RDMA/uverbs: Use uverbs_response() for remaining response copying
This function properly truncates and zero-fills the response which is the standard used by the ioctl uAPI when working with user data. Signed-off-by: Jason Gunthorpe <jgg@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Jason Gunthorpe
Doug Ledford
parent
931373a118
commit
9a0738575f
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@ -162,10 +162,9 @@ static int ib_uverbs_get_context(struct uverbs_attr_bundle *attrs,
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goto err_fd;
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}
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if (copy_to_user(u64_to_user_ptr(cmd.response), &resp, sizeof resp)) {
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ret = -EFAULT;
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ret = uverbs_response(attrs, &resp, sizeof(resp));
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if (ret)
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goto err_file;
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}
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fd_install(resp.async_fd, filp);
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@ -263,10 +262,7 @@ static int ib_uverbs_query_device(struct uverbs_attr_bundle *attrs,
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memset(&resp, 0, sizeof resp);
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copy_query_dev_fields(ucontext, &resp, &ucontext->device->attrs);
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if (copy_to_user(u64_to_user_ptr(cmd.response), &resp, sizeof resp))
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return -EFAULT;
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return 0;
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return uverbs_response(attrs, &resp, sizeof(resp));
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}
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/*
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@ -345,10 +341,7 @@ static int ib_uverbs_query_port(struct uverbs_attr_bundle *attrs,
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resp.link_layer = rdma_port_get_link_layer(ib_dev,
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cmd.port_num);
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if (copy_to_user(u64_to_user_ptr(cmd.response), &resp, sizeof resp))
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return -EFAULT;
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return 0;
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return uverbs_response(attrs, &resp, sizeof(resp));
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}
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static int ib_uverbs_alloc_pd(struct uverbs_attr_bundle *attrs,
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@ -385,10 +378,9 @@ static int ib_uverbs_alloc_pd(struct uverbs_attr_bundle *attrs,
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pd->res.type = RDMA_RESTRACK_PD;
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rdma_restrack_add(&pd->res);
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if (copy_to_user(u64_to_user_ptr(cmd.response), &resp, sizeof resp)) {
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ret = -EFAULT;
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ret = uverbs_response(attrs, &resp, sizeof(resp));
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if (ret)
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goto err_copy;
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}
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return uobj_alloc_commit(uobj);
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@ -575,10 +567,9 @@ static int ib_uverbs_open_xrcd(struct uverbs_attr_bundle *attrs,
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atomic_inc(&xrcd->usecnt);
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}
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if (copy_to_user(u64_to_user_ptr(cmd.response), &resp, sizeof resp)) {
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ret = -EFAULT;
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ret = uverbs_response(attrs, &resp, sizeof(resp));
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if (ret)
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goto err_copy;
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}
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if (f.file)
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fdput(f);
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@ -707,10 +698,9 @@ static int ib_uverbs_reg_mr(struct uverbs_attr_bundle *attrs,
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resp.rkey = mr->rkey;
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resp.mr_handle = uobj->id;
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if (copy_to_user(u64_to_user_ptr(cmd.response), &resp, sizeof resp)) {
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ret = -EFAULT;
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ret = uverbs_response(attrs, &resp, sizeof(resp));
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if (ret)
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goto err_copy;
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}
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uobj_put_obj_read(pd);
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@ -793,10 +783,7 @@ static int ib_uverbs_rereg_mr(struct uverbs_attr_bundle *attrs,
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resp.lkey = mr->lkey;
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resp.rkey = mr->rkey;
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if (copy_to_user(u64_to_user_ptr(cmd.response), &resp, sizeof(resp)))
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ret = -EFAULT;
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else
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ret = 0;
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ret = uverbs_response(attrs, &resp, sizeof(resp));
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put_uobj_pd:
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if (cmd.flags & IB_MR_REREG_PD)
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@ -860,10 +847,9 @@ static int ib_uverbs_alloc_mw(struct uverbs_attr_bundle *attrs,
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resp.rkey = mw->rkey;
