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_other.c

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    1 /*
    2  * Copyright (c) 1995 Steven Wallace
    3  * All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    8  * 1. Redistributions of source code must retain the above copyright
    9  *    notice, this list of conditions and the following disclaimer.
   10  * 2. The name of the author may not be used to endorse or promote products
   11  *    derived from this software without specific prior written permission
   12  *
   13  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   14  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   15  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   16  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   17  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   18  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   19  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   20  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   21  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   22  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   23  *
   24  * $FreeBSD: src/sys/i386/ibcs2/ibcs2_other.c,v 1.3.4.1 1999/09/05 08:11:27 peter Exp $
   25  */
   26 
   27 /*
   28  * IBCS2 compatibility module.
   29  */
   30 
   31 #include <sys/param.h>
   32 #include <sys/systm.h>
   33 #include <sys/proc.h>
   34 #include <sys/sysproto.h>
   35 #include <sys/kernel.h>
   36 
   37 #include <i386/ibcs2/ibcs2_types.h>
   38 #include <i386/ibcs2/ibcs2_signal.h>
   39 #include <i386/ibcs2/ibcs2_util.h>
   40 #include <i386/ibcs2/ibcs2_proto.h>
   41 
   42 #define IBCS2_SECURE_GETLUID 1
   43 #define IBCS2_SECURE_SETLUID 2
   44 
   45 int
   46 ibcs2_secure(struct proc *p, struct ibcs2_secure_args *uap, int *retval)
   47 {
   48         switch (uap->cmd) {
   49 
   50         case IBCS2_SECURE_GETLUID:              /* get login uid */
   51                 *retval = p->p_ucred->cr_uid;
   52                 return 0;
   53 
   54         case IBCS2_SECURE_SETLUID:              /* set login uid */
   55                 return EPERM;
   56 
   57         default:
   58                 printf("IBCS2: 'secure' cmd=%d not implemented\n", uap->cmd);
   59         }
   60 
   61         return EINVAL;
   62 }
   63 
   64 int
   65 ibcs2_lseek(struct proc *p, register struct ibcs2_lseek_args *uap, int *retval)
   66 {
   67         struct lseek_args largs;
   68         off_t lret;
   69         int error;
   70 
   71         largs.fd = uap->fd;
   72         largs.offset = uap->offset;
   73         largs.whence = uap->whence;
   74         error = lseek(p, &largs, (int *)&lret);
   75         *(long *)retval = lret;
   76         return (error);
   77 }
   78 
   79 #ifdef SPX_HACK
   80 #include <sys/socket.h>
   81 #include <sys/un.h>     
   82 
   83 int
   84 spx_open(struct proc *p, void *uap, int *retval)
   85 {
   86         struct socket_args sock;
   87         struct connect_args conn;
   88         struct sockaddr_un *Xaddr;
   89         caddr_t name;
   90         int fd, error;
   91         caddr_t sg = stackgap_init();
   92 
   93         /* obtain a socket. */
   94         DPRINTF(("SPX: open socket\n"));
   95         sock.domain = AF_UNIX;
   96         sock.type = SOCK_STREAM;
   97         sock.protocol = 0;
   98         error = socket(p, &sock, retval);
   99         if (error)
  100                 return error;
  101 
  102         /* connect the socket to standard X socket */
  103         DPRINTF(("SPX: connect to /tmp/X11-unix/X0\n"));
  104         Xaddr = stackgap_alloc(&sg, sizeof(struct sockaddr_un));
  105         Xaddr->sun_family = AF_UNIX;
  106         Xaddr->sun_len = sizeof(struct sockaddr_un) - sizeof(Xaddr->sun_path) +
  107           strlen(Xaddr->sun_path) + 1;
  108         copyout("/tmp/.X11-unix/X0", Xaddr->sun_path, 18);
  109 
  110         conn.s = fd = *retval;
  111         conn.name = (caddr_t)Xaddr;
  112         conn.namelen = sizeof(struct sockaddr_un);
  113         error = connect(p, &conn, retval);
  114         if (error) {
  115                 struct close_args cl;
  116                 cl.fd = fd;
  117                 close(p, &cl, retval);
  118                 return error;
  119         }
  120         *retval = fd;
  121         return 0;
  122 }
  123 #endif /* SPX_HACK */

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