C | /* Open a database file and - Mfp - m420bff2e


/* Open a database file and connect a hash database object. */
bool tchdbopen(TCHDB *hdb, const char *path, int omode){
  assert(hdb && path);
  if(!HDBLOCKMETHOD(hdb, true)) return false;
  if(hdb->fd >= 0){
    tchdbsetecode(hdb, TCEINVALID, __FILE__, __LINE__, __func__);
    HDBUNLOCKMETHOD(hdb);
    return false;
  }
  char *rpath = tcrealpath(path);
  if(!rpath){
    int ecode = TCEOPEN;
    switch(errno){
    case EACCES: ecode = TCENOPERM; break;
    case ENOENT: ecode = TCENOFILE; break;
    case ENOTDIR: ecode = TCENOFILE; break;
    }
    tchdbsetecode(hdb, ecode, __FILE__, __LINE__, __func__);
    HDBUNLOCKMETHOD(hdb);
    return false;
  }
  if(!tcpathlock(rpath)){
    tchdbsetecode(hdb, TCETHREAD, __FILE__, __LINE__, __func__);
    TCFREE(rpath);
    HDBUNLOCKMETHOD(hdb);
    return false;
  }
  bool rv = tchdbopenimpl(hdb, path, omode);
  if(rv){
    hdb->rpath = rpath;
  } else {
    tcpathunlock(rpath);
    TCFREE(rpath);
  }
  HDBUNLOCKMETHOD(hdb);
  return rv;
}