Execute an OSD class method on an object
See rados_exec() for general description.
If the output buffer is too small, prval will
be set to -ERANGE and used_len will be 0.
@param read_op operation to add this action to
@param cls the name of the class
@param method the name of the method
@param in_buf where to find input
@param in_len length of in_buf in bytes
@param out_buf user-provided buffer to read into
@param out_len length of out_buf in bytes
@param used_len where to store the number of bytes read into out_buf
@param prval where to store the return value from the method
Execute an OSD class method on an object See rados_exec() for general description.
If the output buffer is too small, prval will be set to -ERANGE and used_len will be 0.
@param read_op operation to add this action to @param cls the name of the class @param method the name of the method @param in_buf where to find input @param in_len length of in_buf in bytes @param out_buf user-provided buffer to read into @param out_len length of out_buf in bytes @param used_len where to store the number of bytes read into out_buf @param prval where to store the return value from the method