FpPWrite
Positional write: write to file descriptor at a certain position.
Declaration
Source position: bunxh.inc line 89
function FpPWrite(fd: cint; buf: pChar; nbytes: TSize; offset: TOff)
: TsSize;
Description
FpPWrite writes nbytes bytes from buffer buf into file descriptor fd starting at offset offset. Offset is measured from the start of the file. This function can only be used on files, not on pipes or sockets (i.e. any seekable file descriptor).
The function returns the number of bytes actually written, or -1 on error.
Errors
On error, -1 is returned.
See also
| Name | Description |
|---|---|
| FpPRead | Positional read: read from file descriptor at a certain position. |
| FpWriteV | Vector write: Write from multiple buffers to a file descriptor |