userinfo            9 deadlock.c     userinfo rec;
userinfo           20 deadlock.c     	fl.l_len=sizeof(userinfo);
userinfo           29 deadlock.c     		fl.l_start=sizeof(userinfo);
userinfo           36 deadlock.c     		fl.l_start=sizeof(userinfo);
userinfo            9 filelock.c     userinfo rec;
userinfo           20 filelock.c     	fl.l_start=(n-1)*sizeof(userinfo); fl.l_len=sizeof(userinfo);
userinfo           27 filelock.c     	lseek(fd,(n-1)*sizeof(userinfo),SEEK_SET);
userinfo           37 filelock.c     	lseek(fd,-1*sizeof(userinfo),SEEK_CUR);