169 lines
6.4 KiB
C
169 lines
6.4 KiB
C
/*
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* This file is part of the Micro Python 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) 2013, 2014 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/mpstate.h"
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#include "py/runtime.h"
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#include "py/objtuple.h"
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#include "py/objstr.h"
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#include "lib/timeutils/timeutils.h"
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#include "lib/oofatfs/ff.h"
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#include "lib/oofatfs/diskio.h"
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#include "extmod/vfs.h"
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#include "extmod/vfs_fat.h"
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#include "genhdr/mpversion.h"
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#include "rng.h"
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#include "uart.h"
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#include "portmodules.h"
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/// \module os - basic "operating system" services
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///
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/// The `os` module contains functions for filesystem access and `urandom`.
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///
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/// The filesystem has `/` as the root directory, and the available physical
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/// drives are accessible from here. They are currently:
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///
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/// /flash -- the internal flash filesystem
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/// /sd -- the SD card (if it exists)
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///
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/// On boot up, the current directory is `/flash` if no SD card is inserted,
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/// otherwise it is `/sd`.
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STATIC const qstr os_uname_info_fields[] = {
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MP_QSTR_sysname, MP_QSTR_nodename,
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MP_QSTR_release, MP_QSTR_version, MP_QSTR_machine
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};
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STATIC const MP_DEFINE_STR_OBJ(os_uname_info_sysname_obj, "pyboard");
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STATIC const MP_DEFINE_STR_OBJ(os_uname_info_nodename_obj, "pyboard");
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STATIC const MP_DEFINE_STR_OBJ(os_uname_info_release_obj, MICROPY_VERSION_STRING);
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STATIC const MP_DEFINE_STR_OBJ(os_uname_info_version_obj, MICROPY_GIT_TAG " on " MICROPY_BUILD_DATE);
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STATIC const MP_DEFINE_STR_OBJ(os_uname_info_machine_obj, MICROPY_HW_BOARD_NAME " with " MICROPY_HW_MCU_NAME);
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STATIC MP_DEFINE_ATTRTUPLE(
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os_uname_info_obj,
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os_uname_info_fields,
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5,
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(mp_obj_t)&os_uname_info_sysname_obj,
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(mp_obj_t)&os_uname_info_nodename_obj,
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(mp_obj_t)&os_uname_info_release_obj,
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(mp_obj_t)&os_uname_info_version_obj,
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(mp_obj_t)&os_uname_info_machine_obj
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);
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STATIC mp_obj_t os_uname(void) {
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return (mp_obj_t)&os_uname_info_obj;
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_0(os_uname_obj, os_uname);
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/// \function sync()
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/// Sync all filesystems.
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STATIC mp_obj_t os_sync(void) {
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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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// this assumes that vfs->obj is fs_user_mount_t with block device functions
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disk_ioctl(MP_OBJ_TO_PTR(vfs->obj), CTRL_SYNC, NULL);
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}
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return mp_const_none;
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}
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MP_DEFINE_CONST_FUN_OBJ_0(mod_os_sync_obj, os_sync);
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#if MICROPY_HW_ENABLE_RNG
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/// \function urandom(n)
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/// Return a bytes object with n random bytes, generated by the hardware
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/// random number generator.
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STATIC mp_obj_t os_urandom(mp_obj_t num) {
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mp_int_t n = mp_obj_get_int(num);
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vstr_t vstr;
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vstr_init_len(&vstr, n);
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for (int i = 0; i < n; i++) {
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vstr.buf[i] = rng_get();
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}
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return mp_obj_new_str_from_vstr(&mp_type_bytes, &vstr);
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_1(os_urandom_obj, os_urandom);
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#endif
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// Get or set the UART object that the REPL is repeated on.
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// TODO should accept any object with read/write methods.
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STATIC mp_obj_t os_dupterm(mp_uint_t n_args, const mp_obj_t *args) {
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if (n_args == 0) {
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if (MP_STATE_PORT(pyb_stdio_uart) == NULL) {
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return mp_const_none;
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} else {
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return MP_STATE_PORT(pyb_stdio_uart);
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}
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} else {
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if (args[0] == mp_const_none) {
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MP_STATE_PORT(pyb_stdio_uart) = NULL;
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} else if (mp_obj_get_type(args[0]) == &pyb_uart_type) {
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MP_STATE_PORT(pyb_stdio_uart) = args[0];
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} else {
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nlr_raise(mp_obj_new_exception_msg(&mp_type_ValueError, "need a UART object"));
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}
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return mp_const_none;
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}
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}
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MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(mod_os_dupterm_obj, 0, 1, os_dupterm);
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STATIC const mp_map_elem_t os_module_globals_table[] = {
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{ MP_OBJ_NEW_QSTR(MP_QSTR___name__), MP_OBJ_NEW_QSTR(MP_QSTR_uos) },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_uname), (mp_obj_t)&os_uname_obj },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_chdir), (mp_obj_t)&mp_vfs_chdir_obj },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_getcwd), (mp_obj_t)&mp_vfs_getcwd_obj },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_listdir), (mp_obj_t)&mp_vfs_listdir_obj },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_mkdir), (mp_obj_t)&mp_vfs_mkdir_obj },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_remove), (mp_obj_t)&mp_vfs_remove_obj },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_rename),(mp_obj_t)&mp_vfs_rename_obj},
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{ MP_OBJ_NEW_QSTR(MP_QSTR_rmdir), (mp_obj_t)&mp_vfs_rmdir_obj },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_stat), (mp_obj_t)&mp_vfs_stat_obj },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_statvfs), (mp_obj_t)&mp_vfs_statvfs_obj },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_unlink), (mp_obj_t)&mp_vfs_remove_obj }, // unlink aliases to remove
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{ MP_OBJ_NEW_QSTR(MP_QSTR_sync), (mp_obj_t)&mod_os_sync_obj },
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/// \constant sep - separation character used in paths
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{ MP_OBJ_NEW_QSTR(MP_QSTR_sep), MP_OBJ_NEW_QSTR(MP_QSTR__slash_) },
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#if MICROPY_HW_ENABLE_RNG
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{ MP_OBJ_NEW_QSTR(MP_QSTR_urandom), (mp_obj_t)&os_urandom_obj },
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#endif
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// these are MicroPython extensions
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{ MP_OBJ_NEW_QSTR(MP_QSTR_dupterm), (mp_obj_t)&mod_os_dupterm_obj },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_mount), (mp_obj_t)&mp_vfs_mount_obj },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_umount), (mp_obj_t)&mp_vfs_umount_obj },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_VfsFat), (mp_obj_t)&mp_fat_vfs_type },
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};
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STATIC MP_DEFINE_CONST_DICT(os_module_globals, os_module_globals_table);
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const mp_obj_module_t mp_module_uos = {
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.base = { &mp_type_module },
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.globals = (mp_obj_dict_t*)&os_module_globals,
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};
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