[src/trunk]: src/lib/libc/stdio Add checks for O_NDELAY [which indicates that...

[christos <christos%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/cfbc9a8477eb
branches:  trunk
changeset: 499794:cfbc9a8477eb
user:      christos <christos%NetBSD.org@localhost>
date:      Wed Nov 29 15:31:10 2000 +0000

description:
Add checks for O_NDELAY [which indicates that we only want plain files],
and return an error if the file was not plain.

diffstat:

 lib/libc/stdio/freopen.c |  19 +++++++++++++++++--
 1 files changed, 17 insertions(+), 2 deletions(-)

diffs (40 lines):

diff -r 0a1d61e385ed -r cfbc9a8477eb lib/libc/stdio/freopen.c
--- a/lib/libc/stdio/freopen.c  Wed Nov 29 15:30:20 2000 +0000
+++ b/lib/libc/stdio/freopen.c  Wed Nov 29 15:31:10 2000 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: freopen.c,v 1.10 1999/09/20 04:39:28 lukem Exp $       */
+/*     $NetBSD: freopen.c,v 1.11 2000/11/29 15:31:10 christos Exp $    */
 
 /*-
  * Copyright (c) 1990, 1993
@@ -41,7 +41,7 @@
 #if 0
 static char sccsid[] = "@(#)freopen.c  8.1 (Berkeley) 6/4/93";
 #else
-__RCSID("$NetBSD: freopen.c,v 1.10 1999/09/20 04:39:28 lukem Exp $");
+__RCSID("$NetBSD: freopen.c,v 1.11 2000/11/29 15:31:10 christos Exp $");
 #endif
 #endif /* LIBC_SCCS and not lint */
 
@@ -145,6 +145,21 @@
                return (NULL);
        }
 
+       if (oflags & O_NONBLOCK) {
+               struct stat st;
+               if (fstat(f, &st) == -1) {
+                       sverrno = errno;
+                       (void)close(f);
+                       errno = sverrno;
+                       return (NULL);
+               }
+               if (!S_ISREG(st.st_mode)) {
+                       (void)close(f);
+                       errno = EFTYPE;
+                       return (NULL);
+               }
+       }
+
        /*
         * If reopening something that was open before on a real file, try
         * to maintain the descriptor.  Various C library routines (perror)