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authorStephen Rothwell <sfr@canb.auug.org.au>2008-12-01 17:35:43 +1100
committerStephen Rothwell <sfr@canb.auug.org.au>2008-12-01 17:35:43 +1100
commitd58d40c6599bcb035c7d58c49904e90dd0bc0a25 (patch)
tree5282166dcd3e0c3248612f780842b79ae5a2170c /net
parentac6bc3a2b97e6524aa31f5844e913445f596d86f (diff)
parent07873441b8ba47b7e7f31c298b0be2435d9d3cdd (diff)
Merge commit 'lblnet/master'
Diffstat (limited to 'net')
-rw-r--r--net/ipv4/cipso_ipv4.c86
-rw-r--r--net/netlabel/netlabel_cipso_v4.c61
-rw-r--r--net/netlabel/netlabel_kapi.c356
-rw-r--r--net/netlabel/netlabel_unlabeled.c70
-rw-r--r--net/netlabel/netlabel_unlabeled.h19
5 files changed, 438 insertions, 154 deletions
diff --git a/net/ipv4/cipso_ipv4.c b/net/ipv4/cipso_ipv4.c
index e52799047a5f..f2cc676f133f 100644
--- a/net/ipv4/cipso_ipv4.c
+++ b/net/ipv4/cipso_ipv4.c
@@ -38,6 +38,7 @@
#include <linux/spinlock.h>
#include <linux/string.h>
#include <linux/jhash.h>
+#include <linux/audit.h>
#include <net/ip.h>
#include <net/icmp.h>
#include <net/tcp.h>
@@ -449,6 +450,7 @@ static struct cipso_v4_doi *cipso_v4_doi_search(u32 doi)
/**
* cipso_v4_doi_add - Add a new DOI to the CIPSO protocol engine
* @doi_def: the DOI structure
+ * @audit_info: NetLabel audit information
*
* Description:
* The caller defines a new DOI for use by the CIPSO engine and calls this
@@ -458,50 +460,78 @@ static struct cipso_v4_doi *cipso_v4_doi_search(u32 doi)
* zero on success and non-zero on failure.
*
*/
-int cipso_v4_doi_add(struct cipso_v4_doi *doi_def)
+int cipso_v4_doi_add(struct cipso_v4_doi *doi_def,
+ struct netlbl_audit *audit_info)
{
+ int ret_val = -EINVAL;
u32 iter;
+ u32 doi;
+ u32 doi_type;
+ struct audit_buffer *audit_buf;
+
+ doi = doi_def->doi;
+ doi_type = doi_def->type;
if (doi_def == NULL || doi_def->doi == CIPSO_V4_DOI_UNKNOWN)
- return -EINVAL;
+ goto doi_add_return;
for (iter = 0; iter < CIPSO_V4_TAG_MAXCNT; iter++) {
switch (doi_def->tags[iter]) {
case CIPSO_V4_TAG_RBITMAP:
break;
case CIPSO_V4_TAG_RANGE:
- if (doi_def->type != CIPSO_V4_MAP_PASS)
- return -EINVAL;
- break;
- case CIPSO_V4_TAG_INVALID:
- if (iter == 0)
- return -EINVAL;
- break;
case CIPSO_V4_TAG_ENUM:
if (doi_def->type != CIPSO_V4_MAP_PASS)
- return -EINVAL;
+ goto doi_add_return;
break;
case CIPSO_V4_TAG_LOCAL:
if (doi_def->type != CIPSO_V4_MAP_LOCAL)
- return -EINVAL;
+ goto doi_add_return;
+ break;
+ case CIPSO_V4_TAG_INVALID:
+ if (iter == 0)
+ goto doi_add_return;
break;
default:
- return -EINVAL;
+ goto doi_add_return;
}
}
atomic_set(&doi_def->refcount, 1);
spin_lock(&cipso_v4_doi_list_lock);
- if (cipso_v4_doi_search(doi_def->doi) != NULL)
- goto doi_add_failure;
+ if (cipso_v4_doi_search(doi_def->doi) != NULL) {
+ spin_unlock(&cipso_v4_doi_list_lock);
+ ret_val = -EEXIST;
+ goto doi_add_return;
+ }
list_add_tail_rcu(&doi_def->list, &cipso_v4_doi_list);
spin_unlock(&cipso_v4_doi_list_lock);
+ ret_val = 0;
- return 0;
+doi_add_return:
+ audit_buf = netlbl_audit_start(AUDIT_MAC_CIPSOV4_ADD, audit_info);
+ if (audit_buf != NULL) {
+ const char *type_str;
+ switch (doi_type) {
+ case CIPSO_V4_MAP_TRANS:
+ type_str = "trans";
+ break;
+ case CIPSO_V4_MAP_PASS:
+ type_str = "pass";
+ break;
+ case CIPSO_V4_MAP_LOCAL:
+ type_str = "local";
+ break;
+ default:
+ type_str = "(unknown)";
+ }
+ audit_log_format(audit_buf,
+ " cipso_doi=%u cipso_type=%s res=%u",
