1185222Ssam/* $NetBSD: ffs_bswap.c,v 1.28 2004/05/25 14:54:59 hannken Exp $ */ 2185222Ssam 3330449Seadler/*- 4330449Seadler * SPDX-License-Identifier: BSD-2-Clause-NetBSD 5330449Seadler * 6185222Ssam * Copyright (c) 1998 Manuel Bouyer. 7185222Ssam * 8185222Ssam * Redistribution and use in source and binary forms, with or without 9185222Ssam * modification, are permitted provided that the following conditions 10185222Ssam * are met: 11185222Ssam * 1. Redistributions of source code must retain the above copyright 12185222Ssam * notice, this list of conditions and the following disclaimer. 13185222Ssam * 2. Redistributions in binary form must reproduce the above copyright 14185222Ssam * notice, this list of conditions and the following disclaimer in the 15185222Ssam * documentation and/or other materials provided with the distribution. 16185222Ssam * 3. All advertising materials mentioning features or use of this software 17185222Ssam * must display the following acknowledgement: 18185222Ssam * This product includes software developed by Manuel Bouyer. 19185222Ssam * 4. The name of the author may not be used to endorse or promote products 20185222Ssam * derived from this software without specific prior written permission. 21185222Ssam * 22185222Ssam * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 23185222Ssam * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24185222Ssam * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25185222Ssam * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 26185222Ssam * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 27185222Ssam * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28185222Ssam * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29185222Ssam * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30185222Ssam * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 31185222Ssam * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32185222Ssam * 33185222Ssam */ 34185222Ssam 35185222Ssam#include <sys/cdefs.h> 36186261Ssam__FBSDID("$FreeBSD: stable/11/usr.sbin/makefs/ffs/ffs_bswap.c 332980 2018-04-25 01:35:06Z benno $"); 37185222Ssam 38185222Ssam#include <sys/param.h> 39185222Ssam#if defined(_KERNEL) 40185222Ssam#include <sys/systm.h> 41185222Ssam#endif 42185222Ssam 43185222Ssam#if !defined(_KERNEL) 44185222Ssam#include <stddef.h> 45332980Sbenno#include <stdint.h> 46185222Ssam#include <stdio.h> 47185222Ssam#include <stdlib.h> 48185222Ssam#include <string.h> 49185222Ssam#define panic(x) printf("%s\n", (x)), abort() 50185222Ssam#endif 51185222Ssam 52332980Sbenno#include <ufs/ufs/dinode.h> 53332980Sbenno#include "ffs/ufs_bswap.h" 54332980Sbenno#include <ufs/ffs/fs.h> 55332980Sbenno 56186261Ssam#define fs_old_postbloff fs_spare5[0] 57186261Ssam#define fs_old_rotbloff fs_spare5[1] 58186261Ssam#define fs_old_postbl_start fs_maxbsize 59186261Ssam#define fs_old_headswitch fs_id[0] 60186261Ssam#define fs_old_trkseek fs_id[1] 61186261Ssam#define fs_old_csmask fs_spare1[0] 62186261Ssam#define fs_old_csshift fs_spare1[1] 63186261Ssam 64186261Ssam#define