libmount: add list routines and generic iterator

Signed-off-by: Karel Zak <kzak@redhat.com>

1 files changed, 54 insertions, 0 deletions

diff --git a/shlibs/mount/src/iter.c b/shlibs/mount/src/iter.c
new file mode 100644
index 000000000..d64f2d40d
--- /dev/null
+++ b/shlibs/mount/src/iter.c
@@ -0,0 +1,54 @@
+/*
+ * Copyright (C) 2009 Karel Zak <kzak@redhat.com>
+ *
+ * This file may be redistributed under the terms of the
+ * GNU Lesser General Public License.
+ */
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+
+#include "mountP.h"
+
+/**
+ * mnt_new_iter:
+ * @direction: MNT_INTER_{FOR,BACK}WARD direction
+ *
+ * Returns newly allocated generic libmount iterator.
+ */
+mnt_iter *mnt_new_iter(int direction)
+{
+	mnt_iter *itr = calloc(1, sizeof(struct _mnt_iter));
+	if (!itr)
+		return NULL;
+	itr->direction = direction;
+	return itr;
+}
+
+/**
+ * mnt_free_iter:
+ * @itr: iterator pointer
+ *
+ * Deallocates iterator.
+ */
+void mnt_free_iter(mnt_iter *itr)
+{
+	free(itr);
+}
+
+/**
+ * mnt_reset_iter:
+ * @itr: iterator pointer
+ * @direction: MNT_INTER_{FOR,BACK}WARD iterator direction
+ *
+ * Resets iterator.
+ */
+void mnt_reset_iter(mnt_iter *itr, int direction)
+{
+	assert(itr);
+
+	if (itr) {
+		memset(itr, 0, sizeof(struct _mnt_iter));
+		itr->direction = direction;
+	}
+}