// SPDX-License-Identifier: GPL-2.0

/*
 * Copyright (C) 2020 Google LLC.
 */
#include <linux/lsm_hooks.h>
#include <linux/bpf_lsm.h>
#include <uapi/linux/lsm.h>

static struct security_hook_list bpf_lsm_hooks[] __ro_after_init = {
        #define LSM_HOOK(RET, DEFAULT, NAME, ...) \
        LSM_HOOK_INIT(NAME, bpf_lsm_##NAME),
        #include <linux/lsm_hook_defs.h>
        #undef LSM_HOOK
        LSM_HOOK_INIT(inode_free_security, bpf_inode_storage_free),
};

static const struct lsm_id bpf_lsmid = {
        .name = "bpf",
        .id = LSM_ID_BPF,
};

static int __init bpf_lsm_init(void)
{
        security_add_hooks(bpf_lsm_hooks, ARRAY_SIZE(bpf_lsm_hooks),
                           &bpf_lsmid);
        pr_info("LSM support for eBPF active\n");
        return 0;
}

struct lsm_blob_sizes bpf_lsm_blob_sizes __ro_after_init = {
        .lbs_inode = sizeof(struct bpf_storage_blob),
};

DEFINE_LSM(bpf) = {
        .id = &bpf_lsmid,
        .init = bpf_lsm_init,
        .blobs = &bpf_lsm_blob_sizes
};