linux_machdep.c

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    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/lock.h>
   37 #include <sys/malloc.h>
   38 #include <sys/mman.h>
   39 #include <sys/mutex.h>
   40 #include <sys/priv.h>
   41 #include <sys/proc.h>
   42 #include <sys/queue.h>
   43 #include <sys/resource.h>
   44 #include <sys/resourcevar.h>
   45 #include <sys/sched.h>
   46 #include <sys/signalvar.h>
   47 #include <sys/syscallsubr.h>
   48 #include <sys/sysproto.h>
   49 #include <sys/systm.h>
   50 #include <sys/sx.h>
   51 #include <sys/unistd.h>
   52 #include <sys/wait.h>
   53 
   54 #include <machine/frame.h>
   55 #include <machine/psl.h>
   56 #include <machine/segments.h>
   57 #include <machine/sysarch.h>
   58 
   59 #include <vm/pmap.h>
   60 #include <vm/vm.h>
   61 #include <vm/vm_map.h>
   62 
   63 #include <i386/linux/linux.h>
   64 #include <i386/linux/linux_proto.h>
   65 #include <compat/linux/linux_emul.h>
   66 #include <compat/linux/linux_fork.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 struct l_descriptor {
   78         l_uint          entry_number;
   79         l_ulong         base_addr;
   80         l_uint          limit;
   81         l_uint          seg_32bit:1;
   82         l_uint          contents:2;
   83         l_uint          read_exec_only:1;
   84         l_uint          limit_in_pages:1;
   85         l_uint          seg_not_present:1;
   86         l_uint          useable:1;
   87 };
   88 
   89 struct l_old_select_argv {
   90         l_int           nfds;
   91         l_fd_set        *readfds;
   92         l_fd_set        *writefds;
   93         l_fd_set        *exceptfds;
   94         struct l_timeval        *timeout;
   95 };
   96 
   97 struct l_ipc_kludge {
   98         struct l_msgbuf *msgp;
   99         l_long msgtyp;
  100 };
  101 
  102 int
  103 linux_ipc(struct thread *td, struct linux_ipc_args *args)
  104 {
  105 
  106         switch (args->what & 0xFFFF) {
  107         case LINUX_SEMOP: {
  108 
  109                 return (kern_semop(td, args->arg1, PTRIN(args->ptr),
  110                     args->arg2, NULL));
  111         }
  112         case LINUX_SEMGET: {
  113                 struct linux_semget_args a;
  114 
  115                 a.key = args->arg1;
  116                 a.nsems = args->arg2;
  117                 a.semflg = args->arg3;
  118                 return (linux_semget(td, &a));
  119         }
  120         case LINUX_SEMCTL: {
  121                 struct linux_semctl_args a;
  122                 int error;
  123 
  124                 a.semid = args->arg1;
  125                 a.semnum = args->arg2;
  126                 a.cmd = args->arg3;
  127                 error = copyin(PTRIN(args->ptr), &a.arg, sizeof(a.arg));
  128                 if (error)
  129                         return (error);
  130                 return (linux_semctl(td, &a));
  131         }
  132         case LINUX_SEMTIMEDOP: {
  133                 struct linux_semtimedop_args a;
  134 
  135                 a.semid = args->arg1;
  136                 a.tsops = PTRIN(args->ptr);
  137                 a.nsops = args->arg2;
  138                 a.timeout = PTRIN(args->arg5);
  139                 return (linux_semtimedop(td, &a));
  140         }
  141         case LINUX_MSGSND: {
  142                 struct linux_msgsnd_args a;
  143 
  144                 a.msqid = args->arg1;
  145                 a.msgp = PTRIN(args->ptr);
  146                 a.msgsz = args->arg2;
  147                 a.msgflg = args->arg3;
  148                 return (linux_msgsnd(td, &a));
  149         }
  150         case LINUX_MSGRCV: {
  151                 struct linux_msgrcv_args a;
  152 
  153                 a.msqid = args->arg1;
  154                 a.msgsz = args->arg2;
  155                 a.msgflg = args->arg3;
  156                 if ((args->what >> 16) == 0) {
  157                         struct l_ipc_kludge tmp;