+ doi, type_str, ret_val == 0 ? 1 : 0);
+ audit_log_end(audit_buf);
+ }
-doi_add_failure:
- spin_unlock(&cipso_v4_doi_list_lock);
- return -EEXIST;
+ return ret_val;
}
/**
@@ -559,25 +589,39 @@ static void cipso_v4_doi_free_rcu(struct rcu_head *entry)
*/
int cipso_v4_doi_remove(u32 doi, struct netlbl_audit *audit_info)
{
+ int ret_val;
struct cipso_v4_doi *doi_def;
+ struct audit_buffer *audit_buf;
spin_lock(&cipso_v4_doi_list_lock);
doi_def = cipso_v4_doi_search(doi);
if (doi_def == NULL) {
spin_unlock(&cipso_v4_doi_list_lock);
- return -ENOENT;
+ ret_val = -ENOENT;
+ goto doi_remove_return;
}
if (!atomic_dec_and_test(&doi_def->refcount)) {
spin_unlock(&cipso_v4_doi_list_lock);
- return -EBUSY;
+ ret_val = -EBUSY;
+ goto doi_remove_return;
}
list_del_rcu(&doi_def->list);
spin_unlock(&cipso_v4_doi_list_lock);
cipso_v4_cache_invalidate();
call_rcu(&doi_def->rcu, cipso_v4_doi_free_rcu);
+ ret_val = 0;
+
+doi_remove_return:
+ audit_buf = netlbl_audit_start(AUDIT_MAC_CIPSOV4_DEL, audit_info);
+ if (audit_buf != NULL) {
+ audit_log_format(audit_buf,
+ " cipso_doi=%u res=%u",
+ doi, ret_val == 0 ? 1 : 0);
+ audit_log_end(audit_buf);
+ }
- return 0;
+ return ret_val;
}
/**
diff --git a/net/netlabel/netlabel_cipso_v4.c b/net/netlabel/netlabel_cipso_v4.c
index fff32b70efa9..bf1ab1a6790d 100644
--- a/net/netlabel/netlabel_cipso_v4.c
+++ b/net/netlabel/netlabel_cipso_v4.c
@@ -130,6 +130,7 @@ static int netlbl_cipsov4_add_common(struct genl_info *info,
/**
* netlbl_cipsov4_add_std - Adds a CIPSO V4 DOI definition
* @info: the Generic NETLINK info block
+ * @audit_info: NetLabel audit information
*
* Description:
* Create a new CIPSO_V4_MAP_TRANS DOI definition based on the given ADD
@@ -137,7 +138,8 @@ static int netlbl_cipsov4_add_common(struct genl_info *info,
* non-zero on error.
*
*/
-static int netlbl_cipsov4_add_std(struct genl_info *info)
+static int netlbl_cipsov4_add_std(struct genl_info *info,
+ struct netlbl_audit *audit_info)
{
int ret_val = -EINVAL;
struct cipso_v4_doi *doi_def = NULL;
@@ -316,7 +318,7 @@ static int netlbl_cipsov4_add_std(struct genl_info *info)
}
}
- ret_val = cipso_v4_doi_add(doi_def);
+ ret_val = cipso_v4_doi_add(doi_def, audit_info);
if (ret_val != 0)
goto add_std_failure;
return 0;
@@ -330,6 +332,7 @@ add_std_failure:
/**
* netlbl_cipsov4_add_pass - Adds a CIPSO V4 DOI definition
* @info: the Generic NETLINK info block
+ * @audit_info: NetLabel audit information
*
* Description:
* Create a new CIPSO_V4_MAP_PASS DOI definition based on the given ADD message
@@ -337,7 +340,8 @@ add_std_failure:
* error.
*
*/
-static int netlbl_cipsov4_add_pass(struct genl_info *info)
+static int netlbl_cipsov4_add_pass(struct genl_info *info,
+ struct netlbl_audit *audit_info)
{
int ret_val;
struct cipso_v4_doi *doi_def = NULL;
@@ -354,7 +358,7 @@ static int netlbl_cipsov4_add_pass(struct genl_info *info)
if (ret_val != 0)
goto add_pass_failure;
- ret_val = cipso_v4_doi_add(doi_def);
+ ret_val = cipso_v4_doi_add(doi_def, audit_info);
if (ret_val != 0)
goto add_pass_failure;
return 0;
@@ -367,6 +371,7 @@ add_pass_failure:
/**
* netlbl_cipsov4_add_local - Adds a CIPSO V4 DOI definition
* @info: the Generic NETLINK info block
+ * @audit_info: NetLabel audit information
*
* Description:
* Create a new CIPSO_V4_MAP_LOCAL DOI definition based on the given ADD
@@ -374,7 +379,8 @@ add_pass_failure:
* non-zero on error.
