linux: Implement {l}fstat{at} in terms of fstatat

Both fstatat and fstata64 calls the old fxstatat and fxstatat64
repectivelly with _STAT_VER, the one currently exported as default
for all ABIs.

Checked with a build for all affected ABIs. I also checked on x86_64,
i686, powerpc, powerpc64le, sparcv9, sparc64, s390, and s390x.

Reviewed-by: Lukasz Majewski <lukma@denx.de>

1 files changed, 38 insertions, 0 deletions

diff --git a/sysdeps/unix/sysv/linux/fstat64.c b/sysdeps/unix/sysv/linux/fstat64.c
new file mode 100644
index 0000000000..c2ff1ff577
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/fstat64.c
@@ -0,0 +1,38 @@
+/* Get file status.  Linux version.
+   Copyright (C) 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/>.  */
+
+#define __fstat __redirect___fstat
+#define fstat   __redirect_fstat
+#include <sys/stat.h>
+#undef __fstat
+#undef fstat
+#include <fcntl.h>
+#include <kernel_stat.h>
+
+int
+__fstat64 (int fd, struct stat64 *buf)
+{
+  return __fstatat64 (fd, "", buf, AT_EMPTY_PATH);
+}
+hidden_def (__fstat64)
+weak_alias (__fstat64, fstat64)
+
+#if XSTAT_IS_XSTAT64
+strong_alias (__fstat64, __fstat)
+weak_alias (__fstat64, fstat)
+#endif