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 <security/audit/audit.h> 65 66#include <i386/linux/linux.h> 67#include <i386/linux/linux_proto.h> 68#include <compat/linux/linux_emul.h> 69#include <compat/linux/linux_ipc.h> 70#include <compat/linux/linux_misc.h> 71#include <compat/linux/linux_mmap.h> 72#include <compat/linux/linux_signal.h> 73#include <compat/linux/linux_util.h> 74 75#include <i386/include/pcb.h> /* needed for pcb definition in linux_set_thread_area */ 76 77#include "opt_posix.h" 78 79extern struct sysentvec elf32_freebsd_sysvec; /* defined in i386/i386/elf_machdep.c */ 80 81struct l_descriptor { 82 l_uint entry_number; 83 l_ulong base_addr; 84 l_uint limit; 85 l_uint seg_32bit:1; 86 l_uint contents:2; 87 l_uint read_exec_only:1; 88 l_uint limit_in_pages:1; 89 l_uint seg_not_present:1; 90 l_uint useable:1; 91}; 92 93struct l_old_select_argv { 94 l_int nfds; 95 l_fd_set *readfds; 96 l_fd_set *writefds; 97 l_fd_set *exceptfds; 98 struct l_timeval *timeout; 99}; 100 101int 102linux_execve(struct thread *td, struct linux_execve_args *args) 103{ 104 struct image_args eargs; 105 char *newpath; 106 int error; 107 108 if (!LUSECONVPATH(td)) { 109 error = exec_copyin_args(&eargs, args->path, UIO_USERSPACE, 110 args->argp, args->envp); 111 } else { 112 LCONVPATHEXIST(td, args->path, &newpath); 113 error = exec_copyin_args(&eargs, newpath, UIO_SYSSPACE, 114 args->argp, args->envp); 115 LFREEPATH(newpath); 116 } 117 if (error == 0) 118 error = linux_common_execve(td, &eargs); 119 AUDIT_SYSCALL_EXIT(error == EJUSTRETURN ? 0 : error, td); 120 return (error); 121} 122 123struct l_ipc_kludge { 124 struct l_msgbuf *msgp; 125 l_long msgtyp; 126}; 127 128int 129linux_ipc(struct thread *td, struct linux_ipc_args *args) 130{ 131 132 switch (args->what & 0xFFFF) { 133 case LINUX_SEMOP: { 134 struct linux_semop_args a; 135 136 a.semid = args->arg1; 137 a.tsops = PTRIN(args->ptr); 138 a.nsops = args->arg2; 139 return (linux_semop(td, &a)); 140 } 141 case LINUX_SEMGET: { 142 struct linux_semget_args a; 143 144 a.key = args->arg1; 145 a.nsems = args->arg2; 146 a.semflg = args->arg3; 147 return (linux_semget(td, &a)); 148 } 149 case LINUX_SEMCTL: { 150 struct linux_semctl_args a; 151 int error; 152 153 a.semid = args->arg1; 154 a.semnum = args->arg2; 155 a.cmd = args->arg3; 156 error = copyin(PTRIN(args->ptr), &a.arg, sizeof(a.arg)); 157 if (error) 158 return (error); 159 return (linux_semctl(td, &a)); 160 } 161 case LINUX_MSGSND: { 162 struct linux_msgsnd_args a; 163 164 a.msqid = args->arg1; 165 a.msgp = PTRIN(args->ptr); 166 a.msgsz = args->arg2; 167 a.msgflg = args->arg3; 168 return (linux_msgsnd(td, &a)); 169 } 170 case LINUX_MSGRCV: { 171 struct linux_msgrcv_args a; 172 173 a.msqid = args->arg1; 174 a.msgsz = args->arg2; 175 a.msgflg = args->arg3; 176 if ((args->what >> 16) == 0) { 177 struct l_ipc_kludge tmp; 178 int error; 179 180 if (args->ptr == 0) 181 return (EINVAL); 