2017-01-27 04:10:09 +00:00
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/*
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* This file is part of the MicroPython project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2017 Damien P. George
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include <stdint.h>
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#include <string.h>
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#include "py/runtime.h"
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#include "py/objstr.h"
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#include "py/mperrno.h"
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#include "extmod/vfs.h"
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#if MICROPY_VFS
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2017-01-29 08:20:27 +00:00
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#if MICROPY_VFS_FAT
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#include "extmod/vfs_fat.h"
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#endif
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2019-10-29 06:16:30 +00:00
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#if MICROPY_VFS_LFS1 || MICROPY_VFS_LFS2
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#include "extmod/vfs_lfs.h"
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#endif
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2018-07-03 04:02:12 +01:00
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#if MICROPY_VFS_POSIX
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#include "extmod/vfs_posix.h"
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#endif
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2017-10-27 08:01:25 +01:00
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// For mp_vfs_proxy_call, the maximum number of additional args that can be passed.
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// A fixed maximum size is used to avoid the need for a costly variable array.
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#define PROXY_MAX_ARGS (2)
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2017-01-27 04:10:09 +00:00
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// path is the path to lookup and *path_out holds the path within the VFS
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// object (starts with / if an absolute path).
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2017-01-29 04:14:15 +00:00
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// Returns MP_VFS_ROOT for root dir (and then path_out is undefined) and
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// MP_VFS_NONE for path not found.
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mp_vfs_mount_t *mp_vfs_lookup_path(const char *path, const char **path_out) {
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2017-03-13 10:37:21 +00:00
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if (*path == '/' || MP_STATE_VM(vfs_cur) == MP_VFS_ROOT) {
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// an absolute path, or the current volume is root, so search root dir
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bool is_abs = 0;
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if (*path == '/') {
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++path;
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is_abs = 1;
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2017-01-27 04:10:09 +00:00
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}
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2017-03-10 06:13:29 +00:00
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if (*path == '\0') {
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// path is "" or "/" so return virtual root
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return MP_VFS_ROOT;
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}
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2017-03-13 10:37:21 +00:00
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for (mp_vfs_mount_t *vfs = MP_STATE_VM(vfs_mount_table); vfs != NULL; vfs = vfs->next) {
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size_t len = vfs->len - 1;
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2017-03-10 06:13:29 +00:00
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if (len == 0) {
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*path_out = path - is_abs;
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return vfs;
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}
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2017-03-13 10:37:21 +00:00
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if (strncmp(path, vfs->str + 1, len) == 0) {
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if (path[len] == '/') {
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*path_out = path + len;
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return vfs;
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} else if (path[len] == '\0') {
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*path_out = "/";
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return vfs;
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}
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2017-01-27 04:10:09 +00:00
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}
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}
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2017-03-10 06:13:29 +00:00
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2020-09-22 06:05:00 +01:00
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// if we get here then there's nothing mounted on /, so the path doesn't exist
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return MP_VFS_NONE;
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2017-01-27 04:10:09 +00:00
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}
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2017-03-13 10:37:21 +00:00
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// a relative path within a mounted device
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*path_out = path;
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return MP_STATE_VM(vfs_cur);
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2017-01-27 04:10:09 +00:00
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}
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2017-01-29 04:14:15 +00:00
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// Version of mp_vfs_lookup_path that takes and returns uPy string objects.
