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// SPDX-License-Identifier: GPL-2.0
#include <test_progs.h>
#include <linux/nbd.h>
#include "bpf_util.h"
void test_raw_tp_writable_reject_nbd_invalid(void)
{
__u32 duration = 0;
char error[4096];
int bpf_fd = -1, tp_fd = -1;
const struct bpf_insn program[] = {
/* r6 is our tp buffer */
BPF_LDX_MEM(BPF_DW, BPF_REG_6, BPF_REG_1, 0),
/* one byte beyond the end of the nbd_request struct */
BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_6,
sizeof(struct nbd_request)),
BPF_EXIT_INSN(),
};
LIBBPF_OPTS(bpf_prog_load_opts, opts,
.log_level = 2,
.log_buf = error,
.log_size = sizeof(error),
);
bpf_fd = bpf_prog_load(BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, NULL, "GPL v2",
program, ARRAY_SIZE(program),
&opts);
if (CHECK(bpf_fd < 0, "bpf_raw_tracepoint_writable load",
"failed: %d errno %d\n", bpf_fd, errno))
return;
tp_fd = bpf_raw_tracepoint_open("nbd_send_request", bpf_fd);
if (CHECK(tp_fd >= 0, "bpf_raw_tracepoint_writable open",
"erroneously succeeded\n"))
goto out_bpffd;
close(tp_fd);
out_bpffd:
close(bpf_fd);
}
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