path: root/avr/cmd_fat.c

/*
 * (C) Copyright 2014,2016,2018 Leo C. <erbl259-lmu@yahoo.de>
 *
 * SPDX-License-Identifier:	GPL-2.0
 */

/*
 * FAT filesystem commands
 */

#include "common.h"
#include "cmd_fat.h"
#include <time.h>
uint32_t fat_time(const struct tm * timeptr);

#include "ff.h"
#include "z80-if.h"
#include "eval_arg.h"
#include "con-utils.h"
#include "print-utils.h"
#include "timer.h"
#include "debug.h"
#include "env.h"
#include "getopt-min.h"

#define DEBUG_LS		0	/* set to 1 to debug */
#define DEBUG_RM		0	/* set to 1 to debug */
#define DEBUG_CP		0	/* set to 1 to debug */

#define debug_ls(fmt, args...)                                                 \
	debug_cond(DEBUG_LS, fmt, ##args)
#define debug_rm(fmt, args...)                                                 \
	debug_cond(DEBUG_RM, fmt, ##args)
#define debug_cp(fmt, args...)                                                 \
	debug_cond(DEBUG_CP, fmt, ##args)


/* TODO: use memory size test function (z80_memsize_detect() ) */
#define MAX_MEMORY		CONFIG_SYS_RAMSIZE_MAX
#define BUFFER_SIZE		FF_MAX_SS
#define CPY_BUF_SIZE	(2*FF_MAX_SS)
#define PATH_MAX		CONFIG_SYS_MAX_PATHLEN


/*
 * Multible (fat) partitions per physical drive are not supported,
 * but we have up to 2 sdcard slots.
 */
static FATFS FatFs0;
static FATFS FatFs1;

void setup_fatfs(void)
{
	f_mount(&FatFs0, "0:", 0);
	f_mount(&FatFs1, "1:", 0);
}

DWORD get_fattime (void)
{
	time_t timer;
	struct tm tm_timer;

	time(&timer);
	gmtime_r(&timer, &tm_timer);

	return fat_time(&tm_timer);
}


static
bool check_abort(void)
{
	bool ret = ctrlc();

	if (ret)
		printf_P(PSTR("Abort\n"));

	return ret;
}


static const FLASH char * const FLASH rc_strings[] = {
			FSTR("Success"),
			FSTR("Disk error"),
			FSTR("Internal error"),
			FSTR("Not ready"),
			FSTR("No file"),
			FSTR("No path"),
			FSTR("Invalid name"),
			FSTR("Denied"),
			FSTR("Exist"),
			FSTR("Invalid object"),
			FSTR("Write protected"),
			FSTR("Invalid drive"),
			FSTR("Not enabled"),
			FSTR("No file system"),
			FSTR("Mkfs aborted"),
			FSTR("Timeout"),
			FSTR("Locked"),
			FSTR("Not enough core"),
			FSTR("Too many open files"),
			FSTR("Invalid parameter")
		};


const FLASH char * fat_rctostr(FRESULT rc)
{
	return 	rc < ARRAY_SIZE(rc_strings) ? rc_strings[rc] : PSTR(" Unknown Error");
}

static
void swirl(void)
{
	static const FLASH char swirlchar[] = { '-','\\','|','/' };
	static uint_fast8_t cnt;
	static uint32_t tstamp;

	if (get_timer(0) > tstamp) {
		tstamp = get_timer(0) + 250;
		putchar('\b');
		cnt = (cnt+1) & 3;
		putchar(swirlchar[cnt]);
	}
}

static
void print_dirent(FILINFO *f)
{
	printf_P(PSTR("%c%c%c%c%c %u/%02u/%02u %02u:%02u %9lu  %s\n"),
				(f->fattrib & AM_DIR) ? 'D' : '-',
				(f->fattrib & AM_RDO) ? 'R' : '-',
				(f->fattrib & AM_HID) ? 'H' : '-',
				(f->fattrib & AM_SYS) ? 'S' : '-',
				(f->fattrib & AM_ARC) ? 'A' : '-',
				(f->fdate >> 9) + 1980, (f->fdate >> 5) & 15, f->fdate & 31,
				(f->ftime >> 11), (f->ftime >> 5) & 63,
				f->fsize, f->fname);
}

