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+.\" zip_source_seek.mdoc -- set read offset in source
+.\" Copyright (C) 2014 Dieter Baron and Thomas Klausner
+.\"
+.\" This file is part of libzip, a library to manipulate ZIP archives.
+.\" The authors can be contacted at <libzip@nih.at>
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in
+.\"    the documentation and/or other materials provided with the
+.\"    distribution.
+.\" 3. The names of the authors may not be used to endorse or promote
+.\"    products derived from this software without specific prior
+.\"    written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS
+.\" OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+.\" WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY
+.\" DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
+.\" GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
+.\" IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+.\" OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+.\" IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+.\"
+.Dd November 18, 2014
+.Dt ZIP_SOURCE_SEEK 3
+.Os
+.Sh NAME
+.Nm zip_source_seek
+.Nd set read offset in zip source
+.Sh LIBRARY
+libzip (-lzip)
+.Sh SYNOPSIS
+.In zip.h
+.Ft int
+.Fn zip_source_seek "zip_source_t *zs" "zip_int64_t offset" "int whence"
+.Sh DESCRIPTION
+The function
+.Fn zip_source_seek
+sets the current read offset for the zip source
+.Fa zs
+to
+.Ar offset
+bytes.
+Just like in
+.Xr fseek 3 ,
+depending on the
+.Ar whence
+argument, the
+.Ar offset
+is counted relative from:
+.Bl -tag -width SEEK_CURXX -offset indent
+.It Dv SEEK_SET
+start of file
+.It Dv SEEK_CUR
+current position in file
+.It Dv SEEK_END
+end of file
+.El
+.Sh RETURN VALUES
+.Fn zip_source_seek
+returns 0 on success and \-1 on error.
+.Sh SEE ALSO
+.Xr libzip 3 ,
+.Xr zip_source 3 ,
+.Xr zip_source_read 3 ,
+.Xr zip_source_tell 3
+.Sh AUTHORS
+.An -nosplit
+.An Dieter Baron Aq Mt dillo@nih.at
+and
+.An Thomas Klausner Aq Mt tk@giga.or.at