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2017-01-27 11:40:15 +00:00
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STATIC mp_vfs_mount_t *lookup_path(mp_obj_t path_in, mp_obj_t *path_out) {
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2017-01-27 04:10:09 +00:00
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const char *path = mp_obj_str_get_str(path_in);
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const char *p_out;
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2017-01-29 04:14:15 +00:00
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mp_vfs_mount_t *vfs = mp_vfs_lookup_path(path, &p_out);
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if (vfs != MP_VFS_NONE && vfs != MP_VFS_ROOT) {
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2017-01-27 04:10:09 +00:00
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*path_out = mp_obj_new_str_of_type(mp_obj_get_type(path_in),
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(const byte *)p_out, strlen(p_out));
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}
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return vfs;
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}
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2017-01-27 11:40:15 +00:00
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STATIC mp_obj_t mp_vfs_proxy_call(mp_vfs_mount_t *vfs, qstr meth_name, size_t n_args, const mp_obj_t *args) {
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2017-10-27 08:01:25 +01:00
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assert(n_args <= PROXY_MAX_ARGS);
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2017-01-29 04:14:15 +00:00
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if (vfs == MP_VFS_NONE) {
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2017-01-27 04:10:09 +00:00
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// mount point not found
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mp_raise_OSError(MP_ENODEV);
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}
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2017-01-29 04:14:15 +00:00
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if (vfs == MP_VFS_ROOT) {
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2017-01-27 04:10:09 +00:00
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// can't do operation on root dir
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mp_raise_OSError(MP_EPERM);
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}
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2017-10-27 08:01:25 +01:00
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mp_obj_t meth[2 + PROXY_MAX_ARGS];
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2017-01-27 04:10:09 +00:00
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mp_load_method(vfs->obj, meth_name, meth);
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if (args != NULL) {
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memcpy(meth + 2, args, n_args * sizeof(*args));
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}
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return mp_call_method_n_kw(n_args, 0, meth);
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}
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mp_import_stat_t mp_vfs_import_stat(const char *path) {
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const char *path_out;
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2017-01-29 04:14:15 +00:00
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mp_vfs_mount_t *vfs = mp_vfs_lookup_path(path, &path_out);
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if (vfs == MP_VFS_NONE || vfs == MP_VFS_ROOT) {
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2017-01-27 04:10:09 +00:00
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return MP_IMPORT_STAT_NO_EXIST;
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}
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2018-06-06 04:12:23 +01:00
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2018-06-06 05:24:23 +01:00
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// If the mounted object has the VFS protocol, call its import_stat helper
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const mp_vfs_proto_t *proto = mp_obj_get_type(vfs->obj)->protocol;
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if (proto != NULL) {
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return proto->import_stat(MP_OBJ_TO_PTR(vfs->obj), path_out);
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2017-01-27 06:17:54 +00:00
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}
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2018-05-02 08:08:48 +01:00
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// delegate to vfs.stat() method
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mp_obj_t path_o = mp_obj_new_str(path_out, strlen(path_out));
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mp_obj_t stat;
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nlr_buf_t nlr;
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if (nlr_push(&nlr) == 0) {
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stat = mp_vfs_proxy_call(vfs, MP_QSTR_stat, 1, &path_o);
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nlr_pop();
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} else {
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// assume an exception means that the path is not found
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return MP_IMPORT_STAT_NO_EXIST;
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}
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mp_obj_t *items;
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mp_obj_get_array_fixed_n(stat, 10, &items);
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mp_int_t st_mode = mp_obj_get_int(items[0]);
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if (st_mode & MP_S_IFDIR) {
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return MP_IMPORT_STAT_DIR;
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} else {
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return MP_IMPORT_STAT_FILE;
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}
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2017-01-27 04:10:09 +00:00
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}
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2019-10-29 06:16:30 +00:00
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STATIC mp_obj_t mp_vfs_autodetect(mp_obj_t bdev_obj) {
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#if MICROPY_VFS_LFS1 || MICROPY_VFS_LFS2
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nlr_buf_t nlr;
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if (nlr_push(&nlr) == 0) {
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2021-01-28 02:09:44 +00:00
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// The superblock for littlefs is in both block 0 and 1, but block 0 may be erased
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// or partially written, so search both blocks 0 and 1 for the littlefs signature.