static
char *path_split(char *p)
{
	if (isdigit(p[0]) && (p[1] == ':'))
		p += 2;

	char *ps = strrchr(p, '/');
	if (ps) {
		if (ps == p) {
			++ps;
			memmove(ps+1, ps, strlen(ps)+1);
		}
		*ps++ = '\0';
	}

	return ps;
}


typedef void (*fatfunc_t)(const TCHAR* path_old, const TCHAR* path_new);

command_ret_t exit_val;
uint8_t cmd_flags;
#define I_FLAG	(1<<1)	// prompt before overwrite (overrides a previous -n option)
#define N_FLAG	(1<<2)	// do not overwrite an existing file (overrides a previous -i option)
#define F_FLAG	(1<<3)	// overwrite existing file ignoring write protection
#define P_FLAG	(1<<4)	// preserve attributes and timestamps
#define V_FLAG	(1<<5)	// explain what is being done


/*
 * Copy File
*/
static
FRESULT copy_file(const TCHAR* src, const TCHAR* dst)
{
    FIL fsrc, fdst;
    FRESULT res;

	/* File copy buffer */
	uint8_t *buffer = (uint8_t *) malloc(CPY_BUF_SIZE);
	if (buffer == NULL) {
		res = (FRESULT) ENOMEM;
	} else {

		/* Open source file */
		res = f_open(&fsrc, src, FA_READ);
		if (res == FR_OK) {

			/* Create destination file */
			res = f_open(&fdst, dst, FA_WRITE | FA_CREATE_NEW);
			if (res == FR_OK) {
				UINT br, bw; 						/* File read/write count */

				/* Copy source to destination */
				for (;;) {
					res = f_read(&fsrc, buffer, CPY_BUF_SIZE, &br); /* Read a chunk of source file */
					if (res || br == 0)
						break; 						/* error or eof */
					res = f_write(&fdst, buffer, br, &bw); /* Write it to the destination file */
					if (res != FR_OK)
						break;
					if (bw < br) {
						res = (FRESULT) EFULL;		/* disk full */
						break;
					}
				}

				f_close(&fdst);
				if (res != FR_OK)
					f_unlink(dst);
			}
			f_close(&fsrc);
		}
		free(buffer);
	}

    return res;
}

static
void ff_remove(const TCHAR *file, const TCHAR *dest UNUSED)
{
    FRESULT res = FR_OK;

	debug_rm("==== ff_remove: '%s'\n", file);

	if (!(cmd_flags & N_FLAG)) {
		if ((res = f_unlink(file)) == FR_OK) {
			if (cmd_flags & V_FLAG)
				printf_P(PSTR("removed: '%s'\n"), file);
		} else {
			cmd_error(0, res, PSTR("cannot remove '%s'"), file);
		}
	} else {
		printf_P(PSTR("not removed: '%s'\n"), file);
	}

	exit_val = (res != FR_OK);
	return;
}

static
void ff_copy(const TCHAR* path_old, const TCHAR* path_new)
{
    FRESULT res;

	debug_cp("==== ff_copy: '%s' --> '%s'\n", path_old, path_new);

	if (cmd_flags & V_FLAG)
		printf_P(PSTR("'%s' -> '%s'\n"), path_old, path_new);
    if ((res = copy_file(path_old, path_new)) != FR_OK)
		cmd_error(0, res, PSTR("error copying '%s' to '%s'"), path_old, path_new);

	exit_val = (res != FR_OK);
    return;
}

static
void ff_move(const TCHAR* path_old, const TCHAR* path_new)
{
    FRESULT res;

