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mirror_zfs/lib/libspl/include/sys/vtoc.h
Andrea Gelmini 6673ef3f6f Fix typos in lib/ 
Reviewed-by: Ryan Moeller <ryan@ixsystems.com>
Reviewed-by: Richard Laager <rlaager@wiktel.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Andrea Gelmini <andrea.gelmini@gelma.net>
Closes #9237
2020-01-22 13:48:59 -08:00

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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2009 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/* All Rights Reserved */
#ifndef _SYS_VTOC_H
#define _SYS_VTOC_H
#include <sys/dklabel.h>
#ifdef __cplusplus
extern "C" {
#endif
/*
* Note: the VTOC is not implemented fully, nor in the manner
* that AT&T implements it. AT&T puts the vtoc structure
* into a sector, usually the second sector (pdsector is first).
*
* Sun incorporates the tag, flag, version, and volume vtoc fields into
* its Disk Label, which already has some vtoc-equivalent fields.
* Upon reading the vtoc with read_vtoc(), the following exceptions
* occur:
* v_bootinfo [all] returned as zero
* v_sanity returned as VTOC_SANE
* if Disk Label was sane
* v_sectorsz returned as 512
* v_reserved [all] returned as zero
* timestamp [all] returned as zero
*
* See dklabel.h, read_vtoc(), and write_vtoc().
*/
#define V_NUMPAR NDKMAP /* The number of partitions */
/* (from dkio.h) */
#define VTOC_SANE 0x600DDEEE /* Indicates a sane VTOC */
#define V_VERSION 0x01 /* layout version number */
#define V_EXTVERSION V_VERSION /* extvtoc layout version number */
/*
* Partition identification tags
*/
#define V_UNASSIGNED 0x00 /* unassigned partition */
#define V_BOOT 0x01 /* Boot partition */
#define V_ROOT 0x02 /* Root filesystem */
#define V_SWAP 0x03 /* Swap filesystem */
#define V_USR 0x04 /* Usr filesystem */
#define V_BACKUP 0x05 /* full disk */
#define V_STAND 0x06 /* Stand partition */
#define V_VAR 0x07 /* Var partition */
#define V_HOME 0x08 /* Home partition */
#define V_ALTSCTR 0x09 /* Alternate sector partition */
#define V_CACHE 0x0a /* Cache (cachefs) partition */
#define V_RESERVED 0x0b /* SMI reserved data */
/*
* Partition permission flags
*/
#define V_UNMNT 0x01 /* Unmountable partition */
#define V_RONLY 0x10 /* Read only */
/*
* error codes for reading & writing vtoc
*/
#define VT_ERROR (-2) /* errno supplies specific error */
#define VT_EIO (-3) /* I/O error accessing vtoc */
#define VT_EINVAL (-4) /* illegal value in vtoc or request */
#define VT_ENOTSUP (-5) /* VTOC op. not supported */
#define VT_ENOSPC (-6) /* requested space not found */
#define VT_EOVERFLOW (-7) /* VTOC op. data struct limited */
struct partition {
ushort_t p_tag; /* ID tag of partition */
ushort_t p_flag; /* permission flags */
uint64_t p_start; /* start sector no of partition */
long p_size; /* # of blocks in partition */
};
struct vtoc {
unsigned long v_bootinfo[3]; /* info needed by mboot (unsupported) */
unsigned long v_sanity; /* to verify vtoc sanity */
unsigned long v_version; /* layout version */
char v_volume[LEN_DKL_VVOL]; /* volume name */
ushort_t v_sectorsz; /* sector size in bytes */
ushort_t v_nparts; /* number of partitions */
unsigned long v_reserved[10]; /* free space */
struct partition v_part[V_NUMPAR]; /* partition headers */
time_t timestamp[V_NUMPAR]; /* partition timestamp (unsupported) */
char v_asciilabel[LEN_DKL_ASCII]; /* for compatibility */
};
struct extpartition {
ushort_t p_tag; /* ID tag of partition */
ushort_t p_flag; /* permission flags */
ushort_t p_pad[2];
diskaddr_t p_start; /* start sector no of partition */
diskaddr_t p_size; /* # of blocks in partition */
