The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/i386/ibcs2/ibcs2_xenix.c

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    1 /*-
    2  * SPDX-License-Identifier: BSD-3-Clause
    3  *
    4  * Copyright (c) 1994 Sean Eric Fagan
    5  * Copyright (c) 1994 Søren Schmidt
    6  * Copyright (c) 1995 Steven Wallace
    7  * All rights reserved.
    8  *
    9  * Redistribution and use in source and binary forms, with or without
   10  * modification, are permitted provided that the following conditions
   11  * are met:
   12  * 1. Redistributions of source code must retain the above copyright
   13  *    notice, this list of conditions and the following disclaimer
   14  *    in this position and unchanged.
   15  * 2. Redistributions in binary form must reproduce the above copyright
   16  *    notice, this list of conditions and the following disclaimer in the
   17  *    documentation and/or other materials provided with the distribution.
   18  * 3. The name of the author 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 AUTHOR ``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 AUTHOR 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 __FBSDID("$FreeBSD: releng/12.0/sys/i386/ibcs2/ibcs2_xenix.c 326260 2017-11-27 15:08:52Z pfg $");
   35 
   36 #include <sys/param.h>
   37 #include <sys/systm.h>
   38 #include <sys/fcntl.h>
   39 #include <sys/namei.h> 
   40 #include <sys/sysproto.h>
   41 #include <sys/clock.h>
   42 #include <sys/jail.h>
   43 #include <sys/kernel.h>
   44 #include <sys/malloc.h>
   45 #include <sys/filio.h>
   46 #include <sys/vnode.h>
   47 #include <sys/syscallsubr.h>
   48 #include <sys/sysctl.h>
   49 #include <sys/sysent.h>
   50 #include <sys/unistd.h>
   51 
   52 #include <machine/cpu.h>
   53 
   54 #include <i386/ibcs2/ibcs2_types.h>
   55 #include <i386/ibcs2/ibcs2_unistd.h>
   56 #include <i386/ibcs2/ibcs2_signal.h>
   57 #include <i386/ibcs2/ibcs2_util.h>
   58 #include <i386/ibcs2/ibcs2_proto.h>
   59 #include <i386/ibcs2/ibcs2_xenix.h>
   60 #include <i386/ibcs2/ibcs2_xenix_syscall.h>
   61 
   62 
   63 extern struct sysent xenix_sysent[];
   64 
   65 int
   66 ibcs2_xenix(struct thread *td, struct ibcs2_xenix_args *uap)
   67 {
   68         struct trapframe *tf = td->td_frame;
   69         struct sysent *callp;
   70         u_int code;
   71         int error;
   72 
   73         code = (tf->tf_eax & 0xff00) >> 8;
   74         callp = &xenix_sysent[code];
   75 
   76         if (code < IBCS2_XENIX_MAXSYSCALL)
   77                 error = ((*callp->sy_call)(td, (void *)uap));
   78         else
   79                 error = ENOSYS;
   80         return (error);
   81 }
   82 
   83 int
   84 xenix_rdchk(td, uap)
   85         struct thread *td;
   86         struct xenix_rdchk_args *uap;
   87 {
   88         int data, error;
   89 
   90         DPRINTF(("IBCS2: 'xenix rdchk'\n"));
   91         
   92         error = kern_ioctl(td, uap->fd, FIONREAD, (caddr_t)&data);
   93         if (error)
   94                 return (error);
   95         td->td_retval[0] = data ? 1 : 0;
   96         return (0);
   97 }
   98 
   99 int
  100 xenix_chsize(td, uap)
  101         struct thread *td;
  102         struct xenix_chsize_args *uap;
  103 {
  104         struct ftruncate_args sa;
  105 
  106         DPRINTF(("IBCS2: 'xenix chsize'\n"));
  107         sa.fd = uap->fd;
  108         sa.length = uap->size;
  109         return sys_ftruncate(td, &sa);
  110 }
  111 
  112 
  113 int
  114 xenix_ftime(td, uap)
  115         struct thread *td;
  116         struct xenix_ftime_args *uap;
  117 {
  118         struct timeval tv;
  119         struct ibcs2_timeb {
  120                 unsigned long time __packed;
  121                 unsigned short millitm;
  122                 short timezone;