	if (cmd_flags & V_FLAG)
		printf_P(PSTR("'%s' -> '%s'\n"), path_old, path_new);
    if ((res = f_rename(path_old, path_new)) != FR_OK)
		cmd_error(0, res, PSTR("error copying '%s' to '%s'"), path_old, path_new);

	exit_val = (res != FR_OK);
    return;
}

static
void ff_iterate(fatfunc_t fatfunc, int count, char* const file[], char* dest)
{
    FRESULT res = 0;
	DIR dir;
	FILINFO finfo;
    char srcpath[PATH_MAX], destpath[PATH_MAX];
	uint8_t dest_is_dir = 0;

	if (dest != NULL) {
		if (f_opendir(&dir, dest) == FR_OK) {
			dest_is_dir = 1;
			f_closedir(&dir);
		} else if (f_stat(dest, &finfo) == FR_OK && finfo.fattrib & AM_DIR)
			dest_is_dir = 1;
	}

    for (uint8_t i = 0; i < count; i++) {
        char* pattern = NULL;
        strcpy(srcpath, file[i]);
        char* p1 = path_split(srcpath);

        if (p1 != NULL) {
			pattern = (char *) malloc(strlen(p1)+1);
			strcpy(pattern, p1);
		}
        if (pattern != NULL) {
            res = f_findfirst(&dir, &finfo, srcpath, pattern);
			p1 = srcpath+strlen(srcpath)-1;
				if (*p1++ != '/')
					*(p1++) = '/';
        } else {
            res = f_findfirst(&dir, &finfo, ".", file[i]);
            p1 = srcpath;
		}
		if ((res != FR_OK) || (finfo.fname[0] == 0))  {
			cmd_error(0, res, PSTR("'%s': no such file or directory"), file[i]);
			exit_val = CMD_RET_FAILURE;
		} else {

			while (res == FR_OK && finfo.fname[0] != 0) {
				strcpy(p1, finfo.fname);
				if (dest != NULL) {
					strcpy(destpath, dest);
					if (dest_is_dir) {
						if (destpath[strlen(destpath) - 1] != '/')
							strcat_P(destpath, PSTR("/"));
						strcat(destpath, finfo.fname);
					}
				}
				fatfunc(srcpath, destpath);
				res = f_findnext(&dir, &finfo);
			}
			if (res != FR_OK)
				cmd_error(CMD_RET_FAILURE, res, PSTR("error enumerating files"));
		}
        f_closedir(&dir);
        free(pattern);
    }
}

/*
 * pwd - Print current directory of the current drive.
 *
 */
command_ret_t do_pwd(cmd_tbl_t *cmdtp UNUSED, uint_fast8_t flag UNUSED, int argc UNUSED, char * const argv[] UNUSED)
{
	FRESULT res;
	TCHAR buf[PATH_MAX];

	res = f_getcwd(buf, PATH_MAX);  /* Get current directory path */

	if (res != FR_OK)
		cmd_error(CMD_RET_FAILURE, res, NULL);

	puts(buf);

	return CMD_RET_SUCCESS;
}


/*
 * cd - Change the current/working directory.
 *
 */
command_ret_t do_cd(cmd_tbl_t *cmdtp UNUSED, uint_fast8_t flag UNUSED, int argc, char * const argv[])
{
	TCHAR *path;
	FRESULT res = FR_OK;

	if (argc < 2) {
		path = getenv_str(PSTR(ENV_HOME));
		if (path == NULL) {
			cmd_error(CMD_RET_FAILURE, 0, PSTR("\"%S\" not set"), PSTR(ENV_HOME));
		}
	} else
		path = argv[1];

	if (strlen(path) > 1 && path[1] == ':')
		res = f_chdrive(path);

	if (res == FR_OK)
		res = f_chdir(path);

	if (res != FR_OK)
		cmd_error(CMD_RET_FAILURE, res, NULL);

	return CMD_RET_SUCCESS;
}


command_ret_t do_mkdir(cmd_tbl_t *cmdtp UNUSED, uint_fast8_t flag UNUSED, int argc, char * const argv[])
{
	int ret = CMD_RET_SUCCESS;
    FRESULT res;

    if (argc < 1)
		return CMD_RET_USAGE;

    for (uint8_t i = 1; i < argc; i++) {
        if ((res = f_mkdir(argv[i])) != FR_OK) {
			ret = CMD_RET_FAILURE;
			cmd_error(0, res, PSTR("cannot create directory '%s'"), argv[i]);
		}
    }
    return ret;
}

