10 werrstr("bad block size");
16 extern int vttobig(ulong);
19 vtrootpack(VtRoot *r, uchar *p)
26 if(bsize >= (1<<16)) {
27 vers |= _VtRootVersionBig;
28 bsize = vttobig(bsize);
30 sysfatal("invalid root blocksize: %#lx", r->blocksize);
34 memmove(p, r->name, sizeof(r->name));
36 memmove(p, r->type, sizeof(r->type));
38 memmove(p, r->score, VtScoreSize);
42 memmove(p, r->prev, VtScoreSize);
45 assert(p-op == VtRootSize);
49 vtrootunpack(VtRoot *r, uchar *p)
53 memset(r, 0, sizeof(*r));
56 if((vers&~_VtRootVersionBig) != VtRootVersion) {
57 werrstr("unknown root version");
61 memmove(r->name, p, sizeof(r->name));
62 r->name[sizeof(r->name)-1] = 0;
64 memmove(r->type, p, sizeof(r->type));
65 r->type[sizeof(r->type)-1] = 0;
67 memmove(r->score, p, VtScoreSize);
69 r->blocksize = U16GET(p);
70 if(vers & _VtRootVersionBig)
71 r->blocksize = (r->blocksize >> 5) << (r->blocksize & 31);
72 if(checksize(r->blocksize) < 0)
75 memmove(r->prev, p, VtScoreSize);
78 assert(p-op == VtRootSize);