diff --git a/tests/test_paths.toml b/tests/test_paths.toml
index 08ef3b3e..8a027a7b 100644
--- a/tests/test_paths.toml
+++ b/tests/test_paths.toml
@@ -4548,6 +4548,1168 @@ code = '''
     lfsr_unmount(&lfs) => 0;
 '''
 
+# trailing notsup tests
+[cases.test_paths_notsup]
+in = 'lfs.c'
+code = '''
+    lfs_t lfs;
+    lfsr_format(&lfs, LFS_F_RDWR, CFG) => 0;
+    lfsr_mount(&lfs, LFS_F_RDWR, CFG) => 0;
+
+    // create paths
+    lfsr_mkdir(&lfs, "coffee") => 0;
+    // create paths with unknown file types
+    const char *path;
+    lfsr_mdir_t mdir;
+    lfsr_did_t did;
+    path = "coffee/drip";
+    lfsr_mtree_pathlookup(&lfs, &path,
+            &mdir, NULL, &did) => LFS_ERR_NOENT;
+    lfsr_mdir_commit(&lfs, &mdir, LFSR_RATS(
+            LFSR_RAT_NAME(
+                LFSR_TAG_NAME + 0x13, +1,
+                did, path, lfsr_path_namelen(path)))) => 0;
+    path = "coffee/coldbrew";
+    lfsr_mtree_pathlookup(&lfs, &path,
+            &mdir, NULL, &did) => LFS_ERR_NOENT;
+    lfsr_mdir_commit(&lfs, &mdir, LFSR_RATS(
+            LFSR_RAT_NAME(
+                LFSR_TAG_NAME + 0x13, +1,
+                did, path, lfsr_path_namelen(path)))) => 0;
+    path = "coffee/turkish";
+    lfsr_mtree_pathlookup(&lfs, &path,
+            &mdir, NULL, &did) => LFS_ERR_NOENT;
+    lfsr_mdir_commit(&lfs, &mdir, LFSR_RATS(
+            LFSR_RAT_NAME(
+                LFSR_TAG_NAME + 0x13, +1,
+                did, path, lfsr_path_namelen(path)))) => 0;
+    path = "coffee/tubruk";
+    lfsr_mtree_pathlookup(&lfs, &path,
+            &mdir, NULL, &did) => LFS_ERR_NOENT;
+    lfsr_mdir_commit(&lfs, &mdir, LFSR_RATS(
+            LFSR_RAT_NAME(
+                LFSR_TAG_NAME + 0x13, +1,
+                did, path, lfsr_path_namelen(path)))) => 0;
+    path = "coffee/vietnamese";
+    lfsr_mtree_pathlookup(&lfs, &path,
+            &mdir, NULL, &did) => LFS_ERR_NOENT;
+    lfsr_mdir_commit(&lfs, &mdir, LFSR_RATS(
+            LFSR_RAT_NAME(
+                LFSR_TAG_NAME + 0x13, +1,
+                did, path, lfsr_path_namelen(path)))) => 0;
+    path = "coffee/thai";
+    lfsr_mtree_pathlookup(&lfs, &path,
+            &mdir, NULL, &did) => LFS_ERR_NOENT;
+    lfsr_mdir_commit(&lfs, &mdir, LFSR_RATS(
+            LFSR_RAT_NAME(
+                LFSR_TAG_NAME + 0x13, +1,
+                did, path, lfsr_path_namelen(path)))) => 0;
+
+    // stat paths
+    struct lfs_info info;
+    lfsr_stat(&lfs, "coffee/drip", &info) => 0;
+    assert(strcmp(info.name, "drip") == 0);
+    assert(info.type == 0x13);
+    lfsr_stat(&lfs, "coffee/coldbrew", &info) => 0;
+    assert(strcmp(info.name, "coldbrew") == 0);
+    assert(info.type == 0x13);
+    lfsr_stat(&lfs, "coffee/turkish", &info) => 0;
+    assert(strcmp(info.name, "turkish") == 0);
+    assert(info.type == 0x13);
+    lfsr_stat(&lfs, "coffee/tubruk", &info) => 0;
+    assert(strcmp(info.name, "tubruk") == 0);
+    assert(info.type == 0x13);
+    lfsr_stat(&lfs, "coffee/vietnamese", &info) => 0;
+    assert(strcmp(info.name, "vietnamese") == 0);
+    assert(info.type == 0x13);
+    lfsr_stat(&lfs, "coffee/thai", &info) => 0;
+    assert(strcmp(info.name, "thai") == 0);
+    assert(info.type == 0x13);
+
+    // file open paths, only works on files!
+    lfsr_file_t file;
+    lfsr_file_open(&lfs, &file, "coffee/drip",
+            LFS_O_RDONLY) => LFS_ERR_NOTSUP;
+    lfsr_file_open(&lfs, &file, "coffee/coldbrew",
+            LFS_O_RDONLY) => LFS_ERR_NOTSUP;
+    lfsr_file_open(&lfs, &file, "coffee/turkish",
+            LFS_O_RDONLY) => LFS_ERR_NOTSUP;
+    lfsr_file_open(&lfs, &file, "coffee/tubruk",
+            LFS_O_RDONLY) => LFS_ERR_NOTSUP;
+    lfsr_file_open(&lfs, &file, "coffee/vietnamese",
+            LFS_O_RDONLY) => LFS_ERR_NOTSUP;
+    lfsr_file_open(&lfs, &file, "coffee/thai",
+            LFS_O_RDONLY) => LFS_ERR_NOTSUP;
+
+    // dir open paths, only works on dirs!
+    lfsr_dir_t dir;
+    lfsr_dir_open(&lfs, &dir, "coffee/drip") => LFS_ERR_NOTDIR;
+    lfsr_dir_open(&lfs, &dir, "coffee/coldbrew") => LFS_ERR_NOTDIR;
+    lfsr_dir_open(&lfs, &dir, "coffee/turkish") => LFS_ERR_NOTDIR;
+    lfsr_dir_open(&lfs, &dir, "coffee/tubruk") => LFS_ERR_NOTDIR;
+    lfsr_dir_open(&lfs, &dir, "coffee/vietnamese") => LFS_ERR_NOTDIR;
+    lfsr_dir_open(&lfs, &dir, "coffee/thai") => LFS_ERR_NOTDIR;
+
+    // rename paths
+    lfsr_mkdir(&lfs, "espresso") => 0;
+    lfsr_rename(&lfs,
+            "coffee/drip",
+            "espresso/espresso") => LFS_ERR_NOTSUP;
+    lfsr_rename(&lfs,
+            "coffee/coldbrew",
+            "espresso/americano") => LFS_ERR_NOTSUP;
+    lfsr_rename(&lfs,
+            "coffee/turkish",
+            "espresso/macchiato") => LFS_ERR_NOTSUP;
+    lfsr_rename(&lfs,
+            "coffee/tubruk",
+            "espresso/latte") => LFS_ERR_NOTSUP;
+    lfsr_rename(&lfs,
+            "coffee/vietnamese",
+            "espresso/cappuccino") => LFS_ERR_NOTSUP;
+    lfsr_rename(&lfs,
+            "coffee/thai",
+            "espresso/mocha") => LFS_ERR_NOTSUP;
+
+    // here's a weird one, what happens if our rename is also a noop?
