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io_uring: ensure async punted connect requests copy data

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Just like commit f67676d160 for read/write requests, this one ensures
that the sockaddr data has been copied for IORING_OP_CONNECT if we need
to punt the request to async context.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Jens Axboe 2019-12-02 16:28:46 -07:00
parent 03b1230ca1
commit f499a021ea
3 changed files with 57 additions and 15 deletions
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16
net/socket.c
View file

@ -1826,26 +1826,22 @@ SYSCALL_DEFINE3(accept, int, fd, struct sockaddr __user *, upeer_sockaddr,
* include the -EINPROGRESS status for such sockets.
*/
int __sys_connect_file(struct file *file, struct sockaddr __user *uservaddr,
int __sys_connect_file(struct file *file, struct sockaddr_storage *address,
int addrlen, int file_flags)
{
struct socket *sock;
struct sockaddr_storage address;
int err;
sock = sock_from_file(file, &err);
if (!sock)
goto out;
err = move_addr_to_kernel(uservaddr, addrlen, &address);
if (err < 0)
goto out;
err =
security_socket_connect(sock, (struct sockaddr *)&address, addrlen);
security_socket_connect(sock, (struct sockaddr *)address, addrlen);
if (err)
goto out;
err = sock->ops->connect(sock, (struct sockaddr *)&address, addrlen,
err = sock->ops->connect(sock, (struct sockaddr *)address, addrlen,
sock->file->f_flags | file_flags);
out:
return err;
@ -1858,7 +1854,11 @@ int __sys_connect(int fd, struct sockaddr __user *uservaddr, int addrlen)
f = fdget(fd);
if (f.file) {
ret = __sys_connect_file(f.file, uservaddr, addrlen, 0);
struct sockaddr_storage address;
ret = move_addr_to_kernel(uservaddr, addrlen, &address);
if (!ret)
ret = __sys_connect_file(f.file, &address, addrlen, 0);
if (f.flags)
fput(f.file);
}