1 files changed, 52 insertions, 11 deletions

diff --git a/net/socket.c b/net/socket.c
index 9566e57ac7f5..98a8f67abbfc 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -261,8 +261,7 @@ static void init_once(void *foo, struct kmem_cache *cachep, unsigned long flags)
 {
 	struct socket_alloc *ei = (struct socket_alloc *)foo;
 
-	if ((flags & (SLAB_CTOR_VERIFY|SLAB_CTOR_CONSTRUCTOR))
-	    == SLAB_CTOR_CONSTRUCTOR)
+	if (flags & SLAB_CTOR_CONSTRUCTOR)
 		inode_init_once(&ei->vfs_inode);
 }
 
@@ -314,8 +313,19 @@ static int sockfs_delete_dentry(struct dentry *dentry)
 	dentry->d_flags |= DCACHE_UNHASHED;
 	return 0;
 }
+
+/*
+ * sockfs_dname() is called from d_path().
+ */
+static char *sockfs_dname(struct dentry *dentry, char *buffer, int buflen)
+{
+	return dynamic_dname(dentry, buffer, buflen, "socket:[%lu]",
+				dentry->d_inode->i_ino);
+}
+
 static struct dentry_operations sockfs_dentry_operations = {
 	.d_delete = sockfs_delete_dentry,
+	.d_dname  = sockfs_dname,
 };
 
 /*
@@ -355,14 +365,9 @@ static int sock_alloc_fd(struct file **filep)
 
 static int sock_attach_fd(struct socket *sock, struct file *file)
 {
-	struct qstr this;
-	char name[32];
-
-	this.len = sprintf(name, "[%lu]", SOCK_INODE(sock)->i_ino);
-	this.name = name;
-	this.hash = 0;
+	struct qstr name = { .name = "" };
 
-	file->f_path.dentry = d_alloc(sock_mnt->mnt_sb->s_root, &this);
+	file->f_path.dentry = d_alloc(sock_mnt->mnt_sb->s_root, &name);
 	if (unlikely(!file->f_path.dentry))
 		return -ENOMEM;
 
@@ -585,6 +590,37 @@ int kernel_sendmsg(struct socket *sock, struct msghdr *msg,
 	return result;
 }
 
+/*
+ * called from sock_recv_timestamp() if sock_flag(sk, SOCK_RCVTSTAMP)
+ */
+void __sock_recv_timestamp(struct msghdr *msg, struct sock *sk,
+	struct sk_buff *skb)
+{
+	ktime_t kt = skb->tstamp;
+
+	if (!sock_flag(sk, SOCK_RCVTSTAMPNS)) {
+		struct timeval tv;
+		/* Race occurred between timestamp enabling and packet
+		   receiving.  Fill in the current time for now. */
+		if (kt.tv64 == 0)
+			kt = ktime_get_real();
+		skb->tstamp = kt;
+		tv = ktime_to_timeval(kt);
+		put_cmsg(msg, SOL_SOCKET, SCM_TIMESTAMP, sizeof(tv), &tv);
+	} else {
+		struct timespec ts;
+		/* Race occurred between timestamp enabling and packet
+		   receiving.  Fill in the current time for now. */
+		if (kt.tv64 == 0)
+			kt = ktime_get_real();
+		skb->tstamp = kt;
+		ts = ktime_to_timespec(kt);
+		put_cmsg(msg, SOL_SOCKET, SCM_TIMESTAMPNS, sizeof(ts), &ts);
+	}
+}
+
+EXPORT_SYMBOL_GPL(__sock_recv_timestamp);
+
 static inline int __sock_recvmsg(struct kiocb *iocb, struct socket *sock,
 				 struct msghdr *msg, size_t size, int flags)
 {
@@ -1292,7 +1328,7 @@ asmlinkage long sys_bind(int fd, struct sockaddr __user *umyaddr, int addrlen)
 	int err, fput_needed;
 
 	sock = sockfd_lookup_light(fd, &err, &fput_needed);
-	if(sock) {
+	if (sock) {
 		err = move_addr_to_kernel(umyaddr, addrlen, address);
 		if (err >= 0) {
 			err = security_socket_bind(sock,
@@ -1381,7 +1417,7 @@ asmlinkage long sys_accept(int fd, struct sockaddr __user *upeer_sockaddr,
 
 	err = sock_attach_fd(newsock, newfile);
 	if (err < 0)
-		goto out_fd;
+		goto out_fd_simple;
 
 	err = security_socket_accept(sock, newsock);
 	if (err)
@@ -1414,6 +1450,11 @@ out_put:
 	fput_light(sock->file, fput_needed);
 out:
 	return err;
+out_fd_simple:
+	sock_release(newsock);
+	put_filp(newfile);
+	put_unused_fd(newfd);
+	goto out_put;
 out_fd:
 	fput(newfile);
 	put_unused_fd(newfd);