[glibc] Linux: consolidate symlink implementation

[Adhemerval Zanella <azanella@sourceware.org>]

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=bf58f34a708055361056907511c625449b7d27d6

commit bf58f34a708055361056907511c625449b7d27d6
Author: Adhemerval Zanella Netto <adhemerval.zanella@linaro.org>
Date:   Wed Oct 19 19:14:16 2022 -0300

    Linux: consolidate symlink implementation
    
    Use symlink syscall if defined, otherwise use symlinkat.
    
    Checked on x86_64-linux-gnu.
    Reviewed-by: Carlos O'Donell <carlos@redhat.com>
    Tested-by: Carlos O'Donell <carlos@redhat.com>

Diff:
---
 sysdeps/unix/sysv/linux/{generic => }/symlink.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/sysdeps/unix/sysv/linux/generic/symlink.c b/sysdeps/unix/sysv/linux/symlink.c
similarity index 78%
rename from sysdeps/unix/sysv/linux/generic/symlink.c
rename to sysdeps/unix/sysv/linux/symlink.c
index 9242f5825e..b336d5ec4c 100644
--- a/sysdeps/unix/sysv/linux/generic/symlink.c
+++ b/sysdeps/unix/sysv/linux/symlink.c
@@ -1,4 +1,5 @@
-/* Copyright (C) 2011-2022 Free Software Foundation, Inc.
+/* Make a new name for a file.  Linux version.
+   Copyright (C) 2011-2022 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
@@ -23,6 +24,10 @@
 int
 __symlink (const char *from, const char *to)
 {
-  return INLINE_SYSCALL (symlinkat, 3, from, AT_FDCWD, to);
+#ifdef __NR_symlink
+  return INLINE_SYSCALL_CALL (symlink, from, to);
+#else
+  return INLINE_SYSCALL_CALL (symlinkat, from, AT_FDCWD, to);
+#endif
 }
 weak_alias (__symlink, symlink)