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 
   25 #include <sys/cdefs.h>
   26 __FBSDID("$FreeBSD: releng/10.0/sys/i386/ibcs2/ibcs2_other.c 225617 2011-09-16 13:58:51Z kmacy $");
   27 
   28 /*
   29  * IBCS2 compatibility module.
   30  */
   31 
   32 #include "opt_spx_hack.h"
   33 
   34 #include <sys/param.h>
   35 #include <sys/systm.h>
   36 #include <sys/lock.h>
   37 #include <sys/mutex.h>
   38 #include <sys/syscallsubr.h>
   39 #include <sys/sysproto.h>
   40 #include <sys/un.h>
   41 
   42 #include <i386/ibcs2/ibcs2_types.h>
   43 #include <i386/ibcs2/ibcs2_signal.h>
   44 #include <i386/ibcs2/ibcs2_util.h>
   45 #include <i386/ibcs2/ibcs2_proto.h>
   46 
   47 #define IBCS2_SECURE_GETLUID 1
   48 #define IBCS2_SECURE_SETLUID 2
   49 
   50 int
   51 ibcs2_secure(struct thread *td, struct ibcs2_secure_args *uap)
   52 {
   53         switch (uap->cmd) {
   54 
   55         case IBCS2_SECURE_GETLUID:              /* get login uid */
   56                 td->td_retval[0] = td->td_ucred->cr_uid;
   57                 return 0;
   58 
   59         case IBCS2_SECURE_SETLUID:              /* set login uid */
   60                 return EPERM;
   61 
   62         default:
   63                 printf("IBCS2: 'secure' cmd=%d not implemented\n", uap->cmd);
   64         }
   65 
   66         return EINVAL;
   67 }
   68 
   69 int
   70 ibcs2_lseek(struct thread *td, register struct ibcs2_lseek_args *uap)
   71 {
   72         struct lseek_args largs;
   73         int error;
   74 
   75         largs.fd = uap->fd;
   76         largs.offset = uap->offset;
   77         largs.whence = uap->whence;
   78         error = sys_lseek(td, &largs);
   79         return (error);
   80 }
   81 
   82 #ifdef SPX_HACK
   83 #include <sys/socket.h>
   84 #include <sys/un.h>     
   85 
   86 int
   87 spx_open(struct thread *td)
   88 {
   89         struct socket_args sock;
   90         struct sockaddr_un sun;
   91         int fd, error;
   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 = sys_socket(td, &sock);
   99         if (error)
  100                 return error;
  101         fd = td->td_retval[0];
  102 
  103         /* connect the socket to standard X socket */
  104         DPRINTF(("SPX: connect to /tmp/X11-unix/X0\n"));
  105         sun.sun_family = AF_UNIX;
  106         strcpy(sun.sun_path, "/tmp/.X11-unix/X0");
  107         sun.sun_len = sizeof(struct sockaddr_un) - sizeof(sun.sun_path) +
  108             strlen(sun.sun_path) + 1;
  109 
  110         error = kern_connect(td, fd, (struct sockaddr *)&sun);
  111         if (error) {
  112                 kern_close(td, fd);
  113                 return error;
  114         }
  115         td->td_retval[0] = fd;
  116         return 0;
  117 }
  118 #endif /* SPX_HACK */

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