kernel/vfs: tidy up path_simplify, fix a bug and add regression tests

the bug related to paths ending with /.. and not resolving to /

1 files changed, 6 insertions, 0 deletions

diff --git a/src/kernel/tests/vfs.c b/src/kernel/tests/vfs.c
index 8b450e5..339c6bd 100644
--- a/src/kernel/tests/vfs.c
+++ b/src/kernel/tests/vfs.c
@@ -38,6 +38,12 @@ TEST(path_simplify) {
 	TEST_WRAPPER("/asdf/.",   "/asdf/");
 	TEST_WRAPPER("/asdf//.",  "/asdf/");
 
+	TEST_WRAPPER("/foo/bar/..", "/foo/");
+	TEST_WRAPPER("/foo/bar/../bar",  "/foo/bar");
+	TEST_WRAPPER("/foo/bar/../bar/", "/foo/bar/");
+	TEST_WRAPPER("/foo/bar/xyz/..",  "/foo/bar/");
+	TEST_WRAPPER("/foo/bar/xyz/../", "/foo/bar/");
+
 	// going under the root or close to it
 	TEST_WRAPPER("/..",        NULL);
 	TEST_WRAPPER("/../asdf",   NULL);