1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2000 Marcel Moolenaar 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 AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, 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 __FBSDID("$FreeBSD$"); 31 32 #include <sys/param.h> 33 #include <sys/capsicum.h> 34 #include <sys/fcntl.h> 35 #include <sys/file.h> 36 #include <sys/imgact.h> 37 #include <sys/lock.h> 38 #include <sys/malloc.h> 39 #include <sys/mman.h> 40 #include <sys/mutex.h> 41 #include <sys/priv.h> 42 #include <sys/proc.h> 43 #include <sys/queue.h> 44 #include <sys/resource.h> 45 #include <sys/resourcevar.h> 46 #include <sys/sched.h> 47 #include <sys/signalvar.h> 48 #include <sys/syscallsubr.h> 49 #include <sys/sysproto.h> 50 #include <sys/systm.h> 51 #include <sys/sx.h> 52 #include <sys/unistd.h> 53 #include <sys/wait.h> 54 55 #include <machine/frame.h> 56 #include <machine/psl.h> 57 #include <machine/segments.h> 58 #include <machine/sysarch.h> 59 60 #include <vm/pmap.h> 61 #include <vm/vm.h> 62 #include <vm/vm_map.h> 63 64 #include <i386/linux/linux.h> 65 #include <i386/linux/linux_proto.h> 66 #include <compat/linux/linux_emul.h> 67 #include <compat/linux/linux_ipc.h> 68 #include <compat/linux/linux_misc.h> 69 #include <compat/linux/linux_mmap.h> 70 #include <compat/linux/linux_signal.h> 71 #include <compat/linux/linux_util.h> 72 73 #include <i386/include/pcb.h> /* needed for pcb definition in linux_set_thread_area */ 74 75 #include "opt_posix.h" 76 77 extern struct sysentvec elf32_freebsd_sysvec; /* defined in i386/i386/elf_machdep.c */ 78 79 struct l_descriptor { 80 l_uint entry_number; 81 l_ulong base_addr; 82 l_uint limit; 83 l_uint seg_32bit:1; 84 l_uint contents:2; 85 l_uint read_exec_only:1; 86 l_uint limit_in_pages:1; 87 l_uint seg_not_present:1; 88 l_uint useable:1; 89 }; 90 91 struct l_old_select_argv { 92 l_int nfds; 93 l_fd_set *readfds; 94 l_fd_set *writefds; 95 l_fd_set *exceptfds; 96 struct l_timeval *timeout; 97 }; 98 99 int 100 linux_execve(struct thread *td, struct linux_execve_args *args) 101 { 102 struct image_args eargs; 103 char *newpath; 104 int error; 105 106 if (!LUSECONVPATH(td)) { 107 error = exec_copyin_args(&eargs, args->path, UIO_USERSPACE, 108 args->argp, args->envp); 109 } else { 110 LCONVPATHEXIST(td, args->path, &newpath); 111 error = exec_copyin_args(&eargs, newpath, UIO_SYSSPACE, 112 args->argp, args->envp); 113 LFREEPATH(newpath); 114 } 115 if (error == 0) 116 error = linux_common_execve(td, &eargs); 117 return (error); 118 } 119 120 struct l_ipc_kludge { 121 struct l_msgbuf *msgp; 122 l_long msgtyp; 123 }; 124 125 int 126 linux_ipc(struct thread *td, struct linux_ipc_args *args) 127 { 128 129 switch (args->what & 0xFFFF) { 130 case LINUX_SEMOP: { 131 struct linux_semop_args a; 132 133 a.semid = args->arg1; 134 a.tsops = PTRIN(args->ptr); 135 a.nsops = args->arg2; 136 return (linux_semop(td, &a)); 137 } 138 case LINUX_SEMGET: { 139 struct linux_semget_args a; 140 141 a.key = args->arg1; 142 a.nsems = args->arg2; 143 a.semflg = args->arg3; 144 return (linux_semget(td, &a)); 145 } 146 case