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_socksys.c

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    1 /*
    2  * Copyright (c) 1994, 1995 Scott Bartram
    3  * Copyright (c) 1994 Arne H Juul
    4  * All rights reserved.
    5  *
    6  * Redistribution and use in source and binary forms, with or without
    7  * modification, are permitted provided that the following conditions
    8  * are met:
    9  * 1. Redistributions of source code must retain the above copyright
   10  *    notice, this list of conditions and the following disclaimer.
   11  * 2. The name of the author may not be used to endorse or promote products
   12  *    derived from this software without specific prior written permission
   13  *
   14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   15  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   16  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   17  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   18  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   19  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   20  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   21  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   23  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   24  *
   25  * $FreeBSD: releng/5.0/sys/i386/ibcs2/ibcs2_socksys.c 93593 2002-04-01 21:31:13Z jhb $
   26  */
   27 
   28 #include <sys/param.h>
   29 #include <sys/systm.h>
   30 #include <sys/sysproto.h>
   31 #include <sys/jail.h>
   32 #include <sys/kernel.h>
   33 #include <sys/sysctl.h>
   34 
   35 #include <i386/ibcs2/ibcs2_socksys.h>
   36 #include <i386/ibcs2/ibcs2_util.h>
   37 
   38 /* Local structures */
   39 struct getipdomainname_args {
   40         char    *ipdomainname;
   41         int     len;
   42 };
   43 
   44 struct setipdomainname_args {
   45         char    *ipdomainname;
   46         int     len;
   47 };
   48 
   49 /* Local prototypes */
   50 static int ibcs2_getipdomainname(struct thread *,
   51                                       struct getipdomainname_args *);
   52 static int ibcs2_setipdomainname(struct thread *,
   53                                       struct setipdomainname_args *);
   54 
   55 /*
   56  * iBCS2 socksys calls.
   57  */
   58 
   59 int
   60 ibcs2_socksys(td, uap)
   61         register struct thread *td;
   62         register struct ibcs2_socksys_args *uap;
   63 {
   64         int error;
   65         int realargs[7]; /* 1 for command, 6 for recvfrom */
   66         void *passargs;
   67 
   68         /*
   69          * SOCKET should only be legal on /dev/socksys.
   70          * GETIPDOMAINNAME should only be legal on /dev/socksys ?
   71          * The others are (and should be) only legal on sockets.
   72          */
   73 
   74         if ((error = copyin(uap->argsp, (caddr_t)realargs, sizeof(realargs))) != 0)
   75                 return error;
   76         DPRINTF(("ibcs2_socksys: %08x %08x %08x %08x %08x %08x %08x\n",
   77                realargs[0], realargs[1], realargs[2], realargs[3], 
   78                realargs[4], realargs[5], realargs[6]));
   79 
   80         passargs = (void *)(realargs + 1);
   81         switch (realargs[0]) {
   82         case SOCKSYS_ACCEPT:
   83                 return accept(td, passargs);
   84         case SOCKSYS_BIND:
   85                 return bind(td, passargs);
   86         case SOCKSYS_CONNECT:
   87                 return connect(td, passargs);
   88         case SOCKSYS_GETPEERNAME:
   89                 return getpeername(td, passargs);
   90         case SOCKSYS_GETSOCKNAME:
   91                 return getsockname(td, passargs);
   92         case SOCKSYS_GETSOCKOPT:
   93                 return getsockopt(td, passargs);
   94         case SOCKSYS_LISTEN:
   95                 return listen(td, passargs);
   96         case SOCKSYS_RECV:
   97                 realargs[5] = realargs[6] = 0;
   98                 /* FALLTHROUGH */
   99         case SOCKSYS_RECVFROM:
  100                 return recvfrom(td, passargs);
  101         case SOCKSYS_SEND:
  102                 realargs[5] = realargs[6] = 0;