  158                         int error;
  159 
  160                         if (args->ptr == 0)
  161                                 return (EINVAL);
  162                         error = copyin(PTRIN(args->ptr), &tmp, sizeof(tmp));
  163                         if (error)
  164                                 return (error);
  165                         a.msgp = PTRIN(tmp.msgp);
  166                         a.msgtyp = tmp.msgtyp;
  167                 } else {
  168                         a.msgp = PTRIN(args->ptr);
  169                         a.msgtyp = args->arg5;
  170                 }
  171                 return (linux_msgrcv(td, &a));
  172         }
  173         case LINUX_MSGGET: {
  174                 struct linux_msgget_args a;
  175 
  176                 a.key = args->arg1;
  177                 a.msgflg = args->arg2;
  178                 return (linux_msgget(td, &a));
  179         }
  180         case LINUX_MSGCTL: {
  181                 struct linux_msgctl_args a;
  182 
  183                 a.msqid = args->arg1;
  184                 a.cmd = args->arg2;
  185                 a.buf = PTRIN(args->ptr);
  186                 return (linux_msgctl(td, &a));
  187         }
  188         case LINUX_SHMAT: {
  189                 struct linux_shmat_args a;
  190                 l_uintptr_t addr;
  191                 int error;
  192 
  193                 a.shmid = args->arg1;
  194                 a.shmaddr = PTRIN(args->ptr);
  195                 a.shmflg = args->arg2;
  196                 error = linux_shmat(td, &a);
  197                 if (error != 0)
  198                         return (error);
  199                 addr = td->td_retval[0];
  200                 error = copyout(&addr, PTRIN(args->arg3), sizeof(addr));
  201                 td->td_retval[0] = 0;
  202                 return (error);
  203         }
  204         case LINUX_SHMDT: {
  205                 struct linux_shmdt_args a;
  206 
  207                 a.shmaddr = PTRIN(args->ptr);
  208                 return (linux_shmdt(td, &a));
  209         }
  210         case LINUX_SHMGET: {
  211                 struct linux_shmget_args a;
  212 
  213                 a.key = args->arg1;
  214                 a.size = args->arg2;
  215                 a.shmflg = args->arg3;
  216                 return (linux_shmget(td, &a));
  217         }
  218         case LINUX_SHMCTL: {
  219                 struct linux_shmctl_args a;
  220 
  221                 a.shmid = args->arg1;
  222                 a.cmd = args->arg2;
  223                 a.buf = PTRIN(args->ptr);
  224                 return (linux_shmctl(td, &a));
  225         }
  226         default:
  227                 break;
  228         }
  229 
  230         return (EINVAL);
  231 }
  232 
  233 int
  234 linux_old_select(struct thread *td, struct linux_old_select_args *args)
  235 {
  236         struct l_old_select_argv linux_args;
  237         struct linux_select_args newsel;
  238         int error;
  239 
  240         error = copyin(args->ptr, &linux_args, sizeof(linux_args));
  241         if (error)
  242                 return (error);
  243 
  244         newsel.nfds = linux_args.nfds;
  245         newsel.readfds = linux_args.readfds;
  246         newsel.writefds = linux_args.writefds;
  247         newsel.exceptfds = linux_args.exceptfds;
  248         newsel.timeout = linux_args.timeout;
  249         return (linux_select(td, &newsel));
  250 }
  251 
  252 int
  253 linux_set_cloned_tls(struct thread *td, void *desc)
  254 {
  255         struct segment_descriptor sd;
  256         struct l_user_desc info;
  257         int idx, error;
  258         int a[2];
  259 
  260         error = copyin(desc, &info, sizeof(struct l_user_desc));
  261         if (error) {
  262                 linux_msg(td, "set_cloned_tls copyin failed!");
  263         } else {
  264                 idx = info.entry_number;
  265 
  266                 /*
