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Diffstat (limited to 'net/socket.c')
-rw-r--r--net/socket.c126
1 files changed, 30 insertions, 96 deletions
diff --git a/net/socket.c b/net/socket.c
index a2c33a4dc7b..bbedbfcb42c 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -113,10 +113,8 @@ unsigned int sysctl_net_busy_read __read_mostly;
unsigned int sysctl_net_busy_poll __read_mostly;
#endif
-static ssize_t sock_aio_read(struct kiocb *iocb, const struct iovec *iov,
- unsigned long nr_segs, loff_t pos);
-static ssize_t sock_aio_write(struct kiocb *iocb, const struct iovec *iov,
- unsigned long nr_segs, loff_t pos);
+static ssize_t sock_read_iter(struct kiocb *iocb, struct iov_iter *to);
+static ssize_t sock_write_iter(struct kiocb *iocb, struct iov_iter *from);
static int sock_mmap(struct file *file, struct vm_area_struct *vma);
static int sock_close(struct inode *inode, struct file *file);
@@ -142,8 +140,10 @@ static ssize_t sock_splice_read(struct file *file, loff_t *ppos,
static const struct file_operations socket_file_ops = {
.owner = THIS_MODULE,
.llseek = no_llseek,
- .aio_read = sock_aio_read,
- .aio_write = sock_aio_write,
+ .read = new_sync_read,
+ .write = new_sync_write,
+ .read_iter = sock_read_iter,
+ .write_iter = sock_write_iter,
.poll = sock_poll,
.unlocked_ioctl = sock_ioctl,
#ifdef CONFIG_COMPAT
@@ -613,13 +613,6 @@ EXPORT_SYMBOL(__sock_tx_timestamp);
static inline int __sock_sendmsg_nosec(struct kiocb *iocb, struct socket *sock,
struct msghdr *msg, size_t size)
{
- struct sock_iocb *si = kiocb_to_siocb(iocb);
-
- si->sock = sock;
- si->scm = NULL;
- si->msg = msg;
- si->size = size;
-
return sock->ops->sendmsg(iocb, sock, msg, size);
}
@@ -635,11 +628,9 @@ static int do_sock_sendmsg(struct socket *sock, struct msghdr *msg,
size_t size, bool nosec)
{
struct kiocb iocb;
- struct sock_iocb siocb;
int ret;
init_sync_kiocb(&iocb, NULL);
- iocb.private = &siocb;
ret = nosec ? __sock_sendmsg_nosec(&iocb, sock, msg, size) :
__sock_sendmsg(&iocb, sock, msg, size);
if (-EIOCBQUEUED == ret)
@@ -756,14 +747,6 @@ EXPORT_SYMBOL_GPL(__sock_recv_ts_and_drops);
static inline int __sock_recvmsg_nosec(struct kiocb *iocb, struct socket *sock,
struct msghdr *msg, size_t size, int flags)
{
- struct sock_iocb *si = kiocb_to_siocb(iocb);
-
- si->sock = sock;
- si->scm = NULL;
- si->msg = msg;
- si->size = size;
- si->flags = flags;
-
return sock->ops->recvmsg(iocb, sock, msg, size, flags);
}
@@ -779,11 +762,9 @@ int sock_recvmsg(struct socket *sock, struct msghdr *msg,
size_t size, int flags)
{
struct kiocb iocb;
- struct sock_iocb siocb;
int ret;
init_sync_kiocb(&iocb, NULL);
- iocb.private = &siocb;
ret = __sock_recvmsg(&iocb, sock, msg, size, flags);
if (-EIOCBQUEUED == ret)
ret = wait_on_sync_kiocb(&iocb);
@@ -795,11 +776,9 @@ static int sock_recvmsg_nosec(struct socket *sock, struct msghdr *msg,
size_t size, int flags)
{
struct kiocb iocb;
- struct sock_iocb siocb;
int ret;
init_sync_kiocb(&iocb, NULL);
- iocb.private = &siocb;
ret = __sock_recvmsg_nosec(&iocb, sock, msg, size, flags);
if (-EIOCBQUEUED == ret)
ret = wait_on_sync_kiocb(&iocb);
