netlabel: Implement CALIPSO config functions for SMACK.
SMACK uses similar functions to control CIPSO, these are
the equivalent functions for CALIPSO and follow exactly
the same semantics.
int netlbl_cfg_calipso_add(struct calipso_doi *doi_def,
struct netlbl_audit *audit_info)
Adds a CALIPSO doi.
void netlbl_cfg_calipso_del(u32 doi, struct netlbl_audit *audit_info)
Removes a CALIPSO doi.
int netlbl_cfg_calipso_map_add(u32 doi, const char *domain,
const struct in6_addr *addr,
const struct in6_addr *mask,
struct netlbl_audit *audit_info)
Creates a mapping between a domain and a CALIPSO doi. If
addr and mask are non-NULL this creates an address-selector
type mapping.
This also extends netlbl_cfg_map_del() to remove IPv6 address-selector
mappings.
Signed-off-by: Huw Davies <huw@codeweavers.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
diff --git a/net/netlabel/netlabel_kapi.c b/net/netlabel/netlabel_kapi.c
index fbad718..28c56b9 100644
--- a/net/netlabel/netlabel_kapi.c
+++ b/net/netlabel/netlabel_kapi.c
@@ -80,6 +80,11 @@
case AF_INET:
return netlbl_domhsh_remove_af4(domain, addr, mask,
audit_info);
+#if IS_ENABLED(CONFIG_IPV6)
+ case AF_INET6:
+ return netlbl_domhsh_remove_af6(domain, addr, mask,
+ audit_info);
+#endif /* IPv6 */
default:
return -EPFNOSUPPORT;
}
@@ -403,6 +408,139 @@
return ret_val;
}
+/**
+ * netlbl_cfg_calipso_add - Add a new CALIPSO DOI definition
+ * @doi_def: CALIPSO DOI definition
+ * @audit_info: NetLabel audit information
+ *
+ * Description:
+ * Add a new CALIPSO DOI definition as defined by @doi_def. Returns zero on
+ * success and negative values on failure.
+ *
+ */
+int netlbl_cfg_calipso_add(struct calipso_doi *doi_def,
+ struct netlbl_audit *audit_info)
+{
+#if IS_ENABLED(CONFIG_IPV6)
+ return calipso_doi_add(doi_def, audit_info);
+#else /* IPv6 */
+ return -ENOSYS;
+#endif /* IPv6 */
+}
+
+/**
+ * netlbl_cfg_calipso_del - Remove an existing CALIPSO DOI definition
+ * @doi: CALIPSO DOI
+ * @audit_info: NetLabel audit information
+ *
+ * Description:
+ * Remove an existing CALIPSO DOI definition matching @doi. Returns zero on
+ * success and negative values on failure.
+ *
+ */
+void netlbl_cfg_calipso_del(u32 doi, struct netlbl_audit *audit_info)
+{
+#if IS_ENABLED(CONFIG_IPV6)
+ calipso_doi_remove(doi, audit_info);
+#endif /* IPv6 */
+}
+
+/**
+ * netlbl_cfg_calipso_map_add - Add a new CALIPSO DOI mapping
+ * @doi: the CALIPSO DOI
+ * @domain: the domain mapping to add
+ * @addr: IP address
+ * @mask: IP address mask
+ * @audit_info: NetLabel audit information
+ *
+ * Description:
+ * Add a new NetLabel/LSM domain mapping for the given CALIPSO DOI to the
+ * NetLabel subsystem. A @domain value of NULL adds a new default domain
+ * mapping. Returns zero on success, negative values on failure.
+ *
+ */
+int netlbl_cfg_calipso_map_add(u32 doi,
+ const char *domain,
+ const struct in6_addr *addr,
+ const struct in6_addr *mask,
+ struct netlbl_audit *audit_info)
+{
+#if IS_ENABLED(CONFIG_IPV6)
+ int ret_val = -ENOMEM;
+ struct calipso_doi *doi_def;
+ struct netlbl_dom_map *entry;
+ struct netlbl_domaddr_map *addrmap = NULL;
+ struct netlbl_domaddr6_map *addrinfo = NULL;
+
+ doi_def = calipso_doi_getdef(doi);
+ if (doi_def == NULL)
+ return -ENOENT;
+
+ entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
+ if (entry == NULL)
+ goto out_entry;
+ entry->family = AF_INET6;
+ if (domain != NULL) {
+ entry->domain = kstrdup(domain, GFP_ATOMIC);
+ if (entry->domain == NULL)
+ goto out_domain;
+ }
+
+ if (addr == NULL && mask == NULL) {
+ entry->def.calipso = doi_def;
+ entry->def.type = NETLBL_NLTYPE_CALIPSO;
+ } else if (addr != NULL && mask != NULL) {
+ addrmap = kzalloc(sizeof(*addrmap), GFP_ATOMIC);
+ if (addrmap == NULL)
+ goto out_addrmap;
+ INIT_LIST_HEAD(&addrmap->list4);
+ INIT_LIST_HEAD(&addrmap->list6);
+
+ addrinfo = kzalloc(sizeof(*addrinfo), GFP_ATOMIC);
+ if (addrinfo == NULL)
+ goto out_addrinfo;
+ addrinfo->def.calipso = doi_def;
+ addrinfo->def.type = NETLBL_NLTYPE_CALIPSO;
+ addrinfo->list.addr = *addr;
+ addrinfo->list.addr.s6_addr32[0] &= mask->s6_addr32[0];
+ addrinfo->list.addr.s6_addr32[1] &= mask->s6_addr32[1];
+ addrinfo->list.addr.s6_addr32[2] &= mask->s6_addr32[2];
+ addrinfo->list.addr.s6_addr32[3] &= mask->s6_addr32[3];
+ addrinfo->list.mask = *mask;
+ addrinfo->list.valid = 1;
+ ret_val = netlbl_af6list_add(&addrinfo->list, &addrmap->list6);
+ if (ret_val != 0)
+ goto cfg_calipso_map_add_failure;
+
+ entry->def.addrsel = addrmap;
+ entry->def.type = NETLBL_NLTYPE_ADDRSELECT;
+ } else {
+ ret_val = -EINVAL;
+ goto out_addrmap;
+ }
+
+ ret_val = netlbl_domhsh_add(entry, audit_info);
+ if (ret_val != 0)
+ goto cfg_calipso_map_add_failure;
+
+ return 0;
+
+cfg_calipso_map_add_failure:
+ kfree(addrinfo);
+out_addrinfo:
+ kfree(addrmap);
+out_addrmap:
+ kfree(entry->domain);
+out_domain:
+ kfree(entry);
+out_entry:
+ calipso_doi_putdef(doi_def);
+ return ret_val;
+#else /* IPv6 */
+ return -ENOSYS;
+#endif /* IPv6 */
+}
+
/*
* Security Attribute Functions
*/