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authorAl Viro <viro@zeniv.linux.org.uk>2014-11-28 19:40:50 -0500
committerAl Viro <viro@zeniv.linux.org.uk>2015-02-04 01:34:15 -0500
commit8ae5e030f30e50a81df1b269d5a5c32d023aa66d (patch)
tree4aa306c3e26eb3f6a46084c3bced217f28e1c94e /net/socket.c
parent6d65233020765ea25541952276217d49e3ecbf9e (diff)
downloadlinux-8ae5e030f30e50a81df1b269d5a5c32d023aa66d.tar.bz2
net: switch sockets to ->read_iter/->write_iter
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'net/socket.c')
-rw-r--r--net/socket.c56
1 files changed, 27 insertions, 29 deletions
diff --git a/net/socket.c b/net/socket.c
index 4d08b50cad65..bbedbfcb42c2 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
@@ -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);
}
-static ssize_t sock_aio_read(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)
{
struct file *file = iocb->ki_filp;
struct socket *sock = file->private_data;
- struct msghdr msg;
+ struct msghdr msg = {.msg_iter = *to};
+ ssize_t res;
+
+ if (file->f_flags & O_NONBLOCK)
+ msg.msg_flags = MSG_DONTWAIT;
- if (pos != 0)
+ if (iocb->ki_pos != 0)
return -ESPIPE;
if (iocb->ki_nbytes == 0) /* Match SYS5 behaviour */
return 0;
- 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, 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);
+ res = __sock_recvmsg(iocb, sock, &msg,
+ iocb->ki_nbytes, msg.msg_flags);
+ *to = msg.msg_iter;
+ return res;
}
-static ssize_t sock_aio_write(struct kiocb *iocb, const struct iovec *iov,
- unsigned long nr_segs, loff_t pos)
+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;
- struct msghdr msg;
+ struct msghdr msg = {.msg_iter = *from};
+ ssize_t res;
- if (pos != 0)
+ if (iocb->ki_pos != 0)
return -ESPIPE;
- 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, iocb->ki_nbytes);
- msg.msg_flags = (file->f_flags & O_NONBLOCK) ? MSG_DONTWAIT : 0;
+ if (file->f_flags & O_NONBLOCK)
+ msg.msg_flags = MSG_DONTWAIT;
+
if (sock->type == SOCK_SEQPACKET)
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;
}
/*