#ifndef ISO constant C_IRUSR 0000400 constant C_IWUSR 0000200 constant C_IXUSR 0000100 constant C_IRGRP 0000040 constant C_IWGRP 0000020 constant C_IXGRP 0000010 constant C_IROTH 0000004 constant C_IWOTH 0000002 constant C_IXOTH 0000001 constant C_ISUID 0004000 constant C_ISGID 0002000 constant C_ISVTX 0001000 constant C_ISDIR 0040000 constant C_ISFIFO 0010000 constant C_ISREG 0100000 constant C_ISBLK 0060000 constant C_ISCHR 0020000 constant C_ISCTG 0110000 constant C_ISLNK 0120000 constant C_ISSOCK 0140000 constant MAGIC #endif