*
*/
-static int netlbl_cipsov4_add_local(struct genl_info *info)
+static int netlbl_cipsov4_add_local(struct genl_info *info,
+ struct netlbl_audit *audit_info)
{
int ret_val;
struct cipso_v4_doi *doi_def = NULL;
@@ -391,7 +397,7 @@ static int netlbl_cipsov4_add_local(struct genl_info *info)
if (ret_val != 0)
goto add_local_failure;
- ret_val = cipso_v4_doi_add(doi_def);
+ ret_val = cipso_v4_doi_add(doi_def, audit_info);
if (ret_val != 0)
goto add_local_failure;
return 0;
@@ -415,48 +421,31 @@ static int netlbl_cipsov4_add(struct sk_buff *skb, struct genl_info *info)
{
int ret_val = -EINVAL;
- u32 type;
- u32 doi;
const char *type_str = "(unknown)";
- struct audit_buffer *audit_buf;
struct netlbl_audit audit_info;
if (!info->attrs[NLBL_CIPSOV4_A_DOI] ||
!info->attrs[NLBL_CIPSOV4_A_MTYPE])
return -EINVAL;
- doi = nla_get_u32(info->attrs[NLBL_CIPSOV4_A_DOI]);
netlbl_netlink_auditinfo(skb, &audit_info);
-
- type = nla_get_u32(info->attrs[NLBL_CIPSOV4_A_MTYPE]);
- switch (type) {
+ switch (nla_get_u32(info->attrs[NLBL_CIPSOV4_A_MTYPE])) {
case CIPSO_V4_MAP_TRANS:
type_str = "trans";
- ret_val = netlbl_cipsov4_add_std(info);
+ ret_val = netlbl_cipsov4_add_std(info, &audit_info);
break;
case CIPSO_V4_MAP_PASS:
type_str = "pass";
- ret_val = netlbl_cipsov4_add_pass(info);
+ ret_val = netlbl_cipsov4_add_pass(info, &audit_info);
break;
case CIPSO_V4_MAP_LOCAL:
type_str = "local";
- ret_val = netlbl_cipsov4_add_local(info);
+ ret_val = netlbl_cipsov4_add_local(info, &audit_info);
break;
}
if (ret_val == 0)
atomic_inc(&netlabel_mgmt_protocount);
- audit_buf = netlbl_audit_start_common(AUDIT_MAC_CIPSOV4_ADD,
- &audit_info);
- if (audit_buf != NULL) {
- audit_log_format(audit_buf,
- " cipso_doi=%u cipso_type=%s res=%u",
- doi,
- type_str,
- ret_val == 0 ? 1 : 0);
- audit_log_end(audit_buf);
- }
-
return ret_val;
}
@@ -725,9 +714,7 @@ static int netlbl_cipsov4_remove_cb(struct netlbl_dom_map *entry, void *arg)
static int netlbl_cipsov4_remove(struct sk_buff *skb, struct genl_info *info)
{
int ret_val = -EINVAL;
- u32 doi = 0;
struct netlbl_domhsh_walk_arg cb_arg;
- struct audit_buffer *audit_buf;
struct netlbl_audit audit_info;
u32 skip_bkt = 0;
u32 skip_chain = 0;
@@ -735,29 +722,17 @@ static int netlbl_cipsov4_remove(struct sk_buff *skb, struct genl_info *info)
if (!info->attrs[NLBL_CIPSOV4_A_DOI])
return -EINVAL;
- doi = nla_get_u32(info->attrs[NLBL_CIPSOV4_A_DOI]);
netlbl_netlink_auditinfo(skb, &audit_info);
-
- cb_arg.doi = doi;
+ cb_arg.doi = nla_get_u32(info->attrs[NLBL_CIPSOV4_A_DOI]);
cb_arg.audit_info = &audit_info;
ret_val = netlbl_domhsh_walk(&skip_bkt, &skip_chain,
netlbl_cipsov4_remove_cb, &cb_arg);
if (ret_val == 0 || ret_val == -ENOENT) {
- ret_val = cipso_v4_doi_remove(doi, &audit_info);
+ ret_val = cipso_v4_doi_remove(cb_arg.doi, &audit_info);
if (ret_val == 0)
atomic_dec(&netlabel_mgmt_protocount);
}
- audit_buf = netlbl_audit_start_common(AUDIT_MAC_CIPSOV4_DEL,
- &audit_info);
- if (audit_buf != NULL) {
- audit_log_format(audit_buf,
- " cipso_doi=%u res=%u",
- doi,
- ret_val == 0 ? 1 : 0);
- audit_log_end(audit_buf);
- }
-
return ret_val;
}
diff --git a/net/netlabel/netlabel_kapi.c b/net/netlabel/netlabel_kapi.c
index b32eceb3ab0d..5a9713c8861f 100644
--- a/net/netlabel/netlabel_kapi.c
+++ b/net/netlabel/netlabel_kapi.c
@@ -31,7 +31,10 @@
#include <linux/init.h>
#include <linux/types.h>
#include <linux/audit.h>
