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KEYS: Preparse match data

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Preparse the match data.  This provides several advantages:

 (1) The preparser can reject invalid criteria up front.

 (2) The preparser can convert the criteria to binary data if necessary (the
     asymmetric key type really wants to do binary comparison of the key IDs).

 (3) The preparser can set the type of search to be performed.  This means
     that it's not then a one-off setting in the key type.

 (4) The preparser can set an appropriate comparator function.

Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
This commit is contained in:
David Howells
2014-09-16 17:36:02 +01:00
parent 53d91c5ce0
commit 462919591a
11 changed files with 129 additions and 51 deletions
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net/dns_resolver/dns_key.c
+3 -2
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@@ -177,10 +177,11 @@ static void dns_resolver_free_preparse(struct key_preparsed_payload *prep)
* should end with a period). The domain name is case-independent.
*/
static int
dns_resolver_match(const struct key *key, const void *description)
dns_resolver_match(const struct key *key,
const struct key_match_data *match_data)
{
int slen, dlen, ret = 0;
const char *src = key->description, *dsp = description;
const char *src = key->description, *dsp = match_data->raw_data;
kenter("%s,%s", src, dsp);