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.
9 #ifndef _TYPES_H /* not quite right */
10 #include <sys/types.h>
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 */
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 */
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 */
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------ */
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--- */
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 */
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 */
63 /* Function Prototypes. */
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
) );
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