  267                  * looks like we're getting the idx we returned
  268                  * in the set_thread_area() syscall
  269                  */
  270                 if (idx != 6 && idx != 3) {
  271                         linux_msg(td, "set_cloned_tls resetting idx!");
  272                         idx = 3;
  273                 }
  274 
  275                 /* this doesnt happen in practice */
  276                 if (idx == 6) {
  277                         /* we might copy out the entry_number as 3 */
  278                         info.entry_number = 3;
  279                         error = copyout(&info, desc, sizeof(struct l_user_desc));
  280                         if (error)
  281                                 linux_msg(td, "set_cloned_tls copyout failed!");
  282                 }
  283 
  284                 a[0] = LINUX_LDT_entry_a(&info);
  285                 a[1] = LINUX_LDT_entry_b(&info);
  286 
  287                 memcpy(&sd, &a, sizeof(a));
  288                 /* set %gs */
  289                 td->td_pcb->pcb_gsd = sd;
  290                 td->td_pcb->pcb_gs = GSEL(GUGS_SEL, SEL_UPL);
  291         }
  292 
  293         return (error);
  294 }
  295 
  296 int
  297 linux_set_upcall(struct thread *td, register_t stack)
  298 {
  299 
  300         if (stack)
  301                 td->td_frame->tf_esp = stack;
  302 
  303         /*
  304          * The newly created Linux thread returns
  305          * to the user space by the same path that a parent do.
  306          */
  307         td->td_frame->tf_eax = 0;
  308         return (0);
  309 }
  310 
  311 int
  312 linux_mmap2(struct thread *td, struct linux_mmap2_args *args)
  313 {
  314 
  315         return (linux_mmap_common(td, args->addr, args->len, args->prot,
  316                 args->flags, args->fd, (uint64_t)(uint32_t)args->pgoff *
  317                 PAGE_SIZE));
  318 }
  319 
  320 int
  321 linux_mmap(struct thread *td, struct linux_mmap_args *args)
  322 {
  323         int error;
  324         struct l_mmap_argv linux_args;
  325 
  326         error = copyin(args->ptr, &linux_args, sizeof(linux_args));
  327         if (error)
  328                 return (error);
  329 
  330         return (linux_mmap_common(td, linux_args.addr, linux_args.len,
  331             linux_args.prot, linux_args.flags, linux_args.fd,
  332             (uint32_t)linux_args.pgoff));
  333 }
  334 
  335 int
  336 linux_mprotect(struct thread *td, struct linux_mprotect_args *uap)
  337 {
  338 
  339         return (linux_mprotect_common(td, PTROUT(uap->addr), uap->len, uap->prot));
  340 }
  341 
  342 int
  343 linux_madvise(struct thread *td, struct linux_madvise_args *uap)
  344 {
  345 
  346         return (linux_madvise_common(td, PTROUT(uap->addr), uap->len, uap->behav));
  347 }
  348 
  349 int
  350 linux_ioperm(struct thread *td, struct linux_ioperm_args *args)
  351 {
  352         int error;
  353         struct i386_ioperm_args iia;
  354 
  355         iia.start = args->start;
  356         iia.length = args->length;
  357         iia.enable = args->enable;
  358         error = i386_set_ioperm(td, &iia);
  359         return (error);
  360 }
  361 
  362 int
  363 linux_iopl(struct thread *td, struct linux_iopl_args *args)
  364 {
  365         int error;
  366 
  367         if (args->level < 0 || args->level > 3)
  368                 return (EINVAL);
  369         if ((error = priv_check(td, PRIV_IO)) != 0)
  370                 return (error);
  371         if ((error = securelevel_gt(td->td_ucred, 0)) != 0)
  372                 return (error);
  373         td->td_frame->tf_eflags = (td->td_frame->tf_eflags & ~PSL_IOPL) |
  374             (args->level * (PSL_IOPL / 3));
  375         return (0);
  376 }
  377 
  378 int
  379 linux_modify_ldt(struct thread *td, struct linux_modify_ldt_args *uap)
  380 {
  381         int error;
  382         struct i386_ldt_args ldt;
  383         struct l_descriptor ld;
