Do not add lookup table entry for empty files

[wimlib] / src / modify.c

diff --git a/src/modify.c b/src/modify.c
index 141f2dd8aac45cb0de271803cb2a6d71a4258f8e..ff6e106cfba9b9eeb6e2e2bedb2214f10a93c8bf 100644 (file)
--- a/src/modify.c
+++ b/src/modify.c
@@ -186,6 +186,10 @@ static int build_dentry_tree(struct dentry **root_ret, const char *root_disk_pat
                struct lookup_table_entry *lte;
                u8 hash[SHA1_HASH_SIZE];
 
+               /* Empty files do not have to have a lookup table entry. */
+               if (root_stbuf.st_size == 0)
+                       goto out;
+
                /* For each regular file, we must check to see if the file is in
                 * the lookup table already; if it is, we increment its refcnt;
                 * otherwise, we create a new lookup table entry and insert it.
@@ -219,6 +223,7 @@ static int build_dentry_tree(struct dentry **root_ret, const char *root_disk_pat
                }
                root->lte = lte;
        }
+out:
        *root_ret = root;
        return ret;
 }