1 files changed, 84 insertions, 0 deletions
diff --git a/src/pmdk/src/core/fs_posix.c b/src/pmdk/src/core/fs_posix.c
new file mode 100644
index 000000000..ec27f4399
--- /dev/null
+++ b/src/pmdk/src/core/fs_posix.c
@@ -0,0 +1,84 @@
+// SPDX-License-Identifier: BSD-3-Clause
+/* Copyright 2017-2020, Intel Corporation */
+
+/*
+ * fs_posix.c -- file system traversal Posix implementation
+ */
+
+#include <fts.h>
+#include "util.h"
+#include "out.h"
+#include "vec.h"
+#include "fs.h"
+
+struct fs {
+	FTS *ft;
+	struct fs_entry entry;
+};
+
+/*
+ * fs_new -- creates fs traversal instance
+ */
+struct fs *
+fs_new(const char *path)
+{
+	struct fs *f = Zalloc(sizeof(*f));
+	if (f == NULL)
+		goto error_fs_alloc;
+
+	const char *paths[2] = {path, NULL};
+	f->ft = fts_open((char * const *)paths, FTS_COMFOLLOW | FTS_XDEV, NULL);
+	if (f->ft == NULL)
+		goto error_fts_open;
+
+	return f;
+
+error_fts_open:
+	Free(f);
+error_fs_alloc:
+	return NULL;
+}
+
+/*
+ * fs_read -- reads an entry from the fs path
+ */
+struct fs_entry *
+fs_read(struct fs *f)
+{
+	FTSENT *entry = fts_read(f->ft);
+	if (entry == NULL)
+		return NULL;
+
+	switch (entry->fts_info) {
+	case FTS_D:
+		f->entry.type = FS_ENTRY_DIRECTORY;
+		break;
+	case FTS_F:
+		f->entry.type = FS_ENTRY_FILE;
+		break;
+	case FTS_SL:
+		f->entry.type = FS_ENTRY_SYMLINK;
+		break;
+	default:
+		f->entry.type = FS_ENTRY_OTHER;
+		break;
+	}
+
+	f->entry.name = entry->fts_name;
+	f->entry.namelen = entry->fts_namelen;
+	f->entry.path = entry->fts_path;
+	f->entry.pathlen = entry->fts_pathlen;
+	f->entry.level = entry->fts_level;
+
+	return &f->entry;
+}
+
+/*
+ * fs_delete -- deletes a fs traversal instance
+ */
+void
+fs_delete(struct fs *f)
+{
+	fts_close(f->ft);
+	Free(f);
+}