// SPDX-License-Identifier: GPL-2.0 // Copyright (c) 2019 Facebook #include <linux/bpf.h> #include <stdint.h> #include <bpf/bpf_helpers.h> #include <bpf/bpf_core_read.h> char _license[] SEC("license") = "GPL"; struct { char in[256]; char out[256]; } data = {}; struct core_reloc_arrays_output { int a2; int a3; char b123; int c1c; int d00d; int f01c; }; struct core_reloc_arrays_substruct { int c; int d; }; struct core_reloc_arrays { int a[5]; char b[2][3][4]; struct core_reloc_arrays_substruct c[3]; struct core_reloc_arrays_substruct d[1][2]; struct core_reloc_arrays_substruct f[][2]; }; #define CORE_READ(dst, src) bpf_core_read(dst, sizeof(*(dst)), src) SEC("raw_tracepoint/sys_enter") int test_core_arrays(void *ctx) { struct core_reloc_arrays *in = (void *)&data.in; struct core_reloc_arrays_output *out = (void *)&data.out; int *a; if (CORE_READ(&out->a2, &in->a[2])) return 1; if (CORE_READ(&out->b123, &in->b[1][2][3])) return 1; if (CORE_READ(&out->c1c, &in->c[1].c)) return 1; if (CORE_READ(&out->d00d, &in->d[0][0].d)) return 1; if (CORE_READ(&out->f01c, &in->f[0][1].c)) return 1; a = __builtin_preserve_access_index(({ in->a; })); out->a3 = a[0] + a[1] + a[2] + a[3]; return 0; }