* sysdeps/unix/dirstream.h: Rewritten.
* sysdeps/unix/readdir.c: Rewritten.
* sysdeps/unix/telldir.c: Rewritten.
* sysdeps/unix/closedir.c: Use <...> instead of "..." for dirstream.h.
Remove __ from DIR struct member names.
* sysdeps/unix/dirfd.c: Likewise.
* sysdeps/unix/seekdir.c: Likewise.
* sysdeps/unix/rewinddir.c: Likewise.
* sysdeps/unix/opendir.c: Likewise. Don't allocate extra space after
DIR structure.
* sysdeps/stub/direct.h: File removed.
* sysdeps/unix/bsd/bsd4.4/direct.h: File removed.
* sysdeps/unix/bsd/direct.h: File removed.
* sysdeps/unix/common/direct.h: File removed.
* sysdeps/unix/sysv/irix4/direct.h: File removed.
* sysdeps/unix/sysv/isc3/direct.h: File removed.
* sysdeps/unix/sysv/sco3.2.4/direct.h: File removed.
* sysdeps/unix/sysv/sysv4/solaris2/direct.h: File removed.
* sysdeps/unix/common/direntry.h: New file.
* sysdeps/unix/bsd/direntry.h: New file.
* sysdeps/unix/bsd/bsd4.4/direntry.h: New file.
* sysdeps/unix/sysv/direntry.h: New file.
* sysdeps/stub/direntry.h: New file.
* dirent/dirent.h (struct dirent): Type removed. Include <direntry.h>
to define it.
(_D_EXACT_NAMLEN, _D_ALLOC_NAMLEN): New macros.
* dirent/Makefile (headers): Add direntry.h.
(distribute): Remove direct.h.
* sysdeps/posix/getcwd.c: Use new macros instead of d_namlen.
* dirent/scandir.c: Likewise.
* io/fts.c (fts_build): Likewise.
* io/ftw.c (ftw_dir): Likewise.
* sysdeps/posix/ttyname.c: Likewise.
-# Copyright (C) 1991, 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
+# Copyright (C) 1991, 92, 93, 94, 95, 96 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
#
subdir := dirent
-headers := dirent.h
+headers := dirent.h direntry.h
routines := opendir closedir readdir rewinddir \
seekdir telldir scandir alphasort \
getdents dirfd
-distribute := direct.h dirstream.h
+distribute := dirstream.h
tests := list tst-seekdir
-/* Copyright (C) 1991, 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
+/* Copyright (C) 1991, 92, 93, 94, 95, 96 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
#include <gnu/types.h>
+/* This file defines `struct dirent'.
-/* Directory entry structure.
+ It defines the macro `_DIRENT_HAVE_D_NAMLEN' iff there is a `d_namlen'
+ member that gives the length of `d_name'.
- 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. */
+ It defines the macro `_DIRENT_HAVE_D_RECLEN' iff there is a `d_reclen'
+ member that gives the size of the entire directory entry. */
-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). */
- };
+#include <direntry.h>
#if defined(__USE_BSD) || defined(__USE_MISC)
#define d_ino d_fileno /* Backward compatibility. */
#endif
+/* 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
v = new;
}
- dsize = &d->d_name[d->d_namlen + 1] - (char *) d;
+ dsize = &d->d_name[_D_ALLOC_NAMLEN (d)] - (char *) d;
v[i] = (struct dirent *) malloc (dsize);
if (v[i] == NULL)
goto lose;
--- /dev/null
+/* Directory entry structure `struct dirent'. 4.2BSD version.
+Copyright (C) 1996 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 Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA. */
+
+struct dirent
+ {
+ unsigned int d_fileno; /* 32 bits. */
+ unsigned short int d_reclen; /* 16 bits. */
+ unsigned short int d_namlen; /* 16 bits. */
+ char d_name[0]; /* Variable length. */
+ };
+
+#define _DIRENT_HAVE_D_RECLEN 1
+#define _DIRENT_HAVE_D_NAMLEN 1
--- /dev/null
+/* Directory entry structure `struct dirent'. SVR4/Linux version.
+Copyright (C) 1996 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 Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA. */
+
+struct dirent
+ {
+ unsigned int d_fileno;
+ int d_off; /* Position in directory of following entry. */
+ unsigned short int d_reclen;
+ char d_name[0]; /* Variable length. */
+ };
+
+#define _DIRENT_HAVE_D_RECLEN 1
+#define _DIRENT_HAVE_D_OFF 1
dirfd (dirp)
DIR *dirp;
{
- return dirp->__fd;
+ return dirp->fd;
}
-/* Copyright (C) 1993, 1995 Free Software Foundation, Inc.