  384         union descriptor desc;
  385         int size, written;
  386 
  387         switch (uap->func) {
  388         case 0x00: /* read_ldt */
  389                 ldt.start = 0;
  390                 ldt.descs = uap->ptr;
  391                 ldt.num = uap->bytecount / sizeof(union descriptor);
  392                 error = i386_get_ldt(td, &ldt);
  393                 td->td_retval[0] *= sizeof(union descriptor);
  394                 break;
  395         case 0x02: /* read_default_ldt = 0 */
  396                 size = 5*sizeof(struct l_desc_struct);
  397                 if (size > uap->bytecount)
  398                         size = uap->bytecount;
  399                 for (written = error = 0; written < size && error == 0; written++)
  400                         error = subyte((char *)uap->ptr + written, 0);
  401                 td->td_retval[0] = written;
  402                 break;
  403         case 0x01: /* write_ldt */
  404         case 0x11: /* write_ldt */
  405                 if (uap->bytecount != sizeof(ld))
  406                         return (EINVAL);
  407 
  408                 error = copyin(uap->ptr, &ld, sizeof(ld));
  409                 if (error)
  410                         return (error);
  411 
  412                 ldt.start = ld.entry_number;
  413                 ldt.descs = &desc;
  414                 ldt.num = 1;
  415                 desc.sd.sd_lolimit = (ld.limit & 0x0000ffff);
  416                 desc.sd.sd_hilimit = (ld.limit & 0x000f0000) >> 16;
  417                 desc.sd.sd_lobase = (ld.base_addr & 0x00ffffff);
  418                 desc.sd.sd_hibase = (ld.base_addr & 0xff000000) >> 24;
  419                 desc.sd.sd_type = SDT_MEMRO | ((ld.read_exec_only ^ 1) << 1) |
  420                         (ld.contents << 2);
  421                 desc.sd.sd_dpl = 3;
  422                 desc.sd.sd_p = (ld.seg_not_present ^ 1);
  423                 desc.sd.sd_xx = 0;
  424                 desc.sd.sd_def32 = ld.seg_32bit;
  425                 desc.sd.sd_gran = ld.limit_in_pages;
  426                 error = i386_set_ldt(td, &ldt, &desc);
  427                 break;
  428         default:
  429                 error = ENOSYS;
  430                 break;
  431         }
  432 
  433         if (error == EOPNOTSUPP) {
  434                 linux_msg(td, "modify_ldt needs kernel option USER_LDT");
  435                 error = ENOSYS;
  436         }
  437 
  438         return (error);
  439 }
  440 
  441 int
  442 linux_sigaction(struct thread *td, struct linux_sigaction_args *args)
  443 {
  444         l_osigaction_t osa;
  445         l_sigaction_t act, oact;
  446         int error;
  447 
  448         if (args->nsa != NULL) {
  449                 error = copyin(args->nsa, &osa, sizeof(l_osigaction_t));
  450                 if (error)
  451                         return (error);
  452                 act.lsa_handler = osa.lsa_handler;
  453                 act.lsa_flags = osa.lsa_flags;
  454                 act.lsa_restorer = osa.lsa_restorer;
  455                 LINUX_SIGEMPTYSET(act.lsa_mask);
  456                 act.lsa_mask.__mask = osa.lsa_mask;
  457         }
  458 
  459         error = linux_do_sigaction(td, args->sig, args->nsa ? &act : NULL,
  460             args->osa ? &oact : NULL);
  461 
  462         if (args->osa != NULL && !error) {
  463                 osa.lsa_handler = oact.lsa_handler;
  464                 osa.lsa_flags = oact.lsa_flags;
  465                 osa.lsa_restorer = oact.lsa_restorer;
  466                 osa.lsa_mask = oact.lsa_mask.__mask;
  467                 error = copyout(&osa, args->osa, sizeof(l_osigaction_t));
  468         }
  469 
  470         return (error);
  471 }
  472 
  473 /*
  474  * Linux has two extra args, restart and oldmask.  We dont use these,
  475  * but it seems that "restart" is actually a context pointer that
  476  * enables the signal to happen with a different register set.
