put iov_iter into msghdr
Note that the code _using_ ->msg_iter at that point will be very
unhappy with anything other than unshifted iovec-backed iov_iter.
We still need to convert users to proper primitives.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/net/compat.c b/net/compat.c
index 062f157..3236b41 100644
--- a/net/compat.c
+++ b/net/compat.c
@@ -37,13 +37,14 @@
struct iovec **iov)
{
compat_uptr_t uaddr, uiov, tmp3;
+ compat_size_t nr_segs;
ssize_t err;
if (!access_ok(VERIFY_READ, umsg, sizeof(*umsg)) ||
__get_user(uaddr, &umsg->msg_name) ||
__get_user(kmsg->msg_namelen, &umsg->msg_namelen) ||
__get_user(uiov, &umsg->msg_iov) ||
- __get_user(kmsg->msg_iovlen, &umsg->msg_iovlen) ||
+ __get_user(nr_segs, &umsg->msg_iovlen) ||
__get_user(tmp3, &umsg->msg_control) ||
__get_user(kmsg->msg_controllen, &umsg->msg_controllen) ||
__get_user(kmsg->msg_flags, &umsg->msg_flags))
@@ -68,14 +69,15 @@
kmsg->msg_namelen = 0;
}
- if (kmsg->msg_iovlen > UIO_MAXIOV)
+ if (nr_segs > UIO_MAXIOV)
return -EMSGSIZE;
err = compat_rw_copy_check_uvector(save_addr ? READ : WRITE,
- compat_ptr(uiov), kmsg->msg_iovlen,
+ compat_ptr(uiov), nr_segs,
UIO_FASTIOV, *iov, iov);
if (err >= 0)
- kmsg->msg_iov = *iov;
+ iov_iter_init(&kmsg->msg_iter, save_addr ? READ : WRITE,
+ *iov, nr_segs, err);
return err;
}