void
entryPack(Entry *e, uchar *p, int index)
{
ulong t32;
int flags;
p += index * VtEntrySize;
U32PUT(p, e->gen);
U16PUT(p+4, e->psize);
U16PUT(p+6, e->dsize);
flags = e->flags | ((e->depth << VtEntryDepthShift) & VtEntryDepthMask);
U8PUT(p+8, flags);
memset(p+9, 0, 5);
U48PUT(p+14, e->size, t32);
if(flags & VtEntryLocal){
if(globalToLocal(e->score) == NilBlock)
abort();
memset(p+20, 0, 7);
U8PUT(p+27, e->archive);
U32PUT(p+28, e->snap);
U32PUT(p+32, e->tag);
memmove(p+36, e->score+16, 4);
}else
memmove(p+20, e->score, VtScoreSize);
}
void
vtrootpack(VtRoot *r, uchar *p)
{
uchar *op = p;
int vers, bsize;
vers = VtRootVersion;
bsize = r->blocksize;
if(bsize >= (1<<16)) {
vers |= _VtRootVersionBig;
bsize = vttobig(bsize);
if(bsize < 0)
sysfatal("invalid root blocksize: %#lx", r->blocksize);
}
U16PUT(p, vers);
p += 2;
memmove(p, r->name, sizeof(r->name));
p += sizeof(r->name);
memmove(p, r->type, sizeof(r->type));
p += sizeof(r->type);
memmove(p, r->score, VtScoreSize);
p += VtScoreSize;
U16PUT(p, bsize);
p += 2;
memmove(p, r->prev, VtScoreSize);
p += VtScoreSize;
assert(p-op == VtRootSize);
}
void
headerPack(Header *h, uchar *p)
{
memset(p, 0, HeaderSize);
U32PUT(p, HeaderMagic);
U16PUT(p+4, HeaderVersion);
U16PUT(p+6, h->blockSize);
U32PUT(p+8, h->super);
U32PUT(p+12, h->label);
U32PUT(p+16, h->data);
U32PUT(p+20, h->end);
}
void
mbPack(MetaBlock *mb)
{
uchar *p;
p = mb->buf;
assert(!mb->botch);
U32PUT(p, MetaMagic);
U16PUT(p+4, mb->size);
U16PUT(p+6, mb->free);
U16PUT(p+8, mb->maxindex);
U16PUT(p+10, mb->nindex);
}
static int
stringPack(char *s, uchar *p)
{
int n;
n = strlen(s);
U16PUT(p, n);
memmove(p+2, s, n);
return n+2;
}
void
dePack(DirEntry *dir, MetaEntry *me)
{
uchar *p;
ulong t32;
p = me->p;
U32PUT(p, DirMagic);
U16PUT(p+4, 9); /* version */
p += 6;
p += stringPack(dir->elem, p);
U32PUT(p, dir->entry);
U32PUT(p+4, dir->gen);
U32PUT(p+8, dir->mentry);
U32PUT(p+12, dir->mgen);
U64PUT(p+16, dir->qid, t32);
p += 24;
p += stringPack(dir->uid, p);
p += stringPack(dir->gid, p);
p += stringPack(dir->mid, p);
U32PUT(p, dir->mtime);
U32PUT(p+4, dir->mcount);
U32PUT(p+8, dir->ctime);
U32PUT(p+12, dir->atime);
U32PUT(p+16, dir->mode);
p += 5*4;
if(dir->qidSpace){
U8PUT(p, DeQidSpace);
U16PUT(p+1, 2*8);
p += 3;
U64PUT(p, dir->qidOffset, t32);
U64PUT(p+8, dir->qidMax, t32);
p += 16;
}
assert(p == me->p + me->size);
}
void
vtentrypack(VtEntry *e, uchar *p, int index)
{
ulong t32;
int flags;
uchar *op;
int depth;
int psize, dsize;
p += index * VtEntrySize;
op = p;
depth = e->type&VtTypeDepthMask;
flags = (e->flags&~(_VtEntryDir|_VtEntryDepthMask));
flags |= depth << _VtEntryDepthShift;
if(e->type - depth == VtDirType)
flags |= _VtEntryDir;
U32PUT(p, e->gen);
p += 4;
psize = e->psize;
dsize = e->dsize;
if(psize >= (1<<16) || dsize >= (1<<16)) {
flags |= _VtEntryBig;
psize = vttobig(psize);
dsize = vttobig(dsize);
if(psize < 0 || dsize < 0)
sysfatal("invalid entry psize/dsize: %ld/%ld", e->psize, e->dsize);
}
U16PUT(p, psize);
p += 2;
U16PUT(p, dsize);
p += 2;
U8PUT(p, flags);
p++;
memset(p, 0, 5);
p += 5;
U48PUT(p, e->size, t32);
p += 6;
memmove(p, e->score, VtScoreSize);
p += VtScoreSize;
assert(p-op == VtEntrySize);
}
void
vtrootpack(VtRoot *r, uint8_t *p)
{
uint8_t *op = p;
U16PUT(p, VtRootVersion);
p += 2;
memmove(p, r->name, sizeof(r->name));
p += sizeof(r->name);
memmove(p, r->type, sizeof(r->type));
p += sizeof(r->type);
memmove(p, r->score, VtScoreSize);
p += VtScoreSize;
U16PUT(p, r->blocksize);
p += 2;
memmove(p, r->prev, VtScoreSize);
p += VtScoreSize;
assert(p-op == VtRootSize);
}
void
mbInsert(MetaBlock *mb, int i, MetaEntry *me)
{
uchar *p;
int o, n;
assert(mb->nindex < mb->maxindex);
o = me->p - mb->buf;
n = me->size;
if(o+n > mb->size){
mb->free -= mb->size - o;
mb->size = o + n;
}else
mb->free -= n;
p = mb->buf + MetaHeaderSize + i*MetaIndexSize;
n = (mb->nindex-i)*MetaIndexSize;
memmove(p+MetaIndexSize, p, n);
U16PUT(p, me->p - mb->buf);
U16PUT(p+2, me->size);
mb->nindex++;
}
void
superPack(Super *s, uchar *p)
{
u32int t32;
memset(p, 0, SuperSize);
U32PUT(p, SuperMagic);
assert(s->version == SuperVersion);
U16PUT(p+4, s->version);
U32PUT(p+6, s->epochLow);
U32PUT(p+10, s->epochHigh);
U64PUT(p+14, s->qid, t32);
U32PUT(p+22, s->active);
U32PUT(p+26, s->next);
U32PUT(p+30, s->current);
memmove(p+34, s->last, VtScoreSize);
memmove(p+54, s->name, sizeof(s->name));
}
static void
mbCompact(MetaBlock *mb, MetaChunk *mc)
{
int oo, o, n, i;
oo = MetaHeaderSize + mb->maxindex*MetaIndexSize;
for(i=0; i<mb->nindex; i++){
o = mc[i].offset;
n = mc[i].size;
if(o != oo){
memmove(mb->buf + oo, mb->buf + o, n);
U16PUT(mb->buf + MetaHeaderSize + mc[i].index*MetaIndexSize, oo);
}
oo += n;
}
mb->size = oo;
mb->free = 0;
}
