diff options
Diffstat (limited to 'sys/contrib/openzfs/lib/libspl/include/sys/vtoc.h')
| -rw-r--r-- | sys/contrib/openzfs/lib/libspl/include/sys/vtoc.h | 350 |
1 files changed, 350 insertions, 0 deletions
diff --git a/sys/contrib/openzfs/lib/libspl/include/sys/vtoc.h b/sys/contrib/openzfs/lib/libspl/include/sys/vtoc.h new file mode 100644 index 000000000000..5d8448b628dc --- /dev/null +++ b/sys/contrib/openzfs/lib/libspl/include/sys/vtoc.h @@ -0,0 +1,350 @@ +/* + * 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 */ |