Fix exec shell check for really small files

	* exec/hashexec.c (check_hashbang): Set `e->error' to 0 before
	calling map(). On error, check `e->error' instead of `errno', and
	default `e->error' to ENOEXEC.

1 files changed, 6 insertions, 2 deletions

diff --git a/exec/hashexec.c b/exec/hashexec.c
index f880983d..2aa3844b 100644
--- a/exec/hashexec.c
+++ b/exec/hashexec.c
@@ -127,12 +127,16 @@ check_hashbang (struct execdata *e,
 				    name, flags, 0, result);
     }
 
-  const char *page = map (e, 0, 2);
+  const char *page;
   char interp_buf[vm_page_size - 2 + 1];
 
+  e->error = 0;
+  page = map (e, 0, 2);
+
   if (!page)
     {
-      e->error = errno;
+      if (!e->error)
+	e->error = ENOEXEC;
       return;
     }