linux: Consolidate fstatfs implementations

The __NR_fstatfs64 syscall is supported on all architectures but
aarch64, mips64, riscv64, and x86_64.  And newer ABIs also uses
the new fstatfs64 interface (where the struct size is used as
first argument).

So the default implementation now uses:

  1. __NR_fstatfs64 for non-LFS call and handle overflow directly
     There is no need to handle __NR_fstatfs since all architectures
     that only support are LFS only.

  2. __NR_fstatfs if defined or __NR_fstatfs64 otherwise for LFS
     call.

Alpha is the only outlier, it is a 64-bit architecture which
provides non-LFS interface and only provides __NR_fstatfs64 on
newer kernels (5.1+).

Checked on x86_64-linux-gnu.

Reviewed-by: Carlos O'Donell <carlos@redhat.com>

1 files changed, 0 insertions, 35 deletions

diff --git a/sysdeps/unix/sysv/linux/generic/wordsize-32/fstatfs.c b/sysdeps/unix/sysv/linux/generic/wordsize-32/fstatfs.c
deleted file mode 100644
index a611f33128..0000000000
--- a/sysdeps/unix/sysv/linux/generic/wordsize-32/fstatfs.c
+++ /dev/null
@@ -1,35 +0,0 @@
-/* Copyright (C) 2011-2021 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-   Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011.
-
-   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 <sys/statfs.h>
-#include <kernel_stat.h>
-#include <stddef.h>
-#include <sysdep.h>
-
-#if !STATFS_IS_STATFS64
-#include "overflow.h"
-
-/* Return information about the filesystem on which FD resides.  */
-int
-__fstatfs (int fd, struct statfs *buf)
-{
-  int rc = INLINE_SYSCALL (fstatfs64, 3, fd, sizeof (*buf), buf);
-  return rc ?: statfs_overflow (buf);
-}
-weak_alias (__fstatfs, fstatfs)
-#endif