@@ -866,92 +845,47 @@ static ssize_t sock_splice_read(struct file *file, loff_t *ppos,
return sock->ops->splice_read(sock, ppos, pipe, len, flags);
}
-static struct sock_iocb *alloc_sock_iocb(struct kiocb *iocb,
- struct sock_iocb *siocb)
-{
- if (!is_sync_kiocb(iocb))
- BUG();
-
- siocb->kiocb = iocb;
- iocb->private = siocb;
- return siocb;
-}
-
-static ssize_t do_sock_read(struct msghdr *msg, struct kiocb *iocb,
- struct file *file, const struct iovec *iov,
- unsigned long nr_segs)
+static ssize_t sock_read_iter(struct kiocb *iocb, struct iov_iter *to)
{
+ struct file *file = iocb->ki_filp;
struct socket *sock = file->private_data;
- size_t size = 0;
- int i;
-
- for (i = 0; i < nr_segs; i++)
- size += iov[i].iov_len;
+ struct msghdr msg = {.msg_iter = *to};
+ ssize_t res;
- msg->msg_name = NULL;
- msg->msg_namelen = 0;
- msg->msg_control = NULL;
- msg->msg_controllen = 0;
- iov_iter_init(&msg->msg_iter, READ, iov, nr_segs, size);
- msg->msg_flags = (file->f_flags & O_NONBLOCK) ? MSG_DONTWAIT : 0;
+ if (file->f_flags & O_NONBLOCK)
+ msg.msg_flags = MSG_DONTWAIT;
- return __sock_recvmsg(iocb, sock, msg, size, msg->msg_flags);
-}
-
-static ssize_t sock_aio_read(struct kiocb *iocb, const struct iovec *iov,
- unsigned long nr_segs, loff_t pos)
-{
- struct sock_iocb siocb, *x;
-
- if (pos != 0)
+ if (iocb->ki_pos != 0)
return -ESPIPE;
if (iocb->ki_nbytes == 0) /* Match SYS5 behaviour */
return 0;
-
- x = alloc_sock_iocb(iocb, &siocb);
- if (!x)
- return -ENOMEM;
- return do_sock_read(&x->async_msg, iocb, iocb->ki_filp, iov, nr_segs);
+ res = __sock_recvmsg(iocb, sock, &msg,
+ iocb->ki_nbytes, msg.msg_flags);
+ *to = msg.msg_iter;
+ return res;
}
-static ssize_t do_sock_write(struct msghdr *msg, struct kiocb *iocb,
- struct file *file, const struct iovec *iov,
- unsigned long nr_segs)
+static ssize_t sock_write_iter(struct kiocb *iocb, struct iov_iter *from)
{
+ struct file *file = iocb->ki_filp;
struct socket *sock = file->private_data;
- size_t size = 0;
- int i;
-
- for (i = 0; i < nr_segs; i++)
- size += iov[i].iov_len;
-
- msg->msg_name = NULL;
- msg->msg_namelen = 0;
- msg->msg_control = NULL;
- msg->msg_controllen = 0;
- iov_iter_init(&msg->msg_iter, WRITE, iov, nr_segs, size);
- msg->msg_flags = (file->f_flags & O_NONBLOCK) ? MSG_DONTWAIT : 0;
- if (sock->type == SOCK_SEQPACKET)
- msg->msg_flags |= MSG_EOR;
-
- return __sock_sendmsg(iocb, sock, msg, size);
-}
+ struct msghdr msg = {.msg_iter = *from};
+ ssize_t res;
-static ssize_t sock_aio_write(struct kiocb *iocb, const struct iovec *iov,
- unsigned long nr_segs, loff_t pos)
-{
- struct sock_iocb siocb, *x;
-
- if (pos != 0)
+ if (iocb->ki_pos != 0)
return -ESPIPE;
- x = alloc_sock_iocb(iocb, &siocb);
- if (!x)
- return -ENOMEM;
+ if (file->f_flags & O_NONBLOCK)
+ msg.msg_flags = MSG_DONTWAIT;
+
+ if (sock->type == SOCK_SEQPACKET)
+ msg.msg_flags |= MSG_EOR;
- return do_sock_write(&x->async_msg, iocb, iocb->ki_filp, iov, nr_segs);
+ res = __sock_sendmsg(iocb, sock, &msg, iocb->ki_nbytes);
+ *from = msg.msg_iter;
+ return res;
}
/*
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-13 07:39:56 +0000