ext2fs_bswap.c revision 1.7
1 /* $NetBSD: ext2fs_bswap.c,v 1.7 2001/11/08 02:39:07 lukem Exp $ */ 2 3 /* 4 * Copyright (c) 1997 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/cdefs.h> 36 __KERNEL_RCSID(0, "$NetBSD: ext2fs_bswap.c,v 1.7 2001/11/08 02:39:07 lukem Exp $"); 37 38 #include <sys/types.h> 39 #include <sys/systm.h> 40 #include <ufs/ext2fs/ext2fs.h> 41 #include <ufs/ext2fs/ext2fs_dinode.h> 42 43 #if !defined(_KERNEL) 44 #include <string.h> 45 #endif 46 47 /* These functions are only needed if native byte order is not big endian */ 48 #if BYTE_ORDER == BIG_ENDIAN 49 void 50 e2fs_sb_bswap(old, new) 51 struct ext2fs *old, *new; 52 { 53 /* preserve unused fields */ 54 memcpy(new, old, sizeof(struct ext2fs)); 55 new->e2fs_icount = bswap32(old->e2fs_icount); 56 new->e2fs_bcount = bswap32(old->e2fs_bcount); 57 new->e2fs_rbcount = bswap32(old->e2fs_rbcount); 58 new->e2fs_fbcount = bswap32(old->e2fs_fbcount); 59 new->e2fs_ficount = bswap32(old->e2fs_ficount); 60 new->e2fs_first_dblock = bswap32(old->e2fs_first_dblock); 61 new->e2fs_log_bsize = bswap32(old->e2fs_log_bsize); 62 new->e2fs_fsize = bswap32(old->e2fs_fsize); 63 new->e2fs_bpg = bswap32(old->e2fs_bpg); 64 new->e2fs_fpg = bswap32(old->e2fs_fpg); 65 new->e2fs_ipg = bswap32(old->e2fs_ipg); 66 new->e2fs_mtime = bswap32(old->e2fs_mtime); 67 new->e2fs_wtime = bswap32(old->e2fs_wtime); 68 new->e2fs_mnt_count = bswap16(old->e2fs_mnt_count); 69 new->e2fs_max_mnt_count = bswap16(old->e2fs_max_mnt_count); 70 new->e2fs_magic = bswap16(old->e2fs_magic); 71 new->e2fs_state = bswap16(old->e2fs_state); 72 new->e2fs_beh = bswap16(old->e2fs_beh); 73 new->e2fs_minrev = bswap16(old->e2fs_minrev); 74 new->e2fs_lastfsck = bswap32(old->e2fs_lastfsck); 75 new->e2fs_fsckintv = bswap32(old->e2fs_fsckintv); 76 new->e2fs_creator = bswap32(old->e2fs_creator); 77 new->e2fs_rev = bswap32(old->e2fs_rev); 78 new->e2fs_ruid = bswap16(old->e2fs_ruid); 79 new->e2fs_rgid = bswap16(old->e2fs_rgid); 80 new->e2fs_first_ino = bswap32(old->e2fs_first_ino); 81 new->e2fs_inode_size = bswap16(old->e2fs_inode_size); 82 new->e2fs_block_group_nr = bswap16(old->e2fs_block_group_nr); 83 new->e2fs_features_compat = bswap32(old->e2fs_features_compat); 84 new->e2fs_features_incompat = bswap32(old->e2fs_features_incompat); 85 new->e2fs_features_rocompat = bswap32(old->e2fs_features_rocompat); 86 new->e2fs_algo = bswap32(old->e2fs_algo); 87 } 88 89 void e2fs_cg_bswap(old, new, size) 90 struct ext2_gd *old, *new; 91 int size; 92 { 93 int i; 94 for (i=0; i < (size / sizeof(struct ext2_gd)); i++) { 95 new[i].ext2bgd_b_bitmap = bswap32(old[i].ext2bgd_b_bitmap); 96 new[i].ext2bgd_i_bitmap = bswap32(old[i].ext2bgd_i_bitmap); 97 new[i].ext2bgd_i_tables = bswap32(old[i].ext2bgd_i_tables); 98 new[i].ext2bgd_nbfree = bswap16(old[i].ext2bgd_nbfree); 99 new[i].ext2bgd_nifree = bswap16(old[i].ext2bgd_nifree); 100 new[i].ext2bgd_ndirs = bswap16(old[i].ext2bgd_ndirs); 101 } 102 } 103 104 void e2fs_i_bswap(old, new) 105 struct ext2fs_dinode *old, *new; 106 { 107 new->e2di_mode = bswap16(old->e2di_mode); 108 new->e2di_uid = bswap16(old->e2di_uid); 109 new->e2di_gid = bswap16(old->e2di_gid); 110 new->e2di_nlink = bswap16(old->e2di_nlink); 111 new->e2di_size = bswap32(old->e2di_size); 112 new->e2di_atime = bswap32(old->e2di_atime); 113 new->e2di_ctime = bswap32(old->e2di_ctime); 114 new->e2di_mtime = bswap32(old->e2di_mtime); 115 new->e2di_dtime = bswap32(old->e2di_dtime); 116 new->e2di_nblock = bswap32(old->e2di_nblock); 117 new->e2di_flags = bswap32(old->e2di_flags); 118 new->e2di_gen = bswap32(old->e2di_gen); 119 new->e2di_facl = bswap32(old->e2di_facl); 120 new->e2di_dacl = bswap32(old->e2di_dacl); 121 new->e2di_faddr = bswap32(old->e2di_faddr); 122 memcpy(&new->e2di_blocks[0], &old->e2di_blocks[0], 123 (NDADDR+NIADDR) * sizeof(int)); 124 } 125 #endif 126
Indexes created Mon Sep 29 21:09:56 GMT 2025