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.\" Copyright (C) 1995 Andries Brouwer (aeb@cwi.nl)
.\"
.\" Permission is granted to make and distribute verbatim copies of this
.\" manual provided the copyright notice and this permission notice are
.\" preserved on all copies.
.\"
.\" Permission is granted to copy and distribute modified versions of this
.\" manual under the conditions for verbatim copying, provided that the
.\" entire resulting derived work is distributed under the terms of a
.\" permission notice identical to this one
.\"
.\" Since the Linux kernel and libraries are constantly changing, this
.\" manual page may be incorrect or out-of-date. The author(s) assume no
.\" responsibility for errors or omissions, or for damages resulting from
.\" the use of the information contained herein. The author(s) may not
.\" have taken the same level of care in the production of this manual,
.\" which is licensed free of charge, as they might when working
.\" professionally.
.\"
.\" Formatted or processed versions of this manual, if unaccompanied by
.\" the source, must acknowledge the copyright and authors of this work.
.\"
.\" Written 10 June 1995 by Andries Brouwer <aeb@cwi.nl>
.\" Modified Thu Oct 31 15:16:23 1996 by Eric S. Raymond <esr@thyrsus.com>
.\"
.TH LLSEEK 2 "10 June 1995" "Linux 1.2.9" "Linux Programmer's Manual"
.SH NAME
_llseek \- reposition read/write file offset
.SH SYNOPSIS
.B #include <unistd.h>
.sp
.B #include <linux/unistd.h>
.sp
.B _syscall5(int, _llseek, uint, fd, ulong, hi, ulong, lo, loff_t *, res, uint, wh);
.sp
.BI "int _llseek(unsigned int " fd ", unsigned long " offset_high ", unsigned long " offset_low ", loff_t * " result ", unsigned int " whence );
.SH DESCRIPTION
The
.B _llseek
function repositions the offset of the file descriptor
.I fd
to
.I (offset_high<<32) | offset_low
bytes relative to the beginning of the file, the current position in the file,
or the end of the file, depending on whether
.I whence
is
.BR SEEK_SET ,
.BR SEEK_CUR ,
or
.BR SEEK_END ,
respectively.
It returns the resulting file position in the argument
.IR result .
.SH "RETURN VALUES"
Upon successful completion,
.B _llseek
returns 0. Otherwise, a value of \-1 is returned and
.I errno
is set to indicate the error.
.SH ERRORS
.TP
.B EBADF
.I fd
is not an open file descriptor.
.TP
.B EINVAL
.I whence
is invalid.
.SH "CONFORMING TO"
This function is Linux-specific, and should not be used in programs
intended to be portable.
.SH BUGS
The ext2 filesystem does not support files with a size of 2GB or more.
.SH "SEE ALSO"
.BR lseek (2)
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