+/* Copyright (C) 1993, 1995, 1996 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
#define _DIRSTREAM_H 1
-#define __need_size_t
-#include <stddef.h>
+#include <sys/types.h>
/* Directory stream type.
The miscellaneous Unix `readdir' implementations read directory data
- into a buffer and fill in a `struct dirent' copy in the `DIR' object. */
+ into a buffer and return `struct dirent *' pointers into it. */
struct __dirstream
{
- int __fd; /* File descriptor. */
+ int fd; /* File descriptor. */
- 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. */
+ char *data; /* Directory block. */
+ size_t allocation; /* Space allocated for the block. */
+ size_t size; /* Total valid data in the block. */
+ size_t offset; /* Current offset into the block. */
- struct dirent __entry; /* Returned by `readdir'. */
+ off_t filepos; /* Position of next entry to read. */
};
-#define _DIR_dirfd(dirp) ((dirp)->__fd)
+#define _DIR_dirfd(dirp) ((dirp)->fd)
#endif /* dirstream.h */
-/* Copyright (C) 1991, 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
+/* Copyright (C) 1991, 92, 93, 94, 95, 96 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
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
Cambridge, MA 02139, USA. */
-#include <ansidecl.h>
#include <errno.h>
#include <limits.h>
#include <stddef.h>
#include <unistd.h>
#include <stdio.h>
-#include "direct.h" /* This file defines `struct direct'. */
-#include "dirstream.h"
+#include <dirstream.h>
/* Open a directory stream on NAME. */
DIR *
-DEFUN(opendir, (name), CONST char *name)
+opendir (const char *name)
{
DIR *dirp;
struct stat statbuf;
goto lose;
}
- dirp = (DIR *) calloc (1, sizeof (DIR) + NAME_MAX); /* Zero-fill. */
+ dirp = (DIR *) calloc (1, sizeof (DIR)); /* Zero-fill. */
if (dirp == NULL)
lose:
{
}
#ifdef _STATBUF_ST_BLKSIZE
- if (statbuf.st_blksize < sizeof (struct direct))
- dirp->__allocation = sizeof (struct direct);
+ if (statbuf.st_blksize < sizeof (struct dirent))
+ dirp->allocation = sizeof (struct dirent);
else
- dirp->__allocation = statbuf.st_blksize;
+ dirp->allocation = statbuf.st_blksize;
#else
- dirp->__allocation = (BUFSIZ < sizeof (struct direct) ?
- sizeof (struct direct) : BUFSIZ);
+ dirp->allocation = (BUFSIZ < sizeof (struct dirent) ?
+ sizeof (struct dirent) : BUFSIZ);
#endif
- dirp->__data = (char *) malloc (dirp->__allocation);
- if (dirp->__data == NULL)
+ dirp->data = (char *) malloc (dirp->allocation);
+ if (dirp->data == NULL)
{
int save = errno;
- free ((PTR) dirp);
+ free (dirp);
(void) __close (fd);
errno = save;
return NULL;
}
- dirp->__fd = fd;
+ dirp->fd = fd;
return dirp;
}
-/* Copyright (C) 1991, 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
+/* Copyright (C) 1991, 92, 93, 94, 95, 96 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
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
Cambridge, MA 02139, USA. */
-#include <ansidecl.h>
#include <errno.h>
#include <limits.h>
#include <stddef.h>
#include <dirent.h>
#include <unistd.h>
#include <sys/types.h>
+#include <assert.h>
-#include "direct.h" /* This file defines `struct direct'. */
-#include "dirstream.h"
-
-/* direct.h may have an alternate definition for this. */
-#ifndef D_RECLEN
-#define D_RECLEN(dp) ((dp)->d_reclen)
-#endif
+#include <dirstream.h>
/* Read a directory entry from DIRP. */
struct dirent *
-DEFUN(readdir, (dirp), DIR *dirp)
+readdir (DIR *dirp)
{
- if (dirp == NULL || dirp->__data == NULL)
+ struct dirent *dp;
+
+ if (dirp == NULL || dirp->data == NULL)
{
errno = EINVAL;
return NULL;
}
- while (1)
+ do
{
- struct direct *dp;
+ size_t reclen;
- if (dirp->__offset >= dirp->__size)
+ if (dirp->offset >= dirp->size)
{
/* We've emptied out our buffer. Refill it. */
+ size_t maxread;
off_t base;
- ssize_t bytes = __getdirentries (dirp->__fd, dirp->__data,
- dirp->__allocation, &base);
+ ssize_t bytes;
+
+ if (sizeof (dp->d_name) > 1)
+ /* Fixed-size struct; must read one at a time (see below). */
+ maxread = sizeof *dp;
+ else
+ maxread = dirp->allocation;
+
+ base = dirp->filepos;
+ bytes = __getdirentries (dirp->fd, dirp->data, maxread, &base);
if (bytes <= 0)
return NULL;
- dirp->__size = (size_t) bytes;
+ dirp->size = (size_t) bytes;
/* Reset the offset into the buffer. */
- dirp->__offset = 0;
+ dirp->offset = 0;
}
- dp = (struct direct *) &dirp->__data[dirp->__offset];
- dirp->__offset += D_RECLEN (dp);
+ dp = (struct dirent *) &dirp->data[dirp->offset];
- if (dp->d_ino != 0)
- {
- /* Not a deleted file. */
- register struct dirent *d = &dirp->__entry;
- register const char *p;
- d->d_fileno = (ino_t) dp->d_ino;
- /* On some systems the name length does not actually mean much.
