Call become_root() before SMB_VFS_NEXT_NTIMES() to touch
a removed file that is owned by another user.
Backport from SVN SAMBA_3_2_0 r23691 (GPLv2).

diff -rup samba-3.0.28a/source/modules/vfs_recycle.c samba-3.0.28a.osstech/source/modules/vfs_recycle.c
--- samba-3.0.28a/source/modules/vfs_recycle.c	2008-03-09 00:33:35.000000000 +0900
+++ samba-3.0.28a.osstech/source/modules/vfs_recycle.c	2008-04-18 02:41:26.000000000 +0900
@@ -390,6 +390,7 @@ static void recycle_do_touch(vfs_handle_
 {
 	SMB_STRUCT_STAT st;
 	struct timespec ts[2];
+	int ret, err;
 	
 	if (SMB_VFS_NEXT_STAT(handle, fname, &st) != 0) {
 		DEBUG(0,("recycle: stat for %s returned %s\n", fname, strerror(errno)));
@@ -398,8 +399,13 @@ static void recycle_do_touch(vfs_handle_
 	ts[0] = timespec_current(); /* atime */
 	ts[1] = touch_mtime ? ts[0] : get_mtimespec(&st); /* mtime */
 
-	if (SMB_VFS_NEXT_NTIMES(handle, fname, ts) == -1 ) {
-		DEBUG(0, ("recycle: touching %s failed, reason = %s\n", fname, strerror(errno)));
+	become_root();
+	ret = SMB_VFS_NEXT_NTIMES(handle, fname, ts);
+	err = errno;
+	unbecome_root();
+	if (ret == -1 ) {
+		DEBUG(0, ("recycle: touching %s failed, reason = %s\n",
+			  fname, strerror(err)));
 	}
 }