1 files changed, 131 insertions, 0 deletions
diff --git a/support/junction/locations.c b/support/junction/locations.c
new file mode 100644
index 0000000..c577981
--- /dev/null
+++ b/support/junction/locations.c
@@ -0,0 +1,131 @@
+/**
+ * @file support/junction/locations.c
+ * @brief Utility functions to manage NFS locations data
+ */
+
+/*
+ * Copyright 2011, 2018 Oracle.  All rights reserved.
+ *
+ * This file is part of nfs-utils.
+ *
+ * nfs-utils is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2.0 as
+ * published by the Free Software Foundation.
+ *
+ * nfs-utils 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 General Public License version 2.0 for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * version 2.0 along with nfs-utils.  If not, see:
+ *
+ *	http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt
+ */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+#include <string.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <errno.h>
+
+#include "junction.h"
+
+/**
+ * Free an array of NUL-terminated C strings
+ *
+ * @param array array of pointers to C strings
+ */
+void
+nfs_free_string_array(char **array)
+{
+	unsigned int i;
+
+	if (array == NULL)
+		return;
+	for (i = 0; array[i] != NULL; i++)
+		free(array[i]);
+	free(array);
+}
+
+/**
+ * Duplicate an array of NUL-terminated C strings
+ *
+ * @param array array of pointers to C strings
+ * @return freshly allocated array of points to C strings, or NULL
+ *
+ * Caller must free the returned array with nfs_free_string_array()
+ */
+__attribute_malloc__ char **
+nfs_dup_string_array(char **array)
+{
+	unsigned int size, i;
+	char **result;
+
+	if (array == NULL)
+		return NULL;
+
+	for (size = 0; array[size] != NULL; size++);
+
+	result = calloc(size + 1, sizeof(char *));
+	if (result == NULL)
+		return NULL;
+	for (i = 0; i < size; i++) {
+		result[i] = strdup(array[i]);
+		if (result[i] == NULL) {
+			nfs_free_string_array(result);
+			return NULL;
+		}
+	}
+	return result;
+}
+
+/**
+ * Free a single NFS location
+ *
+ * @param location pointer to nfs_fsloc data
+ */
+void
+nfs_free_location(struct nfs_fsloc *location)
+{
+	nfs_free_string_array(location->nfl_rootpath);
+	free(location->nfl_hostname);
+	free(location);
+}
+
+/**
+ * Free a list of NFS locations
+ *
+ * @param locations pointer to list of one or more locations
+ */
+void
+nfs_free_locations(struct nfs_fsloc *locations)
+{
+	struct nfs_fsloc *fsloc;
+
+	while (locations != NULL) {
+		fsloc = locations;
+		locations = fsloc->nfl_next;
+		nfs_free_location(fsloc);
+	}
+}
+
+/**
+ * Allocate a fresh nfs_fsloc structure
+ *
+ * @return pointer to new empty nfs_fsloc data structure
+ *
+ * Caller must free returned locations with nfs_free_location().
+ */
+struct nfs_fsloc *
+nfs_new_location(void)
+{
+	return calloc(1, sizeof(struct nfs_fsloc));
+}