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 withough 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  * $FreeBSD: stable/3/sys/i386/ibcs2/ibcs2_xenix.c 50582 1999-08-29 16:07:53Z peter $
   31  */
   32 
   33 #include <sys/param.h>
   34 #include <sys/systm.h>
   35 #include <sys/namei.h> 
   36 #include <sys/sysproto.h>
   37 #include <sys/kernel.h>
   38 #include <sys/filio.h>
   39 #include <sys/vnode.h>
   40 #include <sys/sysctl.h>
   41 
   42 #include <machine/cpu.h>
   43 
   44 #include <i386/ibcs2/ibcs2_types.h>
   45 #include <i386/ibcs2/ibcs2_unistd.h>
   46 #include <i386/ibcs2/ibcs2_signal.h>
   47 #include <i386/ibcs2/ibcs2_util.h>
   48 #include <i386/ibcs2/ibcs2_proto.h>
   49 #include <i386/ibcs2/ibcs2_xenix.h>
   50 #include <i386/ibcs2/ibcs2_xenix_syscall.h>
   51 
   52 extern struct sysent xenix_sysent[];
   53 
   54 int
   55 ibcs2_xenix(struct proc *p, struct ibcs2_xenix_args *uap)
   56 {
   57         struct trapframe *tf = p->p_md.md_regs;
   58         struct sysent *callp;
   59         u_int code;             
   60 
   61         code = (tf->tf_eax & 0xff00) >> 8;
   62         callp = &xenix_sysent[code];
   63 
   64         if(code < IBCS2_XENIX_MAXSYSCALL)
   65           return((*callp->sy_call)(p, (void *)uap));
   66         else
   67           return ENOSYS;
   68 }
   69 
   70 int
   71 xenix_rdchk(p, uap)
   72         struct proc *p;
   73         struct xenix_rdchk_args *uap;
   74 {
   75         int error;
   76         struct ioctl_args sa;
   77         caddr_t sg = stackgap_init();
   78 
   79         DPRINTF(("IBCS2: 'xenix rdchk'\n"));
   80         SCARG(&sa, fd) = SCARG(uap, fd);
   81         SCARG(&sa, com) = FIONREAD;
   82         SCARG(&sa, data) = stackgap_alloc(&sg, sizeof(int));
   83         if (error = ioctl(p, &sa))
   84                 return error;
   85         p->p_retval[0] = (*((int*)SCARG(&sa, data))) ? 1 : 0;
   86         return 0;
   87 }
   88 
   89 int
   90 xenix_chsize(p, uap)
   91         struct proc *p;
   92         struct xenix_chsize_args *uap;
   93 {
   94         struct ftruncate_args sa;
   95 
   96         DPRINTF(("IBCS2: 'xenix chsize'\n"));
   97         SCARG(&sa, fd) = SCARG(uap, fd);
   98         SCARG(&sa, pad) = 0;
   99         SCARG(&sa, length) = SCARG(uap, size);
  100         return ftruncate(p, &sa);
  101 }
  102 
  103 
  104 int
  105 xenix_ftime(p, uap)
  106         struct proc *p;
  107         struct xenix_ftime_args *uap;
  108 {
  109         struct timeval tv;
  110         struct ibcs2_timeb {
  111                 unsigned long time __attribute__((packed));
  112                 unsigned short millitm;
  113                 short timezone;
  114                 short dstflag;
  115         } itb;
  116 
  117         DPRINTF(("IBCS2: 'xenix ftime'\n"));
  118         microtime(&tv);
  119         itb.time = tv.tv_sec;
  120         itb.millitm = (tv.tv_usec / 1000);
  121         itb.timezone = tz.tz_minuteswest;
  122         itb.dstflag = tz.tz_dsttime != DST_NONE;
  123 
  124         return copyout((caddr_t)&itb, (caddr_t)SCARG(uap, tp),
  125                        sizeof(struct ibcs2_timeb));
  126 }
  127 
  128 int
  129 xenix_nap(struct proc *p, struct xenix_nap_args *uap)
  130 {
  131         long period;
  132 
  133         DPRINTF(("IBCS2: 'xenix nap %d ms'\n", SCARG(uap, millisec)));
  134         period = (long)SCARG(uap, millisec) / (1000/hz);
  135         if (period)
  136                 while (tsleep(&period, PPAUSE, "nap", period) 
  137                        != EWOULDBLOCK) ;
