usr.bin/fstat/ext2fs.c

   1 /*
   2  * Copyright (c) 2013 The DragonFly Project.  All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions
   6  * are met:
   7  *
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in
  12  *    the documentation and/or other materials provided with the
  13  *    distribution.
  14  * 3. Neither the name of The DragonFly Project nor the names of its
  15  *    contributors may be used to endorse or promote products derived
  16  *    from this software without specific, prior written permission.
  17  *
  18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  19  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  21  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
  22  * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  23  * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
  24  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  25  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  26  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  27  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
  28  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  29  * SUCH DAMAGE.
  30  */
  31
  32 #define _KERNEL_STRUCTURES
  33 #include <sys/vnode.h>
  34 #include <sys/mount.h>
  35 #include <vfs/ext2fs/inode.h>
  36 #define VTOI(vp)        ((struct inode *)(vp)->v_data)
  37 #undef _KERNEL_STRUCTURES
  38
  39 #include <stdio.h>
  40 #include <kvm.h>
  41
  42 #include "fstat.h"
  43
  44 int
  45 ext2fs_filestat(struct vnode *vp, struct filestat *fsp)
  46 {
  47         struct inode ino;
  48
  49         if (!kread(VTOI(vp), &ino, sizeof(ino))) {
  50                 dprintf(stderr, "can't read inode at %p for pid %d\n",
  51                     (void *)VTOI(vp), Pid);
  52                 return 0;
  53         }
  54         fsp->mode = ino.i_mode | mtrans(vp->v_type);
  55         fsp->rdev = fsp->fsid = fstat_dev2udev(ino.i_dev);
  56         fsp->size = ino.i_size;
  57         fsp->fileid = ino.i_number;
  58
  59         return 1;
  60 }