u32 seq;
};
+/* Argument struct for netlbl_domhsh_walk() */
+struct netlbl_domhsh_walk_arg {
+ struct netlbl_audit *audit_info;
+ u32 doi;
+};
+
/* NetLabel Generic NETLINK CALIPSO family */
static struct genl_family netlbl_calipso_gnl_family = {
.id = GENL_ID_GENERATE,
return skb->len;
}
+/**
+ * netlbl_calipso_remove_cb - netlbl_calipso_remove() callback for REMOVE
+ * @entry: LSM domain mapping entry
+ * @arg: the netlbl_domhsh_walk_arg structure
+ *
+ * Description:
+ * This function is intended for use by netlbl_calipso_remove() as the callback
+ * for the netlbl_domhsh_walk() function; it removes LSM domain map entries
+ * which are associated with the CALIPSO DOI specified in @arg. Returns zero on
+ * success, negative values on failure.
+ *
+ */
+static int netlbl_calipso_remove_cb(struct netlbl_dom_map *entry, void *arg)
+{
+ struct netlbl_domhsh_walk_arg *cb_arg = arg;
+
+ if (entry->def.type == NETLBL_NLTYPE_CALIPSO &&
+ entry->def.calipso->doi == cb_arg->doi)
+ return netlbl_domhsh_remove_entry(entry, cb_arg->audit_info);
+
+ return 0;
+}
+
+/**
+ * netlbl_calipso_remove - Handle a REMOVE message
+ * @skb: the NETLINK buffer
+ * @info: the Generic NETLINK info block
+ *
+ * Description:
+ * Process a user generated REMOVE message and respond accordingly. Returns
+ * zero on success, negative values on failure.
+ *
+ */
+static int netlbl_calipso_remove(struct sk_buff *skb, struct genl_info *info)
+{
+ int ret_val = -EINVAL;
+ struct netlbl_domhsh_walk_arg cb_arg;
+ struct netlbl_audit audit_info;
+ u32 skip_bkt = 0;
+ u32 skip_chain = 0;
+
+ if (!info->attrs[NLBL_CALIPSO_A_DOI])
+ return -EINVAL;
+
+ netlbl_netlink_auditinfo(skb, &audit_info);
+ cb_arg.doi = nla_get_u32(info->attrs[NLBL_CALIPSO_A_DOI]);
+ cb_arg.audit_info = &audit_info;
+ ret_val = netlbl_domhsh_walk(&skip_bkt, &skip_chain,
+ netlbl_calipso_remove_cb, &cb_arg);
+ if (ret_val == 0 || ret_val == -ENOENT) {
+ ret_val = calipso_doi_remove(cb_arg.doi, &audit_info);
+ if (ret_val == 0)
+ atomic_dec(&netlabel_mgmt_protocount);
+ }
+
+ return ret_val;
+}
+
/* NetLabel Generic NETLINK Command Definitions
*/
.dumpit = NULL,
},
{
+ .cmd = NLBL_CALIPSO_C_REMOVE,
+ .flags = GENL_ADMIN_PERM,
+ .policy = calipso_genl_policy,
+ .doit = netlbl_calipso_remove,
+ .dumpit = NULL,
+ },
+ {
.cmd = NLBL_CALIPSO_C_LIST,
.flags = 0,
.policy = calipso_genl_policy,
ops->doi_free(doi_def);
}
+/**
+ * calipso_doi_remove - Remove an existing DOI from the CALIPSO protocol engine
+ * @doi: the DOI value
+ * @audit_secid: the LSM secid to use in the audit message
+ *
+ * Description:
+ * Removes a DOI definition from the CALIPSO engine. The NetLabel routines will
+ * be called to release their own LSM domain mappings as well as our own
+ * domain list. Returns zero on success and negative values on failure.