+    lfsr_rename(&lfs,
+            "coffee/drip",
+            "coffee/drip") => LFS_ERR_NOTSUP;
+    lfsr_rename(&lfs,
+            "coffee/coldbrew",
+            "coffee/coldbrew") => LFS_ERR_NOTSUP;
+    lfsr_rename(&lfs,
+            "coffee/turkish",
+            "coffee/turkish") => LFS_ERR_NOTSUP;
+    lfsr_rename(&lfs,
+            "coffee/tubruk",
+            "coffee/tubruk") => LFS_ERR_NOTSUP;
+    lfsr_rename(&lfs,
+            "coffee/vietnamese",
+            "coffee/vietnamese") => LFS_ERR_NOTSUP;
+    lfsr_rename(&lfs,
+            "coffee/thai",
+            "coffee/thai") => LFS_ERR_NOTSUP;
+
+    // remove paths
+    lfsr_remove(&lfs, "coffee/drip") => LFS_ERR_NOTSUP;
+    lfsr_remove(&lfs, "coffee/coldbrew") => LFS_ERR_NOTSUP;
+    lfsr_remove(&lfs, "coffee/turkish") => LFS_ERR_NOTSUP;
+    lfsr_remove(&lfs, "coffee/tubruk") => LFS_ERR_NOTSUP;
+    lfsr_remove(&lfs, "coffee/vietnamese") => LFS_ERR_NOTSUP;
+    lfsr_remove(&lfs, "coffee/thai") => LFS_ERR_NOTSUP;
+
+    // stat paths
+    lfsr_stat(&lfs, "espresso/espresso", &info) => LFS_ERR_NOENT;
+    lfsr_stat(&lfs, "espresso/americano", &info) => LFS_ERR_NOENT;
+    lfsr_stat(&lfs, "espresso/macchiato", &info) => LFS_ERR_NOENT;
+    lfsr_stat(&lfs, "espresso/latte", &info) => LFS_ERR_NOENT;
+    lfsr_stat(&lfs, "espresso/cappuccino", &info) => LFS_ERR_NOENT;
+    lfsr_stat(&lfs, "espresso/mocha", &info) => LFS_ERR_NOENT;
+
+    lfsr_stat(&lfs, "coffee/drip", &info) => 0;
+    assert(strcmp(info.name, "drip") == 0);
+    assert(info.type == 0x13);
+    lfsr_stat(&lfs, "coffee/coldbrew", &info) => 0;
+    assert(strcmp(info.name, "coldbrew") == 0);
+    assert(info.type == 0x13);
+    lfsr_stat(&lfs, "coffee/turkish", &info) => 0;
+    assert(strcmp(info.name, "turkish") == 0);
+    assert(info.type == 0x13);
+    lfsr_stat(&lfs, "coffee/tubruk", &info) => 0;
+    assert(strcmp(info.name, "tubruk") == 0);
+    assert(info.type == 0x13);
+    lfsr_stat(&lfs, "coffee/vietnamese", &info) => 0;
+    assert(strcmp(info.name, "vietnamese") == 0);
+    assert(info.type == 0x13);
+    lfsr_stat(&lfs, "coffee/thai", &info) => 0;
+    assert(strcmp(info.name, "thai") == 0);
+    assert(info.type == 0x13);
+
+    lfsr_unmount(&lfs) => 0;
+'''
+
+# parent notsup tests
+[cases.test_paths_notsup_parent]
+defines.DIR = [false, true]
+in = 'lfs.c'
+code = '''
+    lfs_t lfs;
+    lfsr_format(&lfs, LFS_F_RDWR, CFG) => 0;
+    lfsr_mount(&lfs, LFS_F_RDWR, CFG) => 0;
+
+    // create paths with unknown file types
+    const char *path;
+    lfsr_mdir_t mdir;
+    lfsr_did_t did;
+    path = "drip";
+    lfsr_mtree_pathlookup(&lfs, &path,
+            &mdir, NULL, &did) => LFS_ERR_NOENT;
+    lfsr_mdir_commit(&lfs, &mdir, LFSR_RATS(
+            LFSR_RAT_NAME(
+                LFSR_TAG_NAME + 0x13, +1,
+                did, path, lfsr_path_namelen(path)))) => 0;
+    path = "coldbrew";
+    lfsr_mtree_pathlookup(&lfs, &path,
+            &mdir, NULL, &did) => LFS_ERR_NOENT;
+    lfsr_mdir_commit(&lfs, &mdir, LFSR_RATS(
+            LFSR_RAT_NAME(
+                LFSR_TAG_NAME + 0x13, +1,
+                did, path, lfsr_path_namelen(path)))) => 0;
+    path = "turkish";
+    lfsr_mtree_pathlookup(&lfs, &path,
+            &mdir, NULL, &did) => LFS_ERR_NOENT;
+    lfsr_mdir_commit(&lfs, &mdir, LFSR_RATS(
+            LFSR_RAT_NAME(
+                LFSR_TAG_NAME + 0x13, +1,
+                did, path, lfsr_path_namelen(path)))) => 0;
+    path = "tubruk";
+    lfsr_mtree_pathlookup(&lfs, &path,
+            &mdir, NULL, &did) => LFS_ERR_NOENT;
+    lfsr_mdir_commit(&lfs, &mdir, LFSR_RATS(
+            LFSR_RAT_NAME(
+                LFSR_TAG_NAME + 0x13, +1,
+                did, path, lfsr_path_namelen(path)))) => 0;
+    path = "vietnamese";
+    lfsr_mtree_pathlookup(&lfs, &path,
+            &mdir, NULL, &did) => LFS_ERR_NOENT;
+    lfsr_mdir_commit(&lfs, &mdir, LFSR_RATS(
+            LFSR_RAT_NAME(
+                LFSR_TAG_NAME + 0x13, +1,
+                did, path, lfsr_path_namelen(path)))) => 0;
+    path = "thai";
+    lfsr_mtree_pathlookup(&lfs, &path,
+            &mdir, NULL, &did) => LFS_ERR_NOENT;
+    lfsr_mdir_commit(&lfs, &mdir, LFSR_RATS(
+            LFSR_RAT_NAME(
+                LFSR_TAG_NAME + 0x13, +1,
+                did, path, lfsr_path_namelen(path)))) => 0;
+
+    if (DIR) {
+        lfsr_mkdir(&lfs, "drip/coffee") => LFS_ERR_NOTSUP;
+        lfsr_mkdir(&lfs, "coldbrew/coffee") => LFS_ERR_NOTSUP;
+        lfsr_mkdir(&lfs, "turkish/coffee") => LFS_ERR_NOTSUP;
+        lfsr_mkdir(&lfs, "tubruk/coffee") => LFS_ERR_NOTSUP;
+        lfsr_mkdir(&lfs, "vietnamese/coffee") => LFS_ERR_NOTSUP;
+        lfsr_mkdir(&lfs, "thai/coffee") => LFS_ERR_NOTSUP;
+    } else {
+        lfsr_file_t file;
+        lfsr_file_open(&lfs, &file, "drip/coffee",
+                LFS_O_WRONLY | LFS_O_CREAT | LFS_O_EXCL) => LFS_ERR_NOTSUP;
+        lfsr_file_open(&lfs, &file, "coldbrew/coffee",
+                LFS_O_WRONLY | LFS_O_CREAT | LFS_O_EXCL) => LFS_ERR_NOTSUP;
+        lfsr_file_open(&lfs, &file, "turkish/coffee",
+                LFS_O_WRONLY | LFS_O_CREAT | LFS_O_EXCL) => LFS_ERR_NOTSUP;
+        lfsr_file_open(&lfs, &file, "tubruk/coffee",
+                LFS_O_WRONLY | LFS_O_CREAT | LFS_O_EXCL) => LFS_ERR_NOTSUP;
+        lfsr_file_open(&lfs, &file, "vietnamese/coffee",
+                LFS_O_WRONLY | LFS_O_CREAT | LFS_O_EXCL) => LFS_ERR_NOTSUP;
+        lfsr_file_open(&lfs, &file, "thai/coffee",
+                LFS_O_WRONLY | LFS_O_CREAT | LFS_O_EXCL) => LFS_ERR_NOTSUP;
+    }
+
+    // stat paths
+    struct lfs_info info;
+    lfsr_stat(&lfs, "drip/coffee", &info) => LFS_ERR_NOTSUP;
+    lfsr_stat(&lfs, "coldbrew/coffee", &info) => LFS_ERR_NOTSUP;
+    lfsr_stat(&lfs, "turkish/coffee", &info) => LFS_ERR_NOTSUP;
+    lfsr_stat(&lfs, "tubruk/coffee", &info) => LFS_ERR_NOTSUP;
+    lfsr_stat(&lfs, "vietnamese/coffee", &info) => LFS_ERR_NOTSUP;
+    lfsr_stat(&lfs, "thai/coffee", &info) => LFS_ERR_NOTSUP;
+
+    // file open paths, only works on files!
