1 /* $NetBSD: ffs_bswap.c,v 1.28 2004/05/25 14:54:59 hannken Exp $ */
4 * Copyright (c) 1998 Manuel Bouyer.
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
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.
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.
33 #include <sys/cdefs.h>
34 __FBSDID("$FreeBSD$");
36 #include <sys/param.h>
38 #include <sys/systm.h>
41 #include <ufs/ufs/dinode.h>
42 #include "ffs/ufs_bswap.h"
43 #include <ufs/ffs/fs.h>
50 #define panic(x) printf("%s\n", (x)), abort()
53 #define fs_old_postbloff fs_spare5[0]
54 #define fs_old_rotbloff fs_spare5[1]
55 #define fs_old_postbl_start fs_maxbsize
56 #define fs_old_headswitch fs_id[0]
57 #define fs_old_trkseek fs_id[1]
58 #define fs_old_csmask fs_spare1[0]
59 #define fs_old_csshift fs_spare1[1]
61 #define FS_42POSTBLFMT -1 /* 4.2BSD rotational table format */
62 #define FS_DYNAMICPOSTBLFMT 1 /* dynamic rotational table format */
64 void ffs_csum_swap(struct csum *o, struct csum *n, int size);
65 void ffs_csumtotal_swap(struct csum_total *o, struct csum_total *n);
68 ffs_sb_swap(struct fs *o, struct fs *n)
74 * In order to avoid a lot of lines, as the first N fields (52)
75 * of the superblock up to fs_fmod are u_int32_t, we just loop
76 * here to convert them.
80 for (i = 0; i < offsetof(struct fs, fs_fmod) / sizeof(u_int32_t); i++)
81 n32[i] = bswap32(o32[i]);
83 n->fs_swuid = bswap64(o->fs_swuid);
84 n->fs_cgrotor = bswap32(o->fs_cgrotor); /* Unused */
85 n->fs_old_cpc = bswap32(o->fs_old_cpc);
87 /* These fields overlap with a possible location for the
88 * historic FS_DYNAMICPOSTBLFMT postbl table, and with the
89 * first half of the historic FS_42POSTBLFMT postbl table.
91 n->fs_maxbsize = bswap32(o->fs_maxbsize);
92 n->fs_sblockloc = bswap64(o->fs_sblockloc);
93 ffs_csumtotal_swap(&o->fs_cstotal, &n->fs_cstotal);
94 n->fs_time = bswap64(o->fs_time);
95 n->fs_size = bswap64(o->fs_size);
96 n->fs_dsize = bswap64(o->fs_dsize);
97 n->fs_csaddr = bswap64(o->fs_csaddr);
98 n->fs_pendingblocks = bswap64(o->fs_pendingblocks);
99 n->fs_pendinginodes = bswap32(o->fs_pendinginodes);
101 /* These fields overlap with the second half of the
102 * historic FS_42POSTBLFMT postbl table
104 for (i = 0; i < FSMAXSNAP; i++)
105 n->fs_snapinum[i] = bswap32(o->fs_snapinum[i]);
106 n->fs_avgfilesize = bswap32(o->fs_avgfilesize);
107 n->fs_avgfpdir = bswap32(o->fs_avgfpdir);
108 /* fs_sparecon[28] - ignore for now */
109 n->fs_flags = bswap32(o->fs_flags);
110 n->fs_contigsumsize = bswap32(o->fs_contigsumsize);
111 n->fs_maxsymlinklen = bswap32(o->fs_maxsymlinklen);
112 n->fs_old_inodefmt = bswap32(o->fs_old_inodefmt);
113 n->fs_maxfilesize = bswap64(o->fs_maxfilesize);
114 n->fs_qbmask = bswap64(o->fs_qbmask);
115 n->fs_qfmask = bswap64(o->fs_qfmask);
116 n->fs_state = bswap32(o->fs_state);
117 n->fs_old_postblformat = bswap32(o->fs_old_postblformat);
118 n->fs_old_nrpos = bswap32(o->fs_old_nrpos);
119 n->fs_old_postbloff = bswap32(o->fs_old_postbloff);
120 n->fs_old_rotbloff = bswap32(o->fs_old_rotbloff);
122 n->fs_magic = bswap32(o->fs_magic);
126 ffs_dinode1_swap(struct ufs1_dinode *o, struct ufs1_dinode *n)
129 n->di_mode = bswap16(o->di_mode);
130 n->di_nlink = bswap16(o->di_nlink);
131 n->di_size = bswap64(o->di_size);
132 n->di_atime = bswap32(o->di_atime);
133 n->di_atimensec = bswap32(o->di_atimensec);
134 n->di_mtime = bswap32(o->di_mtime);
135 n->di_mtimensec = bswap32(o->di_mtimensec);
136 n->di_ctime = bswap32(o->di_ctime);
137 n->di_ctimensec = bswap32(o->di_ctimensec);
138 memcpy(n->di_db, o->di_db, (NDADDR + NIADDR) * sizeof(u_int32_t));
139 n->di_flags = bswap32(o->di_flags);
140 n->di_blocks = bswap32(o->di_blocks);
141 n->di_gen = bswap32(o->di_gen);
142 n->di_uid = bswap32(o->di_uid);
