2020-03-29 00:43:51 +00:00
|
|
|
/* SPDX-License-Identifier: GPL-2.0 */
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Copyright (C) 2020 Google LLC.
|
|
|
|
*/
|
|
|
|
|
|
|
|
#ifndef _LINUX_BPF_LSM_H
|
|
|
|
#define _LINUX_BPF_LSM_H
|
|
|
|
|
2020-11-06 10:37:40 +00:00
|
|
|
#include <linux/sched.h>
|
2020-03-29 00:43:51 +00:00
|
|
|
#include <linux/bpf.h>
|
|
|
|
#include <linux/lsm_hooks.h>
|
|
|
|
|
|
|
|
#ifdef CONFIG_BPF_LSM
|
|
|
|
|
|
|
|
#define LSM_HOOK(RET, DEFAULT, NAME, ...) \
|
|
|
|
RET bpf_lsm_##NAME(__VA_ARGS__);
|
|
|
|
#include <linux/lsm_hook_defs.h>
|
|
|
|
#undef LSM_HOOK
|
|
|
|
|
2020-08-25 18:29:17 +00:00
|
|
|
struct bpf_storage_blob {
|
|
|
|
struct bpf_local_storage __rcu *storage;
|
|
|
|
};
|
|
|
|
|
|
|
|
extern struct lsm_blob_sizes bpf_lsm_blob_sizes;
|
|
|
|
|
2020-03-29 00:43:52 +00:00
|
|
|
int bpf_lsm_verify_prog(struct bpf_verifier_log *vlog,
|
|
|
|
const struct bpf_prog *prog);
|
|
|
|
|
2020-11-13 00:59:29 +00:00
|
|
|
bool bpf_lsm_is_sleepable_hook(u32 btf_id);
|
2022-12-03 20:49:54 +00:00
|
|
|
bool bpf_lsm_is_trusted(const struct bpf_prog *prog);
|
2020-11-13 00:59:29 +00:00
|
|
|
|
2020-08-25 18:29:17 +00:00
|
|
|
static inline struct bpf_storage_blob *bpf_inode(
|
|
|
|
const struct inode *inode)
|
|
|
|
{
|
|
|
|
if (unlikely(!inode->i_security))
|
|
|
|
return NULL;
|
|
|
|
|
|
|
|
return inode->i_security + bpf_lsm_blob_sizes.lbs_inode;
|
|
|
|
}
|
|
|
|
|
|
|
|
extern const struct bpf_func_proto bpf_inode_storage_get_proto;
|
|
|
|
extern const struct bpf_func_proto bpf_inode_storage_delete_proto;
|
|
|
|
void bpf_inode_storage_free(struct inode *inode);
|
|
|
|
|
2022-06-28 17:43:06 +00:00
|
|
|
void bpf_lsm_find_cgroup_shim(const struct bpf_prog *prog, bpf_func_t *bpf_func);
|
|
|
|
|
2020-03-29 00:43:52 +00:00
|
|
|
#else /* !CONFIG_BPF_LSM */
|
|
|
|
|
2020-11-13 00:59:29 +00:00
|
|
|
static inline bool bpf_lsm_is_sleepable_hook(u32 btf_id)
|
|
|
|
{
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
2022-12-03 20:49:54 +00:00
|
|
|
static inline bool bpf_lsm_is_trusted(const struct bpf_prog *prog)
|
|
|
|
{
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
2020-03-29 00:43:52 +00:00
|
|
|
static inline int bpf_lsm_verify_prog(struct bpf_verifier_log *vlog,
|
|
|
|
const struct bpf_prog *prog)
|
|
|
|
{
|
|
|
|
return -EOPNOTSUPP;
|
|
|
|
}
|
|
|
|
|
2020-08-25 18:29:17 +00:00
|
|
|
static inline struct bpf_storage_blob *bpf_inode(
|
|
|
|
const struct inode *inode)
|
|
|
|
{
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline void bpf_inode_storage_free(struct inode *inode)
|
|
|
|
{
|
|
|
|
}
|
|
|
|
|
2022-06-28 17:43:06 +00:00
|
|
|
static inline void bpf_lsm_find_cgroup_shim(const struct bpf_prog *prog,
|
|
|
|
bpf_func_t *bpf_func)
|
|
|
|
{
|
|
|
|
}
|
|
|
|
|
2020-03-29 00:43:51 +00:00
|
|
|
#endif /* CONFIG_BPF_LSM */
|
|
|
|
|
|
|
|
#endif /* _LINUX_BPF_LSM_H */
|