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- /* Copyright (C) 1991, 1992 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>
- #define __need_size_t
- #include <stddef.h>
- #include <sys/types.h>
- #include <linux/limits.h>
- #include <linux/dirent.h>
- #if defined(__USE_GNU)
- #define d_fileno d_ino /* glibc compatibility. */
- #if 0
- #define d_namlen d_reclen /* glibc compatibility. */
- #endif
- #endif
- #if defined(DIRENT_ILLEGAL_ACCESS) || \
- (defined(__SVR4_I386_ABI_L1__) && !defined(INTERNAL_LINUX_C_LIB))
- /* Use it at your own risk. */
- typedef struct DIR
- {
- /* file descriptor */
- int dd_fd;
- /* offset of the next dir entry in buffer */
- off_t dd_loc;
- /* bytes of valid entries in buffer */
- size_t dd_size;
- /* -> directory buffer */
- struct dirent *dd_buf;
- } DIR;
- #else
- /* The internal is hidden from the user. */
- typedef struct DIR DIR;
- #endif
- /* 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>
- /* 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));
- typedef int (*__dir_select_fn_t) __P ((__const struct dirent *));
- typedef int (*__dir_compar_fn_t) __P ((
- __const struct dirent * __const *,
- __const struct dirent * __const *
- ));
- /* 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,
- __dir_select_fn_t __dir_select_fn,
- __dir_compar_fn_t __dir_compar_fn));
- /* Function to compare two `struct dirent's alphabetically. */
- extern int alphasort __P ((
- __const struct dirent * __const *,
- __const struct dirent * __const *
- ));
- /* 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));
- extern int dirfd __P ((DIR *__dirp));
- #endif /* Use BSD or misc. */
- #if defined(_POSIX_THREAD_SAFE_FUNCTIONS) || defined(_REENTRANT)
- extern int readdir_r __P((DIR *__dirp, struct dirent *__entry,
- struct dirent **__result));
- #endif
- __END_DECLS
- #endif /* dirent.h */
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