+    lfsr_file_t file;
+    lfsr_file_open(&lfs, &file, "drip/coffee",
+            LFS_O_RDONLY) => LFS_ERR_NOTSUP;
+    lfsr_file_open(&lfs, &file, "coldbrew/coffee",
+            LFS_O_RDONLY) => LFS_ERR_NOTSUP;
+    lfsr_file_open(&lfs, &file, "turkish/coffee",
+            LFS_O_RDONLY) => LFS_ERR_NOTSUP;
+    lfsr_file_open(&lfs, &file, "tubruk/coffee",
+            LFS_O_RDONLY) => LFS_ERR_NOTSUP;
+    lfsr_file_open(&lfs, &file, "vietnamese/coffee",
+            LFS_O_RDONLY) => LFS_ERR_NOTSUP;
+    lfsr_file_open(&lfs, &file, "thai/coffee",
+            LFS_O_RDONLY) => LFS_ERR_NOTSUP;
+
+    lfsr_file_open(&lfs, &file, "drip/coffee",
+            LFS_O_WRONLY | LFS_O_CREAT) => LFS_ERR_NOTSUP;
+    lfsr_file_open(&lfs, &file, "coldbrew/coffee",
+            LFS_O_WRONLY | LFS_O_CREAT) => LFS_ERR_NOTSUP;
+    lfsr_file_open(&lfs, &file, "turkish/coffee",
+            LFS_O_WRONLY | LFS_O_CREAT) => LFS_ERR_NOTSUP;
+    lfsr_file_open(&lfs, &file, "tubruk/coffee",
+            LFS_O_WRONLY | LFS_O_CREAT) => LFS_ERR_NOTSUP;
+    lfsr_file_open(&lfs, &file, "vietnamese/coffee",
+            LFS_O_WRONLY | LFS_O_CREAT) => LFS_ERR_NOTSUP;
+    lfsr_file_open(&lfs, &file, "thai/coffee",
+            LFS_O_WRONLY | LFS_O_CREAT) => LFS_ERR_NOTSUP;
+
+    lfsr_file_open(&lfs, &file, "drip/coffee",
+            LFS_O_WRONLY | LFS_O_CREAT | LFS_O_EXCL) => LFS_ERR_NOTSUP;
+    lfsr_file_open(&lfs, &file, "coldbrew/coffee",
+            LFS_O_WRONLY | LFS_O_CREAT | LFS_O_EXCL) => LFS_ERR_NOTSUP;
+    lfsr_file_open(&lfs, &file, "turkish/coffee",
+            LFS_O_WRONLY | LFS_O_CREAT | LFS_O_EXCL) => LFS_ERR_NOTSUP;
+    lfsr_file_open(&lfs, &file, "tubruk/coffee",
+            LFS_O_WRONLY | LFS_O_CREAT | LFS_O_EXCL) => LFS_ERR_NOTSUP;
+    lfsr_file_open(&lfs, &file, "vietnamese/coffee",
+            LFS_O_WRONLY | LFS_O_CREAT | LFS_O_EXCL) => LFS_ERR_NOTSUP;
+    lfsr_file_open(&lfs, &file, "thai/coffee",
+            LFS_O_WRONLY | LFS_O_CREAT | LFS_O_EXCL) => LFS_ERR_NOTSUP;
+
+    // dir open paths, only works on dirs!
+    lfsr_dir_t dir;
+    lfsr_dir_open(&lfs, &dir, "drip/coffee") => LFS_ERR_NOTSUP;
+    lfsr_dir_open(&lfs, &dir, "coldbrew/coffee") => LFS_ERR_NOTSUP;
+    lfsr_dir_open(&lfs, &dir, "turkish/coffee") => LFS_ERR_NOTSUP;
+    lfsr_dir_open(&lfs, &dir, "tubruk/coffee") => LFS_ERR_NOTSUP;
+    lfsr_dir_open(&lfs, &dir, "vietnamese/coffee") => LFS_ERR_NOTSUP;
+    lfsr_dir_open(&lfs, &dir, "thai/coffee") => LFS_ERR_NOTSUP;
+
+    // make some normal paths so we have something to rename
+    lfsr_mkdir(&lfs, "coffee") => 0;
+    if (DIR) {
+        lfsr_mkdir(&lfs, "coffee/drip") => 0;
+        lfsr_mkdir(&lfs, "coffee/coldbrew") => 0;
+        lfsr_mkdir(&lfs, "coffee/turkish") => 0;
+        lfsr_mkdir(&lfs, "coffee/tubruk") => 0;
+        lfsr_mkdir(&lfs, "coffee/vietnamese") => 0;
+        lfsr_mkdir(&lfs, "coffee/thai") => 0;
+    } else {
+        lfsr_file_t file;
+        lfsr_file_open(&lfs, &file, "coffee/drip",
+                LFS_O_WRONLY | LFS_O_CREAT | LFS_O_EXCL) => 0;
+        lfsr_file_close(&lfs, &file) => 0;
+        lfsr_file_open(&lfs, &file, "coffee/coldbrew",
+                LFS_O_WRONLY | LFS_O_CREAT | LFS_O_EXCL) => 0;
+        lfsr_file_close(&lfs, &file) => 0;
+        lfsr_file_open(&lfs, &file, "coffee/turkish",
+                LFS_O_WRONLY | LFS_O_CREAT | LFS_O_EXCL) => 0;
+        lfsr_file_close(&lfs, &file) => 0;
+        lfsr_file_open(&lfs, &file, "coffee/tubruk",
+                LFS_O_WRONLY | LFS_O_CREAT | LFS_O_EXCL) => 0;
+        lfsr_file_close(&lfs, &file) => 0;
+        lfsr_file_open(&lfs, &file, "coffee/vietnamese",
+                LFS_O_WRONLY | LFS_O_CREAT | LFS_O_EXCL) => 0;
+        lfsr_file_close(&lfs, &file) => 0;
+        lfsr_file_open(&lfs, &file, "coffee/thai",
+                LFS_O_WRONLY | LFS_O_CREAT | LFS_O_EXCL) => 0;
+        lfsr_file_close(&lfs, &file) => 0;
+    }
+
+    // rename paths
+    lfsr_mkdir(&lfs, "espresso") => 0;
+    // bad source
+    lfsr_rename(&lfs,
+            "drip/coffee",
+            "espresso/espresso") => LFS_ERR_NOTSUP;
+    lfsr_rename(&lfs,
+            "coldbrew/coffee",
+            "espresso/americano") => LFS_ERR_NOTSUP;
+    lfsr_rename(&lfs,
+            "turkish/coffee",
+            "espresso/macchiato") => LFS_ERR_NOTSUP;
+    lfsr_rename(&lfs,
+            "tubruk/coffee",
+            "espresso/latte") => LFS_ERR_NOTSUP;
+    lfsr_rename(&lfs,
+            "vietnamese/coffee",
+            "espresso/cappuccino") => LFS_ERR_NOTSUP;
+    lfsr_rename(&lfs,
+            "thai/coffee",
+            "espresso/mocha") => LFS_ERR_NOTSUP;
+
+    // bad destination
+    lfsr_rename(&lfs,
+            "coffee/drip",
+            "drip/espresso") => LFS_ERR_NOTSUP;
+    lfsr_rename(&lfs,
+            "coffee/coldbrew",
+            "coldbrew/espresso") => LFS_ERR_NOTSUP;
+    lfsr_rename(&lfs,
+            "coffee/turkish",
+            "turkish/espresso") => LFS_ERR_NOTSUP;
+    lfsr_rename(&lfs,
+            "coffee/tubruk",
+            "tubruk/espresso") => LFS_ERR_NOTSUP;
+    lfsr_rename(&lfs,
+            "coffee/vietnamese",
+            "vietnamese/espresso") => LFS_ERR_NOTSUP;
+    lfsr_rename(&lfs,
+            "coffee/thai",
+            "thai/espresso") => LFS_ERR_NOTSUP;
+
+    // bad source and bad destination
+    lfsr_rename(&lfs,
+            "drip/coffee",
+            "drip/espresso") => LFS_ERR_NOTSUP;
+    lfsr_rename(&lfs,
+            "coldbrew/coffee",
+            "coldbrew/espresso") => LFS_ERR_NOTSUP;
+    lfsr_rename(&lfs,
+            "turkish/coffee",
+            "turkish/espresso") => LFS_ERR_NOTSUP;
+    lfsr_rename(&lfs,
+            "tubruk/coffee",
+            "tubruk/espresso") => LFS_ERR_NOTSUP;
+    lfsr_rename(&lfs,
+            "vietnamese/coffee",
+            "vietnamese/espresso") => LFS_ERR_NOTSUP;
+    lfsr_rename(&lfs,
+            "thai/coffee",
+            "thai/espresso") => LFS_ERR_NOTSUP;
+
+    // here's a weird one, what happens if our rename is also a noop?