/*
 * ls path - Directory listing
 *
 */
command_ret_t do_ls(cmd_tbl_t *cmdtp UNUSED, uint_fast8_t flag UNUSED, int argc, char * const argv[])
{
	FATFS *fs;
	DIR dir;					/* Directory object */
	FILINFO finfo;
	unsigned long p1;
	unsigned int s1, s2;
	FRESULT res = FR_OK;
	char buf[PATH_MAX];
	char *path = buf;
	char *pattern;


	memset(buf, 0, PATH_MAX);
	if (argc < 2) {
		buf[0] = '.';
	} else {
		strncpy(path, argv[1], PATH_MAX-1);
	}
	pattern = path_split(path);
	debug_ls("### path, pattern: '%s', '%s'\n", path[0] ? path : "<NULL>", pattern ? pattern : "<NULL>");

	if (pattern == NULL) {
        res = f_opendir(&dir, path);
        if (res == FR_NO_PATH || res == FR_INVALID_NAME) {
			pattern = path;
            path = ".";
        } else if (res != FR_OK) {
			cmd_error(CMD_RET_FAILURE, res, PSTR("'%s'"), path);
        }
    }
	debug_ls("### path, pattern: '%s', '%s'\n", path, pattern ? pattern : "<NULL>");

    if (pattern == NULL || *pattern == '\0')
		pattern = "*";

	debug_ls("### path, pattern: '%s', '%s'\n", path, pattern ? pattern : "<NULL>");

	res = f_findfirst(&dir, &finfo, path, pattern);

	p1 = s1 = s2 = 0;
	for(;;) {
		if (res != FR_OK)
			cmd_error(CMD_RET_FAILURE, res, NULL);
		if (!finfo.fname[0])
			break;
		if (finfo.fattrib & AM_DIR) {
			s2++;
		} else {
			s1++; p1 += finfo.fsize;
		}
		print_dirent(&finfo);
		if (check_abort())
			break;
		res = f_findnext(&dir, &finfo);
	}

	if (res == FR_OK) {
		printf_P(PSTR("%4u File(s),%10lu bytes total\n%4u Dir(s)"), s1, p1, s2);
		if (f_getfree(path, (DWORD*)&p1, &fs) == FR_OK)
			printf_P(PSTR(", %10luK bytes free\n"), p1 * fs->csize / 2);
	}

	if (res)
		cmd_error(CMD_RET_FAILURE, res, NULL);

	return CMD_RET_SUCCESS;
}

command_ret_t do_rm(cmd_tbl_t *cmdtp UNUSED, uint_fast8_t flag UNUSED, int argc, char * const argv[])
{
	exit_val = CMD_RET_SUCCESS;
	cmd_flags = 0;

	int opt;
	while ((opt = getopt(argc, argv, PSTR("nv"))) != -1) {
		switch (opt) {
			case 'n':
				cmd_flags |=  N_FLAG;
				break;
			case 'v':
				cmd_flags |=  V_FLAG;
				break;
			default:
				return CMD_RET_USAGE;
				break;
		}
	}
	argc -= optind;
	argv += optind;

	debug_rm("==== do_rm:     argc, argv[0]: %d, '%s'\n", argc, argv[0]);

    if (argc < 1)
		return CMD_RET_USAGE;

    ff_iterate(ff_remove, argc, argv, NULL);

