kc3-lang/libbsd/src/freezero.c

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• Hash : 01f0d1ea
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  Date : 2020-12-31T12:46:03
  

  Add recallocarray() and freezero() from OpenBSD Add recallocarray(), introduced in OpenBSD 6.1, and freezero(), introduced in OpenBSD 6.2. The former is imported as-is from OpenBSD, while the latter is the non-malloc-internal branch of the same code (and also the OpenSSH portable variant). Both of these originated in OpenBSD, but have also been implemented by IllumOS, cf. https://www.illumos.org/issues/8546 Documentation for these functions is in malloc(3) upstream, the relevant parts of which were previously imported in reallocarray(3bsd). Update reallocarray(3bsd) with the changes that were introduced since, and add the relevant bits for recallocarray() and freezero(), plus aliases. [guillem@hadrons.org: Update copyright in COPYING. ] Closes: !10 Signed-off-by: Guillem Jover <guillem@hadrons.org>

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• src/freezero.c

• /*	$OpenBSD: malloc.c,v 1.267 2020/11/23 15:42:11 otto Exp $	*/
  /*
   * Copyright (c) 2008, 2010, 2011, 2016 Otto Moerbeek <otto@drijf.net>
   *
   * Permission to use, copy, modify, and distribute this software for any
   * purpose with or without fee is hereby granted, provided that the above
   * copyright notice and this permission notice appear in all copies.
   *
   * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
   * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
   * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
   * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
   * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
   * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
   */
  
  #include <stdlib.h>
  #include <string.h>
  
  void
  freezero(void *ptr, size_t sz)
  {
  	/* This is legal. */
  	if (ptr == NULL)
  		return;
  
  	explicit_bzero(ptr, sz);
  	free(ptr);
  }
  

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