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112 lines
3.0 KiB
C
112 lines
3.0 KiB
C
/*
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* volume_id - reads partition 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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#ifndef _VOLUME_ID_H_
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#define _VOLUME_ID_H_
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#define VOLUME_ID_VERSION 25
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#define VOLUME_ID_LABEL_SIZE 64
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#define VOLUME_ID_UUID_SIZE 16
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#define VOLUME_ID_UUID_STRING_SIZE 37
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#define VOLUME_ID_FORMAT_SIZE 32
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#define VOLUME_ID_PATH_MAX 256
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#define VOLUME_ID_PARTITIONS_MAX 16
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enum volume_id_usage {
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VOLUME_ID_UNUSED,
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VOLUME_ID_UNPROBED,
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VOLUME_ID_OTHER,
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VOLUME_ID_FILESYSTEM,
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VOLUME_ID_PARTITIONTABLE,
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VOLUME_ID_RAID
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};
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enum volume_id_type {
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VOLUME_ID_ALL,
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VOLUME_ID_MSDOSPARTTABLE,
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VOLUME_ID_MSDOSEXTENDED,
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VOLUME_ID_SWAP,
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VOLUME_ID_EXT2,
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VOLUME_ID_EXT3,
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VOLUME_ID_REISERFS,
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VOLUME_ID_XFS,
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VOLUME_ID_JFS,
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VOLUME_ID_VFAT,
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VOLUME_ID_UDF,
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VOLUME_ID_ISO9660,
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VOLUME_ID_NTFS,
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VOLUME_ID_MACPARTMAP,
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VOLUME_ID_HFS,
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VOLUME_ID_HFSPLUS,
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VOLUME_ID_UFS,
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VOLUME_ID_LINUX_RAID,
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VOLUME_ID_LVM1,
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VOLUME_ID_LVM2
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};
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struct volume_id_partition {
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enum volume_id_usage usage_id;
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enum volume_id_type type_id;
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char *type;
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unsigned long long off;
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unsigned long long len;
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unsigned int partition_type_raw;
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};
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struct volume_id {
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unsigned char label_raw[VOLUME_ID_LABEL_SIZE];
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unsigned int label_raw_len;
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char label[VOLUME_ID_LABEL_SIZE+1];
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unsigned char uuid_raw[VOLUME_ID_UUID_SIZE];
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char uuid[VOLUME_ID_UUID_STRING_SIZE];
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enum volume_id_usage usage_id;
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enum volume_id_type type_id;
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char *type;
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char type_version[VOLUME_ID_FORMAT_SIZE];
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struct volume_id_partition *partitions;
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unsigned int partition_count;
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int fd;
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unsigned char *sbbuf;
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unsigned int sbbuf_len;
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unsigned char *seekbuf;
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unsigned long long seekbuf_off;
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unsigned int seekbuf_len;
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int fd_close;
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};
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/* open volume by already open file descriptor */
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extern struct volume_id *volume_id_open_fd(int fd);
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/* open volume by device node */
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extern struct volume_id *volume_id_open_node(const char *path);
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/* open volume by major/minor */
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extern struct volume_id *volume_id_open_dev_t(dev_t devt);
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/* probe volume for filesystem type and try to read label/uuid */
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extern int volume_id_probe(struct volume_id *id, enum volume_id_type type,
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unsigned long long off, unsigned long long size);
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/* free allocated device info */
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extern void volume_id_close(struct volume_id *id);
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#endif
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