fs/fdos/fdos.c

/*
 * (C) Copyright 2002
 * Stäubli Faverges - <www.staubli.com>
 * Pierre AUBERT  p.aubert@staubli.com
 *
 * See file CREDITS for list of people who contributed to this
 * project.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of
 * the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 */

#include <common.h>
#include <config.h>

#if (CONFIG_COMMANDS & CFG_CMD_FDOS)
#include <malloc.h>
#include "dos.h"
#include "fdos.h"


const char *month [] = {"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};

Fs_t    fs;
File_t  file;

/*-----------------------------------------------------------------------------
 * dos_open -- 
 *-----------------------------------------------------------------------------
 */
int dos_open(char *name)
{
    int lg;
    int entry;
    char *fname;
    
    /* We need to suppress the " char around the name                        */
    if (name [0] == '"') {
        name ++;
    }
    lg = strlen (name);
    if (name [lg - 1] == '"') {
        name [lg - 1] = '\0';
    }

    /* Open file system                                                      */
    if (fs_init (&fs) < 0) {
        return -1;
    }

    /* Init the file descriptor                                              */
    file.name = name;
    file.fs = &fs;
    
    /* find the subdirectory containing the file                             */
    if (open_subdir (&file) < 0) {
        return (-1);
    }

    fname = basename (name);

    /* if we try to open root directory                                      */
    if (*fname == '\0') {
        file.file = file.subdir;
        return (0);
    }
    
    /* find the file in the subdir                                           */
    entry = 0;
    if (vfat_lookup (&file.subdir,
                     file.fs,
                     &file.file.dir,
                     &entry,
                     0,
                     fname,
                     ACCEPT_DIR | ACCEPT_PLAIN | SINGLE | DO_OPEN,
                     0,
                     &file.file) != 0) {
        /* File not found                                                    */
        printf ("File not found\n");
        return (-1);
    }

    return 0;
}

/*-----------------------------------------------------------------------------
 * dos_read -- 
 *-----------------------------------------------------------------------------
 */
int dos_read (ulong addr)
{
    int read = 0, nb;

    /* Try to boot a directory ?                                             */
    if (file.file.dir.attr & (ATTR_DIRECTORY | ATTR_VOLUME)) {
        printf ("Unable to boot %s !!\n", file.name);
        return (-1);
    }
    while (read < file.file.FileSize) {
        PRINTF ("read_file (%ld)\n", (file.file.FileSize - read));
        nb = read_file (&fs,
                        &file.file,
                        (char *)addr + read,
                        read,
                        (file.file.FileSize - read));
        PRINTF ("read_file -> %d\n", nb);
        if (nb < 0) {
            printf ("read error\n");
            return (-1);
        }
        read += nb;
    }
    return (read);
}
/*-----------------------------------------------------------------------------
 * dos_dir -- 
 *-----------------------------------------------------------------------------
 */
int dos_dir (void)
{
    int entry;
    Directory_t dir;
    char *name;
    
    
    if ((file.file.dir.attr & ATTR_DIRECTORY) == 0) {
        printf ("%s: not a directory !!\n", file.name);
        return (1);
    }
    entry = 0;
    if ((name = malloc (MAX_VNAMELEN + 1)) == NULL) {
        PRINTF ("Allcation error\n");
        return (1);
    }
    
    while (vfat_lookup (&file.file,
                        file.fs,
                        &dir,
                        &entry,
                        0,
                        NULL,
                        ACCEPT_DIR | ACCEPT_PLAIN | MATCH_ANY,
                        name,
                        NULL) == 0) {
        /* Display file info                                                 */
        printf ("%3.3s %9d %s %02d %04d %02d:%02d:%02d %s\n",
                (dir.attr & ATTR_DIRECTORY) ? "dir" : "   ",
                __le32_to_cpu (dir.size),
                month [DOS_MONTH (&dir) - 1],
                DOS_DAY (&dir),
                DOS_YEAR (&dir),
                DOS_HOUR (&dir),
                DOS_MINUTE (&dir),
                DOS_SEC (&dir),
                name);
        
    }
    free (name);
    return (0);
}

#endif