1185222Ssam/* $NetBSD: ffs_bswap.c,v 1.28 2004/05/25 14:54:59 hannken Exp $ */ 2185222Ssam 3185222Ssam/* 4185222Ssam * Copyright (c) 1998 Manuel Bouyer. 5185222Ssam * 6185222Ssam * Redistribution and use in source and binary forms, with or without 7185222Ssam * modification, are permitted provided that the following conditions 8185222Ssam * are met: 9185222Ssam * 1. Redistributions of source code must retain the above copyright 10185222Ssam * notice, this list of conditions and the following disclaimer. 11185222Ssam * 2. Redistributions in binary form must reproduce the above copyright 12185222Ssam * notice, this list of conditions and the following disclaimer in the 13185222Ssam * documentation and/or other materials provided with the distribution. 14185222Ssam * 3. All advertising materials mentioning features or use of this software 15185222Ssam * must display the following acknowledgement: 16185222Ssam * This product includes software developed by Manuel Bouyer. 17185222Ssam * 4. The name of the author may not be used to endorse or promote products 18185222Ssam * derived from this software without specific prior written permission. 19185222Ssam * 20185222Ssam * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 21185222Ssam * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 22185222Ssam * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 23185222Ssam * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 24185222Ssam * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 25185222Ssam * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26185222Ssam * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27185222Ssam * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28185222Ssam * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 29185222Ssam * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30185222Ssam * 31185222Ssam */ 32185222Ssam 33185222Ssam#include <sys/cdefs.h> 34186261Ssam__FBSDID("$FreeBSD$"); 35185222Ssam 36185222Ssam#include <sys/param.h> 37185222Ssam#if defined(_KERNEL) 38185222Ssam#include <sys/systm.h> 39185222Ssam#endif 40185222Ssam 41185222Ssam#include <ufs/ufs/dinode.h> 42186261Ssam#include "ffs/ufs_bswap.h" 43185222Ssam#include <ufs/ffs/fs.h> 44185222Ssam 45185222Ssam#if !defined(_KERNEL) 46185222Ssam#include <stddef.h> 47185222Ssam#include <stdio.h> 48185222Ssam#include <stdlib.h> 49185222Ssam#include <string.h> 50185222Ssam#define panic(x) printf("%s\n", (x)), abort() 51185222Ssam#endif 52185222Ssam 53186261Ssam#define fs_old_postbloff fs_spare5[0] 54186261Ssam#define fs_old_rotbloff fs_spare5[1] 55186261Ssam#define fs_old_postbl_start fs_maxbsize 56186261Ssam#define fs_old_headswitch fs_id[0] 57186261Ssam#define fs_old_trkseek fs_id[1] 58186261Ssam#define fs_old_csmask fs_spare1[0] 59186261Ssam#define fs_old_csshift fs_spare1[1] 60186261Ssam 61186261Ssam#define FS_42POSTBLFMT -1 /* 4.2BSD rotational table format */ 62186261Ssam#define FS_DYNAMICPOSTBLFMT 1 /* dynamic