+    lfsr_rename(&lfs,
+            "drip/coffee",
+            "drip/coffee") => LFS_ERR_NOTSUP;
+    lfsr_rename(&lfs,
+            "coldbrew/coffee",
+            "coldbrew/coffee") => LFS_ERR_NOTSUP;
+    lfsr_rename(&lfs,
+            "turkish/coffee",
+            "turkish/coffee") => LFS_ERR_NOTSUP;
+    lfsr_rename(&lfs,
+            "tubruk/coffee",
+            "tubruk/coffee") => LFS_ERR_NOTSUP;
+    lfsr_rename(&lfs,
+            "vietnamese/coffee",
+            "vietnamese/coffee") => LFS_ERR_NOTSUP;
+    lfsr_rename(&lfs,
+            "thai/coffee",
+            "thai/coffee") => LFS_ERR_NOTSUP;
+
+    // remove paths
+    lfsr_stat(&lfs, "drip/espresso", &info) => LFS_ERR_NOTSUP;
+    lfsr_stat(&lfs, "coldbrew/espresso", &info) => LFS_ERR_NOTSUP;
+    lfsr_stat(&lfs, "turkish/espresso", &info) => LFS_ERR_NOTSUP;
+    lfsr_stat(&lfs, "tubruk/espresso", &info) => LFS_ERR_NOTSUP;
+    lfsr_stat(&lfs, "vietnamese/espresso", &info) => LFS_ERR_NOTSUP;
+    lfsr_stat(&lfs, "thai/espresso", &info) => LFS_ERR_NOTSUP;
+
+    // stat paths
+    lfsr_stat(&lfs, "drip/espresso", &info) => LFS_ERR_NOTSUP;
+    lfsr_stat(&lfs, "coldbrew/espresso", &info) => LFS_ERR_NOTSUP;
+    lfsr_stat(&lfs, "turkish/espresso", &info) => LFS_ERR_NOTSUP;
+    lfsr_stat(&lfs, "tubruk/espresso", &info) => LFS_ERR_NOTSUP;
+    lfsr_stat(&lfs, "vietnamese/espresso", &info) => LFS_ERR_NOTSUP;
+    lfsr_stat(&lfs, "thai/espresso", &info) => LFS_ERR_NOTSUP;
+
+    lfsr_stat(&lfs, "coffee/drip", &info) => 0;
+    assert(strcmp(info.name, "drip") == 0);
+    assert(info.type == ((DIR) ? LFS_TYPE_DIR : LFS_TYPE_REG));
+    lfsr_stat(&lfs, "coffee/coldbrew", &info) => 0;
+    assert(strcmp(info.name, "coldbrew") == 0);
+    assert(info.type == ((DIR) ? LFS_TYPE_DIR : LFS_TYPE_REG));
+    lfsr_stat(&lfs, "coffee/turkish", &info) => 0;
+    assert(strcmp(info.name, "turkish") == 0);
+    assert(info.type == ((DIR) ? LFS_TYPE_DIR : LFS_TYPE_REG));
+    lfsr_stat(&lfs, "coffee/tubruk", &info) => 0;
+    assert(strcmp(info.name, "tubruk") == 0);
+    assert(info.type == ((DIR) ? LFS_TYPE_DIR : LFS_TYPE_REG));
+    lfsr_stat(&lfs, "coffee/vietnamese", &info) => 0;
+    assert(strcmp(info.name, "vietnamese") == 0);
+    assert(info.type == ((DIR) ? LFS_TYPE_DIR : LFS_TYPE_REG));
+    lfsr_stat(&lfs, "coffee/thai", &info) => 0;
+    assert(strcmp(info.name, "thai") == 0);
+    assert(info.type == ((DIR) ? LFS_TYPE_DIR : LFS_TYPE_REG));
+
+    lfsr_unmount(&lfs) => 0;
+'''
+
+# notsup tests with trailing slashes
+[cases.test_paths_notsup_trailing_slashes]
+in = 'lfs.c'
+code = '''
+    lfs_t lfs;
+    lfsr_format(&lfs, LFS_F_RDWR, CFG) => 0;
+    lfsr_mount(&lfs, LFS_F_RDWR, CFG) => 0;
+
+    // create paths
+    lfsr_mkdir(&lfs, "coffee") => 0;
+    // create paths with unknown file types
+    const char *path;
+    lfsr_mdir_t mdir;
+    lfsr_did_t did;
+    path = "coffee/drip";
+    lfsr_mtree_pathlookup(&lfs, &path,
+            &mdir, NULL, &did) => LFS_ERR_NOENT;
+    lfsr_mdir_commit(&lfs, &mdir, LFSR_RATS(
+            LFSR_RAT_NAME(
+                LFSR_TAG_NAME + 0x13, +1,
+                did, path, lfsr_path_namelen(path)))) => 0;
+    path = "coffee/coldbrew";
+    lfsr_mtree_pathlookup(&lfs, &path,
+            &mdir, NULL, &did) => LFS_ERR_NOENT;
+    lfsr_mdir_commit(&lfs, &mdir, LFSR_RATS(
+            LFSR_RAT_NAME(
+                LFSR_TAG_NAME + 0x13, +1,
+                did, path, lfsr_path_namelen(path)))) => 0;
+    path = "coffee/turkish";
+    lfsr_mtree_pathlookup(&lfs, &path,
+            &mdir, NULL, &did) => LFS_ERR_NOENT;
+    lfsr_mdir_commit(&lfs, &mdir, LFSR_RATS(
+            LFSR_RAT_NAME(
+                LFSR_TAG_NAME + 0x13, +1,
+                did, path, lfsr_path_namelen(path)))) => 0;
+    path = "coffee/tubruk";
+    lfsr_mtree_pathlookup(&lfs, &path,
+            &mdir, NULL, &did) => LFS_ERR_NOENT;
+    lfsr_mdir_commit(&lfs, &mdir, LFSR_RATS(
+            LFSR_RAT_NAME(
+                LFSR_TAG_NAME + 0x13, +1,
+                did, path, lfsr_path_namelen(path)))) => 0;
+    path = "coffee/vietnamese";
+    lfsr_mtree_pathlookup(&lfs, &path,
+            &mdir, NULL, &did) => LFS_ERR_NOENT;
+    lfsr_mdir_commit(&lfs, &mdir, LFSR_RATS(
+            LFSR_RAT_NAME(
+                LFSR_TAG_NAME + 0x13, +1,
+                did, path, lfsr_path_namelen(path)))) => 0;
+    path = "coffee/thai";
+    lfsr_mtree_pathlookup(&lfs, &path,
+            &mdir, NULL, &did) => LFS_ERR_NOENT;
+    lfsr_mdir_commit(&lfs, &mdir, LFSR_RATS(
+            LFSR_RAT_NAME(
+                LFSR_TAG_NAME + 0x13, +1,
+                did, path, lfsr_path_namelen(path)))) => 0;
+
+    // stat paths
+    struct lfs_info info;
+    lfsr_stat(&lfs, "coffee/drip//////", &info) => LFS_ERR_NOTSUP;
+    lfsr_stat(&lfs, "coffee/coldbrew/////", &info) => LFS_ERR_NOTSUP;
+    lfsr_stat(&lfs, "coffee/turkish////", &info) => LFS_ERR_NOTSUP;
+    lfsr_stat(&lfs, "coffee/tubruk///", &info) => LFS_ERR_NOTSUP;
+    lfsr_stat(&lfs, "coffee/vietnamese//", &info) => LFS_ERR_NOTSUP;
+    lfsr_stat(&lfs, "coffee/thai/", &info) => LFS_ERR_NOTSUP;
+
+    // file open paths, only works on files!
+    lfsr_file_t file;
+    lfsr_file_open(&lfs, &file, "coffee/drip/",
+            LFS_O_RDONLY) => LFS_ERR_NOTSUP;
+    lfsr_file_open(&lfs, &file, "coffee/coldbrew//",
+            LFS_O_RDONLY) => LFS_ERR_NOTSUP;
+    lfsr_file_open(&lfs, &file, "coffee/turkish///",
+            LFS_O_RDONLY) => LFS_ERR_NOTSUP;
+    lfsr_file_open(&lfs, &file, "coffee/tubruk////",
+            LFS_O_RDONLY) => LFS_ERR_NOTSUP;
+    lfsr_file_open(&lfs, &file, "coffee/vietnamese/////",
+            LFS_O_RDONLY) => LFS_ERR_NOTSUP;
+    lfsr_file_open(&lfs, &file, "coffee/thai//////",
+            LFS_O_RDONLY) => LFS_ERR_NOTSUP;
+
+    lfsr_file_open(&lfs, &file, "coffee/drip/",
+            LFS_O_WRONLY | LFS_O_CREAT) => LFS_ERR_NOTSUP;
+    lfsr_file_open(&lfs, &file, "coffee/coldbrew//",
+            LFS_O_WRONLY | LFS_O_CREAT) => LFS_ERR_NOTSUP;
+    lfsr_file_open(&lfs, &file, "coffee/turkish///",
+            LFS_O_WRONLY | LFS_O_CREAT) => LFS_ERR_NOTSUP;
+    lfsr_file_open(&lfs, &file, "coffee/tubruk////",
+            LFS_O_WRONLY | LFS_O_CREAT) => LFS_ERR_NOTSUP;
+    lfsr_file_open(&lfs, &file, "coffee/vietnamese/////",
+            LFS_O_WRONLY | LFS_O_CREAT) => LFS_ERR_NOTSUP;
+    lfsr_file_open(&lfs, &file, "coffee/thai//////",
+            LFS_O_WRONLY | LFS_O_CREAT) => LFS_ERR_NOTSUP;
+
+    lfsr_file_open(&lfs, &file, "coffee/drip/",
+            LFS_O_WRONLY | LFS_O_CREAT | LFS_O_EXCL) => LFS_ERR_NOTSUP;
+    lfsr_file_open(&lfs, &file, "coffee/coldbrew//",
+            LFS_O_WRONLY | LFS_O_CREAT | LFS_O_EXCL) => LFS_ERR_NOTSUP;
+    lfsr_file_open(&lfs, &file, "coffee/turkish///",
+            LFS_O_WRONLY | LFS_O_CREAT | LFS_O_EXCL) => LFS_ERR_NOTSUP;
+    lfsr_file_open(&lfs, &file, "coffee/tubruk////",
+            LFS_O_WRONLY | LFS_O_CREAT | LFS_O_EXCL) => LFS_ERR_NOTSUP;
+    lfsr_file_open(&lfs, &file, "coffee/vietnamese/////",
+            LFS_O_WRONLY | LFS_O_CREAT | LFS_O_EXCL) => LFS_ERR_NOTSUP;
+    lfsr_file_open(&lfs, &file, "coffee/thai//////",
+            LFS_O_WRONLY | LFS_O_CREAT | LFS_O_EXCL) => LFS_ERR_NOTSUP;
+
+    // dir open paths, only works on dirs!