	return exit_val;
}

command_ret_t do_cp_or_mv(cmd_tbl_t *cmdtp UNUSED, uint_fast8_t flag UNUSED, int argc, char * const argv[])
{
	exit_val = CMD_RET_SUCCESS;
	cmd_flags = 0;
	fatfunc_t func = (argv[0][0] == 'c') ? ff_copy : ff_move;

	int opt;
	while ((opt = getopt(argc, argv, PSTR("v"))) != -1) {
		switch (opt) {
			case 'v':
				cmd_flags |=  V_FLAG;
				break;
			default:
				return CMD_RET_USAGE;
				break;
		}
	}
	argc -= optind;
	argv += optind;

	debug_cp("==== do_rm:     argc, argv[0]: %d, '%s'\n", argc, argv[0]);

    if (argc < 2)
		return CMD_RET_USAGE;

    ff_iterate(func, argc - 1, argv, argv[argc - 1]);

    return exit_val;
}

/* Work register for fs command */
struct stat_dat_s {
	DWORD AccSize;
	WORD  AccFiles, AccDirs;
	FILINFO finfo;
};

static
FRESULT scan_files (
	char *path,			/* Pointer to the working buffer with start path */
	struct stat_dat_s *statp
)
{
	DIR dirs;
	FRESULT res;
	int i;
	char *fn;

	res = f_opendir(&dirs, path);
	swirl();
	if (res == FR_OK) {
		i = strlen(path);
		while (((res = f_readdir(&dirs, &statp->finfo)) == FR_OK) &&
					statp->finfo.fname[0]) {
			if (FF_FS_RPATH && statp->finfo.fname[0] == '.')
				continue;
			fn = statp->finfo.fname;
			if (statp->finfo.fattrib & AM_DIR) {
				statp->AccDirs++;
				path[i] = '/';
				strcpy(path+i+1, fn);
				res = scan_files(path, statp);
				path[i] = '\0';
				if (res != FR_OK)
					break;
			} else {
				//printf_P(PSTR("%s/%s\n"), path, fn);
				statp->AccFiles++;
				statp->AccSize += statp->finfo.fsize;
			}
			if (check_abort()) {
				res = 255;
				break;
			}
		}
	}

	return res;
}


/*
 * fatstat path - Show logical drive status
 *
 */
command_ret_t do_stat(cmd_tbl_t *cmdtp UNUSED, uint_fast8_t flag UNUSED, int argc, char * const argv[])
{
	FATFS *fs;
	DWORD nfreeclst;
	FRESULT res;
	char *buf;
	char *path = "";
	struct stat_dat_s statp;

	buf = (char *) malloc(PATH_MAX);
	if (buf == NULL)
		cmd_error(CMD_RET_FAILURE, ENOMEM, NULL);

	if (argc > 1)
		path = argv[1];
	res = f_getfree(path, &nfreeclst, &fs);
	if (!res) {
		printf_P(PSTR(
					"FAT type:                %u\n"
					"Bytes/Cluster:           %lu\n"
					"Number of FATs:          %u\n"
					"Root DIR entries:        %u\n"
					"Sectors/FAT:             %lu\n"
					"Number of clusters:      %lu\n"
					"FAT start (lba):         %lu\n"
					"DIR start (lba,cluster): %lu\n"
					"Data start (lba):        %lu\n"),
				fs->fs_type, (DWORD)fs->csize * 512, fs->n_fats,
				fs->n_rootdir, fs->fsize, fs->n_fatent - 2,
				fs->fatbase, fs->dirbase, fs->database);

