usrdosfsold.c

VXWORKS源代码

    )
    {
    DOS_VOL_DESC *	pVolDesc;	/* pointer to dummy volume descriptor */
    int			options;

    dosFsDateTimeSet() ;

    if ( (dosFsMkfsOptions & DOS_OPT_LONGNAMES) == 0 )
        options = DOS_OPT_DEFAULT;
    else
        options = DOS_OPT_VXLONGNAMES;

    /* Init as dosFs device */

    if ( (pVolDesc = dosFsDevInit (pVolName, pBlkDev, NULL)) == NULL )
	return (NULL);

    /* Init dosFs structures on disk */

    if (dosFsVolFormat (pVolName, options, NULL) != OK)
        return NULL;

    return (pVolDesc);
    } /* dosFsMkfs */

/*******************************************************************************
*
* dosFsMkfsOptionsSet - specify volume options for dosFsMkfs()
*
* This function is part of the backward compatibility library delivered
* with the new MS-DOS file system. It is intended to provide the same
* interface as the old version of the MS-DOS file system.
*
* This routine allows long filenames volume option to be set that will be 
* enabled by subsequent calls to dosFsMkfs().  The value of <options> 
* will be used for all volumes that are initialized by dosFsMkfs().
*
* RETURNS: OK always.
*
* SEE ALSO: dosFsMkfs(), dosFsVolOptionsSet()
*  
*/

STATUS dosFsMkfsOptionsSet
    (
    UINT	options		/* options for future dosFsMkfs() calls */
    )
    {
    dosFsMkfsOptions = options;		/* change options */

    return (OK);
    } /* dosFsMkfsOptionsSet */

/*******************************************************************************
*
* dosFsConfigInit - initialize dosFs volume configuration structure
*
* This function is part of the backward compatibility library delivered
* with the new MS-DOS file system. It is intended to provide the same
* interface as the old version of the MS-DOS file system.
*
* Since dosFsDevInit() routine does not take care about the <pConfig> parameter
* now, this routine just return OK.
*
* RETURNS: OK always.
*
* SEE ALSO: dosFsDevInit()
*/

STATUS dosFsConfigInit
    (
    DOS_VOL_CONFIG *	pConfig,	/* pointer to volume config structure */
    char		mediaByte,	/* media descriptor byte */
    UINT8		secPerClust,	/* sectors per cluster */
    short		nResrvd,	/* number of reserved sectors */
    char		nFats,		/* number of FAT copies */
    UINT16		secPerFat,	/* number of sectors per FAT copy */
    short		maxRootEnts,	/* max number of entries in root dir */
    UINT		nHidden,	/* number of hidden sectors */
    UINT		options		/* volume options */
    )
    {
    return (OK);
    } /* dosFsConfigInit */

/*******************************************************************************
*
* dosFsConfigGet - obtain dosFs volume configuration values
*
* This function is part of the backward compatibility library delivered
* with the new MS-DOS file system. It is intended to provide the same
* interface as the old version of the MS-DOS file system.
*
* Since dosFsDevInit() routine does not take care about the <pConfig> parameter
* now, this routine just return OK.
*
* RETURNS: OK always.
*
*/

STATUS dosFsConfigGet
    (
    DOS_VOL_DESC *	pVolDesc,	/* pointer to volume descriptor */
    DOS_VOL_CONFIG *	pConfig		/* ptr to config structure to fill */
    )
    {
    return (OK);
    } /* dosFsConfigGet */

/*******************************************************************************
*
* dosFsConfigShow - display dosFs volume configuration data
*
* This function is part of the backward compatibility library delivered
* with the new MS-DOS file system. It is intended to provide the same
* interface as the old version of the MS-DOS file system.
*
* This routine obtains the dosFs volume configuration for the named
* device, formats the data, and displays it on the standard output.
*
* If no device name is specified, the current default device is described.
*
* RETURNS: OK or ERROR.
*
*/

STATUS dosFsConfigShow
    (
    char                *pDevName        /* name of device */
    )
    {
    return dosFsShow (pDevName, 1);
    } /* dosFsConfigShow */

/*******************************************************************************
*
* dosFsModeChange - modify the mode of a dosFs volume
*
* This function is part of the backward compatibility library delivered
* with the new MS-DOS file system. It is intended to provide the same
* interface as the old version of the MS-DOS file system.
*
* This routine do nothing, because O_RDONLY mod is not implemented in the 
* current release.
*
* RETURNS: N/A
* 
* SEE ALSO: dosFsReadyChange()
*/

void dosFsModeChange
    (
    DOS_VOL_DESC *	pVolDesc,	/* pointer to volume descriptor */
    int			newMod		/* O_RDONLY/O_WRONLY/O_RDWR (both) */
    )
    {
    return;				/* not implemented yet */
    } /* dosFsModeChange */

