53 lines
971 B
C
53 lines
971 B
C
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#include <sys/types.h>
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#include <sys/ioctl.h>
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#include <net/bpf.h>
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#include <atf-c.h>
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#include <fcntl.h>
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#include <rump/rump.h>
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#include <rump/rump_syscalls.h>
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ATF_TC(div_by_zero);
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ATF_TC_HEAD(div_by_zero, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Check that BPF rejects a filter "
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"which divides by 0");
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}
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ATF_TC_BODY(div_by_zero, tc)
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{
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struct bpf_program bp;
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int fd;
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/*
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* Source code for following program:
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* link[0:4]/0 = 2
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*/
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struct bpf_insn bins[] = {
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{ 0x20, 0, 0, 0x00000000 },
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{ 0x34, 0, 0, 0x00000000 },
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{ 0x15, 0, 1, 0x00000002 },
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{ 0x6, 0, 0, 0x00000060 },
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{ 0x6, 0, 0, 0x00000000 },
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};
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bp.bf_len = __arraycount(bins);
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bp.bf_insns = bins;
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rump_init();
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fd = rump_sys_open("/dev/bpf", O_RDWR);
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ATF_CHECK(fd != -1);
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ATF_REQUIRE_EQ_MSG(rump_sys_ioctl(fd, BIOCSETF, &bp), -1,
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"bpf accepted program with division by zero");
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}
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ATF_TP_ADD_TCS(tp)
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{
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ATF_TP_ADD_TC(tp, div_by_zero);
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return atf_no_error();
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}
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