MFS_CHGFILEPTR - Move a file's position pointer
Purpose
Move the file's logical read position pointer.
Calling Sequence
int far pascal MFS_CHGFILEPTR(offset, type) long offset; unsigned short type;
Where
offset is the signed offset which depending on the type parameter is used to determine the new position within the file.
type indicates the basis of a seek operation.
| type == 0 | indicates seek relative to beginning of file. |
| type == 1 | indicates seek relative to current position within the file. |
| type == 2 | indicates seek relative to end of file. |
Returns
If no error is detected, a zero error code is returned. If an error is detected, a non-zero error code is returned.
Remarks
The file system may want to take the seek operation as a hint that an I/O operation is about to take place at the new position and initiate a positioning operation on sequential access media or read-ahead operation on other media.