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micropython/extmod/vfs_lfsx.c

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/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2019 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 <stdio.h>
#include <string.h>
#include "py/runtime.h"
#include "py/stream.h"
#include "py/binary.h"
#include "py/objarray.h"
#include "py/mperrno.h"
#include "extmod/vfs.h"
STATIC int MP_VFS_LFSx(dev_ioctl)(const struct LFSx_API(config) *c, int cmd, int arg, bool must_return_int) {
mp_obj_t ret = mp_vfs_blockdev_ioctl(c->context, cmd, arg);
int ret_i = 0;
if (must_return_int || ret != mp_const_none) {
ret_i = mp_obj_get_int(ret);
}
return ret_i;
}
STATIC int MP_VFS_LFSx(dev_read)(const struct LFSx_API(config) *c, LFSx_API(block_t) block, LFSx_API(off_t) off, void *buffer, LFSx_API(size_t) size) {
return mp_vfs_blockdev_read_ext(c->context, block, off, size, buffer);
}
STATIC int MP_VFS_LFSx(dev_prog)(const struct LFSx_API(config) *c, LFSx_API(block_t) block, LFSx_API(off_t) off, const void *buffer, LFSx_API(size_t) size) {
return mp_vfs_blockdev_write_ext(c->context, block, off, size, buffer);
}
STATIC int MP_VFS_LFSx(dev_erase)(const struct LFSx_API(config) *c, LFSx_API(block_t) block) {
return MP_VFS_LFSx(dev_ioctl)(c, MP_BLOCKDEV_IOCTL_BLOCK_ERASE, block, true);
}
STATIC int MP_VFS_LFSx(dev_sync)(const struct LFSx_API(config) *c) {
return MP_VFS_LFSx(dev_ioctl)(c, MP_BLOCKDEV_IOCTL_SYNC, 0, false);
}
STATIC void MP_VFS_LFSx(init_config)(MP_OBJ_VFS_LFSx *self, mp_obj_t bdev, size_t read_size, size_t prog_size, size_t lookahead) {
self->blockdev.flags = MP_BLOCKDEV_FLAG_FREE_OBJ;
mp_vfs_blockdev_init(&self->blockdev, bdev);
struct LFSx_API(config) *config = &self->config;
memset(config, 0, sizeof(*config));
config->context = &self->blockdev;
config->read = MP_VFS_LFSx(dev_read);
config->prog = MP_VFS_LFSx(dev_prog);
config->erase = MP_VFS_LFSx(dev_erase);
config->sync = MP_VFS_LFSx(dev_sync);
MP_VFS_LFSx(dev_ioctl)(config, MP_BLOCKDEV_IOCTL_INIT, 1, false); // initialise block device
int bs = MP_VFS_LFSx(dev_ioctl)(config, MP_BLOCKDEV_IOCTL_BLOCK_SIZE, 0, true); // get block size
int bc = MP_VFS_LFSx(dev_ioctl)(config, MP_BLOCKDEV_IOCTL_BLOCK_COUNT, 0, true); // get block count
self->blockdev.block_size = bs;
config->read_size = read_size;
config->prog_size = prog_size;
config->block_size = bs;
config->block_count = bc;
#if LFS_BUILD_VERSION == 1
config->lookahead = lookahead;
config->read_buffer = m_new(uint8_t, config->read_size);
config->prog_buffer = m_new(uint8_t, config->prog_size);
config->lookahead_buffer = m_new(uint8_t, config->lookahead / 8);
#else
config->block_cycles = 100;
config->cache_size = 4 * MAX(read_size, prog_size);
config->lookahead_size = lookahead;
config->read_buffer = m_new(uint8_t, config->cache_size);
config->prog_buffer = m_new(uint8_t, config->cache_size);
config->lookahead_buffer = m_new(uint8_t, config->lookahead_size);