rotational table format */ 63186261Ssam 64186261Ssamvoid ffs_csum_swap(struct csum *o, struct csum *n, int size); 65186261Ssamvoid ffs_csumtotal_swap(struct csum_total *o, struct csum_total *n); 66186261Ssam 67185222Ssamvoid 68185222Ssamffs_sb_swap(struct fs *o, struct fs *n) 69185222Ssam{ 70185222Ssam int i; 71185222Ssam u_int32_t *o32, *n32; 72185222Ssam 73185222Ssam /* 74185222Ssam * In order to avoid a lot of lines, as the first N fields (52) 75185222Ssam * of the superblock up to fs_fmod are u_int32_t, we just loop 76185222Ssam * here to convert them. 77185222Ssam */ 78185222Ssam o32 = (u_int32_t *)o; 79185222Ssam n32 = (u_int32_t *)n; 80185222Ssam for (i = 0; i < offsetof(struct fs, fs_fmod) / sizeof(u_int32_t); i++) 81185222Ssam n32[i] = bswap32(o32[i]); 82185222Ssam 83185222Ssam n->fs_swuid = bswap64(o->fs_swuid); 84185222Ssam n->fs_cgrotor = bswap32(o->fs_cgrotor); /* Unused */ 85185222Ssam n->fs_old_cpc = bswap32(o->fs_old_cpc); 86185222Ssam 87185222Ssam /* These fields overlap with a possible location for the 88185222Ssam * historic FS_DYNAMICPOSTBLFMT postbl table, and with the 89185222Ssam * first half of the historic FS_42POSTBLFMT postbl table. 90185222Ssam */ 91185222Ssam n->fs_maxbsize = bswap32(o->fs_maxbsize); 92185222Ssam n->fs_sblockloc = bswap64(o->fs_sblockloc); 93185222Ssam ffs_csumtotal_swap(&o->fs_cstotal, &n->fs_cstotal); 94185222Ssam n->fs_time = bswap64(o->fs_time); 95185222Ssam n->fs_size = bswap64(o->fs_size); 96185222Ssam n->fs_dsize = bswap64(o->fs_dsize); 97185222Ssam n->fs_csaddr = bswap64(o->fs_csaddr); 98185222Ssam n->fs_pendingblocks = bswap64(o->fs_pendingblocks); 99185222Ssam n->fs_pendinginodes = bswap32(o->fs_pendinginodes); 100185222Ssam 101185222Ssam /* These fields overlap with the second half of the 102185222Ssam * historic FS_42POSTBLFMT postbl table 103185222Ssam */ 104185222Ssam for (i = 0; i < FSMAXSNAP; i++) 105185222Ssam n->fs_snapinum[i] = bswap32(o->fs_snapinum[i]); 106185222Ssam n->fs_avgfilesize = bswap32(o->fs_avgfilesize); 107185222Ssam n->fs_avgfpdir = bswap32(o->fs_avgfpdir); 108185222Ssam /* fs_sparecon[28] - ignore for now */ 109185222Ssam n->fs_flags = bswap32(o->fs_flags); 110185222Ssam n->fs_contigsumsize = bswap32(o->fs_contigsumsize); 111185222Ssam n->fs_maxsymlinklen = bswap32(o->fs_maxsymlinklen); 112185222Ssam n->fs_old_inodefmt = bswap32(o->fs_old_inodefmt); 113185222Ssam n->fs_maxfilesize = bswap64(o->fs_maxfilesize); 114185222Ssam n->fs_qbmask = bswap64(o->fs_qbmask); 115185222Ssam n->fs_qfmask = bswap64(o->fs_qfmask); 116185222Ssam n->fs_state = bswap32(o->fs_state); 117185222Ssam n->fs_old_postblformat = bswap32(o->fs_old_postblformat); 118185222Ssam n->fs_old_nrpos = bswap32(o->fs_old_nrpos); 119185222Ssam n->fs_old_postbloff = bswap32(o->fs_old_postbloff); 120185222Ssam n->fs_old_rotbloff = bswap32(o->fs_old_rotbloff); 121185222Ssam 122185222Ssam n->fs_magic = bswap32(o->fs_magic); 123185222Ssam} 124185222Ssam 125185222Ssamvoid 