95 lines
2.5 KiB
C
Executable File
95 lines
2.5 KiB
C
Executable File
/*
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reiserfs.c -- ReiserFS detection
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Copyright (C) 2001-2002, 2007, 2009-2014, 2019-2023 Free Software
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Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <config.h>
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#include <uuid/uuid.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <parted/parted.h>
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#include <parted/debug.h>
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#include <parted/endian.h>
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#if ENABLE_NLS
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# include <libintl.h>
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# define _(String) dgettext (PACKAGE, String)
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#else
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# define _(String) (String)
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#endif
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#include "reiserfs.h"
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static PedSector reiserfs_super_offset[] = { 128, 16, -1 };
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static PedFileSystemType* reiserfs_type;
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static PedGeometry *reiserfs_probe(PedGeometry *geom)
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{
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int i;
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PED_ASSERT(geom != NULL);
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reiserfs_super_block_t *sb = alloca (geom->dev->sector_size);
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for (i = 0; reiserfs_super_offset[i] != -1; i++) {
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if (reiserfs_super_offset[i] >= geom->length)
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continue;
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if (!ped_geometry_read (geom, sb, reiserfs_super_offset[i], 1))
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continue;
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if (strncmp(REISERFS_SIGNATURE, sb->s_magic,
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strlen(REISERFS_SIGNATURE)) == 0
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|| strncmp(REISER2FS_SIGNATURE, sb->s_magic,
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strlen(REISER2FS_SIGNATURE)) == 0
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|| strncmp(REISER3FS_SIGNATURE, sb->s_magic,
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strlen(REISER3FS_SIGNATURE)) == 0) {
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PedSector block_size;
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PedSector block_count;
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block_size = PED_LE16_TO_CPU(sb->s_blocksize)
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/ geom->dev->sector_size;
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block_count = PED_LE32_TO_CPU(sb->s_block_count);
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return ped_geometry_new(geom->dev, geom->start,
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block_size * block_count);
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}
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}
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return NULL;
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}
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static PedFileSystemOps reiserfs_simple_ops = {
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probe: reiserfs_probe,
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};
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static PedFileSystemType reiserfs_simple_type = {
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next: NULL,
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ops: &reiserfs_simple_ops,
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name: "reiserfs",
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};
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void ped_file_system_reiserfs_init()
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{
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reiserfs_type = &reiserfs_simple_type;
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ped_file_system_type_register(reiserfs_type);
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}
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void ped_file_system_reiserfs_done()
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{
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ped_file_system_type_unregister(reiserfs_type);
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}
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