Messages in this thread | | | From | Song Liu <> | Date | Thu, 25 Aug 2022 22:56:45 -0700 | Subject | Re: [PATCH v13 05/10] bpf: Add bpf_lookup_*_key() and bpf_key_put() kfuncs |
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On Tue, Aug 23, 2022 at 8:02 AM Roberto Sassu <roberto.sassu@huaweicloud.com> wrote: > > From: Roberto Sassu <roberto.sassu@huawei.com> > > Add the bpf_lookup_user_key(), bpf_lookup_system_key() and bpf_key_put() > kfuncs, to respectively search a key with a given key handle serial number > and flags, obtain a key from a pre-determined ID defined in > include/linux/verification.h, and cleanup. > > Introduce system_keyring_id_check() to validate the keyring ID parameter of > bpf_lookup_system_key(). > > Signed-off-by: Roberto Sassu <roberto.sassu@huawei.com> > --- > include/linux/bpf.h | 6 ++ > include/linux/verification.h | 8 +++ > kernel/trace/bpf_trace.c | 135 +++++++++++++++++++++++++++++++++++ > 3 files changed, 149 insertions(+) > > diff --git a/include/linux/bpf.h b/include/linux/bpf.h > index 6041304b402e..991da09a5858 100644 > --- a/include/linux/bpf.h > +++ b/include/linux/bpf.h > @@ -2586,4 +2586,10 @@ static inline void bpf_cgroup_atype_get(u32 attach_btf_id, int cgroup_atype) {} > static inline void bpf_cgroup_atype_put(int cgroup_atype) {} > #endif /* CONFIG_BPF_LSM */ > > +#ifdef CONFIG_KEYS
Do we need to declare struct key here?
> +struct bpf_key { > + struct key *key; > + bool has_ref; > +}; > +#endif /* CONFIG_KEYS */ > #endif /* _LINUX_BPF_H */ >
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