1 files changed, 46 insertions, 0 deletions
diff --git a/fs/cifs/dfs.h b/fs/cifs/dfs.h
new file mode 100644
index 000000000000..344bea6d8bab
--- /dev/null
+++ b/fs/cifs/dfs.h
@@ -0,0 +1,46 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (c) 2022 Paulo Alcantara <palcantara@suse.de>
+ */
+
+#ifndef _CIFS_DFS_H
+#define _CIFS_DFS_H
+
+#include "cifsglob.h"
+#include "fs_context.h"
+#include "cifs_unicode.h"
+
+int dfs_parse_target_referral(const char *full_path, const struct dfs_info3_param *ref,
+			      struct smb3_fs_context *ctx);
+int dfs_mount_share(struct cifs_mount_ctx *mnt_ctx, bool *isdfs);
+
+static inline char *dfs_get_path(struct cifs_sb_info *cifs_sb, const char *path)
+{
+	return dfs_cache_canonical_path(path, cifs_sb->local_nls, cifs_remap(cifs_sb));
+}
+
+static inline int dfs_get_referral(struct cifs_mount_ctx *mnt_ctx, const char *path,
+				   struct dfs_info3_param *ref, struct dfs_cache_tgt_list *tl)
+{
+	struct cifs_sb_info *cifs_sb = mnt_ctx->cifs_sb;
+
+	return dfs_cache_find(mnt_ctx->xid, mnt_ctx->root_ses, cifs_sb->local_nls,
+			      cifs_remap(cifs_sb), path, ref, tl);
+}
+
+static inline char *dfs_get_automount_devname(struct dentry *dentry, void *page)
+{
+	struct cifs_sb_info *cifs_sb = CIFS_SB(dentry->d_sb);
+	struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb);
+	struct TCP_Server_Info *server = tcon->ses->server;
+
+	if (unlikely(!server->origin_fullpath))
+		return ERR_PTR(-EREMOTE);
+
+	return __build_path_from_dentry_optional_prefix(dentry, page,
+							server->origin_fullpath,
+							strlen(server->origin_fullpath),
+							true);
+}
+
+#endif /* _CIFS_DFS_H */