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Sourcecode: parted version File versions

xfs.c

/*
    libparted - a library for manipulating disk partitions
    Copyright (C) 2001 Free Software Foundation, Inc.

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/

#include "config.h"

#include <parted/parted.h>
#include <parted/endian.h>

#if ENABLE_NLS
#  include <libintl.h>
#  define _(String) dgettext (PACKAGE, String)
#else
#  define _(String) (String)
#endif /* ENABLE_NLS */

#include <uuid/uuid.h>
#include "platform_defs.h"
#include "xfs_types.h"
#include "xfs_sb.h"

#include <string.h>

static PedGeometry*
xfs_probe (PedGeometry* geom)
{
      PedSector   block_size;
      PedSector   block_count;
      union {
            struct xfs_sb     sb;
            char        bytes [512];
      } buf;

      if (geom->length < XFS_SB_DADDR + 1)
            return NULL;
      if (!ped_geometry_read (geom, &buf, XFS_SB_DADDR, 1))
            return NULL;

      if (PED_LE32_TO_CPU (buf.sb.sb_magicnum) == XFS_SB_MAGIC) {
            block_size = PED_LE32_TO_CPU (buf.sb.sb_blocksize) / 512;
            block_count = PED_LE64_TO_CPU (buf.sb.sb_dblocks);

            return ped_geometry_new (geom->dev, geom->start,
                               block_size * block_count);
      }

      if (PED_BE32_TO_CPU (buf.sb.sb_magicnum) == XFS_SB_MAGIC) {
            block_size = PED_BE32_TO_CPU (buf.sb.sb_blocksize) / 512;
            block_count = PED_BE64_TO_CPU (buf.sb.sb_dblocks);

            return ped_geometry_new (geom->dev, geom->start,
                               block_size * block_count);
      }

      return NULL;
}

#ifndef DISCOVER_ONLY
static int
xfs_clobber (PedGeometry* geom)
{
      char  buf[512];

      memset (buf, 0, 512);
      return ped_geometry_write (geom, buf, XFS_SB_DADDR, 1);
}
#endif /* !DISCOVER_ONLY */

static PedFileSystemOps xfs_ops = {
      probe:            xfs_probe,
#ifndef DISCOVER_ONLY
      clobber:    xfs_clobber,
#else
      clobber:    NULL,
#endif
      open:       NULL,
      create:           NULL,
      close:            NULL,
      check:            NULL,
      copy:       NULL,
      resize:           NULL,
      get_create_constraint:  NULL,
      get_resize_constraint:  NULL,
      get_copy_constraint:    NULL
};

static PedFileSystemType xfs_type = {
      next: NULL,
      ops:  &xfs_ops,
      name: "xfs"
};

void
ped_file_system_xfs_init ()
{
      ped_file_system_type_register (&xfs_type);
}

void
ped_file_system_xfs_done ()
{
      ped_file_system_type_unregister (&xfs_type);
}


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