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.\" Copyright (c) 2003-2011 Tim Kientzle
.\" All rights reserved.
.\"
.\" 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.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 AUTHOR OR CONTRIBUTORS 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.
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.\" $FreeBSD$
.\"
.Dd February 2, 2012
.Dt ARCHIVE_READ_HEADER 3
.Os
.Sh NAME
.Nm archive_read_next_header ,
.Nm archive_read_next_header2
.Nd functions for reading streaming archives
.Sh LIBRARY
Streaming Archive Library (libarchive, -larchive)
.Sh SYNOPSIS
.In archive.h
.Ft int
.Fn archive_read_next_header "struct archive *" "struct archive_entry **"
.Ft int
.Fn archive_read_next_header2 "struct archive *" "struct archive_entry *"
.\"
.Sh DESCRIPTION
.Bl -tag -compact -width indent
.It Fn archive_read_next_header
Read the header for the next entry and return a pointer to
a
.Tn struct archive_entry .
This is a convenience wrapper around
.Fn archive_read_next_header2
that reuses an internal
.Tn struct archive_entry
object for each request.
.It Fn archive_read_next_header2
Read the header for the next entry and populate the provided
.Tn struct archive_entry .
.El
.\"
.Sh RETURN VALUES
These functions return
.Cm ARCHIVE_OK
(the operation succeeded),
.Cm ARCHIVE_WARN
(the operation succeeded but a non-critical error was encountered),
.Cm ARCHIVE_EOF
(end-of-archive was encountered),
.Cm ARCHIVE_RETRY
(the operation failed but can be retried),
and
.Cm ARCHIVE_FATAL
(there was a fatal error; the archive should be closed immediately).
.\"
.Sh ERRORS
Detailed error codes and textual descriptions are available from the
.Fn archive_errno
and
.Fn archive_error_string
functions.
.\"
.Sh SEE ALSO
.Xr tar 1 ,
.Xr libarchive 3 ,
.Xr archive_read 3 ,
.Xr archive_read_data 3 ,
.Xr archive_read_extract 3 ,
.Xr archive_read_filter 3 ,
.Xr archive_read_format 3 ,
.Xr archive_read_open 3 ,
.Xr archive_read_set_options 3 ,
.Xr archive_util 3 ,
.Xr tar 5