#ifndef _SYS_STAT_H#define _SYS_STAT_H #include <sys/types.h> struct stat{	dev_t	st_dev;		// Device ID of device containing file. 	ino_t	st_ino;		// File serial number. 	mode_t	st_mode;	// Mode of file.	nlink_t	st_nlink;	// Number of hard links to the file. 	uid_t	st_uid;		// User ID of file. 	gid_t	st_gid;		// Group ID of file. 	dev_t	st_rdev;	// Device ID for device special file.	blksize_t st_blksize;	// Size of blocks in this file	blkcnt_t st_blocks;	// Number of blocks allocated for this file	off_t	st_size;	// File size in bytes.	time_t	st_atime;	// Time of last access. 	time_t	st_mtime;	// Time of last data modification. 	time_t	st_ctime;	// Time of last status change. };  // File mode bits - matching vx/env.h#define S_IFMT		070000		// File type bit mask#define S_IFNULL	000000		// Unused inode#define S_IFREG		010000		// Regular file#define S_IFDIR		020000		// Directory#define S_IFLNK		030000		// Symbolic link#define S_IFSOCK	040000		// Socket#define S_IFIFO		050000		// FIFO#define S_IFBLK		060000		// Block device#define S_IFCHR		070000		// Character device #define S_ISREG(m)	(((m) & S_IFMT) == S_IFREG)#define S_ISDIR(m)	(((m) & S_IFMT) == S_IFDIR)#define S_ISLNK(m)	(((m) & S_IFMT) == S_IFLNK)#define S_ISSOCK(m)	(((m) & S_IFMT) == S_IFSOCK)#define S_ISFIFO(m)	(((m) & S_IFMT) == S_IFIFO)#define S_ISBLK(m)	(((m) & S_IFMT) == S_IFBLK)#define S_ISCHR(m)	(((m) & S_IFMT) == S_IFCHR) #define S_ISUID		004000#define S_ISGID		002000#define S_ISVTX		001000 #define S_IRWXU		000700#define S_IRUSR		000400#define S_IWUSR		000200#define S_IXUSR		000100                         #define S_IRWXG		000070#define S_IRGRP		000040#define S_IWGRP		000020#define S_IXGRP		000010                         #define S_IRWXO		000007#define S_IROTH		000004#define S_IWOTH		000002#define S_IXOTH		000001 #define	DEFFILEMODE	(S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH) int stat(const char *file_name, struct stat *buf);int fstat(int filedes, struct stat *buf);int lstat(const char *file_name, struct stat *buf); int chmod(const char *path, mode_t mode);int fchmod(int fd, mode_t mode); int mkdir(const char *path, mode_t mode);int mkfifo(const char *path, mode_t mode);int mknod(const char *path, mode_t mode); mode_t umask(mode_t cmask);  #endif	// _SYS_STAT_H