filebuf = malloc(sizeof(*envptr) * filesize);
ret = read(txt_fd, filebuf, sizeof(*envptr) * filesize);
if (ret != sizeof(*envptr) * filesize) {
filebuf = malloc(sizeof(*envptr) * filesize);
ret = read(txt_fd, filebuf, sizeof(*envptr) * filesize);
if (ret != sizeof(*envptr) * filesize) {