126185222Ssamffs_dinode1_swap(struct ufs1_dinode *o, struct ufs1_dinode *n) 127185222Ssam{ 128185222Ssam 129185222Ssam n->di_mode = bswap16(o->di_mode); 130185222Ssam n->di_nlink = bswap16(o->di_nlink); 131185222Ssam n->di_size = bswap64(o->di_size); 132185222Ssam n->di_atime = bswap32(o->di_atime); 133185222Ssam n->di_atimensec = bswap32(o->di_atimensec); 134185222Ssam n->di_mtime = bswap32(o->di_mtime); 135185222Ssam n->di_mtimensec = bswap32(o->di_mtimensec); 136185222Ssam n->di_ctime = bswap32(o->di_ctime); 137185222Ssam n->di_ctimensec = bswap32(o->di_ctimensec); 138185222Ssam memcpy(n->di_db, o->di_db, (NDADDR + NIADDR) * sizeof(u_int32_t)); 139185222Ssam n->di_flags = bswap32(o->di_flags); 140185222Ssam n->di_blocks = bswap32(o->di_blocks); 141185222Ssam n->di_gen = bswap32(o->di_gen); 142185222Ssam n->di_uid = bswap32(o->di_uid); 143185222Ssam n->di_gid = bswap32(o->di_gid); 144185222Ssam} 145185222Ssam 146185222Ssamvoid 147185222Ssamffs_dinode2_swap(struct ufs2_dinode *o, struct ufs2_dinode *n) 148185222Ssam{ 149185222Ssam n->di_mode = bswap16(o->di_mode); 150185222Ssam n->di_nlink = bswap16(o->di_nlink); 151185222Ssam n->di_uid = bswap32(o->di_uid); 152185222Ssam n->di_gid = bswap32(o->di_gid); 153185222Ssam n->di_blksize = bswap32(o->di_blksize); 154185222Ssam n->di_size = bswap64(o->di_size); 155185222Ssam n->di_blocks = bswap64(o->di_blocks); 156185222Ssam n->di_atime = bswap64(o->di_atime); 157185222Ssam n->di_atimensec = bswap32(o->di_atimensec); 158185222Ssam n->di_mtime = bswap64(o->di_mtime); 159185222Ssam n->di_mtimensec = bswap32(o->di_mtimensec); 160185222Ssam n->di_ctime = bswap64(o->di_ctime); 161185222Ssam n->di_ctimensec = bswap32(o->di_ctimensec); 162185222Ssam n->di_birthtime = bswap64(o->di_ctime); 163185222Ssam n->di_birthnsec = bswap32(o->di_ctimensec); 164185222Ssam n->di_gen = bswap32(o->di_gen); 165185222Ssam n->di_kernflags = bswap32(o->di_kernflags); 166185222Ssam n->di_flags = bswap32(o->di_flags); 167185222Ssam n->di_extsize = bswap32(o->di_extsize); 168185222Ssam memcpy(n->di_extb, o->di_extb, (NXADDR + NDADDR + NIADDR) * 8); 169185222Ssam} 170185222Ssam 171185222Ssamvoid 172185222Ssamffs_csum_swap(struct csum *o, struct csum *n, int size) 173185222Ssam{ 174185222Ssam int i; 175185222Ssam u_int32_t *oint, *nint; 176185222Ssam 177185222Ssam oint = (u_int32_t*)o; 178185222Ssam nint = (u_int32_t*)n; 179185222Ssam 180185222Ssam for (i = 0; i < size / sizeof(u_int32_t); i++) 181185222Ssam nint[i] = bswap32(oint[i]); 182185222Ssam} 183185222Ssam 184185222Ssamvoid 185185222Ssamffs_csumtotal_swap(struct csum_total *o, struct csum_total *n) 186185222Ssam{ 187185222Ssam n->cs_ndir = bswap64(o->cs_ndir); 188185222Ssam n->cs_nbfree = bswap64(o->cs_nbfree); 189185222Ssam n->cs_nifree = bswap64(o->cs_nifree); 190185222Ssam n->cs_nffree = bswap64(o->cs_nffree); 191185222Ssam} 192185222Ssam 193185222Ssam/* 194185222Ssam * Note that ffs_cg_swap may be called with o == n. 195185222Ssam */ 196185222Ssamvoid 