sys/compat/darwin/darwin_ioctl.c

   1 /*      $NetBSD: darwin_ioctl.c,v 1.9.2.2 2008/11/01 21:22:25 christos 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 1.9.2.2 2008/11/01 21:22:25 christos 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_types.h>
  53 #include <compat/darwin/darwin_audit.h>
  54 #include <compat/darwin/darwin_ioctl.h>
  55 #include <compat/darwin/darwin_syscallargs.h>
  56
  57 static int vtype_to_dtype(int);
  58
  59 int
  60 darwin_sys_ioctl(struct lwp *l, const struct darwin_sys_ioctl_args *uap, register_t *retval)
  61 {
  62         /* {
  63                 syscallarg(int) fd;
  64                 syscallarg(u_long) com;
  65                 syscallarg(void *) data;
  66         } */
  67         struct sys_ioctl_args cup;
  68         int error;
  69
  70         switch (SCARG(uap, com)) {
  71         case DARWIN_FIODTYPE: { /* Get file d_type */
  72                 file_t *fp;
  73                 struct vnode *vp;
  74                 int *data = SCARG(uap, data);
  75                 int type;
  76
  77                 /* fd_getvnode() will use the descriptor for us */
  78                 if ((error = fd_getvnode(SCARG(uap, fd), &fp)))
  79                         return (error);
  80
  81                 vp = fp->f_data;
  82                 type = vtype_to_dtype(vp->v_type);
  83                 fd_putfile(SCARG(uap, fd));
  84
  85                 error = copyout(&type, data, sizeof(*data));
  86
  87                 return error;
  88                 break;
  89         }
  90
  91         default:
  92                 /* Try native ioctl */
  93                 break;
  94         }
  95
  96         SCARG(&cup, fd) = SCARG(uap, fd);
  97         SCARG(&cup, com) = SCARG(uap, com);
  98         SCARG(&cup, data) = SCARG(uap, data);
  99
 100         error = sys_ioctl(l, &cup, retval);
 101
 102         return error;
 103 }
 104
 105 static int
 106 vtype_to_dtype(int dtype)
 107 {
 108         switch (dtype) {
 109         case VNON:
 110                 return DT_UNKNOWN;
 111                 break;
 112         case VREG:
 113                 return DT_REG;
 114                 break;
 115         case VDIR:
 116                 return DT_DIR;
 117                 break;
 118         case VBLK:
 119                 return DT_BLK;
 120                 break;
 121         case VCHR:
 122                 return DT_CHR;
 123                 break;
 124         case VLNK:
 125                 return DT_LNK;
 126                 break;
 127         case VSOCK:
 128                 return DT_SOCK;
 129                 break;
 130         case VFIFO:
 131                 return DT_FIFO;
 132                 break;
 133         case VBAD:
 134                 return DT_WHT;
 135                 break;
 136         default:
 137                 break;
 138         }
 139
 140         return DT_UNKNOWN;
 141 }