+    lfsr_dir_t dir;
+    lfsr_dir_open(&lfs, &dir, "coffee/drip/") => LFS_ERR_NOTSUP;
+    lfsr_dir_open(&lfs, &dir, "coffee/coldbrew//") => LFS_ERR_NOTSUP;
+    lfsr_dir_open(&lfs, &dir, "coffee/turkish///") => LFS_ERR_NOTSUP;
+    lfsr_dir_open(&lfs, &dir, "coffee/tubruk////") => LFS_ERR_NOTSUP;
+    lfsr_dir_open(&lfs, &dir, "coffee/vietnamese/////") => LFS_ERR_NOTSUP;
+    lfsr_dir_open(&lfs, &dir, "coffee/thai//////") => LFS_ERR_NOTSUP;
+
+    // rename paths
+    lfsr_mkdir(&lfs, "espresso") => 0;
+    // bad source
+    lfsr_rename(&lfs,
+            "coffee/drip//////",
+            "espresso/espresso") => LFS_ERR_NOTSUP;
+    lfsr_rename(&lfs,
+            "coffee/coldbrew/////",
+            "espresso/americano") => LFS_ERR_NOTSUP;
+    lfsr_rename(&lfs,
+            "coffee/turkish////",
+            "espresso/macchiato") => LFS_ERR_NOTSUP;
+    lfsr_rename(&lfs,
+            "coffee/tubruk///",
+            "espresso/latte") => LFS_ERR_NOTSUP;
+    lfsr_rename(&lfs,
+            "coffee/vietnamese//",
+            "espresso/cappuccino") => LFS_ERR_NOTSUP;
+    lfsr_rename(&lfs,
+            "coffee/thai/",
+            "espresso/mocha") => LFS_ERR_NOTSUP;
+
+    // bad destination
+    lfsr_rename(&lfs,
+            "coffee/drip",
+            "espresso/espresso/") => LFS_ERR_NOTSUP;
+    lfsr_rename(&lfs,
+            "coffee/coldbrew",
+            "espresso/americano//") => LFS_ERR_NOTSUP;
+    lfsr_rename(&lfs,
+            "coffee/turkish",
+            "espresso/macchiato///") => LFS_ERR_NOTSUP;
+    lfsr_rename(&lfs,
+            "coffee/tubruk",
+            "espresso/latte////") => LFS_ERR_NOTSUP;
+    lfsr_rename(&lfs,
+            "coffee/vietnamese",
+            "espresso/cappuccino/////") => LFS_ERR_NOTSUP;
+    lfsr_rename(&lfs,
+            "coffee/thai",
+            "espresso/mocha//////") => LFS_ERR_NOTSUP;
+
+    // bad source and bad destination
+    lfsr_rename(&lfs,
+            "coffee/drip//////",
+            "espresso/espresso/") => LFS_ERR_NOTSUP;
+    lfsr_rename(&lfs,
+            "coffee/coldbrew/////",
+            "espresso/americano//") => LFS_ERR_NOTSUP;
+    lfsr_rename(&lfs,
+            "coffee/turkish////",
+            "espresso/macchiato///") => LFS_ERR_NOTSUP;
+    lfsr_rename(&lfs,
+            "coffee/tubruk///",
+            "espresso/latte////") => LFS_ERR_NOTSUP;
+    lfsr_rename(&lfs,
+            "coffee/vietnamese//",
+            "espresso/cappuccino/////") => LFS_ERR_NOTSUP;
+    lfsr_rename(&lfs,
+            "coffee/thai/",
+            "espresso/mocha//////") => LFS_ERR_NOTSUP;
+
+    // here's a weird one, what happens if our rename is also a noop?
+    lfsr_rename(&lfs,
+            "coffee/drip//////",
+            "coffee/drip//////") => LFS_ERR_NOTSUP;
+    lfsr_rename(&lfs,
+            "coffee/coldbrew/////",
+            "coffee/coldbrew/////") => LFS_ERR_NOTSUP;
+    lfsr_rename(&lfs,
+            "coffee/turkish////",
+            "coffee/turkish////") => LFS_ERR_NOTSUP;
+    lfsr_rename(&lfs,
+            "coffee/tubruk///",
+            "coffee/tubruk///") => LFS_ERR_NOTSUP;
+    lfsr_rename(&lfs,
+            "coffee/vietnamese//",
+            "coffee/vietnamese//") => LFS_ERR_NOTSUP;
+    lfsr_rename(&lfs,
+            "coffee/thai/",
+            "coffee/thai/") => LFS_ERR_NOTSUP;
+
+    // remove paths
+    lfsr_remove(&lfs, "coffee/drip/") => LFS_ERR_NOTSUP;
+    lfsr_remove(&lfs, "coffee/coldbrew//") => LFS_ERR_NOTSUP;
+    lfsr_remove(&lfs, "coffee/turkish///") => LFS_ERR_NOTSUP;
+    lfsr_remove(&lfs, "coffee/tubruk////") => LFS_ERR_NOTSUP;
+    lfsr_remove(&lfs, "coffee/vietnamese/////") => LFS_ERR_NOTSUP;
+    lfsr_remove(&lfs, "coffee/thai//////") => LFS_ERR_NOTSUP;
+
+    // stat paths
+    lfsr_stat(&lfs, "espresso/espresso", &info) => LFS_ERR_NOENT;
+    lfsr_stat(&lfs, "espresso/americano", &info) => LFS_ERR_NOENT;
+    lfsr_stat(&lfs, "espresso/macchiato", &info) => LFS_ERR_NOENT;
+    lfsr_stat(&lfs, "espresso/latte", &info) => LFS_ERR_NOENT;
+    lfsr_stat(&lfs, "espresso/cappuccino", &info) => LFS_ERR_NOENT;
+    lfsr_stat(&lfs, "espresso/mocha", &info) => LFS_ERR_NOENT;
+
+    lfsr_stat(&lfs, "coffee/drip", &info) => 0;
+    assert(strcmp(info.name, "drip") == 0);
+    assert(info.type == 0x13);
+    lfsr_stat(&lfs, "coffee/coldbrew", &info) => 0;
+    assert(strcmp(info.name, "coldbrew") == 0);
+    assert(info.type == 0x13);
+    lfsr_stat(&lfs, "coffee/turkish", &info) => 0;
+    assert(strcmp(info.name, "turkish") == 0);
+    assert(info.type == 0x13);
+    lfsr_stat(&lfs, "coffee/tubruk", &info) => 0;
+    assert(strcmp(info.name, "tubruk") == 0);
+    assert(info.type == 0x13);
+    lfsr_stat(&lfs, "coffee/vietnamese", &info) => 0;
+    assert(strcmp(info.name, "vietnamese") == 0);
+    assert(info.type == 0x13);
+    lfsr_stat(&lfs, "coffee/thai", &info) => 0;
+    assert(strcmp(info.name, "thai") == 0);
+    assert(info.type == 0x13);
+
+    lfsr_unmount(&lfs) => 0;
+'''
+
+# notsup tests with trailing dots
+[cases.test_paths_notsup_trailing_dots]
+in = 'lfs.c'
+code = '''
+    lfs_t lfs;
+    lfsr_format(&lfs, LFS_F_RDWR, CFG) => 0;
+    lfsr_mount(&lfs, LFS_F_RDWR, CFG) => 0;
+
+    // create paths
+    lfsr_mkdir(&lfs, "coffee") => 0;
+    // create paths with unknown file types
+    const char *path;
+    lfsr_mdir_t mdir;
+    lfsr_did_t did;
+    path = "coffee/drip";
+    lfsr_mtree_pathlookup(&lfs, &path,
+            &mdir, NULL, &did) => LFS_ERR_NOENT;
+    lfsr_mdir_commit(&lfs, &mdir, LFSR_RATS(
+            LFSR_RAT_NAME(
+                LFSR_TAG_NAME + 0x13, +1,
+                did, path, lfsr_path_namelen(path)))) => 0;
+    path = "coffee/coldbrew";
+    lfsr_mtree_pathlookup(&lfs, &path,
+            &mdir, NULL, &did) => LFS_ERR_NOENT;
+    lfsr_mdir_commit(&lfs, &mdir, LFSR_RATS(
+            LFSR_RAT_NAME(
+                LFSR_TAG_NAME + 0x13, +1,
+                did, path, lfsr_path_namelen(path)))) => 0;
+    path = "coffee/turkish";
+    lfsr_mtree_pathlookup(&lfs, &path,
+            &mdir, NULL, &did) => LFS_ERR_NOENT;
+    lfsr_mdir_commit(&lfs, &mdir, LFSR_RATS(
+            LFSR_RAT_NAME(
+                LFSR_TAG_NAME + 0x13, +1,
+                did, path, lfsr_path_namelen(path)))) => 0;
+    path = "coffee/tubruk";
+    lfsr_mtree_pathlookup(&lfs, &path,
