From: Roland McGrath <roland@redhat.com>
Date: Tue, 1 Aug 1995 18:38:49 +0000 (+0000)
Subject: (start_job_command): Set FD_CLOEXEC flag on BAD_STDIN descriptor.
X-Git-Tag: 3.74.1~61
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d02b26a4b8373db81598db9ebe6c2e82cbd6e1ba;p=thirdparty%2Fmake.git

(start_job_command): Set FD_CLOEXEC flag on BAD_STDIN descriptor.
---

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
 	}
     }