182 error = copyin(PTRIN(args->ptr), &tmp, sizeof(tmp)); 183 if (error) 184 return (error); 185 a.msgp = PTRIN(tmp.msgp); 186 a.msgtyp = tmp.msgtyp; 187 } else { 188 a.msgp = PTRIN(args->ptr); 189 a.msgtyp = args->arg5; 190 } 191 return (linux_msgrcv(td, &a)); 192 } 193 case LINUX_MSGGET: { 194 struct linux_msgget_args a; 195 196 a.key = args->arg1; 197 a.msgflg = args->arg2; 198 return (linux_msgget(td, &a)); 199 } 200 case LINUX_MSGCTL: { 201 struct linux_msgctl_args a; 202 203 a.msqid = args->arg1; 204 a.cmd = args->arg2; 205 a.buf = PTRIN(args->ptr); 206 return (linux_msgctl(td, &a)); 207 } 208 case LINUX_SHMAT: { 209 struct linux_shmat_args a; 210 l_uintptr_t addr; 211 int error; 212 213 a.shmid = args->arg1; 214 a.shmaddr = PTRIN(args->ptr); 215 a.shmflg = args->arg2; 216 error = linux_shmat(td, &a); 217 if (error != 0) 218 return (error); 219 addr = td->td_retval[0]; 220 error = copyout(&addr, PTRIN(args->arg3), sizeof(addr)); 221 td->td_retval[0] = 0; 222 return (error); 223 } 224 case LINUX_SHMDT: { 225 struct linux_shmdt_args a; 226 227 a.shmaddr = PTRIN(args->ptr); 228 return (linux_shmdt(td, &a)); 229 } 230 case LINUX_SHMGET: { 231 struct linux_shmget_args a; 232 233 a.key = args->arg1; 234 a.size = args->arg2; 235 a.shmflg = args->arg3; 236 return (linux_shmget(td, &a)); 237 } 238 case LINUX_SHMCTL: { 239 struct linux_shmctl_args a; 240 241 a.shmid = args->arg1; 242 a.cmd = args->arg2; 243 a.buf = PTRIN(args->ptr); 244 return (linux_shmctl(td, &a)); 245 } 246 default: 247 break; 248 } 249 250 return (EINVAL); 251} 252 253int 254linux_old_select(struct thread *td, struct linux_old_select_args *args) 255{ 256 struct l_old_select_argv linux_args; 257 struct linux_select_args newsel; 258 int error; 259 260 error = copyin(args->ptr, &linux_args, sizeof(linux_args)); 261 if (error) 262 return (error); 263 264 newsel.nfds = linux_args.nfds; 265 newsel.readfds = linux_args.readfds; 266 newsel.writefds = linux_args.writefds; 267 newsel.exceptfds = linux_args.exceptfds; 268 newsel.timeout = linux_args.timeout; 269 return (linux_select(td, &newsel)); 270} 271 272int 273linux_set_cloned_tls(struct thread *td, void *desc) 274{ 275 struct segment_descriptor sd; 276 struct l_user_desc info; 277 int idx, error; 278 int a[2]; 279 280 error = copyin(desc, &info, sizeof(struct l_user_desc)); 281 if (error) { 282 linux_msg(td, "set_cloned_tls copyin failed!"); 283 } else { 284 idx = info.entry_number; 285 286 /* 287 * looks like we're getting the idx we returned 288 * in the set_thread_area() syscall 289 */ 290 if (idx != 6 && idx != 3) { 291 linux_msg(td, "set_cloned_tls resetting idx!"); 292 idx = 3; 293 } 294 295 /* this doesnt happen in practice */ 296 if (idx == 6) { 297 /* we might copy out the entry_number as 3 */ 298 info.entry_number = 3; 299 error = copyout(&info, desc, sizeof(struct l_user_desc)); 300 if (error) 301 linux_msg(td, "set_cloned_tls copyout failed!"); 302 } 