struct	stat{	dev_t	st_dev;	ino_t	st_ino;	unsigned short st_mode;	short	st_nlink;	short  	st_uid;	short  	st_gid;	dev_t	st_rdev;	off_t	st_size;	time_t	st_atime;	time_t	st_mtime;	time_t	st_ctime;};#define	S_IFMT	0170000		/* type of file */#define		S_IFDIR	0040000	/* directory */#define		S_IFCHR	0020000	/* character special */#define		S_IFBLK	0060000	/* block special */#define		S_IFREG	0100000	/* regular */#define		S_IFMPC	0030000	/* multiplexed char special */#define		S_IFMPB	0070000	/* multiplexed block special */#define	S_ISUID	0004000		/* set user id on execution */#define	S_ISGID	0002000		/* set group id on execution */#define	S_ISVTX	0001000		/* save swapped text even after use */#define	S_IREAD	0000400		/* read permission, owner */#define	S_IWRITE	0000200		/* write permission, owner */#define	S_IEXEC	0000100		/* execute/search permission, owner */