diff --git a/crypto/asymmetric_keys/asymmetric_type.c b/crypto/asymmetric_keys/asymmetric_type.c index 9d78ad7754d9aa..7c04989689757d 100644 --- a/crypto/asymmetric_keys/asymmetric_type.c +++ b/crypto/asymmetric_keys/asymmetric_type.c @@ -59,8 +59,8 @@ EXPORT_SYMBOL_GPL(asymmetric_keyid_match); * "id:" - request a key matching the ID * ":" - request a key of a subtype */ -static int asymmetric_key_match(const struct key *key, - const struct key_match_data *match_data) +static int asymmetric_key_cmp(const struct key *key, + const struct key_match_data *match_data) { const struct asymmetric_key_subtype *subtype = asymmetric_key_subtype(key); const char *description = match_data->raw_data; @@ -110,6 +110,7 @@ static int asymmetric_key_match(const struct key *key, static int asymmetric_key_match_preparse(struct key_match_data *match_data) { match_data->lookup_type = KEYRING_SEARCH_LOOKUP_ITERATE; + match_data->cmp = asymmetric_key_cmp; return 0; } @@ -224,7 +225,6 @@ struct key_type key_type_asymmetric = { .free_preparse = asymmetric_key_free_preparse, .instantiate = generic_key_instantiate, .match_preparse = asymmetric_key_match_preparse, - .match = asymmetric_key_match, .match_free = asymmetric_key_match_free, .destroy = asymmetric_key_destroy, .describe = asymmetric_key_describe, diff --git a/crypto/asymmetric_keys/pkcs7_key_type.c b/crypto/asymmetric_keys/pkcs7_key_type.c index d1faa1df1decdd..751f8fd7335db2 100644 --- a/crypto/asymmetric_keys/pkcs7_key_type.c +++ b/crypto/asymmetric_keys/pkcs7_key_type.c @@ -75,7 +75,6 @@ static struct key_type key_type_pkcs7 = { .preparse = pkcs7_preparse, .free_preparse = user_free_preparse, .instantiate = generic_key_instantiate, - .match = user_match, .revoke = user_revoke, .destroy = user_destroy, .describe = user_describe, diff --git a/fs/cifs/cifs_spnego.c b/fs/cifs/cifs_spnego.c index a3e932547617ea..f4cf200b3c7671 100644 --- a/fs/cifs/cifs_spnego.c +++ b/fs/cifs/cifs_spnego.c @@ -62,7 +62,6 @@ cifs_spnego_key_destroy(struct key *key) struct key_type cifs_spnego_key_type = { .name = "cifs.spnego", .instantiate = cifs_spnego_key_instantiate, - .match = user_match, .destroy = cifs_spnego_key_destroy, .describe = user_describe, }; diff --git a/fs/cifs/cifsacl.c b/fs/cifs/cifsacl.c index 7ff866dbb89eb7..6d00c419cbae0b 100644 --- a/fs/cifs/cifsacl.c +++ b/fs/cifs/cifsacl.c @@ -84,7 +84,6 @@ static struct key_type cifs_idmap_key_type = { .instantiate = cifs_idmap_key_instantiate, .destroy = cifs_idmap_key_destroy, .describe = user_describe, - .match = user_match, }; static char * diff --git a/fs/nfs/idmap.c b/fs/nfs/idmap.c index 7dd55b745c4d96..2f5db844c17253 100644 --- a/fs/nfs/idmap.c +++ b/fs/nfs/idmap.c @@ -177,7 +177,6 @@ static struct key_type key_type_id_resolver = { .preparse = user_preparse, .free_preparse = user_free_preparse, .instantiate = generic_key_instantiate, - .match = user_match, .revoke = user_revoke, .destroy = user_destroy, .describe = user_describe, @@ -401,7 +400,6 @@ static struct key_type key_type_id_resolver_legacy = { .preparse = user_preparse, .free_preparse = user_free_preparse, .instantiate = generic_key_instantiate, - .match = user_match, .revoke = user_revoke, .destroy = user_destroy, .describe = user_describe, diff --git a/include/keys/user-type.h b/include/keys/user-type.h index 66d92af30e7c0e..cebefb069c44a5 100644 --- a/include/keys/user-type.h +++ b/include/keys/user-type.h @@ -36,13 +36,10 @@ extern struct key_type key_type_user; extern struct key_type key_type_logon; struct key_preparsed_payload; -struct key_match_data; extern int user_preparse(struct key_preparsed_payload *prep); extern void user_free_preparse(struct key_preparsed_payload *prep); extern int user_update(struct key *key, struct key_preparsed_payload *prep); -extern int user_match(const struct key *key, - const struct key_match_data *match_data); extern void user_revoke(struct key *key); extern void user_destroy(struct key *key); extern void user_describe(const struct key *user, struct seq_file *m); diff --git a/include/linux/key-type.h b/include/linux/key-type.h index bf93ea60927387..c14816bd3b44f1 100644 --- a/include/linux/key-type.h +++ b/include/linux/key-type.h @@ -113,10 +113,6 @@ struct key_type { */ int (*match_preparse)(struct key_match_data *match_data); - /* match a key against a description */ - int (*match)(const struct key *key, - const struct key_match_data *match_data); - /* Free preparsed match data (optional). This should be supplied it * ->match_preparse() is supplied. */ void (*match_free)(struct key_match_data *match_data); diff --git a/net/ceph/crypto.c b/net/ceph/crypto.c index ffeba8f9dda929..62fc5e7a9acf75 100644 --- a/net/ceph/crypto.c +++ b/net/ceph/crypto.c @@ -476,7 +476,6 @@ struct key_type key_type_ceph = { .preparse = ceph_key_preparse, .free_preparse = ceph_key_free_preparse, .instantiate = generic_key_instantiate, - .match = user_match, .destroy = ceph_key_destroy, }; diff --git a/net/dns_resolver/dns_key.c b/net/dns_resolver/dns_key.c index 92df6e508ae7d0..a07b9ba7e0b7bf 100644 --- a/net/dns_resolver/dns_key.c +++ b/net/dns_resolver/dns_key.c @@ -176,9 +176,8 @@ static void dns_resolver_free_preparse(struct key_preparsed_payload *prep) * The domain name may be a simple name or an absolute domain name (which * should end with a period). The domain name is case-independent. */ -static int -dns_resolver_match(const struct key *key, - const struct key_match_data *match_data) +static int dns_resolver_cmp(const struct key *key, + const struct key_match_data *match_data) { int slen, dlen, ret = 0; const char *src = key->description, *dsp = match_data->raw_data; @@ -209,6 +208,16 @@ dns_resolver_match(const struct key *key, return ret; } +/* + * Preparse the match criterion. + */ +static int dns_resolver_match_preparse(struct key_match_data *match_data) +{ + match_data->lookup_type = KEYRING_SEARCH_LOOKUP_ITERATE; + match_data->cmp = dns_resolver_cmp; + return 0; +} + /* * Describe a DNS key */ @@ -243,7 +252,7 @@ struct key_type key_type_dns_resolver = { .preparse = dns_resolver_preparse, .free_preparse = dns_resolver_free_preparse, .instantiate = generic_key_instantiate, - .match = dns_resolver_match, + .match_preparse = dns_resolver_match_preparse, .revoke = user_revoke, .destroy = user_destroy, .describe = dns_resolver_describe, diff --git a/net/rxrpc/ar-key.c b/net/rxrpc/ar-key.c index 3907add75932d9..10c6cb694b4343 100644 --- a/net/rxrpc/ar-key.c +++ b/net/rxrpc/ar-key.c @@ -44,7 +44,6 @@ struct key_type key_type_rxrpc = { .preparse = rxrpc_preparse, .free_preparse = rxrpc_free_preparse, .instantiate = generic_key_instantiate, - .match = user_match, .destroy = rxrpc_destroy, .describe = rxrpc_describe, .read = rxrpc_read, @@ -61,7 +60,6 @@ struct key_type key_type_rxrpc_s = { .preparse = rxrpc_preparse_s, .free_preparse = rxrpc_free_preparse_s, .instantiate = generic_key_instantiate, - .match = user_match, .destroy = rxrpc_destroy_s, .describe = rxrpc_describe, }; diff --git a/security/keys/big_key.c b/security/keys/big_key.c index 4045c13a761a9f..b6adb94f6d5257 100644 --- a/security/keys/big_key.c +++ b/security/keys/big_key.c @@ -36,7 +36,6 @@ struct key_type key_type_big_key = { .preparse = big_key_preparse, .free_preparse = big_key_free_preparse, .instantiate = generic_key_instantiate, - .match = user_match, .revoke = big_key_revoke, .destroy = big_key_destroy, .describe = big_key_describe, diff --git a/security/keys/encrypted-keys/encrypted.c b/security/keys/encrypted-keys/encrypted.c index 5fe443d120afe8..db9675db102620 100644 --- a/security/keys/encrypted-keys/encrypted.c +++ b/security/keys/encrypted-keys/encrypted.c @@ -970,7 +970,6 @@ struct key_type key_type_encrypted = { .name = "encrypted", .instantiate = encrypted_instantiate, .update = encrypted_update, - .match = user_match, .destroy = encrypted_destroy, .describe = user_describe, .read = encrypted_read, diff --git a/security/keys/internal.h b/security/keys/internal.h index b47cc532be1e3b..e66a16cb63e1ca 100644 --- a/security/keys/internal.h +++ b/security/keys/internal.h @@ -127,6 +127,8 @@ struct keyring_search_context { struct timespec now; }; +extern int key_default_cmp(const struct key *key, + const struct key_match_data *match_data); extern key_ref_t keyring_search_aux(key_ref_t keyring_ref, struct keyring_search_context *ctx); diff --git a/security/keys/key.c b/security/keys/key.c index b90a68c4e2c427..8c0092ca04430b 100644 --- a/security/keys/key.c +++ b/security/keys/key.c @@ -799,7 +799,7 @@ key_ref_t key_create_or_update(key_ref_t