ARCHIVE_WRITE_BLOCKSI... BSD Library Functions Manual ARCHIVE_WRITE_BLOCKSI...NAME
archive_write_set_bytes_in_last_block — functions for creating archives
Streaming Archive Library (libarchive, -larchive)
archive_write_get_bytes_per_block(struct archive *);
archive_write_set_bytes_per_block(struct archive *, int bytes_per_block);
archive_write_get_bytes_in_last_block(struct archive *);
archive_write_set_bytes_in_last_block(struct archive *, int);
Sets the block size used for writing the archive data. Every
call to the write callback function, except possibly the last
one, will use this value for the length. The default is to use a
block size of 10240 bytes. Note that a block size of zero will
suppress internal blocking and cause writes to be sent directly
to the write callback as they occur.
Retrieve the block size to be used for writing. A value of -1
here indicates that the library should use default values. A
value of zero indicates that internal blocking is suppressed.
Sets the block size used for writing the last block. If this
value is zero, the last block will be padded to the same size as
the other blocks. Otherwise, the final block will be padded to a
multiple of this size. In particular, setting it to 1 will cause
the final block to not be padded. For compressed output, any
padding generated by this option is applied only after the com‐
pression. The uncompressed data is always unpadded. The default
is to pad the last block to the full block size (note that
archive_write_open_filename() will set this based on the file
type). Unlike the other “set” functions, this function can be
called after the archive is opened.
Retrieve the currently-set value for last block size. A value of
-1 here indicates that the library should use default values.
RETURN VALUESarchive_write_set_bytes_per_block() and
archive_write_set_bytes_in_last_block() return ARCHIVE_OK on success, or
archive_write_get_bytes_in_last_block() return currently configured block
size (-1 indicates the default block size), or ARCHIVE_FATAL.
Detailed error codes and textual descriptions are available from the
archive_errno() and archive_error_string() functions.
SEE ALSOtar(1), libarchive(3), archive_write_set_options(3), cpio(5), mtree(5),
tar(5)BSD February 2, 2012 BSD