| 1 | /* $NetBSD: netbsd32_ipc.c,v 1.18 2015/12/03 10:38:21 pgoyette Exp $ */ |
| 2 | |
| 3 | /* |
| 4 | * Copyright (c) 1998, 2001 Matthew R. Green |
| 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 AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| 17 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| 18 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| 19 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 20 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
| 21 | * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| 22 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
| 23 | * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| 24 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 25 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 26 | * SUCH DAMAGE. |
| 27 | */ |
| 28 | |
| 29 | #include <sys/cdefs.h> |
| 30 | __KERNEL_RCSID(0, "$NetBSD: netbsd32_ipc.c,v 1.18 2015/12/03 10:38:21 pgoyette Exp $" ); |
| 31 | |
| 32 | #if defined(_KERNEL_OPT) |
| 33 | #include "opt_sysv.h" |
| 34 | #endif |
| 35 | |
| 36 | #include <sys/param.h> |
| 37 | #include <sys/systm.h> |
| 38 | #include <sys/ipc.h> |
| 39 | #include <sys/msg.h> |
| 40 | #include <sys/sem.h> |
| 41 | #include <sys/shm.h> |
| 42 | #include <sys/mount.h> |
| 43 | #include <sys/module.h> |
| 44 | #include <sys/dirent.h> |
| 45 | #include <sys/syscallvar.h> |
| 46 | |
| 47 | #include <sys/syscallargs.h> |
| 48 | #include <sys/proc.h> |
| 49 | |
| 50 | #include <compat/netbsd32/netbsd32.h> |
| 51 | #include <compat/netbsd32/netbsd32_syscall.h> |
| 52 | #include <compat/netbsd32/netbsd32_syscallargs.h> |
| 53 | #include <compat/netbsd32/netbsd32_conv.h> |
| 54 | |
| 55 | extern struct emul emul_netbsd32; |
| 56 | |
| 57 | #define _PKG_ENTRY(name) \ |
| 58 | { NETBSD32_SYS_ ## name, 0, (sy_call_t *)name } |
| 59 | |
| 60 | #define _PKG_ENTRY2(code, name) \ |
| 61 | { NETBSD32_SYS_ ## code, 0, (sy_call_t *)name } |
| 62 | |
| 63 | static const struct syscall_package compat_sysvipc_syscalls[] = { |
| 64 | #if defined(SYSVSEM) |
| 65 | _PKG_ENTRY(netbsd32_____semctl50), |
| 66 | _PKG_ENTRY(netbsd32_semget), |
| 67 | _PKG_ENTRY(netbsd32_semop), |
| 68 | _PKG_ENTRY(netbsd32_semconfig), |
| 69 | #if defined(COMPAT_10) |
| 70 | _PKG_ENTRY2(compat_10_osemsys, compat_10_netbsd32_semsys), |
| 71 | #endif |
| 72 | #if defined(COMPAT_14) |
| 73 | _PKG_ENTRY(compat_14_netbsd32___semctl), |
| 74 | #endif |
| 75 | #if defined(COMPAT_50) |
| 76 | _PKG_ENTRY(compat_50_netbsd32___semctl14), |
| 77 | #endif |
| 78 | #endif /* SYSVSEM */ |
| 79 | |
| 80 | #if defined(SYSVSHM) |
| 81 | _PKG_ENTRY(netbsd32_shmat), |
| 82 | _PKG_ENTRY(netbsd32___shmctl50), |
| 83 | _PKG_ENTRY(netbsd32_shmdt), |