+ *
+ */
+int calipso_doi_remove(u32 doi, struct netlbl_audit *audit_info)
+{
+ int ret_val = -ENOMSG;
+ const struct netlbl_calipso_ops *ops = netlbl_calipso_ops_get();
+
+ if (ops)
+ ret_val = ops->doi_remove(doi, audit_info);
+ return ret_val;
+}
+
/**
* calipso_doi_getdef - Returns a reference to a valid DOI definition
* @doi: the DOI value
ret_val = ops->doi_walk(skip_cnt, callback, cb_arg);
return ret_val;
}
+
+/**
+ * calipso_sock_getattr - Get the security attributes from a sock
+ * @sk: the sock
+ * @secattr: the security attributes
+ *
+ * Description:
+ * Query @sk to see if there is a CALIPSO option attached to the sock and if
+ * there is return the CALIPSO security attributes in @secattr. This function
+ * requires that @sk be locked, or privately held, but it does not do any
+ * locking itself. Returns zero on success and negative values on failure.
+ *
+ */
+int calipso_sock_getattr(struct sock *sk, struct netlbl_lsm_secattr *secattr)
+{
+ int ret_val = -ENOMSG;
+ const struct netlbl_calipso_ops *ops = netlbl_calipso_ops_get();
+
+ if (ops)
+ ret_val = ops->sock_getattr(sk, secattr);
+ return ret_val;
+}
+
+/**
+ * calipso_sock_setattr - Add a CALIPSO option to a socket
+ * @sk: the socket
+ * @doi_def: the CALIPSO DOI to use
+ * @secattr: the specific security attributes of the socket
+ *
+ * Description:
+ * Set the CALIPSO option on the given socket using the DOI definition and
+ * security attributes passed to the function. This function requires
+ * exclusive access to @sk, which means it either needs to be in the
+ * process of being created or locked. Returns zero on success and negative
+ * values on failure.
+ *
+ */
+int calipso_sock_setattr(struct sock *sk,
+ const struct calipso_doi *doi_def,
+ const struct netlbl_lsm_secattr *secattr)
+{
+ int ret_val = -ENOMSG;
+ const struct netlbl_calipso_ops *ops = netlbl_calipso_ops_get();
+
+ if (ops)
+ ret_val = ops->sock_setattr(sk, doi_def, secattr);
+ return ret_val;
+}
+
+/**
+ * calipso_sock_delattr - Delete the CALIPSO option from a socket
+ * @sk: the socket
+ *
+ * Description:
+ * Removes the CALIPSO option from a socket, if present.
+ *
+ */
+void calipso_sock_delattr(struct sock *sk)
+{
+ const struct netlbl_calipso_ops *ops = netlbl_calipso_ops_get();
+
+ if (ops)
+ ops->sock_delattr(sk);
+}
+
+/**
+ * calipso_req_setattr - Add a CALIPSO option to a connection request socket
+ * @req: the connection request socket
+ * @doi_def: the CALIPSO DOI to use
+ * @secattr: the specific security attributes of the socket
+ *
+ * Description:
+ * Set the CALIPSO option on the given socket using the DOI definition and
+ * security attributes passed to the function. Returns zero on success and
+ * negative values on failure.
+ *
+ */
+int calipso_req_setattr(struct request_sock *req,
+ const struct calipso_doi *doi_def,
+ const struct netlbl_lsm_secattr *secattr)
+{
+ int ret_val = -ENOMSG;
+ const struct netlbl_calipso_ops *ops = netlbl_calipso_ops_get();
+
+ if (ops)
+ ret_val = ops->req_setattr(req, doi_def, secattr);
+ return ret_val;
+}
+
+/**
+ * calipso_req_delattr - Delete the CALIPSO option from a request socket
+ * @reg: the request socket
+ *
+ * Description:
+ * Removes the CALIPSO option from a request socket, if present.
+ *
+ */
+void calipso_req_delattr(struct request_sock *req)
+{
+ const struct netlbl_calipso_ops *ops = netlbl_calipso_ops_get();
+
+ if (ops)
+ ops->req_delattr(req);
+}
+
+/**
+ * calipso_optptr - Find the CALIPSO option in the packet
+ * @skb: the packet
+ *
+ * Description:
+ * Parse the packet's IP header looking for a CALIPSO option. Returns a pointer
+ * to the start of the CALIPSO option on success, NULL if one if not found.
