[src/trunk]: src/tests/net/bpf Add a test case for BIOCGBLEN and BIOCSBLEN

[ozaki-r <ozaki-r%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/52c08149375e
branches:  trunk
changeset: 821310:52c08149375e
user:      ozaki-r <ozaki-r%NetBSD.org@localhost>
date:      Wed Feb 01 08:04:49 2017 +0000

description:
Add a test case for BIOCGBLEN and BIOCSBLEN

diffstat:

 tests/net/bpf/t_bpf.c |  38 ++++++++++++++++++++++++++++++++++++--
 1 files changed, 36 insertions(+), 2 deletions(-)

diffs (65 lines):

diff -r ada616672d55 -r 52c08149375e tests/net/bpf/t_bpf.c
--- a/tests/net/bpf/t_bpf.c     Wed Feb 01 07:50:03 2017 +0000
+++ b/tests/net/bpf/t_bpf.c     Wed Feb 01 08:04:49 2017 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: t_bpf.c,v 1.6 2017/01/13 21:30:42 christos Exp $       */
+/*     $NetBSD: t_bpf.c,v 1.7 2017/02/01 08:04:49 ozaki-r Exp $        */
 
 /*-
  * Copyright (c) 2010 Antti Kantee.  All Rights Reserved.
@@ -25,7 +25,7 @@
  * SUCH DAMAGE.
  */
 #include <sys/cdefs.h>
-__RCSID("$NetBSD: t_bpf.c,v 1.6 2017/01/13 21:30:42 christos Exp $");
+__RCSID("$NetBSD: t_bpf.c,v 1.7 2017/02/01 08:04:49 ozaki-r Exp $");
 
 #include <sys/param.h>
 #include <sys/ioctl.h>
@@ -166,6 +166,39 @@
 }
 #endif /* #if (SIZE_MAX > UINT_MAX) */
 
+ATF_TC(bpf_ioctl_BLEN);
+ATF_TC_HEAD(bpf_ioctl_BLEN, tc)
+{
+
+       atf_tc_set_md_var(tc, "descr", "Checks behaviors of BIOCGBLEN and "
+           "BIOCSBLEN");
+}
+
+ATF_TC_BODY(bpf_ioctl_BLEN, tc)
+{
+       struct ifreq ifr;
+       int ifnum, bpfd;
+       u_int blen = 0;
+
+       RZ(rump_init());
+       RZ(rump_pub_shmif_create(NULL, &ifnum));
+       sprintf(ifr.ifr_name, "shmif%d", ifnum);
+
+       RL(bpfd = rump_sys_open("/dev/bpf", O_RDWR));
+
+       RL(rump_sys_ioctl(bpfd, BIOCGBLEN, &blen));
+       ATF_REQUIRE(blen != 0);
+       blen = 100;
+       RL(rump_sys_ioctl(bpfd, BIOCSBLEN, &blen));
+       RL(rump_sys_ioctl(bpfd, BIOCGBLEN, &blen));
+       ATF_REQUIRE_EQ(blen, 100);
+
+       RL(rump_sys_ioctl(bpfd, BIOCSETIF, &ifr));
+
+       ATF_REQUIRE_EQ_MSG(rump_sys_ioctl(bpfd, BIOCSBLEN, &blen), -1,
+           "Don't allow to change buflen after binding bpf to an interface");
+}
+
 ATF_TP_ADD_TCS(tp)
 {
 
@@ -173,5 +206,6 @@
 #if (SIZE_MAX > UINT_MAX)
        ATF_TP_ADD_TC(tp, bpfwritetrunc);
 #endif
+       ATF_TP_ADD_TC(tp, bpf_ioctl_BLEN);
        return atf_no_error();
 }