添加patch文件

cherry-pick from: ef19ef88bb17c30e9cfb084c2ca4dbecc79b7e7d

backport-fstat-dir-itself.patch

@@ -0,0 +1,33 @@
+From 2f26f8aae1ece618ff7ade997609509f0b60d400 Mon Sep 17 00:00:00 2001
+From: zhangyao <zhangyao108@huawei.com>
+Date: Sat, 30 Jul 2022 10:38:37 +0800
+Subject: [PATCH] fstat dir itself
+
+---
+ lib/path.c | 10 ++++++----
+ 1 file changed, 6 insertions(+), 4 deletions(-)
+
+diff --git a/lib/path.c b/lib/path.c
+index 21f9bd1..f0b010e 100644
+--- a/lib/path.c
++++ b/lib/path.c
+@@ -350,10 +350,12 @@ int ul_path_stat(struct path_cxt *pc, struct stat *sb, const char *path)
+ 		int dir = ul_path_get_dirfd(pc);
+ 		if (dir < 0)
+ 			return dir;
+-		if (*path == '/')
+-			path++;
+-
+-		rc = fstatat(dir, path, sb, 0);
++		if (path) {
++			if  (*path == '/')
++				path++;
++			rc = fstatat(dir, path, sb, 0);
++		} else
++			rc = fstat(dir, sb);	/* dir itself */
+ 
+ 		if (rc && errno == ENOENT
+ 		    && pc->redirect_on_enoent
+-- 
+2.33.0
+