int get_vss(BFILE *bfd, struct sbuf *sb, char **vssdata, size_t *vlen,
struct conf **confs)
{
bsid sid;
char *tmp=NULL;
*vlen=0;
while(!ensure_read(bfd, (char *)&sid, bsidsize, 0))
{
int64_t s=0;
if(!(tmp=(char *)realloc_w(tmp, (*vlen)+bsidsize, __func__)))
goto error;
memcpy(tmp+(*vlen), &sid, bsidsize);
(*vlen)+=bsidsize;
// dwStreamId==1 means start of backup data, so finish.
if(sid.dwStreamId==1)
{
// logp("\n%s: %d + %d\n",
// path, (int)sid.Size, (int)sid.dwStreamNameSize);
bfd->datalen=sid.Size;
break;
}
// Otherwise, need to read in the rest of the VSS header.
s=(sid.Size)+(sid.dwStreamNameSize);
if(!(tmp=(char *)realloc_w(tmp, (*vlen)+s, __func__))
|| ensure_read(bfd, tmp+(*vlen), s, 1))
{
goto error;
return -1;
}
(*vlen)+=s;
}
if(!(*vssdata=(char *)realloc_w(*vssdata, (*vlen)+9, __func__)))
goto error;
snprintf(*vssdata, 9, "%c%08X", META_VSS, (unsigned int)*vlen);
memcpy((*vssdata)+9, tmp, *vlen);
(*vlen)+=9;
return 0;
error:
if(tmp) free(tmp);
if(*vssdata)
{
free(*vssdata);
*vssdata=NULL;
}
*vlen=0;
return -1;
}
int szb_read8(szb_t *buf) {
int r;
assert(buf != NULL);
ensure_read(buf, 1);
r = buf->data[buf->pos];
buf->pos += 1;
return r;
}
static int dump_headers(FILE *inp)
{
struct bsid sid;
while(!ensure_read(&sid, inp))
{
size_t s=0;
dump_sid(&sid);
//if(sid.dwStreamId==1) break;
s=(sid.Size)+(sid.dwStreamNameSize);
if(skip_data(inp, s)) return -1;
}
return 0;
}
static int main_work(FILE *inp, FILE *outp)
{
struct bsid sid;
while(!ensure_read(&sid, inp))
{
size_t s=0;
s=(sid.Size)+(sid.dwStreamNameSize);
if(sid.dwStreamId==1)
{
if(extract_data(inp, outp, s)) return 1;
break;
}
else
{
if(skip_data(inp, s)) return -1;
}
}
return 0;
}
