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Diffstat (limited to 'net/socket.c')
-rw-r--r--net/socket.c55
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;
}