};
struct extvtoc {
uint64_t v_bootinfo[3]; /* info needed by mboot (unsupported) */
uint64_t v_sanity; /* to verify vtoc sanity */
uint64_t v_version; /* layout version */
char v_volume[LEN_DKL_VVOL]; /* volume name */
ushort_t v_sectorsz; /* sector size in bytes */
ushort_t v_nparts; /* number of partitions */
ushort_t pad[2];
uint64_t v_reserved[10];
struct extpartition v_part[V_NUMPAR]; /* partition headers */
uint64_t timestamp[V_NUMPAR]; /* partition timestamp (unsupported) */
char v_asciilabel[LEN_DKL_ASCII]; /* for compatibility */
};
#ifdef _KERNEL
#define extvtoctovtoc(extv, v) \
{ \
int i; \
v.v_bootinfo[0] = (unsigned long)extv.v_bootinfo[0]; \
v.v_bootinfo[1] = (unsigned long)extv.v_bootinfo[1]; \
v.v_bootinfo[2] = (unsigned long)extv.v_bootinfo[2]; \
v.v_sanity = (unsigned long)extv.v_sanity; \
v.v_version = (unsigned long)extv.v_version; \
bcopy(extv.v_volume, v.v_volume, LEN_DKL_VVOL); \
v.v_sectorsz = extv.v_sectorsz; \
v.v_nparts = extv.v_nparts; \
for (i = 0; i < 10; i++) \
v.v_reserved[i] = (unsigned long)extv.v_reserved[i]; \
for (i = 0; i < V_NUMPAR; i++) { \
v.v_part[i].p_tag = extv.v_part[i].p_tag; \
v.v_part[i].p_flag = extv.v_part[i].p_flag; \
v.v_part[i].p_start = (uint64_t)extv.v_part[i].p_start; \
v.v_part[i].p_size = (long)extv.v_part[i].p_size; \
v.timestamp[i] = (time_t)extv.timestamp[i]; \
} \
bcopy(extv.v_asciilabel, v.v_asciilabel, LEN_DKL_ASCII); \
}
#define vtoctoextvtoc(v, extv) \
{ \
int i; \
extv.v_bootinfo[0] = (uint64_t)v.v_bootinfo[0]; \
extv.v_bootinfo[1] = (uint64_t)v.v_bootinfo[1]; \
extv.v_bootinfo[2] = (uint64_t)v.v_bootinfo[2]; \
extv.v_sanity = (uint64_t)v.v_sanity; \
extv.v_version = (uint64_t)v.v_version; \
bcopy(v.v_volume, extv.v_volume, LEN_DKL_VVOL); \
extv.v_sectorsz = v.v_sectorsz; \
extv.v_nparts = v.v_nparts; \
for (i = 0; i < 10; i++) \
extv.v_reserved[i] = (uint64_t)v.v_reserved[i]; \
for (i = 0; i < V_NUMPAR; i++) { \
extv.v_part[i].p_tag = v.v_part[i].p_tag; \
extv.v_part[i].p_flag = v.v_part[i].p_flag; \
extv.v_part[i].p_start = \
(diskaddr_t)(unsigned long)v.v_part[i].p_start; \
extv.v_part[i].p_size = \
(diskaddr_t)(unsigned long)v.v_part[i].p_size; \
extv.timestamp[i] = (uint64_t)v.timestamp[i]; \
} \
bcopy(v.v_asciilabel, extv.v_asciilabel, LEN_DKL_ASCII); \
}
#endif /* _KERNEL */
#if defined(_SYSCALL32)
struct partition32 {
uint16_t p_tag; /* ID tag of partition */
uint16_t p_flag; /* permission flags */
daddr32_t p_start; /* start sector no of partition */
int32_t p_size; /* # of blocks in partition */
};
struct vtoc32 {
uint32_t v_bootinfo[3]; /* info needed by mboot (unsupported) */
uint32_t v_sanity; /* to verify vtoc sanity */
uint32_t v_version; /* layout version */
char v_volume[LEN_DKL_VVOL]; /* volume name */
uint16_t v_sectorsz; /* sector size in bytes */
uint16_t v_nparts; /* number of partitions */
uint32_t v_reserved[10]; /* free space */
struct partition32 v_part[V_NUMPAR]; /* partition headers */
time32_t timestamp[V_NUMPAR]; /* partition timestamp (unsupported) */
char v_asciilabel[LEN_DKL_ASCII]; /* for compatibility */
};
#define vtoc32tovtoc(v32, v) \
{ \
int i; \
v.v_bootinfo[0] = v32.v_bootinfo[0]; \
v.v_bootinfo[1] = v32.v_bootinfo[1]; \
v.v_bootinfo[2] = v32.v_bootinfo[2]; \
v.v_sanity = v32.v_sanity; \
v.v_version = v32.v_version; \
bcopy(v32.v_volume, v.v_volume, LEN_DKL_VVOL); \
v.v_sectorsz = v32.v_sectorsz; \
v.v_nparts = v32.v_nparts; \
v.v_version = v32.v_version; \
for (i = 0; i < 10; i++) \
v.v_reserved[i] = v32.v_reserved[i]; \
for (i = 0; i < V_NUMPAR; i++) { \
v.v_part[i].p_tag = (ushort_t)v32.v_part[i].p_tag; \
v.v_part[i].p_flag = (ushort_t)v32.v_part[i].p_flag; \
