virtual void grow(std::size_t by) {
//L_(info) << "growing store by " << by << " bytes";
sync();
filesize_ += by;
bip::shared_memory_object::remove(filename_.c_str());
base_t::grow(filename_.c_str(), filesize_);
base_t newstore(bip::open_only, filename_.c_str());
base_t::swap(newstore);
}
struct store *newfstore(char *dir)
{
struct store *st;
struct fstore *fst;
char tbuf[1024];
struct loghdr lh;
struct idxhdr ih;
struct stat64 sb;
fst = calloc(1, sizeof(*fst));
fst->logfd = -1;
fst->idxfd = -1;
snprintf(tbuf, sizeof(tbuf), "%s/log", dir);
if((fst->logfd = open(tbuf, O_RDWR | O_LARGEFILE)) < 0) {
flog(LOG_ERR, "could not open log %s: %s", tbuf, strerror(errno));
release(fst);
return(NULL);
}
if(fstat64(fst->logfd, &sb)) {
flog(LOG_ERR, "could not stat log: %s", strerror(errno));
release(fst);
return(NULL);
}
fst->logsize = sb.st_size;
if(readall(fst->logfd, &lh, sizeof(lh), 0)) {
flog(LOG_ERR, "could not read log header: %s", strerror(errno));
release(fst);
return(NULL);
}
if(memcmp(lh.magic, LOGMAGIC, sizeof(LOGMAGIC))) {
flog(LOG_ERR, "invalid log magic");
release(fst);
return(NULL);
}
snprintf(tbuf, sizeof(tbuf), "%s/index", dir);
if((fst->idxfd = open(tbuf, O_RDWR | O_LARGEFILE)) < 0) {
flog(LOG_ERR, "could not open index %s: %s", tbuf, strerror(errno));
release(fst);
return(NULL);
}
if(fstat64(fst->idxfd, &sb)) {
flog(LOG_ERR, "could not stat index: %s", strerror(errno));
release(fst);
return(NULL);
}
if(readall(fst->idxfd, &ih, sizeof(ih), 0)) {
flog(LOG_ERR, "could not read index header: %s", strerror(errno));
release(fst);
return(NULL);
}
if(memcmp(ih.magic, IDXMAGIC, sizeof(IDXMAGIC))) {
flog(LOG_ERR, "invalid index magic");
release(fst);
return(NULL);
}
if(sb.st_size != (sizeof(struct idxhdr) + ih.size * sizeof(struct idxent))) {
flog(LOG_ERR, "invalid index size");
release(fst);
return(NULL);
}
fst->idxsize = ih.size;
st = newstore(&fstops);
st->pdata = fst;
return(st);
}
