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37bb75f740
1. Very large RRSIG RRsets included in a negative cache can trigger an assertion failure that will crash named (BIND 9 DNS) due to an off-by-one error in a buffer size check. This bug affects all resolving name servers, whether DNSSEC validation is enabled or not, on all BIND versions prior to today. There is a possibility of malicious exploitation of this bug by remote users. 2. Named could fail to validate zones listed in a DLV that validated insecure without using DLV and had DS records in the parent zone. Add a patch provided by ru@ and confirmed by ISC to fix a crash at shutdown time when a SIG(0) key is being used.
96 lines
2.5 KiB
C
96 lines
2.5 KiB
C
/*
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* Copyright (C) 2004, 2005, 2007 Internet Systems Consortium, Inc. ("ISC")
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* Copyright (C) 1999-2001 Internet Software Consortium.
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
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* REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
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* AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
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* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
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* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
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* OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/
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/* $Id: taskpool.c,v 1.18 2007-06-18 23:47:44 tbox Exp $ */
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/*! \file */
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#include <config.h>
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#include <isc/mem.h>
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#include <isc/taskpool.h>
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#include <isc/util.h>
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/***
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*** Types.
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***/
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struct isc_taskpool {
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isc_mem_t * mctx;
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unsigned int ntasks;
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isc_task_t ** tasks;
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};
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/***
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*** Functions.
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***/
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isc_result_t
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isc_taskpool_create(isc_taskmgr_t *tmgr, isc_mem_t *mctx,
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unsigned int ntasks, unsigned int quantum,
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isc_taskpool_t **poolp)
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{
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unsigned int i;
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isc_taskpool_t *pool;
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isc_result_t result;
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INSIST(ntasks > 0);
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pool = isc_mem_get(mctx, sizeof(*pool));
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if (pool == NULL)
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return (ISC_R_NOMEMORY);
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pool->mctx = mctx;
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pool->ntasks = ntasks;
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pool->tasks = isc_mem_get(mctx, ntasks * sizeof(isc_task_t *));
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if (pool->tasks == NULL) {
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isc_mem_put(mctx, pool, sizeof(*pool));
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return (ISC_R_NOMEMORY);
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}
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for (i = 0; i < ntasks; i++)
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pool->tasks[i] = NULL;
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for (i = 0; i < ntasks; i++) {
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result = isc_task_create(tmgr, quantum, &pool->tasks[i]);
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if (result != ISC_R_SUCCESS) {
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isc_taskpool_destroy(&pool);
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return (result);
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}
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isc_task_setname(pool->tasks[i], "taskpool", NULL);
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}
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*poolp = pool;
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return (ISC_R_SUCCESS);
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}
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void isc_taskpool_gettask(isc_taskpool_t *pool, unsigned int hash,
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isc_task_t **targetp)
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{
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isc_task_attach(pool->tasks[hash % pool->ntasks], targetp);
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}
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void
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isc_taskpool_destroy(isc_taskpool_t **poolp) {
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unsigned int i;
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isc_taskpool_t *pool = *poolp;
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for (i = 0; i < pool->ntasks; i++) {
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if (pool->tasks[i] != NULL) {
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isc_task_detach(&pool->tasks[i]);
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}
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}
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isc_mem_put(pool->mctx, pool->tasks,
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pool->ntasks * sizeof(isc_task_t *));
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isc_mem_put(pool->mctx, pool, sizeof(*pool));
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*poolp = NULL;
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}
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