#endif
}
const char *MP_VFS_LFSx(make_path)(MP_OBJ_VFS_LFSx *self, mp_obj_t path_in) {
const char *path = mp_obj_str_get_str(path_in);
if (path[0] != '/') {
size_t l = vstr_len(&self->cur_dir);
if (l > 0) {
vstr_add_str(&self->cur_dir, path);
path = vstr_null_terminated_str(&self->cur_dir);
self->cur_dir.len = l;
}
}
return path;
}
STATIC mp_obj_t MP_VFS_LFSx(make_new)(const mp_obj_type_t *type, size_t n_args, size_t n_kw, const mp_obj_t *all_args) {
mp_arg_val_t args[MP_ARRAY_SIZE(lfs_make_allowed_args)];
mp_arg_parse_all_kw_array(n_args, n_kw, all_args, MP_ARRAY_SIZE(lfs_make_allowed_args), lfs_make_allowed_args, args);
MP_OBJ_VFS_LFSx *self = m_new0(MP_OBJ_VFS_LFSx, 1);
self->base.type = type;
vstr_init(&self->cur_dir, 16);
vstr_add_byte(&self->cur_dir, '/');
MP_VFS_LFSx(init_config)(self, args[LFS_MAKE_ARG_bdev].u_obj,
args[LFS_MAKE_ARG_readsize].u_int, args[LFS_MAKE_ARG_progsize].u_int, args[LFS_MAKE_ARG_lookahead].u_int);
int ret = LFSx_API(mount)(&self->lfs, &self->config);
if (ret < 0) {
mp_raise_OSError(-ret);
}
return MP_OBJ_FROM_PTR(self);
}
STATIC mp_obj_t MP_VFS_LFSx(mkfs)(size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
mp_arg_val_t args[MP_ARRAY_SIZE(lfs_make_allowed_args)];
mp_arg_parse_all(n_args, pos_args, kw_args, MP_ARRAY_SIZE(lfs_make_allowed_args), lfs_make_allowed_args, args);
MP_OBJ_VFS_LFSx self;
MP_VFS_LFSx(init_config)(&self, args[LFS_MAKE_ARG_bdev].u_obj,
args[LFS_MAKE_ARG_readsize].u_int, args[LFS_MAKE_ARG_progsize].u_int, args[LFS_MAKE_ARG_lookahead].u_int);
int ret = LFSx_API(format)(&self.lfs, &self.config);
if (ret < 0) {
mp_raise_OSError(-ret);
}
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_KW(MP_VFS_LFSx(mkfs_fun_obj), 0, MP_VFS_LFSx(mkfs));
STATIC MP_DEFINE_CONST_STATICMETHOD_OBJ(MP_VFS_LFSx(mkfs_obj), MP_ROM_PTR(&MP_VFS_LFSx(mkfs_fun_obj)));
// Implementation of mp_vfs_lfs_file_open is provided in vfs_lfsx_file.c
STATIC MP_DEFINE_CONST_FUN_OBJ_3(MP_VFS_LFSx(open_obj), MP_VFS_LFSx(file_open));
typedef struct MP_VFS_LFSx(_ilistdir_it_t) {
mp_obj_base_t base;
mp_fun_1_t iternext;
bool is_str;
MP_OBJ_VFS_LFSx *vfs;
LFSx_API(dir_t) dir;
} MP_VFS_LFSx(ilistdir_it_t);
STATIC mp_obj_t MP_VFS_LFSx(ilistdir_it_iternext)(mp_obj_t self_in) {
MP_VFS_LFSx(ilistdir_it_t) *self = MP_OBJ_TO_PTR(self_in);
struct LFSx_API(info) info;
for (;;) {
int ret = LFSx_API(dir_read)(&self->vfs->lfs, &self->dir, &info);
if (ret == 0) {
LFSx_API(dir_close)(&self->vfs->lfs, &self->dir);
return MP_OBJ_STOP_ITERATION;
}
if (!(info.name[0] == '.' && (info.name[1] == '\0'
|| (info.name[1] == '.' && info.name[2] == '\0')))) {
break;
}
}
// make 4-tuple with info about this entry
mp_obj_tuple_t *t = MP_OBJ_TO_PTR(mp_obj_new_tuple(4, NULL));
if (self->is_str) {
t->items[0] = mp_obj_new_str(info.name, strlen(info.name));
} else {
t->items[0] = mp_obj_new_bytes((const byte*)info.name, strlen(info.name));
}
