62 lines
1.8 KiB
C
62 lines
1.8 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/* Copyright (c) 2019 Facebook */
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#include <test_progs.h>
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#include "test_ksyms.skel.h"
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#include <sys/stat.h>
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static int duration;
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void test_ksyms(void)
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{
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const char *btf_path = "/sys/kernel/btf/vmlinux";
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struct test_ksyms *skel;
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struct test_ksyms__data *data;
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__u64 link_fops_addr, per_cpu_start_addr;
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struct stat st;
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__u64 btf_size;
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int err;
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err = kallsyms_find("bpf_link_fops", &link_fops_addr);
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if (CHECK(err == -EINVAL, "kallsyms_fopen", "failed to open: %d\n", errno))
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return;
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if (CHECK(err == -ENOENT, "ksym_find", "symbol 'bpf_link_fops' not found\n"))
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return;
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err = kallsyms_find("__per_cpu_start", &per_cpu_start_addr);
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if (CHECK(err == -EINVAL, "kallsyms_fopen", "failed to open: %d\n", errno))
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return;
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if (CHECK(err == -ENOENT, "ksym_find", "symbol 'per_cpu_start' not found\n"))
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return;
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if (CHECK(stat(btf_path, &st), "stat_btf", "err %d\n", errno))
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return;
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btf_size = st.st_size;
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skel = test_ksyms__open_and_load();
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if (CHECK(!skel, "skel_open", "failed to open and load skeleton\n"))
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return;
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err = test_ksyms__attach(skel);
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if (CHECK(err, "skel_attach", "skeleton attach failed: %d\n", err))
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goto cleanup;
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/* trigger tracepoint */
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usleep(1);
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data = skel->data;
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CHECK(data->out__bpf_link_fops != link_fops_addr, "bpf_link_fops",
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"got 0x%llx, exp 0x%llx\n",
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data->out__bpf_link_fops, link_fops_addr);
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CHECK(data->out__bpf_link_fops1 != 0, "bpf_link_fops1",
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"got %llu, exp %llu\n", data->out__bpf_link_fops1, (__u64)0);
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CHECK(data->out__btf_size != btf_size, "btf_size",
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"got %llu, exp %llu\n", data->out__btf_size, btf_size);
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CHECK(data->out__per_cpu_start != per_cpu_start_addr, "__per_cpu_start",
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"got %llu, exp %llu\n", data->out__per_cpu_start,
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per_cpu_start_addr);
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cleanup:
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test_ksyms__destroy(skel);
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}
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