c hooks.  */
assuan_malloc_hooks_t assuan_get_malloc_hooks (void);


/* Set the default log callback handler.  */
void assuan_set_log_cb (assuan_log_cb_t log_cb, void *log_cb_data);

/* Get the default log callback handler.  */
void assuan_get_log_cb (assuan_log_cb_t *log_cb, void **log_cb_data);


/* Create a new Assuan context.  The initial parameters are all needed
 * in the creation of the context.  */
gpg_error_t assuan_new_ext (assuan_context_t *ctx, gpg_err_source_t errsource,
			    assuan_malloc_hooks_t malloc_hooks,
			    assuan_log_cb_t log_cb, void *log_cb_data);

/* Create a new context with default arguments.  */
gpg_error_t assuan_new (assuan_context_t *ctx);

/* Release all resources associated with the given context.  */
void assuan_release (assuan_context_t ctx);

/* Release the memory at PTR using the allocation handler of the
 * context CTX.  This is a convenience function.  */
void assuan_free (assuan_context_t ctx, void *ptr);

/* Codes used with the gcry_control function. */
enum assuan_ctl_cmds
  {
    ASSUAN_CONTROL_NOP = 0,
    ASSUAN_CONTROL_REINIT_SYSCALL_CLAMP = 1
  };

/* Perform control operations defined by CMD.  */
gpg_error_t assuan_control (enum assuan_ctl_cmds cmd, void *arg);