extern unsigned int policydb_loaded_version;
extern int selinux_nlmsg_lookup(u16 sclass, u16 nlmsg_type, u32 *perm);
-extern int selinux_compat_net;
extern struct security_operations *security_ops;
/* SECMARK reference count */
ssec->sid = SECINITSID_UNLABELED;
sk->sk_security = ssec;
- selinux_netlbl_sk_security_reset(ssec, family);
+ selinux_netlbl_sk_security_reset(ssec);
return 0;
}
dentry = d_find_alias(inode);
}
if (!dentry) {
- printk(KERN_WARNING "SELinux: %s: no dentry for dev=%s "
- "ino=%ld\n", __func__, inode->i_sb->s_id,
- inode->i_ino);
+ /*
+ * this is can be hit on boot when a file is accessed
+ * before the policy is loaded. When we load policy we
+ * may find inodes that have no dentry on the
+ * sbsec->isec_head list. No reason to complain as these
+ * will get fixed up the next time we go through
+ * inode_doinit with a dentry, before these inodes could
+ * be used again by userspace.
+ */
goto out_unlock;
}
len = INITCONTEXTLEN;
- context = kmalloc(len, GFP_NOFS);
+ context = kmalloc(len+1, GFP_NOFS);
if (!context) {
rc = -ENOMEM;
dput(dentry);
goto out_unlock;
}
+ context[len] = '\0';
rc = inode->i_op->getxattr(dentry, XATTR_NAME_SELINUX,
context, len);
if (rc == -ERANGE) {
}
kfree(context);
len = rc;
- context = kmalloc(len, GFP_NOFS);
+ context = kmalloc(len+1, GFP_NOFS);
if (!context) {
rc = -ENOMEM;
dput(dentry);
goto out_unlock;
}
+ context[len] = '\0';
rc = inode->i_op->getxattr(dentry,
XATTR_NAME_SELINUX,
context, len);
sbsec->def_sid,
GFP_NOFS);
if (rc) {
- printk(KERN_WARNING "SELinux: %s: context_to_sid(%s) "
- "returned %d for dev=%s ino=%ld\n",
- __func__, context, -rc,
- inode->i_sb->s_id, inode->i_ino);
+ char *dev = inode->i_sb->s_id;
+ unsigned long ino = inode->i_ino;
+
+ if (rc == -EINVAL) {
+ if (printk_ratelimit())
+ printk(KERN_NOTICE "SELinux: inode=%lu on dev=%s was found to have an invalid "
+ "context=%s. This indicates you may need to relabel the inode or the "
+ "filesystem in question.\n", ino, dev, context);
+ } else {
+ printk(KERN_WARNING "SELinux: %s: context_to_sid(%s) "
+ "returned %d for dev=%s ino=%ld\n",
+ __func__, context, -rc, dev, ino);
+ }
kfree(context);
/* Leave with the unlabeled SID */
rc = 0;
av |= FIFO_FILE__OPEN;
else if (S_ISDIR(mode))
av |= DIR__OPEN;
+ else if (S_ISSOCK(mode))
+ av |= SOCK_FILE__OPEN;
else
printk(KERN_ERR "SELinux: WARNING: inside %s with "
"unknown mode:%o\n", __func__, mode);
/* Hook functions begin here. */
-static int selinux_ptrace_may_access(struct task_struct *child,
+static int selinux_ptrace_access_check(struct task_struct *child,
unsigned int mode)
{
int rc;
- rc = secondary_ops->ptrace_may_access(child, mode);
+ rc = cap_ptrace_access_check(child, mode);
if (rc)
return rc;
{
int rc;
- rc = secondary_ops->ptrace_traceme(parent);
+ rc = cap_ptrace_traceme(parent);
if (rc)
return rc;
if (error)
return error;
- return secondary_ops->capget(target, effective, inheritable, permitted);
+ return cap_capget(target, effective, inheritable, permitted);
}
static int selinux_capset(struct cred *new, const struct cred *old,
{
int error;
- error = secondary_ops->capset(new, old,
+ error = cap_capset(new, old,
effective, inheritable, permitted);
if (error)
return error;
{
int rc;
- rc = secondary_ops->capable(tsk, cred, cap, audit);
+ rc = cap_capable(tsk, cred, cap, audit);
if (rc)
return rc;
u32 tsid, sid;
int rc;
- rc = secondary_ops->sysctl(table, op);
- if (rc)
- return rc;
-
sid = current_sid();
rc = selinux_sysctl_get_sid(table, (op == 0001) ?
