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.Dd February 2, 2012
.Dt ARCHIVE_WRITE_FORMAT 3
.Os
.Sh NAME
.Nm archive_write_set_format_cpio ,
.Nm archive_write_set_format_pax ,
.Nm archive_write_set_format_pax_restricted ,
.Nm archive_write_set_format_shar ,
.Nm archive_write_set_format_shar_dump ,
.Nm archive_write_set_format_ustar
.Nd functions for creating archives
.Sh LIBRARY
Streaming Archive Library (libarchive, -larchive)
.Sh SYNOPSIS
.In archive.h
.Ft int
.Fn archive_write_set_format_cpio "struct archive *"
.Ft int
.Fn archive_write_set_format_pax "struct archive *"
.Ft int
.Fn archive_write_set_format_pax_restricted "struct archive *"
.Ft int
.Fn archive_write_set_format_shar "struct archive *"
.Ft int
.Fn archive_write_set_format_shar_dump "struct archive *"
.Ft int
.Fn archive_write_set_format_ustar "struct archive *"
.Sh DESCRIPTION
These functions set the format that will be used for the archive.
.Pp
The library can write
POSIX octet-oriented cpio format archives,
POSIX-standard
.Dq pax interchange
format archives,
traditional
.Dq shar
archives,
enhanced
.Dq dump
shar archives that store a variety of file attributes and handle binary files,
and
POSIX-standard
.Dq ustar
archives.
The pax interchange format is a backwards-compatible tar format that
adds key/value attributes to each entry and supports arbitrary
filenames, linknames, uids, sizes, etc.
.Dq Restricted pax interchange format
is the library default; this is the same as pax format, but suppresses
the pax extended header for most normal files.
In most cases, this will result in ordinary ustar archives.
.\"
.Sh RETURN VALUES
These functions return
.Cm ARCHIVE_OK
on success, or
.Cm ARCHIVE_FATAL .
.\"
.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_write 3 ,
.Xr archive_write_set_options 3 ,
.Xr cpio 5 ,
.Xr mtree 5 ,
.Xr tar 5