cloudabi64_sock.c revision 316574 
1/*-
2 * Copyright (c) 2015-2017 Nuxi, https://nuxi.nl/
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
23 * SUCH DAMAGE.
24 */
25
26#include <sys/cdefs.h>
27__FBSDID("$FreeBSD: stable/11/sys/compat/cloudabi64/cloudabi64_sock.c 316574 2017-04-06 15:10:36Z ed $");
28
29#include <sys/param.h>
30#include <sys/kernel.h>
31#include <sys/malloc.h>
32#include <sys/systm.h>
33#include <sys/uio.h>
34
35#include <contrib/cloudabi/cloudabi64_types.h>
36
37#include <compat/cloudabi/cloudabi_util.h>
38
39#include <compat/cloudabi64/cloudabi64_proto.h>
40#include <compat/cloudabi64/cloudabi64_util.h>
41
42static MALLOC_DEFINE(M_SOCKET, "socket", "CloudABI socket");
43
44int
45cloudabi64_sys_sock_recv(struct thread *td,
46    struct cloudabi64_sys_sock_recv_args *uap)
47{
48	cloudabi64_recv_in_t ri;
49	cloudabi64_recv_out_t ro = {};
50	cloudabi64_iovec_t iovobj;
51	struct iovec *iov;
52	const cloudabi64_iovec_t *user_iov;
53	size_t i, rdatalen, rfdslen;
54	int error;
55
56	error = copyin(uap->in, &ri, sizeof(ri));
57	if (error != 0)
58		return (error);
59
60	/* Convert iovecs to native format. */
61	if (ri.ri_data_len > UIO_MAXIOV)
62		return (EINVAL);
63	iov = malloc(ri.ri_data_len * sizeof(struct iovec),
64	    M_SOCKET, M_WAITOK);
65	user_iov = TO_PTR(ri.ri_data);
66	for (i = 0; i < ri.ri_data_len; i++) {
67		error = copyin(&user_iov[i], &iovobj, sizeof(iovobj));
68		if (error != 0) {
69			free(iov, M_SOCKET);
70			return (error);
71		}
72		iov[i].iov_base = TO_PTR(iovobj.buf);
73		iov[i].iov_len = iovobj.buf_len;
74	}
75
76	error = cloudabi_sock_recv(td, uap->sock, iov, ri.ri_data_len,
77	    TO_PTR(ri.ri_fds), ri.ri_fds_len, ri.ri_flags, &rdatalen,
78	    &rfdslen, &ro.ro_peername, &ro.ro_flags);
79	free(iov, M_SOCKET);
80	if (error != 0)
81		return (error);
82
83	ro.ro_datalen = rdatalen;
84	ro.ro_fdslen = rfdslen;
85	return (copyout(&ro, uap->out, sizeof(ro)));
86}
87
88int
89cloudabi64_sys_sock_send(struct thread *td,
90    struct cloudabi64_sys_sock_send_args *uap)
91{
92	cloudabi64_send_in_t si;
93	cloudabi64_send_out_t so = {};
94	cloudabi64_ciovec_t iovobj;
95	struct iovec *iov;
96	const cloudabi64_ciovec_t *user_iov;
97	size_t datalen, i;
98	int error;
99
100	error = copyin(uap->in, &si, sizeof(si));
101	if (error != 0)
102		return (error);
103
104	/* Convert iovecs to native format. */
105	if (si.si_data_len > UIO_MAXIOV)
106		return (EINVAL);
107	iov = malloc(si.si_data_len * sizeof(struct iovec),
108	    M_SOCKET, M_WAITOK);
109	user_iov = TO_PTR(si.si_data);
110	for (i = 0; i < si.si_data_len; i++) {
111		error = copyin(&user_iov[i], &iovobj, sizeof(iovobj));
112		if (error != 0) {
113			free(iov, M_SOCKET);
114			return (error);
115		}
116		iov[i].iov_base = TO_PTR(iovobj.buf);
117		iov[i].iov_len = iovobj.buf_len;
118	}
119
120	error = cloudabi_sock_send(td, uap->sock, iov, si.si_data_len,
121	    TO_PTR(si.si_fds), si.si_fds_len, si.si_flags, &datalen);
122	free(iov, M_SOCKET);
123	if (error != 0)
124		return (error);
125
126	so.so_datalen = datalen;
127	return (copyout(&so, uap->out, sizeof(so)));
128}
129