149 lines
4.1 KiB
C
149 lines
4.1 KiB
C
// SPDX-License-Identifier: GPL-2.0
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#include <test_progs.h>
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#include "cgroup_helpers.h"
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#define FOO "/foo"
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#define BAR "/foo/bar/"
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#define PING_CMD "ping -q -c1 -w1 127.0.0.1 > /dev/null"
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static char bpf_log_buf[BPF_LOG_BUF_SIZE];
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static int prog_load(int verdict)
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{
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struct bpf_insn prog[] = {
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BPF_MOV64_IMM(BPF_REG_0, verdict), /* r0 = verdict */
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BPF_EXIT_INSN(),
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};
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size_t insns_cnt = ARRAY_SIZE(prog);
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return bpf_test_load_program(BPF_PROG_TYPE_CGROUP_SKB,
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prog, insns_cnt, "GPL", 0,
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bpf_log_buf, BPF_LOG_BUF_SIZE);
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}
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void serial_test_cgroup_attach_override(void)
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{
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int drop_prog = -1, allow_prog = -1, foo = -1, bar = -1;
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__u32 duration = 0;
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allow_prog = prog_load(1);
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if (CHECK(allow_prog < 0, "prog_load_allow",
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"verifier output:\n%s\n-------\n", bpf_log_buf))
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goto err;
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drop_prog = prog_load(0);
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if (CHECK(drop_prog < 0, "prog_load_drop",
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"verifier output:\n%s\n-------\n", bpf_log_buf))
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goto err;
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foo = test__join_cgroup(FOO);
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if (CHECK(foo < 0, "cgroup_join_foo", "cgroup setup failed\n"))
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goto err;
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if (CHECK(bpf_prog_attach(drop_prog, foo, BPF_CGROUP_INET_EGRESS,
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BPF_F_ALLOW_OVERRIDE),
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"prog_attach_drop_foo_override",
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"attach prog to %s failed, errno=%d\n", FOO, errno))
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goto err;
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if (CHECK(!system(PING_CMD), "ping_fail",
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"ping unexpectedly succeeded\n"))
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goto err;
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bar = test__join_cgroup(BAR);
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if (CHECK(bar < 0, "cgroup_join_bar", "cgroup setup failed\n"))
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goto err;
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if (CHECK(!system(PING_CMD), "ping_fail",
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"ping unexpectedly succeeded\n"))
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goto err;
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if (CHECK(bpf_prog_attach(allow_prog, bar, BPF_CGROUP_INET_EGRESS,
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BPF_F_ALLOW_OVERRIDE),
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"prog_attach_allow_bar_override",
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"attach prog to %s failed, errno=%d\n", BAR, errno))
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goto err;
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if (CHECK(system(PING_CMD), "ping_ok", "ping failed\n"))
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goto err;
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if (CHECK(bpf_prog_detach(bar, BPF_CGROUP_INET_EGRESS),
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"prog_detach_bar",
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"detach prog from %s failed, errno=%d\n", BAR, errno))
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goto err;
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if (CHECK(!system(PING_CMD), "ping_fail",
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"ping unexpectedly succeeded\n"))
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goto err;
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if (CHECK(bpf_prog_attach(allow_prog, bar, BPF_CGROUP_INET_EGRESS,
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BPF_F_ALLOW_OVERRIDE),
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"prog_attach_allow_bar_override",
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"attach prog to %s failed, errno=%d\n", BAR, errno))
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goto err;
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if (CHECK(bpf_prog_detach(foo, BPF_CGROUP_INET_EGRESS),
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"prog_detach_foo",
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"detach prog from %s failed, errno=%d\n", FOO, errno))
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goto err;
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if (CHECK(system(PING_CMD), "ping_ok", "ping failed\n"))
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goto err;
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if (CHECK(bpf_prog_attach(allow_prog, bar, BPF_CGROUP_INET_EGRESS,
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BPF_F_ALLOW_OVERRIDE),
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"prog_attach_allow_bar_override",
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"attach prog to %s failed, errno=%d\n", BAR, errno))
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goto err;
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if (CHECK(!bpf_prog_attach(allow_prog, bar, BPF_CGROUP_INET_EGRESS, 0),
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"fail_prog_attach_allow_bar_none",
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"attach prog to %s unexpectedly succeeded\n", BAR))
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goto err;
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if (CHECK(bpf_prog_detach(bar, BPF_CGROUP_INET_EGRESS),
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"prog_detach_bar",
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"detach prog from %s failed, errno=%d\n", BAR, errno))
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goto err;
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if (CHECK(!bpf_prog_detach(foo, BPF_CGROUP_INET_EGRESS),
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"fail_prog_detach_foo",
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"double detach from %s unexpectedly succeeded\n", FOO))
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goto err;
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if (CHECK(bpf_prog_attach(allow_prog, foo, BPF_CGROUP_INET_EGRESS, 0),
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"prog_attach_allow_foo_none",
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"attach prog to %s failed, errno=%d\n", FOO, errno))
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goto err;
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if (CHECK(!bpf_prog_attach(allow_prog, bar, BPF_CGROUP_INET_EGRESS, 0),
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"fail_prog_attach_allow_bar_none",
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"attach prog to %s unexpectedly succeeded\n", BAR))
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goto err;
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if (CHECK(!bpf_prog_attach(allow_prog, bar, BPF_CGROUP_INET_EGRESS,
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BPF_F_ALLOW_OVERRIDE),
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"fail_prog_attach_allow_bar_override",
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"attach prog to %s unexpectedly succeeded\n", BAR))
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goto err;
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if (CHECK(!bpf_prog_attach(allow_prog, foo, BPF_CGROUP_INET_EGRESS,
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BPF_F_ALLOW_OVERRIDE),
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"fail_prog_attach_allow_foo_override",
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"attach prog to %s unexpectedly succeeded\n", FOO))
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goto err;
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if (CHECK(bpf_prog_attach(drop_prog, foo, BPF_CGROUP_INET_EGRESS, 0),
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"prog_attach_drop_foo_none",
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"attach prog to %s failed, errno=%d\n", FOO, errno))
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goto err;
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err:
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close(foo);
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close(bar);
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close(allow_prog);
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close(drop_prog);
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}
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