diff options
Diffstat (limited to 'usr.sbin/makefs/ufs/ffs/ffs_bswap.c')
| -rw-r--r-- | usr.sbin/makefs/ufs/ffs/ffs_bswap.c | 266 |
1 files changed, 266 insertions, 0 deletions
diff --git a/usr.sbin/makefs/ufs/ffs/ffs_bswap.c b/usr.sbin/makefs/ufs/ffs/ffs_bswap.c new file mode 100644 index 00000000000..7112d72ee95 --- /dev/null +++ b/usr.sbin/makefs/ufs/ffs/ffs_bswap.c @@ -0,0 +1,266 @@ +/* $NetBSD: ffs_bswap.c,v 1.39 2015/05/20 18:21:17 riastradh 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. + * + */ + +#include <sys/param.h> + +#include <ufs/ufs/dinode.h> +#include <ufs/ufs/quota.h> +#include <ufs/ufs/ufs_bswap.h> +#include <ufs/ffs/fs.h> +#include <ufs/ffs/ffs_extern.h> + +#include <stddef.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#define panic(x) printf("%s\n", (x)), abort() + +#define bswap16 swap16 +#define bswap32 swap32 +#define bswap64 swap64 + +void +ffs_sb_swap(struct fs *o, struct fs *n) +{ + size_t i; + u_int32_t *o32, *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 = (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); + 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) +{ + + 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); + memcpy(n->di_db, o->di_db, sizeof(n->di_db)); + memcpy(n->di_ib, o->di_ib, sizeof(n->di_ib)); + 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) +{ + 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); + memcpy(n->di_extb, o->di_extb, sizeof(n->di_extb)); + memcpy(n->di_db, o->di_db, sizeof(n->di_db)); + memcpy(n->di_ib, o->di_ib, sizeof(n->di_ib)); +} + +void +ffs_csum_swap(struct csum *o, struct csum *n, int size) +{ + size_t i; + u_int32_t *oint, *nint; + + oint = (u_int32_t*)o; + nint = (u_int32_t*)n; + + for (i = 0; i < size / sizeof(u_int32_t); i++) + nint[i] = bswap32(oint[i]); +} + +void +ffs_csumtotal_swap(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); +} + +/* + * Note that ffs_cg_swap may be called with o == n. + */ +void +ffs_cg_swap(struct cg *o, struct cg *n, struct fs *fs) +{ + int i; + u_int32_t *n32, *o32; + u_int16_t *n16, *o16; + int32_t btotoff, boff, clustersumoff; + + n->cg_firstfield = bswap32(o->cg_firstfield); + n->cg_magic = bswap32(o->cg_magic); + n->cg_old_time = bswap32(o->cg_old_time); + n->cg_cgx = bswap32(o->cg_cgx); + n->cg_old_ncyl = bswap16(o->cg_old_ncyl); + n->cg_old_niblk = bswap16(o->cg_old_niblk); + n->cg_ndblk = bswap32(o->cg_ndblk); + n->cg_cs.cs_ndir = bswap32(o->cg_cs.cs_ndir); + n->cg_cs.cs_nbfree = bswap32(o->cg_cs.cs_nbfree); + n->cg_cs.cs_nifree = bswap32(o->cg_cs.cs_nifree); + n->cg_cs.cs_nffree = bswap32(o->cg_cs.cs_nffree); + n->cg_rotor = bswap32(o->cg_rotor); + n->cg_frotor = bswap32(o->cg_frotor); + n->cg_irotor = bswap32(o->cg_irotor); + for (i = 0; i < MAXFRAG; i++) + n->cg_frsum[i] = bswap32(o->cg_frsum[i]); + + if ((fs->fs_magic != FS_UFS2_MAGIC) && + (fs->fs_old_postblformat == FS_42POSTBLFMT)) { /* old format */ + struct ocg *on, *oo; + int j; + on = (struct ocg *)n; + oo = (struct ocg *)o; + + for (i = 0; i < 32; i++) { + on->cg_btot[i] = bswap32(oo->cg_btot[i]); + for (j = 0; j < 8; j++) + on->cg_b[i][j] = bswap16(oo->cg_b[i][j]); + } + memmove(on->cg_iused, oo->cg_iused, 256); + on->cg_magic = bswap32(oo->cg_magic); + } else { /* new format */ + + n->cg_old_btotoff = bswap32(o->cg_old_btotoff); + n->cg_old_boff = bswap32(o->cg_old_boff); + n->cg_iusedoff = bswap32(o->cg_iusedoff); + n->cg_freeoff = bswap32(o->cg_freeoff); + n->cg_nextfreeoff = bswap32(o->cg_nextfreeoff); + n->cg_clustersumoff = bswap32(o->cg_clustersumoff); + n->cg_clusteroff = bswap32(o->cg_clusteroff); + n->cg_nclusterblks = bswap32(o->cg_nclusterblks); + n->cg_niblk = bswap32(o->cg_niblk); + n->cg_initediblk = bswap32(o->cg_initediblk); + n->cg_time = bswap64(o->cg_time); + + if (n->cg_magic == CG_MAGIC) { + btotoff = n->cg_old_btotoff; + boff = n->cg_old_boff; + clustersumoff = n->cg_clustersumoff; + } else { + btotoff = bswap32(n->cg_old_btotoff); + boff = bswap32(n->cg_old_boff); + clustersumoff = bswap32(n->cg_clustersumoff); + } + + n32 = (u_int32_t *)((u_int8_t *)n + clustersumoff); + o32 = (u_int32_t *)((u_int8_t *)o + clustersumoff); + for (i = 1; i < fs->fs_contigsumsize + 1; i++) + n32[i] = bswap32(o32[i]); + + if (fs->fs_magic == FS_UFS2_MAGIC) + return; + + n32 = (u_int32_t *)((u_int8_t *)n + btotoff); + o32 = (u_int32_t *)((u_int8_t *)o + btotoff); + n16 = (u_int16_t *)((u_int8_t *)n + boff); + o16 = (u_int16_t *)((u_int8_t *)o + boff); + + for (i = 0; i < fs->fs_old_cpg; i++) + n32[i] = bswap32(o32[i]); + + for (i = 0; i < fs->fs_old_cpg * fs->fs_old_nrpos; i++) + n16[i] = bswap16(o16[i]); + } +} |