+            &mdir, NULL, &did) => LFS_ERR_NOENT;
+    lfsr_mdir_commit(&lfs, &mdir, LFSR_RATS(
+            LFSR_RAT_NAME(
+                LFSR_TAG_NAME + 0x13, +1,
+                did, path, lfsr_path_namelen(path)))) => 0;
+    path = "coffee/vietnamese";
+    lfsr_mtree_pathlookup(&lfs, &path,
+            &mdir, NULL, &did) => LFS_ERR_NOENT;
+    lfsr_mdir_commit(&lfs, &mdir, LFSR_RATS(
+            LFSR_RAT_NAME(
+                LFSR_TAG_NAME + 0x13, +1,
+                did, path, lfsr_path_namelen(path)))) => 0;
+    path = "coffee/thai";
+    lfsr_mtree_pathlookup(&lfs, &path,
+            &mdir, NULL, &did) => LFS_ERR_NOENT;
+    lfsr_mdir_commit(&lfs, &mdir, LFSR_RATS(
+            LFSR_RAT_NAME(
+                LFSR_TAG_NAME + 0x13, +1,
+                did, path, lfsr_path_namelen(path)))) => 0;
+
+    // stat paths
+    struct lfs_info info;
+    lfsr_stat(&lfs, "coffee/drip/./././././.", &info) => LFS_ERR_NOTSUP;
+    lfsr_stat(&lfs, "coffee/coldbrew/././././.", &info) => LFS_ERR_NOTSUP;
+    lfsr_stat(&lfs, "coffee/turkish/./././.", &info) => LFS_ERR_NOTSUP;
+    lfsr_stat(&lfs, "coffee/tubruk/././.", &info) => LFS_ERR_NOTSUP;
+    lfsr_stat(&lfs, "coffee/vietnamese/./.", &info) => LFS_ERR_NOTSUP;
+    lfsr_stat(&lfs, "coffee/thai/.", &info) => LFS_ERR_NOTSUP;
+
+    // file open paths, only works on files!
+    lfsr_file_t file;
+    lfsr_file_open(&lfs, &file, "coffee/drip/.",
+            LFS_O_RDONLY) => LFS_ERR_NOTSUP;
+    lfsr_file_open(&lfs, &file, "coffee/coldbrew/./.",
+            LFS_O_RDONLY) => LFS_ERR_NOTSUP;
+    lfsr_file_open(&lfs, &file, "coffee/turkish/././.",
+            LFS_O_RDONLY) => LFS_ERR_NOTSUP;
+    lfsr_file_open(&lfs, &file, "coffee/tubruk/./././.",
+            LFS_O_RDONLY) => LFS_ERR_NOTSUP;
+    lfsr_file_open(&lfs, &file, "coffee/vietnamese/././././.",
+            LFS_O_RDONLY) => LFS_ERR_NOTSUP;
+    lfsr_file_open(&lfs, &file, "coffee/thai/./././././.",
+            LFS_O_RDONLY) => LFS_ERR_NOTSUP;
+
+    lfsr_file_open(&lfs, &file, "coffee/drip/.",
+            LFS_O_WRONLY | LFS_O_CREAT) => LFS_ERR_NOTSUP;
+    lfsr_file_open(&lfs, &file, "coffee/coldbrew/./.",
+            LFS_O_WRONLY | LFS_O_CREAT) => LFS_ERR_NOTSUP;
+    lfsr_file_open(&lfs, &file, "coffee/turkish/././.",
+            LFS_O_WRONLY | LFS_O_CREAT) => LFS_ERR_NOTSUP;
+    lfsr_file_open(&lfs, &file, "coffee/tubruk/./././.",
+            LFS_O_WRONLY | LFS_O_CREAT) => LFS_ERR_NOTSUP;
+    lfsr_file_open(&lfs, &file, "coffee/vietnamese/././././.",
+            LFS_O_WRONLY | LFS_O_CREAT) => LFS_ERR_NOTSUP;
+    lfsr_file_open(&lfs, &file, "coffee/thai/./././././.",
+            LFS_O_WRONLY | LFS_O_CREAT) => LFS_ERR_NOTSUP;
+
+    lfsr_file_open(&lfs, &file, "coffee/drip/.",
+            LFS_O_WRONLY | LFS_O_CREAT | LFS_O_EXCL) => LFS_ERR_NOTSUP;
+    lfsr_file_open(&lfs, &file, "coffee/coldbrew/./.",
+            LFS_O_WRONLY | LFS_O_CREAT | LFS_O_EXCL) => LFS_ERR_NOTSUP;
+    lfsr_file_open(&lfs, &file, "coffee/turkish/././.",
+            LFS_O_WRONLY | LFS_O_CREAT | LFS_O_EXCL) => LFS_ERR_NOTSUP;
+    lfsr_file_open(&lfs, &file, "coffee/tubruk/./././.",
+            LFS_O_WRONLY | LFS_O_CREAT | LFS_O_EXCL) => LFS_ERR_NOTSUP;
+    lfsr_file_open(&lfs, &file, "coffee/vietnamese/././././.",
+            LFS_O_WRONLY | LFS_O_CREAT | LFS_O_EXCL) => LFS_ERR_NOTSUP;
+    lfsr_file_open(&lfs, &file, "coffee/thai/./././././.",
+            LFS_O_WRONLY | LFS_O_CREAT | LFS_O_EXCL) => LFS_ERR_NOTSUP;
+
+    // dir open paths, only works on dirs!
+    lfsr_dir_t dir;
+    lfsr_dir_open(&lfs, &dir, "coffee/drip/.") => LFS_ERR_NOTSUP;
+    lfsr_dir_open(&lfs, &dir, "coffee/coldbrew/./.") => LFS_ERR_NOTSUP;
+    lfsr_dir_open(&lfs, &dir, "coffee/turkish/././.") => LFS_ERR_NOTSUP;
+    lfsr_dir_open(&lfs, &dir, "coffee/tubruk/./././.") => LFS_ERR_NOTSUP;
+    lfsr_dir_open(&lfs, &dir, "coffee/vietnamese/././././.") => LFS_ERR_NOTSUP;
+    lfsr_dir_open(&lfs, &dir, "coffee/thai/./././././.") => LFS_ERR_NOTSUP;
+
+    // rename paths
+    lfsr_mkdir(&lfs, "espresso") => 0;
+    // bad source
+    lfsr_rename(&lfs,
+            "coffee/drip/./././././.",
+            "espresso/espresso") => LFS_ERR_NOTSUP;
+    lfsr_rename(&lfs,
+            "coffee/coldbrew/././././.",
+            "espresso/americano") => LFS_ERR_NOTSUP;
+    lfsr_rename(&lfs,
+            "coffee/turkish/./././.",
+            "espresso/macchiato") => LFS_ERR_NOTSUP;
+    lfsr_rename(&lfs,
+            "coffee/tubruk/././.",
+            "espresso/latte") => LFS_ERR_NOTSUP;
+    lfsr_rename(&lfs,
+            "coffee/vietnamese/./.",
+            "espresso/cappuccino") => LFS_ERR_NOTSUP;
+    lfsr_rename(&lfs,
+            "coffee/thai/.",
+            "espresso/mocha") => LFS_ERR_NOTSUP;
+
+    // bad destination
+    lfsr_rename(&lfs,
+            "coffee/drip",
+            "espresso/espresso/.") => LFS_ERR_NOTSUP;
+    lfsr_rename(&lfs,
+            "coffee/coldbrew",
+            "espresso/americano/./.") => LFS_ERR_NOTSUP;
+    lfsr_rename(&lfs,
+            "coffee/turkish",
+            "espresso/macchiato/././.") => LFS_ERR_NOTSUP;
+    lfsr_rename(&lfs,
+            "coffee/tubruk",
+            "espresso/latte/./././.") => LFS_ERR_NOTSUP;
+    lfsr_rename(&lfs,
+            "coffee/vietnamese",
+            "espresso/cappuccino/././././.") => LFS_ERR_NOTSUP;
+    lfsr_rename(&lfs,
+            "coffee/thai",
+            "espresso/mocha/./././././.") => LFS_ERR_NOTSUP;
+
+    // bad source and bad destination
+    lfsr_rename(&lfs,
+            "coffee/drip/./././././.",
+            "espresso/espresso/.") => LFS_ERR_NOTSUP;
+    lfsr_rename(&lfs,
+            "coffee/coldbrew/././././.",
+            "espresso/americano/./.") => LFS_ERR_NOTSUP;
+    lfsr_rename(&lfs,
+            "coffee/turkish/./././.",
+            "espresso/macchiato/././.") => LFS_ERR_NOTSUP;
+    lfsr_rename(&lfs,
+            "coffee/tubruk/././.",
+            "espresso/latte/./././.") => LFS_ERR_NOTSUP;
+    lfsr_rename(&lfs,
+            "coffee/vietnamese/./.",
+            "espresso/cappuccino/././././.") => LFS_ERR_NOTSUP;
+    lfsr_rename(&lfs,
+            "coffee/thai/.",
+            "espresso/mocha/./././././.") => LFS_ERR_NOTSUP;
+
+    // here's a weird one, what happens if our rename is also a noop?