  103                 /* FALLTHROUGH */
  104         case SOCKSYS_SENDTO:
  105                 return sendto(td, passargs);
  106         case SOCKSYS_SETSOCKOPT:
  107                 return setsockopt(td, passargs);
  108         case SOCKSYS_SHUTDOWN:
  109                 return shutdown(td, passargs);
  110         case SOCKSYS_SOCKET:
  111                 return socket(td, passargs);
  112         case SOCKSYS_SELECT:
  113                 return select(td, passargs);
  114         case SOCKSYS_GETIPDOMAIN:
  115                 return ibcs2_getipdomainname(td, passargs);
  116         case SOCKSYS_SETIPDOMAIN:
  117                 return ibcs2_setipdomainname(td, passargs);
  118         case SOCKSYS_ADJTIME:
  119                 return adjtime(td, passargs);
  120         case SOCKSYS_SETREUID:
  121                 return setreuid(td, passargs);
  122         case SOCKSYS_SETREGID:
  123                 return setregid(td, passargs);
  124         case SOCKSYS_GETTIME:
  125                 return gettimeofday(td, passargs);
  126         case SOCKSYS_SETTIME:
  127                 return settimeofday(td, passargs);
  128         case SOCKSYS_GETITIMER:
  129                 return getitimer(td, passargs);
  130         case SOCKSYS_SETITIMER:
  131                 return setitimer(td, passargs);
  132 
  133         default:
  134                 printf("socksys unknown %08x %08x %08x %08x %08x %08x %08x\n",
  135                        realargs[0], realargs[1], realargs[2], realargs[3], 
  136                        realargs[4], realargs[5], realargs[6]);
  137                 return EINVAL;
  138         }
  139         /* NOTREACHED */
  140 }
  141 
  142 /* ARGSUSED */
  143 static int
  144 ibcs2_getipdomainname(td, uap)
  145         struct thread *td;
  146         struct getipdomainname_args *uap;
  147 {
  148         char hname[MAXHOSTNAMELEN], *dptr;
  149         int len;
  150 
  151         /* Get the domain name */
  152         getcredhostname(td->td_ucred, hname, sizeof(hname));
  153 
  154         dptr = index(hname, '.');
  155         if ( dptr )
  156                 dptr++;
  157         else
  158                 /* Make it effectively an empty string */
  159                 dptr = hname + strlen(hname);
  160         
  161         len = strlen(dptr) + 1;
  162         if ((u_int)uap->len > len + 1)
  163                 uap->len = len + 1;
  164         return (copyout((caddr_t)dptr, (caddr_t)uap->ipdomainname, uap->len));
  165 }
  166 
  167 /* ARGSUSED */
  168 static int
  169 ibcs2_setipdomainname(td, uap)
  170         struct thread *td;
  171         struct setipdomainname_args *uap;
  172 {
  173         char hname[MAXHOSTNAMELEN], *ptr;
  174         int error, sctl[2], hlen;
  175 
  176         if ((error = suser(td)))
  177                 return (error);
  178 
  179         /* W/out a hostname a domain-name is nonsense */
  180         if ( strlen(hostname) == 0 )
  181                 return EINVAL;
  182 
  183         /* Get the host's unqualified name (strip off the domain) */
  184         snprintf(hname, sizeof(hname), "%s", hostname);
  185         ptr = index(hname, '.');
  186         if ( ptr != NULL ) {
  187                 ptr++;
  188                 *ptr = '\0';
  189         } else
  190                 strcat(hname, ".");
  191 
  192         /* Set ptr to the end of the string so we can append to it */
  193         hlen = strlen(hname);
  194         ptr = hname + hlen;
  195         if ((u_int)uap->len > (sizeof (hname) - hlen - 1))
  196                 return EINVAL;
  197 
  198         /* Append the ipdomain to the end */
  199         error = copyin((caddr_t)uap->ipdomainname, ptr, uap->len);
  200         if (error)
  201                 return (error);
  202 
  203         /* 'sethostname' with the new information */
  204         sctl[0] = CTL_KERN;
  205         sctl[1] = KERN_HOSTNAME;
  206         hlen = strlen(hname) + 1;
  207         return (kernel_sysctl(td, sctl, 2, 0, 0, hname, hlen, 0));
  208 }

Cache object: f6c0930f4e38e33917455df707bc7bf2


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