Linux: consolidate lchown implementation

Use lchown 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 --git a/sysdeps/unix/sysv/linux/generic/lchown.c b/sysdeps/unix/sysv/linux/lchown.c
similarity index 75%
rename from sysdeps/unix/sysv/linux/generic/lchown.c
rename to sysdeps/unix/sysv/linux/lchown.c
index 996925d7992d9b0508c0b292ed9fa2c551b8a41a..4888e5f194c116f4bb90d530851f302772c38dff 100644 (file)
--- a/sysdeps/unix/sysv/linux/generic/lchown.c
+++ b/sysdeps/unix/sysv/linux/lchown.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
 __lchown (const char *file, uid_t owner, gid_t group)
 {
-  return INLINE_SYSCALL (fchownat, 5, AT_FDCWD, file, owner, group,
-                         AT_SYMLINK_NOFOLLOW);
+#ifdef __NR_lchown
+  return INLINE_SYSCALL_CALL (lchown, file, owner, group);
+#else
+  return INLINE_SYSCALL_CALL (fchownat, AT_FDCWD, file, owner, group,
+                             AT_SYMLINK_NOFOLLOW);
+#endif
 }
 weak_alias (__lchown, lchown)