+#include <linux/in.h>
+#include <linux/in6.h>
#include <net/ip.h>
+#include <net/ipv6.h>
#include <net/netlabel.h>
#include <net/cipso_ipv4.h>
#include <asm/bug.h>
@@ -42,6 +45,13 @@
#include "netlabel_cipso_v4.h"
#include "netlabel_user.h"
#include "netlabel_mgmt.h"
+#include "netlabel_addrlist.h"
+
+/*
+ * Configuration Variables
+ */
+
+int netlbl_stclbl_priority = NETLBL_STCLBLPRI_LAST;
/*
* Configuration Functions
@@ -64,8 +74,11 @@ int netlbl_cfg_map_del(const char *domain, struct netlbl_audit *audit_info)
}
/**
- * netlbl_cfg_unlbl_add_map - Add an unlabeled NetLabel/LSM domain mapping
+ * netlbl_cfg_unlbl_map_add - Add a new unlabeled mapping
* @domain: the domain mapping to add
+ * @family: address family
+ * @addr: IP address
+ * @mask: IP address mask
* @audit_info: NetLabel audit information
*
* Description:
@@ -74,11 +87,19 @@ int netlbl_cfg_map_del(const char *domain, struct netlbl_audit *audit_info)
* negative values on failure.
*
*/
-int netlbl_cfg_unlbl_add_map(const char *domain,
+int netlbl_cfg_unlbl_map_add(const char *domain,
+ u16 family,
+ const void *addr,
+ const void *mask,
struct netlbl_audit *audit_info)
{
int ret_val = -ENOMEM;
struct netlbl_dom_map *entry;
+ struct netlbl_domaddr_map *addrmap = NULL;
+ struct netlbl_domaddr4_map *map4 = NULL;
+ struct netlbl_domaddr6_map *map6 = NULL;
+ const struct in_addr *addr4, *mask4;
+ const struct in6_addr *addr6, *mask6;
entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
if (entry == NULL)
@@ -86,49 +107,223 @@ int netlbl_cfg_unlbl_add_map(const char *domain,
if (domain != NULL) {
entry->domain = kstrdup(domain, GFP_ATOMIC);
if (entry->domain == NULL)
- goto cfg_unlbl_add_map_failure;
+ goto cfg_unlbl_map_add_failure;
+ }
+
+ if (addr == NULL && mask == NULL)
+ entry->type = NETLBL_NLTYPE_UNLABELED;
+ else if (addr != NULL && mask != NULL) {
+ addrmap = kzalloc(sizeof(*addrmap), GFP_ATOMIC);
+ if (addrmap == NULL)
+ goto cfg_unlbl_map_add_failure;
+ INIT_LIST_HEAD(&addrmap->list4);
+ INIT_LIST_HEAD(&addrmap->list6);
+
+ switch (family) {
+ case AF_INET:
+ addr4 = addr;
+ mask4 = mask;
+ map4 = kzalloc(sizeof(*map4), GFP_ATOMIC);
+ if (map4 == NULL)
+ goto cfg_unlbl_map_add_failure;
+ map4->type = NETLBL_NLTYPE_UNLABELED;
+ map4->list.addr = addr4->s_addr & mask4->s_addr;
+ map4->list.mask = mask4->s_addr;
+ map4->list.valid = 1;
+ ret_val = netlbl_af4list_add(&map4->list, &addrmap->list4);
+ if (ret_val != 0)
+ goto cfg_unlbl_map_add_failure;
+ break;
+ case AF_INET6:
+ addr6 = addr;
+ mask6 = mask;
+ map6 = kzalloc(sizeof(*map6), GFP_ATOMIC);
+ if (map4 == NULL)
+ goto cfg_unlbl_map_add_failure;
+ map6->type = NETLBL_NLTYPE_UNLABELED;
+ ipv6_addr_copy(&map6->list.addr, addr6);
+ map6->list.addr.s6_addr32[0] &= mask6->s6_addr32[0];
+ map6->list.addr.s6_addr32[1] &= mask6->s6_addr32[1];
+ map6->list.addr.s6_addr32[2] &= mask6->s6_addr32[2];
+ map6->list.addr.s6_addr32[3] &= mask6->s6_addr32[3];
+ ipv6_addr_copy(&map6->list.mask, mask6);
+ map6->list.valid = 1;
+ ret_val = netlbl_af4list_add(&map4->list, &addrmap->list4);
+ if (ret_val != 0)
+ goto cfg_unlbl_map_add_failure;
+ break;
+ default:
+ goto cfg_unlbl_map_add_failure;
+ break;
+ }
+
+ entry->type_def.addrsel = addrmap;
+ entry->type = NETLBL_NLTYPE_ADDRSELECT;
+ } else {
+ ret_val = -EINVAL;
+ goto cfg_unlbl_map_add_failure;
}
- entry->type = NETLBL_NLTYPE_UNLABELED;
