1 /*-
2 * Copyright (c) 2015 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("$FreeBSD$");
28
29 #include <sys/param.h>
30 #include <sys/kernel.h>
31 #include <sys/malloc.h>
32 #include <sys/proc.h>
33 #include <sys/socket.h>
34 #include <sys/syscallsubr.h>
35 #include <sys/systm.h>
36 #include <sys/uio.h>
37
38 #include <compat/cloudabi/cloudabi_util.h>
39
40 #include <compat/cloudabi64/cloudabi64_syscalldefs.h>
41 #include <compat/cloudabi64/cloudabi64_proto.h>
42
43 static MALLOC_DEFINE(M_SOCKET, "socket", "CloudABI socket");
44
45 int
cloudabi64_sys_sock_recv(struct thread * td,struct cloudabi64_sys_sock_recv_args * uap)46 cloudabi64_sys_sock_recv(struct thread *td,
47 struct cloudabi64_sys_sock_recv_args *uap)
48 {
49 struct sockaddr_storage ss;
50 cloudabi64_recv_in_t ri;
51 cloudabi64_recv_out_t ro = {};
52 cloudabi64_iovec_t iovobj;
53 struct msghdr msghdr = {};
54 size_t i;
55 int error;
56
57 error = copyin(uap->in, &ri, sizeof(ri));
58 if (error != 0)
59 return (error);
60
61 /* Convert results in cloudabi_recv_in_t to struct msghdr. */
62 if (ri.ri_datalen > UIO_MAXIOV)
63 return (EINVAL);
64 msghdr.msg_iovlen = ri.ri_datalen;
65 msghdr.msg_iov = malloc(msghdr.msg_iovlen * sizeof(struct iovec),
66 M_SOCKET, M_WAITOK);
67 for (i = 0; i < msghdr.msg_iovlen; i++) {
68 error = copyin(&((cloudabi64_iovec_t *)ri.ri_data)[i], &iovobj,
69 sizeof(iovobj));
70 if (error != 0) {
71 free(msghdr.msg_iov, M_SOCKET);
72 return (error);
73 }
74 msghdr.msg_iov[i].iov_base = (void *)iovobj.iov_base;
75 msghdr.msg_iov[i].iov_len = iovobj.iov_len;
76 }
77 msghdr.msg_name = &ss;
78 msghdr.msg_namelen = sizeof(ss);
79 if (ri.ri_flags & CLOUDABI_MSG_PEEK)
80 msghdr.msg_flags |= MSG_PEEK;
81 if (ri.ri_flags & CLOUDABI_MSG_WAITALL)
82 msghdr.msg_flags |= MSG_WAITALL;
83
84 /* TODO(ed): Add file descriptor passing. */
85 error = kern_recvit(td, uap->s, &msghdr, UIO_SYSSPACE, NULL);
86 free(msghdr.msg_iov, M_SOCKET);
87 if (error != 0)
88 return (error);
89
90 /* Convert results in msghdr to cloudabi_recv_out_t. */
91 ro.ro_datalen = td->td_retval[0];
92 cloudabi_convert_sockaddr((struct sockaddr *)&ss,
93 MIN(msghdr.msg_namelen, sizeof(ss)), &ro.ro_peername);
94 td->td_retval[0] = 0;
95 return (copyout(&ro, uap->out, sizeof(ro)));
96 }
97
98 int
cloudabi64_sys_sock_send(struct thread * td,struct cloudabi64_sys_sock_send_args * uap)99 cloudabi64_sys_sock_send(struct thread *td,
100 struct cloudabi64_sys_sock_send_args *uap)
101 {
102 cloudabi64_send_in_t si;
103 cloudabi64_send_out_t so = {};
104 cloudabi64_ciovec_t iovobj;
105 struct msghdr msghdr = {};
106 size_t i;
107 int error, flags;
108
109 error = copyin(uap->in, &si, sizeof(si));
110 if (error != 0)
111 return (error);
112
113 /* Convert results in cloudabi_send_in_t to struct msghdr. */
114 if (si.si_datalen > UIO_MAXIOV)
115 return (EINVAL);
116 msghdr.msg_iovlen = si.si_datalen;
117 msghdr.msg_iov = malloc(msghdr.msg_iovlen * sizeof(struct iovec),
118 M_SOCKET, M_WAITOK);
119 for (i = 0; i < msghdr.msg_iovlen; i++) {
120 error = copyin(&((cloudabi64_ciovec_t *)si.si_data)[i], &iovobj,
121 sizeof(iovobj));
122 if (error != 0) {
123 free(msghdr.msg_iov, M_SOCKET);
124 return (error);
125 }
126 msghdr.msg_iov[i].iov_base = (void *)iovobj.iov_base;
127 msghdr.msg_iov[i].iov_len = iovobj.iov_len;
128 }
129
130 flags = MSG_NOSIGNAL;
131 if (si.si_flags & CLOUDABI_MSG_EOR)
132 flags |= MSG_EOR;
133
134 /* TODO(ed): Add file descriptor passing. */
135 error = kern_sendit(td, uap->s, &msghdr, flags, NULL, UIO_USERSPACE);
136 free(msghdr.msg_iov, M_SOCKET);
137 if (error != 0)
138 return (error);
139
140 /* Convert results in msghdr to cloudabi_send_out_t. */
141 so.so_datalen = td->td_retval[0];
142 td->td_retval[0] = 0;
143 return (copyout(&so, uap->out, sizeof(so)));
144 }
145