#if FF_USE_LABEL
		DWORD serial;
		res = f_getlabel(path, buf, &serial);
		if (!res) {
			printf_P(PSTR(
						"Volume name:             %s\n"
						"Volume S/N:              %04X-%04X\n"),
					buf, (WORD)(serial >> 16), (WORD)(serial & 0xFFFF));
		}
#endif
		if (!res) {
			statp.AccSize = statp.AccFiles = statp.AccDirs = 0;
			strcpy(buf, path);

			my_puts_P(PSTR("\nCounting...  "));
			res = scan_files(buf, &statp);
			putchar('\r');
		}
		if (!res) {
			printf_P(PSTR("%u files, %lu bytes.\n%u folders.\n"
						 "%lu KB total disk space.\n%lu KB available.\n"),
					statp.AccFiles, statp.AccSize, statp.AccDirs,
					(fs->n_fatent - 2) * (fs->csize / 2), nfreeclst * (fs->csize / 2)
			);
		}
	}

	free(buf);
	if (res)
		cmd_error(CMD_RET_FAILURE, res, NULL);

	return CMD_RET_SUCCESS;
}

/*
 * tst path - for debugging: test access with different functions
 *
 */
command_ret_t do_tst(cmd_tbl_t *cmdtp UNUSED, uint_fast8_t flag UNUSED, int argc, char * const argv[])
{
	DIR Dir;					/* Directory object */
	FILINFO finfo;
	FRESULT res = FR_OK;
	char buf[BUFFER_SIZE];
	char *path = "";
	char *pattern = "*";

	printf_P(PSTR("sizeof DIR: %u, sizeof FIL: %u\n"), sizeof (DIR), sizeof (FILINFO));

	res = f_getcwd(buf, BUFFER_SIZE);  /* Get current directory path */

	printf_P(PSTR("cwd: '%s', --> res: %d, %S\n"), buf, res, fat_rctostr(res));

	if (argc > 1)
		path = argv[1];
	if (argc > 2)
		pattern = argv[2];
	printf_P(PSTR("arg: '%s' '%s'\n"), path, pattern);

	res = f_stat(path, &finfo);
	printf_P(PSTR("f_stat:         --> res: %d, %S\n"), res, fat_rctostr(res));
	if (res == FR_OK) print_dirent(&finfo);

	res = f_opendir(&Dir, path);
	printf_P(PSTR("f_opendir:      --> res: %d, %S\n"), res, fat_rctostr(res));
	f_closedir(&Dir);

	res = f_findfirst(&Dir, &finfo, path, pattern);
	printf_P(PSTR("f_findfirst:    --> res: %d, %S\n"), res, fat_rctostr(res));
	if (res == FR_OK) print_dirent(&finfo);
	f_closedir(&Dir);

	return CMD_RET_SUCCESS;
}

/*
 * fatread/write - load binary file to/from a dos filesystem
 *		read  <d:/path/filename> <addr> [bytes [pos]]
 *		write <d:/path/filename> <addr> <bytes>
 */
command_ret_t do_rw(cmd_tbl_t *cmdtp UNUSED, uint_fast8_t flag UNUSED, int argc, char * const argv[])
{
	FIL File;
	uint32_t addr;
	unsigned long bytes;
	unsigned long pos;
	unsigned long bytes_rw;

	bool dowrite = (argv[0][0] == 'w');
	FRESULT res = FR_OK;
	bool buserr = 0;
	uint32_t timer;
	uint8_t *buffer;

	if (argc < (dowrite ? 4 : 3))
		return CMD_RET_USAGE;

	addr = eval_arg(argv[2], NULL);
	if (addr >= MAX_MEMORY)
		cmd_error(CMD_RET_FAILURE, 0, PSTR("Address too high: %#lx"), addr);

	if (argc > 3)
		bytes = eval_arg(argv[3], NULL);
	else
		bytes = MAX_MEMORY;
	if (argc > 4)
		pos = eval_arg(argv[4], NULL);
	else
		pos = 0;

	if (addr + bytes > MAX_MEMORY)
		bytes = MAX_MEMORY - addr;

	buffer = (uint8_t *) malloc(BUFFER_SIZE);
	if (buffer == NULL)
		cmd_error(CMD_RET_FAILURE, ENOMEM, NULL);

	res = f_open(&File, argv[1], dowrite ? FA_WRITE | FA_CREATE_ALWAYS
										 : FA_READ );

	if (!res) {
		res = f_lseek(&File, pos);
		if (!res) {
			bytes_rw = 0;
			timer = get_timer(0);
			while (bytes) {
				unsigned int cnt, br;

