// SPDX-License-Identifier: GPL-2.0 /* Copyright (c) 2024 Huawei Technologies Co., Ltd */ #include "vmlinux.h" #include <errno.h> #include <bpf/bpf_helpers.h> char _license[] SEC("license") = "GPL"; struct { __uint(type, BPF_MAP_TYPE_PROG_ARRAY); __uint(max_entries, 1); __uint(key_size, sizeof(__u32)); __uint(value_size, sizeof(__u32)); } jmp_table SEC(".maps"); SEC("lsm/file_permission") int lsm_file_permission_prog(void *ctx) { return 0; } SEC("lsm/kernfs_init_security") int lsm_kernfs_init_security_prog(void *ctx) { return 0; } SEC("lsm/kernfs_init_security") int lsm_kernfs_init_security_entry(void *ctx) { bpf_tail_call_static(ctx, &jmp_table, 0); return 0; }