SYS-SEEK(2)
NAME
seek − change file offset
SYNOPSIS
include "sys.m"; sys := load Sys Sys->PATH;
seek: fn(fd: ref FD, off: big, start: int): big;
DESCRIPTION
Seek sets the 64-bit offset for the file associated with fd as follows:
If start is Sys->SEEKSTART, the offset is set to off bytes.
If start is Sys->SEEKRELA, the pointer is set to its current location plus off.
If start is Sys->SEEKEND, the pointer is set to the size of the file plus off.
The new file offset value is returned.
Seeking in a pipe is not allowed. Seeking in a directory is allowed only if the new offset is zero.