/*******************************************************************************
*
* dosFsReadyChange - notify dosFs of a change in ready status
*
* This function is part of the backward compatibility library delivered
* with the new MS-DOS file system. It is intended to provide the same
* interface as the old version of the MS-DOS file system.
*
* Since the Disk Cache module takes care about disk removal now, this routine 
* do nothing.
*
* RETURNS: N/A
*/

void dosFsReadyChange
    (
    DOS_VOL_DESC *	pVolDesc	/* pointer to volume descriptor */
    )
    {
    return;				/* unnecessary in new DosFs design */
    } /* dosFsReadyChange */

/*******************************************************************************
*
* dosFsVolOptionsGet - get current dosFs volume options 
*
* This function is part of the backward compatibility library delivered
* with the new MS-DOS file system. It is intended to provide the same
* interface as the old version of the MS-DOS file system.
*
* The main purpose of this routine is to allow dosFsVolOptionsSet() setting of 
* the desired options without clearing of another ones.
* Since the volume options which might be specified in the dosFsVolOptionsSet() 
* call are inapplicable now, this routine just stores zero in the field pointed 
* to by <pOptions> and return OK.
*
* RETURNS: OK, always.
*
* SEE ALSO: dosFsVolOptionsSet()
*
*/

STATUS dosFsVolOptionsGet
    (
    DOS_VOL_DESC *	pVolDesc,	/* pointer to volume descriptor */
    UINT *  	 	pOptions	/* where to put current options value */
    )
    {
    *pOptions = 0;
    return (OK);			/* N/A for new DosFs design */
    } /* dosFsVolOptionsGet */

/*******************************************************************************
*
* dosFsVolOptionsSet - set dosFs volume options 
*
* This function is part of the backward compatibility library delivered
* with the new MS-DOS file system. It is intended to provide the same
* interface as the old version of the MS-DOS file system.
*
* Since the volume options which might be specified in this call are 
* inapplicable now, this routine just returns OK.
* 
* DOS_OPT_CHANGENOWARN - detection of replaced removable disk is automatically
*                        performed by the Disk Cache module.
* DOS_OPT_AUTOSYNC     - set <syncInterval> parameter of dcacheDevTune() 
*                        procedure to 0 to achieve similar behavior.
*
* RETURNS: OK, always.
*
* SEE ALSO: dosFsDevInitOptionsSet(), dosFsMkfsOptionsSet(), 
*	    dosFsVolOptionsGet()
*
*/

STATUS dosFsVolOptionsSet
    (
    DOS_VOL_DESC *	pVolDesc,	/* pointer to volume descriptor */
    UINT    	 	options		/* new options for volume */
    )
    {
    return (OK);			/* N/A for new DosFs design */
    } /* dosFsVolOptionsSet */

/*******************************************************************************
*
* dosFsDateTimeInstall - set system date and time
*
* This is a stub function for backward compatibility only.
* Since the new MS-DOS file system implementation will only use the
* system time and date to set modification and creation times on files,
* this function will simply get the current time and date, and set the
* system time accordingly.
* 
* RETURNS: N/A.
*
* SEE ALSO: dosFsLib, ansiTime
*/
void dosFsDateTimeInstall (FUNCPTR pDateTimeFunc)
    {
    pDosFsDateTimeFunc = pDateTimeFunc ;
    }

/*******************************************************************************
*
* dosFsDateTimeSet - set system time using old dosFs type function
*
*/
LOCAL void dosFsDateTimeSet (void )
    {
    DOS_DATE_TIME dosdt ;	/* old dosFs date time format */
    struct tm tm ;		/* ANSII time format */
    struct timespec tv ;	/* POSIX time */

    if( pDosFsDateTimeFunc == NULL )
	return ;

    /* call the user-supplied function */
    (*pDosFsDateTimeFunc) ( &dosdt );

    /* convert this to ANSI time */
    tm.tm_sec       = dosdt.dosdt_second ;
    tm.tm_min       = dosdt.dosdt_minute ;
    tm.tm_hour      = dosdt.dosdt_hour ;
    tm.tm_mday      = dosdt.dosdt_day ;
    tm.tm_mon       = dosdt.dosdt_month -1 ;
    tm.tm_year      = dosdt.dosdt_year -1900 ;
    tm.tm_wday = 0 ;
    tm.tm_yday = 0 ;
    tm.tm_isdst = 0 ;

    /* convert ANSI to POSIX */
    tv.tv_sec = mktime( &tm );
    tv.tv_nsec = 0;

    /* set system time */
    clock_settime( CLOCK_REALTIME, &tv );
    }