Linux: consolidate sendfile implementation

This is similar to other LFS consolidation, where the non-LFS is only
built if __OFF_T_MATCHES_OFF64_T is not defined and the LFS version
is aliased to non-LFS name if __OFF_T_MATCHES_OFF64_T is defined.

For non-LFS variant, use sendfile syscall if defined, otherwise use
sendfile64 plus the offset overflow check (as generic implementation).

Checked on x86_64-linux-gnu.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
Tested-by: Carlos O'Donell <carlos@redhat.com>

1 files changed, 0 insertions, 46 deletions

diff --git a/sysdeps/unix/sysv/linux/generic/wordsize-32/sendfile.c b/sysdeps/unix/sysv/linux/generic/wordsize-32/sendfile.c
deleted file mode 100644
index 4fdf979..0000000
--- a/sysdeps/unix/sysv/linux/generic/wordsize-32/sendfile.c
+++ /dev/null
@@ -1,46 +0,0 @@
-/* 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
-   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/>.  */
-
-#include <sys/sendfile.h>
-#include <stddef.h>
-#include <errno.h>
-#include <sysdep.h>
-
-/* Send COUNT bytes from file associated with IN_FD starting at OFFSET to
-   descriptor OUT_FD.  */
-ssize_t
-sendfile (int out_fd, int in_fd, off_t *offset, size_t count)
-{
-  __off64_t off64;
-  int rc;
-
-  if (offset != NULL)
-    {
-      if (*offset < 0 || (off_t) (*offset + count) < 0)
-        {
-          __set_errno (EINVAL);
-          return -1;
-        }
-      off64 = *offset;
-    }
-
-  rc = INLINE_SYSCALL (sendfile64, 4, out_fd, in_fd,
-                       offset ? &off64 : NULL, count);
-  if (offset)
-    *offset = off64;
-  return rc;
-}