143 n->di_gid = bswap32(o->di_gid);
147 ffs_dinode2_swap(struct ufs2_dinode *o, struct ufs2_dinode *n)
149 n->di_mode = bswap16(o->di_mode);
150 n->di_nlink = bswap16(o->di_nlink);
151 n->di_uid = bswap32(o->di_uid);
152 n->di_gid = bswap32(o->di_gid);
153 n->di_blksize = bswap32(o->di_blksize);
154 n->di_size = bswap64(o->di_size);
155 n->di_blocks = bswap64(o->di_blocks);
156 n->di_atime = bswap64(o->di_atime);
157 n->di_atimensec = bswap32(o->di_atimensec);
158 n->di_mtime = bswap64(o->di_mtime);
159 n->di_mtimensec = bswap32(o->di_mtimensec);
160 n->di_ctime = bswap64(o->di_ctime);
161 n->di_ctimensec = bswap32(o->di_ctimensec);
162 n->di_birthtime = bswap64(o->di_ctime);
163 n->di_birthnsec = bswap32(o->di_ctimensec);
164 n->di_gen = bswap32(o->di_gen);
165 n->di_kernflags = bswap32(o->di_kernflags);
166 n->di_flags = bswap32(o->di_flags);
167 n->di_extsize = bswap32(o->di_extsize);
168 memcpy(n->di_extb, o->di_extb, (NXADDR + NDADDR + NIADDR) * 8);
172 ffs_csum_swap(struct csum *o, struct csum *n, int size)
175 u_int32_t *oint, *nint;
177 oint = (u_int32_t*)o;
178 nint = (u_int32_t*)n;
180 for (i = 0; i < size / sizeof(u_int32_t); i++)
181 nint[i] = bswap32(oint[i]);
185 ffs_csumtotal_swap(struct csum_total *o, struct csum_total *n)
187 n->cs_ndir = bswap64(o->cs_ndir);
188 n->cs_nbfree = bswap64(o->cs_nbfree);
189 n->cs_nifree = bswap64(o->cs_nifree);
190 n->cs_nffree = bswap64(o->cs_nffree);
194 * Note that ffs_cg_swap may be called with o == n.
197 ffs_cg_swap(struct cg *o, struct cg *n, struct fs *fs)
200 u_int32_t *n32, *o32;
201 u_int16_t *n16, *o16;
202 int32_t btotoff, boff, clustersumoff;
204 n->cg_firstfield = bswap32(o->cg_firstfield);
205 n->cg_magic = bswap32(o->cg_magic);
206 n->cg_old_time = bswap32(o->cg_old_time);
207 n->cg_cgx = bswap32(o->cg_cgx);
208 n->cg_old_ncyl = bswap16(o->cg_old_ncyl);
209 n->cg_old_niblk = bswap16(o->cg_old_niblk);
210 n->cg_ndblk = bswap32(o->cg_ndblk);
211 n->cg_cs.cs_ndir = bswap32(o->cg_cs.cs_ndir);
212 n->cg_cs.cs_nbfree = bswap32(o->cg_cs.cs_nbfree);
213 n->cg_cs.cs_nifree = bswap32(o->cg_cs.cs_nifree);
214 n->cg_cs.cs_nffree = bswap32(o->cg_cs.cs_nffree);
215 n->cg_rotor = bswap32(o->cg_rotor);
216 n->cg_frotor = bswap32(o->cg_frotor);
217 n->cg_irotor = bswap32(o->cg_irotor);
218 for (i = 0; i < MAXFRAG; i++)
219 n->cg_frsum[i] = bswap32(o->cg_frsum[i]);
221 n->cg_old_btotoff = bswap32(o->cg_old_btotoff);
222 n->cg_old_boff = bswap32(o->cg_old_boff);
223 n->cg_iusedoff = bswap32(o->cg_iusedoff);
224 n->cg_freeoff = bswap32(o->cg_freeoff);
225 n->cg_nextfreeoff = bswap32(o->cg_nextfreeoff);
226 n->cg_clustersumoff = bswap32(o->cg_clustersumoff);
227 n->cg_clusteroff = bswap32(o->cg_clusteroff);
228 n->cg_nclusterblks = bswap32(o->cg_nclusterblks);
229 n->cg_niblk = bswap32(o->cg_niblk);
230 n->cg_initediblk = bswap32(o->cg_initediblk);
231 n->cg_time = bswap64(o->cg_time);
233 if (fs->fs_magic == FS_UFS2_MAGIC)
236 if (n->cg_magic == CG_MAGIC) {
237 btotoff = n->cg_old_btotoff;
238 boff = n->cg_old_boff;
239 clustersumoff = n->cg_clustersumoff;
241 btotoff = bswap32(n->cg_old_btotoff);
242 boff = bswap32(n->cg_old_boff);
243 clustersumoff = bswap32(n->cg_clustersumoff);
245 n32 = (u_int32_t *)((u_int8_t *)n + btotoff);
246 o32 = (u_int32_t *)((u_int8_t *)o + btotoff);
247 n16 = (u_int16_t *)((u_int8_t *)n + boff);
248 o16 = (u_int16_t *)((u_int8_t *)o + boff);
250 for (i = 0; i < fs->fs_old_cpg; i++)
251 n32[i] = bswap32(o32[i]);
253 for (i = 0; i < fs->fs_old_cpg * fs->fs_old_nrpos; i++)
254 n16[i] = bswap16(o16[i]);
256 n32 = (u_int32_t *)((u_int8_t *)n + clustersumoff);
257 o32 = (u_int32_t *)((u_int8_t *)o + clustersumoff);
258 for (i = 1; i < fs->fs_contigsumsize + 1; i++)
259 n32[i] = bswap32(o32[i]);