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ARCHIVE_READ_OPTIONS(3)	    Library Functions Manual   ARCHIVE_READ_OPTIONS(3)

NAME
       archive_read_set_filter_option,	       archive_read_set_format_option,
       archive_read_set_option,	archive_read_set_options -- functions control-
       ling options for	reading	archives

LIBRARY
       Streaming Archive Library (libarchive, -larchive)

SYNOPSIS
       int
       archive_read_set_filter_option(struct archive *,	   const char *module,
	   const char *option, const char *value);

       int
       archive_read_set_format_option(struct archive *,	   const char *module,
	   const char *option, const char *value);

       int
       archive_read_set_option(struct archive *,	   const char *module,
	   const char *option, const char *value);

       int
       archive_read_set_options(struct archive *, const	char *options);

DESCRIPTION
       These  functions	provide	a way for libarchive clients to	configure spe-
       cific read modules.

       archive_read_set_filter_option(), archive_read_set_format_option()
	       Specifies an option that	will be	passed to currently-registered
	       filters (including decompression	filters) or format readers.

	       If option and value are both  NULL,  these  functions  will  do
	       nothing and ARCHIVE_OK will be returned.	 If option is NULL but
	       value   is   not,   these   functions   will   do  nothing  and
	       ARCHIVE_FAILED will be returned.

	       If module is not	NULL, option and value will be provided	to the
	       filter or reader	named module.  The return value	will  be  that
	       of the module.  If there	is no such module, ARCHIVE_FAILED will
	       be returned.

	       If  module  is NULL, option and value will be provided to every
	       registered module.  If any module returns  ARCHIVE_FATAL,  this
	       value will be returned immediately.  Otherwise, ARCHIVE_OK will
	       be   returned   if   any	  module   accepts   the  option,  and
	       ARCHIVE_FAILED in all other cases.

       archive_read_set_option()
	       Calls	      archive_read_set_format_option(),		  then
	       archive_read_set_filter_option().   If  either function returns
	       ARCHIVE_FATAL,  ARCHIVE_FATAL  will  be	returned  immediately.
	       Otherwise, greater of the two values will be returned.

       archive_read_set_options()
	       options	is  a  comma-separated list of options.	 If options is
	       NULL or empty, ARCHIVE_OK will be returned immediately.

	       Calls archive_read_set_option() with each option	in  turn.   If
	       any   archive_read_set_option()	 call  returns	ARCHIVE_FATAL,
	       ARCHIVE_FATAL will be returned immediately.

	       Individual options have one of the following forms:
	       option=value
		       The option/value	pair will be provided to every module.
		       Modules that do not accept an  option  with  this  name
		       will ignore it.
	       option  The  option  will  be  provided	to every module	with a
		       value of	"1".
	       !option
		       The option will be provided to every module with	a NULL
		       value.
	       module:option=value, module:option, module:!option
		       As above, but the corresponding option and  value  will
		       be provided only	to modules whose name matches module.

OPTIONS
       Format cab
	       hdrcharset
		       The  value is used as a character set name that will be
		       used when translating file names.
       Format cpio
	       compat-2x
		       Libarchive 2.x incorrectly encoded Unicode filenames on
		       some platforms.	This option mimics the libarchive  2.x
		       filename	 handling  so  that  such archives can be read
		       correctly.
	       hdrcharset
		       The value is used as a character	set name that will  be
		       used when translating file names.
	       pwb     When  reading  a	binary CPIO archive, assume that it is
		       in the original PWB cpio	format,	and handle  file  mode
		       bits accordingly.  The default is to assume v7 format.
       Format iso9660
	       joliet  Support	Joliet	extensions.   Defaults to enabled, use
		       !joliet to disable.
	       rockridge
		       Support RockRidge extensions.  Defaults to enabled, use
		       !rockridge to disable.
       Format lha
	       hdrcharset
		       The value is used as a character	set name that will  be
		       used when translating file names.
       Format mtree
	       checkfs
		       Allow  reading  information missing from	the mtree from
		       the file	system.	 Disabled by default.
       Format rar
	       hdrcharset
		       The value is used as a character	set name that will  be
		       used when translating file names.
       Format tar
	       compat-2x
		       Libarchive 2.x incorrectly encoded Unicode filenames on
		       some  platforms.	 This option mimics the	libarchive 2.x
		       filename	handling so that such  archives	 can  be  read
		       correctly.
	       hdrcharset
		       The  value is used as a character set name that will be
		       used when translating file names.
	       mac-ext
		       Support Mac OS metadata extension that records data  in
		       special	files  beginning with a	period and underscore.
		       Defaults	to enabled on Mac OS, disabled on other	 plat-
		       forms.  Use !mac-ext to disable.
	       read_concatenated_archives
		       Ignore  zeroed blocks in	the archive, which occurs when
		       multiple	tar archives have been concatenated  together.
		       Without	this  option,  only  the contents of the first
		       concatenated archive would be read.
       Format zip
	       compat-2x
		       Libarchive 2.x incorrectly encoded Unicode filenames on
		       some platforms.	This option mimics the libarchive  2.x
		       filename	 handling  so  that  such archives can be read
		       correctly.
	       hdrcharset
		       The value is used as a character	set name that will  be
		       used when translating file names.
	       ignorecrc32
		       Skip the	CRC32 check.  Mostly used for testing.
	       mac-ext
		       Support	Mac OS metadata	extension that records data in
		       special files beginning with a period  and  underscore.
		       Defaults	 to enabled on Mac OS, disabled	on other plat-
		       forms.  Use !mac-ext to disable.

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

SEE ALSO
       tar(1), archive_read(3),	archive_write_set_options(3), libarchive(3)

FreeBSD	14.3		       January 31, 2020	       ARCHIVE_READ_OPTIONS(3)

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