[src/trunk]: src/sys/kern tftproot_getfile(): return E2BIG when bootfile is t...

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

details:   https://anonhg.NetBSD.org/src/rev/ebf6268962bd
branches:  trunk
changeset: 447663:ebf6268962bd
user:      bad <bad%NetBSD.org@localhost>
date:      Sun Jan 20 21:26:13 2019 +0000

description:
tftproot_getfile(): return E2BIG when bootfile is to long.

tftproot_getfile() must return something != 0 to indicate error when
the bootfile is to long.
error just got set to 0 when nfs_boot_setrecvtimo() was called.

found during code review. compile tested only.

diffstat:

 sys/kern/subr_tftproot.c |  5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)

diffs (26 lines):

diff -r 9d2403caf259 -r ebf6268962bd sys/kern/subr_tftproot.c
--- a/sys/kern/subr_tftproot.c  Sun Jan 20 20:22:13 2019 +0000
+++ b/sys/kern/subr_tftproot.c  Sun Jan 20 21:26:13 2019 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: subr_tftproot.c,v 1.22 2018/10/27 09:13:45 mlelstv Exp $ */
+/*     $NetBSD: subr_tftproot.c,v 1.23 2019/01/20 21:26:13 bad Exp $ */
 
 /*-
  * Copyright (c) 2007 Emmanuel Dreyfus, all rights reserved.
@@ -39,7 +39,7 @@
 #include "opt_md.h"
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: subr_tftproot.c,v 1.22 2018/10/27 09:13:45 mlelstv Exp $");
+__KERNEL_RCSID(0, "$NetBSD: subr_tftproot.c,v 1.23 2019/01/20 21:26:13 bad Exp $");
 
 #include <sys/param.h>
 #include <sys/types.h>
@@ -246,6 +246,7 @@
        if (packetlen > MSIZE) {
                DPRINTF(("%s():%d boot filename too long (%ld bytes)\n", 
                    __func__, __LINE__, (long)namelen));
+               error = E2BIG;
                goto out;
        }