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2019-10-29 06:16:30 +00:00
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mp_vfs_blockdev_t blockdev;
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mp_vfs_blockdev_init(&blockdev, bdev_obj);
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uint8_t buf[44];
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2021-01-28 02:09:44 +00:00
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for (size_t block_num = 0; block_num <= 1; ++block_num) {
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mp_vfs_blockdev_read_ext(&blockdev, block_num, 8, sizeof(buf), buf);
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#if MICROPY_VFS_LFS1
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if (memcmp(&buf[32], "littlefs", 8) == 0) {
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// LFS1
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mp_obj_t vfs = mp_type_vfs_lfs1.make_new(&mp_type_vfs_lfs1, 1, 0, &bdev_obj);
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nlr_pop();
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return vfs;
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}
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#endif
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#if MICROPY_VFS_LFS2
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if (memcmp(&buf[0], "littlefs", 8) == 0) {
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// LFS2
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mp_obj_t vfs = mp_type_vfs_lfs2.make_new(&mp_type_vfs_lfs2, 1, 0, &bdev_obj);
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nlr_pop();
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return vfs;
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}
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#endif
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2019-10-29 06:16:30 +00:00
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}
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nlr_pop();
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} else {
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// Ignore exception (eg block device doesn't support extended readblocks)
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}
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#endif
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#if MICROPY_VFS_FAT
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return mp_fat_vfs_type.make_new(&mp_fat_vfs_type, 1, 0, &bdev_obj);
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#endif
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2020-11-27 10:09:16 +00:00
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// no filesystem found
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mp_raise_OSError(MP_ENODEV);
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2019-10-29 06:16:30 +00:00
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}
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2017-01-27 04:10:09 +00:00
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mp_obj_t mp_vfs_mount(size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
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enum { ARG_readonly, ARG_mkfs };
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static const mp_arg_t allowed_args[] = {
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2019-12-16 04:42:17 +00:00
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{ MP_QSTR_readonly, MP_ARG_KW_ONLY | MP_ARG_OBJ, {.u_rom_obj = MP_ROM_FALSE} },
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{ MP_QSTR_mkfs, MP_ARG_KW_ONLY | MP_ARG_OBJ, {.u_rom_obj = MP_ROM_FALSE} },
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2017-01-27 04:10:09 +00:00
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};
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// parse args
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mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)];
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mp_arg_parse_all(n_args - 2, pos_args + 2, kw_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args);
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// get the mount point
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2017-03-25 08:48:44 +00:00
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size_t mnt_len;
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2017-01-27 04:10:09 +00:00
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const char *mnt_str = mp_obj_str_get_data(pos_args[1], &mnt_len);
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2017-02-09 01:03:12 +00:00
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// see if we need to auto-detect and create the filesystem
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mp_obj_t vfs_obj = pos_args[0];
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mp_obj_t dest[2];
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mp_load_method_maybe(vfs_obj, MP_QSTR_mount, dest);
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if (dest[0] == MP_OBJ_NULL) {
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// Input object has no mount method, assume it's a block device and try to
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// auto-detect the filesystem and create the corresponding VFS entity.
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2019-10-29 06:16:30 +00:00
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vfs_obj = mp_vfs_autodetect(vfs_obj);
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2017-02-09 01:03:12 +00:00
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}
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2017-01-27 04:10:09 +00:00
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// create new object
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2017-01-27 11:40:15 +00:00
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mp_vfs_mount_t *vfs = m_new_obj(mp_vfs_mount_t);
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2017-01-27 04:10:09 +00:00
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vfs->str = mnt_str;
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vfs->len = mnt_len;
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2017-02-09 01:03:12 +00:00
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vfs->obj = vfs_obj;
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2017-01-27 04:10:09 +00:00
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vfs->next = NULL;
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// call the underlying object to do any mounting operation
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mp_vfs_proxy_call(vfs, MP_QSTR_mount, 2, (mp_obj_t *)&args);
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// check that the destination mount point is unused
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const char *path_out;
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2017-03-10 06:13:29 +00:00
