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net: switch sockets to ->read_iter/->write_iter 

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2014-11-28 19:40:50 -05:00
parent 6d65233020
commit 8ae5e030f3
1 changed files with 27 additions and 29 deletions
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56
net/socket.c
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@ -113,10 +113,8 @@ unsigned int sysctl_net_busy_read __read_mostly;
unsigned int sysctl_net_busy_poll __read_mostly; unsigned int sysctl_net_busy_poll __read_mostly;
#endif #endif
static ssize_t sock_aio_read(struct kiocb *iocb, const struct iovec *iov, static ssize_t sock_read_iter(struct kiocb *iocb, struct iov_iter *to);
unsigned long nr_segs, loff_t pos); static ssize_t sock_write_iter(struct kiocb *iocb, struct iov_iter *from);
static ssize_t sock_aio_write(struct kiocb *iocb, const struct iovec *iov,
unsigned long nr_segs, loff_t pos);
static int sock_mmap(struct file *file, struct vm_area_struct *vma); static int sock_mmap(struct file *file, struct vm_area_struct *vma);
static int sock_close(struct inode *inode, struct file *file); 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 = { static const struct file_operations socket_file_ops = {
.owner = THIS_MODULE, .owner = THIS_MODULE,
.llseek = no_llseek, .llseek = no_llseek,
.aio_read = sock_aio_read, .read = new_sync_read,
.aio_write = sock_aio_write, .write = new_sync_write,
.read_iter = sock_read_iter,
.write_iter = sock_write_iter,
.poll = sock_poll, .poll = sock_poll,
.unlocked_ioctl = sock_ioctl, .unlocked_ioctl = sock_ioctl,
#ifdef CONFIG_COMPAT #ifdef CONFIG_COMPAT
@ -845,49 +845,47 @@ static ssize_t sock_splice_read(struct file *file, loff_t *ppos,
return sock->ops->splice_read(sock, ppos, pipe, len, flags); return sock->ops->splice_read(sock, ppos, pipe, len, flags);
} }
static ssize_t sock_aio_read(struct kiocb *iocb, const struct iovec *iov, static ssize_t sock_read_iter(struct kiocb *iocb, struct iov_iter *to)
unsigned long nr_segs, loff_t pos)
{ {
struct file *file = iocb->ki_filp; struct file *file = iocb->ki_filp;
struct socket *sock = file->private_data; struct socket *sock = file->private_data;
struct msghdr msg; struct msghdr msg = {.msg_iter = *to};
ssize_t res;
if (pos != 0) if (file->f_flags & O_NONBLOCK)
msg.msg_flags = MSG_DONTWAIT;
if (iocb->ki_pos != 0)
return -ESPIPE; return -ESPIPE;
if (iocb->ki_nbytes == 0) /* Match SYS5 behaviour */ if (iocb->ki_nbytes == 0) /* Match SYS5 behaviour */
return 0; return 0;
msg.msg_name = NULL; res = __sock_recvmsg(iocb, sock, &msg,
msg.msg_namelen = 0; iocb->ki_nbytes, msg.msg_flags);
msg.msg_control = NULL; *to = msg.msg_iter;
msg.msg_controllen = 0; return res;
iov_iter_init(&msg.msg_iter, READ, iov, nr_segs, iocb->ki_nbytes);
msg.msg_flags = (file->f_flags & O_NONBLOCK) ? MSG_DONTWAIT : 0;
return __sock_recvmsg(iocb, sock, &msg, iocb->ki_nbytes, msg.msg_flags);
} }
static ssize_t sock_aio_write(struct kiocb *iocb, const struct iovec *iov, static ssize_t sock_write_iter(struct kiocb *iocb, struct iov_iter *from)
unsigned long nr_segs, loff_t pos)
{ {
struct file *file = iocb->ki_filp; struct file *file = iocb->ki_filp;
struct socket *sock = file->private_data; struct socket *sock = file->private_data;
struct msghdr msg; struct msghdr msg = {.msg_iter = *from};
ssize_t res;
if (pos != 0) if (iocb->ki_pos != 0)
return -ESPIPE; return -ESPIPE;
msg.msg_name = NULL; if (file->f_flags & O_NONBLOCK)
msg.msg_namelen = 0; msg.msg_flags = MSG_DONTWAIT;
msg.msg_control = NULL;
msg.msg_controllen = 0;
iov_iter_init(&msg.msg_iter, WRITE, iov, nr_segs, iocb->ki_nbytes);
msg.msg_flags = (file->f_flags & O_NONBLOCK) ? MSG_DONTWAIT : 0;
if (sock->type == SOCK_SEQPACKET) if (sock->type == SOCK_SEQPACKET)
msg.msg_flags |= MSG_EOR; msg.msg_flags |= MSG_EOR;
return __sock_sendmsg(iocb, sock, &msg, iocb->ki_nbytes); res = __sock_sendmsg(iocb, sock, &msg, iocb->ki_nbytes);
*from = msg.msg_iter;
return res;
} }
/* /*