emulated/statvfs.c

   1 /*
   2  * Copyright (c) 2003 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23
  24 /*
  25  * sys/statvfs.c
  26  */
  27 #include <sys/param.h>
  28 #include <sys/mount.h>
  29
  30 #include <sys/statvfs.h>        /* glue header */
  31
  32
  33 /* Internal common conversion function */
  34 static void
  35 cvt_statfs_to_statvfs(struct statfs *from, struct statvfs *to)
  36 {
  37         to->f_bsize     = from->f_iosize;
  38         to->f_frsize    = from->f_bsize;
  39         to->f_blocks    = from->f_blocks;
  40         to->f_bfree     = from->f_bfree;
  41         to->f_bavail    = from->f_bavail;
  42         to->f_files     = from->f_files;
  43         to->f_ffree     = from->f_ffree;
  44         to->f_favail    = from->f_ffree;
  45         to->f_fsid      = from->f_fsid.val[0];  /* XXX bad if non-root */
  46         to->f_namemax   = NAME_MAX;             /* XXX should be per FS */
  47
  48         /* Conver FS flags */
  49         to->f_flag      = 0;
  50         if( from->f_flags & MNT_RDONLY)
  51                 to->f_flag |= ST_RDONLY;
  52         if( from->f_flags & MNT_NOSUID)
  53                 to->f_flag |= ST_NOSUID;
  54
  55         return;
  56 }
  57
  58
  59 int
  60 fstatvfs(int fildes, struct statvfs *buf)
  61 {
  62         int     rv;
  63         struct statfs cvt;
  64
  65         if ((rv = fstatfs(fildes, &cvt)) == 0)
  66                 cvt_statfs_to_statvfs(&cvt, buf);
  67
  68         return(rv);
  69 }
  70
  71
  72 int
  73 statvfs(const char * __restrict path, struct statvfs * __restrict buf)
  74 {
  75         int     rv;
  76         struct statfs cvt;
  77
  78         if ((rv = statfs(path, &cvt)) == 0)
  79                 cvt_statfs_to_statvfs(&cvt, buf);
  80
  81         return(rv);
  82 }
  83
  84 /* EOF */