1/* The <sys/stat.h> header defines a struct that is used in the stat() and
2 * fstat functions.  The information in this struct comes from the i-node of
3 * some file.  These calls are the only approved way to inspect i-nodes.
4 */
5
6#ifndef _STAT_H
7#define _STAT_H
8
9#ifndef _TYPES_H		/* not quite right */
10#include <sys/types.h>
11#endif
12
13struct stat {
14  dev_t st_dev;			/* major/minor device number */
15  ino_t st_ino;			/* i-node number */
16  mode_t st_mode;		/* file mode, protection bits, etc. */
17  short int st_nlink;		/* # links; TEMPORARY HACK: should be nlink_t*/
18  uid_t st_uid;			/* uid of the file's owner */
19  short int st_gid;		/* gid; TEMPORARY HACK: should be gid_t */
20  dev_t st_rdev;
21  off_t st_size;		/* file size */
22  time_t st_atime;		/* time of last access */
23  time_t st_mtime;		/* time of last data modification */
24  time_t st_ctime;		/* time of last file status change */
25};
26
27/* Traditional mask definitions for st_mode. */
28#define S_IFMT  0170000		/* type of file */
29#define S_IFREG 0100000		/* regular */
30#define S_IFBLK 0060000		/* block special */
31#define S_IFDIR 0040000  	/* directory */
32#define S_IFCHR 0020000		/* character special */
33#define S_IFIFO 0010000		/* this is a FIFO */
34#define S_ISUID 0004000		/* set user id on execution */
35#define S_ISGID 0002000		/* set group id on execution */
36				/* next is reserved for future use */
37#define S_ISVTX   01000		/* save swapped text even after use */
38
39/* POSIX masks for st_mode. */
40#define S_IRWXU   00700		/* owner:  rwx------ */
41#define S_IRUSR   00400		/* owner:  r-------- */
42#define S_IWUSR   00200		/* owner:  -w------- */
43#define S_IXUSR   00100		/* owner:  --x------ */
44
45#define S_IRWXG   00070		/* group:  ---rwx--- */
46#define S_IRGRP   00040		/* group:  ---r----- */
47#define S_IWGRP   00020		/* group:  ----w---- */
48#define S_IXGRP   00010		/* group:  -----x--- */
49
50#define S_IRWXO   00007		/* others: ------rwx */
51#define S_IROTH   00004		/* others: ------r-- */
52#define S_IWOTH   00002		/* others: -------w- */
53#define S_IXOTH   00001		/* others: --------x */
54
55/* The following macros test st_mode (from POSIX Sec. 5.6.1.1. */
56#define S_ISREG(m)	((m & S_IFMT) == S_IFREG)	/* is a reg file */
57#define S_ISDIR(m)	((m & S_IFMT) == S_IFDIR)	/* is a directory */
58#define S_ISCHR(m)	((m & S_IFMT) == S_IFCHR)	/* is a char spec */
59#define S_ISBLK(m)	((m & S_IFMT) == S_IFBLK)	/* is a block spec */
60#define S_ISFIFO(m)	((m & S_IFMT) == S_IFIFO)	/* is a pipe/FIFO */
61
62
63/* Function Prototypes. */
64#ifndef _ANSI_H
65#include <ansi.h>
66#endif
67
68_PROTOTYPE( int chmod, (const char *_path, int _mode)			);
69_PROTOTYPE( int fstat, (int _fildes, struct stat *_buf)			);
70_PROTOTYPE( int mkdir, (const char *_path, int _mode)			);
71_PROTOTYPE( int mkfifo, (const char *_path, int _mode)			);
72_PROTOTYPE( int stat , (const char *_path, struct stat *_buf)		);
73_PROTOTYPE( mode_t umask, (int _cmask)					);
74
75#endif /* _STAT_H */
76