LINUX_SEMCTL: { 147 struct linux_semctl_args a; 148 int error; 149 150 a.semid = args->arg1; 151 a.semnum = args->arg2; 152 a.cmd = args->arg3; 153 error = copyin(PTRIN(args->ptr), &a.arg, sizeof(a.arg)); 154 if (error) 155 return (error); 156 return (linux_semctl(td, &a)); 157 } 158 case LINUX_MSGSND: { 159 struct linux_msgsnd_args a; 160 161 a.msqid = args->arg1; 162 a.msgp = PTRIN(args->ptr); 163 a.msgsz = args->arg2; 164 a.msgflg = args->arg3; 165 return (linux_msgsnd(td, &a)); 166 } 167 case LINUX_MSGRCV: { 168 struct linux_msgrcv_args a; 169 170 a.msqid = args->arg1; 171 a.msgsz = args->arg2; 172 a.msgflg = args->arg3; 173 if ((args->what >> 16) == 0) { 174 struct l_ipc_kludge tmp; 175 int error; 176 177 if (args->ptr == 0) 178 return (EINVAL); 179 error = copyin(PTRIN(args->ptr), &tmp, sizeof(tmp)); 180 if (error) 181 return (error); 182 a.msgp = PTRIN(tmp.msgp); 183 a.msgtyp = tmp.msgtyp; 184 } else { 185 a.msgp = PTRIN(args->ptr); 186 a.msgtyp = args->arg5; 187 } 188 return (linux_msgrcv(td, &a)); 189 } 190 case LINUX_MSGGET: { 191 struct linux_msgget_args a; 192 193 a.key = args->arg1; 194 a.msgflg = args->arg2; 195 return (linux_msgget(td, &a)); 196 } 197 case LINUX_MSGCTL: { 198 struct linux_msgctl_args a; 199 200 a.msqid = args->arg1; 201 a.cmd = args->arg2; 202 a.buf = PTRIN(args->ptr); 203 return (linux_msgctl(td, &a)); 204 } 205 case LINUX_SHMAT: { 206 struct linux_shmat_args a; 207 l_uintptr_t addr; 208 int error; 209 210 a.shmid = args->arg1; 211 a.shmaddr = PTRIN(args->ptr); 212 a.shmflg = args->arg2; 213 error = linux_shmat(td, &a); 214 if (error != 0) 215 return (error); 216 addr = td->td_retval[0]; 217 error = copyout(&addr, PTRIN(args->arg3), sizeof(addr)); 218 td->td_retval[0] = 0; 219 return (error); 220 } 221 case LINUX_SHMDT: { 222 struct linux_shmdt_args a; 223 224 a.shmaddr = PTRIN(args->ptr); 225 return (linux_shmdt(td, &a)); 226 } 227 case LINUX_SHMGET: { 228 struct linux_shmget_args a; 229 230 a.key = args->arg1; 231 a.size = args->arg2; 232 a.shmflg = args->arg3; 233 return (linux_shmget(td, &a)); 234 } 235 case LINUX_SHMCTL: { 236 struct linux_shmctl_args a; 237 238 a.shmid = args->arg1; 239 a.cmd = args->arg2; 240 a.buf = PTRIN(args->ptr); 241 return (linux_shmctl(td, &a)); 242 } 243 default: 244 break; 245 } 246 247 return (EINVAL); 248 } 249 250 int 251 linux_old_select(struct thread *td, struct linux_old_select_args *args) 252 { 253 struct l_old_select_argv linux_args; 254 struct linux_select_args newsel; 255 int error; 256 257 error = copyin(args->ptr, &linux_args, sizeof(linux_args)); 258 if (error) 259 return (error); 260 261 newsel.nfds = linux_args.nfds; 262 newsel.readfds = linux_args.readfds; 263 newsel.writefds = linux_args.writefds; 264 newsel.exceptfds = linux_args.exceptfds; 265 newsel.timeout = linux_args.timeout; 266 return (linux_select(td, &newsel)); 267 } 268 269 int 270 linux_set_cloned_tls(struct thread *td, void *desc) 271 { 272 struct segment_descriptor sd; 273 struct l_user_desc info; 274 int idx, error; 275 int a[2]; 276 277 error = copyin(desc, &info, sizeof(struct l_user_desc)); 278 if (error) { 279 linux_msg(td, "set_cloned_tls copyin failed!"); 280 } else { 281 idx = info.entry_number; 282 283 /* 284 * looks like we're getting the idx we returned 285 * in the set_thread_area() syscall 286 */ 287 if (idx != 6 && idx != 3) { 288 linux_msg(td, "set_cloned_tls resetting idx!"); 289 idx = 3; 290 } 291 292 /* this doesnt happen in practice */ 293 if (idx == 6) { 294 /* we might copy out the entry_number as 3 */ 295 info.entry_number = 3; 296 error = copyout(&info, desc, sizeof(struct l_user_desc)); 297 if (error) 298 linux_msg(td, "set_cloned_tls copyout failed!"); 299 } 300 301 a[0] = LINUX_LDT_entry_a(&info); 302 a[1] = LINUX_LDT_entry_b(&info); 303 304 memcpy(&sd, &a, sizeof(a)); 305 /* set %gs */ 306 td->td_pcb->pcb_gsd = sd; 307 td->td_pcb->pcb_gs = GSEL(GUGS_SEL, SEL_UPL); 308 } 309 310 return (error); 311 } 312 313 int 314 linux_set_upcall_kse(struct thread *td, register_t stack) 315 { 316 317 if (stack) 318 td->td_frame->tf_esp = stack; 319 320 /* 321 * The newly created Linux thread returns 322 * to the user space by the same path that a parent do. 323 */ 324 td->td_frame->tf_eax = 0; 325 return (0); 326 } 327 328 int 329 linux_mmap2(struct thread *td, struct linux_mmap2_args *args) 330 { 331 332 return (linux_mmap_common(td, args->addr, args->len, args->prot, 333 args->flags, args->fd, (uint64_t)(uint32_t)args->pgoff * 334 PAGE_SIZE)); 335 } 336 337 int 338 linux_mmap(struct thread *td, struct linux_mmap_args *args) 339 { 340 int error; 341 struct l_mmap_argv linux_args; 342 343 error = copyin(args->ptr, &linux_args, sizeof(linux_args)); 344 if (error) 345 return (error); 346 347 return (linux_mmap_common(td, linux_args.addr, linux_args.len, 348 linux_args.prot, linux_args.flags, linux_args.fd, 349 (uint32_t)linux_args.pgoff)); 350 } 351 352 int 353 linux_mprotect(struct thread *td, struct linux_mprotect_args *uap) 354 { 355 356 return (linux_mprotect_common(td, PTROUT(uap->addr), uap->len, uap->prot)); 357 } 358 359 int 360 linux_madvise(struct thread *td, struct linux_madvise_args *uap) 361 { 362 363 return (linux_madvise_common(td, PTROUT(uap->addr), uap->len, uap->behav)); 364 } 365 366 int 367 linux_ioperm(struct thread *td, struct linux_ioperm_args *args) 368 { 369 int error; 370 struct i386_ioperm_args iia; 371 372 iia.start = args->start; 373 iia.length = args->length; 374 iia.enable = args->enable; 375 error = i386_set_ioperm(td, &iia); 376 return (error); 377 } 378 379 int 380 linux_iopl(struct thread *td, struct linux_iopl_args *args) 381 { 382 int error; 383 384 if (args->level < 0 || args->level > 3) 385 return (EINVAL); 386 if ((error = priv_check(td, PRIV_IO)) != 0) 387 return (error); 388 if ((error = securelevel_gt(td->td_ucred, 0)) != 0) 389 return (error); 390 td->td_frame->tf_eflags = (td->td_frame->tf_eflags & ~PSL_IOPL) | 391 (args->level * (PSL_IOPL / 3)); 392 return (0); 393 } 394 395 int 396 linux_modify_ldt(struct thread *td, struct linux_modify_ldt_args *uap) 397 { 398 int error; 399 struct i386_ldt_args ldt; 400 struct l_descriptor ld; 401 union descriptor desc; 402 int size, written; 403 404 