1 /* $NetBSD: ffs_bswap.c,v 1.28 2004/05/25 14:54:59 hannken Exp $ */
4 * SPDX-License-Identifier: BSD-2-Clause-NetBSD
6 * Copyright (c) 1998 Manuel Bouyer.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 #include <sys/cdefs.h>
31 __FBSDID("$FreeBSD$");
33 #include <sys/param.h>
35 #include <sys/systm.h>
46 #include <ufs/ufs/dinode.h>
47 #include "ffs/ufs_bswap.h"
48 #include <ufs/ffs/fs.h>
49 #include "ffs/ffs_extern.h"
51 #define fs_old_postbloff fs_spare5[0]
52 #define fs_old_rotbloff fs_spare5[1]
53 #define fs_old_postbl_start fs_maxbsize
54 #define fs_old_headswitch fs_id[0]
55 #define fs_old_trkseek fs_id[1]
56 #define fs_old_csmask fs_spare1[0]
57 #define fs_old_csshift fs_spare1[1]
59 #define FS_42POSTBLFMT -1 /* 4.2BSD rotational table format */
60 #define FS_DYNAMICPOSTBLFMT 1 /* dynamic rotational table format */
62 void ffs_csum_swap(struct csum *o, struct csum *n, int size);
63 void ffs_csumtotal_swap(struct csum_total *o, struct csum_total *n);
66 ffs_sb_swap(struct fs *o, struct fs *n)
72 * In order to avoid a lot of lines, as the first N fields (52)
73 * of the superblock up to fs_fmod are u_int32_t, we just loop
74 * here to convert them.
78 for (i = 0; i < offsetof(struct fs, fs_fmod) / sizeof(u_int32_t); i++)
79 n32[i] = bswap32(o32[i]);
81 n->fs_swuid = bswap64(o->fs_swuid);
82 n->fs_cgrotor = bswap32(o->fs_cgrotor); /* Unused */
83 n->fs_old_cpc = bswap32(o->fs_old_cpc);
85 /* These fields overlap with a possible location for the
86 * historic FS_DYNAMICPOSTBLFMT postbl table, and with the
87 * first half of the historic FS_42POSTBLFMT postbl table.
89 n->fs_maxbsize = bswap32(o->fs_maxbsize);
90 n->fs_sblockloc = bswap64(o->fs_sblockloc);
91 ffs_csumtotal_swap(&o->fs_cstotal, &n->fs_cstotal);
92 n->fs_time = bswap64(o->fs_time);
93 n->fs_size = bswap64(o->fs_size);
94 n->fs_dsize = bswap64(o->fs_dsize);
95 n->fs_csaddr = bswap64(o->fs_csaddr);
96 n->fs_pendingblocks = bswap64(o->fs_pendingblocks);
97 n->fs_pendinginodes = bswap32(o->fs_pendinginodes);
99 /* These fields overlap with the second half of the
100 * historic FS_42POSTBLFMT postbl table
102 for (i = 0; i < FSMAXSNAP; i++)
103 n->fs_snapinum[i] = bswap32(o->fs_snapinum[i]);
104 n->fs_avgfilesize = bswap32(o->fs_avgfilesize);
105 n->fs_avgfpdir = bswap32(o->fs_avgfpdir);
106 /* fs_sparecon[28] - ignore for now */
107 n->fs_flags = bswap32(o->fs_flags);
108 n->fs_contigsumsize = bswap32(o->fs_contigsumsize);
109 n->fs_maxsymlinklen = bswap32(o->fs_maxsymlinklen);
110 n->fs_old_inodefmt = bswap32(o->fs_old_inodefmt);
111 n->fs_maxfilesize = bswap64(o->fs_maxfilesize);
112 n->fs_qbmask = bswap64(o->fs_qbmask);
113 n->fs_qfmask = bswap64(o->fs_qfmask);
114 n->fs_state = bswap32(o->fs_state);
115 n->fs_old_postblformat = bswap32(o->fs_old_postblformat);
116 n->fs_old_nrpos = bswap32(o->fs_old_nrpos);
117 n->fs_old_postbloff = bswap32(o->fs_old_postbloff);
118 n->fs_old_rotbloff = bswap32(o->fs_old_rotbloff);
120 n->fs_magic = bswap32(o->fs_magic);
124 ffs_dinode1_swap(struct ufs1_dinode *o, struct ufs1_dinode *n)
127 n->di_mode = bswap16(o->di_mode);
128 n->di_nlink = bswap16(o->di_nlink);
129 n->di_size = bswap64(o->di_size);
130 n->di_atime = bswap32(o->di_atime);
131 n->di_atimensec = bswap32(o->di_atimensec);
132 n->di_mtime = bswap32(o->di_mtime);
133 n->di_mtimensec = bswap32(o->di_mtimensec);
134 n->di_ctime = bswap32(o->di_ctime);
135 n->di_ctimensec = bswap32(o->di_ctimensec);
136 memcpy(n->di_db, o->di_db, sizeof(n->di_db));
137 memcpy(n->di_ib, o->di_ib, sizeof(n->di_ib));
138 n->di_flags = bswap32(o->di_flags);
139 n->di_blocks = bswap32(o->di_blocks);
140 n->di_gen = bswap32(o->di_gen);
141 n->di_uid = bswap32(o->di_uid);
142 n->di_gid = bswap32(o->di_gid);
