?? stat.h
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include/sys/stat.h
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02300 /* The <sys/stat.h> header defines a struct that is used in the stat() and
02301 * fstat functions. The information in this struct comes from the i-node of
02302 * some file. These calls are the only approved way to inspect i-nodes.
02303 */
02304
02305 #ifndef _STAT_H
02306 #define _STAT_H
02307
02308 struct stat {
02309 dev_t st_dev; /* major/minor device number */
02310 ino_t st_ino; /* i-node number */
02311 mode_t st_mode; /* file mode, protection bits, etc. */
02312 short int st_nlink; /* # links; TEMPORARY HACK: should be nlink_t*/
02313 uid_t st_uid; /* uid of the file's owner */
02314 short int st_gid; /* gid; TEMPORARY HACK: should be gid_t */
02315 dev_t st_rdev;
02316 off_t st_size; /* file size */
02317 time_t st_atime; /* time of last access */
02318 time_t st_mtime; /* time of last data modification */
02319 time_t st_ctime; /* time of last file status change */
02320 };
02321
02322 /* Traditional mask definitions for st_mode. */
02323 /* The ugly casts on only some of the definitions are to avoid suprising sign
02324 * extensions such as S_IFREG != (mode_t) S_IFREG when ints are 32 bits.
02325 */
02326 #define S_IFMT ((mode_t) 0170000) /* type of file */
02327 #define S_IFREG ((mode_t) 0100000) /* regular */
02328 #define S_IFBLK 0060000 /* block special */
02329 #define S_IFDIR 0040000 /* directory */
02330 #define S_IFCHR 0020000 /* character special */
02331 #define S_IFIFO 0010000 /* this is a FIFO */
02332 #define S_ISUID 0004000 /* set user id on execution */
02333 #define S_ISGID 0002000 /* set group id on execution */
02334 /* next is reserved for future use */
02335 #define S_ISVTX 01000 /* save swapped text even after use */
02336
02337 /* POSIX masks for st_mode. */
02338 #define S_IRWXU 00700 /* owner: rwx------ */
02339 #define S_IRUSR 00400 /* owner: r-------- */
02340 #define S_IWUSR 00200 /* owner: -w------- */
02341 #define S_IXUSR 00100 /* owner: --x------ */
02342
02343 #define S_IRWXG 00070 /* group: ---rwx--- */
02344 #define S_IRGRP 00040 /* group: ---r----- */
02345 #define S_IWGRP 00020 /* group: ----w---- */
02346 #define S_IXGRP 00010 /* group: -----x--- */
02347
02348 #define S_IRWXO 00007 /* others: ------rwx */
02349 #define S_IROTH 00004 /* others: ------r-- */
02350 #define S_IWOTH 00002 /* others: -------w- */
02351 #define S_IXOTH 00001 /* others: --------x */
02352
02353 /* The following macros test st_mode (from POSIX Sec. 5.6.1.1). */
02354 #define S_ISREG(m) (((m) & S_IFMT) == S_IFREG) /* is a reg file */
02355 #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR) /* is a directory */
02356 #define S_ISCHR(m) (((m) & S_IFMT) == S_IFCHR) /* is a char spec */
02357 #define S_ISBLK(m) (((m) & S_IFMT) == S_IFBLK) /* is a block spec */
02358 #define S_ISFIFO(m) (((m) & S_IFMT) == S_IFIFO) /* is a pipe/FIFO */
02359
02360
02361 /* Function Prototypes. */
02362 #ifndef _ANSI_H
02363 #include <ansi.h>
02364 #endif
02365
02366 _PROTOTYPE( int chmod, (const char *_path, Mode_t _mode) );
02367 _PROTOTYPE( int fstat, (int _fildes, struct stat *_buf) );
02368 _PROTOTYPE( int mkdir, (const char *_path, Mode_t _mode) );
02369 _PROTOTYPE( int mkfifo, (const char *_path, Mode_t _mode) );
02370 _PROTOTYPE( int stat, (const char *_path, struct stat *_buf) );
02371 _PROTOTYPE( mode_t umask, (Mode_t _cmask) );
02372
02373 #endif /* _STAT_H */
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