1 /* $NetBSD: netbsd32_lwp.c,v 1.23 2021/01/14 02:51:52 simonb Exp $ */
2
3 /*
4 * Copyright (c) 2005, 2006, 2007, 2020 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_lwp.c,v 1.23 2021/01/14 02:51:52 simonb 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/mount.h>
38 #include <sys/proc.h>
39 #include <sys/syscallargs.h>
40 #include <sys/lwpctl.h>
41
42 #include <compat/netbsd32/netbsd32.h>
43 #include <compat/netbsd32/netbsd32_syscallargs.h>
44 #include <compat/netbsd32/netbsd32_conv.h>
45
46 /* Sycalls conversion */
47
48 int
netbsd32__lwp_create(struct lwp * l,const struct netbsd32__lwp_create_args * uap,register_t * retval)49 netbsd32__lwp_create(struct lwp *l, const struct netbsd32__lwp_create_args *uap, register_t *retval)
50 {
51 /* {
52 syscallarg(const netbsd32_ucontextp) ucp;
53 syscallarg(netbsd32_u_long) flags;
54 syscallarg(netbsd32_lwpidp) new_lwp;
55 } */
56 struct proc *p = l->l_proc;
57 ucontext32_t *newuc = NULL;
58 lwp_t *l2;
59 int error;
60
61 KASSERT(p->p_emul->e_ucsize == sizeof(*newuc));
62
63 newuc = kmem_alloc(sizeof(ucontext_t), KM_SLEEP);
64 error = copyin(SCARG_P32(uap, ucp), newuc, p->p_emul->e_ucsize);
65 if (error)
66 goto fail;
67
68 /* validate the ucontext */
69 if ((newuc->uc_flags & _UC_CPU) == 0) {
70 error = EINVAL;
71 goto fail;
72 }
73 error = cpu_mcontext32_validate(l, &newuc->uc_mcontext);
74 if (error)
75 goto fail;
76
77 const sigset_t *sigmask = newuc->uc_flags & _UC_SIGMASK ?
78 &newuc->uc_sigmask : &l->l_sigmask;
79
80 error = do_lwp_create(l, newuc, SCARG(uap, flags), &l2, sigmask,
81 &SS_INIT);
82 if (error != 0)
83 goto fail;
84
85 error = copyout(&l2->l_lid, SCARG_P32(uap, new_lwp),
86 sizeof(l2->l_lid));
87 if (error == 0) {
88 lwp_start(l2, SCARG(uap, flags));
89 return 0;
90 }
91 lwp_exit(l2);
92 fail:
93 kmem_free(newuc, sizeof(ucontext_t));
94 return error;
95 }
96
97 int
netbsd32__lwp_wait(struct lwp * l,const struct netbsd32__lwp_wait_args * uap,register_t * retval)98 netbsd32__lwp_wait(struct lwp *l, const struct netbsd32__lwp_wait_args *uap, register_t *retval)
99 {
100 /* {
101 syscallarg(lwpid_t) wait_for;
102 syscallarg(netbsd32_lwpidp) departed;
103 } */
104 struct sys__lwp_wait_args ua;
105
106 NETBSD32TO64_UAP(wait_for);
107 NETBSD32TOP_UAP(departed, lwpid_t);
108 return sys__lwp_wait(l, &ua, retval);
109 }
110
111 int
netbsd32__lwp_suspend(struct lwp * l,const struct netbsd32__lwp_suspend_args * uap,register_t * retval)112 netbsd32__lwp_suspend(struct lwp *l, const struct netbsd32__lwp_suspend_args *uap, register_t *retval)
113 {
114 /* {
115 syscallarg(lwpid_t) target;
116 } */
117 struct sys__lwp_suspend_args ua;
118
119 NETBSD32TO64_UAP(target);
120 return sys__lwp_suspend(l, &ua, retval);
121 }
122
123 int
netbsd32__lwp_continue(struct lwp * l,const struct netbsd32__lwp_continue_args * uap,register_t * retval)124 netbsd32__lwp_continue(struct lwp *l, const struct netbsd32__lwp_continue_args *uap, register_t *retval)