| 84 | _PKG_ENTRY(netbsd32_shmget), |
| 85 | #if defined(COMPAT_10) |
| 86 | _PKG_ENTRY2(compat_10_oshmsys, compat_10_netbsd32_shmsys), |
| 87 | #endif |
| 88 | #if defined(COMPAT_14) |
| 89 | _PKG_ENTRY(compat_14_netbsd32_shmctl), |
| 90 | #endif |
| 91 | #if defined(COMPAT_50) |
| 92 | _PKG_ENTRY(compat_50_netbsd32___shmctl13), |
| 93 | #endif |
| 94 | #endif /* SYSVSHM */ |
| 95 | |
| 96 | #if defined(SYSVMSG) |
| 97 | _PKG_ENTRY(netbsd32___msgctl50), |
| 98 | _PKG_ENTRY(netbsd32_msgget), |
| 99 | _PKG_ENTRY(netbsd32_msgsnd), |
| 100 | _PKG_ENTRY(netbsd32_msgrcv), |
| 101 | #if defined(COMPAT_10) |
| 102 | _PKG_ENTRY2(compat_10_omsgsys, compat_10_netbsd32_msgsys), |
| 103 | #endif |
| 104 | #if defined(COMPAT_14) |
| 105 | _PKG_ENTRY(compat_14_netbsd32_msgctl), |
| 106 | #endif |
| 107 | #if defined(COMPAT_50) |
| 108 | _PKG_ENTRY(compat_50_netbsd32___msgctl13), |
| 109 | #endif |
| 110 | #endif /* SYSVMSG */ |
| 111 | { 0, 0, NULL } |
| 112 | }; |
| 113 | |
| 114 | MODULE(MODULE_CLASS_EXEC, compat_netbsd32_sysvipc, "sysv_ipc,compat_netbsd32" ); |
| 115 | |
| 116 | static int |
| 117 | compat_netbsd32_sysvipc_modcmd(modcmd_t cmd, void *arg) |
| 118 | { |
| 119 | int error; |
| 120 | |
| 121 | switch (cmd) { |
| 122 | case MODULE_CMD_INIT: |
| 123 | error = syscall_establish(&emul_netbsd32, |
| 124 | compat_sysvipc_syscalls); |
| 125 | break; |
| 126 | case MODULE_CMD_FINI: |
| 127 | error = syscall_disestablish(&emul_netbsd32, |
| 128 | compat_sysvipc_syscalls); |
| 129 | break; |
| 130 | default: |
| 131 | error = ENOTTY; |
| 132 | break; |
| 133 | } |
| 134 | return error; |
| 135 | } |
| 136 | |
| 137 | |
| 138 | #if defined(SYSVSEM) |
| 139 | |
| 140 | int |
| 141 | netbsd32_____semctl50(struct lwp *l, const struct netbsd32_____semctl50_args *uap, register_t *retval) |
| 142 | { |
| 143 | /* { |
| 144 | syscallarg(int) semid; |
| 145 | syscallarg(int) semnum; |
| 146 | syscallarg(int) cmd; |
| 147 | syscallarg(netbsd32_semunp_t) arg; |
| 148 | } */ |
| 149 | struct semid_ds sembuf; |
| 150 | struct netbsd32_semid_ds sembuf32; |
| 151 | int cmd, error; |
| 152 | void *pass_arg; |
| 153 | union __semun karg; |
| 154 | union netbsd32_semun karg32; |
| 155 | |
| 156 | cmd = SCARG(uap, cmd); |
| 157 | |
| 158 | switch (cmd) { |
| 159 | case IPC_SET: |
| 160 | case IPC_STAT: |
| 161 | pass_arg = &sembuf; |
| 162 | break; |
| 163 | |
| 164 | case GETALL: |
| 165 | case SETVAL: |
| 166 | case SETALL: |
| 167 | pass_arg = &karg; |
| 168 | break; |
| 169 | default: |
| 170 | pass_arg = NULL; |
| 171 | break; |
| 172 | } |
| 173 | |
| 174 | if (pass_arg) { |
| 175 | error = copyin(SCARG_P32(uap, arg), &karg32, sizeof(karg32)); |
| 176 | if (error) |
