From 2c27d8dbdc8652bcbef4850460b480f04e76e0d8 Mon Sep 17 00:00:00 2001
From: Roland McGrath <roland@redhat.com>
Date: Tue, 1 Aug 1995 18:46:37 +0000
Subject: (child_execute_job): Close STDIN_FD and STDOUT_FD after dup'ing from
 them. Don't try to close all excess descriptors; getdtablesize might return a
 huge value.  Any open descriptors in the parent should have FD_CLOEXEC set.

---
 job.c | 12 ++++--------
 1 file changed, 4 insertions(+), 8 deletions(-)

(limited to 'job.c')

diff --git a/job.c b/job.c
index b62c2f5..7bb336c 100644
--- a/job.c
+++ b/job.c
@@ -1068,14 +1068,10 @@ child_execute_job (stdin_fd, stdout_fd, argv, envp)
     (void) dup2 (stdin_fd, 0);
   if (stdout_fd != 1)
     (void) dup2 (stdout_fd, 1);
-
-  /* Free up file descriptors.  */
-  {
-    register int d;
-    int max = getdtablesize ();
-    for (d = 3; d < max; ++d)
-      (void) close (d);
-  }
+  if (stdin_fd != 0)
+    (void) close (stdin_fd);
+  if (stdout_fd != 1)
+    (void) close (stdout_fd);
 
   /* Run the command.  */
   exec_command (argv, envp);
-- 
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