/* * 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 2014 Garrett D'Amore * * Copyright 2009 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. * Copyright 2015 Nexenta Systems, Inc. All rights reserved. * Copyright 2016 Toomas Soome */ /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */ /* All Rights Reserved */ #ifndef _SYS_VTOC_H #define _SYS_VTOC_H #include #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] retunred 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 /* CacheFS partition (obsolete) */ /* Tags for EFI/GPT labels */ #define V_RESERVED 0x0b /* SMI reserved data */ #define V_SYSTEM 0x0c /* EFI/GPT system partition */ #define V_VXVM_PUB 0x0e /* VxVM public region */ #define V_VXVM_PRIV 0x0f /* VxVM private region */ #define V_BIOS_BOOT 0x18 /* Grub2 BIOS Boot partition */ /* NetBSD/mips defines this */ #define V_NETBSD_FFS 0xff /* FreeBSD tags: the high byte equals ELFOSABI_FREEBSD */ #define V_FREEBSD_BOOT 0x0900 #define V_FREEBSD_SWAP 0x0901 #define V_FREEBSD_UFS 0x0902 #define V_FREEBSD_VINUM 0x0903 #define V_FREEBSD_ZFS 0x0904 #define V_FREEBSD_NANDFS 0x0905 #define V_UNKNOWN 0xffff /* Unknown partition */ /* * 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 */ daddr_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 = (daddr_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] = (uint32_t)v.v_bootinfo[0]; \ v32.v_bootinfo[1] = (uint32_t)v.v_bootinfo[1]; \ v32.v_bootinfo[2] = (uint32_t)v.v_bootinfo[2]; \ v32.v_sanity = (uint32_t)v.v_sanity; \ v32.v_version = (uint32_t)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 = (uint32_t)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 */ 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 *); #ifdef __cplusplus } #endif #endif /* _SYS_VTOC_H */