| 177 | return error; |
| 178 | if (pass_arg == &karg) { |
| 179 | switch (cmd) { |
| 180 | case GETALL: |
| 181 | case SETALL: |
| 182 | karg.array = NETBSD32PTR64(karg32.array); |
| 183 | break; |
| 184 | case SETVAL: |
| 185 | karg.val = karg32.val; |
| 186 | break; |
| 187 | } |
| 188 | } |
| 189 | if (cmd == IPC_SET) { |
| 190 | error = copyin(NETBSD32PTR64(karg32.buf), &sembuf32, |
| 191 | sizeof(sembuf32)); |
| 192 | if (error) |
| 193 | return (error); |
| 194 | netbsd32_to_semid_ds(&sembuf32, &sembuf); |
| 195 | } |
| 196 | } |
| 197 | |
| 198 | error = semctl1(l, SCARG(uap, semid), SCARG(uap, semnum), cmd, |
| 199 | pass_arg, retval); |
| 200 | |
| 201 | if (error == 0 && cmd == IPC_STAT) { |
| 202 | netbsd32_from_semid_ds(&sembuf, &sembuf32); |
| 203 | error = copyout(&sembuf32, NETBSD32PTR64(karg32.buf), |
| 204 | sizeof(sembuf32)); |
| 205 | } |
| 206 | |
| 207 | return (error); |
| 208 | } |
| 209 | |
| 210 | int |
| 211 | netbsd32_semget(struct lwp *l, const struct netbsd32_semget_args *uap, register_t *retval) |
| 212 | { |
| 213 | /* { |
| 214 | syscallarg(netbsd32_key_t) key; |
| 215 | syscallarg(int) nsems; |
| 216 | syscallarg(int) semflg; |
| 217 | } */ |
| 218 | struct sys_semget_args ua; |
| 219 | |
| 220 | NETBSD32TOX_UAP(key, key_t); |
| 221 | NETBSD32TO64_UAP(nsems); |
| 222 | NETBSD32TO64_UAP(semflg); |
| 223 | return (sys_semget(l, &ua, retval)); |
| 224 | } |
| 225 | |
| 226 | int |
| 227 | netbsd32_semop(struct lwp *l, const struct netbsd32_semop_args *uap, register_t *retval) |
| 228 | { |
| 229 | /* { |
| 230 | syscallarg(int) semid; |
| 231 | syscallarg(netbsd32_sembufp_t) sops; |
| 232 | syscallarg(netbsd32_size_t) nsops; |
| 233 | } */ |
| 234 | struct sys_semop_args ua; |
| 235 | |
| 236 | NETBSD32TO64_UAP(semid); |
| 237 | NETBSD32TOP_UAP(sops, struct sembuf); |
| 238 | NETBSD32TOX_UAP(nsops, size_t); |
| 239 | return (sys_semop(l, &ua, retval)); |
| 240 | } |
| 241 | |
| 242 | int |
| 243 | netbsd32_semconfig(struct lwp *l, const struct netbsd32_semconfig_args *uap, register_t *retval) |
| 244 | { |
| 245 | /* { |
| 246 | syscallarg(int) flag; |
| 247 | } */ |
| 248 | struct sys_semconfig_args ua; |
| 249 | |
| 250 | NETBSD32TO64_UAP(flag); |
| 251 | return (sys_semconfig(l, &ua, retval)); |
| 252 | } |
| 253 | #endif /* SYSVSEM */ |
| 254 | |
| 255 | #if defined(SYSVMSG) |
| 256 | |
| 257 | int |
| 258 | netbsd32___msgctl50(struct lwp *l, const struct netbsd32___msgctl50_args *uap, |
| 259 | register_t *retval) |
| 260 | { |
| 261 | /* { |
| 262 | syscallarg(int) msqid; |
| 263 | syscallarg(int) cmd; |
| 264 | syscallarg(netbsd32_msqid_dsp_t) buf; |
| 265 | } */ |
| 266 | struct msqid_ds ds; |
| 267 | struct netbsd32_msqid_ds ds32; |
