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)

Debian                                          February 28, 2017                          ARCHIVE_WRITE_DATA(3)