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mp_vfs_mount_t *existing_mount = mp_vfs_lookup_path(mp_obj_str_get_str(pos_args[1]), &path_out);
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if (existing_mount != MP_VFS_NONE && existing_mount != MP_VFS_ROOT) {
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if (vfs->len != 1 && existing_mount->len == 1) {
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// if root dir is mounted, still allow to mount something within a subdir of root
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} else {
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// mount point in use
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mp_raise_OSError(MP_EPERM);
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}
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2017-01-27 04:10:09 +00:00
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}
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// insert the vfs into the mount table
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2017-01-27 11:40:15 +00:00
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mp_vfs_mount_t **vfsp = &MP_STATE_VM(vfs_mount_table);
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2017-01-27 04:10:09 +00:00
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while (*vfsp != NULL) {
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2017-03-10 06:13:29 +00:00
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if ((*vfsp)->len == 1) {
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// make sure anything mounted at the root stays at the end of the list
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vfs->next = *vfsp;
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break;
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}
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2017-01-27 04:10:09 +00:00
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vfsp = &(*vfsp)->next;
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}
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*vfsp = vfs;
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return mp_const_none;
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}
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MP_DEFINE_CONST_FUN_OBJ_KW(mp_vfs_mount_obj, 2, mp_vfs_mount);
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mp_obj_t mp_vfs_umount(mp_obj_t mnt_in) {
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// remove vfs from the mount table
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2017-01-27 11:40:15 +00:00
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mp_vfs_mount_t *vfs = NULL;
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2017-03-25 08:48:44 +00:00
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size_t mnt_len;
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2017-01-27 04:10:09 +00:00
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const char *mnt_str = NULL;
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2019-01-30 11:04:54 +00:00
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if (mp_obj_is_str(mnt_in)) {
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2017-01-27 04:10:09 +00:00
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mnt_str = mp_obj_str_get_data(mnt_in, &mnt_len);
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}
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2017-01-27 11:40:15 +00:00
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for (mp_vfs_mount_t **vfsp = &MP_STATE_VM(vfs_mount_table); *vfsp != NULL; vfsp = &(*vfsp)->next) {
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2017-01-27 04:10:09 +00:00
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if ((mnt_str != NULL && !memcmp(mnt_str, (*vfsp)->str, mnt_len + 1)) || (*vfsp)->obj == mnt_in) {
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vfs = *vfsp;
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*vfsp = (*vfsp)->next;
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break;
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}
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}
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if (vfs == NULL) {
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mp_raise_OSError(MP_EINVAL);
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}
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|
|
// if we unmounted the current device then set current to root
|
|
|
|
if (MP_STATE_VM(vfs_cur) == vfs) {
|
2017-01-29 04:14:15 +00:00
|
|
|
MP_STATE_VM(vfs_cur) = MP_VFS_ROOT;
|
2017-01-27 04:10:09 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
// call the underlying object to do any unmounting operation
|
|
|
|
mp_vfs_proxy_call(vfs, MP_QSTR_umount, 0, NULL);
|
|
|
|
|
|
|
|
return mp_const_none;
|
|
|
|
}
|
|
|
|
MP_DEFINE_CONST_FUN_OBJ_1(mp_vfs_umount_obj, mp_vfs_umount);
|
|
|
|
|
2017-06-07 06:29:53 +01:00
|
|
|
// Note: buffering and encoding args are currently ignored
|
2017-01-27 04:10:09 +00:00
|
|
|
mp_obj_t mp_vfs_open(size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
|
|
|
|
enum { ARG_file, ARG_mode, ARG_encoding };
|
|
|
|
static const mp_arg_t allowed_args[] = {
|
2019-12-16 04:40:05 +00:00
|
|
|
{ MP_QSTR_file, MP_ARG_OBJ | MP_ARG_REQUIRED, {.u_rom_obj = MP_ROM_NONE} },
|
2017-01-27 04:10:09 +00:00
|
|
|
{ MP_QSTR_mode, MP_ARG_OBJ, {.u_rom_obj = MP_ROM_QSTR(MP_QSTR_r)} },
|
2017-06-07 06:29:53 +01:00
|
|
|
{ MP_QSTR_buffering, MP_ARG_INT, {.u_int = -1} },
|
2019-12-16 04:40:05 +00:00
|
|
|
{ MP_QSTR_encoding, MP_ARG_OBJ, {.u_rom_obj = MP_ROM_NONE} },
|
2017-01-27 04:10:09 +00:00
|
|
|
};
|
|
|
|
|
|
|
|
// parse args
|
|
|
|
mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)];
|
|
|
|
mp_arg_parse_all(n_args, pos_args, kw_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args);
|
|
|
|
|
2018-07-03 04:02:12 +01:00
|
|
|
#if MICROPY_VFS_POSIX
|
|
|
|
// If the file is an integer then delegate straight to the POSIX handler
|
2019-01-30 11:04:54 +00:00
|
|
|
if (mp_obj_is_small_int(args[ARG_file].u_obj)) {
|
2018-07-03 04:02:12 +01:00
|
|
|
return mp_vfs_posix_file_open(&mp_type_textio, args[ARG_file].u_obj, args[ARG_mode].u_obj);
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
2018-06-06 02:57:01 +01:00
|
|
|
mp_vfs_mount_t *vfs = lookup_path(args[ARG_file].u_obj, &args[ARG_file].u_obj);
|
2017-01-27 04:10:09 +00:00
|
|
|
return mp_vfs_proxy_call(vfs, MP_QSTR_open, 2, (mp_obj_t *)&args);
|
|
|
|
}
|
|
|
|
MP_DEFINE_CONST_FUN_OBJ_KW(mp_vfs_open_obj, 0, mp_vfs_open);
|
|
|
|
|
|
|
|
mp_obj_t mp_vfs_chdir(mp_obj_t path_in) {
|
|
|
|
mp_obj_t path_out;
|
2017-01-27 11:40:15 +00:00
|
|
|
mp_vfs_mount_t *vfs = lookup_path(path_in, &path_out);
|
2017-03-10 06:13:29 +00:00
|
|
|
if (vfs == MP_VFS_ROOT) {
|
|
|
|
// If we change to the root dir and a VFS is mounted at the root then
|
|
|
|
// we must change that VFS's current dir to the root dir so that any
|
|
|
|
// subsequent relative paths begin at the root of that VFS.
