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affs.c

/*
    affs.c -- parted suppoer for affs filesystems
    Copyright (C) 1998-2000 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/

#include "config.h"

#include <stdlib.h>
#include <string.h>
#include <parted/parted.h>
#include <parted/debug.h>
#include <parted/endian.h>

#include "amiga.h"
#include "affs.h"

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

static int
_affs_probe_root (uint32_t *block, int blocksize) {
      int i;
      uint32_t sum;

      if (PED_BE32_TO_CPU (block[0]) != 2) return 0;
      if (PED_BE32_TO_CPU (block[128*blocksize-1]) != 1) return 0;
      for (i = 0, sum = 0; i < 128*blocksize; i++)
            sum += PED_BE32_TO_CPU (block[i]);
      if (sum) return 0;
      return 1;
}

static PedGeometry*
_generic_affs_probe (PedGeometry* geom, uint32_t kind)
{
      uint32_t *block;
      int32_t i;
      PedSector root, len, pos;
      struct PartitionBlock * part;
      int blocksize = 1, reserved = 2, prealloc = 0;

      PED_ASSERT (geom != NULL, return NULL);
      PED_ASSERT (geom->dev != NULL, return NULL);

      /* Finds the blocksize, prealloc and reserved values of the partition block */
      if (!(part = ped_malloc (PED_SECTOR_SIZE*blocksize))) {
            ped_exception_throw(PED_EXCEPTION_ERROR, PED_EXCEPTION_CANCEL,
                  _("%s : Failed to allocate partition block\n"), __func__);
            goto error_part;
      }
      if (amiga_find_part(geom, part) != NULL) {
            prealloc = PED_BE32_TO_CPU (part->de_PreAlloc);
            reserved = PED_BE32_TO_CPU (part->de_Reserved);
            reserved = reserved == 0 ? 1 : reserved;
            blocksize = PED_BE32_TO_CPU (part->de_SizeBlock)
                  * PED_BE32_TO_CPU (part->de_SectorPerBlock) / 128;
      }
      ped_free (part);

      /* Test boot block */
      if (!(block = ped_malloc (PED_SECTOR_SIZE*blocksize))) {
            ped_exception_throw(PED_EXCEPTION_ERROR, PED_EXCEPTION_CANCEL,
                  _("%s : Failed to allocate block\n"), __func__);
            goto error_block;
      }
      if (!ped_device_read (geom->dev, block, geom->start, blocksize)) {
            ped_exception_throw(PED_EXCEPTION_ERROR, PED_EXCEPTION_CANCEL,
                  _("%s : Couldn't read boot block %llu\n"), __func__, geom->start);
            goto error;
      }
      if (PED_BE32_TO_CPU (block[0]) != kind) {
            goto error;
      }

      /* Find and test the root block */
      len = geom->length / blocksize - reserved;
      pos = (len - 1) / 2;
      root = geom->start + (pos + reserved) * blocksize;
      printf ("Pralloc = %d, Reserved = %d, blocksize = %d, root block at %llu\n",
            prealloc, reserved, blocksize, root);

      if (!ped_device_read (geom->dev, block, root, blocksize)) {
            ped_exception_throw(PED_EXCEPTION_ERROR, PED_EXCEPTION_CANCEL,
                  _("%s : Couldn't read root block %llu\n"), __func__, root);
            goto error;
      }
      if (_affs_probe_root(block, blocksize) == 1) {
            ped_free (block);
            return ped_geometry_duplicate (geom);
      }