| 268 | int error, cmd; |
| 269 | |
| 270 | cmd = SCARG(uap, cmd); |
| 271 | if (cmd == IPC_SET) { |
| 272 | error = copyin(SCARG_P32(uap, buf), &ds32, sizeof(ds32)); |
| 273 | if (error) |
| 274 | return error; |
| 275 | netbsd32_to_msqid_ds(&ds32, &ds); |
| 276 | } |
| 277 | |
| 278 | error = msgctl1(l, SCARG(uap, msqid), cmd, |
| 279 | (cmd == IPC_SET || cmd == IPC_STAT) ? &ds : NULL); |
| 280 | |
| 281 | if (error == 0 && cmd == IPC_STAT) { |
| 282 | netbsd32_from_msqid_ds(&ds, &ds32); |
| 283 | error = copyout(&ds32, SCARG_P32(uap, buf), sizeof(ds32)); |
| 284 | } |
| 285 | |
| 286 | return error; |
| 287 | } |
| 288 | |
| 289 | int |
| 290 | netbsd32_msgget(struct lwp *l, const struct netbsd32_msgget_args *uap, register_t *retval) |
| 291 | { |
| 292 | /* { |
| 293 | syscallarg(netbsd32_key_t) key; |
| 294 | syscallarg(int) msgflg; |
| 295 | } */ |
| 296 | struct sys_msgget_args ua; |
| 297 | |
| 298 | NETBSD32TOX_UAP(key, key_t); |
| 299 | NETBSD32TO64_UAP(msgflg); |
| 300 | return sys_msgget(l, &ua, retval); |
| 301 | } |
| 302 | |
| 303 | static int |
| 304 | netbsd32_msgsnd_fetch_type(const void *src, void *dst, size_t size) |
| 305 | { |
| 306 | netbsd32_long l32; |
| 307 | long *l = dst; |
| 308 | int error; |
| 309 | |
| 310 | KASSERT(size == sizeof(netbsd32_long)); |
| 311 | |
| 312 | error = copyin(src, &l32, sizeof(l32)); |
| 313 | if (!error) |
| 314 | *l = l32; |
| 315 | return error; |
| 316 | } |
| 317 | |
| 318 | int |
| 319 | netbsd32_msgsnd(struct lwp *l, const struct netbsd32_msgsnd_args *uap, register_t *retval) |
| 320 | { |
| 321 | /* { |
| 322 | syscallarg(int) msqid; |
| 323 | syscallarg(const netbsd32_voidp) msgp; |
| 324 | syscallarg(netbsd32_size_t) msgsz; |
| 325 | syscallarg(int) msgflg; |
| 326 | } */ |
| 327 | |
| 328 | return msgsnd1(l, SCARG(uap, msqid), |
| 329 | SCARG_P32(uap, msgp), SCARG(uap, msgsz), |
| 330 | SCARG(uap, msgflg), sizeof(netbsd32_long), |
| 331 | netbsd32_msgsnd_fetch_type); |
| 332 | } |
| 333 | |
| 334 | static int |
| 335 | netbsd32_msgrcv_put_type(const void *src, void *dst, size_t size) |
| 336 | { |
| 337 | netbsd32_long l32; |
| 338 | const long *l = src; |
| 339 | |
| 340 | KASSERT(size == sizeof(netbsd32_long)); |
| 341 | |
| 342 | l32 = (netbsd32_long)(*l); |
| 343 | return copyout(&l32, dst, sizeof(l32)); |
| 344 | } |
| 345 | |
| 346 | int |
| 347 | netbsd32_msgrcv(struct lwp *l, const struct netbsd32_msgrcv_args *uap, register_t *retval) |
| 348 | { |
| 349 | /* { |
| 350 | syscallarg(int) msqid; |
| 351 | syscallarg(netbsd32_voidp) msgp; |
| 352 | syscallarg(netbsd32_size_t) msgsz; |
| 353 | syscallarg(netbsd32_long) msgtyp; |
| 354 | syscallarg(int) msgflg; |
| 355 | } */ |
| 356 | |
