1 files changed, 104 insertions, 0 deletions
diff --git a/usr.sbin/crunchgen/crunched_main.c b/usr.sbin/crunchgen/crunched_main.c
new file mode 100644
index 00000000000..c0a7827f66f
--- /dev/null
+++ b/usr.sbin/crunchgen/crunched_main.c
@@ -0,0 +1,104 @@
+/* $OpenBSD: crunched_main.c,v 1.1 2008/08/22 15:18:55 deraadt Exp $	 */
+
+/*
+ * Copyright (c) 1994 University of Maryland
+ * All Rights Reserved.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation, and that the name of U.M. not be used in advertising or
+ * publicity pertaining to distribution of the software without specific,
+ * written prior permission.  U.M. makes no representations about the
+ * suitability of this software for any purpose.  It is provided "as is"
+ * without express or implied warranty.
+ *
+ * U.M. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL U.M.
+ * BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * Author: James da Silva, Systems Design and Analysis Group
+ *			   Computer Science Department
+ *			   University of Maryland at College Park
+ */
+/*
+ * crunched_main.c - main program for crunched binaries, it branches to a
+ * 	particular subprogram based on the value of argv[0].  Also included
+ *	is a little program invoked when the crunched binary is called via
+ *	its EXECNAME.  This one prints out the list of compiled-in binaries,
+ *	or calls one of them based on argv[1].   This allows the testing of
+ *	the crunched binary without creating all the links.
+ */
+#include <stdio.h>
+#include <string.h>
+
+struct stub {
+	char	*name;
+	int	(*f)();
+};
+
+extern struct stub entry_points[];
+
+int 
+main(int argc, char *argv[], char **envp)
+{
+	char		*slash, *basename;
+	struct stub	*ep;
+
+	if (argv[0] == NULL || *argv[0] == '\0')
+		crunched_usage();
+
+	slash = strrchr(argv[0], '/');
+	basename = slash ? slash + 1 : argv[0];
+
+	for (ep = entry_points; ep->name != NULL; ep++)
+		if (!strcmp(basename, ep->name))
+			break;
+
+	if (ep->name)
+		return ep->f(argc, argv, envp);
+	else {
+		fprintf(stderr, "%s: %s not compiled in\n", EXECNAME, basename);
+		crunched_usage();
+	}
+}
+
+int 
+crunched_main(int argc, char **argv, char **envp)
+{
+	struct stub	*ep;
+	int		columns, len;
+
+	if (argc <= 1)
+		crunched_usage();
+
+	return main(--argc, ++argv, envp);
+}
+
+int 
+crunched_usage()
+{
+	int		columns, len;
+	struct stub	*ep;
+
+	fprintf(stderr,
+	    "Usage: %s <prog> <args> ..., where <prog> is one of:\n",
+	    EXECNAME);
+	columns = 0;
+	for (ep = entry_points; ep->name != NULL; ep++) {
+		len = strlen(ep->name) + 1;
+		if (columns + len < 80)
+			columns += len;
+		else {
+			fprintf(stderr, "\n");
+			columns = len;
+		}
+		fprintf(stderr, " %s", ep->name);
+	}
+	fprintf(stderr, "\n");
+	exit(1);
+}