  123                 short dstflag;
  124         } itb;
  125 
  126         DPRINTF(("IBCS2: 'xenix ftime'\n"));
  127         microtime(&tv);
  128         itb.time = tv.tv_sec;
  129         itb.millitm = (tv.tv_usec / 1000);
  130         itb.timezone = tz_minuteswest;
  131         itb.dstflag = tz_dsttime != DST_NONE;
  132 
  133         return copyout((caddr_t)&itb, (caddr_t)uap->tp,
  134                        sizeof(struct ibcs2_timeb));
  135 }
  136 
  137 int
  138 xenix_nap(struct thread *td, struct xenix_nap_args *uap)
  139 {
  140         long period;
  141 
  142         DPRINTF(("IBCS2: 'xenix nap %d ms'\n", uap->millisec));
  143         period = (long)uap->millisec / (1000/hz);
  144         if (period)
  145                 pause("nap", period);
  146         return 0;
  147 }
  148 
  149 int
  150 xenix_utsname(struct thread *td, struct xenix_utsname_args *uap)
  151 {
  152         struct ibcs2_sco_utsname {
  153                 char sysname[9];
  154                 char nodename[9];
  155                 char release[16];
  156                 char kernelid[20];
  157                 char machine[9];
  158                 char bustype[9];
  159                 char sysserial[10];
  160                 unsigned short sysorigin;
  161                 unsigned short sysoem;
  162                 char numusers[9];
  163                 unsigned short numcpu;
  164         } ibcs2_sco_uname;
  165 
  166         DPRINTF(("IBCS2: 'xenix sco_utsname'\n"));
  167         bzero(&ibcs2_sco_uname, sizeof(struct ibcs2_sco_utsname));
  168         strncpy(ibcs2_sco_uname.sysname, ostype,
  169                 sizeof(ibcs2_sco_uname.sysname) - 1);
  170         getcredhostname(td->td_ucred, ibcs2_sco_uname.nodename,
  171             sizeof(ibcs2_sco_uname.nodename) - 1);
  172         strncpy(ibcs2_sco_uname.release, osrelease,
  173                 sizeof(ibcs2_sco_uname.release) - 1);
  174         strncpy(ibcs2_sco_uname.kernelid, version,
  175                 sizeof(ibcs2_sco_uname.kernelid) - 1);
  176         strncpy(ibcs2_sco_uname.machine, machine,
  177                 sizeof(ibcs2_sco_uname.machine) - 1);
  178         strncpy(ibcs2_sco_uname.bustype, "ISA/EISA",
  179                 sizeof(ibcs2_sco_uname.bustype) - 1);
  180         strncpy(ibcs2_sco_uname.sysserial, "no charge",
  181                 sizeof(ibcs2_sco_uname.sysserial) - 1);
  182         strncpy(ibcs2_sco_uname.numusers, "unlim",
  183                 sizeof(ibcs2_sco_uname.numusers) - 1);
  184         ibcs2_sco_uname.sysorigin = 0xFFFF;
  185         ibcs2_sco_uname.sysoem = 0xFFFF;
  186         ibcs2_sco_uname.numcpu = 1;
  187         return copyout((caddr_t)&ibcs2_sco_uname,
  188                        (caddr_t)(void *)(intptr_t)uap->addr,
  189                        sizeof(struct ibcs2_sco_utsname));
  190 }
  191 
  192 int
  193 xenix_scoinfo(struct thread *td, struct xenix_scoinfo_args *uap)
  194 {
  195   /* scoinfo (not documented) */
  196   td->td_retval[0] = 0;
  197   return 0;
  198 }
  199 
  200 int     
  201 xenix_eaccess(struct thread *td, struct xenix_eaccess_args *uap)
  202 {
  203         char *path;
  204         int error, bsd_flags;
  205 
  206         bsd_flags = 0;
  207         if (uap->flags & IBCS2_R_OK)
  208                 bsd_flags |= R_OK;
  209         if (uap->flags & IBCS2_W_OK)
  210                 bsd_flags |= W_OK;
  211         if (uap->flags & IBCS2_X_OK)
  212                 bsd_flags |= X_OK;
  213 
  214         CHECKALTEXIST(td, uap->path, &path);
  215         error = kern_accessat(td, AT_FDCWD, path, UIO_SYSSPACE,
  216             AT_EACCESS, bsd_flags);
  217         free(path, M_TEMP);
  218         return (error);
  219 }

Cache object: a78d878870ff27950cb99af58d91b352


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