NAME

       remctl_command, remctl_commandv - Send a command to a remctl server

SYNOPSIS

       #include <remctl.h>

       int remctl_command(struct remctl *r, const char **command);

       #include <sys/uio.h>

       int remctl_commandv(struct remctl *r, const struct iovec *iov,
                           size_t count);

DESCRIPTION

       remctl_command() and remctl_commandv() send a command to a remote remctl server.  The
       remctl client object r, created with remctl_new(), should have previously been passed to
       remctl_open() to open a connection to the server.

       remctl_command() takes the command as a NULL-terminated array of NUL-terminated strings
       (the same layout as an argv array).  This function is most convenient when passing simple
       text commands.

       remctl_commandv() takes the command as an array of iovec structs of length count.  This
       function is most convenient when passing arbitrary data to the command, since the iovec
       struct takes a pointer and a length for each chunk of data.  See writev(2) for the layout
       of the iovec struct.

       To control the network timeout for sending the command, see the remctl_set_timeout(3)
       function.

       After calling one of these functions, call remctl_output() to get the results of the
       command.

RETURN VALUE

       remctl_command() and remctl_commandv() return true on success and false on failure.  On
       failure, the caller should call remctl_error() to retrieve the error message.

COMPATIBILITY

       These interfaces have been provided by the remctl client library since its initial release
       in version 2.0.

AUTHOR

       Russ Allbery <eagle@eyrie.org>

COPYRIGHT AND LICENSE

       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.

SEE ALSO

       remctl_new(3), remctl_open(3), remctl_output(3), remctl_error(3)

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