error:
      ped_free (block);
error_block:
error_part:
      return NULL;
}
static PedGeometry*
_affs0_probe (PedGeometry* geom) {
      return _generic_affs_probe (geom, 0x444f5300);
}
static PedGeometry*
_affs1_probe (PedGeometry* geom) {
      return _generic_affs_probe (geom, 0x444f5301);
}
static PedGeometry*
_affs2_probe (PedGeometry* geom) {
      return _generic_affs_probe (geom, 0x444f5302);
}
static PedGeometry*
_affs3_probe (PedGeometry* geom) {
      return _generic_affs_probe (geom, 0x444f5303);
}
static PedGeometry*
_affs4_probe (PedGeometry* geom) {
      return _generic_affs_probe (geom, 0x444f5304);
}
static PedGeometry*
_affs5_probe (PedGeometry* geom) {
      return _generic_affs_probe (geom, 0x444f5305);
}
static PedGeometry*
_affs6_probe (PedGeometry* geom) {
      return _generic_affs_probe (geom, 0x444f5306);
}
static PedGeometry*
_affs7_probe (PedGeometry* geom) {
      return _generic_affs_probe (geom, 0x444f5307);
}
static PedGeometry*
_amufs_probe (PedGeometry* geom) {
      return _generic_affs_probe (geom, 0x6d754653);
}
static PedGeometry*
_amufs0_probe (PedGeometry* geom) {
      return _generic_affs_probe (geom, 0x6d754600);
}
static PedGeometry*
_amufs1_probe (PedGeometry* geom) {
      return _generic_affs_probe (geom, 0x6d754601);
}
static PedGeometry*
_amufs2_probe (PedGeometry* geom) {
      return _generic_affs_probe (geom, 0x6d754602);
}
static PedGeometry*
_amufs3_probe (PedGeometry* geom) {
      return _generic_affs_probe (geom, 0x6d754603);
}
static PedGeometry*
_amufs4_probe (PedGeometry* geom) {
      return _generic_affs_probe (geom, 0x6d754604);
}
static PedGeometry*
_amufs5_probe (PedGeometry* geom) {
      return _generic_affs_probe (geom, 0x6d754605);
}

static PedFileSystemOps _affs0_ops = {
      probe:            _affs0_probe,
      clobber:    NULL,
      open:       NULL,
      create:         NULL,
      close:            NULL,
      check:          NULL,
      resize:           NULL,
      copy:           NULL,
      get_create_constraint:  NULL,
      get_copy_constraint:    NULL,
      get_resize_constraint:  NULL
};
static PedFileSystemOps _affs1_ops = {
      probe:            _affs1_probe,
      clobber:    NULL,
      open:       NULL,
      create:         NULL,
      close:            NULL,
      check:          NULL,
      resize:           NULL,
      copy:           NULL,
      get_create_constraint:  NULL,
      get_copy_constraint:    NULL,
      get_resize_constraint:  NULL
};
static PedFileSystemOps _affs2_ops = {
      probe:            _affs2_probe,
      clobber:    NULL,
      open:       NULL,
      create:         NULL,
      close:            NULL,
      check:          NULL,
      resize:           NULL,
      copy:           NULL,
      get_create_constraint:  NULL,
      get_copy_constraint:    NULL,
      get_resize_constraint:  NULL
};
static PedFileSystemOps _affs3_ops = {
      probe:            _affs3_probe,
      clobber:    NULL,
      open:       NULL,
      create:         NULL,
      close:            NULL,
      check:          NULL,
      resize:           NULL,
      copy:           NULL,
      get_create_constraint:  NULL,
      get_copy_constraint:    NULL,
      get_resize_constraint:  NULL
};
static PedFileSystemOps _affs4_ops = {
      probe:            _affs4_probe,
      clobber:    NULL,
      open:       NULL,
      create:         NULL,
      close:            NULL,
      check:          NULL,
      resize:           NULL,
      copy:           NULL,
      get_create_constraint:  NULL,
      get_copy_constraint:    NULL,
      get_resize_constraint:  NULL
};
static PedFileSystemOps _affs5_ops = {
      probe:            _affs5_probe,
      clobber:    NULL,
      open:       NULL,
      create:         NULL,
      close:            NULL,
      check:          NULL,
      resize:           NULL,
      copy:           NULL,
      get_create_constraint:  NULL,
      get_copy_constraint:    NULL,
      get_resize_constraint:  NULL
};
static PedFileSystemOps _affs6_ops = {
      probe:            _affs6_probe,
      clobber:    NULL,
      open:       NULL,
      create:         NULL,
      close:            NULL,
      check:          NULL,
      resize:           NULL,
      copy:           NULL,
      get_create_constraint:  NULL,
      get_copy_constraint:    NULL,
      get_resize_constraint:  NULL
};
static PedFileSystemOps _affs7_ops = {
      probe:            _affs7_probe,
      clobber:    NULL,
      open:       NULL,
      create:         NULL,
      close:            NULL,
      check:          NULL,
      resize:           NULL,
      copy:           NULL,
      get_create_constraint:  NULL,
      get_copy_constraint:    NULL,
      get_resize_constraint:  NULL
};
static PedFileSystemOps _amufs_ops = {
      probe:            _amufs_probe,
      clobber:    NULL,
      open:       NULL,
      create:         NULL,
      close:            NULL,
      check:          NULL,
      resize:           NULL,
      copy:           NULL,
      get_create_constraint:  NULL,
      get_copy_constraint:    NULL,
      get_resize_constraint:  NULL
};
static PedFileSystemOps _amufs0_ops = {
      probe:            _amufs0_probe,
      clobber:    NULL,
      open:       NULL,
      create:         NULL,
      close:            NULL,
      check:          NULL,
      resize:           NULL,
      copy:           NULL,
      get_create_constraint:  NULL,
      get_copy_constraint:    NULL,
      get_resize_constraint:  NULL
};
static PedFileSystemOps _amufs1_ops = {
      probe:            _amufs1_probe,
      clobber:    NULL,
      open:       NULL,
      create:         NULL,
      close:            NULL,
      check:          NULL,
      resize:           NULL,
      copy:           NULL,
      get_create_constraint:  NULL,
      get_copy_constraint:    NULL,
      get_resize_constraint:  NULL
};
static PedFileSystemOps _amufs2_ops = {
      probe:            _amufs2_probe,
      clobber:    NULL,
      open:       NULL,
      create:         NULL,
      close:            NULL,
      check:          NULL,
      resize:           NULL,
      copy:           NULL,
      get_create_constraint:  NULL,
      get_copy_constraint:    NULL,
      get_resize_constraint:  NULL
};
static PedFileSystemOps _amufs3_ops = {
      probe:            _amufs3_probe,
      clobber:    NULL,
      open:       NULL,
      create:         NULL,
      close:            NULL,
      check:          NULL,
      resize:           NULL,
      copy:           NULL,
      get_create_constraint:  NULL,
      get_copy_constraint:    NULL,
      get_resize_constraint:  NULL
};
static PedFileSystemOps _amufs4_ops = {
      probe:            _amufs4_probe,
      clobber:    NULL,
      open:       NULL,
      create:         NULL,
      close:            NULL,
      check:          NULL,
      resize:           NULL,
      copy:           NULL,
      get_create_constraint:  NULL,
      get_copy_constraint:    NULL,
      get_resize_constraint:  NULL
};
static PedFileSystemOps _amufs5_ops = {
      probe:            _amufs5_probe,
      clobber:    NULL,
      open:       NULL,
      create:         NULL,
      close:            NULL,
      check:          NULL,
      resize:           NULL,
      copy:           NULL,
      get_create_constraint:  NULL,
      get_copy_constraint:    NULL,
      get_resize_constraint:  NULL
};

