FS_FileDateTime

FS_FileDateTime(
 PIOREQ pir
 )
 

The file modification date and time is set and retrieved through FS_FileDateTime. This routine handles the INT 21h function: 57h.

ir_rh

Supplies handle to disk volume or network resource that contains the file.

ir_fh

Supplies FSD file handle.

ir_sfn

Supplies system file number.

ir_flags

Supplies desired command type to perform.

Command Type Values: One of the following types will be specified.
Value	Meaning
GET_MODIFY_DATETIME	Get the file modification date and time.
SET_MODIFY_DATETIME	Set the file modification date and time.
GET_LAST_ACCESS_DATETIME	Get the last access date and time for the file.
SET_LAST_ACCESS_DATETIME	Set the last access date and time for the file.
GET_CREATION_DATE_TIME	Get the creation date and time for the file.
SET_CREATION_DATE_TIME	Set the creation date and time for the file.

ir_dostime

Supplies new date and time for file on all the set commands. The date and time is in DOS format. For SET_LAST_ACCESS_DATETIME, the time field may be 0 indicating that last access time is not supported.

ir_options

Supplies the 10 millisecond intervals for additional precision for the creation time. This field is valid only on the SET_CREATION_DATE_TIME command.

ir_user

Supplies user ID for this request.

ir_pid

Supplies process ID for this request.

ir_error	Returns status of the operation ( 0 if no error, errorcode otherwise ).
ir_dostime	Returns current file date and time on all the get commands. The date and time is in DOS format. For GET_LAST_ACCESS_DATETIME, if only the date is supported, the time field should be set to 0.
ir_options	Returns the 10 millisecond interval on the GET_CREATION_DATE_TIME.

Any fields that are not supported will have an input value if zero. If the FSD does not support any of the date and time fields it should return 0 and not fail the call. The creation time has additional precision over the normal DOS time of 2-second intervals - it gives a precision up to 10 milliseconds, the new parameter specifying the number of 10 millisecond intervals beyond the 2 second precision already stored in the DOS time.