提交 d8725c86 编写于 作者: A Al Viro

get rid of the size argument of sock_sendmsg()

it's equal to iov_iter_count(&msg->msg_iter) in all cases
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
上级 6aa24814
......@@ -211,7 +211,7 @@ int sock_create(int family, int type, int proto, struct socket **res);
int sock_create_kern(int family, int type, int proto, struct socket **res);
int sock_create_lite(int family, int type, int proto, struct socket **res);
void sock_release(struct socket *sock);
int sock_sendmsg(struct socket *sock, struct msghdr *msg, size_t len);
int sock_sendmsg(struct socket *sock, struct msghdr *msg);
int sock_recvmsg(struct socket *sock, struct msghdr *msg, size_t size,
int flags);
struct file *sock_alloc_file(struct socket *sock, int flags, const char *dname);
......
......@@ -610,17 +610,19 @@ void __sock_tx_timestamp(const struct sock *sk, __u8 *tx_flags)
}
EXPORT_SYMBOL(__sock_tx_timestamp);
static inline int sock_sendmsg_nosec(struct socket *sock, struct msghdr *msg,
size_t size)
static inline int sock_sendmsg_nosec(struct socket *sock, struct msghdr *msg)
{
return sock->ops->sendmsg(sock, msg, size);
int ret = sock->ops->sendmsg(sock, msg, iov_iter_count(&msg->msg_iter));
BUG_ON(ret == -EIOCBQUEUED);
return ret;
}
int sock_sendmsg(struct socket *sock, struct msghdr *msg, size_t size)
int sock_sendmsg(struct socket *sock, struct msghdr *msg)
{
int err = security_socket_sendmsg(sock, msg, size);
int err = security_socket_sendmsg(sock, msg,
iov_iter_count(&msg->msg_iter));
return err ?: sock_sendmsg_nosec(sock, msg, size);
return err ?: sock_sendmsg_nosec(sock, msg);
}
EXPORT_SYMBOL(sock_sendmsg);
......@@ -628,7 +630,7 @@ int kernel_sendmsg(struct socket *sock, struct msghdr *msg,
struct kvec *vec, size_t num, size_t size)
{
iov_iter_kvec(&msg->msg_iter, WRITE | ITER_KVEC, vec, num, size);
return sock_sendmsg(sock, msg, size);
return sock_sendmsg(sock, msg);
}
EXPORT_SYMBOL(kernel_sendmsg);
......@@ -819,7 +821,7 @@ static ssize_t sock_write_iter(struct kiocb *iocb, struct iov_iter *from)
if (sock->type == SOCK_SEQPACKET)
msg.msg_flags |= MSG_EOR;
res = sock_sendmsg(sock, &msg, iov_iter_count(from));
res = sock_sendmsg(sock, &msg);
*from = msg.msg_iter;
return res;
}
......@@ -1657,7 +1659,7 @@ SYSCALL_DEFINE6(sendto, int, fd, void __user *, buff, size_t, len,
if (sock->file->f_flags & O_NONBLOCK)
flags |= MSG_DONTWAIT;
msg.msg_flags = flags;
err = sock_sendmsg(sock, &msg, iov_iter_count(&msg.msg_iter));
err = sock_sendmsg(sock, &msg);
out_put:
fput_light(sock->file, fput_needed);
......@@ -1892,7 +1894,7 @@ static int ___sys_sendmsg(struct socket *sock, struct user_msghdr __user *msg,
__attribute__ ((aligned(sizeof(__kernel_size_t))));
/* 20 is size of ipv6_pktinfo */
unsigned char *ctl_buf = ctl;
int ctl_len, total_len;
int ctl_len;
ssize_t err;
msg_sys->msg_name = &address;
......@@ -1903,7 +1905,6 @@ static int ___sys_sendmsg(struct socket *sock, struct user_msghdr __user *msg,
err = copy_msghdr_from_user(msg_sys, msg, NULL, &iov);
if (err < 0)
return err;
total_len = iov_iter_count(&msg_sys->msg_iter);
err = -ENOBUFS;
......@@ -1950,10 +1951,10 @@ static int ___sys_sendmsg(struct socket *sock, struct user_msghdr __user *msg,
used_address->name_len == msg_sys->msg_namelen &&
!memcmp(&used_address->name, msg_sys->msg_name,
used_address->name_len)) {
err = sock_sendmsg_nosec(sock, msg_sys, total_len);
err = sock_sendmsg_nosec(sock, msg_sys);
goto out_freectl;
}
err = sock_sendmsg(sock, msg_sys, total_len);
err = sock_sendmsg(sock, msg_sys);
/*
* If this is sendmmsg() and sending to current destination address was
* successful, remember it.
......
......@@ -257,7 +257,7 @@ static int svc_sendto(struct svc_rqst *rqstp, struct xdr_buf *xdr)
svc_set_cmsg_data(rqstp, cmh);
if (sock_sendmsg(sock, &msg, 0) < 0)
if (sock_sendmsg(sock, &msg) < 0)
goto out;
}
......
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