glibc/sysdeps/mach/hurd/readdir_r.c

65 lines
1.9 KiB
C

/* Copyright (C) 1993-2017 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 Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <errno.h>
#include <limits.h>
#include <stddef.h>
#include <string.h>
#include <dirent.h>
#include <unistd.h>
#include <sys/types.h>
#include <hurd.h>
#include <hurd/fd.h>
#include "dirstream.h"
/* Read a directory entry from DIRP. */
int
__readdir_r (DIR *dirp, struct dirent *entry, struct dirent **result)
{
if (sizeof (struct dirent64) == sizeof (struct dirent))
/* We should in fact just be an alias to readdir64_r on this machine. */
return __readdir64_r (dirp,
(struct dirent64 *) entry,
(struct dirent64 **) result);
struct dirent64 *result64;
union
{
struct dirent64 d;
char b[offsetof (struct dirent64, d_name) + UCHAR_MAX + 1];
} u;
int err;
err = __readdir64_r (dirp, &u.d, &result64);
if (result64)
{
entry->d_fileno = result64->d_fileno;
entry->d_reclen = result64->d_reclen;
entry->d_type = result64->d_type;
entry->d_namlen = result64->d_namlen;
memcpy (entry->d_name, result64->d_name, result64->d_namlen + 1);
*result = entry;
}
else
*result = NULL;
return err;
}
weak_alias (__readdir_r, readdir_r)