1 /* $NetBSD: kern_ipc_10.c,v 1.26 2019/01/27 02:08:39 pgoyette Exp $ */
2
3 /*
4 * Copyright (c) 1994 Adam Glass and Charles M. Hannum. All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. All advertising materials mentioning features or use of this software
15 * must display the following acknowledgement:
16 * This product includes software developed by Adam Glass and Charles M.
17 * Hannum.
18 * 4. The names of the authors may not be used to endorse or promote products
19 * derived from this software without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
24 * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 */
32
33 #include <sys/cdefs.h>
34 __KERNEL_RCSID(0, "$NetBSD: kern_ipc_10.c,v 1.26 2019/01/27 02:08:39 pgoyette Exp $");
35
36 #ifdef _KERNEL_OPT
37 #include "opt_compat_netbsd.h"
38 #include "opt_sysv.h"
39 #endif
40
41 #include <sys/param.h>
42 #include <sys/systm.h>
43 #include <sys/kernel.h>
44 #include <sys/proc.h>
45 #include <sys/sem.h>
46 #include <sys/shm.h>
47
48 #include <sys/mount.h>
49 #include <sys/syscallargs.h>
50
51 #include <compat/common/compat_util.h>
52 #include <compat/sys/shm.h>
53 #include <compat/sys/sem.h>
54
55 #if defined(SYSVSEM) && !defined(_LP64)
56 int
compat_10_sys_semsys(struct lwp * l,const struct compat_10_sys_semsys_args * uap,register_t * retval)57 compat_10_sys_semsys(struct lwp *l, const struct compat_10_sys_semsys_args *uap, register_t *retval)
58 {
59 /* {
60 syscallarg(int) which;
61 syscallarg(int) a2;
62 syscallarg(int) a3;
63 syscallarg(int) a4;
64 syscallarg(int) a5;
65 } */
66 struct sys_semget_args /* {
67 syscallarg(key_t) key;
68 syscallarg(int) nsems;
69 syscallarg(int) semflg;
70 } */ semget_args;
71 struct sys_semop_args /* {
72 syscallarg(int) semid;
73 syscallarg(struct sembuf *) sops;
74 syscallarg(u_int) nsops;
75 } */ semop_args;
76 struct sys_semconfig_args /* {
77 syscallarg(int) flag;
78 } */ semconfig_args;
79 struct semid_ds sembuf;
80 struct semid_ds14 osembuf;
81 void *pass_arg;
82 int a5 = SCARG(uap, a5);
83 int error;
84
85 switch (SCARG(uap, which)) {
86 case 0: /* __semctl() */
87 #define semctl_semid SCARG(uap, a2)
88 #define semctl_semnum SCARG(uap, a3)
89 #define semctl_cmd SCARG(uap, a4)
90 #define semctl_arg ((union __semun *)&a5)
91 pass_arg = get_semctl_arg(semctl_cmd, &sembuf, semctl_arg);
92 if (semctl_cmd == IPC_SET) {
93 error = copyin(semctl_arg->buf, &osembuf, sizeof osembuf);
94 if (error != 0)
95 return error;
96 __semid_ds14_to_native(&osembuf, &sembuf);
97 }
98 error = semctl1(l, semctl_semid, semctl_semnum, semctl_cmd,
99 pass_arg, retval);
100 if (error == 0 && semctl_cmd == IPC_STAT) {
101 __native_to_semid_ds14(&sembuf, &osembuf);
102 error = copyout(&osembuf, semctl_arg->buf, sizeof(osembuf));
103 }
104 return error;
105 #undef semctl_semid
106 #undef semctl_semnum
107 #undef semctl_cmd
108 #undef semctl_arg
109
110 case 1: /* semget() */
111 SCARG(&semget_args, key) = SCARG(uap, a2);
112 SCARG(&semget_args, nsems) = SCARG(uap, a3);
113 SCARG(&semget_args, semflg) = SCARG(uap, a4);
114 return (sys_semget(l, &semget_args, retval));
115
116 case 2: /* semop() */
117 SCARG(&semop_args, semid) = SCARG(uap, a2);
118 SCARG(&semop_args, sops) =
119 (struct sembuf *)(u_long)SCARG(uap, a3);
120 SCARG(&semop_args, nsops) = SCARG(uap, a4);
121 return (sys_semop(l, &semop_args, retval));
122
123 case 3: /* semconfig() */
124 SCARG(&semconfig_args, flag) = SCARG(uap, a2);
125 return (sys_semconfig(l, &semconfig_args, retval));
126
127 default:
128 return (EINVAL);
129 }
130 }
131 #endif
132
133 #if defined(SYSVSHM) && !defined(_LP64)
134 int
compat_10_sys_shmsys(struct lwp * l,const struct compat_10_sys_shmsys_args * uap,register_t * retval)135 compat_10_sys_shmsys(struct lwp *l, const struct compat_10_sys_shmsys_args *uap, register_t *retval)
136 {
137 /* {
