75 lines
2.9 KiB
C
75 lines
2.9 KiB
C
|
/* The <sys/stat.h> header defines a struct that is used in the stat() and
|
||
|
|
* fstat functions. The information in this struct comes from the i-node of
|
||
|
|
* some file. These calls are the only approved way to inspect i-nodes.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef _STAT_H
|
||
|
|
#define _STAT_H
|
||
|
|
|
||
|
|
#ifndef _TYPES_H
|
||
|
|
#include <sys/types.h>
|
||
|
|
#endif
|
||
|
|
|
||
|
|
struct stat {
|
||
|
|
dev_t st_dev; /* major/minor device number */
|
||
|
|
ino_t st_ino; /* i-node number */
|
||
|
|
mode_t st_mode; /* file mode, protection bits, etc. */
|
||
|
|
short int st_nlink; /* # links; TEMPORARY HACK: should be nlink_t*/
|
||
|
|
uid_t st_uid; /* uid of the file's owner */
|
||
|
|
short int st_gid; /* gid; TEMPORARY HACK: should be gid_t */
|
||
|
|
dev_t st_rdev;
|
||
|
|
off_t st_size; /* file size */
|
||
|
|
time_t st_atime; /* time of last access */
|
||
|
|
time_t st_mtime; /* time of last data modification */
|
||
|
|
time_t st_ctime; /* time of last file status change */
|
||
|
|
};
|
||
|
|
|
||
|
|
/* Traditional mask definitions for st_mode. */
|
||
|
|
/* The ugly casts on only some of the definitions are to avoid suprising sign
|
||
|
|
* extensions such as S_IFREG != (mode_t) S_IFREG when ints are 32 bits.
|
||
|
|
*/
|
||
|
|
#define S_IFMT ((mode_t) 0170000) /* type of file */
|
||
|
|
#define S_IFREG ((mode_t) 0100000) /* regular */
|
||
|
|
#define S_IFBLK 0060000 /* block special */
|
||
|
|
#define S_IFDIR 0040000 /* directory */
|
||
|
|
#define S_IFCHR 0020000 /* character special */
|
||
|
|
#define S_IFIFO 0010000 /* this is a FIFO */
|
||
|
|
#define S_ISUID 0004000 /* set user id on execution */
|
||
|
|
#define S_ISGID 0002000 /* set group id on execution */
|
||
|
|
/* next is reserved for future use */
|
||
|
|
#define S_ISVTX 01000 /* save swapped text even after use */
|
||
|
|
|
||
|
|
/* POSIX masks for st_mode. */
|
||
|
|
#define S_IRWXU 00700 /* owner: rwx------ */
|
||
|
|
#define S_IRUSR 00400 /* owner: r-------- */
|
||
|
|
#define S_IWUSR 00200 /* owner: -w------- */
|
||
|
|
#define S_IXUSR 00100 /* owner: --x------ */
|
||
|
|
|
||
|
|
#define S_IRWXG 00070 /* group: ---rwx--- */
|
||
|
|
#define S_IRGRP 00040 /* group: ---r----- */
|
||
|
|
#define S_IWGRP 00020 /* group: ----w---- */
|
||
|
|
#define S_IXGRP 00010 /* group: -----x--- */
|
||
|
|
|
||
|
|
#define S_IRWXO 00007 /* others: ------rwx */
|
||
|
|
#define S_IROTH 00004 /* others: ------r-- */
|
||
|
|
#define S_IWOTH 00002 /* others: -------w- */
|
||
|
|
#define S_IXOTH 00001 /* others: --------x */
|
||
|
|
|
||
|
|
/* The following macros test st_mode (from POSIX Sec. 5.6.1.1). */
|
||
|
|
#define S_ISREG(m) (((m) & S_IFMT) == S_IFREG) /* is a reg file */
|
||
|
|
#define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR) /* is a directory */
|
||
|
|
#define S_ISCHR(m) (((m) & S_IFMT) == S_IFCHR) /* is a char spec */
|
||
|
|
#define S_ISBLK(m) (((m) & S_IFMT) == S_IFBLK) /* is a block spec */
|
||
|
|
#define S_ISFIFO(m) (((m) & S_IFMT) == S_IFIFO) /* is a pipe/FIFO */
|
||
|
|
|
||
|
|
|
||
|
|
/* Function Prototypes. */
|
||
|
|
_PROTOTYPE( int chmod, (const char *_path, Mode_t _mode) );
|
||
|
|
_PROTOTYPE( int fstat, (int _fildes, struct stat *_buf) );
|
||
|
|
_PROTOTYPE( int mkdir, (const char *_path, Mode_t _mode) );
|
||
|
|
_PROTOTYPE( int mkfifo, (const char *_path, Mode_t _mode) );
|
||
|
|
_PROTOTYPE( int stat, (const char *_path, struct stat *_buf) );
|
||
|
|
_PROTOTYPE( mode_t umask, (Mode_t _cmask) );
|
||
|
|
|
||
|
|
#endif /* _STAT_H */
|