new file mode 100644
@@ -0,0 +1,88 @@
+From 7e789895919d57d573ebb8faa147d1286104cd01 Mon Sep 17 00:00:00 2001
+From: Rui Wang <rui.wang@windriver.com>
+Date: Mon, 24 Apr 2023 02:57:57 -0700
+Subject: [PATCH] attr: fix utime for symlink
+
+unfs3 has an old defect that it can not change the timestamps of a
+symlink file because it only uses utime(), which will follow the
+symlink. This will not cause an error if the symlink points to an
+existent file. But under some special situation, such as installing
+a rpm package, rpm tool will create the symlink first and try to
+modify the timestamps of it, when the target file is non-existent.
+This will cause an ESTALE error. Making rpm tool ignore this error
+is a solution, but not the best one. An acceptable approach is
+Making unfs3 support lutimes(), which can modify the symlink file
+itself. Considering not every system support this function, so a
+function checking is necessary.
+
+Upstream-Status: Submitted [https://github.com/unfs3/unfs3/pull/35]
+
+Signed-off-by: Chen Qi <Qi.Chen@windriver.com>
+---
+ attr.c | 15 +++++++++++----
+ backend_unix.h | 2 ++
+ configure.ac | 1 +
+ 3 files changed, 14 insertions(+), 4 deletions(-)
+
+diff --git a/attr.c b/attr.c
+index 0ce9375..930ce6e 100644
+--- a/attr.c
++++ b/attr.c
+@@ -285,7 +285,7 @@ post_op_attr get_post_cached(struct svc_req * req)
+ static nfsstat3 set_time(const char *path, backend_statstruct buf, sattr3 new)
+ {
+ time_t new_atime, new_mtime;
+- struct utimbuf utim;
++ struct timeval stamps[2];
+ int res;
+
+ /* set atime and mtime */
+@@ -307,10 +307,17 @@ static nfsstat3 set_time(const char *path, backend_statstruct buf, sattr3 new)
+ else /* DONT_CHANGE */
+ new_mtime = buf.st_mtime;
+
+- utim.actime = new_atime;
+- utim.modtime = new_mtime;
++ stamps[0].tv_sec = new_atime;
++ stamps[0].tv_usec = 0;
++ stamps[1].tv_sec = new_mtime;
++ stamps[1].tv_usec = 0;
++
++#if HAVE_LUTIMES
++ res = backend_lutimes(path, stamps);
++#else
++ res = backend_utimes(path, stamps);
++#endif
+
+- res = backend_utime(path, &utim);
+ if (res == -1)
+ return setattr_err();
+ }
+diff --git a/backend_unix.h b/backend_unix.h
+index 4db72ae..9cce9ab 100644
+--- a/backend_unix.h
++++ b/backend_unix.h
+@@ -61,6 +61,8 @@
+ #define backend_symlink symlink
+ #define backend_truncate truncate
+ #define backend_utime utime
++#define backend_utimes utimes
++#define backend_lutimes lutimes
+ #define backend_statstruct struct stat
+ #define backend_dirstream DIR
+ #define backend_statvfsstruct struct statvfs
+diff --git a/configure.ac b/configure.ac
+index d46c905..c21afe3 100644
+--- a/configure.ac
++++ b/configure.ac
+@@ -32,6 +32,7 @@ AC_CHECK_FUNCS(setresuid setresgid)
+ AC_CHECK_FUNCS(vsyslog)
+ AC_CHECK_FUNCS(lchown)
+ AC_CHECK_FUNCS(setgroups)
++AC_CHECK_FUNCS(lutimes)
+ UNFS3_COMPILE_WARNINGS
+
+ PKG_CHECK_MODULES([TIRPC], [libtirpc])
+--
+2.40.0
+
@@ -17,6 +17,7 @@ SRC_URI = "git://github.com/unfs3/unfs3.git;protocol=https;branch=master \
file://0001-Alias-off64_t-to-off_t-on-linux-if-not-defined.patch \
file://0001-locate.c-Include-attr.h.patch \
file://0001-fix-building-on-macOS.patch \
+ file://0001-attr-fix-utime-for-symlink.patch \
"
SRCREV = "c8f2d2cd4529955419bad0e163f88d47ff176b8d"
UPSTREAM_CHECK_GITTAGREGEX = "unfs3\-(?P<pver>\d+(\.\d+)+)"