FpPRead
Positional read: read from file descriptor at a certain position.
Declaration
Source position: bunxh.inc line 86
function FpPRead(fd: cint; buf: pChar; nbytes: TSize; offset: TOff)
: TsSize;
Description
FpPRead reads nbytes bytes from file descriptor fd into buffer buf 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 read, or -1 on error.
Errors
On error, -1 is returned.
See also
| Name | Description |
|---|---|
| FpPWrite | Positional write: write to file descriptor at a certain position. |
| FpReadV | Vector read: Read into multiple buffers |