[PATCH RFC 1/8] certs: Introduce ability to link to a system key

[Eric Snowberg]

> On Apr 4, 2024, at 4:40 PM, Mimi Zohar <zohar at linux.ibm.com> wrote:
> 
> Hi Eric,
> 
>> diff --git a/certs/system_keyring.c b/certs/system_keyring.c
>> index 9de610bf1f4b..b647be49f6e0 100644
>> --- a/certs/system_keyring.c
>> +++ b/certs/system_keyring.c
>> @@ -426,3 +426,32 @@ void __init set_platform_trusted_keys(struct key
>> *keyring)
>> platform_trusted_keys = keyring;
>> }
>> #endif
>> +
>> +/**
>> + * system_key_link - Link to a system key
>> + * @keyring: The keyring to link into
>> + * @id: The asymmetric key id to look for in the system keyring
>> + */
>> +int system_key_link(struct key *keyring, struct asymmetric_key_id *id)
>> +{
>> + struct key *tkey;
>> +
>> +#ifdef CONFIG_SECONDARY_TRUSTED_KEYRING
>> + tkey = find_asymmetric_key(secondary_trusted_keys, id, NULL, NULL,
>> false);
>> +#else
>> + tkey = find_asymmetric_key(builtin_trusted_keys, id, NULL, NULL, false);
>> +#endif
>> + if (!IS_ERR(tkey))
>> + goto found;
>> +
>> + tkey = find_asymmetric_key(platform_trusted_keys, id, NULL, NULL,
>> false);
>> +
>> + if (!IS_ERR(tkey))
>> + goto found;
>> +
>> + return -1;
> 
> Normally "goto" is for the error.  Invert the logic. 

Ok, I'll change that in the next version.  Thanks.