compiler/clib/statfs.c

   1 /*
   2     Copyright © 2008, 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 "__errno.h"
  12 #include "__upath.h"
  13
  14 short getnixfilesystemtype(LONG id_DiskType);
  15
  16 /*****************************************************************************
  17
  18     NAME */
  19 #include <sys/mount.h>
  20
  21     int statfs(
  22
  23 /*  SYNOPSIS */
  24     const char *path,
  25     struct statfs *buf)
  26
  27 /*  FUNCTION
  28         Gets information about mounted filesystem.
  29
  30     INPUTS
  31         path - path to any file in the filesystem we want to know about
  32         buf - pointer to statfs structures where information about filesystem
  33             will be stored
  34
  35     RESULT
  36         Information about filesystem is stored in statfs structure
  37
  38     NOTES
  39
  40     EXAMPLE
  41
  42     BUGS
  43         f_flags, f_files, f_ffree and f_fsid.val are always set to 0
  44         f_mntfromname is set to an empty string
  45
  46     SEE ALSO
  47
  48     INTERNALS
  49
  50 ******************************************************************************/
  51 {
  52     BPTR lock;
  53     LONG ioerr = 0;
  54     struct InfoData data;
  55     char *apath;
  56
  57     if (path == NULL)
  58     {
  59         errno = EINVAL;
  60         return -1;
  61     }
  62
  63     apath = __path_u2a(path);
  64     if (!apath)
  65     {
  66         errno = EINVAL;
  67         return -1;
  68     }
  69
  70     /* Get filesystem data from lock */
  71     if(((lock = Lock(apath, SHARED_LOCK))))
  72     {
  73         if(Info(lock, &data))
  74         {
  75             /* Fill statfs structure */
  76             buf->f_type = getnixfilesystemtype(data.id_DiskType);
  77             buf->f_flags = 0;
  78             buf->f_fsize = data.id_BytesPerBlock;
  79             buf->f_bsize = data.id_BytesPerBlock;
  80             buf->f_blocks = data.id_NumBlocks;
  81             buf->f_bfree = data.id_NumBlocks - data.id_NumBlocksUsed;
  82             buf->f_bavail = data.id_NumBlocks - data.id_NumBlocksUsed;
  83             buf->f_files = 0;
  84             buf->f_ffree = 0;
  85             buf->f_fsid.val[0] = 0;
  86             buf->f_fsid.val[1] = 0;
  87             strncpy(buf->f_mntonname, __path_a2u(((struct DeviceList *)BADDR(data.id_VolumeNode))->dl_Name), MNAMELEN);
  88             buf->f_mntfromname[0] = '\0';
  89         }
  90         else
  91         {
  92             ioerr = IoErr();
  93         }
  94         UnLock(lock);
  95     }
  96     else
  97     {
  98         ioerr = IoErr();
  99     }
 100
 101     if(ioerr != 0) {
 102         errno = IoErr2errno(ioerr);
 103         return -1;
 104     }
 105
 106     return 0;
 107 }