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Diffstat (limited to 'dirent/dirent.h')
| -rw-r--r-- | dirent/dirent.h | 149 |
1 files changed, 149 insertions, 0 deletions
diff --git a/dirent/dirent.h b/dirent/dirent.h new file mode 100644 index 0000000000..b102a4786c --- /dev/null +++ b/dirent/dirent.h @@ -0,0 +1,149 @@ +/* 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 */ |