compiler/posixc/statfs.c

   1 /*
   2     Copyright © 2008-2012, The AROS Development Team. All rights reserved.
   3     $Id$
   4 */
   5
   6 #include <string.h>
   7 #include <errno.h>
   8 #include <sys/mount.h>
   9 #include <proto/dos.h>
  10 #include <dos/dos.h>
  11 #include "__upath.h"
  12
  13 short getnixfilesystemtype(LONG id_DiskType);
  14
  15 /*****************************************************************************
  16
  17     NAME */
  18 #include <sys/mount.h>
  19
  20     int statfs(
  21
  22 /*  SYNOPSIS */
  23     const char *path,
  24     struct statfs *buf)
  25
  26 /*  FUNCTION
  27         Gets information about mounted filesystem.
  28
  29     INPUTS
  30         path - path to any file in the filesystem we want to know about
  31         buf - pointer to statfs structures where information about filesystem
  32             will be stored
  33
  34     RESULT
  35         Information about filesystem is stored in statfs structure
  36
  37     NOTES
  38
  39     EXAMPLE
  40
  41     BUGS
  42         f_flags, f_files, f_ffree and f_fsid.val are always set to 0
  43         f_mntfromname is set to an empty string
  44
  45     SEE ALSO
  46
  47     INTERNALS
  48
  49 ******************************************************************************/
  50 {
  51     BPTR lock;
  52     LONG ioerr = 0;
  53     struct InfoData data;
  54     const char *apath;
  55
  56     if (path == NULL)
  57     {
  58         errno = EINVAL;
  59         return -1;
  60     }
  61
  62     apath = __path_u2a(path);
  63     if (!apath)
  64     {
  65         errno = EINVAL;
  66         return -1;
  67     }
  68
  69     /* Get filesystem data from lock */
  70     if(((lock = Lock(apath, SHARED_LOCK))))
  71     {
  72         if(Info(lock, &data))
  73         {
  74             /* Fill statfs structure */
  75             buf->f_type = getnixfilesystemtype(data.id_DiskType);
  76             buf->f_flags = 0;
  77             buf->f_fsize = data.id_BytesPerBlock;
  78             buf->f_bsize = data.id_BytesPerBlock;
  79             buf->f_blocks = data.id_NumBlocks;
  80             buf->f_bfree = data.id_NumBlocks - data.id_NumBlocksUsed;
  81             buf->f_bavail = data.id_NumBlocks - data.id_NumBlocksUsed;
  82             buf->f_files = 0;
  83             buf->f_ffree = 0;
  84             buf->f_fsid.val[0] = 0;
  85             buf->f_fsid.val[1] = 0;
  86             strncpy(buf->f_mntonname, __path_a2u(AROS_BSTR_ADDR(((struct DeviceList *)BADDR(data.id_VolumeNode))->dl_Name)), MNAMELEN);
  87             buf->f_mntfromname[0] = '\0';
  88         }
  89         else
  90         {
  91             ioerr = IoErr();
  92         }
  93         UnLock(lock);
  94     }
  95     else
  96     {
  97         ioerr = IoErr();
  98     }
  99
 100     if(ioerr != 0) {
 101         errno = __stdc_ioerr2errno(ioerr);
 102         return -1;
 103     }
 104
 105     return 0;
 106 }