+    lfsr_rename(&lfs,
+            "coffee/drip/./././././.",
+            "coffee/drip/./././././.") => LFS_ERR_NOTSUP;
+    lfsr_rename(&lfs,
+            "coffee/coldbrew/././././.",
+            "coffee/coldbrew/././././.") => LFS_ERR_NOTSUP;
+    lfsr_rename(&lfs,
+            "coffee/turkish/./././.",
+            "coffee/turkish/./././.") => LFS_ERR_NOTSUP;
+    lfsr_rename(&lfs,
+            "coffee/tubruk/././.",
+            "coffee/tubruk/././.") => LFS_ERR_NOTSUP;
+    lfsr_rename(&lfs,
+            "coffee/vietnamese/./.",
+            "coffee/vietnamese/./.") => LFS_ERR_NOTSUP;
+    lfsr_rename(&lfs,
+            "coffee/thai/.",
+            "coffee/thai/.") => LFS_ERR_NOTSUP;
+
+    // remove paths
+    lfsr_remove(&lfs, "coffee/drip/.") => LFS_ERR_NOTSUP;
+    lfsr_remove(&lfs, "coffee/coldbrew/./.") => LFS_ERR_NOTSUP;
+    lfsr_remove(&lfs, "coffee/turkish/././.") => LFS_ERR_NOTSUP;
+    lfsr_remove(&lfs, "coffee/tubruk/./././.") => LFS_ERR_NOTSUP;
+    lfsr_remove(&lfs, "coffee/vietnamese/././././.") => LFS_ERR_NOTSUP;
+    lfsr_remove(&lfs, "coffee/thai/./././././.") => LFS_ERR_NOTSUP;
+
+    // stat paths
+    lfsr_stat(&lfs, "espresso/espresso", &info) => LFS_ERR_NOENT;
+    lfsr_stat(&lfs, "espresso/americano", &info) => LFS_ERR_NOENT;
+    lfsr_stat(&lfs, "espresso/macchiato", &info) => LFS_ERR_NOENT;
+    lfsr_stat(&lfs, "espresso/latte", &info) => LFS_ERR_NOENT;
+    lfsr_stat(&lfs, "espresso/cappuccino", &info) => LFS_ERR_NOENT;
+    lfsr_stat(&lfs, "espresso/mocha", &info) => LFS_ERR_NOENT;
+
+    lfsr_stat(&lfs, "coffee/drip", &info) => 0;
+    assert(strcmp(info.name, "drip") == 0);
+    assert(info.type == 0x13);
+    lfsr_stat(&lfs, "coffee/coldbrew", &info) => 0;
+    assert(strcmp(info.name, "coldbrew") == 0);
+    assert(info.type == 0x13);
+    lfsr_stat(&lfs, "coffee/turkish", &info) => 0;
+    assert(strcmp(info.name, "turkish") == 0);
+    assert(info.type == 0x13);
+    lfsr_stat(&lfs, "coffee/tubruk", &info) => 0;
+    assert(strcmp(info.name, "tubruk") == 0);
+    assert(info.type == 0x13);
+    lfsr_stat(&lfs, "coffee/vietnamese", &info) => 0;
+    assert(strcmp(info.name, "vietnamese") == 0);
+    assert(info.type == 0x13);
+    lfsr_stat(&lfs, "coffee/thai", &info) => 0;
+    assert(strcmp(info.name, "thai") == 0);
+    assert(info.type == 0x13);
+
+    lfsr_unmount(&lfs) => 0;
+'''
+
+# notsup tests with trailing dotdots
+[cases.test_paths_notsup_trailing_dotdots]
+in = 'lfs.c'
+code = '''
+    lfs_t lfs;
+    lfsr_format(&lfs, LFS_F_RDWR, CFG) => 0;
+    lfsr_mount(&lfs, LFS_F_RDWR, CFG) => 0;
+
+    // create paths
+    lfsr_mkdir(&lfs, "coffee") => 0;
+    // create paths with unknown file types
+    const char *path;
+    lfsr_mdir_t mdir;
+    lfsr_did_t did;
+    path = "coffee/drip";
+    lfsr_mtree_pathlookup(&lfs, &path,
+            &mdir, NULL, &did) => LFS_ERR_NOENT;
+    lfsr_mdir_commit(&lfs, &mdir, LFSR_RATS(
+            LFSR_RAT_NAME(
+                LFSR_TAG_NAME + 0x13, +1,
+                did, path, lfsr_path_namelen(path)))) => 0;
+    path = "coffee/coldbrew";
+    lfsr_mtree_pathlookup(&lfs, &path,
+            &mdir, NULL, &did) => LFS_ERR_NOENT;
+    lfsr_mdir_commit(&lfs, &mdir, LFSR_RATS(
+            LFSR_RAT_NAME(
+                LFSR_TAG_NAME + 0x13, +1,
+                did, path, lfsr_path_namelen(path)))) => 0;
+    path = "coffee/turkish";
+    lfsr_mtree_pathlookup(&lfs, &path,
+            &mdir, NULL, &did) => LFS_ERR_NOENT;
+    lfsr_mdir_commit(&lfs, &mdir, LFSR_RATS(
+            LFSR_RAT_NAME(
+                LFSR_TAG_NAME + 0x13, +1,
+                did, path, lfsr_path_namelen(path)))) => 0;
+    path = "coffee/tubruk";
+    lfsr_mtree_pathlookup(&lfs, &path,
+            &mdir, NULL, &did) => LFS_ERR_NOENT;
+    lfsr_mdir_commit(&lfs, &mdir, LFSR_RATS(
+            LFSR_RAT_NAME(
+                LFSR_TAG_NAME + 0x13, +1,
+                did, path, lfsr_path_namelen(path)))) => 0;
+    path = "coffee/vietnamese";
+    lfsr_mtree_pathlookup(&lfs, &path,
+            &mdir, NULL, &did) => LFS_ERR_NOENT;
+    lfsr_mdir_commit(&lfs, &mdir, LFSR_RATS(
+            LFSR_RAT_NAME(
+                LFSR_TAG_NAME + 0x13, +1,
+                did, path, lfsr_path_namelen(path)))) => 0;
+    path = "coffee/thai";
+    lfsr_mtree_pathlookup(&lfs, &path,
+            &mdir, NULL, &did) => LFS_ERR_NOENT;
+    lfsr_mdir_commit(&lfs, &mdir, LFSR_RATS(
+            LFSR_RAT_NAME(
+                LFSR_TAG_NAME + 0x13, +1,
+                did, path, lfsr_path_namelen(path)))) => 0;
+
+    // stat paths
+    struct lfs_info info;
+    lfsr_stat(&lfs, "coffee/drip/../../../../../..", &info) => LFS_ERR_INVAL;
+    lfsr_stat(&lfs, "coffee/coldbrew/../../../../..", &info) => LFS_ERR_INVAL;
+    lfsr_stat(&lfs, "coffee/turkish/../../../..", &info) => LFS_ERR_INVAL;
+    lfsr_stat(&lfs, "coffee/tubruk/../../..", &info) => LFS_ERR_INVAL;
+    lfsr_stat(&lfs, "coffee/vietnamese/../..", &info) => 0;
+    assert(strcmp(info.name, "/") == 0);
+    assert(info.type == LFS_TYPE_DIR);
+    lfsr_stat(&lfs, "coffee/thai/..", &info) => 0;
+    assert(strcmp(info.name, "coffee") == 0);
+    assert(info.type == LFS_TYPE_DIR);
+
+    // file open paths, only works on files!
