From 5356c27eb2103ee03fcd036afb21a63e063842ba Mon Sep 17 00:00:00 2001
From: Laurent Bercot <ska-skaware@skarnet.org>
Date: Tue, 17 Oct 2017 14:44:05 +0000
Subject:  Limit prefix size to NAME_MAX

---
 src/libs6rc/s6rc_livedir_prefixsize.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/libs6rc/s6rc_livedir_prefixsize.c b/src/libs6rc/s6rc_livedir_prefixsize.c
index daa8481..38d060a 100644
--- a/src/libs6rc/s6rc_livedir_prefixsize.c
+++ b/src/libs6rc/s6rc_livedir_prefixsize.c
@@ -1,5 +1,6 @@
 /* ISC license. */
 
+#include <limits.h>
 #include <string.h>
 #include <sys/stat.h>
 #include <errno.h>
@@ -19,6 +20,7 @@ int s6rc_livedir_prefixsize (char const *live, size_t *n)
     return 1 ;
   }
   if (!S_ISREG(st.st_mode)) return (errno = EINVAL, 0) ;
+  if (st.st_size > NAME_MAX) return (errno = ENAMETOOLONG, 0) ;
   *n = st.st_size ;
   return 1 ;
 }
-- 
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