| 357 | return msgrcv1(l, SCARG(uap, msqid), |
| 358 | SCARG_P32(uap, msgp), SCARG(uap, msgsz), |
| 359 | SCARG(uap, msgtyp), SCARG(uap, msgflg), sizeof(netbsd32_long), |
| 360 | netbsd32_msgrcv_put_type, retval); |
| 361 | } |
| 362 | #endif /* SYSVMSG */ |
| 363 | |
| 364 | #if defined(SYSVSHM) |
| 365 | |
| 366 | int |
| 367 | netbsd32_shmat(struct lwp *l, const struct netbsd32_shmat_args *uap, register_t *retval) |
| 368 | { |
| 369 | /* { |
| 370 | syscallarg(int) shmid; |
| 371 | syscallarg(const netbsd32_voidp) shmaddr; |
| 372 | syscallarg(int) shmflg; |
| 373 | } */ |
| 374 | struct sys_shmat_args ua; |
| 375 | |
| 376 | NETBSD32TO64_UAP(shmid); |
| 377 | NETBSD32TOP_UAP(shmaddr, void); |
| 378 | NETBSD32TO64_UAP(shmflg); |
| 379 | return sys_shmat(l, &ua, retval); |
| 380 | } |
| 381 | |
| 382 | int |
| 383 | netbsd32___shmctl50(struct lwp *l, const struct netbsd32___shmctl50_args *uap, |
| 384 | register_t *retval) |
| 385 | { |
| 386 | /* { |
| 387 | syscallarg(int) shmid; |
| 388 | syscallarg(int) cmd; |
| 389 | syscallarg(netbsd32_shmid_dsp_t) buf; |
| 390 | } */ |
| 391 | struct shmid_ds ds; |
| 392 | struct netbsd32_shmid_ds ds32; |
| 393 | int error, cmd; |
| 394 | |
| 395 | cmd = SCARG(uap, cmd); |
| 396 | if (cmd == IPC_SET) { |
| 397 | error = copyin(SCARG_P32(uap, buf), &ds32, sizeof(ds32)); |
| 398 | if (error) |
| 399 | return error; |
| 400 | netbsd32_to_shmid_ds(&ds32, &ds); |
| 401 | } |
| 402 | |
| 403 | error = shmctl1(l, SCARG(uap, shmid), cmd, |
| 404 | (cmd == IPC_SET || cmd == IPC_STAT) ? &ds : NULL); |
| 405 | |
| 406 | if (error == 0 && cmd == IPC_STAT) { |
| 407 | netbsd32_from_shmid_ds(&ds, &ds32); |
| 408 | error = copyout(&ds32, SCARG_P32(uap, buf), sizeof(ds32)); |
| 409 | } |
| 410 | |
| 411 | return error; |
| 412 | } |
| 413 | |
| 414 | int |
| 415 | netbsd32_shmdt(struct lwp *l, const struct netbsd32_shmdt_args *uap, register_t *retval) |
| 416 | { |
| 417 | /* { |
| 418 | syscallarg(const netbsd32_voidp) shmaddr; |
| 419 | } */ |
| 420 | struct sys_shmdt_args ua; |
| 421 | |
| 422 | NETBSD32TOP_UAP(shmaddr, const char); |
| 423 | return (sys_shmdt(l, &ua, retval)); |
| 424 | } |
| 425 | |
| 426 | int |
| 427 | netbsd32_shmget(struct lwp *l, const struct netbsd32_shmget_args *uap, register_t *retval) |
| 428 | { |
| 429 | /* { |
| 430 | syscallarg(netbsd32_key_t) key; |
| 431 | syscallarg(netbsd32_size_t) size; |
| 432 | syscallarg(int) shmflg; |
| 433 | } */ |
| 434 | struct sys_shmget_args ua; |
| 435 | |
| 436 | NETBSD32TOX_UAP(key, key_t); |
| 437 | NETBSD32TOX_UAP(size, size_t); |
| 438 | NETBSD32TO64_UAP(shmflg); |
| 439 | return (sys_shmget(l, &ua, retval)); |
| 440 | } |
| 441 | #endif /* SYSVSHM */ |
| 442 | |