303 304 a[0] = LINUX_LDT_entry_a(&info); 305 a[1] = LINUX_LDT_entry_b(&info); 306 307 memcpy(&sd, &a, sizeof(a)); 308 /* set %gs */ 309 td->td_pcb->pcb_gsd = sd; 310 td->td_pcb->pcb_gs = GSEL(GUGS_SEL, SEL_UPL); 311 } 312 313 return (error); 314} 315 316int 317linux_set_upcall(struct thread *td, register_t stack) 318{ 319 320 if (stack) 321 td->td_frame->tf_esp = stack; 322 323 /* 324 * The newly created Linux thread returns 325 * to the user space by the same path that a parent do. 326 */ 327 td->td_frame->tf_eax = 0; 328 return (0); 329} 330 331int 332linux_mmap2(struct thread *td, struct linux_mmap2_args *args) 333{ 334 335 return (linux_mmap_common(td, args->addr, args->len, args->prot, 336 args->flags, args->fd, (uint64_t)(uint32_t)args->pgoff * 337 PAGE_SIZE)); 338} 339 340int 341linux_mmap(struct thread *td, struct linux_mmap_args *args) 342{ 343 int error; 344 struct l_mmap_argv linux_args; 345 346 error = copyin(args->ptr, &linux_args, sizeof(linux_args)); 347 if (error) 348 return (error); 349 350 return (linux_mmap_common(td, linux_args.addr, linux_args.len, 351 linux_args.prot, linux_args.flags, linux_args.fd, 352 (uint32_t)linux_args.pgoff)); 353} 354 355int 356linux_mprotect(struct thread *td, struct linux_mprotect_args *uap) 357{ 358 359 return (linux_mprotect_common(td, PTROUT(uap->addr), uap->len, uap->prot)); 360} 361 362int 363linux_madvise(struct thread *td, struct linux_madvise_args *uap) 364{ 365 366 return (linux_madvise_common(td, PTROUT(uap->addr), uap->len, uap->behav)); 367} 368 369int 370linux_ioperm(struct thread *td, struct linux_ioperm_args *args) 371{ 372 int error; 373 struct i386_ioperm_args iia; 374 375 iia.start = args->start; 376 iia.length = args->length; 377 iia.enable = args->enable; 378 error = i386_set_ioperm(td, &iia); 379 return (error); 380} 381 382int 383linux_iopl(struct thread *td, struct linux_iopl_args *args) 384{ 385 int error; 386 387 if (args->level < 0 || args->level > 3) 388 return (EINVAL); 389 if ((error = priv_check(td, PRIV_IO)) != 0) 390 return (error); 391 if ((error = securelevel_gt(td->td_ucred, 0)) != 0) 392 return (error); 393 td->td_frame->tf_eflags = (td->td_frame->tf_eflags & ~PSL_IOPL) | 394 (args->level * (PSL_IOPL / 3)); 395 return (0); 396} 397 398int 399linux_modify_ldt(struct thread *td, struct linux_modify_ldt_args *uap) 400{ 401 int error; 402 struct i386_ldt_args ldt; 403 struct l_descriptor ld; 404 union descriptor desc; 405 int size, written; 406 407 switch (uap->func) { 408 case 0x00: /* read_ldt */ 409 ldt.start = 0; 410 ldt.descs = uap->ptr; 411 ldt.num = uap->bytecount / sizeof(union descriptor); 412 error = i386_get_ldt(td, &ldt); 413 td->td_retval[0] *= sizeof(union descriptor); 414 break; 415 case 0x02: /* read_default_ldt = 0 */ 416 size = 5*sizeof(struct l_desc_struct); 417 if (size > uap->bytecount) 418 size = uap->bytecount; 419 for (written = error = 0; written < size && error == 