ffs_bswap.c revision 1.25
1 /* $NetBSD: ffs_bswap.c,v 1.25 2003/12/31 18:40:23 dbj 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 Manuel Bouyer. 17 * 4. The name of the author may not be used to endorse or promote products 18 * derived from this software without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 23 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 25 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 29 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 * 31 */ 32 33 #if HAVE_NBTOOL_CONFIG_H 34 #include "nbtool_config.h" 35 #endif 36 37 #include <sys/cdefs.h> 38 __KERNEL_RCSID(0, "$NetBSD: ffs_bswap.c,v 1.25 2003/12/31 18:40:23 dbj Exp $"); 39 40 #include <sys/param.h> 41 #if defined(_KERNEL) 42 #include <sys/systm.h> 43 #endif 44 45 #include <ufs/ufs/dinode.h> 46 #include <ufs/ufs/ufs_bswap.h> 47 #include <ufs/ffs/fs.h> 48 #include <ufs/ffs/ffs_extern.h> 49 50 #if !defined(_KERNEL) 51 #include <stddef.h> 52 #include <stdio.h> 53 #include <stdlib.h> 54 #include <string.h> 55 #define panic(x) printf("%s\n", (x)), abort() 56 #endif 57 58 void 59 ffs_sb_swap(struct fs *o, struct fs *n) 60 { 61 int i; 62 u_int32_t *o32, *n32; 63 64 /* 65 * In order to avoid a lot of lines, as the first N fields (52) 66 * of the superblock up to fs_fmod are u_int32_t, we just loop 67 * here to convert them. 68 */ 69 o32 = (u_int32_t *)o; 70 n32 = (u_int32_t *)n; 71 for (i = 0; i < offsetof(struct fs, fs_fmod) / sizeof(u_int32_t); i++) 72 n32[i] = bswap32(o32[i]); 73 74 n->fs_swuid = bswap64(o->fs_swuid); 75 n->fs_cgrotor = bswap32(o->fs_cgrotor); /* Unused */ 76 n->fs_old_cpc = bswap32(o->fs_old_cpc); 77 78 /* These fields overlap with a possible location for the 79 * historic FS_DYNAMICPOSTBLFMT postbl table, and with the 80 * first half of the historic FS_42POSTBLFMT postbl table. 81 */ 82 n->fs_maxbsize = bswap32(o->fs_maxbsize); 83 n->fs_sblockloc = bswap64(o->fs_sblockloc); 84 ffs_csumtotal_swap(&o->fs_cstotal, &n->fs_cstotal); 85 n->fs_time = bswap64(o->fs_time); 86 n->fs_size = bswap64(o->fs_size); 87 n->fs_dsize = bswap64(o->fs_dsize); 88 n->fs_csaddr = bswap64(o->fs_csaddr); 89 n->fs_pendingblocks = bswap64(o->fs_pendingblocks); 90 n->fs_pendinginodes = bswap32(o->fs_pendinginodes); 91 92 /* These fields overlap with the second half of the 93 * historic FS_42POSTBLFMT postbl table 94 */ 95 /* fs_snapinum[20] - ignore for now */ 96 n->fs_avgfilesize = bswap32(o->fs_avgfilesize); 97 n->fs_avgfpdir = bswap32(o->fs_avgfpdir); 98 /* fs_sparecon[28] - ignore for now */ 99 n->fs_flags = bswap32(o->fs_flags); 100 n->fs_contigsumsize = bswap32(o->fs_contigsumsize); 101 n->fs_maxsymlinklen = bswap32(o->fs_maxsymlinklen); 102 n->fs_old_inodefmt = bswap32(o->fs_old_inodefmt); 103 n->fs_maxfilesize = bswap64(o->fs_maxfilesize); 104 n->fs_qbmask = bswap64(o->fs_qbmask); 105 n->fs_qfmask = bswap64(o->fs_qfmask); 106 n->fs_state = bswap32(o->fs_state); 107 n->fs_old_postblformat = bswap32(o->fs_old_postblformat); 108 n->fs_old_nrpos = bswap32(o->fs_old_nrpos); 109 n->fs_old_postbloff = bswap32(o->fs_old_postbloff); 110 n->fs_old_rotbloff = bswap32(o->fs_old_rotbloff); 111 112 n->fs_magic = bswap32(o->fs_magic); 113 } 114 115 void 116 ffs_dinode1_swap(struct ufs1_dinode *o, struct ufs1_dinode *n) 117 { 118 119 n->di_mode = bswap16(o->di_mode); 120 n->di_nlink = bswap16(o->di_nlink); 121 n->di_u.oldids[0] = bswap16(o->di_u.oldids[0]); 122 n->di_u.oldids[1] = bswap16(o->di_u.oldids[1]); 123 n->di_size = bswap64(o->di_size); 124 n->di_atime = bswap32(o->di_atime); 125 n->di_atimensec = bswap32(o->di_atimensec); 126 n->di_mtime = bswap32(o->di_mtime); 127 n->di_mtimensec = bswap32(o->di_mtimensec); 128 n->di_ctime = bswap32(o->di_ctime); 129 n->di_ctimensec = bswap32(o->di_ctimensec); 130 memcpy(n->di_db, o->di_db, (NDADDR + NIADDR) * sizeof(u_int32_t)); 131 n->di_flags = bswap32(o->di_flags); 132 n->di_blocks = bswap32(o->di_blocks); 133 n->di_gen = bswap32(o->di_gen); 134 n->di_uid = bswap32(o->di_uid); 135 n->di_gid = bswap32(o->di_gid); 136 } 137 138 void 139 ffs_dinode2_swap(struct ufs2_dinode *o, struct ufs2_dinode *n) 140 { 141 n->di_mode = bswap16(o->di_mode); 142 n->di_nlink = bswap16(o->di_nlink); 143 n->di_uid = bswap32(o->di_uid); 144 n->di_gid = bswap32(o->di_gid); 145 n->di_blksize = bswap32(o->di_blksize); 146 n->di_size = bswap64(o->di_size); 147 n->di_blocks = bswap64(o->di_blocks); 148 n->di_atime = bswap64(o->di_atime); 149 n->di_atimensec = bswap32(o->di_atimensec); 150 n->di_mtime = bswap64(o->di_mtime); 151 n->di_mtimensec = bswap32(o->di_mtimensec); 152 n->di_ctime = bswap64(o->di_ctime); 153 n->di_ctimensec = bswap32(o->di_ctimensec); 154 n->di_birthtime = bswap64(o->di_ctime); 155 n->di_birthnsec = bswap32(o->di_ctimensec); 156 n->di_gen = bswap32(o->di_gen); 157 n->di_kernflags = bswap32(o->di_kernflags); 158 n->di_flags = bswap32(o->di_flags); 159 n->di_extsize = bswap32(o->di_extsize); 160 memcpy(n->di_extb, o->di_extb, (NXADDR + NDADDR + NIADDR) * 8); 161 } 162 163 void 164 ffs_csum_swap(struct csum *o, struct csum *n, int size) 165 { 166 int i; 167 u_int32_t *oint, *nint; 168 169 oint = (u_int32_t*)o; 170 nint = (u_int32_t*)n; 171 172 for (i = 0; i < size / sizeof(u_int32_t); i++) 173 nint[i] = bswap32(oint[i]); 174 } 175 176 void 177 ffs_csumtotal_swap(struct csum_total *o, struct csum_total *n) 178 { 179 n->cs_ndir = bswap64(o->cs_ndir); 180 n->cs_nbfree = bswap64(o->cs_nbfree); 181 n->cs_nifree = bswap64(o->cs_nifree); 182 n->cs_nffree = bswap64(o->cs_nffree); 183 n->cs_numclusters = bswap64(o->cs_numclusters); 184 } 185 186 /* 187 * Note that ffs_cg_swap may be called with o == n. 188 */ 189 void 190 ffs_cg_swap(struct cg *o, struct cg *n, struct fs *fs) 191 { 192 int i; 193 u_int32_t *n32, *o32; 194 u_int16_t *n16, *o16; 