t->items[1] = MP_OBJ_NEW_SMALL_INT(info.type == LFSx_MACRO(_TYPE_REG) ? MP_S_IFREG : MP_S_IFDIR);
t->items[2] = MP_OBJ_NEW_SMALL_INT(0); // no inode number
t->items[3] = MP_OBJ_NEW_SMALL_INT(info.size);
return MP_OBJ_FROM_PTR(t);
}
STATIC mp_obj_t MP_VFS_LFSx(ilistdir_func)(size_t n_args, const mp_obj_t *args) {
MP_OBJ_VFS_LFSx *self = MP_OBJ_TO_PTR(args[0]);
bool is_str_type = true;
const char *path;
if (n_args == 2) {
if (mp_obj_get_type(args[1]) == &mp_type_bytes) {
is_str_type = false;
}
path = MP_VFS_LFSx(make_path)(self, args[1]);
} else {
path = vstr_null_terminated_str(&self->cur_dir);
}
MP_VFS_LFSx(ilistdir_it_t) *iter = m_new_obj(MP_VFS_LFSx(ilistdir_it_t));
iter->base.type = &mp_type_polymorph_iter;
iter->iternext = MP_VFS_LFSx(ilistdir_it_iternext);
iter->is_str = is_str_type;
iter->vfs = self;
int ret = LFSx_API(dir_open)(&self->lfs, &iter->dir, path);
if (ret < 0) {
mp_raise_OSError(-ret);
}
return MP_OBJ_FROM_PTR(iter);
}
STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(MP_VFS_LFSx(ilistdir_obj), 1, 2, MP_VFS_LFSx(ilistdir_func));
STATIC mp_obj_t MP_VFS_LFSx(remove)(mp_obj_t self_in, mp_obj_t path_in) {
MP_OBJ_VFS_LFSx *self = MP_OBJ_TO_PTR(self_in);
const char *path = MP_VFS_LFSx(make_path)(self, path_in);
int ret = LFSx_API(remove)(&self->lfs, path);
if (ret < 0) {
mp_raise_OSError(-ret);
}
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_2(MP_VFS_LFSx(remove_obj), MP_VFS_LFSx(remove));
STATIC mp_obj_t MP_VFS_LFSx(rmdir)(mp_obj_t self_in, mp_obj_t path_in) {
MP_OBJ_VFS_LFSx *self = MP_OBJ_TO_PTR(self_in);
const char *path = MP_VFS_LFSx(make_path)(self, path_in);
int ret = LFSx_API(remove)(&self->lfs, path);
if (ret < 0) {
mp_raise_OSError(-ret);
}
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_2(MP_VFS_LFSx(rmdir_obj), MP_VFS_LFSx(rmdir));
STATIC mp_obj_t MP_VFS_LFSx(rename)(mp_obj_t self_in, mp_obj_t path_old_in, mp_obj_t path_new_in) {
MP_OBJ_VFS_LFSx *self = MP_OBJ_TO_PTR(self_in);
const char *path_old = MP_VFS_LFSx(make_path)(self, path_old_in);
vstr_t path_new;
vstr_init(&path_new, vstr_len(&self->cur_dir));
vstr_add_strn(&path_new, vstr_str(&self->cur_dir), vstr_len(&self->cur_dir));
vstr_add_str(&path_new, mp_obj_str_get_str(path_new_in));
int ret = LFSx_API(rename)(&self->lfs, path_old, vstr_null_terminated_str(&path_new));
vstr_clear(&path_new);
if (ret < 0) {
mp_raise_OSError(-ret);
}
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_3(MP_VFS_LFSx(rename_obj), MP_VFS_LFSx(rename));
STATIC mp_obj_t MP_VFS_LFSx(mkdir)(mp_obj_t self_in, mp_obj_t path_o) {
MP_OBJ_VFS_LFSx *self = MP_OBJ_TO_PTR(self_in);
const char *path = MP_VFS_LFSx(make_path)(self, path_o);
int ret = LFSx_API(mkdir)(&self->lfs, path);
if (ret < 0) {
mp_raise_OSError(-ret);
}
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_2(MP_VFS_LFSx(mkdir_obj), MP_VFS_LFSx(mkdir));
STATIC mp_obj_t MP_VFS_LFSx(chdir)(mp_obj_t self_in, mp_obj_t path_in) {
MP_OBJ_VFS_LFSx *self = MP_OBJ_TO_PTR(self_in);