|
|
|
|
for (vfs = MP_STATE_VM(vfs_mount_table); vfs != NULL; vfs = vfs->next) {
|
|
|
|
if (vfs->len == 1) {
|
2017-11-16 02:13:24 +00:00
|
|
|
mp_obj_t root = MP_OBJ_NEW_QSTR(MP_QSTR__slash_);
|
2017-03-10 06:13:29 +00:00
|
|
|
mp_vfs_proxy_call(vfs, MP_QSTR_chdir, 1, &root);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
2020-05-28 03:50:44 +01:00
|
|
|
vfs = MP_VFS_ROOT;
|
2017-03-10 06:13:29 +00:00
|
|
|
} else {
|
2017-01-27 04:10:09 +00:00
|
|
|
mp_vfs_proxy_call(vfs, MP_QSTR_chdir, 1, &path_out);
|
|
|
|
}
|
2020-05-28 03:50:44 +01:00
|
|
|
MP_STATE_VM(vfs_cur) = vfs;
|
2017-01-27 04:10:09 +00:00
|
|
|
return mp_const_none;
|
|
|
|
}
|
|
|
|
MP_DEFINE_CONST_FUN_OBJ_1(mp_vfs_chdir_obj, mp_vfs_chdir);
|
|
|
|
|
|
|
|
mp_obj_t mp_vfs_getcwd(void) {
|
2017-01-29 04:14:15 +00:00
|
|
|
if (MP_STATE_VM(vfs_cur) == MP_VFS_ROOT) {
|
2017-01-27 04:10:09 +00:00
|
|
|
return MP_OBJ_NEW_QSTR(MP_QSTR__slash_);
|
|
|
|
}
|
|
|
|
mp_obj_t cwd_o = mp_vfs_proxy_call(MP_STATE_VM(vfs_cur), MP_QSTR_getcwd, 0, NULL);
|
2017-03-10 06:13:29 +00:00
|
|
|
if (MP_STATE_VM(vfs_cur)->len == 1) {
|
|
|
|
// don't prepend "/" for vfs mounted at root
|
|
|
|
return cwd_o;
|
|
|
|
}
|
2017-01-27 04:10:09 +00:00
|
|
|
const char *cwd = mp_obj_str_get_str(cwd_o);
|
|
|
|
vstr_t vstr;
|
|
|
|
vstr_init(&vstr, MP_STATE_VM(vfs_cur)->len + strlen(cwd) + 1);
|
|
|
|
vstr_add_strn(&vstr, MP_STATE_VM(vfs_cur)->str, MP_STATE_VM(vfs_cur)->len);
|
|
|
|
if (!(cwd[0] == '/' && cwd[1] == 0)) {
|
|
|
|
vstr_add_str(&vstr, cwd);
|
|
|
|
}
|
|
|
|
return mp_obj_new_str_from_vstr(&mp_type_str, &vstr);
|
|
|
|
}
|
|
|
|
MP_DEFINE_CONST_FUN_OBJ_0(mp_vfs_getcwd_obj, mp_vfs_getcwd);
|
|
|
|
|
2017-05-05 14:31:51 +01:00
|
|
|
typedef struct _mp_vfs_ilistdir_it_t {
|
|
|
|
mp_obj_base_t base;
|
|
|
|
mp_fun_1_t iternext;
|
|
|
|
union {
|
|
|
|
mp_vfs_mount_t *vfs;
|
|
|
|
mp_obj_t iter;
|
|
|
|
} cur;
|
|
|
|
bool is_str;
|
|
|
|
bool is_iter;
|
|
|
|
} mp_vfs_ilistdir_it_t;
|
|
|
|
|
|
|
|
STATIC mp_obj_t mp_vfs_ilistdir_it_iternext(mp_obj_t self_in) {
|
|
|
|
mp_vfs_ilistdir_it_t *self = MP_OBJ_TO_PTR(self_in);
|
|
|
|
if (self->is_iter) {
|
|
|
|
// continue delegating to root dir
|
|
|
|
return mp_iternext(self->cur.iter);
|
|
|
|
} else if (self->cur.vfs == NULL) {
|
|
|
|
// finished iterating mount points and no root dir is mounted
|
|
|
|
return MP_OBJ_STOP_ITERATION;
|
|
|
|
} else {
|
|
|
|
// continue iterating mount points
|
|
|
|
mp_vfs_mount_t *vfs = self->cur.vfs;
|
|
|
|
self->cur.vfs = vfs->next;
|
|
|
|
if (vfs->len == 1) {
|
|
|
|
// vfs is mounted at root dir, delegate to it