FS_42POSTBLFMT -1 /* 4.2BSD rotational table format */ 65186261Ssam#define FS_DYNAMICPOSTBLFMT 1 /* dynamic rotational table format */ 66186261Ssam 67186261Ssamvoid ffs_csum_swap(struct csum *o, struct csum *n, int size); 68186261Ssamvoid ffs_csumtotal_swap(struct csum_total *o, struct csum_total *n); 69186261Ssam 70185222Ssamvoid 71185222Ssamffs_sb_swap(struct fs *o, struct fs *n) 72185222Ssam{ 73290268Sngie size_t i; 74185222Ssam u_int32_t *o32, *n32; 75185222Ssam 76185222Ssam /* 77185222Ssam * In order to avoid a lot of lines, as the first N fields (52) 78185222Ssam * of the superblock up to fs_fmod are u_int32_t, we just loop 79185222Ssam * here to convert them. 80185222Ssam */ 81185222Ssam o32 = (u_int32_t *)o; 82185222Ssam n32 = (u_int32_t *)n; 83185222Ssam for (i = 0; i < offsetof(struct fs, fs_fmod) / sizeof(u_int32_t); i++) 84185222Ssam n32[i] = bswap32(o32[i]); 85185222Ssam 86185222Ssam n->fs_swuid = bswap64(o->fs_swuid); 87185222Ssam n->fs_cgrotor = bswap32(o->fs_cgrotor); /* Unused */ 88185222Ssam n->fs_old_cpc = bswap32(o->fs_old_cpc); 89185222Ssam 90185222Ssam /* These fields overlap with a possible location for the 91185222Ssam * historic FS_DYNAMICPOSTBLFMT postbl table, and with the 92185222Ssam * first half of the historic FS_42POSTBLFMT postbl table. 93185222Ssam */ 94185222Ssam n->fs_maxbsize = bswap32(o->fs_maxbsize); 95185222Ssam n->fs_sblockloc = bswap64(o->fs_sblockloc); 96185222Ssam ffs_csumtotal_swap(&o->fs_cstotal, &n->fs_cstotal); 97185222Ssam n->fs_time = bswap64(o->fs_time); 98185222Ssam n->fs_size = bswap64(o->fs_size); 99185222Ssam n->fs_dsize = bswap64(o->fs_dsize); 100185222Ssam n->fs_csaddr = bswap64(o->fs_csaddr); 101185222Ssam n->fs_pendingblocks = bswap64(o->fs_pendingblocks); 102185222Ssam n->fs_pendinginodes = bswap32(o->fs_pendinginodes); 103290268Sngie 104185222Ssam /* These fields overlap with the second half of the 105185222Ssam * historic FS_42POSTBLFMT postbl table 106185222Ssam */ 107185222Ssam for (i = 0; i < FSMAXSNAP; i++) 108185222Ssam n->fs_snapinum[i] = bswap32(o->fs_snapinum[i]); 109185222Ssam n->fs_avgfilesize = bswap32(o->fs_avgfilesize); 110185222Ssam n->fs_avgfpdir = bswap32(o->fs_avgfpdir); 111185222Ssam /* fs_sparecon[28] - ignore for now */ 112185222Ssam n->fs_flags = bswap32(o->fs_flags); 113185222Ssam n->fs_contigsumsize = bswap32(o->fs_contigsumsize); 114185222Ssam n->fs_maxsymlinklen = bswap32(o->fs_maxsymlinklen); 115185222Ssam n->fs_old_inodefmt = bswap32(o->fs_old_inodefmt); 116185222Ssam n->fs_maxfilesize = bswap64(o->fs_maxfilesize); 117185222Ssam n->fs_qbmask = bswap64(o->fs_qbmask); 118185222Ssam n->fs_qfmask = bswap64(o->fs_qfmask); 119185222Ssam n->fs_state = bswap32(o->fs_state); 120185222Ssam n->fs_old_postblformat = bswap32(o->fs_old_postblformat); 121185222Ssam n->fs_old_nrpos = bswap32(o->fs_old_nrpos); 122185222Ssam n->fs_old_postbloff = bswap32(o->fs_old_postbloff); 123185222Ssam n->fs_old_rotbloff = bswap32(o->fs_old_rotbloff); 124185222Ssam 125185222Ssam n->fs_magic = bswap32(o->fs_magic); 126185222Ssam} 127185222Ssam 