From: Jim Meyering <jim@meyering.net>
Date: Fri, 12 Aug 2005 08:25:52 +0000 (+0000)
Subject: (main): Explain why we reopen stdin for write-only access.
X-Git-Tag: CPPI-1_12~188
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=1442403a5da3f891b6f7f07b4f36a687c39e94c0;p=thirdparty%2Fcoreutils.git

(main): Explain why we reopen stdin for write-only access.
---

diff --git a/src/nohup.c b/src/nohup.c
index b8b8c76b08..bd3bc3bd70 100644
--- a/src/nohup.c
+++ b/src/nohup.c
@@ -97,7 +97,9 @@ main (int argc, char **argv)
       usage (NOHUP_FAILURE);
     }
 
-  /* If standard input is a tty, replace it with /dev/null.  */
+  /* If standard input is a tty, replace it with /dev/null.
+     Note that it is deliberately opened for *writing*,
+     to ensure any read evokes an error.  */
   if (isatty (STDIN_FILENO))
     fd_reopen (STDIN_FILENO, "/dev/null", O_WRONLY, 0);