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