keyring_ref, } key_ref = ERR_PTR(-EINVAL); - if (!index_key.type->match || !index_key.type->instantiate || + if (!index_key.type->instantiate || (!index_key.description && !index_key.type->preparse)) goto error_put_type; diff --git a/security/keys/keyring.c b/security/keys/keyring.c index 10f0a5f2d3620c..253c9a0eb092e2 100644 --- a/security/keys/keyring.c +++ b/security/keys/keyring.c @@ -89,7 +89,6 @@ struct key_type key_type_keyring = { .preparse = keyring_preparse, .free_preparse = keyring_free_preparse, .instantiate = keyring_instantiate, - .match = user_match, .revoke = keyring_revoke, .destroy = keyring_destroy, .describe = keyring_describe, @@ -511,6 +510,15 @@ struct key *keyring_alloc(const char *description, kuid_t uid, kgid_t gid, } EXPORT_SYMBOL(keyring_alloc); +/* + * By default, we keys found by getting an exact match on their descriptions. + */ +int key_default_cmp(const struct key *key, + const struct key_match_data *match_data) +{ + return strcmp(key->description, match_data->raw_data) == 0; +} + /* * Iteration function to consider each key found. */ @@ -884,7 +892,7 @@ key_ref_t keyring_search(key_ref_t keyring, .index_key.type = type, .index_key.description = description, .cred = current_cred(), - .match_data.cmp = type->match, + .match_data.cmp = key_default_cmp, .match_data.raw_data = description, .match_data.lookup_type = KEYRING_SEARCH_LOOKUP_DIRECT, .flags = KEYRING_SEARCH_DO_STATE_CHECK, @@ -892,9 +900,6 @@ key_ref_t keyring_search(key_ref_t keyring, key_ref_t key; int ret; - if (!ctx.match_data.cmp) - return ERR_PTR(-ENOKEY); - if (type->match_preparse) { ret = type->match_preparse(&ctx.match_data); if (ret < 0) diff --git a/security/keys/request_key.c b/security/keys/request_key.c index 408523e5e2e2ee..dc6ed32b7844cf 100644 --- a/security/keys/request_key.c +++ b/security/keys/request_key.c @@ -531,7 +531,7 @@ struct key *request_key_and_link(struct key_type *type, .index_key.type = type, .index_key.description = description, .cred = current_cred(), - .match_data.cmp = type->match, + .match_data.cmp = key_default_cmp, .match_data.raw_data = description, .match_data.lookup_type = KEYRING_SEARCH_LOOKUP_DIRECT, }; diff --git a/security/keys/request_key_auth.c b/security/keys/request_key_auth.c index 9ae02819cc064f..6639e2cb885322 100644 --- a/security/keys/request_key_auth.c +++ b/security/keys/request_key_auth.c @@ -246,7 +246,7 @@ struct key *key_get_instantiation_authkey(key_serial_t target_id) .index_key.type = &key_type_request_key_auth, .index_key.description = description, .cred = current_cred(), - .match_data.cmp = user_match, + .match_data.cmp = key_default_cmp, .match_data.raw_data = description, .match_data.lookup_type = KEYRING_SEARCH_LOOKUP_DIRECT, }; diff --git a/security/keys/trusted.c b/security/keys/trusted.c index 6b804aa4529a17..c0594cb07adab1 100644 --- a/security/keys/trusted.c +++ b/security/keys/trusted.c @@ -1096,7 +1096,6 @@ struct key_type key_type_trusted = { .name = "trusted", .instantiate = trusted_instantiate, .update = trusted_update, - .match = user_match, .destroy = trusted_destroy, .describe = user_describe, .read = trusted_read, diff --git a/security/keys/user_defined.c b/security/keys/user_defined.c index cd7e726e8646a7..36b47bbd3d8cc2 100644 --- a/security/keys/user_defined.c +++ b/security/keys/user_defined.c @@ -30,7 +30,6 @@ struct key_type key_type_user = { .free_preparse = user_free_preparse, .instantiate = generic_key_instantiate, .update = user_update, - .match = user_match, .revoke = user_revoke, .destroy = user_destroy, .describe = user_describe, @@ -51,7 +50,6 @@ struct key_type key_type_logon = { .free_preparse = user_free_preparse, .instantiate = generic_key_instantiate, .update = user_update, - .match = user_match, .revoke = user_revoke, .destroy = user_destroy, .describe = user_describe, @@ -136,16 +134,6 @@ int user_update(struct key *key, struct key_preparsed_payload *prep) EXPORT_SYMBOL_GPL(user_update); -/* - * match users on their name - */ -int user_match(const struct key *key, const struct key_match_data *match_data) -{ - return strcmp(key->description, match_data->raw_data) == 0; -} - -EXPORT_SYMBOL_GPL(user_match); - /* * dispose of the links from a revoked keyring * - called with the key sem write-locked