  138         return 0;
  139 }
  140 
  141 int
  142 xenix_utsname(struct proc *p, struct xenix_utsname_args *uap)
  143 {
  144         struct ibcs2_sco_utsname {
  145                 char sysname[9];
  146                 char nodename[9];
  147                 char release[16];
  148                 char kernelid[20];
  149                 char machine[9];
  150                 char bustype[9];
  151                 char sysserial[10];
  152                 unsigned short sysorigin;
  153                 unsigned short sysoem;
  154                 char numusers[9];
  155                 unsigned short numcpu;
  156         } ibcs2_sco_uname;
  157 
  158         DPRINTF(("IBCS2: 'xenix sco_utsname'\n"));
  159         bzero(&ibcs2_sco_uname, sizeof(struct ibcs2_sco_utsname));
  160         strncpy(ibcs2_sco_uname.sysname, ostype,
  161                 sizeof(ibcs2_sco_uname.sysname) - 1);
  162         strncpy(ibcs2_sco_uname.nodename, hostname,
  163                 sizeof(ibcs2_sco_uname.nodename) - 1);
  164         strncpy(ibcs2_sco_uname.release, osrelease,
  165                 sizeof(ibcs2_sco_uname.release) - 1);
  166         strncpy(ibcs2_sco_uname.kernelid, version,
  167                 sizeof(ibcs2_sco_uname.kernelid) - 1);
  168         strncpy(ibcs2_sco_uname.machine, machine,
  169                 sizeof(ibcs2_sco_uname.machine) - 1);
  170         strncpy(ibcs2_sco_uname.bustype, "ISA/EISA",
  171                 sizeof(ibcs2_sco_uname.bustype) - 1);
  172         strncpy(ibcs2_sco_uname.sysserial, "no charge",
  173                 sizeof(ibcs2_sco_uname.sysserial) - 1);
  174         strncpy(ibcs2_sco_uname.numusers, "unlim",
  175                 sizeof(ibcs2_sco_uname.numusers) - 1);
  176         ibcs2_sco_uname.sysorigin = 0xFFFF;
  177         ibcs2_sco_uname.sysoem = 0xFFFF;
  178         ibcs2_sco_uname.numcpu = 1;
  179         return copyout((caddr_t)&ibcs2_sco_uname,
  180                        (caddr_t)(void *)(intptr_t)uap->addr,
  181                        sizeof(struct ibcs2_sco_utsname));
  182 }
  183 
  184 int
  185 xenix_scoinfo(struct proc *p, struct xenix_scoinfo_args *uap)
  186 {
  187   /* scoinfo (not documented) */
  188   p->p_retval[0] = 0;
  189   return 0;
  190 }
  191 
  192 int     
  193 xenix_eaccess(struct proc *p, struct xenix_eaccess_args *uap)
  194 {
  195         struct ucred *cred = p->p_ucred;
  196         struct vnode *vp;
  197         struct nameidata nd;
  198         int error, flags;
  199         caddr_t sg = stackgap_init();
  200 
  201         CHECKALTEXIST(p, &sg, SCARG(uap, path));
  202 
  203         NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE,
  204             SCARG(uap, path), p);
  205         if (error = namei(&nd))
  206                 return error;
  207         vp = nd.ni_vp;
  208 
  209         /* Flags == 0 means only check for existence. */
  210         if (SCARG(uap, flags)) {
  211                 flags = 0;
  212                 if (SCARG(uap, flags) & IBCS2_R_OK)
  213                         flags |= VREAD;
  214                 if (SCARG(uap, flags) & IBCS2_W_OK)
  215                         flags |= VWRITE;
  216                 if (SCARG(uap, flags) & IBCS2_X_OK)
  217                         flags |= VEXEC;
  218                 if ((flags & VWRITE) == 0 || (error = vn_writechk(vp)) == 0)
  219                         error = VOP_ACCESS(vp, flags, cred, p);
  220         }
  221         vput(vp);
  222         return error;
  223 }

Cache object: 8e8000226977874e7e8e2aea9b95214d


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