128185222Ssamvoid 129185222Ssamffs_dinode1_swap(struct ufs1_dinode *o, struct ufs1_dinode *n) 130185222Ssam{ 131185222Ssam 132185222Ssam n->di_mode = bswap16(o->di_mode); 133185222Ssam n->di_nlink = bswap16(o->di_nlink); 134185222Ssam n->di_size = bswap64(o->di_size); 135185222Ssam n->di_atime = bswap32(o->di_atime); 136185222Ssam n->di_atimensec = bswap32(o->di_atimensec); 137185222Ssam n->di_mtime = bswap32(o->di_mtime); 138185222Ssam n->di_mtimensec = bswap32(o->di_mtimensec); 139185222Ssam n->di_ctime = bswap32(o->di_ctime); 140185222Ssam n->di_ctimensec = bswap32(o->di_ctimensec); 141299461Scem memcpy(n->di_db, o->di_db, sizeof(n->di_db)); 142299461Scem memcpy(n->di_ib, o->di_ib, sizeof(n->di_ib)); 143185222Ssam n->di_flags = bswap32(o->di_flags); 144185222Ssam n->di_blocks = bswap32(o->di_blocks); 145185222Ssam n->di_gen = bswap32(o->di_gen); 146185222Ssam n->di_uid = bswap32(o->di_uid); 147185222Ssam n->di_gid = bswap32(o->di_gid); 148185222Ssam} 149185222Ssam 150185222Ssamvoid 151185222Ssamffs_dinode2_swap(struct ufs2_dinode *o, struct ufs2_dinode *n) 152185222Ssam{ 153185222Ssam n->di_mode = bswap16(o->di_mode); 154185222Ssam n->di_nlink = bswap16(o->di_nlink); 155185222Ssam n->di_uid = bswap32(o->di_uid); 156185222Ssam n->di_gid = bswap32(o->di_gid); 157185222Ssam n->di_blksize = bswap32(o->di_blksize); 158185222Ssam n->di_size = bswap64(o->di_size); 159185222Ssam n->di_blocks = bswap64(o->di_blocks); 160185222Ssam n->di_atime = bswap64(o->di_atime); 161185222Ssam n->di_atimensec = bswap32(o->di_atimensec); 162185222Ssam n->di_mtime = bswap64(o->di_mtime); 163185222Ssam n->di_mtimensec = bswap32(o->di_mtimensec); 164185222Ssam n->di_ctime = bswap64(o->di_ctime); 165185222Ssam n->di_ctimensec = bswap32(o->di_ctimensec); 166185222Ssam n->di_birthtime = bswap64(o->di_ctime); 167185222Ssam n->di_birthnsec = bswap32(o->di_ctimensec); 168185222Ssam n->di_gen = bswap32(o->di_gen); 169185222Ssam n->di_kernflags = bswap32(o->di_kernflags); 170185222Ssam n->di_flags = bswap32(o->di_flags); 171185222Ssam n->di_extsize = bswap32(o->di_extsize); 172299461Scem memcpy(n->di_extb, o->di_extb, sizeof(n->di_extb)); 173299461Scem memcpy(n->di_db, o->di_db, sizeof(n->di_db)); 174299461Scem memcpy(n->di_ib, o->di_ib, sizeof(n->di_ib)); 175185222Ssam} 176185222Ssam 177185222Ssamvoid 178185222Ssamffs_csum_swap(struct csum *o, struct csum *n, int size) 179185222Ssam{ 180290268Sngie size_t i; 181185222Ssam u_int32_t *oint, *nint; 182290268Sngie 183185222Ssam oint = (u_int32_t*)o; 184185222Ssam nint = (u_int32_t*)n; 185185222Ssam 186185222Ssam for (i = 0; i < size / sizeof(u_int32_t); i++) 187185222Ssam nint[i] = bswap32(oint[i]); 188185222Ssam} 189185222Ssam 190185222Ssamvoid 191185222Ssamffs_csumtotal_swap(struct csum_total *o, struct csum_total *n) 192185222Ssam{ 193185222Ssam n->cs_ndir = bswap64(o->cs_ndir); 194185222Ssam n->cs_nbfree = bswap64(o->cs_nbfree); 195185222Ssam n->cs_nifree = bswap64(o->cs_nifree); 196185222Ssam n->cs_nffree = bswap64(o->cs_nffree); 197185222Ssam} 198185222Ssam 199185222Ssam/* 200185222Ssam * Note that ffs_cg_swap may be called with o == n. 201185222Ssam */ 202185222Ssamvoid 203185222Ssamffs_cg_swap(struct cg *o, struct cg *n, struct fs *fs) 204185222Ssam{ 205185222Ssam int i; 206185222Ssam u_int32_t *n32, *o32; 207185222Ssam u_int16_t *n16, *o16; 208185222Ssam int32_t btotoff, boff, clustersumoff; 209185222Ssam 210185222Ssam n->cg_firstfield = bswap32(o->cg_firstfield); 211185222Ssam n->cg_magic = bswap32(o->cg_magic); 212185222Ssam n->cg_old_time = bswap32(o->cg_old_time); 213185222Ssam n->cg_cgx = bswap32(o->cg_cgx); 214185222Ssam n->cg_old_ncyl = bswap16(o->cg_old_ncyl); 215185222Ssam n->cg_old_niblk = bswap16(o->cg_old_niblk); 216185222Ssam n->cg_ndblk = bswap32(o->cg_ndblk); 217185222Ssam n->cg_cs.cs_ndir = bswap32(o->cg_cs.cs_ndir); 218185222Ssam n->cg_cs.cs_nbfree = bswap32(o->cg_cs.cs_nbfree); 219185222Ssam n->cg_cs.cs_nifree = bswap32(o->cg_cs.cs_nifree); 220185222Ssam n->cg_cs.cs_nffree = bswap32(o->cg_cs.cs_nffree); 221185222Ssam n->cg_rotor = bswap32(o->cg_rotor); 222185222Ssam n->cg_frotor = bswap32(o->cg_frotor); 223185222Ssam n->cg_irotor = bswap32(o->cg_irotor); 224185222Ssam for (i = 0; i < MAXFRAG; i++) 225185222Ssam n->cg_frsum[i] = bswap32(o->cg_frsum[i]); 226185222Ssam 227186261Ssam n->cg_old_btotoff = bswap32(o->cg_old_btotoff); 228186261Ssam n->cg_old_boff = bswap32(o->cg_old_boff); 229186261Ssam n->cg_iusedoff = bswap32(o->cg_iusedoff); 230186261Ssam n->cg_freeoff = bswap32(o->cg_freeoff); 231186261Ssam n->cg_nextfreeoff = bswap32(o->cg_nextfreeoff); 232186261Ssam n->cg_clustersumoff = bswap32(o->cg_clustersumoff); 233186261Ssam n->cg_clusteroff = bswap32(o->cg_clusteroff); 234186261Ssam n->cg_nclusterblks = bswap32(o->cg_nclusterblks); 235186261Ssam n->cg_niblk = bswap32(o->cg_niblk); 236186261Ssam n->cg_initediblk = bswap32(o->cg_initediblk); 237186261Ssam n->cg_time = bswap64(o->cg_time); 238185222Ssam 239186261Ssam if (fs->fs_magic == FS_UFS2_MAGIC) 240186261Ssam return; 241185222Ssam 242186261Ssam if (n->cg_magic == CG_MAGIC) { 243186261Ssam btotoff = n->cg_old_btotoff; 244186261Ssam boff = n->cg_old_boff; 245186261Ssam clustersumoff = n->cg_clustersumoff; 246186261Ssam } else { 247186261Ssam btotoff = bswap32(n->cg_old_btotoff); 248186261Ssam boff = bswap32(n->cg_old_boff); 249186261Ssam clustersumoff = bswap32(n->cg_clustersumoff); 250186261Ssam } 251186261Ssam n32 = (u_int32_t *)((u_int8_t *)n + btotoff); 252186261Ssam o32 = (u_int32_t *)((u_int8_t *)o + btotoff); 253186261Ssam n16 = (u_int16_t *)((u_int8_t *)n + boff); 254186261Ssam o16 = (u_int16_t *)((u_int8_t *)o + boff); 255185222Ssam 256186261Ssam for (i = 0; i < fs->fs_old_cpg; i++) 257186261Ssam n32[i] = bswap32(o32[i]); 258186261Ssam 259186261Ssam for (i = 0; i < fs->fs_old_cpg * fs->fs_old_nrpos; i++) 260186261Ssam n16[i] = bswap16(o16[i]); 261185222Ssam 262186261Ssam n32 = (u_int32_t *)((u_int8_t *)n + clustersumoff); 263186261Ssam o32 = (u_int32_t *)((u_int8_t *)o + clustersumoff); 264186261Ssam for (i = 1; i < fs->fs_contigsumsize + 1; i++) 265186261Ssam n32[i] = bswap32(o32[i]); 266185222Ssam} 267