[glibc] Linux: consolidate chown implementation

[glibc] Linux: consolidate chown implementation

[Adhemerval Zanella]

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=1001abfa14d5289236dcca740ab72ec4d1fa5352

commit 1001abfa14d5289236dcca740ab72ec4d1fa5352
Author: Adhemerval Zanella Netto <adhemerval.zanella@linaro.org>
Date:   Wed Oct 19 19:14:07 2022 -0300

    Linux: consolidate chown implementation
    
    Use chown syscall if defined, otherwise use fchownat.
    
    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 => }/chown.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/sysdeps/unix/sysv/linux/generic/chown.c b/sysdeps/unix/sysv/linux/chown.c
similarity index 77%
rename from sysdeps/unix/sysv/linux/generic/chown.c
rename to sysdeps/unix/sysv/linux/chown.c
index 53997a1127..c1cd4d6c3d 100644
--- a/sysdeps/unix/sysv/linux/generic/chown.c
+++ b/sysdeps/unix/sysv/linux/chown.c
@@ -1,4 +1,5 @@
-/* Copyright (C) 2011-2022 Free Software Foundation, Inc.
+/* Change ownership of 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
@@ -23,7 +24,11 @@
 int
 __chown (const char *file, uid_t owner, gid_t group)
 {
-  return INLINE_SYSCALL (fchownat, 5, AT_FDCWD, file, owner, group, 0);
+#ifdef __NR_chown
+  return INLINE_SYSCALL_CALL (chown, file, owner, groups);
+#else
+  return INLINE_SYSCALL_CALL (fchownat, AT_FDCWD, file, owner, group, 0);
+#endif
 }
 libc_hidden_def (__chown)
 weak_alias (__chown, chown)