mirror of
https://sourceware.org/git/glibc.git
synced 2025-11-03 20:53:13 +03:00
89a9e37b7a
1998-03-20 11:58 Ulrich Drepper <drepper@cygnus.com> * dirent/Makefile (routines): Add scandir64, alphasort64, and versionsort64. * dirent/alphasort64.c: New file. * dirent/scandir64.c: New file. * dirent/versionsort64.c: New file. * dirent/dirent.h: Add LFS support for scandir, alphasort, and versionsort. * sysdeps/generic/readdir64.c: Rename to __readdir64 and make old name weak alias. * sysdeps/unix/sysv/linux/readdir64.c: Likewise. * dirent/alphasort.c: Use strcoll instead of strcmp. * dirent/scandir.c: Optimize a bit. * dirent/versionsort.c: Pretty print. 1998-03-20 Ulrich Drepper <drepper@cygnus.com> * string/string.h: Add prototype for __strtok_r.
105 lines
2.7 KiB
C
105 lines
2.7 KiB
C
/* Copyright (C) 1997, 1998 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., 59 Temple Place - Suite 330,
|
|
Boston, MA 02111-1307, USA. */
|
|
|
|
#include <errno.h>
|
|
#include <limits.h>
|
|
#include <stddef.h>
|
|
#include <string.h>
|
|
#include <dirent.h>
|
|
#include <unistd.h>
|
|
#include <sys/types.h>
|
|
#include <assert.h>
|
|
|
|
#include <dirstream.h>
|
|
|
|
extern ssize_t __getdirentries64 (int, char *, size_t, off_t *);
|
|
|
|
|
|
/* Read a directory entry from DIRP. */
|
|
struct dirent64 *
|
|
__readdir64 (DIR *dirp)
|
|
{
|
|
struct dirent64 *dp;
|
|
|
|
__libc_lock_lock (dirp->lock);
|
|
|
|
do
|
|
{
|
|
size_t reclen;
|
|
|
|
if (dirp->offset >= dirp->size)
|
|
{
|
|
/* We've emptied out our buffer. Refill it. */
|
|
|
|
size_t maxread;
|
|
off_t base;
|
|
ssize_t bytes;
|
|
|
|
#ifndef _DIRENT_HAVE_D_RECLEN
|
|
/* Fixed-size struct; must read one at a time (see below). */
|
|
maxread = sizeof *dp;
|
|
#else
|
|
maxread = dirp->allocation;
|
|
#endif
|
|
|
|
base = dirp->filepos;
|
|
bytes = __getdirentries64 (dirp->fd, dirp->data, maxread, &base);
|
|
if (bytes <= 0)
|
|
{
|
|
dp = NULL;
|
|
break;
|
|
}
|
|
dirp->size = (size_t) bytes;
|
|
|
|
/* Reset the offset into the buffer. */
|
|
dirp->offset = 0;
|
|
}
|
|
|
|
dp = (struct dirent64 *) &dirp->data[dirp->offset];
|
|
|
|
#ifdef _DIRENT_HAVE_D_RECLEN
|
|
reclen = dp->d_reclen;
|
|
#else
|
|
/* The only version of `struct dirent64' 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);
|
|
|
|
__libc_lock_unlock (dirp->lock);
|
|
|
|
return dp;
|
|
}
|
|
weak_alias (__readdir64, readdir64)
|