ret_val = netlbl_domhsh_add(entry, audit_info);
if (ret_val != 0)
- goto cfg_unlbl_add_map_failure;
+ goto cfg_unlbl_map_add_failure;
return 0;
-cfg_unlbl_add_map_failure:
+cfg_unlbl_map_add_failure:
if (entry != NULL)
kfree(entry->domain);
kfree(entry);
+ kfree(addrmap);
+ kfree(map4);
+ kfree(map6);
return ret_val;
}
+
+/**
+ * netlbl_cfg_unlbl_static_add - Adds a new static label
+ * @net: network namespace
+ * @dev_name: interface name
+ * @addr: IP address in network byte order (struct in[6]_addr)
+ * @mask: address mask in network byte order (struct in[6]_addr)
+ * @family: address family
+ * @secid: LSM secid value for the entry
+ * @audit_info: NetLabel audit information
+ *
+ * Description:
+ * Adds a new NetLabel static label to be used when protocol provided labels
+ * are not present on incoming traffic. If @dev_name is NULL then the default
+ * interface will be used. Returns zero on success, negative values on failure.
+ *
+ */
+int netlbl_cfg_unlbl_static_add(struct net *net,
+ const char *dev_name,
+ const void *addr,
+ const void *mask,
+ u16 family,
+ u32 secid,
+ struct netlbl_audit *audit_info)
+{
+ u32 addr_len;
+
+ switch (family) {
+ case AF_INET:
+ addr_len = sizeof(struct in_addr);
+ break;
+ case AF_INET6:
+ addr_len = sizeof(struct in6_addr);
+ break;
+ default:
+ return -EPFNOSUPPORT;
+ }
+
+ return netlbl_unlhsh_add(net,
+ dev_name, addr, mask, addr_len,
+ secid, audit_info);
+}
+
+/**
+ * netlbl_cfg_unlbl_static_del - Removes an existing static label
+ * @net: network namespace
+ * @dev_name: interface name
+ * @addr: IP address in network byte order (struct in[6]_addr)
+ * @mask: address mask in network byte order (struct in[6]_addr)
+ * @family: address family
+ * @secid: LSM secid value for the entry
+ * @audit_info: NetLabel audit information
+ *
+ * Description:
+ * Removes an existing NetLabel static label used when protocol provided labels
+ * are not present on incoming traffic. If @dev_name is NULL then the default
+ * interface will be used. Returns zero on success, negative values on failure.
+ *
+ */
+int netlbl_cfg_unlbl_static_del(struct net *net,
+ const char *dev_name,
+ const void *addr,
+ const void *mask,
+ u16 family,
+ struct netlbl_audit *audit_info)
+{
+ u32 addr_len;
+
+ switch (family) {
+ case AF_INET:
+ addr_len = sizeof(struct in_addr);
+ break;
+ case AF_INET6:
+ addr_len = sizeof(struct in6_addr);
+ break;
+ default:
+ return -EPFNOSUPPORT;
+ }
+
+ return netlbl_unlhsh_remove(net,
+ dev_name, addr, mask, addr_len,
+ audit_info);
+}
+
+/**
+ * netlbl_cfg_cipsov4_add - Add a new CIPSOv4 DOI definition
+ * @doi_def: CIPSO DOI definition
+ * @audit_info: NetLabel audit information
+ *
+ * Description:
+ * Add a new CIPSO DOI definition as defined by @doi_def. Returns zero on
+ * success and negative values on failure.
+ *
+ */
+int netlbl_cfg_cipsov4_add(struct cipso_v4_doi *doi_def,
+ struct netlbl_audit *audit_info)
+{
+ return cipso_v4_doi_add(doi_def, audit_info);
+}
+
/**
- * netlbl_cfg_cipsov4_add_map - Add a new CIPSOv4 DOI definition and mapping
- * @doi_def: the DOI definition
+ * netlbl_cfg_cipsov4_del - Remove an existing CIPSOv4 DOI definition
+ * @doi: CIPSO DOI
+ * @audit_info: NetLabel audit information
+ *
+ * Description:
+ * Remove an existing CIPSO DOI definition matching @doi. Returns zero on
+ * success and negative values on failure.