PedFileSystemType _affs0_type = {
       next:             NULL,
       ops:        &_affs0_ops,
       name:             "affs0"
};
PedFileSystemType _affs1_type = {
       next:             NULL,
       ops:        &_affs1_ops,
       name:             "affs1"
};
PedFileSystemType _affs2_type = {
       next:             NULL,
       ops:        &_affs2_ops,
       name:             "affs2"
};
PedFileSystemType _affs3_type = {
       next:             NULL,
       ops:        &_affs3_ops,
       name:             "affs3"
};
PedFileSystemType _affs4_type = {
       next:             NULL,
       ops:        &_affs4_ops,
       name:             "affs4"
};
PedFileSystemType _affs5_type = {
       next:             NULL,
       ops:        &_affs5_ops,
       name:             "affs5"
};
PedFileSystemType _affs6_type = {
       next:             NULL,
       ops:        &_affs6_ops,
       name:             "affs6"
};
PedFileSystemType _affs7_type = {
       next:             NULL,
       ops:        &_affs7_ops,
       name:             "affs7"
};
PedFileSystemType _amufs_type = {
       next:             NULL,
       ops:        &_amufs_ops,
       name:             "amufs"
};
PedFileSystemType _amufs0_type = {
       next:             NULL,
       ops:        &_amufs0_ops,
       name:             "amufs0"
};
PedFileSystemType _amufs1_type = {
       next:             NULL,
       ops:        &_amufs1_ops,
       name:             "amufs1"
};
PedFileSystemType _amufs2_type = {
       next:             NULL,
       ops:        &_amufs2_ops,
       name:             "amufs2"
};
PedFileSystemType _amufs3_type = {
       next:             NULL,
       ops:        &_amufs3_ops,
       name:             "amufs3"
};
PedFileSystemType _amufs4_type = {
       next:             NULL,
       ops:        &_amufs4_ops,
       name:             "amufs4"
};
PedFileSystemType _amufs5_type = {
       next:             NULL,
       ops:        &_amufs5_ops,
       name:             "amufs5"
};

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