[PATCH net-next 06/17] rxrpc: Split the server key type (rxrpc_s) into its own file
David Howells
dhowells at redhat.com
Mon Nov 23 15:10:46 EST 2020
Split the server private key type (rxrpc_s) out into its own file rather
than mingling it with the authentication/client key type (rxrpc) since they
don't really bear any relation.
Signed-off-by: David Howells <dhowells at redhat.com>
---
net/rxrpc/Makefile | 1
net/rxrpc/ar-internal.h | 9 ++-
net/rxrpc/key.c | 125 ------------------------------------------
net/rxrpc/server_key.c | 141 +++++++++++++++++++++++++++++++++++++++++++++++
4 files changed, 149 insertions(+), 127 deletions(-)
create mode 100644 net/rxrpc/server_key.c
diff --git a/net/rxrpc/Makefile b/net/rxrpc/Makefile
index ddd0f95713a9..b11281bed2a4 100644
--- a/net/rxrpc/Makefile
+++ b/net/rxrpc/Makefile
@@ -28,6 +28,7 @@ rxrpc-y := \
rtt.o \
security.o \
sendmsg.o \
+ server_key.o \
skbuff.o \
utils.o
diff --git a/net/rxrpc/ar-internal.h b/net/rxrpc/ar-internal.h
index db6e754743fb..6427bcfb4df5 100644
--- a/net/rxrpc/ar-internal.h
+++ b/net/rxrpc/ar-internal.h
@@ -906,10 +906,8 @@ extern const struct rxrpc_security rxrpc_no_security;
* key.c
*/
extern struct key_type key_type_rxrpc;
-extern struct key_type key_type_rxrpc_s;
int rxrpc_request_key(struct rxrpc_sock *, sockptr_t , int);
-int rxrpc_server_keyring(struct rxrpc_sock *, sockptr_t, int);
int rxrpc_get_server_data_key(struct rxrpc_connection *, const void *, time64_t,
u32);
@@ -1064,6 +1062,13 @@ struct key *rxrpc_look_up_server_security(struct rxrpc_connection *,
*/
int rxrpc_do_sendmsg(struct rxrpc_sock *, struct msghdr *, size_t);
+/*
+ * server_key.c
+ */
+extern struct key_type key_type_rxrpc_s;
+
+int rxrpc_server_keyring(struct rxrpc_sock *, sockptr_t, int);
+
/*
* skbuff.c
*/
diff --git a/net/rxrpc/key.c b/net/rxrpc/key.c
index 197b4cf46b64..3bd7b9d48d27 100644
--- a/net/rxrpc/key.c
+++ b/net/rxrpc/key.c
@@ -23,15 +23,10 @@
#include <keys/user-type.h>
#include "ar-internal.h"
-static int rxrpc_vet_description_s(const char *);
static int rxrpc_preparse(struct key_preparsed_payload *);
-static int rxrpc_preparse_s(struct key_preparsed_payload *);
static void rxrpc_free_preparse(struct key_preparsed_payload *);
-static void rxrpc_free_preparse_s(struct key_preparsed_payload *);
static void rxrpc_destroy(struct key *);
-static void rxrpc_destroy_s(struct key *);
static void rxrpc_describe(const struct key *, struct seq_file *);
-static void rxrpc_describe_s(const struct key *, struct seq_file *);
static long rxrpc_read(const struct key *, char *, size_t);
/*
@@ -50,38 +45,6 @@ struct key_type key_type_rxrpc = {
};
EXPORT_SYMBOL(key_type_rxrpc);
-/*
- * rxrpc server defined keys take "<serviceId>:<securityIndex>" as the
- * description and an 8-byte decryption key as the payload
- */
-struct key_type key_type_rxrpc_s = {
- .name = "rxrpc_s",
- .flags = KEY_TYPE_NET_DOMAIN,
- .vet_description = rxrpc_vet_description_s,
- .preparse = rxrpc_preparse_s,
- .free_preparse = rxrpc_free_preparse_s,
- .instantiate = generic_key_instantiate,
- .destroy = rxrpc_destroy_s,
- .describe = rxrpc_describe_s,
-};
-
-/*
- * Vet the description for an RxRPC server key
- */
-static int rxrpc_vet_description_s(const char *desc)
-{
- unsigned long num;
- char *p;
-
- num = simple_strtoul(desc, &p, 10);
- if (*p != ':' || num > 65535)
- return -EINVAL;
- num = simple_strtoul(p + 1, &p, 10);
- if (*p || num < 1 || num > 255)
- return -EINVAL;
- return 0;
-}
-
/*
* parse an RxKAD type XDR format token
* - the caller guarantees we have at least 4 words
@@ -433,45 +396,6 @@ static void rxrpc_free_preparse(struct key_preparsed_payload *prep)
rxrpc_free_token_list(prep->payload.data[0]);
}
-/*
- * Preparse a server secret key.
