1 | /* $NetBSD: netbsd32_event.c,v 1.12 2014/09/05 05:26:26 matt Exp $ */ |
2 | |
3 | /* |
4 | * Copyright (c) 2005 The NetBSD Foundation. |
5 | * All rights reserved. |
6 | * |
7 | * Redistribution and use in source and binary forms, with or without |
8 | * modification, are permitted provided that the following conditions |
9 | * are met: |
10 | * 1. Redistributions of source code must retain the above copyright |
11 | * notice, this list of conditions and the following disclaimer. |
12 | * 2. Redistributions in binary form must reproduce the above copyright |
13 | * notice, this list of conditions and the following disclaimer in the |
14 | * documentation and/or other materials provided with the distribution. |
15 | * |
16 | * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS |
17 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
18 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
19 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS |
20 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
21 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
22 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
23 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
24 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
25 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
26 | * POSSIBILITY OF SUCH DAMAGE. |
27 | */ |
28 | |
29 | #include <sys/cdefs.h> |
30 | __KERNEL_RCSID(0, "$NetBSD: netbsd32_event.c,v 1.12 2014/09/05 05:26:26 matt Exp $" ); |
31 | |
32 | #include <sys/types.h> |
33 | #include <sys/param.h> |
34 | #include <sys/systm.h> |
35 | #include <sys/file.h> |
36 | #include <sys/filedesc.h> |
37 | #include <sys/select.h> |
38 | #include <sys/event.h> |
39 | #include <sys/eventvar.h> |
40 | #include <sys/proc.h> |
41 | #include <sys/dirent.h> |
42 | |
43 | #include <compat/netbsd32/netbsd32.h> |
44 | #include <compat/netbsd32/netbsd32_syscall.h> |
45 | #include <compat/netbsd32/netbsd32_syscallargs.h> |
46 | #include <compat/netbsd32/netbsd32_conv.h> |
47 | |
48 | static int |
49 | netbsd32_kevent_fetch_timeout(const void *src, void *dest, size_t length) |
50 | { |
51 | struct netbsd32_timespec ts32; |
52 | int error; |
53 | |
54 | KASSERT(length == sizeof(struct timespec)); |
55 | |
56 | error = copyin(src, &ts32, sizeof(ts32)); |
57 | if (error) |
58 | return error; |
59 | netbsd32_to_timespec(&ts32, (struct timespec *)dest); |
60 | return 0; |
61 | } |
62 | |
63 | static int |
64 | netbsd32_kevent_fetch_changes(void *ctx, const struct kevent *changelist, |
65 | struct kevent *changes, size_t index, int n) |
66 | { |
67 | const struct netbsd32_kevent *src = |
68 | (const struct netbsd32_kevent *)changelist; |
69 | struct netbsd32_kevent *kev32, *changes32 = ctx; |
70 | int error, i; |
71 | |
72 | error = copyin(src + index, changes32, n * sizeof(*changes32)); |
73 | if (error) |
74 | return error; |
75 | for (i = 0, kev32 = changes32; i < n; i++, kev32++, changes++) |
76 | netbsd32_to_kevent(kev32, changes); |
77 | return 0; |
78 | } |
79 | |
80 | static int |
81 | netbsd32_kevent_put_events(void *ctx, struct kevent *events, |
82 | struct kevent *eventlist, size_t index, int n) |
83 | { |
84 | struct netbsd32_kevent *kev32, *events32 = ctx; |
85 | int i; |
86 | |
87 | for (i = 0, kev32 = events32; i < n; i++, kev32++, events++) |
88 | netbsd32_from_kevent(events, kev32); |
89 | kev32 = ((struct netbsd32_kevent *)eventlist) + index; |
90 | return copyout(events32, kev32, n * sizeof(*events32)); |
91 | } |
92 | |
93 | int |
94 | netbsd32___kevent50(struct lwp *l, |
95 | const struct netbsd32___kevent50_args *uap, register_t *retval) |
96 | { |
97 | /* { |
98 | syscallarg(int) fd; |
99 | syscallarg(netbsd32_keventp_t) changelist; |
100 | syscallarg(netbsd32_size_t) nchanges; |
101 | syscallarg(netbsd32_keventp_t) eventlist; |
102 | syscallarg(netbsd32_size_t) nevents; |
103 | syscallarg(netbsd32_timespecp_t) timeout; |
104 | } */ |
105 | int error; |
106 | size_t maxalloc, nchanges, nevents; |
107 | struct kevent_ops netbsd32_kevent_ops = { |
108 | .keo_fetch_timeout = netbsd32_kevent_fetch_timeout, |
109 | .keo_fetch_changes = netbsd32_kevent_fetch_changes, |
110 | .keo_put_events = netbsd32_kevent_put_events, |
111 | }; |
112 | |
113 | nchanges = SCARG(uap, nchanges); |
114 | nevents = SCARG(uap, nevents); |
115 | maxalloc = KQ_NEVENTS; |
116 | |
117 | netbsd32_kevent_ops.keo_private = |
118 | kmem_alloc(maxalloc * sizeof(struct netbsd32_kevent), KM_SLEEP); |
119 | |
120 | error = kevent1(retval, SCARG(uap, fd), |
121 | NETBSD32PTR64(SCARG(uap, changelist)), nchanges, |
122 | NETBSD32PTR64(SCARG(uap, eventlist)), nevents, |
123 | NETBSD32PTR64(SCARG(uap, timeout)), &netbsd32_kevent_ops); |
124 | |
125 | kmem_free(netbsd32_kevent_ops.keo_private, |
126 | maxalloc * sizeof(struct netbsd32_kevent)); |
127 | return error; |
128 | } |
129 | |