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 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 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 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
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 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
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), archive_read(3), archive_write_set_options(3), libarchive(3)
BSD January 31, 2020 BSD
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