switch (uap->func) { 405 case 0x00: /* read_ldt */ 406 ldt.start = 0; 407 ldt.descs = uap->ptr; 408 ldt.num = uap->bytecount / sizeof(union descriptor); 409 error = i386_get_ldt(td, &ldt); 410 td->td_retval[0] *= sizeof(union descriptor); 411 break; 412 case 0x02: /* read_default_ldt = 0 */ 413 size = 5*sizeof(struct l_desc_struct); 414 if (size > uap->bytecount) 415 size = uap->bytecount; 416 for (written = error = 0; written < size && error == 0; written++) 417 error = subyte((char *)uap->ptr + written, 0); 418 td->td_retval[0] = written; 419 break; 420 case 0x01: /* write_ldt */ 421 case 0x11: /* write_ldt */ 422 if (uap->bytecount != sizeof(ld)) 423 return (EINVAL); 424 425 error = copyin(uap->ptr, &ld, sizeof(ld)); 426 if (error) 427 return (error); 428 429 ldt.start = ld.entry_number; 430 ldt.descs = &desc; 431 ldt.num = 1; 432 desc.sd.sd_lolimit = (ld.limit & 0x0000ffff); 433 desc.sd.sd_hilimit = (ld.limit & 0x000f0000) >> 16; 434 desc.sd.sd_lobase = (ld.base_addr & 0x00ffffff); 435 desc.sd.sd_hibase = (ld.base_addr & 0xff000000) >> 24; 436 desc.sd.sd_type = SDT_MEMRO | ((ld.read_exec_only ^ 1) << 1) | 437 (ld.contents << 2); 438 desc.sd.sd_dpl = 3; 439 desc.sd.sd_p = (ld.seg_not_present ^ 1); 440 desc.sd.sd_xx = 0; 441 desc.sd.sd_def32 = ld.seg_32bit; 442 desc.sd.sd_gran = ld.limit_in_pages; 443 error = i386_set_ldt(td, &ldt, &desc); 444 break; 445 default: 446 error = ENOSYS; 447 break; 448 } 449 450 if (error == EOPNOTSUPP) { 451 linux_msg(td, "modify_ldt needs kernel option USER_LDT"); 452 error = ENOSYS; 453 } 454 455 return (error); 456 } 457 458 int 459 linux_sigaction(struct thread *td, struct linux_sigaction_args *args) 460 { 461 l_osigaction_t osa; 462 l_sigaction_t act, oact; 463 int error; 464 465 if (args->nsa != NULL) { 466 error = copyin(args->nsa, &osa, sizeof(l_osigaction_t)); 467 if (error) 468 return (error); 469 act.lsa_handler = osa.lsa_handler; 470 act.lsa_flags = osa.lsa_flags; 471 act.lsa_restorer = osa.lsa_restorer; 472 LINUX_SIGEMPTYSET(act.lsa_mask); 473 act.lsa_mask.__mask = osa.lsa_mask; 474 } 475 476 error = linux_do_sigaction(td, args->sig, args->nsa ? &act : NULL, 477 args->osa ? &oact : NULL); 478 479 if (args->osa != NULL && !error) { 480 osa.lsa_handler = oact.lsa_handler; 481 osa.lsa_flags = oact.lsa_flags; 482 osa.lsa_restorer = oact.lsa_restorer; 483 osa.lsa_mask = oact.lsa_mask.__mask; 484 error = copyout(&osa, args->osa, sizeof(l_osigaction_t)); 485 } 486 487 return (error); 488 } 489 490 /* 491 * Linux has two extra args, restart and oldmask. We dont use these, 492 * but it seems that "restart" is actually a context pointer that 493 * enables the signal to happen with a different register set. 494 */ 495 int 496 linux_sigsuspend(struct thread *td, struct linux_sigsuspend_args *args) 497 { 498 sigset_t sigmask; 499 l_sigset_t mask; 500 501 LINUX_SIGEMPTYSET(mask); 502 mask.