NAME

     archive_write_data, archive_write_data_block — functions for creating archives

LIBRARY

     Streaming Archive Library (libarchive, -larchive)

SYNOPSIS

     #include <archive.h>

     la_ssize_t
     archive_write_data(struct archive *, const void *, size_t);

     la_ssize_t
     archive_write_data_block(struct archive *, const void *, size_t size, int64_t offset);

DESCRIPTION

     archive_write_data()
             Write data corresponding to the header just written.

     archive_write_data_block()
             Write data corresponding to the header just written.  This is like
             archive_write_data() except that it performs a seek on the file being written to the
             specified offset before writing the data.  This is useful when restoring sparse
             files from archive formats that support sparse files.  Returns number of bytes
             written or -1 on error.  (Note: This is currently not supported for archive_write
             handles, only for archive_write_disk handles.

RETURN VALUES

     This function returns the number of bytes actually written, or a negative error code on
     error.

ERRORS

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

BUGS

     In libarchive 3.x, this function sometimes returns zero on success instead of returning the
     number of bytes written.  Specifically, this occurs when writing to an archive_write_disk
     handle.  Clients should treat any value less than zero as an error and consider any non-
     negative value as success.

SEE ALSO

     tar(1), archive_write_finish_entry(3), archive_write_set_options(3), libarchive(3), cpio(5),
     mtree(5), tar(5)