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/compat/svr4_32/svr4_32_ioctl.c

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    1 /*      $NetBSD: svr4_32_ioctl.c,v 1.21 2008/04/28 20:23:46 martin Exp $         */
    2 
    3 /*-
    4  * Copyright (c) 1994, 2008 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  *
   19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
   20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
   21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
   23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   29  * POSSIBILITY OF SUCH DAMAGE.
   30  */
   31 
   32 #include <sys/cdefs.h>
   33 __KERNEL_RCSID(0, "$NetBSD: svr4_32_ioctl.c,v 1.21 2008/04/28 20:23:46 martin Exp $");
   34 
   35 #include <sys/param.h>
   36 #include <sys/proc.h>
   37 #include <sys/systm.h>
   38 #include <sys/file.h>
   39 #include <sys/filedesc.h>
   40 #include <sys/ioctl.h>
   41 #include <sys/termios.h>
   42 #include <sys/tty.h>
   43 #include <sys/socket.h>
   44 #include <sys/mount.h>
   45 #include <net/if.h>
   46 #include <sys/malloc.h>
   47 
   48 #include <sys/syscallargs.h>
   49 
   50 #include <compat/sys/socket.h>
   51 
   52 #include <compat/svr4_32/svr4_32_types.h>
   53 #include <compat/svr4_32/svr4_32_util.h>
   54 #include <compat/svr4_32/svr4_32_signal.h>
   55 #include <compat/svr4_32/svr4_32_lwp.h>
   56 #include <compat/svr4_32/svr4_32_ucontext.h>
   57 #include <compat/svr4_32/svr4_32_syscallargs.h>
   58 #include <compat/svr4_32/svr4_32_stropts.h>
   59 #include <compat/svr4_32/svr4_32_ioctl.h>
   60 #include <compat/svr4_32/svr4_32_termios.h>
   61 #include <compat/svr4/svr4_ttold.h>
   62 #include <compat/svr4/svr4_filio.h>
   63 #include <compat/svr4_32/svr4_32_sockio.h>
   64 
   65 
   66 #ifdef DEBUG_SVR4
   67 static void svr4_32_decode_cmd(netbsd32_u_long, char *, char *, int *, int *);
   68 /*
   69  * Decode an ioctl command symbolically
   70  */
   71 static void
   72 svr4_32_decode_cmd(cmd, dir, c, num, argsiz)
   73         netbsd32_u_long   cmd;
   74         char             *dir, *c;
   75         int              *num, *argsiz;
   76 {
   77         if (cmd & SVR4_IOC_VOID)
   78                 *dir++ = 'V';
   79         if (cmd & SVR4_IOC_IN)
   80                 *dir++ = 'R';
   81         if (cmd & SVR4_IOC_OUT)
   82                 *dir++ = 'W';
   83         *dir = '\0';
   84         if (cmd & SVR4_IOC_INOUT)
   85                 *argsiz = (cmd >> 16) & 0xff;
   86         else
   87                 *argsiz = -1;
   88 
   89         *c = (cmd >> 8) & 0xff;
   90         *num = cmd & 0xff;
   91 }
   92 #endif
   93 
   94 int
   95 svr4_32_sys_ioctl(struct lwp *l, const struct svr4_32_sys_ioctl_args *uap, register_t *retval)
   96 {
   97         file_t          *fp;
   98         u_long           cmd;
   99         int error;
  100         int (*fun)(file_t *, struct lwp *, register_t *, int, u_long, void *);
  101 #ifdef DEBUG_SVR4
  102         char             dir[4];
  103         char             c;
  104         int              num;
  105         int              argsiz;
  106 
  107         svr4_32_decode_cmd(SCARG(uap, com), dir, &c, &num, &argsiz);
  108 
  109         uprintf("svr4_32_ioctl(%d, _IO%s(%c, %d, %d), %#x);\n", SCARG(uap, fd),
  110             dir, c, num, argsiz, SCARG(uap, data));
  111 #endif
  112         cmd = SCARG(uap, com);
  113 
  114         if ((fp = fd_getfile(SCARG(uap, fd))) == NULL)
  115                 return EBADF;
  116 
  117         if ((fp->f_flag & (FREAD | FWRITE)) == 0) {
  118                 fd_putfile(SCARG(uap, fd));
  119                 return EBADF;
  120         }
  121 
  122         switch (cmd & 0xff00) {
  123         case SVR4_tIOC:
  124                 fun = svr4_ttold_ioctl;
  125                 break;
  126 
  127         case SVR4_TIOC:
  128                 fun = svr4_32_term_ioctl;
  129                 break;
  130 
  131         case SVR4_STR:
  132                 fun = svr4_32_stream_ioctl;
  133                 break;
  134 
  135         case SVR4_FIOC:
  136                 fun = svr4_fil_ioctl;
  137                 break;
  138 
  139         case SVR4_SIOC:
  140                 fun = svr4_32_sock_ioctl;
  141                 break;
  142 
  143         case SVR4_XIOC:
  144                 /* We do not support those */
  145                 fd_putfile(SCARG(uap, fd));
  146                 return EINVAL;
  147 
  148         default:
  149                 DPRINTF(("Unimplemented ioctl %lx\n", cmd));
  150                 fd_putfile(SCARG(uap, fd));
  151                 return 0;       /* XXX: really ENOSYS */
  152         }
  153         error = (*fun)(fp, l, retval, SCARG(uap, fd), cmd, SCARG_P32(uap, data));
  154         fd_putfile(SCARG(uap, fd));
  155         return error;
  156 }

Cache object: 9614fc9f470e0f4a597c49bcafac7a32


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