stat.h

T-kernel 的extension源代码

/*
 *----------------------------------------------------------------------
 *    T-Kernel / Standard Extension
 *
 *    Copyright (C) 2006 by Ken Sakamura. All rights reserved.
 *    T-Kernel / Standard Extension is distributed 
 *      under the T-License for T-Kernel / Standard Extension.
 *----------------------------------------------------------------------
 *
 *    Version:   1.00.00
 *    Released by T-Engine Forum(http://www.t-engine.org) at 2006/8/11.
 *
 *----------------------------------------------------------------------
 */

/*
 *	stat.h
 *
 */

#ifndef	__STDFILE_SYS_STAT_H__
#define	__STDFILE_SYS_STAT_H__

#include "time.h"


#ifdef __cplusplus
extern "C" {
#endif

/*
 * File information
 */
struct stat {
	dev_t		st_dev;			/* Device ID */
	ino_t		st_ino;			/* File serial number */
	mode_t		st_mode;		/* File mode */
	nlink_t		st_nlink;		/* Number of links */
	uid_t		st_uid;			/* Owner ID */
	gid_t		st_gid;			/* Group ID */
	dev_t		st_rdev;		/* Device type */
	struct timespec	st_atimespec;		/* Time of latest access */
	struct timespec	st_mtimespec;		/* Time of latest update */
	struct timespec	st_ctimespec;		/* Time of latest file state update */
	off_t		st_size;		/* File size (number of bytes) */
	int64_t		st_blocks;		/* Number of blocks allocated to file */
	u_int32_t	st_blksize;		/* Block size (number of bytes) */
	u_int32_t	st_flags;		/* User-defined flag */
	u_int32_t	st_gen;			/* File generation number */
	int32_t		st_lspare;		/* (Reserved) */
	int64_t		st_qspare[2];		/* (Reserved) */
};
#define	st_atime	st_atimespec.tv_sec
#define	st_mtime	st_mtimespec.tv_sec
#define	st_ctime	st_ctimespec.tv_sec

#define	S_BLKSIZE	512			/* Block size (number of bytes)
						   to be used in st_blocks */

/*
 * File mode (st_mode)
 */
#define	S_IRWXU		0x01C0U			/* 0000700 Owner RWX mask */
#define	S_IRUSR		0x0100U			/* 0000400 Owner R read enable */
#define	S_IWUSR		0x0080U			/* 0000200 Owner W write enable*/
#define	S_IXUSR		0x0040U			/* 0000100 Owner X execution enable */

#define	S_IRWXG		0x0038U			/* 0000070 Group RWX mask */
#define	S_IRGRP		0x0020U			/* 0000040 Group R read enable */
#define	S_IWGRP		0x0010U			/* 0000020 Group W write enable */
#define	S_IXGRP		0x0008U			/* 0000010 Group X execution enable */

#define	S_IRWXO		0x0007U			/* 0000007 Other RWX mask */
#define	S_IROTH		0x0004U			/* 0000004 Other R read enable */
#define	S_IWOTH		0x0002U			/* 0000002 Other W write enable */
#define	S_IXOTH		0x0001U			/* 0000001 Other X execution enable */

#define	S_ISUID		0x0800U			/* 0004000 Runtime user ID setting */
#define	S_ISGID		0x0400U			/* 0002000 Runtime group ID setting */
#define	S_ISVTX		0x0200U			/* 0001000 Sticky bit */

#define	S_IFMT		0xF000U			/* 0170000 File type mask */
#define	S_IFIFO		0x1000U			/* 0010000 Name pipe (FIFO) */
#define	S_IFCHR		0x2000U			/* 0020000 Character-type special file */
#define	S_IFDIR		0x4000U			/* 0040000 Directory */
#define	S_IFBLK		0x6000U			/* 0060000 Block-type special file */
#define	S_IFREG		0x8000U			/* 0100000 Normal file */
#define	S_IFLNK		0xA000U			/* 0120000 Symbolic link */
#define	S_IFSOCK	0xC000U			/* 0140000 Socket */


#define	S_ISFIFO(m)	( ((m) & S_IFMT) == S_IFIFO )
#define	S_ISCHR(m)	( ((m) & S_IFMT) == S_IFCHR )
#define	S_ISDIR(m)	( ((m) & S_IFMT) == S_IFDIR )
#define	S_ISBLK(m)	( ((m) & S_IFMT) == S_IFBLK )
#define	S_ISREG(m)	( ((m) & S_IFMT) == S_IFREG )
#define	S_ISLNK(m)	( ((m) & S_IFMT) == S_IFLNK )
#define	S_ISSOCK(m)	( ((m) & S_IFMT) == S_IFSOCK )

/*
 * User-defined flag (st_flags)
 */
#define	SF_ARCHIVED	0x00010000U		/* Archive file */
#define	SF_SYSTEM	0x40000000U		/* System file */
#define	SF_HIDDEN	0x80000000U		/* Hidden file */

/*
 * System call
 */
extern int	mkdir( const char *path, mode_t mode );
extern int	stat( const char *path, struct stat *sb );
extern int	lstat( const char *path, struct stat *sb );
extern int	fstat( int fildes, struct stat *sb );
extern int	chmod( const char *path, mode_t mode );
extern int	fchmod( int fd, mode_t mode );
extern mode_t	umask( mode_t cmask );

#ifdef __cplusplus
}
#endif
#endif /* __STDFILE_SYS_STAT_H__ */