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  * Copyright (c) 1994 Sean Eric Fagan
    3  * Copyright (c) 1994 Søren Schmidt
    4  * Copyright (c) 1995 Steven Wallace
    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  *    in this position and unchanged.
   13  * 2. Redistributions in binary form must reproduce the above copyright
   14  *    notice, this list of conditions and the following disclaimer in the
   15  *    documentation and/or other materials provided with the distribution.
   16  * 3. The name of the author may not be used to endorse or promote products
   17  *    derived from this software without specific prior written permission
   18  *
   19  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   20  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   21  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   22  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   23  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   24  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   28  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   29  */
   30 
   31 #include <sys/cdefs.h>
   32 __FBSDID("$FreeBSD: releng/6.1/sys/i386/ibcs2/ibcs2_xenix.c 147820 2005-07-07 19:28:55Z jhb $");
   33 
   34 #include <sys/param.h>
   35 #include <sys/systm.h>
   36 #include <sys/namei.h> 
   37 #include <sys/sysproto.h>
   38 #include <sys/jail.h>
   39 #include <sys/kernel.h>
   40 #include <sys/malloc.h>
   41 #include <sys/filio.h>
   42 #include <sys/vnode.h>
   43 #include <sys/syscallsubr.h>
   44 #include <sys/sysctl.h>
   45 #include <sys/unistd.h>
   46 
   47 #include <machine/cpu.h>
   48 
   49 #include <i386/ibcs2/ibcs2_types.h>
   50 #include <i386/ibcs2/ibcs2_unistd.h>
   51 #include <i386/ibcs2/ibcs2_signal.h>
   52 #include <i386/ibcs2/ibcs2_util.h>
   53 #include <i386/ibcs2/ibcs2_proto.h>
   54 #include <i386/ibcs2/ibcs2_xenix.h>
   55 #include <i386/ibcs2/ibcs2_xenix_syscall.h>
   56 
   57 
   58 extern struct sysent xenix_sysent[];
   59 
   60 int
   61 ibcs2_xenix(struct thread *td, struct ibcs2_xenix_args *uap)
   62 {
   63         struct trapframe *tf = td->td_frame;
   64         struct sysent *callp;
   65         u_int code;
   66         int error;
   67 
   68         code = (tf->tf_eax & 0xff00) >> 8;
   69         callp = &xenix_sysent[code];
   70 
   71         if (code < IBCS2_XENIX_MAXSYSCALL) {
   72                 if ((callp->sy_narg & SYF_MPSAFE) == 0)
   73                         mtx_lock(&Giant);
   74                 error = ((*callp->sy_call)(td, (void *)uap));
   75                 if ((callp->sy_narg & SYF_MPSAFE) == 0)
   76                         mtx_unlock(&Giant);
   77         } else
   78                 error = ENOSYS;
   79         return (error);
   80 }
   81 
   82 int
   83 xenix_rdchk(td, uap)
   84         struct thread *td;
   85         struct xenix_rdchk_args *uap;
   86 {
   87         int error;
   88         struct ioctl_args sa;
   89         caddr_t sg = stackgap_init();
   90 
   91         DPRINTF(("IBCS2: 'xenix rdchk'\n"));
   92         sa.fd = uap->fd;
   93         sa.com = FIONREAD;
   94         sa.data = stackgap_alloc(&sg, sizeof(int));
   95         if ((error = ioctl(td, &sa)) != 0)
   96                 return error;
   97         td->td_retval[0] = (*((int*)sa.data)) ? 1 : 0;
   98         return 0;
   99 }
  100 
  101 int
  102 xenix_chsize(td, uap)
  103         struct thread *td;
  104         struct xenix_chsize_args *uap;
  105 {
  106         struct ftruncate_args sa;
  107 
  108         DPRINTF(("IBCS2: 'xenix chsize'\n"));
  109         sa.fd = uap->fd;
  110         sa.pad = 0;
  111         sa.length = uap->size;
  112         return ftruncate(td, &sa);
  113 }
  114 
  115 
  116 int
  117 xenix_ftime(td, uap)
  118         struct thread *td;
  119         struct xenix_ftime_args *uap;
  120 {
  121         struct timeval tv;
  122         struct ibcs2_timeb {
