[src/trunk]: src/lib/libc/stdlib return the same errors as linux for ptsname_r

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

details:   https://anonhg.NetBSD.org/src/rev/d936b3ce3d87
branches:  trunk
changeset: 325830:d936b3ce3d87
user:      christos <christos%NetBSD.org@localhost>
date:      Wed Jan 08 02:17:30 2014 +0000

description:
return the same errors as linux for ptsname_r

diffstat:

 lib/libc/stdlib/ptsname.3 |  9 +++++++--
 lib/libc/stdlib/pty.c     |  8 +++++---
 2 files changed, 12 insertions(+), 5 deletions(-)

diffs (54 lines):

diff -r 865438c66c7c -r d936b3ce3d87 lib/libc/stdlib/ptsname.3
--- a/lib/libc/stdlib/ptsname.3 Wed Jan 08 02:15:42 2014 +0000
+++ b/lib/libc/stdlib/ptsname.3 Wed Jan 08 02:17:30 2014 +0000
@@ -1,4 +1,4 @@
-.\" $NetBSD: ptsname.3,v 1.7 2014/01/08 02:15:42 christos Exp $
+.\" $NetBSD: ptsname.3,v 1.8 2014/01/08 02:17:30 christos Exp $
 .\"
 .\" Copyright (c) 2004 The NetBSD Foundation, Inc.
 .\" All rights reserved.
@@ -115,7 +115,12 @@
 function
 will return:
 .Bl -tag -width Er
-.It Bq Er ENOSPC
+.It Bq Er EINVAL
+the
+.Fa buf
+argument is
+.Dv NULL .
+.It Bq Er ERANGE
 the name of the pseudo-terminal is longer than
 .Fa bufsiz
 characters plus the terminating
diff -r 865438c66c7c -r d936b3ce3d87 lib/libc/stdlib/pty.c
--- a/lib/libc/stdlib/pty.c     Wed Jan 08 02:15:42 2014 +0000
+++ b/lib/libc/stdlib/pty.c     Wed Jan 08 02:17:30 2014 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: pty.c,v 1.3 2014/01/08 02:15:42 christos Exp $ */
+/*     $NetBSD: pty.c,v 1.4 2014/01/08 02:17:30 christos Exp $ */
 
 /*-
  * Copyright (c) 2004 The NetBSD Foundation, Inc.
@@ -31,7 +31,7 @@
 
 #include <sys/cdefs.h>
 #if defined(LIBC_SCCS) && !defined(lint)
-__RCSID("$NetBSD: pty.c,v 1.3 2014/01/08 02:15:42 christos Exp $");
+__RCSID("$NetBSD: pty.c,v 1.4 2014/01/08 02:17:30 christos Exp $");
 #endif /* LIBC_SCCS and not lint */
 
 #include "namespace.h"
@@ -71,9 +71,11 @@
 ptsname_r(int fildes, char *buf, size_t buflen) {
        struct ptmget pm;
 
+       if (buf == NULL)
+               return EINVAL;
        if (ioctl(fildes, TIOCPTSNAME, &pm) == -1)
                return errno;
        if (strlcpy(buf, pm.sn, buflen) > buflen)
-               return ENOSPC;
+               return ERANGE;
        return 0;
 }