125 {
126 /* {
127 syscallarg(lwpid_t) target;
128 } */
129 struct sys__lwp_continue_args ua;
130
131 NETBSD32TO64_UAP(target);
132 return sys__lwp_continue(l, &ua, retval);
133 }
134
135 int
netbsd32__lwp_wakeup(struct lwp * l,const struct netbsd32__lwp_wakeup_args * uap,register_t * retval)136 netbsd32__lwp_wakeup(struct lwp *l, const struct netbsd32__lwp_wakeup_args *uap, register_t *retval)
137 {
138 /* {
139 syscallarg(lwpid_t) target;
140 } */
141 struct sys__lwp_wakeup_args ua;
142
143 NETBSD32TO64_UAP(target);
144 return sys__lwp_wakeup(l, &ua, retval);
145 }
146
147 int
netbsd32__lwp_setprivate(struct lwp * l,const struct netbsd32__lwp_setprivate_args * uap,register_t * retval)148 netbsd32__lwp_setprivate(struct lwp *l, const struct netbsd32__lwp_setprivate_args *uap, register_t *retval)
149 {
150 /* {
151 syscallarg(netbsd32_voidp) ptr;
152 } */
153 struct sys__lwp_setprivate_args ua;
154
155 NETBSD32TOP_UAP(ptr, void);
156 return sys__lwp_setprivate(l, &ua, retval);
157 }
158
159 int
netbsd32____lwp_park60(struct lwp * l,const struct netbsd32____lwp_park60_args * uap,register_t * retval)160 netbsd32____lwp_park60(struct lwp *l,
161 const struct netbsd32____lwp_park60_args *uap, register_t *retval)
162 {
163 /* {
164 syscallarg(const netbsd32_clockid_t) clock_id;
165 syscallarg(int) flags;
166 syscallarg(const netbsd32_timespec50p) ts;
167 syscallarg(netbsd32_lwpid_t) unpark;
168 syscallarg(netbsd32_voidp) hint;
169 syscallarg(netbsd32_voidp) unparkhint;
170 } */
171 struct timespec ts, *tsp;
172 struct netbsd32_timespec ts32;
173 int ret;
174 int error;
175
176 if (SCARG_P32(uap, ts) == NULL)
177 tsp = NULL;
178 else {
179 error = copyin(SCARG_P32(uap, ts), &ts32, sizeof ts32);
180 if (error != 0)
181 return error;
182 netbsd32_to_timespec(&ts32, &ts);
183 tsp = &ts;
184 }
185
186 if (SCARG(uap, unpark) != 0) {
187 error = lwp_unpark(&SCARG(uap, unpark), 1);
188 if (error != 0)
189 return error;
190 }
191
192 ret = lwp_park(SCARG(uap, clock_id), SCARG(uap, flags), tsp);
193 if (SCARG_P32(uap, ts) != NULL && (SCARG(uap, flags) & TIMER_ABSTIME) == 0) {
194 netbsd32_from_timespec(&ts, &ts32);
195 (void)copyout(&ts32, SCARG_P32(uap, ts), sizeof(ts32));
196 }
197 return ret;
198 }
199
200 int
netbsd32__lwp_kill(struct lwp * l,const struct netbsd32__lwp_kill_args * uap,register_t * retval)201 netbsd32__lwp_kill(struct lwp *l, const struct netbsd32__lwp_kill_args *uap, register_t *retval)
202 {
203 /* {
204 syscallarg(lwpid_t) target;
205 syscallarg(int) signo;
206 } */
207 struct sys__lwp_kill_args ua;
208
209 NETBSD32TO64_UAP(target);
210 NETBSD32TO64_UAP(signo);
211 return sys__lwp_kill(l, &ua, retval);
212 }
213 int
netbsd32__lwp_detach(struct lwp * l,const struct netbsd32__lwp_detach_args * uap,register_t * retval)214 netbsd32__lwp_detach(struct lwp *l, const struct netbsd32__lwp_detach_args *uap, register_t *retval)
215 {
216 /* {
217 syscallarg(lwpid_t) target;
