1 | /* $NetBSD: netbsd32_sem.c,v 1.11 2014/09/19 17:25:33 matt Exp $ */ |
2 | |
3 | /* |
4 | * Copyright (c) 2006 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_sem.c,v 1.11 2014/09/19 17:25:33 matt Exp $" ); |
31 | |
32 | #include <sys/types.h> |
33 | #include <sys/param.h> |
34 | #include <sys/systm.h> |
35 | #include <sys/kernel.h> |
36 | #include <sys/dirent.h> |
37 | #include <sys/condvar.h> |
38 | #include <sys/ksem.h> |
39 | #include <sys/mount.h> |
40 | #include <sys/proc.h> |
41 | #include <sys/syscallargs.h> |
42 | |
43 | #include <compat/netbsd32/netbsd32.h> |
44 | #include <compat/netbsd32/netbsd32_syscallargs.h> |
45 | #include <compat/netbsd32/netbsd32_conv.h> |
46 | |
47 | static int |
48 | netbsd32_ksem_copyout(const void *src, void *dst, size_t size) |
49 | { |
50 | const intptr_t *idp = src; |
51 | netbsd32_intptr_t id32, *outidp = dst; |
52 | |
53 | KASSERT(size == sizeof(intptr_t)); |
54 | |
55 | /* Returning a kernel pointer to userspace sucks badly :-( */ |
56 | id32 = (netbsd32_intptr_t)*idp; |
57 | return copyout(&id32, outidp, sizeof(id32)); |
58 | } |
59 | |
60 | int |
61 | netbsd32__ksem_init(struct lwp *l, const struct netbsd32__ksem_init_args *uap, register_t *retval) |
62 | { |
63 | /* { |
64 | syscallarg(unsigned int) value; |
65 | syscallarg(netbsd32_semidp_t) idp; |
66 | } */ |
67 | |
68 | return do_ksem_init(l, SCARG(uap, value), |
69 | SCARG_P32(uap, idp), netbsd32_ksem_copyout); |
70 | } |
71 | |
72 | int |
73 | netbsd32__ksem_open(struct lwp *l, const struct netbsd32__ksem_open_args *uap, register_t *retval) |
74 | { |
75 | /* { |
76 | syscallarg(const netbsd32_charp) name; |
77 | syscallarg(int) oflag; |
78 | syscallarg(mode_t) mode; |
79 | syscallarg(unsigned int) value; |
80 | syscallarg(netbsd32_semidp_t) idp; |
81 | } */ |
82 | |
83 | return do_ksem_open(l, SCARG_P32(uap, name), |
84 | SCARG(uap, oflag), SCARG(uap, mode), SCARG(uap, value), |
85 | SCARG_P32(uap, idp), netbsd32_ksem_copyout); |
86 | } |
87 | |
88 | int |
89 | netbsd32__ksem_unlink(struct lwp *l, const struct netbsd32__ksem_unlink_args *uap, register_t *retval) |
90 | { |
91 | /* { |
92 | syscallarg(const netbsd32_charp) name; |
93 | } */ |
94 | struct sys__ksem_unlink_args ua; |
95 | |
96 | NETBSD32TOP_UAP(name, const char); |
97 | return sys__ksem_unlink(l, &ua, retval); |
98 | } |
99 | |
100 | int |
101 | netbsd32__ksem_close(struct lwp *l, const struct netbsd32__ksem_close_args *uap, register_t *retval) |
102 | { |
103 | /* { |
104 | syscallarg(netbsd32_intptr_t) id; |
105 | } */ |
106 | struct sys__ksem_close_args ua; |
107 | |
108 | NETBSD32TOX_UAP(id, intptr_t); |
109 | return sys__ksem_close(l, &ua, retval); |
110 | } |
111 | |
112 | int |
113 | netbsd32__ksem_post(struct lwp *l, const struct netbsd32__ksem_post_args *uap, register_t *retval) |
114 | { |
115 | /* { |
116 | syscallarg(netbsd32_intptr_t) id; |
117 | } */ |
118 | struct sys__ksem_post_args ua; |
119 | |
120 | NETBSD32TOX_UAP(id, intptr_t); |
121 | return sys__ksem_post(l, &ua, retval); |
122 | } |
123 | |
124 | int |
125 | netbsd32__ksem_wait(struct lwp *l, const struct netbsd32__ksem_wait_args *uap, register_t *retval) |
126 | { |
127 | /* { |
128 | syscallarg(netbsd32_intptr_t) id; |
129 | } */ |
130 | |
131 | return do_ksem_wait(l, SCARG(uap, id), false, NULL); |
132 | } |
133 | |
134 | int |
135 | netbsd32__ksem_trywait(struct lwp *l, const struct netbsd32__ksem_trywait_args *uap, register_t *retval) |
136 | { |
137 | /* { |
138 | syscallarg(netbsd32_intptr_t) id; |
139 | } */ |
140 | |
141 | return do_ksem_wait(l, SCARG(uap, id), true, NULL); |
142 | } |
143 | |
144 | int |
145 | netbsd32__ksem_timedwait(struct lwp *l, const struct netbsd32__ksem_timedwait_args *uap, |
146 | register_t *retval) |
147 | { |
148 | /* { |
149 | intptr_t id; |
150 | const netbsd32_timespecp_t abstime; |
151 | } */ |
152 | struct netbsd32_timespec ts32; |
153 | struct timespec ts; |
154 | intptr_t id; |
155 | int error; |
156 | |
157 | id = SCARG(uap, id); |
158 | |
159 | error = copyin(SCARG_P32(uap, abstime), &ts32, sizeof(ts32)); |
160 | if (error != 0) |
161 | return error; |
162 | netbsd32_to_timespec(&ts32, &ts); |
163 | |
164 | if (ts.tv_sec < 0 || ts.tv_nsec < 0 || ts.tv_nsec >= 1000000000) |
165 | return EINVAL; |
166 | |
167 | error = do_ksem_wait(l, id, false, &ts); |
168 | if (error == EWOULDBLOCK) |
169 | error = ETIMEDOUT; |
170 | return error; |
171 | } |
172 | |
173 | int |
174 | netbsd32__ksem_destroy(struct lwp *l, const struct netbsd32__ksem_destroy_args *uap, register_t *retval) |
175 | { |
176 | /* { |
177 | syscallarg(netbsd32_intptr_t) id; |
178 | } */ |
179 | struct sys__ksem_destroy_args ua; |
180 | |
181 | NETBSD32TOX_UAP(id, intptr_t); |
182 | return sys__ksem_destroy(l, &ua, retval); |
183 | } |
184 | |
185 | int |
186 | netbsd32__ksem_getvalue(struct lwp *l, const struct netbsd32__ksem_getvalue_args *uap, register_t *retval) |
187 | { |
188 | /* { |
189 | syscallarg(netbsd32_intptr_t) id; |
190 | syscallarg(netbsd32_intp) value; |
191 | } */ |
192 | struct sys__ksem_getvalue_args ua; |
193 | |
194 | NETBSD32TOX_UAP(id, intptr_t); |
195 | NETBSD32TOP_UAP(value, unsigned int); |
196 | return sys__ksem_getvalue(l, &ua, retval); |
197 | } |
198 | |