				if (bytes >= BUFFER_SIZE)	{
					cnt = BUFFER_SIZE;
					bytes -= BUFFER_SIZE;
				} else {
					cnt = bytes; bytes = 0;
				}
				if (dowrite) {
					if (!(z80_bus_cmd(Request) & ZST_ACQUIRED)) {
						buserr = 1;
						break;
					}
					z80_read_block(buffer, addr, cnt);
					z80_bus_cmd(Release);
					res = f_write(&File, buffer, cnt, &br);
					if (res != FR_OK)
						break;
				} else {
					res = f_read(&File, buffer, cnt, &br);
					if (res != FR_OK)
						break;
					if (!(z80_bus_cmd(Request) & ZST_ACQUIRED)) {
						buserr = 1;
						break;
					}
					z80_write_block(buffer, addr, br);
					z80_bus_cmd(Release);
				}
				addr += br;

				bytes_rw += br;
				if (cnt != br) {
					if (dowrite)
						printf_P(PSTR("Disk full?\n"));
					break;
				}
				if (check_abort())
					break;
			}

			FRESULT fr = f_close(&File);
			if (!res)
				res = fr;
			timer = get_timer(timer);
			printf_P(PSTR("%lu (%#lx) bytes read/written with %lu bytes/sec.\n"),
						bytes_rw, bytes_rw, timer ? (bytes_rw * 1000 / timer) : 0);
		}
	}

	free(buffer);

	if (res)
		cmd_error(CMD_RET_FAILURE, res, PSTR("'%s'"), argv[1]);
	if (buserr)
		cmd_error(CMD_RET_FAILURE, EBUSTO, NULL);

