Partial backport of:

commit 04986243d1af37ac0177ed2f9db0a066ebd2b212
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date:   Wed Jul 15 19:35:58 2020 +0000

    Remove internal usage of extensible stat functions

    It replaces the internal usage of __{f,l}xstat{at}{64} with the
    __{f,l}stat{at}{64}.  It should not change the generate code since
    sys/stat.h explicit defines redirections to internal calls back to
    xstat* symbols.

    Checked with a build for all affected ABIs.  I also check on
    x86_64-linux-gnu and i686-linux-gnu.

    Reviewed-by: Lukasz Majewski <lukma@denx.de>

Only the changes to include/sys/stat.h and sysdeps/posix/tempname.c
are included here.

diff --git a/include/sys/stat.h b/include/sys/stat.h
index b82d4527801d4797..c5b1938b87c9c5c3 100644
--- a/include/sys/stat.h
+++ b/include/sys/stat.h
@@ -52,6 +52,7 @@ extern __typeof (__fxstatat64) __fxstatat64 attribute_hidden;
 #define lstat64(fname, buf)  __lxstat64 (_STAT_VER, fname, buf)
 #define __lstat64(fname, buf)  __lxstat64 (_STAT_VER, fname, buf)
 #define stat64(fname, buf) __xstat64 (_STAT_VER, fname, buf)
+#define __stat64(fname, buf) __xstat64 (_STAT_VER, fname, buf)
 #define fstat64(fd, buf) __fxstat64 (_STAT_VER, fd, buf)
 #define __fstat64(fd, buf) __fxstat64 (_STAT_VER, fd, buf)
 #define fstat(fd, buf) __fxstat (_STAT_VER, fd, buf)
diff --git a/sysdeps/posix/tempname.c b/sysdeps/posix/tempname.c
index 61d7a9f36d37abae..a7b404cf4410cb00 100644
--- a/sysdeps/posix/tempname.c
+++ b/sysdeps/posix/tempname.c
@@ -66,7 +66,6 @@
 # define __gettimeofday gettimeofday
 # define __mkdir mkdir
 # define __open open
-# define __lxstat64(version, file, buf) lstat (file, buf)
 # define __secure_getenv secure_getenv
 #endif
 
@@ -97,7 +96,7 @@ static int
 direxists (const char *dir)
 {
   struct_stat64 buf;
-  return __xstat64 (_STAT_VER, dir, &buf) == 0 && S_ISDIR (buf.st_mode);
+  return __stat64 (dir, &buf) == 0 && S_ISDIR (buf.st_mode);
 }
 
 /* Path search algorithm, for tmpnam, tmpfile, etc.  If DIR is
@@ -252,10 +251,10 @@ __gen_tempname (char *tmpl, int suffixlen, int flags, int kind)
 
 	case __GT_NOCREATE:
 	  /* This case is backward from the other three.  __gen_tempname
-	     succeeds if __xstat fails because the name does not exist.
+	     succeeds if lstat fails because the name does not exist.
 	     Note the continue to bypass the common logic at the bottom
 	     of the loop.  */
-	  if (__lxstat64 (_STAT_VER, tmpl, &st) < 0)
+	  if (__lstat64 (tmpl, &st) < 0)
 	    {
 	      if (errno == ENOENT)
 		{