1/* $NetBSD: kern_select_50.c,v 1.2 2019/01/27 02:08:39 pgoyette Exp $ */
2
3/*-
4 * Copyright (c) 2008, 2009 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Christos Zoulas.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31#include <sys/cdefs.h>
32__KERNEL_RCSID(0, "$NetBSD: kern_select_50.c,v 1.2 2019/01/27 02:08:39 pgoyette Exp $");
33
34#if defined(_KERNEL_OPT)
35#include "opt_compat_netbsd.h"
36#endif
37
38#include <sys/param.h>
39#include <sys/event.h>
40#include <sys/poll.h>
41#include <sys/select.h>
42#include <sys/time.h>
43#include <sys/syscall.h>
44#include <sys/syscallvar.h>
45#include <sys/syscallargs.h>
46
47#include <compat/sys/time.h>
48#include <compat/common/compat_mod.h>
49
50static const struct syscall_package kern_select_50_syscalls[] = {
51 { SYS_compat_50_kevent, 0, (sy_call_t *)compat_50_sys_kevent },
52 { SYS_compat_50_select, 0, (sy_call_t *)compat_50_sys_select },
53 { SYS_compat_50_pselect, 0, (sy_call_t *)compat_50_sys_pselect },
54 { SYS_compat_50_pollts, 0, (sy_call_t *)compat_50_sys_pollts },
55 { 0, 0, NULL }
56};
57
58static int
59compat_50_kevent_fetch_timeout(const void *src, void *dest, size_t length)
60{
61 struct timespec50 ts50;
62 int error;
63
64 KASSERT(length == sizeof(struct timespec));
65
66 error = copyin(src, &ts50, sizeof(ts50));
67 if (error)
68 return error;
69 timespec50_to_timespec(&ts50, (struct timespec *)dest);
70 return 0;
71}
72
73int
74compat_50_sys_kevent(struct lwp *l, const struct compat_50_sys_kevent_args *uap,
75 register_t *retval)
76{
77 /* {
78 syscallarg(int) fd;
79 syscallarg(keventp_t) changelist;
80 syscallarg(size_t) nchanges;
81 syscallarg(keventp_t) eventlist;
82 syscallarg(size_t) nevents;
83 syscallarg(struct timespec50) timeout;
84 } */
85 static const struct kevent_ops compat_50_kevent_ops = {
86 .keo_private = NULL,
87 .keo_fetch_timeout = compat_50_kevent_fetch_timeout,
88 .keo_fetch_changes = kevent_fetch_changes,
89 .keo_put_events = kevent_put_events,
90 };
91
92 return kevent1(retval, SCARG(uap, fd), SCARG(uap, changelist),
93 SCARG(uap, nchanges), SCARG(uap, eventlist), SCARG(uap, nevents),
94 (const struct timespec *)(const void *)SCARG(uap, timeout),
95 &compat_50_kevent_ops);
96}
97
98int
99compat_50_sys_select(struct lwp *l,
100 const struct compat_50_sys_select_args *uap, register_t *retval)
101{
102 /* {
103 syscallarg(int) nd;
104 syscallarg(fd_set *) in;
105 syscallarg(fd_set *) ou;
106 syscallarg(fd_set *) ex;
107 syscallarg(struct timeval50 *) tv;
108 } */
109 struct timespec ats, *ts = NULL;
110 struct timeval50 atv50;
111 int error;
112
113 if (SCARG(uap, tv)) {
114 error = copyin(SCARG(uap, tv), (void *)&atv50, sizeof(atv50));
115 if (error)
116 return error;
117 ats.tv_sec = atv50.tv_sec;
118 ats.tv_nsec = atv50.tv_usec * 1000;
119 ts = &ats;
120 }
121
122 return selcommon(retval, SCARG(uap, nd), SCARG(uap, in),
123 SCARG(uap, ou), SCARG(uap, ex), ts, NULL);
124}
125
126int
127compat_50_sys_pselect(struct lwp *l,
128 const struct compat_50_sys_pselect_args *uap, register_t *retval)
129{
130 /* {
131 syscallarg(int) nd;
132 syscallarg(fd_set *) in;
133 syscallarg(fd_set *) ou;
134 syscallarg(fd_set *) ex;
135 syscallarg(const struct timespec50 *) ts;
136 syscallarg(sigset_t *) mask;
137 } */
138 struct timespec50 ats50;
139 struct timespec ats, *ts = NULL;
140 sigset_t amask, *mask = NULL;
141 int error;
142
143 if (SCARG(uap, ts)) {
144 error = copyin(SCARG(uap, ts), &ats50, sizeof(ats50));
145 if (error)
146 return error;
147 timespec50_to_timespec(&ats50, &ats);
148 ts = &ats;
149 }
150 if (SCARG(uap, mask) != NULL) {
151 error = copyin(SCARG(uap, mask), &amask, sizeof(amask));
152 if (error)
153 return error;
154 mask = &amask;
155 }
156
157 return selcommon(retval, SCARG(uap, nd), SCARG(uap, in),
158 SCARG(uap, ou), SCARG(uap, ex), ts, mask);
159}
160
161int
162compat_50_sys_pollts(struct lwp *l, const struct compat_50_sys_pollts_args *uap,
163 register_t *retval)
164{
165 /* {
166 syscallarg(struct pollfd *) fds;
167 syscallarg(u_int) nfds;
168 syscallarg(const struct timespec50 *) ts;
169 syscallarg(const sigset_t *) mask;
170 } */
171 struct timespec ats, *ts = NULL;
172 struct timespec50 ats50;
173 sigset_t amask, *mask = NULL;
174 int error;
175
176 if (SCARG(uap, ts)) {
177 error = copyin(SCARG(uap, ts), &ats50, sizeof(ats50));
178 if (error)
179 return error;
180 timespec50_to_timespec(&ats50, &ats);
181 ts = &ats;
182 }
183 if (SCARG(uap, mask)) {
184 error = copyin(SCARG(uap, mask), &amask, sizeof(amask));
185 if (error)
186 return error;
187 mask = &amask;
188 }
189
190 return pollcommon(retval, SCARG(uap, fds), SCARG(uap, nfds), ts, mask);
191}
192
193int
194kern_select_50_init(void)
195{
196
197return syscall_establish(NULL, kern_select_50_syscalls);
198}
199
200int
201kern_select_50_fini(void)
202{
203
204return syscall_disestablish(NULL, kern_select_50_syscalls);
205}
206