tar: cry murder and bail out if file shrinks under us while we tar it up

git-svn-id: svn://busybox.net/trunk/busybox@16653 69ca8d6d-28ef-0310-b511-8ec308f3f277

1 files changed, 1 insertions, 2 deletions

diff --git a/libbb/copyfd.c b/libbb/copyfd.c
index 87126eb72..601c51ce4 100644
--- a/libbb/copyfd.c
+++ b/libbb/copyfd.c
@@ -46,8 +46,7 @@ static off_t bb_full_fd_action(int src_fd, int dst_fd, off_t size)
                 } else if (rd < 0) {
                         bb_perror_msg(bb_msg_read_error);
                         break;
-                } else if (rd == 0) {
-                        /* All done. */
+                } else { /* eof - all done. */
                         status = 0;
                         break;
                 }