+    lfsr_file_t file;
+    lfsr_file_open(&lfs, &file, "coffee/drip/..",
+            LFS_O_RDONLY) => LFS_ERR_ISDIR;
+    lfsr_file_open(&lfs, &file, "coffee/coldbrew/../..",
+            LFS_O_RDONLY) => LFS_ERR_ISDIR;
+    lfsr_file_open(&lfs, &file, "coffee/turkish/../../..",
+            LFS_O_RDONLY) => LFS_ERR_INVAL;
+    lfsr_file_open(&lfs, &file, "coffee/tubruk/../../../..",
+            LFS_O_RDONLY) => LFS_ERR_INVAL;
+    lfsr_file_open(&lfs, &file, "coffee/vietnamese/../../../../..",
+            LFS_O_RDONLY) => LFS_ERR_INVAL;
+    lfsr_file_open(&lfs, &file, "coffee/thai/../../../../../..",
+            LFS_O_RDONLY) => LFS_ERR_INVAL;
+
+    // dir open paths, only works on dirs!
+    lfsr_dir_t dir;
+    lfsr_dir_open(&lfs, &dir, "coffee/drip/..") => 0;
+    lfsr_dir_close(&lfs, &dir) => 0;
+    lfsr_dir_open(&lfs, &dir, "coffee/coldbrew/../..") => 0;
+    lfsr_dir_close(&lfs, &dir) => 0;
+    lfsr_dir_open(&lfs, &dir, "coffee/turkish/../../..") => LFS_ERR_INVAL;
+    lfsr_dir_open(&lfs, &dir, "coffee/tubruk/../../../..") => LFS_ERR_INVAL;
+    lfsr_dir_open(&lfs, &dir, "coffee/vietnamese/../../../../..") => LFS_ERR_INVAL;
+    lfsr_dir_open(&lfs, &dir, "coffee/thai/../../../../../..") => LFS_ERR_INVAL;
+
+    // rename paths
+    lfsr_mkdir(&lfs, "espresso") => 0;
+    // bad source
+    lfsr_rename(&lfs,
+            "coffee/drip/../../../../../..",
+            "espresso/espresso") => LFS_ERR_INVAL;
+    lfsr_rename(&lfs,
+            "coffee/coldbrew/../../../../..",
+            "espresso/americano") => LFS_ERR_INVAL;
+    lfsr_rename(&lfs,
+            "coffee/turkish/../../../..",
+            "espresso/macchiato") => LFS_ERR_INVAL;
+    lfsr_rename(&lfs,
+            "coffee/tubruk/../../..",
+            "espresso/latte") => LFS_ERR_INVAL;
+    lfsr_rename(&lfs,
+            "coffee/vietnamese/../..",
+            "espresso/cappuccino") => LFS_ERR_INVAL;
+    // this one works
+    lfsr_rename(&lfs,
+            "coffee/thai/..",
+            "espresso/mocha") => 0;
+    lfsr_rename(&lfs,
+            "espresso/mocha",
+            "coffee") => 0;
+
+    // bad destination
+    lfsr_rename(&lfs,
+            "coffee/drip",
+            "espresso/espresso/..") => LFS_ERR_NOTSUP;
+    lfsr_rename(&lfs,
+            "coffee/coldbrew",
+            "espresso/americano/../..") => LFS_ERR_NOTSUP;
+    lfsr_rename(&lfs,
+            "coffee/turkish",
+            "espresso/macchiato/../../..") => LFS_ERR_NOTSUP;
+    lfsr_rename(&lfs,
+            "coffee/tubruk",
+            "espresso/latte/../../../..") => LFS_ERR_NOTSUP;
+    lfsr_rename(&lfs,
+            "coffee/vietnamese",
+            "espresso/cappuccino/../../../../..") => LFS_ERR_NOTSUP;
+    lfsr_rename(&lfs,
+            "coffee/thai",
+            "espresso/mocha/../../../../../..") => LFS_ERR_NOTSUP;
+
+    // bad source and bad destination
+    lfsr_rename(&lfs,
+            "coffee/drip/../../../../../..",
+            "espresso/espresso/..") => LFS_ERR_INVAL;
+    lfsr_rename(&lfs,
+            "coffee/coldbrew/../../../../..",
+            "espresso/americano/../..") => LFS_ERR_INVAL;
+    lfsr_rename(&lfs,
+            "coffee/turkish/../../../..",
+            "espresso/macchiato/../../..") => LFS_ERR_INVAL;
+    lfsr_rename(&lfs,
+            "coffee/tubruk/../../..",
+            "espresso/latte/../../../..") => LFS_ERR_INVAL;
+    lfsr_rename(&lfs,
+            "coffee/vietnamese/../..",
+            "espresso/cappuccino/../../../../..") => LFS_ERR_INVAL;
+    lfsr_rename(&lfs,
+            "coffee/thai/..",
+            "espresso/mocha/../../../../../..") => LFS_ERR_INVAL;
+
+    // here's a weird one, what happens if our rename is also a noop?
+    lfsr_rename(&lfs,
+            "coffee/drip/../../../../../..",
+            "coffee/drip/../../../../../..") => LFS_ERR_INVAL;
+    lfsr_rename(&lfs,
+            "coffee/coldbrew/../../../../..",
+            "coffee/coldbrew/../../../../..") => LFS_ERR_INVAL;
+    lfsr_rename(&lfs,
+            "coffee/turkish/../../../..",
+            "coffee/turkish/../../../..") => LFS_ERR_INVAL;
+    lfsr_rename(&lfs,
+            "coffee/tubruk/../../..",
+            "coffee/tubruk/../../..") => LFS_ERR_INVAL;
+    lfsr_rename(&lfs,
+            "coffee/vietnamese/../..",
+            "coffee/vietnamese/../..") => LFS_ERR_INVAL;
+    lfsr_rename(&lfs,
+            "coffee/thai/..",
+            "coffee/thai/..") => 0;
+
+    // remove paths
+    lfsr_remove(&lfs, "coffee/drip/..") => LFS_ERR_NOTEMPTY;
+    lfsr_remove(&lfs, "coffee/coldbrew/../..") => LFS_ERR_INVAL;
+    lfsr_remove(&lfs, "coffee/turkish/../../..") => LFS_ERR_INVAL;
+    lfsr_remove(&lfs, "coffee/tubruk/../../../..") => LFS_ERR_INVAL;
+    lfsr_remove(&lfs, "coffee/vietnamese/../../../../..") => LFS_ERR_INVAL;
+    lfsr_remove(&lfs, "coffee/thai/../../../../../..") => LFS_ERR_INVAL;
+
+    // stat paths
+    lfsr_stat(&lfs, "espresso/espresso", &info) => LFS_ERR_NOENT;
+    lfsr_stat(&lfs, "espresso/americano", &info) => LFS_ERR_NOENT;
+    lfsr_stat(&lfs, "espresso/macchiato", &info) => LFS_ERR_NOENT;
+    lfsr_stat(&lfs, "espresso/latte", &info) => LFS_ERR_NOENT;
+    lfsr_stat(&lfs, "espresso/cappuccino", &info) => LFS_ERR_NOENT;
+    lfsr_stat(&lfs, "espresso/mocha", &info) => LFS_ERR_NOENT;
+    lfsr_stat(&lfs, "coffee/drip", &info) => 0;
+
+    assert(strcmp(info.name, "drip") == 0);
+    assert(info.type == 0x13);
+    lfsr_stat(&lfs, "coffee/coldbrew", &info) => 0;
+    assert(strcmp(info.name, "coldbrew") == 0);
+    assert(info.type == 0x13);
+    lfsr_stat(&lfs, "coffee/turkish", &info) => 0;
+    assert(strcmp(info.name, "turkish") == 0);
+    assert(info.type == 0x13);
+    lfsr_stat(&lfs, "coffee/tubruk", &info) => 0;
+    assert(strcmp(info.name, "tubruk") == 0);
+    assert(info.type == 0x13);
+    lfsr_stat(&lfs, "coffee/vietnamese", &info) => 0;
+    assert(strcmp(info.name, "vietnamese") == 0);
+    assert(info.type == 0x13);
+    lfsr_stat(&lfs, "coffee/thai", &info) => 0;
+    assert(strcmp(info.name, "thai") == 0);
+    assert(info.type == 0x13);
+
+    lfsr_unmount(&lfs) => 0;
+'''
+
 # test an empty path, this should error
 [cases.test_paths_empty]
 defines.DIR = [false, true]