197185222Ssamffs_cg_swap(struct cg *o, struct cg *n, struct fs *fs) 198185222Ssam{ 199185222Ssam int i; 200185222Ssam u_int32_t *n32, *o32; 201185222Ssam u_int16_t *n16, *o16; 202185222Ssam int32_t btotoff, boff, clustersumoff; 203185222Ssam 204185222Ssam n->cg_firstfield = bswap32(o->cg_firstfield); 205185222Ssam n->cg_magic = bswap32(o->cg_magic); 206185222Ssam n->cg_old_time = bswap32(o->cg_old_time); 207185222Ssam n->cg_cgx = bswap32(o->cg_cgx); 208185222Ssam n->cg_old_ncyl = bswap16(o->cg_old_ncyl); 209185222Ssam n->cg_old_niblk = bswap16(o->cg_old_niblk); 210185222Ssam n->cg_ndblk = bswap32(o->cg_ndblk); 211185222Ssam n->cg_cs.cs_ndir = bswap32(o->cg_cs.cs_ndir); 212185222Ssam n->cg_cs.cs_nbfree = bswap32(o->cg_cs.cs_nbfree); 213185222Ssam n->cg_cs.cs_nifree = bswap32(o->cg_cs.cs_nifree); 214185222Ssam n->cg_cs.cs_nffree = bswap32(o->cg_cs.cs_nffree); 215185222Ssam n->cg_rotor = bswap32(o->cg_rotor); 216185222Ssam n->cg_frotor = bswap32(o->cg_frotor); 217185222Ssam n->cg_irotor = bswap32(o->cg_irotor); 218185222Ssam for (i = 0; i < MAXFRAG; i++) 219185222Ssam n->cg_frsum[i] = bswap32(o->cg_frsum[i]); 220185222Ssam 221186261Ssam n->cg_old_btotoff = bswap32(o->cg_old_btotoff); 222186261Ssam n->cg_old_boff = bswap32(o->cg_old_boff); 223186261Ssam n->cg_iusedoff = bswap32(o->cg_iusedoff); 224186261Ssam n->cg_freeoff = bswap32(o->cg_freeoff); 225186261Ssam n->cg_nextfreeoff = bswap32(o->cg_nextfreeoff); 226186261Ssam n->cg_clustersumoff = bswap32(o->cg_clustersumoff); 227186261Ssam n->cg_clusteroff = bswap32(o->cg_clusteroff); 228186261Ssam n->cg_nclusterblks = bswap32(o->cg_nclusterblks); 229186261Ssam n->cg_niblk = bswap32(o->cg_niblk); 230186261Ssam n->cg_initediblk = bswap32(o->cg_initediblk); 231186261Ssam n->cg_time = bswap64(o->cg_time); 232185222Ssam 233186261Ssam if (fs->fs_magic == FS_UFS2_MAGIC) 234186261Ssam return; 235185222Ssam 236186261Ssam if (n->cg_magic == CG_MAGIC) { 237186261Ssam btotoff = n->cg_old_btotoff; 238186261Ssam boff = n->cg_old_boff; 239186261Ssam clustersumoff = n->cg_clustersumoff; 240186261Ssam } else { 241186261Ssam btotoff = bswap32(n->cg_old_btotoff); 242186261Ssam boff = bswap32(n->cg_old_boff); 243186261Ssam clustersumoff = bswap32(n->cg_clustersumoff); 244186261Ssam } 245186261Ssam n32 = (u_int32_t *)((u_int8_t *)n + btotoff); 246186261Ssam o32 = (u_int32_t *)((u_int8_t *)o + btotoff); 247186261Ssam n16 = (u_int16_t *)((u_int8_t *)n + boff); 248186261Ssam o16 = (u_int16_t *)((u_int8_t *)o + boff); 249185222Ssam 250186261Ssam for (i = 0; i < fs->fs_old_cpg; i++) 251186261Ssam n32[i] = bswap32(o32[i]); 252186261Ssam 253186261Ssam for (i = 0; i < fs->fs_old_cpg * fs->fs_old_nrpos; i++) 254186261Ssam n16[i] = bswap16(o16[i]); 255185222Ssam 256186261Ssam n32 = (u_int32_t *)((u_int8_t *)n + clustersumoff); 257186261Ssam o32 = (u_int32_t *)((u_int8_t *)o + clustersumoff); 258186261Ssam for (i = 1; i < fs->fs_contigsumsize + 1; i++) 259186261Ssam n32[i] = bswap32(o32[i]); 260185222Ssam} 261