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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  controlling
     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 specific
     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 re-
	     turned.

	     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 re-
	     turned.

	     If  module is NULL, option and value will be provided to every reg-
	     istered module.  If any module returns  ARCHIVE_FATAL,  this  value
	     will  be  returned  immediately.  Otherwise, ARCHIVE_OK will be re-
	     turned 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_fil-
	     ter_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  cor-
		     rectly.
	     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 ac-
		     cordingly.  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 cor-
		     rectly.
	     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 spe-
		     cial files beginning with a  period  and  underscore.   De-
		     faults  to  enabled on Mac OS, disabled on other platforms.
		     Use !mac-ext to disable.
	     read_concatenated_archives
		     Ignore zeroed blocks in the archive, which occurs when mul-
		     tiple tar archives have been concatenated together.   With-
		     out  this	option,  only the contents of the first concate-
		     nated 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  cor-
		     rectly.
	     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 spe-
		     cial  files  beginning  with  a period and underscore.  De-
		     faults to enabled on Mac OS, disabled on  other  platforms.
		     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 ports 15.quarterly	January 31, 2020	 ARCHIVE_READ_OPTIONS(3)

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