- But we always use it as a maximum. */
- p = memchr ((PTR) dp->d_name, '\0', D_NAMLEN (dp) + 1);
- d->d_namlen = (p != NULL) ? p - dp->d_name : D_NAMLEN (dp);
- memcpy (d->d_name, dp->d_name, d->d_namlen + 1);
- return d;
- }
- }
+#ifdef _DIRENT_HAVE_D_RECLEN
+ reclen = dp->d_reclen;
+#else
+ /* The only version of `struct dirent' that lacks `d_reclen'
+ is fixed-size. */
+ assert (sizeof dp->d_name > 1);
+ reclen = sizeof *dp;
+ /* The name is not terminated if it is the largest possible size.
+ Clobber the following byte to ensure proper null termination. We
+ read jst one entry at a time above so we know that byte will not
+ be used later. */
+ dp->d_name[sizeof dp->d_name] = '\0';
+#endif
+
+ dirp->offset += reclen;
+
+#ifdef _DIRENT_HAVE_D_OFF
+ dirp->filepos = dp->d_off;
+#else
+ dirp->filepos += reclen;
+#endif
+
+ /* Skip deleted files. */
+ } while (dp->d_ino == 0);
+
+ return dp;
}
-/* Copyright (C) 1991, 1995 Free Software Foundation, Inc.
+/* Copyright (C) 1991, 1995, 1996 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
#include <dirent.h>
#include <sys/types.h>
#include <unistd.h>
-#include "dirstream.h"
+#include <dirstream.h>
/* Rewind DIRP to the beginning of the directory. */
void
DEFUN(rewinddir, (dirp), DIR *dirp)
{
- (void) lseek(dirp->__fd, (off_t) 0, SEEK_SET);
- dirp->__offset = 0;
- dirp->__size = 0;
+ (void) lseek(dirp->fd, (off_t) 0, SEEK_SET);
+ dirp->offset = 0;
+ dirp->size = 0;
}
#include <stddef.h>
#include <dirent.h>
#include <unistd.h>
-#include "dirstream.h"
+#include <dirstream.h>
/* Seek to position POS in DIRP. */
void
DEFUN(seekdir, (dirp, pos), DIR *dirp AND __off_t pos)
{
- (void) __lseek(dirp->__fd, pos, SEEK_SET);
- dirp->__size = 0;
- dirp->__offset = 0;
+ (void) __lseek(dirp->fd, pos, SEEK_SET);
+ dirp->size = 0;
+ dirp->offset = 0;
}
--- /dev/null
+/* Directory entry structure `struct dirent'. Old System V version.
+Copyright (C) 1996 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 Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA. */
+
+struct dirent
+ {
+ unsigned short int d_fileno;
+ char d_name[14];
+ };
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
Cambridge, MA 02139, USA. */
-#include <ansidecl.h>
-#include <errno.h>
-#include <stddef.h>
#include <dirent.h>
-#include <unistd.h>
-#include <sys/types.h>
-#include "dirstream.h"
+
+#include <dirstream.h>
/* Return the current position of DIRP. */
off_t
-DEFUN(telldir, (dirp), DIR *dirp)
+telldir (DIR *dirp)
{
- register off_t pos;
-
- if (dirp == NULL)
- {
- errno = EINVAL;
- return (off_t) -1;
- }
-
- pos = __lseek(dirp->__fd, (off_t) 0, SEEK_CUR);
- if (pos == (off_t) -1)
- return (off_t) -1;
- return pos + dirp->__size - dirp->__offset;
+ return dirp->filepos;
}
projects / kopensolaris-gnu / glibc.git / commitdiff