__mask = args->mask; 503 linux_to_bsd_sigset(&mask, &sigmask); 504 return (kern_sigsuspend(td, sigmask)); 505 } 506 507 int 508 linux_rt_sigsuspend(struct thread *td, struct linux_rt_sigsuspend_args *uap) 509 { 510 l_sigset_t lmask; 511 sigset_t sigmask; 512 int error; 513 514 if (uap->sigsetsize != sizeof(l_sigset_t)) 515 return (EINVAL); 516 517 error = copyin(uap->newset, &lmask, sizeof(l_sigset_t)); 518 if (error) 519 return (error); 520 521 linux_to_bsd_sigset(&lmask, &sigmask); 522 return (kern_sigsuspend(td, sigmask)); 523 } 524 525 int 526 linux_pause(struct thread *td, struct linux_pause_args *args) 527 { 528 struct proc *p = td->td_proc; 529 sigset_t sigmask; 530 531 PROC_LOCK(p); 532 sigmask = td->td_sigmask; 533 PROC_UNLOCK(p); 534 return (kern_sigsuspend(td, sigmask)); 535 } 536 537 int 538 linux_sigaltstack(struct thread *td, struct linux_sigaltstack_args *uap) 539 { 540 stack_t ss, oss; 541 l_stack_t lss; 542 int error; 543 544 if (uap->uss != NULL) { 545 error = copyin(uap->uss, &lss, sizeof(l_stack_t)); 546 if (error) 547 return (error); 548 549 ss.ss_sp = lss.ss_sp; 550 ss.ss_size = lss.ss_size; 551 ss.ss_flags = linux_to_bsd_sigaltstack(lss.ss_flags); 552 } 553 error = kern_sigaltstack(td, (uap->uss != NULL) ? &ss : NULL, 554 (uap->uoss != NULL) ? &oss : NULL); 555 if (!error && uap->uoss != NULL) { 556 lss.ss_sp = oss.ss_sp; 557 lss.ss_size = oss.ss_size; 558 lss.ss_flags = bsd_to_linux_sigaltstack(oss.ss_flags); 559 error = copyout(&lss, uap->uoss, sizeof(l_stack_t)); 560 } 561 562 return (error); 563 } 564 565 int 566 linux_set_thread_area(struct thread *td, struct linux_set_thread_area_args *args) 567 { 568 struct l_user_desc info; 569 int error; 570 int idx; 571 int a[2]; 572 struct segment_descriptor sd; 573 574 error = copyin(args->desc, &info, sizeof(struct l_user_desc)); 575 if (error) 576 return (error); 577 578 idx = info.entry_number; 579 /* 580 * Semantics of Linux version: every thread in the system has array of 581 * 3 tls descriptors. 1st is GLIBC TLS, 2nd is WINE, 3rd unknown. This 582 * syscall loads one of the selected tls decriptors with a value and 583 * also loads GDT descriptors 6, 7 and 8 with the content of the 584 * per-thread descriptors. 585 * 586 * Semantics of FreeBSD version: I think we can ignore that Linux has 3 587 * per-thread descriptors and use just the 1st one. The tls_array[] 588 * is used only in set/get-thread_area() syscalls and for loading the 589 * GDT descriptors. In FreeBSD we use just one GDT descriptor for TLS 590 * so we will load just one. 591 * 592 * XXX: this doesn't work when a user space process tries to use more 593 * than 1 TLS segment. Comment in the Linux sources says wine might do 594 * this. 595 */ 596 597 /* 598 * we support just GLIBC TLS now 599 * we should let 3 proceed as well because we use this segment so 600 * if code does two subsequent calls it should succeed 601 */ 602 if (idx != 6 && idx != -1 && idx != 3) 603 return (EINVAL); 604 605 /* 606 * we have to copy out the GDT entry we use 607 * FreeBSD uses GDT entry #3 for storing %gs so load that 608 * 609 * XXX: what if a user space program doesn't check this value and tries 610 * to use 6, 7 or 8? 