0; written++) 420 error = subyte((char *)uap->ptr + written, 0); 421 td->td_retval[0] = written; 422 break; 423 case 0x01: /* write_ldt */ 424 case 0x11: /* write_ldt */ 425 if (uap->bytecount != sizeof(ld)) 426 return (EINVAL); 427 428 error = copyin(uap->ptr, &ld, sizeof(ld)); 429 if (error) 430 return (error); 431 432 ldt.start = ld.entry_number; 433 ldt.descs = &desc; 434 ldt.num = 1; 435 desc.sd.sd_lolimit = (ld.limit & 0x0000ffff); 436 desc.sd.sd_hilimit = (ld.limit & 0x000f0000) >> 16; 437 desc.sd.sd_lobase = (ld.base_addr & 0x00ffffff); 438 desc.sd.sd_hibase = (ld.base_addr & 0xff000000) >> 24; 439 desc.sd.sd_type = SDT_MEMRO | ((ld.read_exec_only ^ 1) << 1) | 440 (ld.contents << 2); 441 desc.sd.sd_dpl = 3; 442 desc.sd.sd_p = (ld.seg_not_present ^ 1); 443 desc.sd.sd_xx = 0; 444 desc.sd.sd_def32 = ld.seg_32bit; 445 desc.sd.sd_gran = ld.limit_in_pages; 446 error = i386_set_ldt(td, &ldt, &desc); 447 break; 448 default: 449 error = ENOSYS; 450 break; 451 } 452 453 if (error == EOPNOTSUPP) { 454 linux_msg(td, "modify_ldt needs kernel option USER_LDT"); 455 error = ENOSYS; 456 } 457 458 return (error); 459} 460 461int 462linux_sigaction(struct thread *td, struct linux_sigaction_args *args) 463{ 464 l_osigaction_t osa; 465 l_sigaction_t act, oact; 466 int error; 467 468 if (args->nsa != NULL) { 469 error = copyin(args->nsa, &osa, sizeof(l_osigaction_t)); 470 if (error) 471 return (error); 472 act.lsa_handler = osa.lsa_handler; 473 act.lsa_flags = osa.lsa_flags; 474 act.lsa_restorer = osa.lsa_restorer; 475 LINUX_SIGEMPTYSET(act.lsa_mask); 476 act.lsa_mask.__mask = osa.lsa_mask; 477 } 478 479 error = linux_do_sigaction(td, args->sig, args->nsa ? &act : NULL, 480 args->osa ? &oact : NULL); 481 482 if (args->osa != NULL && !error) { 483 osa.lsa_handler = oact.lsa_handler; 484 osa.lsa_flags = oact.lsa_flags; 485 osa.lsa_restorer = oact.lsa_restorer; 486 osa.lsa_mask = oact.lsa_mask.__mask; 487 error = copyout(&osa, args->osa, sizeof(l_osigaction_t)); 488 } 489 490 return (error); 491} 492 493/* 494 * Linux has two extra args, restart and oldmask. We dont use these, 495 * but it seems that "restart" is actually a context pointer that 496 * enables the signal to happen with a different register set. 497 */ 498int 499linux_sigsuspend(struct thread *td, struct linux_sigsuspend_args *args) 500{ 501 sigset_t sigmask; 502 l_sigset_t mask; 503 504 LINUX_SIGEMPTYSET(mask); 505 mask.__mask = args->mask; 506 linux_to_bsd_sigset(&mask, &sigmask); 507 return (kern_sigsuspend(td, sigmask)); 508} 509 510int 511linux_rt_sigsuspend(struct thread *td, struct linux_rt_sigsuspend_args *uap) 512{ 513 l_sigset_t lmask; 514 sigset_t sigmask; 515 int error; 516 517 if (uap->sigsetsize != sizeof(l_sigset_t)) 518 return (EINVAL); 519 520 error = copyin(uap->newset, &lmask, sizeof(l_sigset_t)); 521 if (error) 522 return (error); 523 524 linux_to_bsd_sigset(&lmask, &sigmask); 525 return (kern_sigsuspend(td, sigmask)); 