-/* Copyright (C) 1991 Free Software Foundation, Inc.
-This file is part of the GNU C Library.
+/* Copyright (C) 1991, 92, 93, 94, 95, 96, 97 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 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.
+ 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 Free Software Foundation, Inc., 675 Mass Ave,
-Cambridge, MA 02139, USA. */
+ 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 Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
/*
* POSIX Standard: 5.1.2 Directory Operations <dirent.h>
*/
#ifndef _DIRENT_H
-
#define _DIRENT_H 1
+
#include <features.h>
-#include <gnu/types.h>
+__BEGIN_DECLS
-#define __need_size_t
-#include <stddef.h>
+#include <bits/types.h>
+/* This file defines `struct dirent'.
-/* Directory entry structure. */
-struct dirent
- {
- __ino_t d_fileno; /* File serial number. */
- size_t d_namlen; /* Length of the file name. */
+ It defines the macro `_DIRENT_HAVE_D_NAMLEN' iff there is a `d_namlen'
+ member that gives the length of `d_name'.
- /* Only this member is in the POSIX standard. */
- char d_name[1]; /* File name (actually longer). */
- };
+ It defines the macro `_DIRENT_HAVE_D_RECLEN' iff there is a `d_reclen'
+ member that gives the size of the entire directory entry.
+
+ It defines the macro `_DIRENT_HAVE_D_OFF' iff there is a `d_off'
+ member that gives the file offset of the next directory entry.
+
+ It defines the macro `_DIRENT_HAVE_D_TYPE' iff there is a `d_type'
+ member that gives the type of the file.
+ */
+
+#include <bits/dirent.h>
-#if defined(__USE_BSD) || defined(__USE_MISC)
-#define d_ino d_fileno /* Backward compatibility. */
+#if (defined __USE_BSD || defined __USE_MISC) && !defined d_fileno
+# define d_ino d_fileno /* Backward compatibility. */
#endif
-/* Directory stream type. */
-typedef struct
+/* These macros extract size information from a `struct dirent *'.
+ They may evaluate their argument multiple times, so it must not
+ have side effects. Each of these may involve a relatively costly
+ call to `strlen' on some systems, so these values should be cached.
+
+ _D_EXACT_NAMLEN (DP) returns the length of DP->d_name, not including
+ its terminating null character.
+
+ _D_ALLOC_NAMLEN (DP) returns a size at least (_D_EXACT_NAMLEN (DP) + 1);
+ that is, the allocation size needed to hold the DP->d_name string.
+ Use this macro when you don't need the exact length, just an upper bound.
+ This macro is less likely to require calling `strlen' than _D_EXACT_NAMLEN.
+ */
+
+#ifdef _DIRENT_HAVE_D_NAMLEN
+# define _D_EXACT_NAMLEN(d) ((d)->d_namlen)
+# define _D_ALLOC_NAMLEN(d) (_D_EXACT_NAMLEN (d) + 1)
+#else
+# define _D_EXACT_NAMLEN(d) (strlen ((d)->d_name))
+# ifdef _DIRENT_HAVE_D_RECLEN
+# define _D_ALLOC_NAMLEN(d) (((char *) (d) + (d)->d_reclen) - &(d)->d_name[0])
+# else
+# define _D_ALLOC_NAMLEN(d) (sizeof (d)->d_name > 1 ? sizeof (d)->d_name : \
+ _D_EXACT_NAMLEN (d) + 1)
+# endif
+#endif
+
+
+#ifdef __USE_BSD
+/* File types for `d_type'. */
+enum
{
- int __fd; /* File descriptor. */
+ DT_UNKNOWN = 0,
+# define DT_UNKNOWN DT_UNKNOWN
+ DT_FIFO = 1,
+# define DT_FIFO DT_FIFO
+ DT_CHR = 2,
+# define DT_CHR DT_CHR
+ DT_DIR = 4,
+# define DT_DIR DT_DIR
+ DT_BLK = 6,
+# define DT_BLK DT_BLK
+ DT_REG = 8,
+# define DT_REG DT_REG
+ DT_LNK = 10,
+# define DT_LNK DT_LNK
+ DT_SOCK = 12
+# define DT_SOCK DT_SOCK
+ };
- char *__data; /* Directory block. */
- size_t __allocation; /* Space allocated for the block. */
- size_t __offset; /* Current offset into the block. */
- size_t __size; /* Total valid data in the block. */
+/* Convert between stat structure types and directory types. */
+# define IFTODT(mode) (((mode) & 0170000) >> 12)
+# define DTTOIF(dirtype) ((dirtype) << 12)
+#endif
- struct dirent __entry; /* Returned by `readdir'. */
- } DIR;
+/* This is the data type of directory stream objects.