+ *
+ */
+void netlbl_cfg_cipsov4_del(u32 doi, struct netlbl_audit *audit_info)
+{
+ cipso_v4_doi_remove(doi, audit_info);
+}
+
+/**
+ * netlbl_cfg_cipsov4_map_add - Add a new CIPSOv4 DOI mapping
+ * @doi: the CIPSO DOI
* @domain: the domain mapping to add
+ * @addr: IP address
+ * @mask: IP address mask
* @audit_info: NetLabel audit information
*
* Description:
- * Add a new CIPSOv4 DOI definition and NetLabel/LSM domain mapping for this
- * new DOI definition to the NetLabel subsystem. A @domain value of NULL adds
- * a new default domain mapping. Returns zero on success, negative values on
- * failure.
+ * Add a new NetLabel/LSM domain mapping for the given CIPSO 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_cipsov4_add_map(struct cipso_v4_doi *doi_def,
+int netlbl_cfg_cipsov4_map_add(u32 doi,
const char *domain,
+ const struct in_addr *addr,
+ const struct in_addr *mask,
struct netlbl_audit *audit_info)
{
int ret_val = -ENOMEM;
- u32 doi;
- u32 doi_type;
+ struct cipso_v4_doi *doi_def;
struct netlbl_dom_map *entry;
- const char *type_str;
- struct audit_buffer *audit_buf;
+ struct netlbl_domaddr_map *addrmap = NULL;
+ struct netlbl_domaddr4_map *addrinfo = NULL;
- doi = doi_def->doi;
- doi_type = doi_def->type;
+ doi_def = cipso_v4_doi_getdef(doi);
+ if (doi_def == NULL)
+ return -ENOENT;
entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
if (entry == NULL)
@@ -136,56 +331,52 @@ int netlbl_cfg_cipsov4_add_map(struct cipso_v4_doi *doi_def,
if (domain != NULL) {
entry->domain = kstrdup(domain, GFP_ATOMIC);
if (entry->domain == NULL)
- goto cfg_cipsov4_add_map_failure;
+ goto cfg_cipsov4_map_add_failure;
}
- ret_val = cipso_v4_doi_add(doi_def);
- if (ret_val != 0)
- goto cfg_cipsov4_add_map_failure_remove_doi;
- entry->type = NETLBL_NLTYPE_CIPSOV4;
- entry->type_def.cipsov4 = cipso_v4_doi_getdef(doi);
- if (entry->type_def.cipsov4 == NULL) {
- ret_val = -ENOENT;
- goto cfg_cipsov4_add_map_failure_remove_doi;
+ if (addr == NULL && mask == NULL) {
+ entry->type_def.cipsov4 = doi_def;
+ entry->type = NETLBL_NLTYPE_CIPSOV4;
+ } else if (addr != NULL && mask != NULL) {
+ addrmap = kzalloc(sizeof(*addrmap), GFP_ATOMIC);
+ if (addrmap == NULL)
+ goto cfg_cipsov4_map_add_failure;
+ INIT_LIST_HEAD(&addrmap->list4);
+ INIT_LIST_HEAD(&addrmap->list6);
+
+ addrinfo = kzalloc(sizeof(*addrinfo), GFP_ATOMIC);
+ if (addrinfo == NULL)
+ goto cfg_cipsov4_map_add_failure;
+ addrinfo->type_def.cipsov4 = doi_def;
+ addrinfo->type = NETLBL_NLTYPE_CIPSOV4;
+ addrinfo->list.addr = addr->s_addr & mask->s_addr;
+ addrinfo->list.mask = mask->s_addr;
+ addrinfo->list.valid = 1;
+ ret_val = netlbl_af4list_add(&addrinfo->list, &addrmap->list4);
+ if (ret_val != 0)
+ goto cfg_cipsov4_map_add_failure;
+
+ entry->type_def.addrsel = addrmap;
+ entry->type = NETLBL_NLTYPE_ADDRSELECT;
+ } else {
+ ret_val = -EINVAL;
+ goto cfg_cipsov4_map_add_failure;
}
+
ret_val = netlbl_domhsh_add(entry, audit_info);
if (ret_val != 0)
- goto cfg_cipsov4_add_map_failure_release_doi;
-
-cfg_cipsov4_add_map_return:
- audit_buf = netlbl_audit_start_common(AUDIT_MAC_CIPSOV4_ADD,
- audit_info);
- if (audit_buf != NULL) {
- switch (doi_type) {
- case CIPSO_V4_MAP_TRANS:
- type_str = "trans";
- break;
- case CIPSO_V4_MAP_PASS:
- type_str = "pass";
- break;
- case CIPSO_V4_MAP_LOCAL:
- type_str = "local";