|
2017-11-16 02:13:24 +00:00
|
|
|
mp_obj_t root = MP_OBJ_NEW_QSTR(MP_QSTR__slash_);
|
2017-05-05 14:31:51 +01:00
|
|
|
self->is_iter = true;
|
|
|
|
self->cur.iter = mp_vfs_proxy_call(vfs, MP_QSTR_ilistdir, 1, &root);
|
|
|
|
return mp_iternext(self->cur.iter);
|
|
|
|
} else {
|
|
|
|
// a mounted directory
|
|
|
|
mp_obj_tuple_t *t = MP_OBJ_TO_PTR(mp_obj_new_tuple(3, NULL));
|
|
|
|
t->items[0] = mp_obj_new_str_of_type(
|
|
|
|
self->is_str ? &mp_type_str : &mp_type_bytes,
|
|
|
|
(const byte *)vfs->str + 1, vfs->len - 1);
|
|
|
|
t->items[1] = MP_OBJ_NEW_SMALL_INT(MP_S_IFDIR);
|
|
|
|
t->items[2] = MP_OBJ_NEW_SMALL_INT(0); // no inode number
|
|
|
|
return MP_OBJ_FROM_PTR(t);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
mp_obj_t mp_vfs_ilistdir(size_t n_args, const mp_obj_t *args) {
|
2017-01-27 04:10:09 +00:00
|
|
|
mp_obj_t path_in;
|
|
|
|
if (n_args == 1) {
|
|
|
|
path_in = args[0];
|
|
|
|
} else {
|
|
|
|
path_in = MP_OBJ_NEW_QSTR(MP_QSTR_);
|
|
|
|
}
|
|
|
|
|
|
|
|
mp_obj_t path_out;
|
2017-01-27 11:40:15 +00:00
|
|
|
mp_vfs_mount_t *vfs = lookup_path(path_in, &path_out);
|
2017-01-27 04:10:09 +00:00
|
|
|
|
2017-01-29 04:14:15 +00:00
|
|
|
if (vfs == MP_VFS_ROOT) {
|
2017-01-27 04:10:09 +00:00
|
|
|
// list the root directory
|
2022-04-22 08:09:15 +01:00
|
|
|
mp_vfs_ilistdir_it_t *iter = mp_obj_malloc(mp_vfs_ilistdir_it_t, &mp_type_polymorph_iter);
|
2017-05-05 14:31:51 +01:00
|
|
|
iter->iternext = mp_vfs_ilistdir_it_iternext;
|
|
|
|
iter->cur.vfs = MP_STATE_VM(vfs_mount_table);
|
|
|
|
iter->is_str = mp_obj_get_type(path_in) == &mp_type_str;
|
|
|
|
iter->is_iter = false;
|
|
|
|
return MP_OBJ_FROM_PTR(iter);
|
2017-01-27 04:10:09 +00:00
|
|
|
}
|
|
|
|
|
2017-05-05 14:31:51 +01:00
|
|
|
return mp_vfs_proxy_call(vfs, MP_QSTR_ilistdir, 1, &path_out);
|
|
|
|
}
|
|
|
|
MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(mp_vfs_ilistdir_obj, 0, 1, mp_vfs_ilistdir);
|
|
|
|
|
|
|
|
mp_obj_t mp_vfs_listdir(size_t n_args, const mp_obj_t *args) {
|
|
|
|
mp_obj_t iter = mp_vfs_ilistdir(n_args, args);
|
|
|
|
mp_obj_t dir_list = mp_obj_new_list(0, NULL);
|
|
|
|
mp_obj_t next;
|
|
|
|
while ((next = mp_iternext(iter)) != MP_OBJ_STOP_ITERATION) {
|
2018-03-09 00:02:26 +00:00
|
|
|
mp_obj_list_append(dir_list, mp_obj_subscr(next, MP_OBJ_NEW_SMALL_INT(0), MP_OBJ_SENTINEL));
|
2017-05-05 14:31:51 +01:00
|
|
|
}
|
|
|
|
return dir_list;
|
2017-01-27 04:10:09 +00:00
|
|
|
}
|
|
|
|
MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(mp_vfs_listdir_obj, 0, 1, mp_vfs_listdir);
|
|
|
|
|
|
|
|
mp_obj_t mp_vfs_mkdir(mp_obj_t path_in) {
