1 files changed, 100 insertions, 0 deletions
diff --git a/lib/dns/gen-unix.h b/lib/dns/gen-unix.h
new file mode 100644
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+++ b/lib/dns/gen-unix.h
@@ -0,0 +1,100 @@
+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * SPDX-License-Identifier: MPL-2.0
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, you can obtain one at https://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+/*! \file
+ * \brief
+ * This file is responsible for defining two operations that are not
+ * directly portable between Unix-like systems and Windows NT, option
+ * parsing and directory scanning.  It is here because it was decided
+ * that the "gen" build utility was not to depend on libisc.a, so
+ * the functions declared in isc/commandline.h and isc/dir.h could not
+ * be used.
+ *
+ * The commandline stuff is really just a wrapper around getopt().
+ * The dir stuff was shrunk to fit the needs of gen.c.
+ */
+
+#ifndef DNS_GEN_UNIX_H
+#define DNS_GEN_UNIX_H 1
+
+#include <dirent.h>
+#include <errno.h>
+#include <stdbool.h>
+#include <stdlib.h>
+#include <sys/types.h> /* Required on some systems for dirent.h. */
+#include <unistd.h>    /* XXXDCL Required for ?. */
+
+#include <isc/lang.h>
+
+#ifdef NEED_OPTARG
+extern char *optarg;
+#endif /* ifdef NEED_OPTARG */
+
+#define isc_commandline_parse	 getopt
+#define isc_commandline_argument optarg
+
+typedef struct {
+	DIR *handle;
+	char *filename;
+} isc_dir_t;
+
+ISC_LANG_BEGINDECLS
+
+static bool
+start_directory(const char *path, isc_dir_t *dir) {
+	dir->handle = opendir(path);
+
+	if (dir->handle != NULL) {
+		return (true);
+	} else {
+		return (false);
+	}
+}
+
+static bool
+next_file(isc_dir_t *dir) {
+	struct dirent *dirent;
+
+	dir->filename = NULL;
+
+	if (dir->handle != NULL) {
+		errno = 0;
+		dirent = readdir(dir->handle);
+		if (dirent != NULL) {
+			dir->filename = dirent->d_name;
+		} else {
+			if (errno != 0) {
+				exit(1);
+			}
+		}
+	}
+
+	if (dir->filename != NULL) {
+		return (true);
+	} else {
+		return (false);
+	}
+}
+
+static void
+end_directory(isc_dir_t *dir) {
+	if (dir->handle != NULL) {
+		(void)closedir(dir->handle);
+	}
+
+	dir->handle = NULL;
+}
+
+ISC_LANG_ENDDECLS
+
+#endif /* DNS_GEN_UNIX_H */