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 13 struct 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