FS_NEWSIZE - Change File's Logical Size
Changes a file's logical (EOD) size.
int far pascal FS_NEWSIZE(psffsi, psffsd, len, IOflag)
struct sffsi far * psffsi;
struct sffsd far * psffsd;
unsigned long len;
unsigned short IOflag;
psffsi is a pointer to the file-system-independent portion of an open file
psffsd is a pointer to the file-system-dependent portion of an open file
len is the desired new length of the file.
IOflag indicates information about the operation on the handle.
IOflag == 0x0010 indicates write-through.
IOflag == 0x0020 indicates no-cache.
The FSD should return an error if an attempt is made to write beyond the
end with a direct access device handle.
The file system driver attempts to set the size (EOD) of the file to
newsize and update sfi_size, if successful. If the new size is larger than
the currently allocated size, the file system driver arranges for for
efficient access to the newly-allocated storage.
Of the information passed in IOflag, the write-through bit is a mandatory
bit in that any data written to the block device must be put out on the
medium before the device driver returns. The no-cache bit, on the other
hand, is an advisory bit that says whether the data being transferred is
worth caching or not.
Created using Inf-PHP v.2 (c) 2003 Yuri Prokushev
Created using Inf-HTML v.0.9b (c) 1995 Peter Childs