- support RCMD_CMD, ala rcmd(3).

- put paths for rsh and rmt into "pathnames.h"
- document this.

lib/librmt/pathnames.h

@@ -0,0 +1,32 @@
+/*	$NetBSD: pathnames.h,v 1.1 1998/03/08 23:36:46 mrg Exp $	*/
+
+/*
+ * Copyright (c) 1998 Matthew R. Green
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#define _PATH_RSH "/usr/bin/rsh"
+#define _PATH_RMT "/etc/rmt"

lib/librmt/rmtlib.c

@@ -1,4 +1,4 @@
-/*	$NetBSD: rmtlib.c,v 1.9 1997/10/21 19:58:21 thorpej Exp $	*/
+/*	$NetBSD: rmtlib.c,v 1.10 1998/03/08 23:36:46 mrg Exp $	*/
 
 /*
  *	rmt --- remote tape emulator subroutines
@@ -60,6 +60,8 @@
 #include <varargs.h>
 #endif
 
+#include "pathnames.h"
+
 static	int	_rmt_close __P((int));
 static	int	_rmt_ioctl __P((int, unsigned long, char *));
 static	off_t	_rmt_lseek __P((int, off_t, int));
@@ -354,6 +356,8 @@ _rmt_open(path, oflag, mode)
 
 	if (rc == 0)
 	{
+		char	*rshpath, *rsh;
+
 		close(0);
 		dup(Ptc[i][0]);
 		close(Ptc[i][0]); close(Ptc[i][1]);
@@ -362,15 +366,23 @@ _rmt_open(path, oflag, mode)
 		close(Ctp[i][0]); close(Ctp[i][1]);
 		(void) setuid (getuid ());
 		(void) setgid (getgid ());
+		
+		if ((rshpath = getenv("RCMD_CMD")) == NULL)
+			rshpath = _PATH_RSH;
+		if ((rsh = strrchr(rshpath, '/')) == NULL)
+			rsh = rshpath;
+		else
+			rsh++;
+		
 		if (*login)
 		{
-			execl("/usr/bin/rsh", "rsh", system, "-l", login,
-				"/etc/rmt", (char *) 0);
+			execl(rshpath, rsh, system, "-l", login,
+				_PATH_RMT, (char *) 0);
 		}
 		else
 		{
-			execl("/usr/bin/rsh", "rsh", system,
-				"/etc/rmt", (char *) 0);
+			execl(rshpath, rsh, system,
+				_PATH_RMT, (char *) 0);
 		}
 
 /*

lib/librmt/rmtops.3

@@ -1,4 +1,4 @@
-.\"	$NetBSD: rmtops.3,v 1.2 1996/08/09 03:39:02 jtc Exp $
+.\"	$NetBSD: rmtops.3,v 1.3 1998/03/08 23:36:46 mrg Exp $
 .\"
 .TH RMTOPS 3
 .SH NAME
@@ -191,6 +191,14 @@ file in the user's home directory, or that the application designer
 be willing to have
 .I rexec
 prompt the user for a login name and password on the remote host.
+.SH ENVIRONMENT
+The
+.I RCMD_CMD
+environment variable can be set to the name or pathname of a program
+to use, instead of
+.P /usr/bin/rsh ,
+and must have the same calling conventions as
+.IR rsh(1).
 .SH AUTHORS
 Jeff Lee (gatech!jeff) wrote the original routines for accessing
 tape drives via