copy: allow symlink timestamp preservation on more systems

* src/copy.c (utimens_symlink): Simplify by using lutimens.
* m4/jm-macros.m4 (coreutils_MACROS): Drop utimensat; gnulib does
this for us.
* tests/cp/preserve-slink-time: Recognize lutimes support.

1 files changed, 1 insertions, 9 deletions

diff --git a/src/copy.c b/src/copy.c
index 49e620afd..0a8b0e41d 100644
--- a/src/copy.c
+++ b/src/copy.c
@@ -123,20 +123,12 @@ static char const *top_level_dst_name;
 static inline int
 utimens_symlink (char const *file, struct timespec const *timespec)
 {
-  int err = 0;
-
-#if HAVE_UTIMENSAT
-  err = utimensat (AT_FDCWD, file, timespec, AT_SYMLINK_NOFOLLOW);
+  int err = lutimens (file, timespec);
   /* When configuring on a system with new headers and libraries, and
      running on one with a kernel that is old enough to lack the syscall,
      utimensat fails with ENOSYS.  Ignore that.  */
   if (err && errno == ENOSYS)
     err = 0;
-#else
-  (void) file;
-  (void) timespec;
-#endif
-
   return err;
 }