611 */ 612 idx = info.entry_number = 3; 613 error = copyout(&info, args->desc, sizeof(struct l_user_desc)); 614 if (error) 615 return (error); 616 617 if (LINUX_LDT_empty(&info)) { 618 a[0] = 0; 619 a[1] = 0; 620 } else { 621 a[0] = LINUX_LDT_entry_a(&info); 622 a[1] = LINUX_LDT_entry_b(&info); 623 } 624 625 memcpy(&sd, &a, sizeof(a)); 626 /* this is taken from i386 version of cpu_set_user_tls() */ 627 critical_enter(); 628 /* set %gs */ 629 td->td_pcb->pcb_gsd = sd; 630 PCPU_GET(fsgs_gdt)[1] = sd; 631 load_gs(GSEL(GUGS_SEL, SEL_UPL)); 632 critical_exit(); 633 634 return (0); 635 } 636 637 int 638 linux_get_thread_area(struct thread *td, struct linux_get_thread_area_args *args) 639 { 640 641 struct l_user_desc info; 642 int error; 643 int idx; 644 struct l_desc_struct desc; 645 struct segment_descriptor sd; 646 647 error = copyin(args->desc, &info, sizeof(struct l_user_desc)); 648 if (error) 649 return (error); 650 651 idx = info.entry_number; 652 /* XXX: I am not sure if we want 3 to be allowed too. */ 653 if (idx != 6 && idx != 3) 654 return (EINVAL); 655 656 idx = 3; 657 658 memset(&info, 0, sizeof(info)); 659 660 sd = PCPU_GET(fsgs_gdt)[1]; 661 662 memcpy(&desc, &sd, sizeof(desc)); 663 664 info.entry_number = idx; 665 info.base_addr = LINUX_GET_BASE(&desc); 666 info.limit = LINUX_GET_LIMIT(&desc); 667 info.seg_32bit = LINUX_GET_32BIT(&desc); 668 info.contents = LINUX_GET_CONTENTS(&desc); 669 info.read_exec_only = !LINUX_GET_WRITABLE(&desc); 670 info.limit_in_pages = LINUX_GET_LIMIT_PAGES(&desc); 671 info.seg_not_present = !LINUX_GET_PRESENT(&desc); 672 info.useable = LINUX_GET_USEABLE(&desc); 673 674 error = copyout(&info, args->desc, sizeof(struct l_user_desc)); 675 if (error) 676 return (EFAULT); 677 678 return (0); 679 } 680 681 /* XXX: this wont work with module - convert it */ 682 int 683 linux_mq_open(struct thread *td, struct linux_mq_open_args *args) 684 { 685 #ifdef P1003_1B_MQUEUE 686 return (sys_kmq_open(td, (struct kmq_open_args *)args)); 687 #else 688 return (ENOSYS); 689 #endif 690 } 691 692 int 693 linux_mq_unlink(struct thread *td, struct linux_mq_unlink_args *args) 694 { 695 #ifdef P1003_1B_MQUEUE 696 return (sys_kmq_unlink(td, (struct kmq_unlink_args *)args)); 697 #else 698 return (ENOSYS); 699 #endif 700 } 701 702 int 703 linux_mq_timedsend(struct thread *td, struct linux_mq_timedsend_args *args) 704 { 705 #ifdef P1003_1B_MQUEUE 706 return (sys_kmq_timedsend(td, (struct kmq_timedsend_args *)args)); 707 #else 708 return (ENOSYS); 709 #endif 710 } 711 712 int 713 linux_mq_timedreceive(struct thread *td, struct linux_mq_timedreceive_args *args) 714 { 715 #ifdef P1003_1B_MQUEUE 716 return (sys_kmq_timedreceive(td, (struct kmq_timedreceive_args *)args)); 717 #else 718 return (ENOSYS); 719 #endif 720 } 721 722 int 723 linux_mq_notify(struct thread *td, struct linux_mq_notify_args *args) 724 { 725 #ifdef P1003_1B_MQUEUE 726 return (sys_kmq_notify(td, (struct kmq_notify_args *)args)); 727 #else 728 return (ENOSYS); 729 #endif 730 } 731 732 int 733 linux_mq_getsetattr(struct thread *td, struct linux_mq_getsetattr_args *args) 734 { 735 #ifdef P1003_1B_MQUEUE 736 return (sys_kmq_setattr(td, (struct kmq_setattr_args *)args)); 737 #else 738 return (ENOSYS); 739 #endif 740 } 741