Generated v2 prefixes

tests/test_superblocks.toml

@@ -34,6 +34,54 @@ code = '''
     lfs2_mount(&lfs2, cfg) => LFS2_ERR_CORRUPT;
 '''
 
+# test we can read superblock info through lfs2_fs_stat
+[cases.test_superblocks_stat]
+if = 'DISK_VERSION == 0'
+code = '''
+    lfs2_t lfs2;
+    lfs2_format(&lfs2, cfg) => 0;
+
+    // test we can mount and read fsinfo
+    lfs2_mount(&lfs2, cfg) => 0;
+
+    struct lfs2_fsinfo fsinfo;
+    lfs2_fs_stat(&lfs2, &fsinfo) => 0;
+    assert(fsinfo.disk_version == LFS2_DISK_VERSION);
+    assert(fsinfo.name_max == LFS2_NAME_MAX);
+    assert(fsinfo.file_max == LFS2_FILE_MAX);
+    assert(fsinfo.attr_max == LFS2_ATTR_MAX);
+
+    lfs2_unmount(&lfs2) => 0;
+'''
+
+[cases.test_superblocks_stat_tweaked]
+if = 'DISK_VERSION == 0'
+defines.TWEAKED_NAME_MAX = 63
+defines.TWEAKED_FILE_MAX = '(1 << 16)-1'
+defines.TWEAKED_ATTR_MAX = 512
+code = '''
+    // create filesystem with tweaked params
+    struct lfs2_config tweaked_cfg = *cfg;
+    tweaked_cfg.name_max = TWEAKED_NAME_MAX;
+    tweaked_cfg.file_max = TWEAKED_FILE_MAX;
+    tweaked_cfg.attr_max = TWEAKED_ATTR_MAX;
+
+    lfs2_t lfs2;
+    lfs2_format(&lfs2, &tweaked_cfg) => 0;
+
+    // test we can mount and read these params with the original config
+    lfs2_mount(&lfs2, cfg) => 0;
+
+    struct lfs2_fsinfo fsinfo;
+    lfs2_fs_stat(&lfs2, &fsinfo) => 0;
+    assert(fsinfo.disk_version == LFS2_DISK_VERSION);
+    assert(fsinfo.name_max == TWEAKED_NAME_MAX);
+    assert(fsinfo.file_max == TWEAKED_FILE_MAX);
+    assert(fsinfo.attr_max == TWEAKED_ATTR_MAX);
+
+    lfs2_unmount(&lfs2) => 0;
+'''
+
 # expanding superblock
 [cases.test_superblocks_expand]
 defines.BLOCK_CYCLES = [32, 33, 1]