- *
- * The data should be the 8-byte secret key.
- */
-static int rxrpc_preparse_s(struct key_preparsed_payload *prep)
-{
- struct crypto_skcipher *ci;
-
- _enter("%zu", prep->datalen);
-
- if (prep->datalen != 8)
- return -EINVAL;
-
- memcpy(&prep->payload.data[2], prep->data, 8);
-
- ci = crypto_alloc_skcipher("pcbc(des)", 0, CRYPTO_ALG_ASYNC);
- if (IS_ERR(ci)) {
- _leave(" = %ld", PTR_ERR(ci));
- return PTR_ERR(ci);
- }
-
- if (crypto_skcipher_setkey(ci, prep->data, 8) < 0)
- BUG();
-
- prep->payload.data[0] = ci;
- _leave(" = 0");
- return 0;
-}
-
-/*
- * Clean up preparse data.
- */
-static void rxrpc_free_preparse_s(struct key_preparsed_payload *prep)
-{
- if (prep->payload.data[0])
- crypto_free_skcipher(prep->payload.data[0]);
-}
-
/*
* dispose of the data dangling from the corpse of a rxrpc key
*/
@@ -480,17 +404,6 @@ static void rxrpc_destroy(struct key *key)
rxrpc_free_token_list(key->payload.data[0]);
}
-/*
- * dispose of the data dangling from the corpse of a rxrpc key
- */
-static void rxrpc_destroy_s(struct key *key)
-{
- if (key->payload.data[0]) {
- crypto_free_skcipher(key->payload.data[0]);
- key->payload.data[0] = NULL;
- }
-}
-
/*
* describe the rxrpc key
*/
@@ -517,14 +430,6 @@ static void rxrpc_describe(const struct key *key, struct seq_file *m)
}
}
-/*
- * describe the rxrpc server key
- */
-static void rxrpc_describe_s(const struct key *key, struct seq_file *m)
-{
- seq_puts(m, key->description);
-}
-
/*
* grab the security key for a socket
*/
@@ -555,36 +460,6 @@ int rxrpc_request_key(struct rxrpc_sock *rx, sockptr_t optval, int optlen)
return 0;
}
-/*
- * grab the security keyring for a server socket
- */
-int rxrpc_server_keyring(struct rxrpc_sock *rx, sockptr_t optval, int optlen)
-{
- struct key *key;
- char *description;
-
- _enter("");
-
- if (optlen <= 0 || optlen > PAGE_SIZE - 1)
- return -EINVAL;
-
- description = memdup_sockptr_nul(optval, optlen);
- if (IS_ERR(description))
- return PTR_ERR(description);
-
- key = request_key(&key_type_keyring, description, NULL);
- if (IS_ERR(key)) {
- kfree(description);
- _leave(" = %ld", PTR_ERR(key));
- return PTR_ERR(key);
- }
-
- rx->securities = key;
- kfree(description);
- _leave(" = 0 [key %x]", key->serial);
- return 0;
-}
-
/*
* generate a server data key
*/
diff --git a/net/rxrpc/server_key.c b/net/rxrpc/server_key.c
new file mode 100644
index 000000000000..b75bda05120d
--- /dev/null
+++ b/net/rxrpc/server_key.c
@@ -0,0 +1,141 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/* RxRPC key management
+ *
+ * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells at redhat.com)
+ *
+ * RxRPC keys should have a description of describing their purpose:
+ * "afs at CAMBRIDGE.REDHAT.COM>
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <crypto/skcipher.h>
+#include <linux/module.h>
+#include <linux/net.h>
+#include <linux/skbuff.h>
+#include <linux/key-type.h>
+#include <linux/ctype.h>
+#include <linux/slab.h>