// Check path exists
const char *path = MP_VFS_LFSx(make_path)(self, path_in);
if (path[1] != '\0') {
// Not at root, check it exists
struct LFSx_API(info) info;
int ret = LFSx_API(stat)(&self->lfs, path, &info);
if (ret < 0 || info.type != LFSx_MACRO(_TYPE_DIR)) {
mp_raise_OSError(-MP_ENOENT);
}
}
// Update cur_dir with new path
if (path == vstr_str(&self->cur_dir)) {
self->cur_dir.len = strlen(path);
} else {
vstr_reset(&self->cur_dir);
vstr_add_str(&self->cur_dir, path);
}
// If not at root add trailing / to make it easy to build paths
if (vstr_len(&self->cur_dir) != 1) {
vstr_add_byte(&self->cur_dir, '/');
}
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_2(MP_VFS_LFSx(chdir_obj), MP_VFS_LFSx(chdir));
STATIC mp_obj_t MP_VFS_LFSx(getcwd)(mp_obj_t self_in) {
MP_OBJ_VFS_LFSx *self = MP_OBJ_TO_PTR(self_in);
if (vstr_len(&self->cur_dir) == 1) {
return MP_OBJ_NEW_QSTR(MP_QSTR__slash_);
} else {
// don't include trailing /
return mp_obj_new_str(self->cur_dir.buf, self->cur_dir.len - 1);
}
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(MP_VFS_LFSx(getcwd_obj), MP_VFS_LFSx(getcwd));
STATIC mp_obj_t MP_VFS_LFSx(stat)(mp_obj_t self_in, mp_obj_t path_in) {
MP_OBJ_VFS_LFSx *self = MP_OBJ_TO_PTR(self_in);
const char *path = mp_obj_str_get_str(path_in);
struct LFSx_API(info) info;
int ret = LFSx_API(stat)(&self->lfs, path, &info);
if (ret < 0) {
mp_raise_OSError(-ret);
}
mp_obj_tuple_t *t = MP_OBJ_TO_PTR(mp_obj_new_tuple(10, NULL));
t->items[0] = MP_OBJ_NEW_SMALL_INT(info.type == LFSx_MACRO(_TYPE_REG) ? MP_S_IFREG : MP_S_IFDIR); // st_mode
t->items[1] = MP_OBJ_NEW_SMALL_INT(0); // st_ino
t->items[2] = MP_OBJ_NEW_SMALL_INT(0); // st_dev
t->items[3] = MP_OBJ_NEW_SMALL_INT(0); // st_nlink
t->items[4] = MP_OBJ_NEW_SMALL_INT(0); // st_uid
t->items[5] = MP_OBJ_NEW_SMALL_INT(0); // st_gid
t->items[6] = mp_obj_new_int_from_uint(info.size); // st_size
t->items[7] = MP_OBJ_NEW_SMALL_INT(0); // st_atime
t->items[8] = MP_OBJ_NEW_SMALL_INT(0); // st_mtime
t->items[9] = MP_OBJ_NEW_SMALL_INT(0); // st_ctime
return MP_OBJ_FROM_PTR(t);
}
STATIC MP_DEFINE_CONST_FUN_OBJ_2(MP_VFS_LFSx(stat_obj), MP_VFS_LFSx(stat));
STATIC int LFSx_API(traverse_cb)(void *data, LFSx_API(block_t) bl) {
(void)bl;
uint32_t *n = (uint32_t*)data;
*n += 1;
return LFSx_MACRO(_ERR_OK);
}
STATIC mp_obj_t MP_VFS_LFSx(statvfs)(mp_obj_t self_in, mp_obj_t path_in) {
(void)path_in;
MP_OBJ_VFS_LFSx *self = MP_OBJ_TO_PTR(self_in);
uint32_t n_used_blocks = 0;
#if LFS_BUILD_VERSION == 1
int ret = LFSx_API(traverse)(&self->lfs, LFSx_API(traverse_cb), &n_used_blocks);
#else
int ret = LFSx_API(fs_traverse)(&self->lfs, LFSx_API(traverse_cb), &n_used_blocks);
#endif
if (ret < 0) {
mp_raise_OSError(-ret);
}
mp_obj_tuple_t *t = MP_OBJ_TO_PTR(mp_obj_new_tuple(10, NULL));
t->items[0] = MP_OBJ_NEW_SMALL_INT(self->lfs.cfg->block_size); // f_bsize
t->items[1] = t->items[0]; // f_frsize
t->items[2] = MP_OBJ_NEW_SMALL_INT(self->lfs.cfg->block_count); // f_blocks