{
int rc;
- rc = secondary_ops->syslog(type);
+ rc = cap_syslog(type);
if (rc)
return rc;
* mapping. 0 means there is enough memory for the allocation to
* succeed and -ENOMEM implies there is not.
*
- * Note that secondary_ops->capable and task_has_perm_noaudit return 0
- * if the capability is granted, but __vm_enough_memory requires 1 if
- * the capability is granted.
- *
* Do not audit the selinux permission check, as this is applied to all
* processes that allocate mappings.
*/
struct inode *inode = bprm->file->f_path.dentry->d_inode;
int rc;
- rc = secondary_ops->bprm_set_creds(bprm);
+ rc = cap_bprm_set_creds(bprm);
if (rc)
return rc;
PROCESS__NOATSECURE, NULL);
}
- return (atsecure || secondary_ops->bprm_secureexec(bprm));
+ return (atsecure || cap_bprm_secureexec(bprm));
}
extern struct vfsmount *selinuxfs_mount;
{
const struct task_security_struct *tsec = current_security();
struct itimerval itimer;
- struct sighand_struct *psig;
u32 osid, sid;
int rc, i;
- unsigned long flags;
osid = tsec->osid;
sid = tsec->sid;
memset(&itimer, 0, sizeof itimer);
for (i = 0; i < 3; i++)
do_setitimer(i, &itimer, NULL);
- flush_signals(current);
spin_lock_irq(¤t->sighand->siglock);
- flush_signal_handlers(current, 1);
- sigemptyset(¤t->blocked);
- recalc_sigpending();
+ if (!(current->signal->flags & SIGNAL_GROUP_EXIT)) {
+ __flush_signals(current);
+ flush_signal_handlers(current, 1);
+ sigemptyset(¤t->blocked);
+ }
spin_unlock_irq(¤t->sighand->siglock);
}
/* Wake up the parent if it is waiting so that it can recheck
* wait permission to the new task SID. */
- read_lock_irq(&tasklist_lock);
- psig = current->parent->sighand;
- spin_lock_irqsave(&psig->siglock, flags);
- wake_up_interruptible(¤t->parent->signal->wait_chldexit);
- spin_unlock_irqrestore(&psig->siglock, flags);
- read_unlock_irq(&tasklist_lock);
+ read_lock(&tasklist_lock);
+ wake_up_interruptible(¤t->real_parent->signal->wait_chldexit);
+ read_unlock(&tasklist_lock);
}
/* superblock security operations */
static int selinux_revalidate_file_permission(struct file *file, int mask)
{
const struct cred *cred = current_cred();
- int rc;
struct inode *inode = file->f_path.dentry->d_inode;
- if (!mask) {
- /* No permission to check. Existence test. */
- return 0;
- }
-
/* file_mask_to_av won't add FILE__WRITE if MAY_APPEND is set */
if ((file->f_flags & O_APPEND) && (mask & MAY_WRITE))
mask |= MAY_APPEND;
- rc = file_has_perm(cred, file,
- file_mask_to_av(inode->i_mode, mask));
- if (rc)
- return rc;
-
- return selinux_netlbl_inode_permission(inode, mask);
+ return file_has_perm(cred, file,
+ file_mask_to_av(inode->i_mode, mask));
}
static int selinux_file_permission(struct file *file, int mask)
struct inode_security_struct *isec = inode->i_security;
u32 sid = current_sid();
- if (!mask) {
+ if (!mask)
/* No permission to check. Existence test. */
return 0;
- }
- if (sid == fsec->sid && fsec->isid == isec->sid
