RCMDSH(3)                 OpenBSD Programmer's Manual                RCMDSH(3)

NAME
     rcmdsh - return a stream to a remote command without superuser



SYNOPSIS
     #include <unistd.h>

     int
     rcmdsh(char **ahost, int inport, const char *locuser,
             const char *remuser, const char *cmd, char *rshprog);

DESCRIPTION
     The rcmdsh() function is used by normal users to execute a command on a
     remote machine using an authentication scheme based on reserved port num-
     bers using rshd(8) or the value of rshprog (if non-null).

     The rcmdsh() function looks up the host *ahost using gethostbyname(3),
     returning -1 if the host does not exist.  Otherwise *ahost is set to the
     standard name of the host and a connection is established to a server re-
     siding at the well-known Internet port shell/tcp (or whatever port is
     used by rshprog ).  The parameter inport is ignored; it is only included
     to provide an interface similar to rcmd(3).

     If the connection succeeds, a socket in the UNIX domain of type
     SOCK_STREAM is returned to the caller, and given to the remote command as
     stdin and stdout, and stderr.

DIAGNOSTICS
     The rcmdsh() function returns a valid socket descriptor on success.  It
     returns -1 on error and prints a diagnostic message on the standard er-
     ror.

SEE ALSO
     rsh(1),  socketpair(2),  rcmd(3),  rshd(8)

BUGS
     If rsh(1) gets an error a file descriptor is still returned instead of
     -1.

HISTORY
     The rcmdsh() function first appeared in OpenBSD 2.0.

OpenBSD 2.6                    September 1, 1996                             1