/**
* Swap headers only if the byte order is little endian
*/
static void
_ffdb_swap_header (ffdb_htab_t* hashp)
{
ffdb_hashhdr_t *hdrp;
int i;
hdrp = &hashp->hdr;
M_32_SWAP(hdrp->magic);
M_32_SWAP(hdrp->version);
M_32_SWAP(hdrp->lorder);
M_32_SWAP(hdrp->bsize);
M_32_SWAP(hdrp->bshift);
M_32_SWAP(hdrp->ovfl_point);
M_32_SWAP(hdrp->max_bucket);
M_32_SWAP(hdrp->high_mask);
M_32_SWAP(hdrp->low_mask);
M_32_SWAP(hdrp->ffactor);
M_32_SWAP(hdrp->nkeys);
M_32_SWAP(hdrp->hdrpages);
M_32_SWAP(hdrp->uinfolen);
M_16_SWAP(hdrp->uinfo_page);
M_16_SWAP(hdrp->uinfo_npages);
M_16_SWAP(hdrp->cfig_page);
M_16_SWAP(hdrp->cfig_npages);
M_32_SWAP(hdrp->num_cfigs);
M_32_SWAP(hdrp->h_charkey);
M_32_SWAP(hdrp->num_moved_pages);
for (i = 0; i < NCACHED; i++)
M_32_SWAP(hdrp->spares[i]);
for (i = 0; i < NCACHED; i++)
M_32_SWAP(hdrp->free_pages[i]);
M_32_SWAP(hdrp->chksum);
}
static void
swap_header(HTAB *hashp)
{
HASHHDR *hdrp;
int i;
hdrp = &hashp->hdr;
M_32_SWAP(hdrp->magic);
M_32_SWAP(hdrp->version);
M_32_SWAP(hdrp->lorder);
M_32_SWAP(hdrp->bsize);
M_32_SWAP(hdrp->bshift);
M_32_SWAP(hdrp->dsize);
M_32_SWAP(hdrp->ssize);
M_32_SWAP(hdrp->sshift);
M_32_SWAP(hdrp->ovfl_point);
M_32_SWAP(hdrp->last_freed);
M_32_SWAP(hdrp->max_bucket);
M_32_SWAP(hdrp->high_mask);
M_32_SWAP(hdrp->low_mask);
M_32_SWAP(hdrp->ffactor);
M_32_SWAP(hdrp->nkeys);
M_32_SWAP(hdrp->hdrpages);
M_32_SWAP(hdrp->h_charkey);
for (i = 0; i < NCACHED; i++) {
M_32_SWAP(hdrp->spares[i]);
M_16_SWAP(hdrp->bitmaps[i]);
}
}
static void
swabvid(struct cpu_disklabel *pcpul)
{
M_32_SWAP(pcpul->vid_oss);
M_16_SWAP(pcpul->vid_osl);
/*
M_16_SWAP(pcpul->vid_osa_u);
M_16_SWAP(pcpul->vid_osa_l);
*/
M_32_SWAP(pcpul->vid_cas);
}
/*
* __BT_BPGIN, __BT_BPGOUT --
* Convert host-specific number layout to/from the host-independent
* format stored on disk.
*
* Parameters:
* t: tree
* pg: page number
* h: page to convert
*/
void
__bt_pgin(void *t, pgno_t pg, void *pp)
{
PAGE *h;
indx_t i, top;
u_char flags;
char *p;
if (!F_ISSET(((BTREE *)t), B_NEEDSWAP))
return;
if (pg == P_META) {
mswap(pp);
return;
}
h = pp;
M_32_SWAP(h->pgno);
M_32_SWAP(h->prevpg);
M_32_SWAP(h->nextpg);
M_32_SWAP(h->flags);
M_16_SWAP(h->lower);
M_16_SWAP(h->upper);
top = NEXTINDEX(h);
if ((h->flags & P_TYPE) == P_BINTERNAL)
for (i = 0; i < top; i++) {
M_16_SWAP(h->linp[i]);
p = (char *)GETBINTERNAL(h, i);
P_32_SWAP(p);
p += sizeof(u_int32_t);
P_32_SWAP(p);
p += sizeof(pgno_t);
if (*(u_char *)p & P_BIGKEY) {
p += sizeof(u_char);
P_32_SWAP(p);
p += sizeof(pgno_t);
P_32_SWAP(p);
}
}
else if ((h->flags & P_TYPE) == P_BLEAF)
for (i = 0; i < top; i++) {
M_16_SWAP(h->linp[i]);
p = (char *)GETBLEAF(h, i);
P_32_SWAP(p);
p += sizeof(u_int32_t);
P_32_SWAP(p);
p += sizeof(u_int32_t);
flags = *(u_char *)p;
if (flags & (P_BIGKEY | P_BIGDATA)) {
p += sizeof(u_char);
if (flags & P_BIGKEY) {
P_32_SWAP(p);
p += sizeof(pgno_t);
P_32_SWAP(p);
}
if (flags & P_BIGDATA) {
p += sizeof(u_int32_t);
P_32_SWAP(p);
p += sizeof(pgno_t);
P_32_SWAP(p);
}
}
}
}
static void
swabcfg(struct cpu_disklabel *pcpul)
{
M_16_SWAP(pcpul->cfg_atm);
M_16_SWAP(pcpul->cfg_prm);
M_16_SWAP(pcpul->cfg_atm);
M_16_SWAP(pcpul->cfg_rec);
M_16_SWAP(pcpul->cfg_trk);
M_16_SWAP(pcpul->cfg_psm);
M_16_SWAP(pcpul->cfg_shd);
M_16_SWAP(pcpul->cfg_pcom);
M_16_SWAP(pcpul->cfg_rwcc);
M_16_SWAP(pcpul->cfg_ecc);
M_16_SWAP(pcpul->cfg_eatm);
M_16_SWAP(pcpul->cfg_eprm);
M_16_SWAP(pcpul->cfg_eatw);
M_16_SWAP(pcpul->cfg_rsvc1);
M_16_SWAP(pcpul->cfg_rsvc2);
}