146 ffs_dinode2_swap(struct ufs2_dinode *o, struct ufs2_dinode *n)
148 n->di_mode = bswap16(o->di_mode);
149 n->di_nlink = bswap16(o->di_nlink);
150 n->di_uid = bswap32(o->di_uid);
151 n->di_gid = bswap32(o->di_gid);
152 n->di_blksize = bswap32(o->di_blksize);
153 n->di_size = bswap64(o->di_size);
154 n->di_blocks = bswap64(o->di_blocks);
155 n->di_atime = bswap64(o->di_atime);
156 n->di_atimensec = bswap32(o->di_atimensec);
157 n->di_mtime = bswap64(o->di_mtime);
158 n->di_mtimensec = bswap32(o->di_mtimensec);
159 n->di_ctime = bswap64(o->di_ctime);
160 n->di_ctimensec = bswap32(o->di_ctimensec);
161 n->di_birthtime = bswap64(o->di_ctime);
162 n->di_birthnsec = bswap32(o->di_ctimensec);
163 n->di_gen = bswap32(o->di_gen);
164 n->di_kernflags = bswap32(o->di_kernflags);
165 n->di_flags = bswap32(o->di_flags);
166 n->di_extsize = bswap32(o->di_extsize);
167 memcpy(n->di_extb, o->di_extb, sizeof(n->di_extb));
168 memcpy(n->di_db, o->di_db, sizeof(n->di_db));
169 memcpy(n->di_ib, o->di_ib, sizeof(n->di_ib));
173 ffs_csum_swap(struct csum *o, struct csum *n, int size)
176 u_int32_t *oint, *nint;
178 oint = (u_int32_t*)o;
179 nint = (u_int32_t*)n;
181 for (i = 0; i < size / sizeof(u_int32_t); i++)
182 nint[i] = bswap32(oint[i]);
186 ffs_csumtotal_swap(struct csum_total *o, struct csum_total *n)
188 n->cs_ndir = bswap64(o->cs_ndir);
189 n->cs_nbfree = bswap64(o->cs_nbfree);
190 n->cs_nifree = bswap64(o->cs_nifree);
191 n->cs_nffree = bswap64(o->cs_nffree);
195 * Note that ffs_cg_swap may be called with o == n.
198 ffs_cg_swap(struct cg *o, struct cg *n, struct fs *fs)
201 u_int32_t *n32, *o32;
202 u_int16_t *n16, *o16;
203 int32_t btotoff, boff, clustersumoff;
205 n->cg_firstfield = bswap32(o->cg_firstfield);
206 n->cg_magic = bswap32(o->cg_magic);
207 n->cg_old_time = bswap32(o->cg_old_time);
208 n->cg_cgx = bswap32(o->cg_cgx);
209 n->cg_old_ncyl = bswap16(o->cg_old_ncyl);
210 n->cg_old_niblk = bswap16(o->cg_old_niblk);
211 n->cg_ndblk = bswap32(o->cg_ndblk);
212 n->cg_cs.cs_ndir = bswap32(o->cg_cs.cs_ndir);
213 n->cg_cs.cs_nbfree = bswap32(o->cg_cs.cs_nbfree);
214 n->cg_cs.cs_nifree = bswap32(o->cg_cs.cs_nifree);
215 n->cg_cs.cs_nffree = bswap32(o->cg_cs.cs_nffree);
216 n->cg_rotor = bswap32(o->cg_rotor);
217 n->cg_frotor = bswap32(o->cg_frotor);
218 n->cg_irotor = bswap32(o->cg_irotor);
219 for (i = 0; i < MAXFRAG; i++)
220 n->cg_frsum[i] = bswap32(o->cg_frsum[i]);
222 n->cg_old_btotoff = bswap32(o->cg_old_btotoff);
223 n->cg_old_boff = bswap32(o->cg_old_boff);
224 n->cg_iusedoff = bswap32(o->cg_iusedoff);
225 n->cg_freeoff = bswap32(o->cg_freeoff);
226 n->cg_nextfreeoff = bswap32(o->cg_nextfreeoff);
227 n->cg_clustersumoff = bswap32(o->cg_clustersumoff);
228 n->cg_clusteroff = bswap32(o->cg_clusteroff);
229 n->cg_nclusterblks = bswap32(o->cg_nclusterblks);
230 n->cg_niblk = bswap32(o->cg_niblk);
231 n->cg_initediblk = bswap32(o->cg_initediblk);
232 n->cg_time = bswap64(o->cg_time);
234 if (fs->fs_magic == FS_UFS2_MAGIC)
237 if (n->cg_magic == CG_MAGIC) {
238 btotoff = n->cg_old_btotoff;
239 boff = n->cg_old_boff;
240 clustersumoff = n->cg_clustersumoff;
242 btotoff = bswap32(n->cg_old_btotoff);
243 boff = bswap32(n->cg_old_boff);
244 clustersumoff = bswap32(n->cg_clustersumoff);
246 n32 = (u_int32_t *)((u_int8_t *)n + btotoff);
247 o32 = (u_int32_t *)((u_int8_t *)o + btotoff);
248 n16 = (u_int16_t *)((u_int8_t *)n + boff);
249 o16 = (u_int16_t *)((u_int8_t *)o + boff);
251 for (i = 0; i < fs->fs_old_cpg; i++)
252 n32[i] = bswap32(o32[i]);
254 for (i = 0; i < fs->fs_old_cpg * fs->fs_old_nrpos; i++)
255 n16[i] = bswap16(o16[i]);
257 n32 = (u_int32_t *)((u_int8_t *)n + clustersumoff);
258 o32 = (u_int32_t *)((u_int8_t *)o + clustersumoff);
259 for (i = 1; i < fs->fs_contigsumsize + 1; i++)
260 n32[i] = bswap32(o32[i]);