ffs_bswap.c revision 1.1.2.2
1 /* $NetBSD: ffs_bswap.c,v 1.1.2.2 2021/05/31 22:15:21 cjep 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 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 * 26 */ 27 28 /* 29 * This copy is a minimal version for libsa and it's ufs.c. The unused 30 * functions are removed, and additional swapping is performed on the 31 * di_extb, di_db, and di_ib arrays. 32 */ 33 34 #include <sys/cdefs.h> 35 __KERNEL_RCSID(0, "$NetBSD: ffs_bswap.c,v 1.1.2.2 2021/05/31 22:15:21 cjep Exp $"); 36 37 #include <sys/param.h> 38 #include <lib/libkern/libkern.h> 39 40 #include <ufs/ufs/dinode.h> 41 #include <ufs/ufs/quota.h> 42 #include <ufs/ufs/ufs_bswap.h> 43 #include <ufs/ffs/fs.h> 44 #include <ufs/ffs/ffs_extern.h> 45 46 static void 47 libsa_ffs_csumtotal_swap(const struct csum_total *o, struct csum_total *n) 48 { 49 n->cs_ndir = bswap64(o->cs_ndir); 50 n->cs_nbfree = bswap64(o->cs_nbfree); 51 n->cs_nifree = bswap64(o->cs_nifree); 52 n->cs_nffree = bswap64(o->cs_nffree); 53 } 54 55 void 56 ffs_sb_swap(const struct fs *o, struct fs *n) 57 { 58 size_t i; 59 const u_int32_t *o32; 60 u_int32_t *n32; 61 62 /* 63 * In order to avoid a lot of lines, as the first N fields (52) 64 * of the superblock up to fs_fmod are u_int32_t, we just loop 65 * here to convert them. 66 */ 67 o32 = (const u_int32_t *)o; 68 n32 = (u_int32_t *)n; 69 for (i = 0; i < offsetof(struct fs, fs_fmod) / sizeof(u_int32_t); i++) 70 n32[i] = bswap32(o32[i]); 71 72 n->fs_swuid = bswap64(o->fs_swuid); 73 n->fs_cgrotor = bswap32(o->fs_cgrotor); /* Unused */ 74 n->fs_old_cpc = bswap32(o->fs_old_cpc); 75 76 /* These fields overlap with a possible location for the 77 * historic FS_DYNAMICPOSTBLFMT postbl table, and with the 78 * first half of the historic FS_42POSTBLFMT postbl table. 79 */ 80 n->fs_maxbsize = bswap32(o->fs_maxbsize); 81 /* XXX journal */ 82 n->fs_quota_magic = bswap32(o->fs_quota_magic); 83 for (i = 0; i < MAXQUOTAS; i++) 84 n->fs_quotafile[i] = bswap64(o->fs_quotafile[i]); 85 n->fs_sblockloc = bswap64(o->fs_sblockloc); 86 libsa_ffs_csumtotal_swap(&o->fs_cstotal, &n->fs_cstotal); 87 n->fs_time = bswap64(o->fs_time); 88 n->fs_size = bswap64(o->fs_size); 89 n->fs_dsize = bswap64(o->fs_dsize); 90 n->fs_csaddr = bswap64(o->fs_csaddr); 91 n->fs_pendingblocks = bswap64(o->fs_pendingblocks); 92 n->fs_pendinginodes = bswap32(o->fs_pendinginodes); 93 94 /* These fields overlap with the second half of the 95 * historic FS_42POSTBLFMT postbl table 96 */ 97 for (i = 0; i < FSMAXSNAP; i++) 98 n->fs_snapinum[i] = bswap32(o->fs_snapinum[i]); 99 n->fs_avgfilesize = bswap32(o->fs_avgfilesize); 100 n->fs_avgfpdir = bswap32(o->fs_avgfpdir); 101 /* fs_sparecon[28] - ignore for now */ 102 n->fs_flags = bswap32(o->fs_flags); 103 n->fs_contigsumsize = bswap32(o->fs_contigsumsize); 104 n->fs_maxsymlinklen = bswap32(o->fs_maxsymlinklen); 105 n->fs_old_inodefmt = bswap32(o->fs_old_inodefmt); 106 n->fs_maxfilesize = bswap64(o->fs_maxfilesize); 107 n->fs_qbmask = bswap64(o->fs_qbmask); 108 n->fs_qfmask = bswap64(o->fs_qfmask); 109 n->fs_state = bswap32(o->fs_state); 110 n->fs_old_postblformat = bswap32(o->fs_old_postblformat); 111 n->fs_old_nrpos = bswap32(o->fs_old_nrpos); 112 n->fs_old_postbloff = bswap32(o->fs_old_postbloff); 113 n->fs_old_rotbloff = bswap32(o->fs_old_rotbloff); 114 115 n->fs_magic = bswap32(o->fs_magic); 116 } 117 118 void 119 ffs_dinode1_swap(struct ufs1_dinode *o, struct ufs1_dinode *n) 120 { 121 size_t i; 122 123 n->di_mode = bswap16(o->di_mode); 124 n->di_nlink = bswap16(o->di_nlink); 125 n->di_oldids[0] = bswap16(o->di_oldids[0]); 126 n->di_oldids[1] = bswap16(o->di_oldids[1]); 127 n->di_size = bswap64(o->di_size); 128 n->di_atime = bswap32(o->di_atime); 129 n->di_atimensec = bswap32(o->di_atimensec); 130 n->di_mtime = bswap32(o->di_mtime); 131 n->di_mtimensec = bswap32(o->di_mtimensec); 132 n->di_ctime = bswap32(o->di_ctime); 133 n->di_ctimensec = bswap32(o->di_ctimensec); 134 /* Swap these here, unlike kernel version .*/ 135 for (i = 0; i < UFS_NDADDR; i++) 136 n->di_db[i] = bswap32(o->di_db[i]); 137 for (i = 0; i < UFS_NIADDR; i++) 138 n->di_ib[i] = bswap32(o->di_ib[i]); 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); 144 } 145 146 void 147 ffs_dinode2_swap(struct ufs2_dinode *o, struct ufs2_dinode *n) 148 { 149 size_t i; 150 151 n->di_mode = bswap16(o->di_mode); 152 n->di_nlink = bswap16(o->di_nlink); 153 n->di_uid = bswap32(o->di_uid); 154 n->di_gid = bswap32(o->di_gid); 155 n->di_blksize = bswap32(o->di_blksize); 156 n->di_size = bswap64(o->di_size); 157 n->di_blocks = bswap64(o->di_blocks); 158 n->di_atime = bswap64(o->di_atime); 159 n->di_atimensec = bswap32(o->di_atimensec); 160 n->di_mtime = bswap64(o->di_mtime); 161 n->di_mtimensec = bswap32(o->di_mtimensec); 162 n->di_ctime = bswap64(o->di_ctime); 163 n->di_ctimensec = bswap32(o->di_ctimensec); 164 n->di_birthtime = bswap64(o->di_birthtime); 165 n->di_birthnsec = bswap32(o->di_birthnsec); 166 n->di_gen = bswap32(o->di_gen); 167 n->di_kernflags = bswap32(o->di_kernflags); 168 n->di_flags = bswap32(o->di_flags); 169 n->di_extsize = bswap32(o->di_extsize); 170 /* Swap these here, unlike kernel version .*/ 171 for (i = 0; i < UFS_NXADDR; i++) 172 n->di_extb[i] = bswap64(o->di_extb[i]); 173 for (i = 0; i < UFS_NDADDR; i++) 174 n->di_db[i] = bswap64(o->di_db[i]); 175 for (i = 0; i < UFS_NIADDR; i++) 176 n->di_ib[i] = bswap64(o->di_ib[i]); 177 } 178
Indexes created Thu Oct 23 22:10:10 GMT 2025