138 syscallarg(int) which;
139 syscallarg(int) a2;
140 syscallarg(int) a3;
141 syscallarg(int) a4;
142 } */
143 struct sys_shmat_args /* {
144 syscallarg(int) shmid;
145 syscallarg(void *) shmaddr;
146 syscallarg(int) shmflg;
147 } */ shmat_args;
148 struct compat_14_sys_shmctl_args /* {
149 syscallarg(int) shmid;
150 syscallarg(int) cmd;
151 syscallarg(struct shmid14_ds *) buf;
152 } */ shmctl_args;
153 struct sys_shmdt_args /* {
154 syscallarg(void *) shmaddr;
155 } */ shmdt_args;
156 struct sys_shmget_args /* {
157 syscallarg(key_t) key;
158 syscallarg(int) size;
159 syscallarg(int) shmflg;
160 } */ shmget_args;
161
162 switch (SCARG(uap, which)) {
163 case 0: /* shmat() */
164 SCARG(&shmat_args, shmid) = SCARG(uap, a2);
165 SCARG(&shmat_args, shmaddr) =
166 (void *)(u_long)SCARG(uap, a3);
167 SCARG(&shmat_args, shmflg) = SCARG(uap, a4);
168 return (sys_shmat(l, &shmat_args, retval));
169
170 case 1: /* shmctl() */
171 SCARG(&shmctl_args, shmid) = SCARG(uap, a2);
172 SCARG(&shmctl_args, cmd) = SCARG(uap, a3);
173 SCARG(&shmctl_args, buf) =
174 (struct shmid_ds14 *)(u_long)SCARG(uap, a4);
175 return (compat_14_sys_shmctl(l, &shmctl_args, retval));
176
177 case 2: /* shmdt() */
178 SCARG(&shmdt_args, shmaddr) =
179 (void *)(u_long)SCARG(uap, a2);
180 return (sys_shmdt(l, &shmdt_args, retval));
181
182 case 3: /* shmget() */
183 SCARG(&shmget_args, key) = SCARG(uap, a2);
184 SCARG(&shmget_args, size) = SCARG(uap, a3);
185 SCARG(&shmget_args, shmflg) = SCARG(uap, a4);
186 return (sys_shmget(l, &shmget_args, retval));
187
188 default:
189 return (EINVAL);
190 }
191 }
192 #endif
193
194 #if defined(SYSVMSG) && !defined(_LP64)
195 int
compat_10_sys_msgsys(struct lwp * l,const struct compat_10_sys_msgsys_args * uap,register_t * retval)196 compat_10_sys_msgsys(struct lwp *l, const struct compat_10_sys_msgsys_args *uap, register_t *retval)
197 {
198 /* {
199 syscallarg(int) which;
200 syscallarg(int) a2;
201 syscallarg(int) a3;
202 syscallarg(int) a4;
203 syscallarg(int) a5;
204 syscallarg(int) a6;
205 } */
206 struct compat_14_sys_msgctl_args /* {
207 syscallarg(int) msqid;
208 syscallarg(int) cmd;
209 syscallarg(struct msqid14_ds *) buf;
210 } */ msgctl_args;
211 struct sys_msgget_args /* {
212 syscallarg(key_t) key;
213 syscallarg(int) msgflg;
214 } */ msgget_args;
215 struct sys_msgsnd_args /* {
216 syscallarg(int) msqid;
217 syscallarg(void *) msgp;
218 syscallarg(size_t) msgsz;
219 syscallarg(int) msgflg;
220 } */ msgsnd_args;
221 struct sys_msgrcv_args /* {
222 syscallarg(int) msqid;
223 syscallarg(void *) msgp;
224 syscallarg(size_t) msgsz;
225 syscallarg(long) msgtyp;
226 syscallarg(int) msgflg;
227 } */ msgrcv_args;
228
229 switch (SCARG(uap, which)) {
230 case 0: /* msgctl()*/
231 SCARG(&msgctl_args, msqid) = SCARG(uap, a2);
232 SCARG(&msgctl_args, cmd) = SCARG(uap, a3);
233 SCARG(&msgctl_args, buf) =
234 (struct msqid_ds14 *)(u_long)SCARG(uap, a4);
235 return (compat_14_sys_msgctl(l, &msgctl_args, retval));
236
237 case 1: /* msgget() */
238 SCARG(&msgget_args, key) = SCARG(uap, a2);
239 SCARG(&msgget_args, msgflg) = SCARG(uap, a3);
240 return (sys_msgget(l, &msgget_args, retval));
241
242 case 2: /* msgsnd() */
243 SCARG(&msgsnd_args, msqid) = SCARG(uap, a2);
244 SCARG(&msgsnd_args, msgp) =
245 (void *)(u_long)SCARG(uap, a3);
246 SCARG(&msgsnd_args, msgsz) = SCARG(uap, a4);
247 SCARG(&msgsnd_args, msgflg) = SCARG(uap, a5);
248 return (sys_msgsnd(l, &msgsnd_args, retval));
249
250 case 3: /* msgrcv() */
251 SCARG(&msgrcv_args, msqid) = SCARG(uap, a2);
252 SCARG(&msgrcv_args, msgp) =
253 (void *)(u_long)SCARG(uap, a3);
254 SCARG(&msgrcv_args, msgsz) = SCARG(uap, a4);
255 SCARG(&msgrcv_args, msgtyp) = SCARG(uap, a5);
256 SCARG(&msgrcv_args, msgflg) = SCARG(uap, a6);
257 return (sys_msgrcv(l, &msgrcv_args, retval));
258
259 default:
260 return (EINVAL);
261 }
262 }
263 #endif
264