	return CMD_RET_SUCCESS;
}

/*
 * command table for fat subcommands
 */

cmd_tbl_t cmd_tbl_fat[] = {
CMD_TBL_ITEM(
	status,	2,	CTBL_RPT,	do_stat,
	"Show logical drive status",
	"dev"
),
CMD_TBL_ITEM(
	pwd,	2,	CTBL_RPT|CTBL_SUBCMDAUTO,	do_pwd,
	"Print name of current/working directory",
	""
),
CMD_TBL_ITEM(
	cd,		2,	0|CTBL_SUBCMDAUTO,			do_cd,
	"Change the current/working directory.",
	"path"
),
CMD_TBL_ITEM(
	mkdir,		CONFIG_SYS_MAXARGS,	0,		do_mkdir,
	"Create the DIRECTORY(ies), if they do not already exist.",
	"DIRECTORY..."
),
CMD_TBL_ITEM(
	mkdir,		CONFIG_SYS_MAXARGS,	0|CTBL_SUBCMDAUTO,		do_mkdir,
	"Create the DIRECTORY(ies), if they do not already exist.",
	"DIRECTORY..."
),
CMD_TBL_ITEM(
	ls,		2,	CTBL_RPT|CTBL_SUBCMDAUTO,	do_ls,
	"Directory listing",
	"path"
),
CMD_TBL_ITEM(
	rm,		CONFIG_SYS_MAXARGS,	0,			do_rm,
	"Remove FILE(s) or empty DIRECTORY(ies)",
	"[OPTION]... [FILE]...\n"
	//"    -i prompt before removal\n"
	"    -n do not remove\n"
	"    -v explain what is being done"
),
CMD_TBL_ITEM(
	rm,		CONFIG_SYS_MAXARGS,	0|CTBL_SUBCMDAUTO,			do_rm,
	"Remove FILE(s) or empty DIRECTORY(ies)",
	"[OPTION]... [FILE]...\n"
	//"    -i prompt before removal\n"
	"    -n do not remove\n"
	"    -v explain what is being done"
),
CMD_TBL_ITEM(
	cp,	CONFIG_SYS_MAXARGS,	0,	do_cp_or_mv,
	"Copy SOURCE to DEST, or multiple SOURCE(s) to DIRECTORY.",
	"[OPTION]... SOURCE... DEST\n"
//	"    -f overwrite existing file ignoring write protection\n"
//	"       this option is ignored when the -n option is also used\n"
//	"    -i prompt before overwrite (overrides a previous -n option)\n"
//	"    -n do not overwrite an existing file (overrides a previous -i option)\n"
//	"    -p preserve attributes and timestamps\n"
	"    -v explain what is being done"
),
CMD_TBL_ITEM(
	cp,	CONFIG_SYS_MAXARGS,	0|CTBL_SUBCMDAUTO,	do_cp_or_mv,
	"Copy SOURCE to DEST, or multiple SOURCE(s) to DIRECTORY.",
	"[OPTION]... SOURCE... DEST\n"
//	"    -f overwrite existing file ignoring write protection\n"
//	"       this option is ignored when the -n option is also used\n"
//	"    -i prompt before overwrite (overrides a previous -n option)\n"
//	"    -n do not overwrite an existing file (overrides a previous -i option)\n"
//	"    -p preserve attributes and timestamps\n"
	"    -v explain what is being done"
),
CMD_TBL_ITEM(
	mv,	CONFIG_SYS_MAXARGS,	0,	do_cp_or_mv,
	"Rename SOURCE to DEST, or move SOURCE(s) to DIRECTORY.",
	"[OPTION]... SOURCE DEST\n"
	"    -v explain what is being done"
),
CMD_TBL_ITEM(
	mv,	CONFIG_SYS_MAXARGS,	0|CTBL_SUBCMDAUTO,	do_cp_or_mv,
	"Rename SOURCE to DEST, or move SOURCE(s) to DIRECTORY.",
	"[OPTION]... SOURCE DEST\n"
	"    -v explain what is being done"
),
CMD_TBL_ITEM(
	tst,	3,	CTBL_DBG|CTBL_RPT,	do_tst,
	"FatFS test function",
	"[path [pattern]]"
),
CMD_TBL_ITEM(
	load,	5,	0,	do_rw,
	"load binary file from a dos filesystem",
	"<d:/path/filename> <addr> [bytes [pos]]\n"
	"    - Load binary file 'path/filename' on logical drive 'd'\n"
	"      to address 'addr' from dos filesystem.\n"
	"      'pos' gives the file position to start loading from.\n"
	"      If 'pos' is omitted, 0 is used. 'pos' requires 'bytes'.\n"
	"      'bytes' gives the size to load. If 'bytes' is 0 or omitted,\n"
	"      the load stops on end of file."
),
CMD_TBL_ITEM(
	write,	4,	0,			do_rw,
	"write file into a dos filesystem",
	"<d:/path/filename> <addr> <bytes>\n"
	"    - Write file to 'path/filename' on logical drive 'd' from RAM\n"
	"      starting at address 'addr'.\n"
),

CMD_TBL_ITEM(
	help,	CONFIG_SYS_MAXARGS,	CTBL_RPT,	do_help,
	"Print sub command description/usage",
	"\n"
	"       - print brief description of all sub commands\n"
	"fat help command ...\n"
	"       - print detailed usage of sub cmd 'command'"
),

/* This does not use the CMD_TBL_ITEM macro as ? can't be used in symbol names */
	{FSTR("?"),   CONFIG_SYS_MAXARGS, 1, do_help,
	 NULL,
#ifdef  CONFIG_SYS_LONGHELP
	FSTR(""),
#endif /* CONFIG_SYS_LONGHELP */
	NULL,
#ifdef CONFIG_AUTO_COMPLETE
	NULL,
#endif
},
/* Mark end of table */
CMD_TBL_END(cmd_tbl_fat)
};


command_ret_t do_fat(cmd_tbl_t *cmdtp UNUSED, uint_fast8_t flag UNUSED, int argc UNUSED, char * const argv[] UNUSED)
{
	puts_P(PSTR("Huch?"));

	return CMD_RET_USAGE;
}