- && fsec->pseqno == avc_policy_seqno())
- return selinux_netlbl_inode_permission(inode, mask);
+ if (sid == fsec->sid && fsec->isid == isec->sid &&
+ fsec->pseqno == avc_policy_seqno())
+ /* No change since dentry_open check. */
+ return 0;
return selinux_revalidate_file_permission(file, mask);
}
struct fown_struct *fown, int signum)
{
struct file *file;
- u32 sid = current_sid();
+ u32 sid = task_sid(tsk);
u32 perm;
struct file_security_struct *fsec;
{
int rc;
- rc = secondary_ops->task_setnice(p, nice);
+ rc = cap_task_setnice(p, nice);
if (rc)
return rc;
{
int rc;
- rc = secondary_ops->task_setioprio(p, ioprio);
+ rc = cap_task_setioprio(p, ioprio);
if (rc)
return rc;
{
int rc;
- rc = secondary_ops->task_setscheduler(p, policy, lp);
+ rc = cap_task_setscheduler(p, policy, lp);
if (rc)
return rc;
sksec = sock->sk->sk_security;
sksec->sid = isec->sid;
sksec->sclass = isec->sclass;
- err = selinux_netlbl_socket_post_create(sock);
+ err = selinux_netlbl_socket_post_create(sock->sk, family);
}
return err;
static int selinux_socket_sendmsg(struct socket *sock, struct msghdr *msg,
int size)
{
- int rc;
-
- rc = socket_has_perm(current, sock, SOCKET__WRITE);
- if (rc)
- return rc;
-
- return selinux_netlbl_inode_permission(SOCK_INODE(sock), MAY_WRITE);
+ return socket_has_perm(current, sock, SOCKET__WRITE);
}
static int selinux_socket_recvmsg(struct socket *sock, struct msghdr *msg,
SECCLASS_NODE, NODE__RECVFROM, ad);
}
-static int selinux_sock_rcv_skb_iptables_compat(struct sock *sk,
- struct sk_buff *skb,
- struct avc_audit_data *ad,
- u16 family,
- char *addrp)
-{
- int err;
- struct sk_security_struct *sksec = sk->sk_security;
- u16 sk_class;
- u32 netif_perm, node_perm, recv_perm;
- u32 port_sid, node_sid, if_sid, sk_sid;
-
- sk_sid = sksec->sid;
- sk_class = sksec->sclass;
-
- switch (sk_class) {
- case SECCLASS_UDP_SOCKET:
- netif_perm = NETIF__UDP_RECV;
- node_perm = NODE__UDP_RECV;
- recv_perm = UDP_SOCKET__RECV_MSG;
- break;
- case SECCLASS_TCP_SOCKET:
- netif_perm = NETIF__TCP_RECV;
- node_perm = NODE__TCP_RECV;
- recv_perm = TCP_SOCKET__RECV_MSG;
- break;
- case SECCLASS_DCCP_SOCKET:
- netif_perm = NETIF__DCCP_RECV;
- node_perm = NODE__DCCP_RECV;
- recv_perm = DCCP_SOCKET__RECV_MSG;
- break;
- default:
- netif_perm = NETIF__RAWIP_RECV;
- node_perm = NODE__RAWIP_RECV;
- recv_perm = 0;
- break;
- }
-
- err = sel_netif_sid(skb->iif, &if_sid);
- if (err)
- return err;
- err = avc_has_perm(sk_sid, if_sid, SECCLASS_NETIF, netif_perm, ad);
- if (err)
- return err;
-
- err = sel_netnode_sid(addrp, family, &node_sid);
- if (err)
- return err;
- err = avc_has_perm(sk_sid, node_sid, SECCLASS_NODE, node_perm, ad);
- if (err)
- return err;
-
- if (!recv_perm)
- return 0;
- err = sel_netport_sid(sk->sk_protocol,
- ntohs(ad->u.net.sport), &port_sid);
- if (unlikely(err)) {
- printk(KERN_WARNING
- "SELinux: failure in"
- " selinux_sock_rcv_skb_iptables_compat(),"