+ *
+ */
+unsigned char *calipso_optptr(const struct sk_buff *skb)
+{
+ unsigned char *ret_val = NULL;
+ const struct netlbl_calipso_ops *ops = netlbl_calipso_ops_get();
+
+ if (ops)
+ ret_val = ops->skbuff_optptr(skb);
+ return ret_val;
+}
+
+/**
+ * calipso_getattr - Get the security attributes from a memory block.
+ * @calipso: the CALIPSO option
+ * @secattr: the security attributes
+ *
+ * Description:
+ * Inspect @calipso and return the security attributes in @secattr.
+ * Returns zero on success and negative values on failure.
+ *
+ */
+int calipso_getattr(const unsigned char *calipso,
+ struct netlbl_lsm_secattr *secattr)
+{
+ int ret_val = -ENOMSG;
+ const struct netlbl_calipso_ops *ops = netlbl_calipso_ops_get();
+
+ if (ops)
+ ret_val = ops->opt_getattr(calipso, secattr);
+ return ret_val;
+}
+
+/**
+ * calipso_skbuff_setattr - Set the CALIPSO option on a packet
+ * @skb: the packet
+ * @doi_def: the CALIPSO DOI to use
+ * @secattr: the security attributes
+ *
+ * Description:
+ * Set the CALIPSO option on the given packet based on the security attributes.
+ * Returns a pointer to the IP header on success and NULL on failure.
+ *
+ */
+int calipso_skbuff_setattr(struct sk_buff *skb,
+ const struct calipso_doi *doi_def,
+ const struct netlbl_lsm_secattr *secattr)
+{
+ int ret_val = -ENOMSG;
+ const struct netlbl_calipso_ops *ops = netlbl_calipso_ops_get();
+
+ if (ops)
+ ret_val = ops->skbuff_setattr(skb, doi_def, secattr);
+ return ret_val;
+}
+
+/**
+ * calipso_skbuff_delattr - Delete any CALIPSO options from a packet
+ * @skb: the packet
+ *
+ * Description:
+ * Removes any and all CALIPSO options from the given packet. Returns zero on
+ * success, negative values on failure.
+ *
+ */
+int calipso_skbuff_delattr(struct sk_buff *skb)
+{
+ int ret_val = -ENOMSG;
+ const struct netlbl_calipso_ops *ops = netlbl_calipso_ops_get();
+
+ if (ops)
+ ret_val = ops->skbuff_delattr(skb);
+ return ret_val;
+}
+
+/**
+ * calipso_cache_invalidate - Invalidates the current CALIPSO cache
+ *
+ * Description:
+ * Invalidates and frees any entries in the CALIPSO cache. Returns zero on
+ * success and negative values on failure.
+ *
+ */
+void calipso_cache_invalidate(void)
+{
+ const struct netlbl_calipso_ops *ops = netlbl_calipso_ops_get();
+
+ if (ops)
+ ops->cache_invalidate();
+}
+
+/**
+ * calipso_cache_add - Add an entry to the CALIPSO cache
+ * @calipso_ptr: the CALIPSO option
+ * @secattr: the packet's security attributes
+ *
+ * Description:
+ * Add a new entry into the CALIPSO label mapping cache.
+ * Returns zero on success, negative values on failure.
+ *
+ */
+int calipso_cache_add(const unsigned char *calipso_ptr,
+ const struct netlbl_lsm_secattr *secattr)
+
+{
+ int ret_val = -ENOMSG;
+ const struct netlbl_calipso_ops *ops = netlbl_calipso_ops_get();
+
+ if (ops)
+ ret_val = ops->cache_add(calipso_ptr, secattr);
+ return ret_val;
+}
projects / deliverable / linux.git / blobdiff