1 /* $NetBSD: ffs_bswap.c,v 1.10 2000/12/23 14:42:06 enami Exp $ */ 2 3 /* 4 * Copyright (c) 1998 Manuel Bouyer. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. All advertising materials mentioning features or use of this software 15 * must display the following acknowledgement: 16 * This product includes software developed by the University of 17 * California, Berkeley and its contributors. 18 * 4. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 * 33 */ 34 35 #include <sys/param.h> 36 #include <sys/systm.h> 37 38 #include <ufs/ufs/dinode.h> 39 #include <ufs/ufs/ufs_bswap.h> 40 #include <ufs/ffs/fs.h> 41 #include <ufs/ffs/ffs_extern.h> 42 43 #if !defined(_KERNEL) 44 #include <string.h> 45 #endif 46 47 void 48 ffs_sb_swap(o, n, ns) 49 struct fs *o, *n; 50 int ns; 51 { 52 int i; 53 u_int32_t *o32, *n32; 54 u_int16_t *o16, *n16; 55 u_int32_t postbloff = ufs_rw32(o->fs_postbloff, ns); 56 u_int32_t postblfmt = ufs_rw32(o->fs_postblformat, ns); 57 58 /* 59 * In order to avoid a lot of lines, as the first 52 fields of 60 * the superblock are u_int32_t, we loop here to convert it. 61 */ 62 o32 = (u_int32_t *)o; 63 n32 = (u_int32_t *)n; 64 for (i = 0; i < 52; i++) 65 n32[i] = bswap32(o32[i]); 66 67 n->fs_cpc = bswap32(o->fs_cpc); 68 n->fs_fscktime = bswap32(o->fs_fscktime); 69 n->fs_contigsumsize = bswap32(o->fs_contigsumsize); 70 n->fs_maxsymlinklen = bswap32(o->fs_maxsymlinklen); 71 n->fs_inodefmt = bswap32(o->fs_inodefmt); 72 n->fs_maxfilesize = bswap64(o->fs_maxfilesize); 73 n->fs_qbmask = bswap64(o->fs_qbmask); 74 n->fs_qfmask = bswap64(o->fs_qfmask); 75 n->fs_state = bswap32(o->fs_state); 76 n->fs_postblformat = bswap32(o->fs_postblformat); 77 n->fs_nrpos = bswap32(o->fs_nrpos); 78 n->fs_postbloff = bswap32(o->fs_postbloff); 79 n->fs_rotbloff = bswap32(o->fs_rotbloff); 80 n->fs_magic = bswap32(o->fs_magic); 81 /* byteswap the postbl */ 82 o16 = (postblfmt == FS_42POSTBLFMT) ? o->fs_opostbl[0] : 83 (int16_t *)((u_int8_t *)o + postbloff); 84 n16 = (postblfmt == FS_42POSTBLFMT) ? n->fs_opostbl[0] : 85 (int16_t *)((u_int8_t *)n + postbloff); 86 for (i = 0; i < (postblfmt == FS_42POSTBLFMT ? 87 128 /* fs_opostbl[16][8] */ : 88 ufs_rw32(o->fs_cpc, ns) * ufs_rw32(o->fs_nrpos, ns)); i++) 89 n16[i] = bswap16(o16[i]); 90 } 91 92 void 93 ffs_dinode_swap(o, n) 94 struct dinode *o, *n; 95 { 96 97 n->di_mode = bswap16(o->di_mode); 98 n->di_nlink = bswap16(o->di_nlink); 99 n->di_u.oldids[0] = bswap16(o->di_u.oldids[0]); 100 n->di_u.oldids[1] = bswap16(o->di_u.oldids[1]); 101 n->di_size = bswap64(o->di_size); 102 n->di_atime = bswap32(o->di_atime); 103 n->di_atimensec = bswap32(o->di_atimensec); 104 n->di_mtime = bswap32(o->di_mtime); 105 n->di_mtimensec = bswap32(o->di_mtimensec); 106 n->di_ctime = bswap32(o->di_ctime); 107 n->di_ctimensec = bswap32(o->di_ctimensec); 108 memcpy(n->di_db, o->di_db, (NDADDR + NIADDR) * sizeof(u_int32_t)); 109 n->di_flags = bswap32(o->di_flags); 110 n->di_blocks = bswap32(o->di_blocks); 111 n->di_gen = bswap32(o->di_gen); 112 n->di_uid = bswap32(o->di_uid); 113 n->di_gid = bswap32(o->di_gid); 114 } 115 116 void 117 ffs_csum_swap(o, n, size) 118 struct csum *o, *n; 119 int size; 120 { 121 int i; 122 u_int32_t *oint, *nint; 123 124 oint = (u_int32_t*)o; 125 nint = (u_int32_t*)n; 126 127 for (i = 0; i < size / sizeof(u_int32_t); i++) 128 nint[i] = bswap32(oint[i]); 129 } 130