v.v_part[i].p_start = (unsigned)v32.v_part[i].p_start; \
v.v_part[i].p_size = (unsigned)v32.v_part[i].p_size; \
} \
for (i = 0; i < V_NUMPAR; i++) \
v.timestamp[i] = (time_t)v32.timestamp[i]; \
bcopy(v32.v_asciilabel, v.v_asciilabel, LEN_DKL_ASCII); \
}
#define vtoc32toextvtoc(v32, extv) \
{ \
int i; \
extv.v_bootinfo[0] = v32.v_bootinfo[0]; \
extv.v_bootinfo[1] = v32.v_bootinfo[1]; \
extv.v_bootinfo[2] = v32.v_bootinfo[2]; \
extv.v_sanity = v32.v_sanity; \
extv.v_version = v32.v_version; \
bcopy(v32.v_volume, extv.v_volume, LEN_DKL_VVOL); \
extv.v_sectorsz = v32.v_sectorsz; \
extv.v_nparts = v32.v_nparts; \
extv.v_version = v32.v_version; \
for (i = 0; i < 10; i++) \
extv.v_reserved[i] = v32.v_reserved[i]; \
for (i = 0; i < V_NUMPAR; i++) { \
extv.v_part[i].p_tag = (ushort_t)v32.v_part[i].p_tag; \
extv.v_part[i].p_flag = (ushort_t)v32.v_part[i].p_flag; \
extv.v_part[i].p_start = (diskaddr_t)v32.v_part[i].p_start; \
extv.v_part[i].p_size = (diskaddr_t)v32.v_part[i].p_size; \
extv.timestamp[i] = (time_t)v32.timestamp[i]; \
} \
bcopy(v32.v_asciilabel, extv.v_asciilabel, LEN_DKL_ASCII); \
}
#define vtoctovtoc32(v, v32) \
{ \
int i; \
v32.v_bootinfo[0] = v.v_bootinfo[0]; \
v32.v_bootinfo[1] = v.v_bootinfo[1]; \
v32.v_bootinfo[2] = v.v_bootinfo[2]; \
v32.v_sanity = v.v_sanity; \
v32.v_version = v.v_version; \
bcopy(v.v_volume, v32.v_volume, LEN_DKL_VVOL); \
v32.v_sectorsz = v.v_sectorsz; \
v32.v_nparts = v.v_nparts; \
v32.v_version = v.v_version; \
for (i = 0; i < 10; i++) \
v32.v_reserved[i] = v.v_reserved[i]; \
for (i = 0; i < V_NUMPAR; i++) { \
v32.v_part[i].p_tag = (ushort_t)v.v_part[i].p_tag; \
v32.v_part[i].p_flag = (ushort_t)v.v_part[i].p_flag; \
v32.v_part[i].p_start = (unsigned)v.v_part[i].p_start; \
v32.v_part[i].p_size = (unsigned)v.v_part[i].p_size; \
} \
for (i = 0; i < V_NUMPAR; i++) { \
if (v.timestamp[i] > TIME32_MAX) \
v32.timestamp[i] = TIME32_MAX; \
else \
v32.timestamp[i] = (time32_t)v.timestamp[i]; \
} \
bcopy(v.v_asciilabel, v32.v_asciilabel, LEN_DKL_ASCII); \
}
#define extvtoctovtoc32(extv, v32) \
{ \
int i; \
v32.v_bootinfo[0] = extv.v_bootinfo[0]; \
v32.v_bootinfo[1] = extv.v_bootinfo[1]; \
v32.v_bootinfo[2] = extv.v_bootinfo[2]; \
v32.v_sanity = extv.v_sanity; \
v32.v_version = extv.v_version; \
bcopy(extv.v_volume, v32.v_volume, LEN_DKL_VVOL); \
v32.v_sectorsz = extv.v_sectorsz; \
v32.v_nparts = extv.v_nparts; \
v32.v_version = extv.v_version; \
for (i = 0; i < 10; i++) \
v32.v_reserved[i] = extv.v_reserved[i]; \
for (i = 0; i < V_NUMPAR; i++) { \
v32.v_part[i].p_tag = (ushort_t)extv.v_part[i].p_tag; \
v32.v_part[i].p_flag = (ushort_t)extv.v_part[i].p_flag; \
v32.v_part[i].p_start = (unsigned)extv.v_part[i].p_start; \
v32.v_part[i].p_size = (unsigned)extv.v_part[i].p_size; \
} \
for (i = 0; i < V_NUMPAR; i++) { \
if (extv.timestamp[i] > TIME32_MAX) \
v32.timestamp[i] = TIME32_MAX; \
else \
v32.timestamp[i] = (time32_t)extv.timestamp[i]; \
} \
bcopy(extv.v_asciilabel, v32.v_asciilabel, LEN_DKL_ASCII); \
}
#endif /* _SYSCALL32 */
/*
* These defines are the mode parameter for the checksum routines.
*/
#define CK_CHECKSUM 0 /* check checksum */
#define CK_MAKESUM 1 /* generate checksum */
#if defined(__STDC__)
extern int read_vtoc(int, struct vtoc *);
extern int write_vtoc(int, struct vtoc *);
extern int read_extvtoc(int, struct extvtoc *);
extern int write_extvtoc(int, struct extvtoc *);
#else
extern int read_vtoc();
extern int write_vtoc();
extern int read_extvtoc();
extern int write_extvtoc();
#endif /* __STDC__ */
#ifdef __cplusplus
}
#endif
#endif /* _SYS_VTOC_H */
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