t->items[3] = MP_OBJ_NEW_SMALL_INT(self->lfs.cfg->block_count - n_used_blocks); // f_bfree
t->items[4] = t->items[3]; // f_bavail
t->items[5] = MP_OBJ_NEW_SMALL_INT(0); // f_files
t->items[6] = MP_OBJ_NEW_SMALL_INT(0); // f_ffree
t->items[7] = MP_OBJ_NEW_SMALL_INT(0); // f_favail
t->items[8] = MP_OBJ_NEW_SMALL_INT(0); // f_flags
t->items[9] = MP_OBJ_NEW_SMALL_INT(LFSx_MACRO(_NAME_MAX)); // f_namemax
return MP_OBJ_FROM_PTR(t);
}
STATIC MP_DEFINE_CONST_FUN_OBJ_2(MP_VFS_LFSx(statvfs_obj), MP_VFS_LFSx(statvfs));
STATIC mp_obj_t MP_VFS_LFSx(mount)(mp_obj_t self_in, mp_obj_t readonly, mp_obj_t mkfs) {
(void)self_in;
(void)readonly;
(void)mkfs;
// already called LFSx_API(mount) in MP_VFS_LFSx(make_new)
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_3(MP_VFS_LFSx(mount_obj), MP_VFS_LFSx(mount));
STATIC mp_obj_t MP_VFS_LFSx(umount)(mp_obj_t self_in) {
MP_OBJ_VFS_LFSx *self = MP_OBJ_TO_PTR(self_in);
// LFS unmount never fails
LFSx_API(unmount)(&self->lfs);
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(MP_VFS_LFSx(umount_obj), MP_VFS_LFSx(umount));
STATIC const mp_rom_map_elem_t MP_VFS_LFSx(locals_dict_table)[] = {
{ MP_ROM_QSTR(MP_QSTR_mkfs), MP_ROM_PTR(&MP_VFS_LFSx(mkfs_obj)) },
{ MP_ROM_QSTR(MP_QSTR_open), MP_ROM_PTR(&MP_VFS_LFSx(open_obj)) },
{ MP_ROM_QSTR(MP_QSTR_ilistdir), MP_ROM_PTR(&MP_VFS_LFSx(ilistdir_obj)) },
{ MP_ROM_QSTR(MP_QSTR_mkdir), MP_ROM_PTR(&MP_VFS_LFSx(mkdir_obj)) },
{ MP_ROM_QSTR(MP_QSTR_rmdir), MP_ROM_PTR(&MP_VFS_LFSx(rmdir_obj)) },
{ MP_ROM_QSTR(MP_QSTR_chdir), MP_ROM_PTR(&MP_VFS_LFSx(chdir_obj)) },
{ MP_ROM_QSTR(MP_QSTR_getcwd), MP_ROM_PTR(&MP_VFS_LFSx(getcwd_obj)) },
{ MP_ROM_QSTR(MP_QSTR_remove), MP_ROM_PTR(&MP_VFS_LFSx(remove_obj)) },
{ MP_ROM_QSTR(MP_QSTR_rename), MP_ROM_PTR(&MP_VFS_LFSx(rename_obj)) },
{ MP_ROM_QSTR(MP_QSTR_stat), MP_ROM_PTR(&MP_VFS_LFSx(stat_obj)) },
{ MP_ROM_QSTR(MP_QSTR_statvfs), MP_ROM_PTR(&MP_VFS_LFSx(statvfs_obj)) },
{ MP_ROM_QSTR(MP_QSTR_mount), MP_ROM_PTR(&MP_VFS_LFSx(mount_obj)) },
{ MP_ROM_QSTR(MP_QSTR_umount), MP_ROM_PTR(&MP_VFS_LFSx(umount_obj)) },
};
STATIC MP_DEFINE_CONST_DICT(MP_VFS_LFSx(locals_dict), MP_VFS_LFSx(locals_dict_table));
STATIC mp_import_stat_t MP_VFS_LFSx(import_stat)(void *self_in, const char *path) {
MP_OBJ_VFS_LFSx *self = self_in;
struct LFSx_API(info) info;
int ret = LFSx_API(stat)(&self->lfs, path, &info);
if (ret == 0) {
if (info.type == LFSx_MACRO(_TYPE_REG)) {
return MP_IMPORT_STAT_FILE;
} else {
return MP_IMPORT_STAT_DIR;
}
}
return MP_IMPORT_STAT_NO_EXIST;
}
STATIC const mp_vfs_proto_t MP_VFS_LFSx(proto) = {
.import_stat = MP_VFS_LFSx(import_stat),
};
const mp_obj_type_t MP_TYPE_VFS_LFSx = {
{ &mp_type_type },
#if LFS_BUILD_VERSION == 1
.name = MP_QSTR_VfsLfs1,
#else
.name = MP_QSTR_VfsLfs2,
#endif
.make_new = MP_VFS_LFSx(make_new),
.protocol = &MP_VFS_LFSx(proto),
.locals_dict = (mp_obj_dict_t*)&MP_VFS_LFSx(locals_dict),
};
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