- " network port label not found\n");
- return err;
- }
- return avc_has_perm(sk_sid, port_sid, sk_class, recv_perm, ad);
-}
-
static int selinux_sock_rcv_skb_compat(struct sock *sk, struct sk_buff *skb,
u16 family)
{
if (err)
return err;
- if (selinux_compat_net)
- err = selinux_sock_rcv_skb_iptables_compat(sk, skb, &ad,
- family, addrp);
- else if (selinux_secmark_enabled())
+ if (selinux_secmark_enabled()) {
err = avc_has_perm(sk_sid, skb->secmark, SECCLASS_PACKET,
PACKET__RECV, &ad);
- if (err)
- return err;
+ if (err)
+ return err;
+ }
if (selinux_policycap_netpeer) {
err = selinux_skb_peerlbl_sid(skb, family, &peer_sid);
* to the selinux_sock_rcv_skb_compat() function to deal with the
* special handling. We do this in an attempt to keep this function
* as fast and as clean as possible. */
- if (selinux_compat_net || !selinux_policycap_netpeer)
+ if (!selinux_policycap_netpeer)
return selinux_sock_rcv_skb_compat(sk, skb, family);
secmark_active = selinux_secmark_enabled();
newssec->peer_sid = ssec->peer_sid;
newssec->sclass = ssec->sclass;
- selinux_netlbl_sk_security_reset(newssec, newsk->sk_family);
+ selinux_netlbl_sk_security_reset(newssec);
}
static void selinux_sk_getsecid(struct sock *sk, u32 *secid)
if (peersid == SECSID_NULL) {
req->secid = sksec->sid;
req->peer_secid = SECSID_NULL;
- return 0;
+ } else {
+ err = security_sid_mls_copy(sksec->sid, peersid, &newsid);
+ if (err)
+ return err;
+ req->secid = newsid;
+ req->peer_secid = peersid;
}
- err = security_sid_mls_copy(sksec->sid, peersid, &newsid);
- if (err)
- return err;
-
- req->secid = newsid;
- req->peer_secid = peersid;
- return 0;
+ return selinux_netlbl_inet_conn_request(req, family);
}
static void selinux_inet_csk_clone(struct sock *newsk,
/* We don't need to take any sort of lock here as we are the only
* thread with access to newsksec */
- selinux_netlbl_sk_security_reset(newsksec, req->rsk_ops->family);
+ selinux_netlbl_inet_csk_clone(newsk, req->rsk_ops->family);
}
static void selinux_inet_conn_established(struct sock *sk, struct sk_buff *skb)
family = PF_INET;
selinux_skb_peerlbl_sid(skb, family, &sksec->peer_sid);
-
- selinux_netlbl_inet_conn_established(sk, family);
}
static void selinux_req_classify_flow(const struct request_sock *req,
return selinux_ip_output(skb, PF_INET);
}
-static int selinux_ip_postroute_iptables_compat(struct sock *sk,
- int ifindex,
- struct avc_audit_data *ad,
- u16 family, char *addrp)
-{
- int err;
- struct sk_security_struct *sksec = sk->sk_security;
- u16 sk_class;
- u32 netif_perm, node_perm, send_perm;
- u32 port_sid, node_sid, if_sid, sk_sid;
-
- sk_sid = sksec->sid;
- sk_class = sksec->sclass;
-
- switch (sk_class) {
- case SECCLASS_UDP_SOCKET:
- netif_perm = NETIF__UDP_SEND;
- node_perm = NODE__UDP_SEND;
- send_perm = UDP_SOCKET__SEND_MSG;
- break;
- case SECCLASS_TCP_SOCKET:
- netif_perm = NETIF__TCP_SEND;
