remctl_error - Retrieve the error from a failed remctl operation

       Russ Allbery <eagle@eyrie.org>

       This interface has been provided by the remctl client library since its initial release in version 2.0.

       Copyright 2007, 2009, 2014 The Board of Trustees of the Leland Stanford Junior University

       Copying and distribution of this file, with or without modification, are permitted in any medium without
       royalty provided the copyright notice and this notice are preserved.  This file is offered as-is, without
       any warranty.

       SPDX-License-Identifier: FSFAP

remctl_error() returns the error from a previously failed remctl operation.  Its only argument is a
       remctl struct as returned by remctl_new().  If the previous remctl operation was successful, returns the
       constant string "No error".

       The caller may not modify the returned string.  The string may even be stored in read-only memory and
       attempting to modify it may cause a memory fault.  The returned pointer will be invalidated by the next
       call to any remctl API function with the same client object, other than remctl_error().

       remctl_error - Retrieve the error from a failed remctl operation

remctl_error() returns either the previous error or the constant string "No error".  It will never return
       NULL.

remctl_new(3), remctl_open(3), remctl_command(3), remctl_commandv(3), remctl_output(3)

       The current version of the remctl library and complete details of the remctl protocol are available from
       its web page at <https://www.eyrie.org/~eagle/software/remctl/>.

3.18                                               2022-05-09                                    REMCTL_ERROR(3)

       #include <remctl.h>

       const char *remctl_error(struct remctl *r);