  123                 unsigned long time __packed;
  124                 unsigned short millitm;
  125                 short timezone;
  126                 short dstflag;
  127         } itb;
  128 
  129         DPRINTF(("IBCS2: 'xenix ftime'\n"));
  130         microtime(&tv);
  131         itb.time = tv.tv_sec;
  132         itb.millitm = (tv.tv_usec / 1000);
  133         itb.timezone = tz_minuteswest;
  134         itb.dstflag = tz_dsttime != DST_NONE;
  135 
  136         return copyout((caddr_t)&itb, (caddr_t)uap->tp,
  137                        sizeof(struct ibcs2_timeb));
  138 }
  139 
  140 int
  141 xenix_nap(struct thread *td, struct xenix_nap_args *uap)
  142 {
  143         long period;
  144 
  145         DPRINTF(("IBCS2: 'xenix nap %d ms'\n", uap->millisec));
  146         period = (long)uap->millisec / (1000/hz);
  147         if (period)
  148                 while (tsleep(&period, PPAUSE, "nap", period) 
  149                        != EWOULDBLOCK) ;
  150         return 0;
  151 }
  152 
  153 int
  154 xenix_utsname(struct thread *td, struct xenix_utsname_args *uap)
  155 {
  156         struct ibcs2_sco_utsname {
  157                 char sysname[9];
  158                 char nodename[9];
  159                 char release[16];
  160                 char kernelid[20];
  161                 char machine[9];
  162                 char bustype[9];
  163                 char sysserial[10];
  164                 unsigned short sysorigin;
  165                 unsigned short sysoem;
  166                 char numusers[9];
  167                 unsigned short numcpu;
  168         } ibcs2_sco_uname;
  169 
  170         DPRINTF(("IBCS2: 'xenix sco_utsname'\n"));
  171         bzero(&ibcs2_sco_uname, sizeof(struct ibcs2_sco_utsname));
  172         strncpy(ibcs2_sco_uname.sysname, ostype,
  173                 sizeof(ibcs2_sco_uname.sysname) - 1);
  174         getcredhostname(td->td_ucred, ibcs2_sco_uname.nodename,
  175             sizeof(ibcs2_sco_uname.nodename) - 1);
  176         strncpy(ibcs2_sco_uname.release, osrelease,
  177                 sizeof(ibcs2_sco_uname.release) - 1);
  178         strncpy(ibcs2_sco_uname.kernelid, version,
  179                 sizeof(ibcs2_sco_uname.kernelid) - 1);
  180         strncpy(ibcs2_sco_uname.machine, machine,
  181                 sizeof(ibcs2_sco_uname.machine) - 1);
  182         strncpy(ibcs2_sco_uname.bustype, "ISA/EISA",
  183                 sizeof(ibcs2_sco_uname.bustype) - 1);
  184         strncpy(ibcs2_sco_uname.sysserial, "no charge",
  185                 sizeof(ibcs2_sco_uname.sysserial) - 1);
  186         strncpy(ibcs2_sco_uname.numusers, "unlim",
  187                 sizeof(ibcs2_sco_uname.numusers) - 1);
  188         ibcs2_sco_uname.sysorigin = 0xFFFF;
  189         ibcs2_sco_uname.sysoem = 0xFFFF;
  190         ibcs2_sco_uname.numcpu = 1;
  191         return copyout((caddr_t)&ibcs2_sco_uname,
  192                        (caddr_t)(void *)(intptr_t)uap->addr,
  193                        sizeof(struct ibcs2_sco_utsname));
  194 }
  195 
  196 int
  197 xenix_scoinfo(struct thread *td, struct xenix_scoinfo_args *uap)
  198 {
  199   /* scoinfo (not documented) */
  200   td->td_retval[0] = 0;
  201   return 0;
  202 }
  203 
  204 int     
  205 xenix_eaccess(struct thread *td, struct xenix_eaccess_args *uap)
  206 {
  207         char *path;
  208         int error, bsd_flags;
  209 
  210         bsd_flags = 0;
  211         if (uap->flags & IBCS2_R_OK)
  212                 bsd_flags |= R_OK;
  213         if (uap->flags & IBCS2_W_OK)
  214                 bsd_flags |= W_OK;
  215         if (uap->flags & IBCS2_X_OK)
  216                 bsd_flags |= X_OK;
  217 
  218         CHECKALTEXIST(td, uap->path, &path);
  219         error = kern_access(td, path, UIO_SYSSPACE, bsd_flags);
  220         free(path, M_TEMP);
  221         return (error);
  222 }

Cache object: ceb1f785d8630cfde8ecb7fc3f78b9b8


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