NAME    [Toc]    [Back]

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

SYNOPSIS    [Toc]    [Back]

     #include <unistd.h>

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

DESCRIPTION    [Toc]    [Back]

     The rcmdsh() function is used by normal users to execute a command on a
     remote machine using an authentication scheme based on reserved port numbers
 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
     residing at the well-known Internet port ``shell/tcp'' (or whatever port
     is used by rshprog).  The inport argument 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, stdout, and stderr.

RETURN VALUES    [Toc]    [Back]

     The rcmdsh() function returns a valid socket descriptor on success.  Otherwise,
 -1 is returned and a diagnostic message is printed on the standard
 error.

SEE ALSO    [Toc]    [Back]

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

BUGS    [Toc]    [Back]

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

HISTORY    [Toc]    [Back]

     The rcmdsh() function first appeared in OpenBSD 2.0, and made its way
     into FreeBSD 4.6.


FreeBSD 5.2.1		       September 1, 1996		 FreeBSD 5.2.1