#include <asm/uaccess.h>
#include <linux/skbuff.h>
#include <linux/netdevice.h>
+#include <net/net_namespace.h>
#include <net/sock.h>
#include <net/tcp_states.h>
#include <net/af_unix.h>
int sysctl_unix_max_dgram_qlen __read_mostly = 10;
-struct hlist_head unix_socket_table[UNIX_HASH_SIZE + 1];
-DEFINE_SPINLOCK(unix_table_lock);
+static struct hlist_head unix_socket_table[UNIX_HASH_SIZE + 1];
+static DEFINE_SPINLOCK(unix_table_lock);
static atomic_t unix_nr_socks = ATOMIC_INIT(0);
#define unix_sockets_unbound (&unix_socket_table[UNIX_HASH_SIZE])
#define UNIX_ABSTRACT(sk) (unix_sk(sk)->addr->hash != UNIX_HASH_SIZE)
+static struct sock *first_unix_socket(int *i)
+{
+ for (*i = 0; *i <= UNIX_HASH_SIZE; (*i)++) {
+ if (!hlist_empty(&unix_socket_table[*i]))
+ return __sk_head(&unix_socket_table[*i]);
+ }
+ return NULL;
+}
+
+static struct sock *next_unix_socket(int *i, struct sock *s)
+{
+ struct sock *next = sk_next(s);
+ /* More in this chain? */
+ if (next)
+ return next;
+ /* Look for next non-empty chain. */
+ for ((*i)++; *i <= UNIX_HASH_SIZE; (*i)++) {
+ if (!hlist_empty(&unix_socket_table[*i]))
+ return __sk_head(&unix_socket_table[*i]);
+ }
+ return NULL;
+}
+
+#define forall_unix_sockets(i, s) \
+ for (s = first_unix_socket(&(i)); s; s = next_unix_socket(&(i),(s)))
+
#ifdef CONFIG_SECURITY_NETWORK
static void unix_get_secdata(struct scm_cookie *scm, struct sk_buff *skb)
{
read_lock(&sk->sk_callback_lock);
if (unix_writable(sk)) {
if (sk->sk_sleep && waitqueue_active(sk->sk_sleep))
- wake_up_interruptible(sk->sk_sleep);
+ wake_up_interruptible_sync(sk->sk_sleep);
sk_wake_async(sk, 2, POLL_OUT);
}
read_unlock(&sk->sk_callback_lock);
sk->sk_max_ack_backlog = backlog;
sk->sk_state = TCP_LISTEN;
/* set credentials so connect can copy them */
- sk->sk_peercred.pid = current->tgid;
+ sk->sk_peercred.pid = task_tgid_vnr(current);
sk->sk_peercred.uid = current->euid;
sk->sk_peercred.gid = current->egid;
err = 0;
*/
static struct lock_class_key af_unix_sk_receive_queue_lock_key;
-static struct sock * unix_create1(struct socket *sock)
+static struct sock * unix_create1(struct net *net, struct socket *sock)
{
struct sock *sk = NULL;
struct unix_sock *u;
if (atomic_read(&unix_nr_socks) >= 2*get_max_files())
goto out;
- sk = sk_alloc(PF_UNIX, GFP_KERNEL, &unix_proto, 1);
+ sk = sk_alloc(net, PF_UNIX, GFP_KERNEL, &unix_proto, 1);
if (!sk)
goto out;
return sk;
}
-static int unix_create(struct socket *sock, int protocol)
+static int unix_create(struct net *net, struct socket *sock, int protocol)
{
+ if (net != &init_net)
+ return -EAFNOSUPPORT;
+
if (protocol && protocol != PF_UNIX)
return -EPROTONOSUPPORT;
return -ESOCKTNOSUPPORT;
}
- return unix_create1(sock) ? 0 : -ENOMEM;
+ return unix_create1(net, sock) ? 0 : -ENOMEM;
}
static int unix_release(struct socket *sock)
err = -ENOMEM;
/* create new sock for complete connection */
- newsk = unix_create1(NULL);
+ newsk = unix_create1(sk->sk_net, NULL);
if (newsk == NULL)
goto out;
unix_peer(newsk) = sk;
newsk->sk_state = TCP_ESTABLISHED;
newsk->sk_type = sk->sk_type;
- newsk->sk_peercred.pid = current->tgid;
+ newsk->sk_peercred.pid = task_tgid_vnr(current);
newsk->sk_peercred.uid = current->euid;
newsk->sk_peercred.gid = current->egid;
newu = unix_sk(newsk);
sock_hold(skb);
unix_peer(ska)=skb;
unix_peer(skb)=ska;
- ska->sk_peercred.pid = skb->sk_peercred.pid = current->tgid;
+ ska->sk_peercred.pid = skb->sk_peercred.pid = task_tgid_vnr(current);
ska->sk_peercred.uid = skb->sk_peercred.uid = current->euid;
ska->sk_peercred.gid = skb->sk_peercred.gid = current->egid;
if (!skb)
goto out_unlock;
- wake_up_interruptible(&u->peer_wait);
+ wake_up_interruptible_sync(&u->peer_wait);
if (msg->msg_name)
unix_copy_addr(msg, skb->sk);
static int unix_seq_open(struct inode *inode, struct file *file)
{
- struct seq_file *seq;
- int rc = -ENOMEM;
- int *iter = kmalloc(sizeof(int), GFP_KERNEL);
-
- if (!iter)
- goto out;
-
- rc = seq_open(file, &unix_seq_ops);
- if (rc)
- goto out_kfree;
-
- seq = file->private_data;
- seq->private = iter;
- *iter = 0;
-out:
- return rc;
-out_kfree:
- kfree(iter);
- goto out;
+ return seq_open_private(file, &unix_seq_ops, sizeof(int));
}
static const struct file_operations unix_seq_fops = {
sock_register(&unix_family_ops);
#ifdef CONFIG_PROC_FS
- proc_net_fops_create("unix", 0, &unix_seq_fops);
+ proc_net_fops_create(&init_net, "unix", 0, &unix_seq_fops);
#endif
unix_sysctl_register();
out:
{
sock_unregister(PF_UNIX);
unix_sysctl_unregister();
- proc_net_remove("unix");
+ proc_net_remove(&init_net, "unix");
proto_unregister(&unix_proto);
}