move iterate_on_dir() from e2fsprogs to libbb

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 28 insertions, 0 deletions

diff --git a/libbb/iterate_on_dir.c b/libbb/iterate_on_dir.c
new file mode 100644
index 000000000..deef72ebf
--- /dev/null
+++ b/libbb/iterate_on_dir.c
@@ -0,0 +1,28 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * See README for additional information
+ *
+ * Licensed under GPLv2, see file LICENSE in this source tree.
+ */
+//kbuild:lib-y += iterate_on_dir.o
+
+#include "libbb.h"
+
+/* Iterate a function on each entry of a directory */
+int FAST_FUNC iterate_on_dir(const char *dir_name,
+                int FAST_FUNC (*func)(const char *, struct dirent *, void *),
+                void *private)
+{
+        DIR *dir;
+        struct dirent *de;
+
+        dir = opendir(dir_name);
+        if (dir == NULL) {
+                return -1;
+        }
+        while ((de = readdir(dir)) != NULL) {
+                func(dir_name, de, private);
+        }
+        closedir(dir);
+        return 0;
+}