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- /* Copyright (C) 1991, 1992, 1993, 1994 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
-
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Library General Public License as
- published by the Free Software Foundation; either version 2 of the
- License, or (at your option) any later version.
-
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Library General Public License for more details.
-
- You should have received a copy of the GNU Library General Public
- License along with the GNU C Library; see the file COPYING.LIB. If
- not, write to the, 1992 Free Software Foundation, Inc., 675 Mass Ave,
- Cambridge, MA 02139, USA. */
-
- /*
- * POSIX Standard: 5.1.2 Directory Operations <dirent.h>
- */
-
- #ifndef _DIRENT_H
-
- #define _DIRENT_H 1
- #include <features.h>
-
- __BEGIN_DECLS
-
- #include <gnu/types.h>
-
-
- /* Directory entry structure.
-
- This structure is laid out identically to the `struct direct' that
- represents directory entries in the GNU Hurd and in BSD 4.4 (and
- incidentally, on disk in the Berkeley fast file system). The `readdir'
- implementations for GNU and BSD know this; you must change them if you
- change this structure. */
-
- struct dirent
- {
- __ino_t d_fileno; /* File serial number. */
- unsigned short int d_reclen; /* Length of the whole `struct dirent'. */
- unsigned char d_type; /* File type, possibly unknown. */
- unsigned char d_namlen; /* Length of the file name. */
-
- /* Only this member is in the POSIX standard. */
- char d_name[1]; /* File name (actually longer). */
- };
-
- #if defined(__USE_BSD) || defined(__USE_MISC)
- #define d_ino d_fileno /* Backward compatibility. */
- #endif
-
- #ifdef __USE_BSD
- /* File types for `d_type'. */
- enum
- {
- DT_UNKNOWN = 0,
- DT_FIFO = 1,
- DT_CHR = 2,
- DT_DIR = 4,
- DT_BLK = 6,
- DT_REG = 8,
- DT_LNK = 10,
- DT_SOCK = 12
- };
-
- /* Convert between stat structure types and directory types. */
- #define IFTODT(mode) (((mode) & 0170000) >> 12)
- #define DTTOIF(dirtype) ((dirtype) << 12)
- #endif
-
-
- /* Get the system-dependent definition of `DIR',
- the data type of directory stream objects. */
- #include <dirstream.h>
-
- /* Open a directory stream on NAME.
- Return a DIR stream on the directory, or NULL if it could not be opened. */
- extern DIR *opendir __P ((__const char *__name));
-
- /* Close the directory stream DIRP.
- Return 0 if successful, -1 if not. */
- extern int closedir __P ((DIR * __dirp));
-
- /* Read a directory entry from DIRP.
- Return a pointer to a `struct dirent' describing the entry,
- or NULL for EOF or error. The storage returned may be overwritten
- by a later readdir call on the same DIR stream. */
- extern struct dirent *readdir __P ((DIR * __dirp));
-
- /* Rewind DIRP to the beginning of the directory. */
- extern void rewinddir __P ((DIR * __dirp));
-
- #if defined(__USE_BSD) || defined(__USE_MISC)
-
- #ifndef MAXNAMLEN
- /* Get the definitions of the POSIX.1 limits. */
- #include <posix1_lim.h>
-
- /* `MAXNAMLEN' is the BSD name for what POSIX calls `NAME_MAX'. */
- #ifdef NAME_MAX
- #define MAXNAMLEN NAME_MAX
- #else
- #define MAXNAMLEN 255
- #endif
- #endif
-
- #include <gnu/types.h>
- #define __need_size_t
- #include <stddef.h>
-
- /* Seek to position POS on DIRP. */
- extern void seekdir __P ((DIR * __dirp, __off_t __pos));
-
- /* Return the current position of DIRP. */
- extern __off_t telldir __P ((DIR * __dirp));
-
- /* Scan the directory DIR, calling SELECT on each directory entry.
- Entries for which SELECT returns nonzero are individually malloc'd,
- sorted using qsort with CMP, and collected in a malloc'd array in
- *NAMELIST. Returns the number of entries selected, or -1 on error. */
- extern int scandir __P ((__const char *__dir,
- struct dirent ***__namelist,
- int (*__select) __P ((struct dirent *)),
- int (*__cmp) __P ((__const __ptr_t,
- __const __ptr_t))));
-
- /* Function to compare two `struct dirent's alphabetically. */
- extern int alphasort __P ((__const __ptr_t, __const __ptr_t));
-
-
- /* Read directory entries from FD into BUF, reading at most NBYTES.
- Reading starts at offset *BASEP, and *BASEP is updated with the new
- position after reading. Returns the number of bytes read; zero when at
- end of directory; or -1 for errors. */
- extern __ssize_t __getdirentries __P ((int __fd, char *__buf,
- size_t __nbytes, __off_t *__basep));
- extern __ssize_t getdirentries __P ((int __fd, char *__buf,
- size_t __nbytes, __off_t *__basep));
-
-
- #endif /* Use BSD or misc. */
-
- __END_DECLS
-
- #endif /* dirent.h */
-