/* $NetBSD: ffs_bswap.c,v 1.1 2021/05/27 06:54:44 mrg Exp $ */ /* * Copyright (c) 1998 Manuel Bouyer. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * */ /* * This copy is a minimal version for libsa and it's ufs.c. The unused * functions are removed, and additional swapping is performed on the * di_extb, di_db, and di_ib arrays. */ #include __KERNEL_RCSID(0, "$NetBSD: ffs_bswap.c,v 1.1 2021/05/27 06:54:44 mrg Exp $"); #include #include #include #include #include #include #include static void libsa_ffs_csumtotal_swap(const struct csum_total *o, struct csum_total *n) { n->cs_ndir = bswap64(o->cs_ndir); n->cs_nbfree = bswap64(o->cs_nbfree); n->cs_nifree = bswap64(o->cs_nifree); n->cs_nffree = bswap64(o->cs_nffree); } void ffs_sb_swap(const struct fs *o, struct fs *n) { size_t i; const u_int32_t *o32; u_int32_t *n32; /* * In order to avoid a lot of lines, as the first N fields (52) * of the superblock up to fs_fmod are u_int32_t, we just loop * here to convert them. */ o32 = (const u_int32_t *)o; n32 = (u_int32_t *)n; for (i = 0; i < offsetof(struct fs, fs_fmod) / sizeof(u_int32_t); i++) n32[i] = bswap32(o32[i]); n->fs_swuid = bswap64(o->fs_swuid); n->fs_cgrotor = bswap32(o->fs_cgrotor); /* Unused */ n->fs_old_cpc = bswap32(o->fs_old_cpc); /* These fields overlap with a possible location for the * historic FS_DYNAMICPOSTBLFMT postbl table, and with the * first half of the historic FS_42POSTBLFMT postbl table. */ n->fs_maxbsize = bswap32(o->fs_maxbsize); /* XXX journal */ n->fs_quota_magic = bswap32(o->fs_quota_magic); for (i = 0; i < MAXQUOTAS; i++) n->fs_quotafile[i] = bswap64(o->fs_quotafile[i]); n->fs_sblockloc = bswap64(o->fs_sblockloc); libsa_ffs_csumtotal_swap(&o->fs_cstotal, &n->fs_cstotal); n->fs_time = bswap64(o->fs_time); n->fs_size = bswap64(o->fs_size); n->fs_dsize = bswap64(o->fs_dsize); n->fs_csaddr = bswap64(o->fs_csaddr); n->fs_pendingblocks = bswap64(o->fs_pendingblocks); n->fs_pendinginodes = bswap32(o->fs_pendinginodes); /* These fields overlap with the second half of the * historic FS_42POSTBLFMT postbl table */ for (i = 0; i < FSMAXSNAP; i++) n->fs_snapinum[i] = bswap32(o->fs_snapinum[i]); n->fs_avgfilesize = bswap32(o->fs_avgfilesize); n->fs_avgfpdir = bswap32(o->fs_avgfpdir); /* fs_sparecon[28] - ignore for now */ n->fs_flags = bswap32(o->fs_flags); n->fs_contigsumsize = bswap32(o->fs_contigsumsize); n->fs_maxsymlinklen = bswap32(o->fs_maxsymlinklen); n->fs_old_inodefmt = bswap32(o->fs_old_inodefmt); n->fs_maxfilesize = bswap64(o->fs_maxfilesize); n->fs_qbmask = bswap64(o->fs_qbmask); n->fs_qfmask = bswap64(o->fs_qfmask); n->fs_state = bswap32(o->fs_state); n->fs_old_postblformat = bswap32(o->fs_old_postblformat); n->fs_old_nrpos = bswap32(o->fs_old_nrpos); n->fs_old_postbloff = bswap32(o->fs_old_postbloff); n->fs_old_rotbloff = bswap32(o->fs_old_rotbloff); n->fs_magic = bswap32(o->fs_magic); } void ffs_dinode1_swap(struct ufs1_dinode *o, struct ufs1_dinode *n) { size_t i; n->di_mode = bswap16(o->di_mode); n->di_nlink = bswap16(o->di_nlink); n->di_oldids[0] = bswap16(o->di_oldids[0]); n->di_oldids[1] = bswap16(o->di_oldids[1]); n->di_size = bswap64(o->di_size); n->di_atime = bswap32(o->di_atime); n->di_atimensec = bswap32(o->di_atimensec); n->di_mtime = bswap32(o->di_mtime); n->di_mtimensec = bswap32(o->di_mtimensec); n->di_ctime = bswap32(o->di_ctime); n->di_ctimensec = bswap32(o->di_ctimensec); /* Swap these here, unlike kernel version .*/ for (i = 0; i < UFS_NDADDR; i++) n->di_db[i] = bswap32(o->di_db[i]); for (i = 0; i < UFS_NIADDR; i++) n->di_ib[i] = bswap32(o->di_ib[i]); n->di_flags = bswap32(o->di_flags); n->di_blocks = bswap32(o->di_blocks); n->di_gen = bswap32(o->di_gen); n->di_uid = bswap32(o->di_uid); n->di_gid = bswap32(o->di_gid); } void ffs_dinode2_swap(struct ufs2_dinode *o, struct ufs2_dinode *n) { size_t i; n->di_mode = bswap16(o->di_mode); n->di_nlink = bswap16(o->di_nlink); n->di_uid = bswap32(o->di_uid); n->di_gid = bswap32(o->di_gid); n->di_blksize = bswap32(o->di_blksize); n->di_size = bswap64(o->di_size); n->di_blocks = bswap64(o->di_blocks); n->di_atime = bswap64(o->di_atime); n->di_atimensec = bswap32(o->di_atimensec); n->di_mtime = bswap64(o->di_mtime); n->di_mtimensec = bswap32(o->di_mtimensec); n->di_ctime = bswap64(o->di_ctime); n->di_ctimensec = bswap32(o->di_ctimensec); n->di_birthtime = bswap64(o->di_birthtime); n->di_birthnsec = bswap32(o->di_birthnsec); n->di_gen = bswap32(o->di_gen); n->di_kernflags = bswap32(o->di_kernflags); n->di_flags = bswap32(o->di_flags); n->di_extsize = bswap32(o->di_extsize); /* Swap these here, unlike kernel version .*/ for (i = 0; i < UFS_NXADDR; i++) n->di_extb[i] = bswap64(o->di_extb[i]); for (i = 0; i < UFS_NDADDR; i++) n->di_db[i] = bswap64(o->di_db[i]); for (i = 0; i < UFS_NIADDR; i++) n->di_ib[i] = bswap64(o->di_ib[i]); }