  477  */
  478 int
  479 linux_sigsuspend(struct thread *td, struct linux_sigsuspend_args *args)
  480 {
  481         sigset_t sigmask;
  482         l_sigset_t mask;
  483 
  484         LINUX_SIGEMPTYSET(mask);
  485         mask.__mask = args->mask;
  486         linux_to_bsd_sigset(&mask, &sigmask);
  487         return (kern_sigsuspend(td, sigmask));
  488 }
  489 
  490 int
  491 linux_pause(struct thread *td, struct linux_pause_args *args)
  492 {
  493         struct proc *p = td->td_proc;
  494         sigset_t sigmask;
  495 
  496         PROC_LOCK(p);
  497         sigmask = td->td_sigmask;
  498         PROC_UNLOCK(p);
  499         return (kern_sigsuspend(td, sigmask));
  500 }
  501 
  502 int
  503 linux_set_thread_area(struct thread *td, struct linux_set_thread_area_args *args)
  504 {
  505         struct l_user_desc info;
  506         int error;
  507         int idx;
  508         int a[2];
  509         struct segment_descriptor sd;
  510 
  511         error = copyin(args->desc, &info, sizeof(struct l_user_desc));
  512         if (error)
  513                 return (error);
  514 
  515         idx = info.entry_number;
  516         /*
  517          * Semantics of Linux version: every thread in the system has array of
  518          * 3 tls descriptors. 1st is GLIBC TLS, 2nd is WINE, 3rd unknown. This
  519          * syscall loads one of the selected tls decriptors with a value and
  520          * also loads GDT descriptors 6, 7 and 8 with the content of the
  521          * per-thread descriptors.
  522          *
  523          * Semantics of FreeBSD version: I think we can ignore that Linux has 3
  524          * per-thread descriptors and use just the 1st one. The tls_array[]
  525          * is used only in set/get-thread_area() syscalls and for loading the
  526          * GDT descriptors. In FreeBSD we use just one GDT descriptor for TLS
  527          * so we will load just one.
  528          *
  529          * XXX: this doesn't work when a user space process tries to use more
  530          * than 1 TLS segment. Comment in the Linux sources says wine might do
  531          * this.
  532          */
  533 
  534         /*
  535          * we support just GLIBC TLS now
  536          * we should let 3 proceed as well because we use this segment so
  537          * if code does two subsequent calls it should succeed
  538          */
  539         if (idx != 6 && idx != -1 && idx != 3)
  540                 return (EINVAL);
  541 
  542         /*
  543          * we have to copy out the GDT entry we use
  544          * FreeBSD uses GDT entry #3 for storing %gs so load that
  545          *
  546          * XXX: what if a user space program doesn't check this value and tries
  547          * to use 6, 7 or 8?
