3619 cp -p clobbers permissions/ownership following symbolic links

@@ -18,10 +18,14 @@
  *
  * CDDL HEADER END
  */
 
 /*
+ * Copyright 2013 Nexenta Systems, Inc. All rights reserved.
+ */
+
+/*
  * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
  * Use is subject to license terms.
  */
 
 /*      Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */

@@ -1346,11 +1350,12 @@
         int rc;
 
         times[0] = ss.st_atim;
         times[1] = ss.st_mtim;
 
-        rc = utimensat(AT_FDCWD, to, times, 0);
+        rc = utimensat(AT_FDCWD, to, times,
+            ISLNK(s1) ? AT_SYMLINK_NOFOLLOW : 0);
 #ifdef XPG4
         if ((pflg || mve) && rc != 0) {
                 (void) fprintf(stderr,
                     gettext("%s: cannot set times for %s: "), cmd, to);
                 perror("");

@@ -1381,11 +1386,16 @@
  */
 static int
 chg_mode(char *target, uid_t uid, gid_t gid, mode_t mode)
 {
         int clearflg = 0; /* controls message printed upon chown() error */
+        struct stat st;
 
+        /* Don't change mode if target is symlink */
+        if (lstat(target, &st) == 0 && ISLNK(st))
+                return (0);
+
         if (chown(target, uid, gid) != 0) {
 #ifdef XPG4
                 if (mve) {
                         (void) fprintf(stderr, gettext("%s: cannot change"
                             " owner and group of %s: "), cmd, target);