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/* Copyright (C) 2005 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, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <dirent.h>
#include <errno.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <not-cancel.h>
DIR *
fdopendir (int fd)
{
struct stat64 statbuf;
if (__builtin_expect (__fxstat64 (_STAT_VER, fd, &statbuf), 0) < 0)
return NULL;
if (__builtin_expect (! S_ISDIR (statbuf.st_mode), 0))
{
__set_errno (ENOTDIR);
return NULL;
}
/* Make sure the descriptor allows for reading. */
int flags = __fcntl (fd, F_GETFL);
if (__builtin_expect (flags == -1, 0))
return NULL;
if (__builtin_expect ((flags & O_ACCMODE) == O_WRONLY, 0))
{
__set_errno (EINVAL);
return NULL;
}
return __alloc_dir (fd, false, &statbuf);
}
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