- break;
- default:
- type_str = "(unknown)";
- }
- audit_log_format(audit_buf,
- " cipso_doi=%u cipso_type=%s res=%u",
- doi, type_str, ret_val == 0 ? 1 : 0);
- audit_log_end(audit_buf);
- }
+ goto cfg_cipsov4_map_add_failure;
- return ret_val;
+ return 0;
-cfg_cipsov4_add_map_failure_release_doi:
+cfg_cipsov4_map_add_failure:
cipso_v4_doi_putdef(doi_def);
-cfg_cipsov4_add_map_failure_remove_doi:
- cipso_v4_doi_remove(doi, audit_info);
-cfg_cipsov4_add_map_failure:
if (entry != NULL)
kfree(entry->domain);
kfree(entry);
- goto cfg_cipsov4_add_map_return;
+ kfree(addrmap);
+ kfree(addrinfo);
+ return ret_val;
}
/*
@@ -628,11 +819,30 @@ int netlbl_skbuff_getattr(const struct sk_buff *skb,
u16 family,
struct netlbl_lsm_secattr *secattr)
{
- if (CIPSO_V4_OPTEXIST(skb) &&
- cipso_v4_skbuff_getattr(skb, secattr) == 0)
- return 0;
+ int ret_val;
+
+ if (netlbl_stclbl_priority == NETLBL_STCLBLPRI_FIRST) {
+ ret_val = netlbl_unlabel_getattr_static(skb, family, secattr);
+ if (ret_val == 0 && secattr->type & NETLBL_SECATTR_SECID)
+ return 0;
+ }
+
+ switch (family) {
+ case AF_INET:
+ if (CIPSO_V4_OPTEXIST(skb) &&
+ cipso_v4_skbuff_getattr(skb, secattr) == 0)
+ return 0;
+ break;
+ default:
+ break;
+ }
+
+ if (netlbl_stclbl_priority == NETLBL_STCLBLPRI_FIRST)
+ ret_val = netlbl_unlabel_getattr(skb, secattr);
+ else
+ ret_val = netlbl_unlabel_getattr_static(skb, family, secattr);
- return netlbl_unlabel_getattr(skb, family, secattr);
+ return ret_val;
}
/**
@@ -691,6 +901,28 @@ int netlbl_cache_add(const struct sk_buff *skb,
}
/*
+ * Protocol Engine Functions
+ */
+
+/**
+ * netlbl_audit_start - Start an audit message
+ * @type: audit message type
+ * @audit_info: NetLabel audit information
+ *
+ * Description:
+ * Start an audit message using the type specified in @type and fill the audit
+ * message with some fields common to all NetLabel audit messages. This
+ * function should only be used by protocol engines, not LSMs. Returns a
+ * pointer to the audit buffer on success, NULL on failure.
+ *
+ */
+struct audit_buffer *netlbl_audit_start(int type,
+ struct netlbl_audit *audit_info)
+{
+ return netlbl_audit_start_common(type, audit_info);
+}
+
+/*
* Setup Functions
*/
diff --git a/net/netlabel/netlabel_unlabeled.c b/net/netlabel/netlabel_unlabeled.c
index e8a5c32b0f10..a4316bf235bd 100644
--- a/net/netlabel/netlabel_unlabeled.c
+++ b/net/netlabel/netlabel_unlabeled.c
@@ -118,7 +118,7 @@ static struct netlbl_unlhsh_tbl *netlbl_unlhsh = NULL;
static struct netlbl_unlhsh_iface *netlbl_unlhsh_def = NULL;
/* Accept unlabeled packets flag */
-static u8 netlabel_unlabel_acceptflg = 0;
+int netlbl_unlbl_accept = NETLBL_UNLACCEPT_ON;
/* NetLabel Generic NETLINK unlabeled family */
static struct genl_family netlbl_unlabel_gnl_family = {
@@ -450,13 +450,13 @@ add_iface_failure:
* success, negative values on failure.
*
*/
-static int netlbl_unlhsh_add(struct net *net,
- const char *dev_name,
- const void *addr,
- const void *mask,
- u32 addr_len,
- u32 secid,
- struct netlbl_audit *audit_info)
+int netlbl_unlhsh_add(struct net *net,
+ const char *dev_name,
+ const void *addr,
+ const void *mask,
+ u32 addr_len,
+ u32 secid,
+ struct netlbl_audit *audit_info)
{
int ret_val;
int ifindex;
@@ -716,12 +716,12 @@ unlhsh_condremove_failure:
* Returns zero on success, negative values on failure.
