From 9582effb8d97e9885e2226205ab02437b51db230 Mon Sep 17 00:00:00 2001
From: Colin Walters <walters@verbum.org>
Date: Sat, 26 May 2012 11:55:12 -0400
Subject: [PATCH] core: Don't checkout symbolic links via hardlink

Doing so can easily get us up to the maximum ext4 hardlink count.
---
 src/libostree/ostree-repo.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/src/libostree/ostree-repo.c b/src/libostree/ostree-repo.c
index 22745883..a3ff5565 100644
--- a/src/libostree/ostree-repo.c
+++ b/src/libostree/ostree-repo.c
@@ -4179,6 +4179,17 @@ find_loose_for_checkout (OstreeRepo             *self,
             }
           self = self->parent_repo;
         }
+      else if (S_ISLNK (stbuf.st_mode))
+        {
+          /* Don't check out symbolic links via hardlink; it's very easy
+           * to hit the maximum number of hardlinks to an inode this way,
+           * especially since right now we have a lot of symbolic links to
+           * busybox.
+           *
+           * fs/ext4/ext4.h:#define EXT4_LINK_MAX		65000
+           */
+          self = self->parent_repo;
+        }
       else
         break;