|
|
|
|
mp_obj_t path_out;
|
2017-01-27 11:40:15 +00:00
|
|
|
mp_vfs_mount_t *vfs = lookup_path(path_in, &path_out);
|
2017-02-09 04:51:34 +00:00
|
|
|
if (vfs == MP_VFS_ROOT || (vfs != MP_VFS_NONE && !strcmp(mp_obj_str_get_str(path_out), "/"))) {
|
|
|
|
mp_raise_OSError(MP_EEXIST);
|
|
|
|
}
|
2017-01-27 04:10:09 +00:00
|
|
|
return mp_vfs_proxy_call(vfs, MP_QSTR_mkdir, 1, &path_out);
|
|
|
|
}
|
|
|
|
MP_DEFINE_CONST_FUN_OBJ_1(mp_vfs_mkdir_obj, mp_vfs_mkdir);
|
|
|
|
|
|
|
|
mp_obj_t mp_vfs_remove(mp_obj_t path_in) {
|
|
|
|
mp_obj_t path_out;
|
2017-01-27 11:40:15 +00:00
|
|
|
mp_vfs_mount_t *vfs = lookup_path(path_in, &path_out);
|
2017-01-27 04:10:09 +00:00
|
|
|
return mp_vfs_proxy_call(vfs, MP_QSTR_remove, 1, &path_out);
|
|
|
|
}
|
|
|
|
MP_DEFINE_CONST_FUN_OBJ_1(mp_vfs_remove_obj, mp_vfs_remove);
|
|
|
|
|
|
|
|
mp_obj_t mp_vfs_rename(mp_obj_t old_path_in, mp_obj_t new_path_in) {
|
|
|
|
mp_obj_t args[2];
|
2017-01-27 11:40:15 +00:00
|
|
|
mp_vfs_mount_t *old_vfs = lookup_path(old_path_in, &args[0]);
|
|
|
|
mp_vfs_mount_t *new_vfs = lookup_path(new_path_in, &args[1]);
|
2017-01-27 04:10:09 +00:00
|
|
|
if (old_vfs != new_vfs) {
|
|
|
|
// can't rename across filesystems
|
|
|
|
mp_raise_OSError(MP_EPERM);
|
|
|
|
}
|
|
|
|
return mp_vfs_proxy_call(old_vfs, MP_QSTR_rename, 2, args);
|
|
|
|
}
|
|
|
|
MP_DEFINE_CONST_FUN_OBJ_2(mp_vfs_rename_obj, mp_vfs_rename);
|
|
|
|
|
|
|
|
mp_obj_t mp_vfs_rmdir(mp_obj_t path_in) {
|
|
|
|
mp_obj_t path_out;
|
2017-01-27 11:40:15 +00:00
|
|
|
mp_vfs_mount_t *vfs = lookup_path(path_in, &path_out);
|
2017-01-27 04:10:09 +00:00
|
|
|
return mp_vfs_proxy_call(vfs, MP_QSTR_rmdir, 1, &path_out);
|
|
|
|
}
|
|
|
|
MP_DEFINE_CONST_FUN_OBJ_1(mp_vfs_rmdir_obj, mp_vfs_rmdir);
|
|
|
|
|
|
|
|
mp_obj_t mp_vfs_stat(mp_obj_t path_in) {
|
|
|
|
mp_obj_t path_out;
|
2017-01-27 11:40:15 +00:00
|
|
|
mp_vfs_mount_t *vfs = lookup_path(path_in, &path_out);
|
2017-02-13 01:25:43 +00:00
|
|
|
if (vfs == MP_VFS_ROOT) {
|
|
|
|
mp_obj_tuple_t *t = MP_OBJ_TO_PTR(mp_obj_new_tuple(10, NULL));
|
2017-05-10 03:30:34 +01:00
|
|
|
t->items[0] = MP_OBJ_NEW_SMALL_INT(MP_S_IFDIR); // st_mode
|
2017-02-13 01:25:43 +00:00
|
|
|
for (int i = 1; i <= 9; ++i) {
|
|
|
|
t->items[i] = MP_OBJ_NEW_SMALL_INT(0); // dev, nlink, uid, gid, size, atime, mtime, ctime
|
|
|
|
}
|
|
|
|
return MP_OBJ_FROM_PTR(t);
|
|
|
|
}
|
2017-01-27 04:10:09 +00:00
|
|
|
return mp_vfs_proxy_call(vfs, MP_QSTR_stat, 1, &path_out);
|
|
|
|
}
|
|
|
|
MP_DEFINE_CONST_FUN_OBJ_1(mp_vfs_stat_obj, mp_vfs_stat);
|
|
|
|
|
|
|
|
mp_obj_t mp_vfs_statvfs(mp_obj_t path_in) {
