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/* $OpenBSD: alloc.c,v 1.15 2017/02/13 19:13:14 krw Exp $ */ |
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/* Memory allocation... */ |
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/* |
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* Copyright (c) 1995, 1996, 1998 The Internet Software Consortium. |
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* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* 3. Neither the name of The Internet Software Consortium nor the names |
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* of its contributors may be used to endorse or promote products derived |
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* from this software without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE INTERNET SOFTWARE CONSORTIUM AND |
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* CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, |
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
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* DISCLAIMED. IN NO EVENT SHALL THE INTERNET SOFTWARE CONSORTIUM OR |
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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* |
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* This software has been written for the Internet Software Consortium |
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* by Ted Lemon <mellon@fugue.com> in cooperation with Vixie |
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* Enterprises. To learn more about the Internet Software Consortium, |
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* see ``http://www.vix.com/isc''. To learn more about Vixie |
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* Enterprises, see ``http://www.vix.com''. |
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*/ |
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#include <sys/types.h> |
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#include <sys/socket.h> |
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#include <net/if.h> |
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#include <netinet/in.h> |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include "dhcp.h" |
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#include "tree.h" |
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#include "dhcpd.h" |
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#include "log.h" |
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struct lease_state *free_lease_states; |
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struct tree_cache *free_tree_caches; |
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struct tree_cache * |
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new_tree_cache(char *name) |
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{ |
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struct tree_cache *rval; |
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if (free_tree_caches) { |
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rval = free_tree_caches; |
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free_tree_caches = (struct tree_cache *)(rval->value); |
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} else { |
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rval = calloc(1, sizeof(struct tree_cache)); |
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if (!rval) |
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fatalx("unable to allocate tree cache for %s.", name); |
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} |
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return (rval); |
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} |
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void |
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free_tree_cache(struct tree_cache *ptr) |
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{ |
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ptr->value = (unsigned char *)free_tree_caches; |
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free_tree_caches = ptr; |
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} |
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struct lease_state * |
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new_lease_state(char *name) |
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{ |
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struct lease_state *rval; |
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if (free_lease_states) { |
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rval = free_lease_states; |
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free_lease_states = free_lease_states->next; |
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} else { |
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rval = calloc(1, sizeof(struct lease_state)); |
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if (!rval) |
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fatalx("unable to allocate lease state for %s.", name); |
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} |
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return (rval); |
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} |
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void |
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free_lease_state(struct lease_state *ptr, char *name) |
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{ |
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free(ptr->prl); |
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ptr->next = free_lease_states; |
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free_lease_states = ptr; |
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} |