CK_READ
if (chkpth(filename, CK_READ) || !F_READANY(fileno(fp))) {
else if (chkpth(infile, CK_READ) == FAIL) {
if (flag == CK_READ)
if (chkpth(ffile, CK_READ) == FAIL)
chkpth(tfull, CK_READ) == FAIL)
if (chkpth(file, CK_READ) == FAIL ||
if (chkpth(fin, CK_READ)) {