2b - size of small file via a path using '..'
+${PREFIX}size host${SUFFIX} ${FPATH}SUBDIR/../$FILE_SMALL
+printenv filesize
+setenv filesize
 
 # 2.5GB (1024*1024*2500) is 0x9C40 0000
 # Test Case 3 - size of big file
@@ -343,6 +347,9 @@ function create_files() {
 	mkdir -p "$MOUNT_DIR"
 	sudo mount -o loop,rw "$1" "$MOUNT_DIR"
 
+	# Create a subdirectory.
+	sudo mkdir -p "$MOUNT_DIR/SUBDIR"
+
 	# Create big file in this image.
 	# Note that we work only on the start 1MB, couple MBs in the 2GB range
 	# and the last 1 MB of the huge 2.5GB file.
@@ -457,8 +464,11 @@ function check_results() {
 	pass_fail "TC1: ls of $3"
 
 	# Check size command on 1MB.file
-	egrep -A3 "Test Case 2 " "$1" | grep -q "filesize=100000"
+	egrep -A3 "Test Case 2a " "$1" | grep -q "filesize=100000"
 	pass_fail "TC2: size of $3"
+	# Check size command on 1MB.file via a path using '..'
+	egrep -A3 "Test Case 2b " "$1" | grep -q "filesize=100000"
+	pass_fail "TC2: size of $3 via a path using '..'"
 
 	# Check size command on 2.5GB.file
 	egrep -A3 "Test Case 3 " "$1" | grep -q "filesize=9c400000"
-- 
2.13.0