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Add bpfilternegjmp test.

This commit is contained in:
alnsn 2015-02-11 23:39:07 +00:00
parent bc33ca73a3
commit 542a94c076
1 changed files with 27 additions and 2 deletions
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29
tests/net/bpfilter/t_bpfilter.c
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@ -1,4 +1,4 @@
/* $NetBSD: t_bpfilter.c,v 1.9 2015/02/11 19:37:37 alnsn Exp $ */
/* $NetBSD: t_bpfilter.c,v 1.10 2015/02/11 23:39:07 alnsn Exp $ */
/*-
* Copyright (c) 2012 The NetBSD Foundation, Inc.
@ -25,7 +25,7 @@
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__RCSID("$NetBSD: t_bpfilter.c,v 1.9 2015/02/11 19:37:37 alnsn Exp $");
__RCSID("$NetBSD: t_bpfilter.c,v 1.10 2015/02/11 23:39:07 alnsn Exp $");
#include <sys/param.h>
#include <sys/ioctl.h>
@ -120,6 +120,12 @@ static struct bpf_insn badjmp_prog[] = {
BPF_STMT(BPF_RET+BPF_A, 0),
};
static struct bpf_insn negjmp_prog[] = {
BPF_STMT(BPF_JMP+BPF_JA, 0),
BPF_STMT(BPF_JMP+BPF_JA, UINT32_MAX - 1), // -2
BPF_STMT(BPF_RET+BPF_A, 0),
};
static struct bpf_insn badret_prog[] = {
BPF_STMT(BPF_RET+BPF_A+0x8000, 0),
};
@ -414,6 +420,24 @@ ATF_TC_BODY(bpfilterbadjmp, tc)
ATF_CHECK_ERRNO(EINVAL, send_bpf_prog("bpfilterbadjmp", &prog) == -1);
}
ATF_TC(bpfilternegjmp);
ATF_TC_HEAD(bpfilternegjmp, tc)
{
atf_tc_set_md_var(tc, "descr", "Checks that bpf program that "
"jumps backwards is rejected by the kernel");
atf_tc_set_md_var(tc, "timeout", "30");
}
ATF_TC_BODY(bpfilternegjmp, tc)
{
struct bpf_program prog;
prog.bf_len = __arraycount(negjmp_prog);
prog.bf_insns = negjmp_prog;
ATF_CHECK_ERRNO(EINVAL, send_bpf_prog("bpfilternegjmp", &prog) == -1);
}
ATF_TC(bpfilterbadret);
ATF_TC_HEAD(bpfilterbadret, tc)
{
@ -451,6 +475,7 @@ ATF_TP_ADD_TCS(tp)
ATF_TP_ADD_TC(tp, bpfilternoinitA);
ATF_TP_ADD_TC(tp, bpfilternoinitX);
ATF_TP_ADD_TC(tp, bpfilterbadjmp);
ATF_TP_ADD_TC(tp, bpfilternegjmp);
ATF_TP_ADD_TC(tp, bpfilterbadret);
return atf_no_error();