78 lines
1.9 KiB
C
78 lines
1.9 KiB
C
// SPDX-License-Identifier: GPL-2.0
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// Copyright (c) 2019 Facebook
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#include <linux/bpf.h>
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#include <stdint.h>
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#include <bpf/bpf_helpers.h>
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#include <bpf/bpf_core_read.h>
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char _license[] SEC("license") = "GPL";
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struct {
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char in[256];
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char out[256];
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} data = {};
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struct core_reloc_size_output {
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int int_sz;
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int int_off;
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int struct_sz;
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int struct_off;
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int union_sz;
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int union_off;
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int arr_sz;
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int arr_off;
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int arr_elem_sz;
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int arr_elem_off;
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int ptr_sz;
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int ptr_off;
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int enum_sz;
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int enum_off;
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int float_sz;
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int float_off;
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};
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struct core_reloc_size {
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int int_field;
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struct { int x; } struct_field;
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union { int x; } union_field;
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int arr_field[4];
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void *ptr_field;
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enum { VALUE = 123 } enum_field;
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float float_field;
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};
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SEC("raw_tracepoint/sys_enter")
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int test_core_size(void *ctx)
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{
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struct core_reloc_size *in = (void *)&data.in;
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struct core_reloc_size_output *out = (void *)&data.out;
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out->int_sz = bpf_core_field_size(in->int_field);
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out->int_off = bpf_core_field_offset(in->int_field);
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out->struct_sz = bpf_core_field_size(in->struct_field);
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out->struct_off = bpf_core_field_offset(in->struct_field);
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out->union_sz = bpf_core_field_size(in->union_field);
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out->union_off = bpf_core_field_offset(in->union_field);
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out->arr_sz = bpf_core_field_size(in->arr_field);
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out->arr_off = bpf_core_field_offset(in->arr_field);
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out->arr_elem_sz = bpf_core_field_size(struct core_reloc_size, arr_field[1]);
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out->arr_elem_off = bpf_core_field_offset(struct core_reloc_size, arr_field[1]);
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out->ptr_sz = bpf_core_field_size(struct core_reloc_size, ptr_field);
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out->ptr_off = bpf_core_field_offset(struct core_reloc_size, ptr_field);
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out->enum_sz = bpf_core_field_size(struct core_reloc_size, enum_field);
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out->enum_off = bpf_core_field_offset(struct core_reloc_size, enum_field);
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out->float_sz = bpf_core_field_size(struct core_reloc_size, float_field);
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out->float_off = bpf_core_field_offset(struct core_reloc_size, float_field);
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return 0;
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}
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