summaryrefslogtreecommitdiff
path: root/security/smack/smack_lsm.c
diff options
context:
space:
mode:
Diffstat (limited to 'security/smack/smack_lsm.c')
-rw-r--r--security/smack/smack_lsm.c75
1 files changed, 44 insertions, 31 deletions
diff --git a/security/smack/smack_lsm.c b/security/smack/smack_lsm.c
index 3f7682a387b7..8825375cc031 100644
--- a/security/smack/smack_lsm.c
+++ b/security/smack/smack_lsm.c
@@ -582,7 +582,7 @@ static void smack_inode_free_security(struct inode *inode)
* Returns 0 if it all works out, -ENOMEM if there's no memory
*/
static int smack_inode_init_security(struct inode *inode, struct inode *dir,
- const struct qstr *qstr, char **name,
+ const struct qstr *qstr, const char **name,
void **value, size_t *len)
{
struct inode_smack *issp = inode->i_security;
@@ -591,11 +591,8 @@ static int smack_inode_init_security(struct inode *inode, struct inode *dir,
char *dsp = smk_of_inode(dir);
int may;
- if (name) {
- *name = kstrdup(XATTR_SMACK_SUFFIX, GFP_NOFS);
- if (*name == NULL)
- return -ENOMEM;
- }
+ if (name)
+ *name = XATTR_SMACK_SUFFIX;
if (value) {
rcu_read_lock();
@@ -1998,12 +1995,11 @@ static void smk_ipv6_port_label(struct socket *sock, struct sockaddr *address)
*
* Create or update the port list entry
*/
-static int smk_ipv6_port_check(struct sock *sk, struct sockaddr *address,
+static int smk_ipv6_port_check(struct sock *sk, struct sockaddr_in6 *address,
int act)
{
__be16 *bep;
__be32 *be32p;
- struct sockaddr_in6 *addr6;
struct smk_port_label *spp;
struct socket_smack *ssp = sk->sk_security;
struct smack_known *skp;
@@ -2025,10 +2021,9 @@ static int smk_ipv6_port_check(struct sock *sk, struct sockaddr *address,
/*
* Get the IP address and port from the address.
*/
- addr6 = (struct sockaddr_in6 *)address;
- port = ntohs(addr6->sin6_port);
- bep = (__be16 *)(&addr6->sin6_addr);
- be32p = (__be32 *)(&addr6->sin6_addr);
+ port = ntohs(address->sin6_port);
+ bep = (__be16 *)(&address->sin6_addr);
+ be32p = (__be32 *)(&address->sin6_addr);
/*
* It's remote, so port lookup does no good.
@@ -2060,9 +2055,9 @@ auditout:
ad.a.u.net->family = sk->sk_family;
ad.a.u.net->dport = port;
if (act == SMK_RECEIVING)
- ad.a.u.net->v6info.saddr = addr6->sin6_addr;
+ ad.a.u.net->v6info.saddr = address->sin6_addr;
else
- ad.a.u.net->v6info.daddr = addr6->sin6_addr;
+ ad.a.u.net->v6info.daddr = address->sin6_addr;
#endif
return smk_access(skp, object, MAY_WRITE, &ad);
}
@@ -2201,7 +2196,8 @@ static int smack_socket_connect(struct socket *sock, struct sockaddr *sap,
case PF_INET6:
if (addrlen < sizeof(struct sockaddr_in6))
return -EINVAL;
- rc = smk_ipv6_port_check(sock->sk, sap, SMK_CONNECTING);
+ rc = smk_ipv6_port_check(sock->sk, (struct sockaddr_in6 *)sap,
+ SMK_CONNECTING);
break;
}
return rc;
@@ -3034,7 +3030,7 @@ static int smack_socket_sendmsg(struct socket *sock, struct msghdr *msg,
int size)
{
struct sockaddr_in *sip = (struct sockaddr_in *) msg->msg_name;
- struct sockaddr *sap = (struct sockaddr *) msg->msg_name;
+ struct sockaddr_in6 *sap = (struct sockaddr_in6 *) msg->msg_name;
int rc = 0;
/*
@@ -3066,6 +3062,8 @@ static struct smack_known *smack_from_secattr(struct netlbl_lsm_secattr *sap,
{
struct smack_known *skp;
int found = 0;
+ int acat;
+ int kcat;
if ((sap->flags & NETLBL_SECATTR_MLS_LVL) != 0) {
/*
@@ -3082,12 +3080,28 @@ static struct smack_known *smack_from_secattr(struct netlbl_lsm_secattr *sap,
list_for_each_entry(skp, &smack_known_list, list) {
if (sap->attr.mls.lvl != skp->smk_netlabel.attr.mls.lvl)
continue;
- if (memcmp(sap->attr.mls.cat,
- skp->smk_netlabel.attr.mls.cat,
- SMK_CIPSOLEN) != 0)
- continue;
- found = 1;
- break;
+ /*
+ * Compare the catsets. Use the netlbl APIs.
+ */
+ if ((sap->flags & NETLBL_SECATTR_MLS_CAT) == 0) {
+ if ((skp->smk_netlabel.flags &
+ NETLBL_SECATTR_MLS_CAT) == 0)
+ found = 1;
+ break;
+ }
+ for (acat = -1, kcat = -1; acat == kcat; ) {
+ acat = netlbl_secattr_catmap_walk(
+ sap->attr.mls.cat, acat + 1);
+ kcat = netlbl_secattr_catmap_walk(
+ skp->smk_netlabel.attr.mls.cat,
+ kcat + 1);
+ if (acat < 0 || kcat < 0)
+ break;
+ }
+ if (acat == kcat) {
+ found = 1;
+ break;
+ }
}
rcu_read_unlock();
@@ -3121,9 +3135,8 @@ static struct smack_known *smack_from_secattr(struct netlbl_lsm_secattr *sap,
return smack_net_ambient;
}
-static int smk_skb_to_addr_ipv6(struct sk_buff *skb, struct sockaddr *sap)
+static int smk_skb_to_addr_ipv6(struct sk_buff *skb, struct sockaddr_in6 *sip)
{
- struct sockaddr_in6 *sip = (struct sockaddr_in6 *)sap;
u8 nexthdr;
int offset;
int proto = -EINVAL;
@@ -3181,7 +3194,7 @@ static int smack_socket_sock_rcv_skb(struct sock *sk, struct sk_buff *skb)
struct netlbl_lsm_secattr secattr;
struct socket_smack *ssp = sk->sk_security;
struct smack_known *skp;
- struct sockaddr sadd;
+ struct sockaddr_in6 sadd;
int rc = 0;
struct smk_audit_info ad;
#ifdef CONFIG_AUDIT
@@ -3879,12 +3892,12 @@ static __init void init_smack_known_list(void)
/*
* Create the known labels list
*/
- list_add(&smack_known_huh.list, &smack_known_list);
- list_add(&smack_known_hat.list, &smack_known_list);
- list_add(&smack_known_star.list, &smack_known_list);
- list_add(&smack_known_floor.list, &smack_known_list);
- list_add(&smack_known_invalid.list, &smack_known_list);
- list_add(&smack_known_web.list, &smack_known_list);
+ smk_insert_entry(&smack_known_huh);
+ smk_insert_entry(&smack_known_hat);
+ smk_insert_entry(&smack_known_star);
+ smk_insert_entry(&smack_known_floor);
+ smk_insert_entry(&smack_known_invalid);
+ smk_insert_entry(&smack_known_web);
}
/**
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-28 08:08:19 +0300