// SPDX-License-Identifier: GPL-2.0 /* * Copyright 2020 Google LLC. */ #include <linux/bpf.h> #include <errno.h> #include <bpf/bpf_helpers.h> #include <bpf/bpf_tracing.h> char _license[] SEC("license") = "GPL"; struct { __uint(type, BPF_MAP_TYPE_TASK_STORAGE); __uint(map_flags, BPF_F_NO_PREALLOC); __type(key, int); __type(value, int); } secure_exec_task_map SEC(".maps"); SEC("lsm/bprm_creds_for_exec") int BPF_PROG(secure_exec, struct linux_binprm *bprm) { int *secureexec; secureexec = bpf_task_storage_get(&secure_exec_task_map, bpf_get_current_task_btf(), 0, BPF_LOCAL_STORAGE_GET_F_CREATE); if (secureexec && *secureexec) bpf_bprm_opts_set(bprm, BPF_F_BPRM_SECUREEXEC); return 0; }