archive_read_support_format_cpio(3)

Usage

int

Library

Streaming Archive Library (libarchive, -larchive)

Overview

: archive_read_support_format_7zip(), archive_read_support_format_ar(), archive_read_support_format_cab(), archive_read_support_format_cpio(), archive_read_support_format_iso9660(), archive_read_support_format_lha(), archive_read_support_format_mtree(), archive_read_support_format_rar(), archive_read_support_format_rar5(), archive_read_support_format_raw(), archive_read_support_format_tar(), archive_read_support_format_warc(), archive_read_support_format_xar(), archive_read_support_format_zip() Enables support---including auto-detection code---for the specified archive format. For example, archive_read_support_format_tar() enables support for a variety of standard tar formats, old-style tar, ustar, pax interchange format, and many common variants. archive_read_support_format_zip() enables support for both the streaming and the seeking zip readers, which can separately be enabled by respectively archive_read_support_format_zip_streamable() and archive_read_support_format_zip_seekable()
archive_read_support_format_all(): Enables support for all available formats except the “raw” format (see below).
archive_read_support_format_by_code(): Enables a single format specified by the format code. This can be useful when reading a single archive twice; use archive_format() after reading the first time and pass the resulting code to this function to selectively enable only the necessary format support. Note: In statically-linked executables, this will cause your program to include support for every format. If executable size is a concern, you may wish to avoid using this function.
archive_read_support_format_empty(): Enables support for treating empty files as empty archives. Because empty files are valid for several different formats, it is not possible to accurately determine a format for an empty file based purely on contents. So empty files are treated by libarchive as a distinct format.
archive_read_support_format_raw(): The “raw” format handler allows libarchive to be used to read arbitrary data. It treats any data stream as an archive with a single entry. The pathname of this entry is “data”; all other entry fields are unset. This is not enabled by archive_read_support_format_all() in order to avoid erroneous handling of damaged archives.

Return values

These functions return ARCHIVE_OK on success, or ARCHIVE_FATAL.

Errors

Detailed error codes and textual descriptions are available from the archive_errno() and archive_error_string() functions.

History

FreeBSD 16.0-CURRENT (2026-10-27) to FreeBSD 14.4-RELEASE: the text shown here
FreeBSD 14.3-RELEASE to FreeBSD 14.1-RELEASE
FreeBSD 14.0-RELEASE
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