*
*/
-static int netlbl_unlhsh_remove(struct net *net,
- const char *dev_name,
- const void *addr,
- const void *mask,
- u32 addr_len,
- struct netlbl_audit *audit_info)
+int netlbl_unlhsh_remove(struct net *net,
+ const char *dev_name,
+ const void *addr,
+ const void *mask,
+ u32 addr_len,
+ struct netlbl_audit *audit_info)
{
int ret_val;
struct net_device *dev;
@@ -831,8 +831,8 @@ static void netlbl_unlabel_acceptflg_set(u8 value,
struct audit_buffer *audit_buf;
u8 old_val;
- old_val = netlabel_unlabel_acceptflg;
- netlabel_unlabel_acceptflg = value;
+ old_val = netlbl_unlbl_accept;
+ netlbl_unlbl_accept = value;
audit_buf = netlbl_audit_start_common(AUDIT_MAC_UNLBL_ALLOW,
audit_info);
if (audit_buf != NULL) {
@@ -943,7 +943,7 @@ static int netlbl_unlabel_list(struct sk_buff *skb, struct genl_info *info)
ret_val = nla_put_u8(ans_skb,
NLBL_UNLABEL_A_ACPTFLG,
- netlabel_unlabel_acceptflg);
+ netlbl_unlbl_accept);
if (ret_val != 0)
goto list_failure;
@@ -1543,20 +1543,41 @@ int __init netlbl_unlabel_init(u32 size)
}
/**
- * netlbl_unlabel_getattr - Get the security attributes for an unlabled packet
+ * netlbl_unlabel_getattr - Get the secattrs for an unlabled packet
* @skb: the packet
* @family: protocol family
* @secattr: the security attributes
*
* Description:
- * Determine the security attributes, if any, for an unlabled packet and return
- * them in @secattr. Returns zero on success and negative values on failure.
+ * Determine if unlabeled packets are allowed, ignoring any static labels.
+ * Returns zero on success and negative values on failure.
*
*/
int netlbl_unlabel_getattr(const struct sk_buff *skb,
- u16 family,
struct netlbl_lsm_secattr *secattr)
{
+ if (netlbl_unlbl_accept == 0)
+ return -ENOMSG;
+ secattr->type = NETLBL_NLTYPE_UNLABELED;
+ return 0;
+}
+
+/**
+ * netlbl_unlabel_getattr_static - Get the secattrs for an unlabled packet
+ * @skb: the packet
+ * @family: protocol family
+ * @secattr: the security attributes
+ *
+ * Description:
+ * Determine the security attributes, taking into account the static labels,
+ * for an unlabled packet and return them in @secattr. Returns zero on success
+ * and negative values on failure.
+ *
+ */
+int netlbl_unlabel_getattr_static(const struct sk_buff *skb,
+ u16 family,
+ struct netlbl_lsm_secattr *secattr)
+{
struct netlbl_unlhsh_iface *iface;
rcu_read_lock();
@@ -1601,10 +1622,7 @@ int netlbl_unlabel_getattr(const struct sk_buff *skb,
unlabel_getattr_nolabel:
rcu_read_unlock();
- if (netlabel_unlabel_acceptflg == 0)
- return -ENOMSG;
- secattr->type = NETLBL_NLTYPE_UNLABELED;
- return 0;
+ return netlbl_unlabel_getattr(skb, secattr);
}
/**
@@ -1636,7 +1654,5 @@ int __init netlbl_unlabel_defconf(void)
if (ret_val != 0)
return ret_val;
- netlbl_unlabel_acceptflg_set(1, &audit_info);
-
return 0;
}
diff --git a/net/netlabel/netlabel_unlabeled.h b/net/netlabel/netlabel_unlabeled.h
index 06b1301ac072..4ec189de344f 100644
--- a/net/netlabel/netlabel_unlabeled.h
+++ b/net/netlabel/netlabel_unlabeled.h
@@ -221,10 +221,27 @@ int netlbl_unlabel_genl_init(void);
/* General Unlabeled init function */
int netlbl_unlabel_init(u32 size);
+/* Static/Fallback label management functions */
+int netlbl_unlhsh_add(struct net *net,
+ const char *dev_name,
+ const void *addr,
+ const void *mask,
+ u32 addr_len,
+ u32 secid,
+ struct netlbl_audit *audit_info);
+int netlbl_unlhsh_remove(struct net *net,
+ const char *dev_name,
+ const void *addr,
+ const void *mask,
+ u32 addr_len,
+ struct netlbl_audit *audit_info);
+
/* Process Unlabeled incoming network packets */
int netlbl_unlabel_getattr(const struct sk_buff *skb,
- u16 family,
struct netlbl_lsm_secattr *secattr);
+int netlbl_unlabel_getattr_static(const struct sk_buff *skb,
+ u16 family,
+ struct netlbl_lsm_secattr *secattr);
/* Set the default configuration to allow Unlabeled packets */
int netlbl_unlabel_defconf(void);