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resp.mw_handle = uobj->id;
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if (copy_to_user(u64_to_user_ptr(cmd.response), &resp, sizeof(resp))) {
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ret = -EFAULT;
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ret = uverbs_response(attrs, &resp, sizeof(resp));
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if (ret)
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goto err_copy;
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}
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uobj_put_obj_read(pd);
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return uobj_alloc_commit(uobj);
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@ -897,6 +883,7 @@ static int ib_uverbs_create_comp_channel(struct uverbs_attr_bundle *attrs,
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struct ib_uobject *uobj;
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struct ib_uverbs_completion_event_file *ev_file;
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struct ib_device *ib_dev;
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int ret;
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if (copy_from_user(&cmd, buf, sizeof cmd))
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return -EFAULT;
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@ -911,9 +898,10 @@ static int ib_uverbs_create_comp_channel(struct uverbs_attr_bundle *attrs,
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uobj);
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ib_uverbs_init_event_queue(&ev_file->ev_queue);
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if (copy_to_user(u64_to_user_ptr(cmd.response), &resp, sizeof resp)) {
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ret = uverbs_response(attrs, &resp, sizeof(resp));
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if (ret) {
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uobj_alloc_abort(uobj);
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return -EFAULT;
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return ret;
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}
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return uobj_alloc_commit(uobj);
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@ -1076,9 +1064,7 @@ static int ib_uverbs_resize_cq(struct uverbs_attr_bundle *attrs,
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resp.cqe = cq->cqe;
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if (copy_to_user(u64_to_user_ptr(cmd.response), &resp, sizeof resp.cqe))
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ret = -EFAULT;
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ret = uverbs_response(attrs, &resp, sizeof(resp));
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out:
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uobj_put_obj_read(cq);
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@ -1209,10 +1195,7 @@ static int ib_uverbs_destroy_cq(struct uverbs_attr_bundle *attrs,
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uobj_put_destroy(uobj);
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if (copy_to_user(u64_to_user_ptr(cmd.response), &resp, sizeof resp))
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return -EFAULT;
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return 0;
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return uverbs_response(attrs, &resp, sizeof(resp));
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}
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static int create_qp(struct uverbs_attr_bundle *attrs,
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@ -1593,10 +1576,9 @@ static int ib_uverbs_open_qp(struct uverbs_attr_bundle *attrs,
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resp.qpn = qp->qp_num;
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resp.qp_handle = obj->uevent.uobject.id;
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if (copy_to_user(u64_to_user_ptr(cmd.response), &resp, sizeof resp)) {
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ret = -EFAULT;
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ret = uverbs_response(attrs, &resp, sizeof(resp));
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if (ret)
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goto err_destroy;
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}
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obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object, uobject);
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atomic_inc(&obj->uxrcd->refcnt);
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@ -1703,8 +1685,7 @@ static int ib_uverbs_query_qp(struct uverbs_attr_bundle *attrs,
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resp.max_inline_data = init_attr->cap.max_inline_data;
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resp.sq_sig_all = init_attr->sq_sig_type == IB_SIGNAL_ALL_WR;
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if (copy_to_user(u64_to_user_ptr(cmd.response), &resp, sizeof resp))
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ret = -EFAULT;
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ret = uverbs_response(attrs, &resp, sizeof(resp));
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out:
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kfree(attr);
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@ -1979,10 +1960,7 @@ static int ib_uverbs_destroy_qp(struct uverbs_attr_bundle *attrs,
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uobj_put_destroy(uobj);
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if (copy_to_user(u64_to_user_ptr(cmd.response), &resp, sizeof resp))
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return -EFAULT;
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return 0;
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return uverbs_response(attrs, &resp, sizeof(resp));
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}
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static void *alloc_wr(size_t wr_size, __u32 num_sge)
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@ -2006,7 +1984,7 @@ static int ib_uverbs_post_send(struct uverbs_attr_bundle *attrs,
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struct ib_qp *qp;
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int i, sg_ind;
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int is_ud;
