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ARCHIVE_READ_OPTIONS(3)  BSD 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 noth-
             ing 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.  Oth-
             erwise, 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 iso9660
             joliet  Support Joliet extensions.  Defaults to enabled, use
                     !joliet to disable.
             rockridge
                     Support RockRidge extensions.  Defaults to enabled, use
                     !rockridge to disable.
     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 filenames.
             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 con-
                     catenated archive would be read.


ERRORS

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


SEE ALSO

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

BSD                            February 2, 2012                            BSD

libarchive 3.2.1 - Generated Sat Jun 25 15:20:49 CDT 2016
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