54 lines
1.4 KiB
C
54 lines
1.4 KiB
C
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// 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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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 (!ASSERT_NEQ(err, -EINVAL, "bpf_link_fops: kallsyms_fopen"))
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return;
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if (!ASSERT_NEQ(err, -ENOENT, "bpf_link_fops: ksym_find"))
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return;
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err = kallsyms_find("__per_cpu_start", &per_cpu_start_addr);
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if (!ASSERT_NEQ(err, -EINVAL, "__per_cpu_start: kallsyms_fopen"))
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return;
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if (!ASSERT_NEQ(err, -ENOENT, "__per_cpu_start: ksym_find"))
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return;
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if (!ASSERT_OK(stat(btf_path, &st), "stat_btf"))
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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 (!ASSERT_OK_PTR(skel, "test_ksyms__open_and_load"))
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return;
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err = test_ksyms__attach(skel);
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if (!ASSERT_OK(err, "test_ksyms__attach"))
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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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ASSERT_EQ(data->out__bpf_link_fops, link_fops_addr, "bpf_link_fops");
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ASSERT_EQ(data->out__bpf_link_fops1, 0, "bpf_link_fops1");
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ASSERT_EQ(data->out__btf_size, btf_size, "btf_size");
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ASSERT_EQ(data->out__per_cpu_start, per_cpu_start_addr, "__per_cpu_start");
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cleanup:
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test_ksyms__destroy(skel);
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}
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