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ssize_t ret = -EINVAL;
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int ret, ret2;
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size_t next_size;
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if (copy_from_user(&cmd, buf, sizeof cmd))
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@ -2162,8 +2140,9 @@ static int ib_uverbs_post_send(struct uverbs_attr_bundle *attrs,
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break;
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}
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if (copy_to_user(u64_to_user_ptr(cmd.response), &resp, sizeof resp))
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ret = -EFAULT;
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ret2 = uverbs_response(attrs, &resp, sizeof(resp));
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if (ret2)
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ret = ret2;
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out_put:
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uobj_put_obj_read(qp);
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@ -2282,7 +2261,7 @@ static int ib_uverbs_post_recv(struct uverbs_attr_bundle *attrs,
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struct ib_recv_wr *wr, *next;
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const struct ib_recv_wr *bad_wr;
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struct ib_qp *qp;
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ssize_t ret = -EINVAL;
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int ret, ret2;
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if (copy_from_user(&cmd, buf, sizeof cmd))
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return -EFAULT;
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@ -2294,8 +2273,10 @@ static int ib_uverbs_post_recv(struct uverbs_attr_bundle *attrs,
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return PTR_ERR(wr);
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qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs);
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if (!qp)
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if (!qp) {
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ret = -EINVAL;
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goto out;
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}
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resp.bad_wr = 0;
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ret = qp->device->post_recv(qp->real_qp, wr, &bad_wr);
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@ -2309,9 +2290,9 @@ static int ib_uverbs_post_recv(struct uverbs_attr_bundle *attrs,
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}
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}
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if (copy_to_user(u64_to_user_ptr(cmd.response), &resp, sizeof resp))
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ret = -EFAULT;
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ret2 = uverbs_response(attrs, &resp, sizeof(resp));
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if (ret2)
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ret = ret2;
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out:
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while (wr) {
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next = wr->next;
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@ -2331,7 +2312,7 @@ static int ib_uverbs_post_srq_recv(struct uverbs_attr_bundle *attrs,
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struct ib_recv_wr *wr, *next;
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const struct ib_recv_wr *bad_wr;
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struct ib_srq *srq;
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ssize_t ret = -EINVAL;
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int ret, ret2;
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if (copy_from_user(&cmd, buf, sizeof cmd))
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return -EFAULT;
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@ -2343,8 +2324,10 @@ static int ib_uverbs_post_srq_recv(struct uverbs_attr_bundle *attrs,
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return PTR_ERR(wr);
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srq = uobj_get_obj_read(srq, UVERBS_OBJECT_SRQ, cmd.srq_handle, attrs);
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if (!srq)
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if (!srq) {
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ret = -EINVAL;
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goto out;
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}
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resp.bad_wr = 0;
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ret = srq->device->post_srq_recv(srq, wr, &bad_wr);
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@ -2358,8 +2341,9 @@ static int ib_uverbs_post_srq_recv(struct uverbs_attr_bundle *attrs,
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break;
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}
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if (copy_to_user(u64_to_user_ptr(cmd.response), &resp, sizeof resp))
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ret = -EFAULT;
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ret2 = uverbs_response(attrs, &resp, sizeof(resp));
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if (ret2)
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ret = ret2;
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out:
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while (wr) {
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@ -2431,10 +2415,9 @@ static int ib_uverbs_create_ah(struct uverbs_attr_bundle *attrs,
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resp.ah_handle = uobj->id;
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if (copy_to_user(u64_to_user_ptr(cmd.response), &resp, sizeof resp)) {
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ret = -EFAULT;
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ret = uverbs_response(attrs, &resp, sizeof(resp));
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if (ret)
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goto err_copy;
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}
