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Rev 868 Rev 898
Line 446... Line 446...
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  fclose(fd);
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  fclose(fd);
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  return(0);
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  return(0);
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}
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}
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/* tries to write an empty file to drive.
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 * asks DOS to inhibit the int 24h handler for this job, so erros are
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 * gracefully reported - unfortunately this does not work under FreeDOS because
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 * the DOS-C kernel does not implement the required flag.
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 * returns 0 on success (ie. "disk exists and is writeable"). */
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static unsigned short test_drive_write(char drive, char *buff) {
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  unsigned short result = 0;
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  sprintf(buff, "%c:\\SVWRTEST.123", drive);
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  _asm {
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    push ax
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    push bx
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    push cx
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    push dx
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    mov ah, 0x6c   /* extended open/create file */
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    mov bx, 0x2001 /* open for write + inhibit int 24h handler */
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    xor cx, cx     /* file attributes on the created file */
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    mov dx, 0x0010 /* create file if does not exist, fail if it exists */
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    mov si, buff   /* filename to create */
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    int 0x21
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    jc FAILURE
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    /* close the file (handle in AX) */
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    mov bx, ax
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    mov ah, 0x3e /* close file */
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    int 0x21
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    jc FAILURE
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    /* delete the file */
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    mov ah, 0x41 /* delete file pointed out by DS:DX */
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    mov dx, buff
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    int 0x21
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    jnc DONE
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    FAILURE:
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    mov result, ax
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    DONE:
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    pop dx
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    pop cx
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    pop bx
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    pop ax
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  }
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  return(result);
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}
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static int preparedrive(char sourcedrv) {
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static int preparedrive(char sourcedrv) {
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  int driveremovable;
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  int driveremovable;
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  int selecteddrive = 3; /* default to 'C:' */
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  int selecteddrive = 3; /* default to 'C:' */
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  int cselecteddrive;
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  int cselecteddrive;
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  int ds;
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  int ds;
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      video_putstring(9, 1, COLOR_BODY[mono], buff, -1);
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      video_putstring(9, 1, COLOR_BODY[mono], buff, -1);
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      putstringnls(11, 2, COLOR_BODY[mono], 0, 5); /* "Press any key..." */
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      putstringnls(11, 2, COLOR_BODY[mono], 0, 5); /* "Press any key..." */
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      return(MENUQUIT);
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      return(MENUQUIT);
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    }
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    }
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    /* if not formatted, propose to format it right away (try to create a directory) */
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    /* if not formatted, propose to format it right away (try to create a directory) */
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    snprintf(buff, sizeof(buff), "%c:\\SVWRTEST.123", cselecteddrive);
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    if (mkdir(buff) == 0) {
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    if (test_drive_write(cselecteddrive, buff) != 0) {
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      rmdir(buff);
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    } else {
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      const char *list[3];
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      const char *list[3];
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      newscreen(0);
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      newscreen(0);
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      snprintf(buff, sizeof(buff), svarlang_str(3, 3), cselecteddrive); /* "ERROR: Drive %c: seems to be unformated. Do you wish to format it?") */
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      snprintf(buff, sizeof(buff), svarlang_str(3, 3), cselecteddrive); /* "ERROR: Drive %c: seems to be unformated. Do you wish to format it?") */
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      video_putstring(7, 1, COLOR_BODY[mono], buff, -1);
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      video_putstring(7, 1, COLOR_BODY[mono], buff, -1);
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