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diff --git a/contrib/gsc/ucfggsc.c b/contrib/gsc/ucfggsc.c
new file mode 100644
index 0000000..4bf7444
--- /dev/null
+++ b/contrib/gsc/ucfggsc.c
@@ -0,0 +1,181 @@
+/*
+ * %W% %G%
+ * $Id: ucfggsc.c,v 1.1 2001/04/15 11:12:37 ant Exp $
+ * Copyright (c) 1997 by Matthew Jacob
+ *
+ *	This software is free software; you can redistribute it and/or
+ *	modify it under the terms of the GNU Library General Public
+ *	License as published by the Free Software Foundation; version 2.
+ *
+ *	This software is distributed in the hope that it will be useful,
+ *	but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ *	Library General Public License for more details.
+ *
+ *	You should have received a copy of the GNU Library General Public
+ *	License along with this software; if not, write to the Free
+ *	Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ *	The author may be reached via electronic communications at
+ *
+ *		mjacob@feral.com
+ *
+ *	or, via United States Postal Address
+ *
+ *		Matthew Jacob
+ *		1831 Castro Street
+ *		San Francisco, CA, 94131
+ */
+
+#include <stdio.h>
+#include <sys/types.h>
+#include <errno.h>
+#include <sys/cfgdb.h>
+#include <sys/cfgodm.h>
+#include <cf.h>
+#include <sys/sysconfig.h>
+#include <sys/sysmacros.h>
+#include <sys/device.h>
+
+#include "gscdds.h"
+
+#define	vprintf	if (verbose) printf
+
+extern mid_t loadext(char *, int, int);
+
+static void
+err_exit(char exitcode)
+{
+    odm_close_class(CuDv_CLASS);
+    odm_close_class(PdDv_CLASS);
+    odm_terminate();
+    exit(exitcode);
+}
+
+int
+main(int argc, char **argv)
+{
+    char *logical_name, *ptr;
+    char sstring[256];
+    struct CuDv cudvobj;
+    struct PdDv pddvobj;
+    int rc, how_many, errflg, c, majorno, minorno, unit, verbose;
+    struct cfg_dd cfg;
+    struct cfg_load load;
+    int *minor_list;
+    extern int optind;
+    extern char *optarg;
+
+    verbose = errflg = 0;
+    logical_name = NULL;
+    while ((c = getopt(argc,argv,"vl:")) != EOF) {
+	switch (c) {
+	case 'v':
+	    verbose++;
+	    break;
+	case 'l':
+	    if (logical_name != NULL)
+		errflg++;
+	    logical_name = optarg;
+	    break;
+	default:
+	    errflg++;
+	}
+    }
+    if (errflg)
+	exit(E_ARGS);
+
+    if (logical_name == NULL)
+	exit(E_LNAME);
+
+    if (odm_initialize() == -1)
+	exit(E_ODMINIT);
+
+    /* Get Customized Device Object for this device */
+    sprintf(sstring,"name = '%s'",logical_name);
+    rc = (int) odm_get_first(CuDv_CLASS, sstring, &cudvobj);
+    if (rc ==  0) {
+	err_exit(E_NOCuDv);
+    } else if (rc == -1) {
+	err_exit(E_ODMGET);
+    }
+
+    if (cudvobj.status == DEFINED)
+	err_exit(E_OK);  /* already unconf'd */
+
+    /* get device's predefined object */
+    sprintf(sstring,"uniquetype = '%s'", cudvobj.PdDvLn_Lvalue);
+    rc = (int) odm_get_first(PdDv_CLASS, sstring, &pddvobj);
+    if (rc ==  0)
+	err_exit(E_NOPdDv);
+    else if (rc == -1)
+	err_exit(E_ODMGET);
+
+    /*
+     * Call sysconfig() to "terminate" the device.
+     * If fails with EBUSY, then device instance is "open",
+     * and device cannot be "unconfigured".  Any other errno
+     * returned will be ignored since we MUST unconfigure the
+     * device even if it reports some other error.
+     */
+
+    /* get major number of device */
+    majorno = genmajor(pddvobj.DvDr);
+    if (majorno == -1) {
+	return(E_MAJORNO);
+    }
+    /* get minor number */
+    minor_list = getminor(majorno, &how_many, pddvobj.DvDr);
+    if (minor_list == NULL || how_many == 0)
+	err_exit (E_MINORNO);
+    vprintf("how_many=%d\n", how_many);
+    ptr = logical_name;
+    ptr += strlen(pddvobj.prefix);
+    unit = atoi(ptr);
+    if (unit >= how_many) {
+	err_exit (E_MINORNO);
+    }
+    minorno = minor_list[unit];
+    vprintf("unit %d minorno %d\n", unit, minorno);
+
+    /* create devno for this device */
+    cfg.devno = makedev(majorno, minorno);
+    cfg.kmid = 0;
+    cfg.ddsptr = (caddr_t) NULL;
+    cfg.ddslen = (int) 0;
+    cfg.cmd = CFG_TERM;
+    if (sysconfig(SYS_CFGDD, &cfg, sizeof(struct cfg_dd)) == -1) {
+	if (errno == EBUSY)
+	    err_exit(E_BUSY);
+    }
+    cfg.kmid = loadext(pddvobj.DvDr, FALSE, FALSE);
+    if (cfg.kmid == NULL)
+	err_exit(E_UNLOADEXT);
+
+    /* Change the status field of device to "DEFINED" */
+    cudvobj.status = DEFINED;
+    if (odm_change_obj(CuDv_CLASS, &cudvobj) == -1) 
+	err_exit(E_ODMUPDATE);
+
+    /*
+     * Terminate ODM
+     */
+    odm_terminate();
+    return (E_OK);
+}
+/*
+ * Overrides for Emacs so that we follow Linus's tabbing style.
+ * Emacs will notice this stuff at the end of the file and automatically
+ * adjust the settings for this buffer only.  This must remain at the end
+ * of the file.
+ * ---------------------------------------------------------------------------
+ * Local variables:
+ * c-indent-level: 4
+ * c-brace-imaginary-offset: 0
+ * c-brace-offset: -4
+ * c-argdecl-indent: 4
+ * c-label-offset: -4
+ * c-continued-statement-offset: 4
+ * c-continued-brace-offset: 0
+ * End:
+ */