svr4_ioctl.c

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    1 /*      $NetBSD: svr4_ioctl.c,v 1.27 2005/12/11 12:20:26 christos Exp $  */
    2 
    3 /*-
    4  * Copyright (c) 1994 The NetBSD Foundation, Inc.
    5  * All rights reserved.
    6  *
    7  * This code is derived from software contributed to The NetBSD Foundation
    8  * by Christos Zoulas.
    9  *
   10  * Redistribution and use in source and binary forms, with or without
   11  * modification, are permitted provided that the following conditions
   12  * are met:
   13  * 1. Redistributions of source code must retain the above copyright
   14  *    notice, this list of conditions and the following disclaimer.
   15  * 2. Redistributions in binary form must reproduce the above copyright
   16  *    notice, this list of conditions and the following disclaimer in the
   17  *    documentation and/or other materials provided with the distribution.
   18  * 3. All advertising materials mentioning features or use of this software
   19  *    must display the following acknowledgement:
   20  *        This product includes software developed by the NetBSD
   21  *        Foundation, Inc. and its contributors.
   22  * 4. Neither the name of The NetBSD Foundation nor the names of its
   23  *    contributors may be used to endorse or promote products derived
   24  *    from this software without specific prior written permission.
   25  *
   26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
   27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
   28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
   30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   36  * POSSIBILITY OF SUCH DAMAGE.
   37  */
   38 
   39 #include <sys/cdefs.h>
   40 __KERNEL_RCSID(0, "$NetBSD: svr4_ioctl.c,v 1.27 2005/12/11 12:20:26 christos Exp $");
   41 
   42 #include <sys/param.h>
   43 #include <sys/proc.h>
   44 #include <sys/systm.h>
   45 #include <sys/file.h>
   46 #include <sys/filedesc.h>
   47 #include <sys/ioctl.h>
   48 #include <sys/termios.h>
   49 #include <sys/tty.h>
   50 #include <sys/socket.h>
   51 #include <sys/ioctl.h>
   52 #include <sys/mount.h>
   53 #include <net/if.h>
   54 #include <sys/malloc.h>
   55 
   56 #include <sys/sa.h>
   57 #include <sys/syscallargs.h>
   58 
   59 #include <compat/sys/socket.h>
   60 
   61 #include <compat/svr4/svr4_types.h>
   62 #include <compat/svr4/svr4_util.h>
   63 #include <compat/svr4/svr4_signal.h>
   64 #include <compat/svr4/svr4_lwp.h>
   65 #include <compat/svr4/svr4_ucontext.h>
   66 #include <compat/svr4/svr4_syscallargs.h>
   67 #include <compat/svr4/svr4_stropts.h>
   68 #include <compat/svr4/svr4_ioctl.h>
   69 #include <compat/svr4/svr4_termios.h>
   70 #include <compat/svr4/svr4_ttold.h>
   71 #include <compat/svr4/svr4_filio.h>
   72 #include <compat/svr4/svr4_sockio.h>
   73 
   74 #ifdef DEBUG_SVR4
   75 static void svr4_decode_cmd __P((u_long, char *, char *, int *, int *));
   76 /*
   77  * Decode an ioctl command symbolically
   78  */
   79 static void
   80 svr4_decode_cmd(cmd, dir, c, num, argsiz)
   81         u_long            cmd;
   82         char             *dir, *c;
   83         int              *num, *argsiz;
   84 {
   85         if (cmd & SVR4_IOC_VOID)
   86                 *dir++ = 'V';
   87         if (cmd & SVR4_IOC_IN)
   88                 *dir++ = 'R';
   89         if (cmd & SVR4_IOC_OUT)
   90                 *dir++ = 'W';
   91         *dir = '\0';
   92         if (cmd & SVR4_IOC_INOUT)
   93                 *argsiz = (cmd >> 16) & 0xff;
   94         else
   95                 *argsiz = -1;
   96 
   97         *c = (cmd >> 8) & 0xff;
   98         *num = cmd & 0xff;
   99 }
  100 #endif
  101 
  102 int
  103 svr4_sys_ioctl(l, v, retval)
  104         struct lwp *l;
  105         void *v;
  106         register_t *retval;
  107 {
  108         struct svr4_sys_ioctl_args *uap = v;
  109         struct proc *p = l->l_proc;
  110         struct file     *fp;
  111         struct filedesc *fdp;
  112         u_long           cmd;
  113         int              error;
  114         int (*fun) __P((struct file *, struct lwp *, register_t *,
  115                         int, u_long, caddr_t));
  116 #ifdef DEBUG_SVR4
  117         char             dir[4];
  118         char             c;
  119         int              num;
  120         int              argsiz;
  121 
  122         svr4_decode_cmd(SCARG(uap, com), dir, &c, &num, &argsiz);
  123 
  124         uprintf("svr4_ioctl(%d, _IO%s(%c, %d, %d), %p);\n", SCARG(uap, fd),
  125             dir, c, num, argsiz, SCARG(uap, data));
  126 #endif
  127         fdp = p->p_fd;
  128         cmd = SCARG(uap, com);
  129 
  130         if ((fp = fd_getfile(fdp, SCARG(uap, fd))) == NULL)
  131                 return EBADF;
  132 
  133         FILE_USE(fp);
  134 
  135         if ((fp->f_flag & (FREAD | FWRITE)) == 0) {
  136                 error = EBADF;
  137                 goto out;
  138         }
  139 
  140         switch (cmd & 0xff00) {
  141         case SVR4_tIOC:
  142                 fun = svr4_ttold_ioctl;
  143                 break;
  144 
  145         case SVR4_TIOC:
  146                 fun = svr4_term_ioctl;
  147                 break;
  148 
  149         case SVR4_STR:
  150                 fun = svr4_stream_ioctl;
  151                 break;
  152 
  153         case SVR4_FIOC:
  154                 fun = svr4_fil_ioctl;
  155                 break;
  156 
  157         case SVR4_SIOC:
  158                 fun = svr4_sock_ioctl;
  159                 break;
  160 
  161         case SVR4_XIOC:
  162                 /* We do not support those */
  163                 error = EINVAL;
  164                 goto out;
  165 
  166         default:
  167                 DPRINTF(("Unimplemented ioctl %lx\n", cmd));
  168                 error = 0;      /* XXX: really ENOSYS */
  169                 goto out;
  170         }
  171 
  172         error = (*fun)(fp, l, retval, SCARG(uap, fd), cmd, SCARG(uap, data));
  173 out:
  174         FILE_UNUSE(fp, l);
  175         return (error);
  176 }

Cache object: 17a8cbf8068bf714a810f915f235c46b

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FreeBSD/Linux Kernel Cross Reference sys/compat/svr4/svr4_ioctl.c

FreeBSD/Linux Kernel Cross Reference
sys/compat/svr4/svr4_ioctl.c