67 lines
1.9 KiB
C
67 lines
1.9 KiB
C
/*
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* volume_id - reads filesystem label and uuid
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*
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* Copyright (C) 2004 Kay Sievers <kay.sievers@vrfy.org>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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//config:config FEATURE_VOLUMEID_XFS
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//config: bool "xfs filesystem"
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//config: default y
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//config: depends on VOLUMEID
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//kbuild:lib-$(CONFIG_FEATURE_VOLUMEID_XFS) += xfs.o
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#include "volume_id_internal.h"
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struct xfs_super_block {
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uint8_t magic[4];
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uint32_t blocksize;
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uint64_t dblocks;
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uint64_t rblocks;
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uint32_t dummy1[2];
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uint8_t uuid[16];
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uint32_t dummy2[15];
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uint8_t fname[12];
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uint32_t dummy3[2];
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uint64_t icount;
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uint64_t ifree;
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uint64_t fdblocks;
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} PACKED;
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int FAST_FUNC volume_id_probe_xfs(struct volume_id *id /*,uint64_t off*/)
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{
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#define off ((uint64_t)0)
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struct xfs_super_block *xs;
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dbg("probing at offset 0x%llx", (unsigned long long) off);
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xs = volume_id_get_buffer(id, off, 0x200);
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if (xs == NULL)
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return -1;
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if (memcmp(xs->magic, "XFSB", 4) != 0)
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return -1;
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// volume_id_set_label_raw(id, xs->fname, 12);
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volume_id_set_label_string(id, xs->fname, 12);
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volume_id_set_uuid(id, xs->uuid, UUID_DCE);
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// volume_id_set_usage(id, VOLUME_ID_FILESYSTEM);
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IF_FEATURE_BLKID_TYPE(id->type = "xfs";)
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return 0;
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}
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