linux: Move posix dir implementations to Linux

This generic implementation already expects a getdents API which
is Linux specific.  It also allows simplify it by assuming
_DIRENT_HAVE_D_RECLEN and _DIRENT_HAVE_D_OFF support.

The readdir are also expanded on each required implementation,
futher fixes and improvements will make parametrize the
implementation more complex.

Checked on x86_64-linux-gnu, i686-linux-gnu, and with a build
for all affected ABIs.

1 files changed, 0 insertions, 52 deletions

diff --git a/sysdeps/posix/fdopendir.c b/sysdeps/posix/fdopendir.c
deleted file mode 100644
index e424fbdaa2..0000000000
--- a/sysdeps/posix/fdopendir.c
+++ /dev/null
@@ -1,52 +0,0 @@
-/* Copyright (C) 2005-2020 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
-   <https://www.gnu.org/licenses/>.  */
-
-#include <dirent.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <stddef.h>
-#include <sys/stat.h>
-
-#include <not-cancel.h>
-
-
-DIR *
-__fdopendir (int fd)
-{
-  struct stat64 statbuf;
-
-  if (__builtin_expect (__fstat64 (fd, &statbuf), 0) < 0)
-    return NULL;
-  if (__glibc_unlikely (! S_ISDIR (statbuf.st_mode)))
-    {
-      __set_errno (ENOTDIR);
-      return NULL;
-    }
-
-  /* Make sure the descriptor allows for reading.  */
-  int flags = __fcntl64_nocancel (fd, F_GETFL);
-  if (__glibc_unlikely (flags == -1))
-    return NULL;
-  if (__glibc_unlikely ((flags & O_ACCMODE) == O_WRONLY))
-    {
-      __set_errno (EINVAL);
-      return NULL;
-    }
-
-  return __alloc_dir (fd, false, flags, &statbuf);
-}
-weak_alias (__fdopendir, fdopendir)