diff options
Diffstat (limited to 'net/socket.c')
| -rw-r--r-- | net/socket.c | 55 |
1 files changed, 28 insertions, 27 deletions
diff --git a/net/socket.c b/net/socket.c index 74784dfe8e5b..7651de008502 100644 --- a/net/socket.c +++ b/net/socket.c @@ -112,6 +112,9 @@ static long compat_sock_ioctl(struct file *file, static int sock_fasync(int fd, struct file *filp, int on); static ssize_t sock_sendpage(struct file *file, struct page *page, int offset, size_t size, loff_t *ppos, int more); +static ssize_t sock_splice_read(struct file *file, loff_t *ppos, + struct pipe_inode_info *pipe, size_t len, + unsigned int flags); /* * Socket files have a set of 'special' operations as well as the generic file ones. These don't appear @@ -134,6 +137,7 @@ static const struct file_operations socket_file_ops = { .fasync = sock_fasync, .sendpage = sock_sendpage, .splice_write = generic_splice_sendpage, + .splice_read = sock_splice_read, }; /* @@ -691,6 +695,15 @@ static ssize_t sock_sendpage(struct file *file, struct page *page, return sock->ops->sendpage(sock, page, offset, size, flags); } +static ssize_t sock_splice_read(struct file *file, loff_t *ppos, + struct pipe_inode_info *pipe, size_t len, + unsigned int flags) +{ + struct socket *sock = file->private_data; + + return sock->ops->splice_read(sock, ppos, pipe, len, flags); +} + static struct sock_iocb *alloc_sock_iocb(struct kiocb *iocb, struct sock_iocb *siocb) { @@ -1057,20 +1070,19 @@ int sock_wake_async(struct socket *sock, int how, int band) if (!sock || !sock->fasync_list) return -1; switch (how) { - case 1: - + case SOCK_WAKE_WAITD: if (test_bit(SOCK_ASYNC_WAITDATA, &sock->flags)) break; goto call_kill; - case 2: + case SOCK_WAKE_SPACE: if (!test_and_clear_bit(SOCK_ASYNC_NOSPACE, &sock->flags)) break; /* fall through */ - case 0: + case SOCK_WAKE_IO: call_kill: __kill_fasync(sock->fasync_list, SIGIO, band); break; - case 3: + case SOCK_WAKE_URG: __kill_fasync(sock->fasync_list, SIGURG, band); } return 0; @@ -1353,17 +1365,17 @@ asmlinkage long sys_bind(int fd, struct sockaddr __user *umyaddr, int addrlen) * ready for listening. */ -int sysctl_somaxconn __read_mostly = SOMAXCONN; - asmlinkage long sys_listen(int fd, int backlog) { struct socket *sock; int err, fput_needed; + int somaxconn; sock = sockfd_lookup_light(fd, &err, &fput_needed); if (sock) { - if ((unsigned)backlog > sysctl_somaxconn) - backlog = sysctl_somaxconn; + somaxconn = sock->sk->sk_net->sysctl_somaxconn; + if ((unsigned)backlog > somaxconn) + backlog = somaxconn; err = security_socket_listen(sock, backlog); if (!err) @@ -1581,16 +1593,11 @@ asmlinkage long sys_sendto(int fd, void __user *buff, size_t len, struct msghdr msg; struct iovec iov; int fput_needed; - struct file *sock_file; - sock_file = fget_light(fd, &fput_needed); - err = -EBADF; - if (!sock_file) + sock = sockfd_lookup_light(fd, &err, &fput_needed); + if (!sock) goto out; - sock = sock_from_file(sock_file, &err); - if (!sock) - goto out_put; iov.iov_base = buff; iov.iov_len = len; msg.msg_name = NULL; @@ -1612,7 +1619,7 @@ asmlinkage long sys_sendto(int fd, void __user *buff, size_t len, err = sock_sendmsg(sock, &msg, len); out_put: - fput_light(sock_file, fput_needed); + fput_light(sock->file, fput_needed); out: return err; } @@ -1641,17 +1648,11 @@ asmlinkage long sys_recvfrom(int fd, void __user *ubuf, size_t size, struct msghdr msg; char address[MAX_SOCK_ADDR]; int err, err2; - struct file *sock_file; int fput_needed; - sock_file = fget_light(fd, &fput_needed); - err = -EBADF; - if (!sock_file) - goto out; - - sock = sock_from_file(sock_file, &err); + sock = sockfd_lookup_light(fd, &err, &fput_needed); if (!sock) - goto out_put; + goto out; msg.msg_control = NULL; msg.msg_controllen = 0; @@ -1670,8 +1671,8 @@ asmlinkage long sys_recvfrom(int fd, void __user *ubuf, size_t size, if (err2 < 0) err = err2; } -out_put: - fput_light(sock_file, fput_needed); + + fput_light(sock->file, fput_needed); out: return err; } |