+#include <net/sock.h>
+#include <net/af_rxrpc.h>
+#include <keys/rxrpc-type.h>
+#include <keys/user-type.h>
+#include "ar-internal.h"
+
+static int rxrpc_vet_description_s(const char *);
+static int rxrpc_preparse_s(struct key_preparsed_payload *);
+static void rxrpc_free_preparse_s(struct key_preparsed_payload *);
+static void rxrpc_destroy_s(struct key *);
+static void rxrpc_describe_s(const struct key *, struct seq_file *);
+
+/*
+ * rxrpc server defined keys take "<serviceId>:<securityIndex>" as the
+ * description and an 8-byte decryption key as the payload
+ */
+struct key_type key_type_rxrpc_s = {
+ .name = "rxrpc_s",
+ .flags = KEY_TYPE_NET_DOMAIN,
+ .vet_description = rxrpc_vet_description_s,
+ .preparse = rxrpc_preparse_s,
+ .free_preparse = rxrpc_free_preparse_s,
+ .instantiate = generic_key_instantiate,
+ .destroy = rxrpc_destroy_s,
+ .describe = rxrpc_describe_s,
+};
+
+/*
+ * Vet the description for an RxRPC server key
+ */
+static int rxrpc_vet_description_s(const char *desc)
+{
+ unsigned long num;
+ char *p;
+
+ num = simple_strtoul(desc, &p, 10);
+ if (*p != ':' || num > 65535)
+ return -EINVAL;
+ num = simple_strtoul(p + 1, &p, 10);
+ if (*p || num < 1 || num > 255)
+ return -EINVAL;
+ return 0;
+}
+
+/*
+ * Preparse a server secret key.
+ *
+ * The data should be the 8-byte secret key.
+ */
+static int rxrpc_preparse_s(struct key_preparsed_payload *prep)
+{
+ struct crypto_skcipher *ci;
+
+ _enter("%zu", prep->datalen);
+
+ if (prep->datalen != 8)
+ return -EINVAL;
+
+ memcpy(&prep->payload.data[2], prep->data, 8);
+
+ ci = crypto_alloc_skcipher("pcbc(des)", 0, CRYPTO_ALG_ASYNC);
+ if (IS_ERR(ci)) {
+ _leave(" = %ld", PTR_ERR(ci));
+ return PTR_ERR(ci);
+ }
+
+ if (crypto_skcipher_setkey(ci, prep->data, 8) < 0)
+ BUG();
+
+ prep->payload.data[0] = ci;
+ _leave(" = 0");
+ return 0;
+}
+
+static void rxrpc_free_preparse_s(struct key_preparsed_payload *prep)
+{
+ if (prep->payload.data[0])
+ crypto_free_skcipher(prep->payload.data[0]);
+}
+
+static void rxrpc_destroy_s(struct key *key)
+{
+ if (key->payload.data[0]) {
+ crypto_free_skcipher(key->payload.data[0]);
+ key->payload.data[0] = NULL;
+ }
+}
+
+static void rxrpc_describe_s(const struct key *key, struct seq_file *m)
+{
+ seq_puts(m, key->description);
+}
+
+/*
+ * grab the security keyring for a server socket
+ */
+int rxrpc_server_keyring(struct rxrpc_sock *rx, sockptr_t optval, int optlen)
+{
+ struct key *key;
+ char *description;
+
+ _enter("");
+
+ if (optlen <= 0 || optlen > PAGE_SIZE - 1)
+ return -EINVAL;
+
+ description = memdup_sockptr_nul(optval, optlen);
+ if (IS_ERR(description))
+ return PTR_ERR(description);
+
+ key = request_key(&key_type_keyring, description, NULL);
+ if (IS_ERR(key)) {
+ kfree(description);
+ _leave(" = %ld", PTR_ERR(key));
+ return PTR_ERR(key);
+ }
+
+ rx->securities = key;
+ kfree(description);
+ _leave(" = 0 [key %x]", key->serial);
+ return 0;
+}
More information about the linux-afs
mailing list