mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-20 11:11:24 +00:00
100 lines
3.2 KiB
C
100 lines
3.2 KiB
C
/*-
|
|
* Copyright (c) 2004-2005 Pawel Jakub Dawidek <pjd@FreeBSD.org>
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#ifndef _G_LABEL_H_
|
|
#define _G_LABEL_H_
|
|
|
|
#include <sys/endian.h>
|
|
|
|
#define G_LABEL_CLASS_NAME "LABEL"
|
|
|
|
#define G_LABEL_MAGIC "GEOM::LABEL"
|
|
/*
|
|
* Version history:
|
|
* 1 - Initial version number.
|
|
* 2 - Added md_provsize field to metadata.
|
|
*/
|
|
#define G_LABEL_VERSION 2
|
|
#define G_LABEL_DIR "label"
|
|
|
|
#ifdef _KERNEL
|
|
extern u_int g_label_debug;
|
|
|
|
#define G_LABEL_DEBUG(lvl, ...) do { \
|
|
if (g_label_debug >= (lvl)) { \
|
|
printf("GEOM_LABEL"); \
|
|
if (g_label_debug > 0) \
|
|
printf("[%u]", lvl); \
|
|
printf(": "); \
|
|
printf(__VA_ARGS__); \
|
|
printf("\n"); \
|
|
} \
|
|
} while (0)
|
|
|
|
typedef void g_label_taste_t (struct g_consumer *cp, char *label, size_t size);
|
|
|
|
struct g_label_desc {
|
|
g_label_taste_t *ld_taste;
|
|
char *ld_dir;
|
|
};
|
|
|
|
/* Supported labels. */
|
|
extern const struct g_label_desc g_label_ufs;
|
|
extern const struct g_label_desc g_label_iso9660;
|
|
extern const struct g_label_desc g_label_msdosfs;
|
|
extern const struct g_label_desc g_label_ext2fs;
|
|
extern const struct g_label_desc g_label_reiserfs;
|
|
extern const struct g_label_desc g_label_ntfs;
|
|
#endif /* _KERNEL */
|
|
|
|
struct g_label_metadata {
|
|
char md_magic[16]; /* Magic value. */
|
|
uint32_t md_version; /* Version number. */
|
|
char md_label[16]; /* Label. */
|
|
uint64_t md_provsize; /* Provider's size. */
|
|
};
|
|
static __inline void
|
|
label_metadata_encode(const struct g_label_metadata *md, u_char *data)
|
|
{
|
|
|
|
bcopy(md->md_magic, data, sizeof(md->md_magic));
|
|
le32enc(data + 16, md->md_version);
|
|
bcopy(md->md_label, data + 20, sizeof(md->md_label));
|
|
le64enc(data + 36, md->md_provsize);
|
|
}
|
|
static __inline void
|
|
label_metadata_decode(const u_char *data, struct g_label_metadata *md)
|
|
{
|
|
|
|
bcopy(data, md->md_magic, sizeof(md->md_magic));
|
|
md->md_version = le32dec(data + 16);
|
|
bcopy(data + 20, md->md_label, sizeof(md->md_label));
|
|
md->md_provsize = le64dec(data + 36);
|
|
}
|
|
#endif /* _G_LABEL_H_ */
|