195 int32_t btotoff, boff, clustersumoff; 196 197 n->cg_firstfield = bswap32(o->cg_firstfield); 198 n->cg_magic = bswap32(o->cg_magic); 199 n->cg_old_time = bswap32(o->cg_old_time); 200 n->cg_cgx = bswap32(o->cg_cgx); 201 n->cg_old_ncyl = bswap16(o->cg_old_ncyl); 202 n->cg_old_niblk = bswap16(o->cg_old_niblk); 203 n->cg_ndblk = bswap32(o->cg_ndblk); 204 n->cg_cs.cs_ndir = bswap32(o->cg_cs.cs_ndir); 205 n->cg_cs.cs_nbfree = bswap32(o->cg_cs.cs_nbfree); 206 n->cg_cs.cs_nifree = bswap32(o->cg_cs.cs_nifree); 207 n->cg_cs.cs_nffree = bswap32(o->cg_cs.cs_nffree); 208 n->cg_rotor = bswap32(o->cg_rotor); 209 n->cg_frotor = bswap32(o->cg_frotor); 210 n->cg_irotor = bswap32(o->cg_irotor); 211 for (i = 0; i < MAXFRAG; i++) 212 n->cg_frsum[i] = bswap32(o->cg_frsum[i]); 213 214 /* XXX This check should probably really just be 215 * (n->cg_magic != CG_MAGIC) -- dbj 216 */ 217 if ((fs->fs_magic != FS_UFS2_MAGIC) && 218 (fs->fs_old_postblformat == FS_42POSTBLFMT)) { /* old format */ 219 struct ocg *on, *oo; 220 int j; 221 on = (struct ocg *)n; 222 oo = (struct ocg *)o; 223 224 for (i = 0; i < 32; i++) { 225 on->cg_btot[i] = bswap32(oo->cg_btot[i]); 226 for (j = 0; j < 8; j++) 227 on->cg_b[i][j] = bswap16(oo->cg_b[i][j]); 228 } 229 memmove(on->cg_iused, oo->cg_iused, 256); 230 on->cg_magic = bswap32(oo->cg_magic); 231 } else { /* new format */ 232 233 n->cg_old_btotoff = bswap32(o->cg_old_btotoff); 234 n->cg_old_boff = bswap32(o->cg_old_boff); 235 n->cg_iusedoff = bswap32(o->cg_iusedoff); 236 n->cg_freeoff = bswap32(o->cg_freeoff); 237 n->cg_nextfreeoff = bswap32(o->cg_nextfreeoff); 238 n->cg_clustersumoff = bswap32(o->cg_clustersumoff); 239 n->cg_clusteroff = bswap32(o->cg_clusteroff); 240 n->cg_nclusterblks = bswap32(o->cg_nclusterblks); 241 n->cg_niblk = bswap32(o->cg_niblk); 242 n->cg_initediblk = bswap32(o->cg_initediblk); 243 n->cg_time = bswap64(o->cg_time); 244 245 if (fs->fs_magic == FS_UFS2_MAGIC) 246 return; 247 248 if (n->cg_magic == CG_MAGIC) { 249 btotoff = n->cg_old_btotoff; 250 boff = n->cg_old_boff; 251 clustersumoff = n->cg_clustersumoff; 252 } else { 253 /* XXX this shouldn't happen -- dbj */ 254 btotoff = bswap32(n->cg_old_btotoff); 255 boff = bswap32(n->cg_old_boff); 256 clustersumoff = bswap32(n->cg_clustersumoff); 257 } 258 n32 = (u_int32_t *)((u_int8_t *)n + btotoff); 259 o32 = (u_int32_t *)((u_int8_t *)o + btotoff); 260 n16 = (u_int16_t *)((u_int8_t *)n + boff); 261 o16 = (u_int16_t *)((u_int8_t *)o + boff); 262 263 for (i = 0; i < fs->fs_old_cpg; i++) 264 n32[i] = bswap32(o32[i]); 265 266 for (i = 0; i < fs->fs_old_cpg * fs->fs_old_nrpos; i++) 267 n16[i] = bswap16(o16[i]); 268 269 n32 = (u_int32_t *)((u_int8_t *)n + clustersumoff); 270 o32 = (u_int32_t *)((u_int8_t *)o + clustersumoff); 271 for (i = 1; i < fs->fs_contigsumsize + 1; i++) 272 n32[i] = bswap32(o32[i]); 273 } 274 } 275
Indexes created Mon Oct 20 05:10:11 GMT 2025