+ The actual structure is opaque to users. */
+typedef struct __dirstream DIR;
/* Open a directory stream on NAME.
Return a DIR stream on the directory, or NULL if it could not be opened. */
-extern DIR *EXFUN(opendir, (CONST char *__name));
+extern DIR *__opendir __P ((__const char *__name));
+extern DIR *opendir __P ((__const char *__name));
/* Close the directory stream DIRP.
Return 0 if successful, -1 if not. */
-extern int EXFUN(closedir, (DIR *__dirp));
+extern int __closedir __P ((DIR *__dirp));
+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.
+
+ If the Large File Support API is selected we have to use the
+ appropriate interface. */
+extern struct dirent *__readdir __P ((DIR *__dirp));
+#ifndef __USE_FILE_OFFSET64
+extern struct dirent *readdir __P ((DIR *__dirp));
+#else
+extern struct dirent *readdir __P ((DIR *__dirp)) __asm__ ("readdir64");
+#endif
+
+#ifdef __USE_LARGEFILE64
+extern struct dirent64 *readdir64 __P ((DIR *__dirp));
+#endif
-/* 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 *EXFUN(readdir, (DIR *__dirp));
+#if defined __USE_POSIX || defined __USE_MISC
+/* Reentrant version of `readdir'. Return in RESULT a pointer to the
+ next entry. */
+extern int __readdir_r __P ((DIR *__dirp, struct dirent *__entry,
+ struct dirent **__result));
+# ifndef __USE_FILE_OFFSET64
+extern int readdir_r __P ((DIR *__dirp, struct dirent *__entry,
+ struct dirent **__result));
+# else
+extern int readdir_r __P ((DIR *__dirp, struct dirent *__entry,
+ struct dirent **__result))
+ __asm__ ("readdir64_r");
+# endif
+
+# ifdef __USE_LARGEFILE64
+extern int readdir64_r __P ((DIR *__dirp, struct dirent64 *__entry,
+ struct dirent64 **__result));
+# endif
+#endif /* POSIX or misc */
/* Rewind DIRP to the beginning of the directory. */
-extern void EXFUN(rewinddir, (DIR *__dirp));
+extern void rewinddir __P ((DIR *__dirp));
-#if defined(__USE_BSD) || defined(__USE_MISC)
+#if defined __USE_BSD || defined __USE_MISC || defined __USE_XOPEN
+# include <bits/types.h>
-#ifndef MAXNAMLEN
-/* Get the definitions of the POSIX.1 limits. */
-#include <posix1_lim.h>
+/* Seek to position POS on DIRP. */
+extern void seekdir __P ((DIR *__dirp, __off_t __pos));
-/* `MAXNAMLEN' is the BSD name for what POSIX calls `NAME_MAX'. */
-#ifdef NAME_MAX
-#define MAXNAMLEN NAME_MAX
-#else
-#define MAXNAMLEN 255
-#endif
+/* Return the current position of DIRP. */
+extern __off_t telldir __P ((DIR *__dirp));
#endif
-#include <gnu/types.h>
-
-/* Seek to position POS on DIRP. */
-extern void EXFUN(seekdir, (DIR *__dirp, __off_t __pos));
+#if defined __USE_BSD || defined __USE_MISC
-/* Return the current position of DIRP. */
-extern __off_t EXFUN(telldir, (DIR *__dirp));
+/* Return the file descriptor used by DIRP. */
+extern int dirfd __P ((DIR *__dirp));
-#endif /* Use BSD or misc. */
+# if defined __OPTIMIZE__ && defined _DIR_dirfd
+# define dirfd(dirp) _DIR_dirfd (dirp)
+# endif
+# ifndef MAXNAMLEN
+/* Get the definitions of the POSIX.1 limits. */
+# include <bits/posix1_lim.h>
-#endif /* dirent.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
+
+# define __need_size_t
+# include <stddef.h>
+
+/* Scan the directory DIR, calling SELECTOR 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 (*__selector) __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));
+
+# ifdef __USE_GNU
+/* Function to compare two `struct dirent's by name & version. */
+extern int versionsort __P ((__const __ptr_t, __const __ptr_t));
+# endif
+
+/* 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 */
projects / kopensolaris-gnu / glibc.git / blobdiff