218 } */
219 struct sys__lwp_detach_args ua;
220
221 NETBSD32TO64_UAP(target);
222 return sys__lwp_detach(l, &ua, retval);
223 }
224
225 int
netbsd32__lwp_unpark(struct lwp * l,const struct netbsd32__lwp_unpark_args * uap,register_t * retval)226 netbsd32__lwp_unpark(struct lwp *l, const struct netbsd32__lwp_unpark_args *uap, register_t *retval)
227 {
228 /* {
229 syscallarg(lwpid_t) target;
230 syscallarg(netbsd32_voidp) hint;
231 } */
232 struct sys__lwp_unpark_args ua;
233
234 NETBSD32TO64_UAP(target);
235 NETBSD32TOP_UAP(hint, void);
236 return sys__lwp_unpark(l, &ua, retval);
237 }
238
239 int
netbsd32__lwp_unpark_all(struct lwp * l,const struct netbsd32__lwp_unpark_all_args * uap,register_t * retval)240 netbsd32__lwp_unpark_all(struct lwp *l, const struct netbsd32__lwp_unpark_all_args *uap, register_t *retval)
241 {
242 /* {
243 syscallarg(const netbsd32_lwpidp) targets;
244 syscallarg(netbsd32_size_t) ntargets;
245 syscallarg(netbsd32_voidp) hint;
246 } */
247 struct sys__lwp_unpark_all_args ua;
248
249 NETBSD32TOP_UAP(targets, const lwpid_t);
250 NETBSD32TOX_UAP(ntargets, size_t);
251 NETBSD32TOP_UAP(hint, void);
252 return sys__lwp_unpark_all(l, &ua, retval);
253 }
254
255 int
netbsd32__lwp_setname(struct lwp * l,const struct netbsd32__lwp_setname_args * uap,register_t * retval)256 netbsd32__lwp_setname(struct lwp *l, const struct netbsd32__lwp_setname_args *uap, register_t *retval)
257 {
258 /* {
259 syscallarg(lwpid_t) target;
260 syscallarg(const netbsd32_charp) name;
261 } */
262 struct sys__lwp_setname_args ua;
263
264 NETBSD32TO64_UAP(target);
265 NETBSD32TOP_UAP(name, char *);
266 return sys__lwp_setname(l, &ua, retval);
267 }
268
269 int
netbsd32__lwp_getname(struct lwp * l,const struct netbsd32__lwp_getname_args * uap,register_t * retval)270 netbsd32__lwp_getname(struct lwp *l, const struct netbsd32__lwp_getname_args *uap, register_t *retval)
271 {
272 /* {
273 syscallarg(lwpid_t) target;
274 syscallarg(netbsd32_charp) name;
275 syscallarg(netbsd32_size_t) len;
276 } */
277 struct sys__lwp_getname_args ua;
278
279 NETBSD32TO64_UAP(target);
280 NETBSD32TOP_UAP(name, char *);
281 NETBSD32TOX_UAP(len, size_t);
282 return sys__lwp_getname(l, &ua, retval);
283 }
284
285 int
netbsd32__lwp_ctl(struct lwp * l,const struct netbsd32__lwp_ctl_args * uap,register_t * retval)286 netbsd32__lwp_ctl(struct lwp *l, const struct netbsd32__lwp_ctl_args *uap, register_t *retval)
287 {
288 /* {
289 syscallarg(int) features;
290 syscallarg(netbsd32_pointer_t) address;
291 } */
292 netbsd32_pointer_t vaddr32;
293 int error, features;
294 vaddr_t vaddr;
295
296 features = SCARG(uap, features);
297 features &= ~(LWPCTL_FEATURE_CURCPU | LWPCTL_FEATURE_PCTR);
298 if (features != 0)
299 return ENODEV;
300 if ((error = lwp_ctl_alloc(&vaddr)) != 0)
301 return error;
302 NETBSD32PTR32(vaddr32, (void *)vaddr);
303 return copyout(&vaddr32, SCARG_P32(uap, address), sizeof(vaddr32));
304 }
305