|
|
|
|
mp_obj_t path_out;
|
2017-01-27 11:40:15 +00:00
|
|
|
mp_vfs_mount_t *vfs = lookup_path(path_in, &path_out);
|
2017-06-07 06:17:45 +01:00
|
|
|
if (vfs == MP_VFS_ROOT) {
|
|
|
|
// statvfs called on the root directory, see if there's anything mounted there
|
|
|
|
for (vfs = MP_STATE_VM(vfs_mount_table); vfs != NULL; vfs = vfs->next) {
|
|
|
|
if (vfs->len == 1) {
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
// If there's nothing mounted at root then return a mostly-empty tuple
|
|
|
|
if (vfs == NULL) {
|
|
|
|
mp_obj_tuple_t *t = MP_OBJ_TO_PTR(mp_obj_new_tuple(10, NULL));
|
|
|
|
|
|
|
|
// fill in: bsize, frsize, blocks, bfree, bavail, files, ffree, favail, flags
|
|
|
|
for (int i = 0; i <= 8; ++i) {
|
|
|
|
t->items[i] = MP_OBJ_NEW_SMALL_INT(0);
|
|
|
|
}
|
|
|
|
|
|
|
|
// Put something sensible in f_namemax
|
|
|
|
t->items[9] = MP_OBJ_NEW_SMALL_INT(MICROPY_ALLOC_PATH_MAX);
|
|
|
|
|
|
|
|
return MP_OBJ_FROM_PTR(t);
|
|
|
|
}
|
|
|
|
|
|
|
|
// VFS mounted at root so delegate the call to it
|
|
|
|
path_out = MP_OBJ_NEW_QSTR(MP_QSTR__slash_);
|
|
|
|
}
|
2017-01-27 04:10:09 +00:00
|
|
|
return mp_vfs_proxy_call(vfs, MP_QSTR_statvfs, 1, &path_out);
|
|
|
|
}
|
|
|
|
MP_DEFINE_CONST_FUN_OBJ_1(mp_vfs_statvfs_obj, mp_vfs_statvfs);
|
|
|
|
|
2020-03-11 03:24:26 +00:00
|
|
|
// This is a C-level helper function for ports to use if needed.
|
|
|
|
int mp_vfs_mount_and_chdir_protected(mp_obj_t bdev, mp_obj_t mount_point) {
|
|
|
|
nlr_buf_t nlr;
|
|
|
|
mp_int_t ret = -MP_EIO;
|
|
|
|
if (nlr_push(&nlr) == 0) {
|
|
|
|
mp_obj_t args[] = { bdev, mount_point };
|
|
|
|
mp_vfs_mount(2, args, (mp_map_t *)&mp_const_empty_map);
|
|
|
|
mp_vfs_chdir(mount_point);
|
|
|
|
ret = 0; // success
|
|
|
|
nlr_pop();
|
|
|
|
} else {
|
|
|
|
mp_obj_base_t *exc = nlr.ret_val;
|
|
|
|
if (mp_obj_is_subclass_fast(MP_OBJ_FROM_PTR(exc->type), MP_OBJ_FROM_PTR(&mp_type_OSError))) {
|
|
|
|
mp_obj_t v = mp_obj_exception_get_value(MP_OBJ_FROM_PTR(exc));
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mp_obj_get_int_maybe(v, &ret); // get errno value
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ret = -ret;
|
|
|
|
}
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}
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return ret;
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|
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}
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2017-01-27 04:10:09 +00:00
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#endif // MICROPY_VFS
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