darwin_ioctl.c

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    1 /*      $NetBSD: darwin_ioctl.c,v 1.11 2008/06/24 11:18:15 ad Exp $ */
    2 
    3 /*-
    4  * Copyright (c) 2003, 2008 The NetBSD Foundation, Inc.
    5  * All rights reserved.
    6  *
    7  * This code is derived from software contributed to The NetBSD Foundation
    8  * by Emmanuel Dreyfus.
    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: darwin_ioctl.c,v 1.11 2008/06/24 11:18:15 ad Exp $");
   34 
   35 #include <sys/types.h>
   36 #include <sys/param.h>
   37 #include <sys/systm.h>
   38 #include <sys/mount.h>
   39 #include <sys/file.h>
   40 #include <sys/filedesc.h>
   41 #include <sys/dirent.h>
   42 #include <sys/vnode.h>
   43 #include <sys/proc.h>
   44 
   45 #include <sys/syscallargs.h>
   46 
   47 #include <compat/sys/signal.h>
   48 
   49 #include <compat/mach/mach_types.h>
   50 #include <compat/mach/mach_vm.h>
   51 
   52 #include <compat/darwin/darwin_audit.h>
   53 #include <compat/darwin/darwin_ioctl.h>
   54 #include <compat/darwin/darwin_syscallargs.h>
   55 
   56 static int vtype_to_dtype(int);
   57 
   58 int
   59 darwin_sys_ioctl(struct lwp *l, const struct darwin_sys_ioctl_args *uap, register_t *retval)
   60 {
   61         /* {
   62                 syscallarg(int) fd;
   63                 syscallarg(u_long) com;
   64                 syscallarg(void *) data;
   65         } */
   66         struct sys_ioctl_args cup;
   67         int error;
   68 
   69         switch (SCARG(uap, com)) {
   70         case DARWIN_FIODTYPE: { /* Get file d_type */
   71                 file_t *fp;
   72                 struct vnode *vp;
   73                 int *data = SCARG(uap, data);
   74                 int type;
   75 
   76                 /* fd_getvnode() will use the descriptor for us */
   77                 if ((error = fd_getvnode(SCARG(uap, fd), &fp)))
   78                         return (error);
   79 
   80                 vp = fp->f_data;
   81                 type = vtype_to_dtype(vp->v_type);
   82                 fd_putfile(SCARG(uap, fd));
   83 
   84                 error = copyout(&type, data, sizeof(*data));
   85 
   86                 return error;
   87                 break;
   88         }
   89 
   90         default:
   91                 /* Try native ioctl */
   92                 break;
   93         }
   94 
   95         SCARG(&cup, fd) = SCARG(uap, fd);
   96         SCARG(&cup, com) = SCARG(uap, com);
   97         SCARG(&cup, data) = SCARG(uap, data);
   98 
   99         error = sys_ioctl(l, &cup, retval);
  100 
  101         return error;
  102 }
  103 
  104 static int
  105 vtype_to_dtype(int dtype)
  106 {
  107         switch (dtype) {
  108         case VNON:
  109                 return DT_UNKNOWN;
  110                 break;
  111         case VREG:
  112                 return DT_REG;
  113                 break;
  114         case VDIR:
  115                 return DT_DIR;
  116                 break;
  117         case VBLK:
  118                 return DT_BLK;
  119                 break;
  120         case VCHR:
  121                 return DT_CHR;
  122                 break;
  123         case VLNK:
  124                 return DT_LNK;
  125                 break;
  126         case VSOCK:
  127                 return DT_SOCK;
  128                 break;
  129         case VFIFO:
  130                 return DT_FIFO;
  131                 break;
  132         case VBAD:
  133                 return DT_WHT;
  134                 break;
  135         default:
  136                 break;
  137         }
  138 
  139         return DT_UNKNOWN;
  140 }

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FreeBSD/Linux Kernel Cross Reference sys/compat/darwin/darwin_ioctl.c

FreeBSD/Linux Kernel Cross Reference
sys/compat/darwin/darwin_ioctl.c