- node_perm = NODE__TCP_SEND;
- send_perm = TCP_SOCKET__SEND_MSG;
- break;
- case SECCLASS_DCCP_SOCKET:
- netif_perm = NETIF__DCCP_SEND;
- node_perm = NODE__DCCP_SEND;
- send_perm = DCCP_SOCKET__SEND_MSG;
- break;
- default:
- netif_perm = NETIF__RAWIP_SEND;
- node_perm = NODE__RAWIP_SEND;
- send_perm = 0;
- break;
- }
-
- err = sel_netif_sid(ifindex, &if_sid);
- if (err)
- return err;
- err = avc_has_perm(sk_sid, if_sid, SECCLASS_NETIF, netif_perm, ad);
- return err;
-
- err = sel_netnode_sid(addrp, family, &node_sid);
- if (err)
- return err;
- err = avc_has_perm(sk_sid, node_sid, SECCLASS_NODE, node_perm, ad);
- if (err)
- return err;
-
- if (send_perm != 0)
- return 0;
-
- err = sel_netport_sid(sk->sk_protocol,
- ntohs(ad->u.net.dport), &port_sid);
- if (unlikely(err)) {
- printk(KERN_WARNING
- "SELinux: failure in"
- " selinux_ip_postroute_iptables_compat(),"
- " network port label not found\n");
- return err;
- }
- return avc_has_perm(sk_sid, port_sid, sk_class, send_perm, ad);
-}
-
static unsigned int selinux_ip_postroute_compat(struct sk_buff *skb,
int ifindex,
u16 family)
if (selinux_parse_skb(skb, &ad, &addrp, 0, &proto))
return NF_DROP;
- if (selinux_compat_net) {
- if (selinux_ip_postroute_iptables_compat(skb->sk, ifindex,
- &ad, family, addrp))
- return NF_DROP;
- } else if (selinux_secmark_enabled()) {
+ if (selinux_secmark_enabled())
if (avc_has_perm(sksec->sid, skb->secmark,
SECCLASS_PACKET, PACKET__SEND, &ad))
return NF_DROP;
- }
if (selinux_policycap_netpeer)
if (selinux_xfrm_postroute_last(sksec->sid, skb, &ad, proto))
* to the selinux_ip_postroute_compat() function to deal with the
* special handling. We do this in an attempt to keep this function
* as fast and as clean as possible. */
- if (selinux_compat_net || !selinux_policycap_netpeer)
+ if (!selinux_policycap_netpeer)
return selinux_ip_postroute_compat(skb, ifindex, family);
#ifdef CONFIG_XFRM
/* If skb->dst->xfrm is non-NULL then the packet is undergoing an IPsec
* when the packet is on it's final way out.
* NOTE: there appear to be some IPv6 multicast cases where skb->dst
* is NULL, in this case go ahead and apply access control. */
- if (skb->dst != NULL && skb->dst->xfrm != NULL)
+ if (skb_dst(skb) != NULL && skb_dst(skb)->xfrm != NULL)
return NF_ACCEPT;
#endif
secmark_active = selinux_secmark_enabled();
{
int err;
- err = secondary_ops->netlink_send(sk, skb);
+ err = cap_netlink_send(sk, skb);
if (err)
return err;
int err;
struct avc_audit_data ad;
- err = secondary_ops->netlink_recv(skb, capability);
+ err = cap_netlink_recv(skb, capability);
if (err)
return err;
static struct security_operations selinux_ops = {
.name = "selinux",
- .ptrace_may_access = selinux_ptrace_may_access,
+ .ptrace_access_check = selinux_ptrace_access_check,
.ptrace_traceme = selinux_ptrace_traceme,
.capget = selinux_capget,
.capset = selinux_capset,
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff