malloc/alloc_buffer_copy_bytes.c

   1 /* Copy an array of bytes into the buffer.
   2    Copyright (C) 2017 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <http://www.gnu.org/licenses/>.  */
  18
  19 #include <alloc_buffer.h>
  20
  21 #include <string.h>
  22
  23 /* This function works on a copy of the buffer object, so that it can
  24    remain non-addressable in the caller.  */
  25 struct alloc_buffer
  26 __libc_alloc_buffer_copy_bytes (struct alloc_buffer buf,
  27                                 const void *src, size_t len)
  28 {
  29   void *ptr = alloc_buffer_alloc_bytes (&buf, len);
  30   if (ptr != NULL)
  31     memcpy (ptr, src, len);
  32   return buf;
  33 }
  34 libc_hidden_def (__libc_alloc_buffer_copy_bytes)