unix: Change to use new generic VFS sub-system in coverage build.

This patch includes a new module "uos_vfs" which can be used for testing
the VFS syb-system.

unix/Makefile

@@ -143,6 +143,7 @@ SRC_C = \
 	file.c \
 	modmachine.c \
 	modos.c \
+	moduos_vfs.c \
 	modtime.c \
 	moduselect.c \
 	alloc.c \

unix/moduos_vfs.c

+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2017 Damien P. George
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include <stdint.h>
+#include <string.h>
+
+#include "extmod/vfs.h"
+#include "extmod/vfs_fat.h"
+
+#if MICROPY_VFS
+
+STATIC const mp_rom_map_elem_t uos_vfs_module_globals_table[] = {
+    { MP_ROM_QSTR(MP_QSTR___name__), MP_ROM_QSTR(MP_QSTR_uos_vfs) },
+    { MP_ROM_QSTR(MP_QSTR_sep), MP_ROM_QSTR(MP_QSTR__slash_) },
+
+    { MP_ROM_QSTR(MP_QSTR_mount), MP_ROM_PTR(&mp_vfs_mount_obj) },
+    { MP_ROM_QSTR(MP_QSTR_umount), MP_ROM_PTR(&mp_vfs_umount_obj) },
+    { MP_ROM_QSTR(MP_QSTR_vfs_open), MP_ROM_PTR(&mp_vfs_open_obj) },
+
+    { MP_ROM_QSTR(MP_QSTR_chdir), MP_ROM_PTR(&mp_vfs_chdir_obj) },
+    { MP_ROM_QSTR(MP_QSTR_getcwd), MP_ROM_PTR(&mp_vfs_getcwd_obj) },
+    { MP_ROM_QSTR(MP_QSTR_listdir), MP_ROM_PTR(&mp_vfs_listdir_obj) },
+    { MP_ROM_QSTR(MP_QSTR_mkdir), MP_ROM_PTR(&mp_vfs_mkdir_obj) },
+    { MP_ROM_QSTR(MP_QSTR_remove), MP_ROM_PTR(&mp_vfs_remove_obj) },
+    { MP_ROM_QSTR(MP_QSTR_rename),MP_ROM_PTR(&mp_vfs_rename_obj) },
+    { MP_ROM_QSTR(MP_QSTR_rmdir), MP_ROM_PTR(&mp_vfs_rmdir_obj) },
+    { MP_ROM_QSTR(MP_QSTR_stat), MP_ROM_PTR(&mp_vfs_stat_obj) },
+    { MP_ROM_QSTR(MP_QSTR_statvfs), MP_ROM_PTR(&mp_vfs_statvfs_obj) },
+    { MP_ROM_QSTR(MP_QSTR_unlink), MP_ROM_PTR(&mp_vfs_remove_obj) }, // unlink aliases to remove
+
+    #if MICROPY_VFS_FAT
+    { MP_ROM_QSTR(MP_QSTR_VfsFat), MP_ROM_PTR(&mp_fat_vfs_type) },
+    #endif
+};
+
+STATIC MP_DEFINE_CONST_DICT(uos_vfs_module_globals, uos_vfs_module_globals_table);
+
+const mp_obj_module_t mp_module_uos_vfs = {
+    .base = { &mp_type_module },
+    .globals = (mp_obj_dict_t*)&uos_vfs_module_globals,
+};
+
+#endif // MICROPY_VFS

unix/mpconfigport.h

@@ -164,6 +164,7 @@
 
 extern const struct _mp_obj_module_t mp_module_machine;
 extern const struct _mp_obj_module_t mp_module_os;
+extern const struct _mp_obj_module_t mp_module_uos_vfs;
 extern const struct _mp_obj_module_t mp_module_uselect;
 extern const struct _mp_obj_module_t mp_module_time;
 extern const struct _mp_obj_module_t mp_module_termios;
@@ -171,6 +172,11 @@ extern const struct _mp_obj_module_t mp_module_socket;
 extern const struct _mp_obj_module_t mp_module_ffi;
 extern const struct _mp_obj_module_t mp_module_jni;
 
+#if MICROPY_PY_UOS_VFS
+#define MICROPY_PY_UOS_VFS_DEF { MP_ROM_QSTR(MP_QSTR_uos_vfs), MP_ROM_PTR(&mp_module_uos_vfs) },
+#else
+#define MICROPY_PY_UOS_VFS_DEF
+#endif
 #if MICROPY_PY_FFI
 #define MICROPY_PY_FFI_DEF { MP_ROM_QSTR(MP_QSTR_ffi), MP_ROM_PTR(&mp_module_ffi) },
 #else
@@ -209,6 +215,7 @@ extern const struct _mp_obj_module_t mp_module_jni;
     MICROPY_PY_SOCKET_DEF \
     { MP_ROM_QSTR(MP_QSTR_umachine), MP_ROM_PTR(&mp_module_machine) }, \
     { MP_ROM_QSTR(MP_QSTR_uos), MP_ROM_PTR(&mp_module_os) }, \
+    MICROPY_PY_UOS_VFS_DEF \
     MICROPY_PY_USELECT_DEF \
     MICROPY_PY_TERMIOS_DEF \
 

unix/mpconfigport_coverage.h

@@ -27,14 +27,15 @@
 // Default unix config while intended to be comprehensive, may still not enable
 // all the features, this config should enable more (testable) options.
 
+#define MICROPY_VFS                    (1)
+#define MICROPY_PY_UOS_VFS             (1)
+
 #include <mpconfigport.h>
 
 #define MICROPY_PY_BUILTINS_HELP       (1)
 #define MICROPY_PY_BUILTINS_HELP_MODULES (1)
 #define MICROPY_PY_URANDOM_EXTRA_FUNCS (1)
 #define MICROPY_PY_IO_BUFFEREDWRITER (1)
-#undef MICROPY_FSUSERMOUNT
 #undef MICROPY_VFS_FAT
-#define MICROPY_FSUSERMOUNT            (1)
 #define MICROPY_VFS_FAT                (1)
 #define MICROPY_PY_FRAMEBUF            (1)