Re: [PATCH v17 06/12] bpf: Add bpf_lookup_*_key() and bpf_key_put() kfuncs

On Fri, Sep 9, 2022 at 1:09 PM 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 Acked-by: Kumar Kartikeya Dwivedi memxor@gmail.com

Acked-by: Song Liu song@kernel.org

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