1 files changed, 6 insertions, 1 deletions
diff --git a/src/libs6/s6_svstatus_read.c b/src/libs6/s6_svstatus_read.c
index 376a0c7..9b21d44 100644
--- a/src/libs6/s6_svstatus_read.c
+++ b/src/libs6/s6_svstatus_read.c
@@ -1,17 +1,22 @@
 /* ISC license. */
 
+#include <errno.h>
 #include <string.h>
+
 #include <skalibs/djbunix.h>
 #include <s6/supervise.h>
 
 int s6_svstatus_read (char const *dir, s6_svstatus_t *status)
 {
+  ssize_t r ;
   size_t n = strlen(dir) ;
   char pack[S6_SVSTATUS_SIZE] ;
   char tmp[n + 1 + sizeof(S6_SVSTATUS_FILENAME)] ;
   memcpy(tmp, dir, n) ;
   memcpy(tmp + n, "/" S6_SVSTATUS_FILENAME, 1 + sizeof(S6_SVSTATUS_FILENAME)) ;
-  if (openreadnclose(tmp, pack, S6_SVSTATUS_SIZE) < S6_SVSTATUS_SIZE) return 0 ;
+  r = openreadnclose(tmp, pack, S6_SVSTATUS_SIZE) ;
+  if (r == -1) return 0 ;
+  if (r < S6_SVSTATUS_SIZE) return (errno = EPIPE, 0) ;
   s6_svstatus_unpack(pack, status) ;
   return 1 ;
 }