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uobj_put_obj_read(pd);
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return uobj_alloc_commit(uobj);
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@ -2962,8 +2945,7 @@ static int ib_uverbs_ex_create_wq(struct uverbs_attr_bundle *attrs,
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resp.max_wr = wq_init_attr.max_wr;
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resp.wqn = wq->wq_num;
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resp.response_length = required_resp_len;
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err = ib_copy_to_udata(ucore,
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&resp, resp.response_length);
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err = uverbs_response(attrs, &resp, sizeof(resp));
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if (err)
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goto err_copy;
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@ -3025,7 +3007,7 @@ static int ib_uverbs_ex_destroy_wq(struct uverbs_attr_bundle *attrs,
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uobj_put_destroy(uobj);
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return ib_copy_to_udata(ucore, &resp, resp.response_length);
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return uverbs_response(attrs, &resp, sizeof(resp));
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}
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static int ib_uverbs_ex_modify_wq(struct uverbs_attr_bundle *attrs,
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@ -3186,8 +3168,7 @@ static int ib_uverbs_ex_create_rwq_ind_table(struct uverbs_attr_bundle *attrs,
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resp.ind_tbl_num = rwq_ind_tbl->ind_tbl_num;
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resp.response_length = required_resp_len;
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err = ib_copy_to_udata(ucore,
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&resp, resp.response_length);
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err = uverbs_response(attrs, &resp, sizeof(resp));
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if (err)
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goto err_copy;
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@ -3384,8 +3365,7 @@ static int ib_uverbs_ex_create_flow(struct uverbs_attr_bundle *attrs,
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memset(&resp, 0, sizeof(resp));
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resp.flow_handle = uobj->id;
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err = ib_copy_to_udata(ucore,
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&resp, sizeof(resp));
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err = uverbs_response(attrs, &resp, sizeof(resp));
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if (err)
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goto err_copy;
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@ -3530,11 +3510,9 @@ static int __uverbs_create_xsrq(struct uverbs_attr_bundle *attrs,
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if (cmd->srq_type == IB_SRQT_XRC)
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resp.srqn = srq->ext.xrc.srq_num;
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if (copy_to_user(u64_to_user_ptr(cmd->response),
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&resp, sizeof resp)) {
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ret = -EFAULT;
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ret = uverbs_response(attrs, &resp, sizeof(resp));
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if (ret)
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goto err_copy;
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}
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if (cmd->srq_type == IB_SRQT_XRC)
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uobj_put_read(xrcd_uobj);
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@ -3654,10 +3632,7 @@ static int ib_uverbs_query_srq(struct uverbs_attr_bundle *attrs,
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resp.max_sge = attr.max_sge;
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resp.srq_limit = attr.srq_limit;
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if (copy_to_user(u64_to_user_ptr(cmd.response), &resp, sizeof resp))
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return -EFAULT;
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return 0;
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return uverbs_response(attrs, &resp, sizeof(resp));
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}
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static int ib_uverbs_destroy_srq(struct uverbs_attr_bundle *attrs,
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@ -3682,10 +3657,7 @@ static int ib_uverbs_destroy_srq(struct uverbs_attr_bundle *attrs,
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uobj_put_destroy(uobj);
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if (copy_to_user(u64_to_user_ptr(cmd.response), &resp, sizeof(resp)))
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return -EFAULT;
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return 0;
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return uverbs_response(attrs, &resp, sizeof(resp));
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}
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static int ib_uverbs_ex_query_device(struct uverbs_attr_bundle *attrs,
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@ -3807,8 +3779,7 @@ static int ib_uverbs_ex_query_device(struct uverbs_attr_bundle *attrs,
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resp.max_dm_size = attr.max_dm_size;
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resp.response_length += sizeof(resp.max_dm_size);
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end:
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err = ib_copy_to_udata(ucore, &resp, resp.response_length);
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return err;
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return uverbs_response(attrs, &resp, sizeof(resp));
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}
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static int ib_uverbs_ex_modify_cq(struct uverbs_attr_bundle *attrs,
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