526} 527 528int 529linux_pause(struct thread *td, struct linux_pause_args *args) 530{ 531 struct proc *p = td->td_proc; 532 sigset_t sigmask; 533 534 PROC_LOCK(p); 535 sigmask = td->td_sigmask; 536 PROC_UNLOCK(p); 537 return (kern_sigsuspend(td, sigmask)); 538} 539 540int 541linux_sigaltstack(struct thread *td, struct linux_sigaltstack_args *uap) 542{ 543 stack_t ss, oss; 544 l_stack_t lss; 545 int error; 546 547 if (uap->uss != NULL) { 548 error = copyin(uap->uss, &lss, sizeof(l_stack_t)); 549 if (error) 550 return (error); 551 552 ss.ss_sp = lss.ss_sp; 553 ss.ss_size = lss.ss_size; 554 ss.ss_flags = linux_to_bsd_sigaltstack(lss.ss_flags); 555 } 556 error = kern_sigaltstack(td, (uap->uss != NULL) ? &ss : NULL, 557 (uap->uoss != NULL) ? &oss : NULL); 558 if (!error && uap->uoss != NULL) { 559 lss.ss_sp = oss.ss_sp; 560 lss.ss_size = oss.ss_size; 561 lss.ss_flags = bsd_to_linux_sigaltstack(oss.ss_flags); 562 error = copyout(&lss, uap->uoss, sizeof(l_stack_t)); 563 } 564 565 return (error); 566} 567 568int 569linux_set_thread_area(struct thread *td, struct linux_set_thread_area_args *args) 570{ 571 struct l_user_desc info; 572 int error; 573 int idx; 574 int a[2]; 575 struct segment_descriptor sd; 576 577 error = copyin(args->desc, &info, sizeof(struct l_user_desc)); 578 if (error) 579 return (error); 580 581 idx = info.entry_number; 582 /* 583 * Semantics of Linux version: every thread in the system has array of 584 * 3 tls descriptors. 1st is GLIBC TLS, 2nd is WINE, 3rd unknown. This 585 * syscall loads one of the selected tls decriptors with a value and 586 * also loads GDT descriptors 6, 7 and 8 with the content of the 587 * per-thread descriptors. 588 * 589 * Semantics of FreeBSD version: I think we can ignore that Linux has 3 590 * per-thread descriptors and use just the 1st one. The tls_array[] 591 * is used only in set/get-thread_area() syscalls and for loading the 592 * GDT descriptors. In FreeBSD we use just one GDT descriptor for TLS 593 * so we will load just one. 594 * 595 * XXX: this doesn't work when a user space process tries to use more 596 * than 1 TLS segment. Comment in the Linux sources says wine might do 597 * this. 598 */ 599 600 /* 601 * we support just GLIBC TLS now 602 * we should let 3 proceed as well because we use this segment so 603 * if code does two subsequent calls it should succeed 604 */ 605 if (idx != 6 && idx != -1 && idx != 3) 606 return (EINVAL); 607 608 /* 609 * we have to copy out the GDT entry we use 610 * FreeBSD uses GDT entry #3 for storing %gs so load that 611 * 612 * XXX: what if a user space program doesn't check this value and tries 613 * to use 6, 7 or 8? 