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/*
* volume_id - reads partition label and uuid
*
* Copyright (C) 2004 Kay Sievers <kay.sievers@vrfy.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef _VOLUME_ID_H_
#define _VOLUME_ID_H_
#define VOLUME_ID_VERSION 002
#define VOLUME_ID_LABEL_SIZE 32
#define VOLUME_ID_UUID_SIZE 16
#define VOLUME_ID_UUID_STRING_SIZE 37
#define VOLUME_ID_PATH_MAX 255
enum filesystem_type {
ALL,
EXT2,
EXT3,
REISER,
XFS,
JFS,
MSDOS,
VFAT,
UDF,
ISO9660,
NTFS,
SWAP
};
struct volume_id {
char label_raw[VOLUME_ID_LABEL_SIZE];
size_t label_raw_len;
char label_string[VOLUME_ID_LABEL_SIZE+1];
unsigned char uuid[VOLUME_ID_UUID_SIZE];
char uuid_string[VOLUME_ID_UUID_STRING_SIZE];
enum filesystem_type fs_type;
char *fs_name;
int fd;
char *sbbuf;
size_t sbbuf_len;
char *seekbuf;
size_t seekbuf_off;
size_t seekbuf_len;
int fd_close;
};
/* open volume by already open file descriptor */
extern struct volume_id *volume_id_open_fd(int fd);
/* open volume by device node */
extern struct volume_id *volume_id_open_node(const char *path);
/* open volume by major/minor */
extern struct volume_id *volume_id_open_dev_t(dev_t devt);
/* probe volume for filesystem type and try to read label/uuid */
extern int volume_id_probe(struct volume_id *id, enum filesystem_type fs_type);
/* free allocated device info */
extern void volume_id_close(struct volume_id *id);
#endif
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