/* The 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 #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 */