  548          */
  549         idx = info.entry_number = 3;
  550         error = copyout(&info, args->desc, sizeof(struct l_user_desc));
  551         if (error)
  552                 return (error);
  553 
  554         if (LINUX_LDT_empty(&info)) {
  555                 a[0] = 0;
  556                 a[1] = 0;
  557         } else {
  558                 a[0] = LINUX_LDT_entry_a(&info);
  559                 a[1] = LINUX_LDT_entry_b(&info);
  560         }
  561 
  562         memcpy(&sd, &a, sizeof(a));
  563         /* this is taken from i386 version of cpu_set_user_tls() */
  564         critical_enter();
  565         /* set %gs */
  566         td->td_pcb->pcb_gsd = sd;
  567         PCPU_GET(fsgs_gdt)[1] = sd;
  568         load_gs(GSEL(GUGS_SEL, SEL_UPL));
  569         critical_exit();
  570 
  571         return (0);
  572 }
  573 
  574 int
  575 linux_get_thread_area(struct thread *td, struct linux_get_thread_area_args *args)
  576 {
  577 
  578         struct l_user_desc info;
  579         int error;
  580         int idx;
  581         struct l_desc_struct desc;
  582         struct segment_descriptor sd;
  583 
  584         error = copyin(args->desc, &info, sizeof(struct l_user_desc));
  585         if (error)
  586                 return (error);
  587 
  588         idx = info.entry_number;
  589         /* XXX: I am not sure if we want 3 to be allowed too. */
  590         if (idx != 6 && idx != 3)
  591                 return (EINVAL);
  592 
  593         idx = 3;
  594 
  595         memset(&info, 0, sizeof(info));
  596 
  597         sd = PCPU_GET(fsgs_gdt)[1];
  598 
  599         memcpy(&desc, &sd, sizeof(desc));
  600 
  601         info.entry_number = idx;
  602         info.base_addr = LINUX_GET_BASE(&desc);
  603         info.limit = LINUX_GET_LIMIT(&desc);
  604         info.seg_32bit = LINUX_GET_32BIT(&desc);
  605         info.contents = LINUX_GET_CONTENTS(&desc);
  606         info.read_exec_only = !LINUX_GET_WRITABLE(&desc);
  607         info.limit_in_pages = LINUX_GET_LIMIT_PAGES(&desc);
  608         info.seg_not_present = !LINUX_GET_PRESENT(&desc);
  609         info.useable = LINUX_GET_USEABLE(&desc);
  610 
  611         error = copyout(&info, args->desc, sizeof(struct l_user_desc));
  612         if (error)
  613                 return (EFAULT);
  614 
  615         return (0);
  616 }
  617 
  618 /* XXX: this wont work with module - convert it */
  619 int
  620 linux_mq_open(struct thread *td, struct linux_mq_open_args *args)
  621 {
  622 #ifdef P1003_1B_MQUEUE
  623         return (sys_kmq_open(td, (struct kmq_open_args *)args));
  624 #else
  625         return (ENOSYS);
  626 #endif
  627 }
  628 
  629 int
  630 linux_mq_unlink(struct thread *td, struct linux_mq_unlink_args *args)
  631 {
  632 #ifdef P1003_1B_MQUEUE
  633         return (sys_kmq_unlink(td, (struct kmq_unlink_args *)args));
  634 #else
  635         return (ENOSYS);
  636 #endif
  637 }
  638 
  639 int
  640 linux_mq_timedsend(struct thread *td, struct linux_mq_timedsend_args *args)
  641 {
  642 #ifdef P1003_1B_MQUEUE
  643         return (sys_kmq_timedsend(td, (struct kmq_timedsend_args *)args));
  644 #else
  645         return (ENOSYS);
  646 #endif
  647 }
  648 
  649 int
  650 linux_mq_timedreceive(struct thread *td, struct linux_mq_timedreceive_args *args)
  651 {
  652 #ifdef P1003_1B_MQUEUE
  653         return (sys_kmq_timedreceive(td, (struct kmq_timedreceive_args *)args));
  654 #else
  655         return (ENOSYS);
  656 #endif
  657 }
  658 
  659 int
  660 linux_mq_notify(struct thread *td, struct linux_mq_notify_args *args)
  661 {
  662 #ifdef P1003_1B_MQUEUE
  663         return (sys_kmq_notify(td, (struct kmq_notify_args *)args));
  664 #else
  665         return (ENOSYS);
  666 #endif
  667 }
  668 
  669 int
  670 linux_mq_getsetattr(struct thread *td, struct linux_mq_getsetattr_args *args)
  671 {
  672 #ifdef P1003_1B_MQUEUE
  673         return (sys_kmq_setattr(td, (struct kmq_setattr_args *)args));
  674 #else
  675         return (ENOSYS);
  676 #endif
  677 }
Cache object: 1246730d8fac3f0f0073c520db8e1495
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FreeBSD/Linux Kernel Cross Reference sys/i386/linux/linux_machdep.c

FreeBSD/Linux Kernel Cross Reference
sys/i386/linux/linux_machdep.c