614 */ 615 idx = info.entry_number = 3; 616 error = copyout(&info, args->desc, sizeof(struct l_user_desc)); 617 if (error) 618 return (error); 619 620 if (LINUX_LDT_empty(&info)) { 621 a[0] = 0; 622 a[1] = 0; 623 } else { 624 a[0] = LINUX_LDT_entry_a(&info); 625 a[1] = LINUX_LDT_entry_b(&info); 626 } 627 628 memcpy(&sd, &a, sizeof(a)); 629 /* this is taken from i386 version of cpu_set_user_tls() */ 630 critical_enter(); 631 /* set %gs */ 632 td->td_pcb->pcb_gsd = sd; 633 PCPU_GET(fsgs_gdt)[1] = sd; 634 load_gs(GSEL(GUGS_SEL, SEL_UPL)); 635 critical_exit(); 636 637 return (0); 638} 639 640int 641linux_get_thread_area(struct thread *td, struct linux_get_thread_area_args *args) 642{ 643 644 struct l_user_desc info; 645 int error; 646 int idx; 647 struct l_desc_struct desc; 648 struct segment_descriptor sd; 649 650 error = copyin(args->desc, &info, sizeof(struct l_user_desc)); 651 if (error) 652 return (error); 653 654 idx = info.entry_number; 655 /* XXX: I am not sure if we want 3 to be allowed too. */ 656 if (idx != 6 && idx != 3) 657 return (EINVAL); 658 659 idx = 3; 660 661 memset(&info, 0, sizeof(info)); 662 663 sd = PCPU_GET(fsgs_gdt)[1]; 664 665 memcpy(&desc, &sd, sizeof(desc)); 666 667 info.entry_number = idx; 668 info.base_addr = LINUX_GET_BASE(&desc); 669 info.limit = LINUX_GET_LIMIT(&desc); 670 info.seg_32bit = LINUX_GET_32BIT(&desc); 671 info.contents = LINUX_GET_CONTENTS(&desc); 672 info.read_exec_only = !LINUX_GET_WRITABLE(&desc); 673 info.limit_in_pages = LINUX_GET_LIMIT_PAGES(&desc); 674 info.seg_not_present = !LINUX_GET_PRESENT(&desc); 675 info.useable = LINUX_GET_USEABLE(&desc); 676 677 error = copyout(&info, args->desc, sizeof(struct l_user_desc)); 678 if (error) 679 return (EFAULT); 680 681 return (0); 682} 683 684/* XXX: this wont work with module - convert it */ 685int 686linux_mq_open(struct thread *td, struct linux_mq_open_args *args) 687{ 688#ifdef P1003_1B_MQUEUE 689 return (sys_kmq_open(td, (struct kmq_open_args *)args)); 690#else 691 return (ENOSYS); 692#endif 693} 694 695int 696linux_mq_unlink(struct thread *td, struct linux_mq_unlink_args *args) 697{ 698#ifdef P1003_1B_MQUEUE 699 return (sys_kmq_unlink(td, (struct kmq_unlink_args *)args)); 700#else 701 return (ENOSYS); 702#endif 703} 704 705int 706linux_mq_timedsend(struct thread *td, struct linux_mq_timedsend_args *args) 707{ 708#ifdef P1003_1B_MQUEUE 709 return (sys_kmq_timedsend(td, (struct kmq_timedsend_args *)args)); 710#else 711 return (ENOSYS); 712#endif 713} 714 715int 716linux_mq_timedreceive(struct thread *td, struct linux_mq_timedreceive_args *args) 717{ 718#ifdef P1003_1B_MQUEUE 719 return (sys_kmq_timedreceive(td, (struct kmq_timedreceive_args *)args)); 720#else 721 return (ENOSYS); 722#endif 723} 724 725int 726linux_mq_notify(struct thread *td, struct linux_mq_notify_args *args) 727{ 728#ifdef P1003_1B_MQUEUE 729 return (sys_kmq_notify(td, (struct kmq_notify_args *)args)); 730#else 731 return (ENOSYS); 732#endif 733} 734 735int 736linux_mq_getsetattr(struct thread *td, struct linux_mq_getsetattr_args *args) 737{ 738#ifdef P1003_1B_MQUEUE 739 return (sys_kmq_setattr(td, (struct kmq_setattr_args *)args)); 740#else 741 return (ENOSYS); 742#endif 743} 744