From d02b26a4b8373db81598db9ebe6c2e82cbd6e1ba Mon Sep 17 00:00:00 2001
From: Roland McGrath <roland@redhat.com>
Date: Tue, 1 Aug 1995 18:38:49 +0000
Subject: [PATCH] (start_job_command): Set FD_CLOEXEC flag on BAD_STDIN
descriptor.
---
job.c | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/job.c b/job.c
index 77bbbae9..b62c2f55 100644
--- a/job.c
+++ b/job.c
@@ -35,6 +35,12 @@ static char *dos_bename;
static int dos_batch_file;
#endif /* MSDOS. */
+#ifdef HAVE_FCNTL_H
+#include <fcntl.h>
+#else
+#include <sys/file.h>
+#endif
+
/* If NGROUPS_MAX == 0 then try other methods for finding a real value. */
#if defined (NGROUPS_MAX) && NGROUPS_MAX == 0
@@ -641,6 +647,16 @@ start_job_command (child)
(void) close (pd[1]);
/* Save the read side. */
bad_stdin = pd[0];
+
+ /* Set the descriptor to close on exec, so it does not litter any
+ child's descriptor table. When it is dup2'd onto descriptor 0,
+ that descriptor will not close on exec. */
+#ifdef FD_SETFD
+#ifndef FD_CLOEXEC
+#define FD_CLOEXEC 1
+#endif
+ (void) fcntl (bad_stdin, F_SETFD, FD_CLOEXEC);
+#endif
}
}