1 files changed, 109 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/wordsize-64/fxstatat.c b/sysdeps/unix/sysv/linux/wordsize-64/fxstatat.c
new file mode 100644
index 0000000000..8b1c932ba9
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/wordsize-64/fxstatat.c
@@ -0,0 +1,109 @@
+/* Copyright (C) 2005, 2006 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.  */
+
+/* Ho hum, since fxstatat == fxstatat64 we must get rid of the
+   prototype or gcc will complain since they don't strictly match.  */
+#define __fxstatat64 __fxstatat64_disable
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <string.h>
+#include <sys/stat.h>
+
+#include <sysdep.h>
+#include <kernel-features.h>
+#include <sys/syscall.h>
+#include <bp-checks.h>
+
+
+/* Get information about the file NAME relative to FD in ST.  */
+int
+__fxstatat (int vers, int fd, const char *file, struct stat *st, int flag)
+{
+  if (vers != _STAT_VER_KERNEL && vers != _STAT_VER_LINUX)
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  int res;
+
+#ifdef __NR_newfstatat
+# ifndef __ASSUME_ATFCTS
+  if (__have_atfcts >= 0)
+# endif
+    {
+      res = INLINE_SYSCALL (newfstatat, 4, fd, file, st, flag);
+# ifndef __ASSUME_ATFCTS
+      if (res == -1 && errno == ENOSYS)
+	__have_atfcts = -1;
+      else
+# endif
+	return res;
+    }
+#endif
+
+#ifndef __ASSUME_ATFCTS
+  if ((flag & ~AT_SYMLINK_NOFOLLOW) != 0)
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  char *buf = NULL;
+
+  if (fd != AT_FDCWD && file[0] != '/')
+    {
+      size_t filelen = strlen (file);
+      static const char procfd[] = "/proc/self/fd/%d/%s";
+      /* Buffer for the path name we are going to use.  It consists of
+	 - the string /proc/self/fd/
+	 - the file descriptor number
+	 - the file name provided.
+	 The final NUL is included in the sizeof.   A bit of overhead
+	 due to the format elements compensates for possible negative
+	 numbers.  */
+      size_t buflen = sizeof (procfd) + sizeof (int) * 3 + filelen;
+      buf = alloca (buflen);
+
+      __snprintf (buf, buflen, procfd, fd, file);
+      file = buf;
+    }
+
+  INTERNAL_SYSCALL_DECL (err);
+
+  if (flag & AT_SYMLINK_NOFOLLOW)
+    res = INTERNAL_SYSCALL (lstat, err, 2, file, CHECK_1 (st));
+  else
+    res = INTERNAL_SYSCALL (stat, err, 2, file, CHECK_1 (st));
+
+  if (__builtin_expect (INTERNAL_SYSCALL_ERROR_P (res, err), 0))
+    {
+      __atfct_seterrno (INTERNAL_SYSCALL_ERRNO (res, err), fd, buf);
+      res = -1;
+    }
+
+  return res;
+#endif
+}
+libc_hidden_def (__fxstatat)
+#undef __fxstatat64
+strong_alias (__fxstatat, __fxstatat64);
+strong_alias (__fxstatat64, __GI___fxstatat64)