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a609f79f1f
From the strcpy(3) man page, the following warning is given: The strncpy() function is similar, except that at most n bytes of src are copied. Warning: If there is no null byte among the first n bytes of src, the string placed in dest will not be null-terminated. The current corosync code base does not take this warning into account when using strncpy, potentially resulting in non-null terminated strings. Signed-off-by: Russell Bryant <russell@russellbryant.net> Reviewed-by: Steven Dake <sdake@redhat.com>
137 lines
4.1 KiB
C
137 lines
4.1 KiB
C
/*
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* Copyright (c) 2002-2004 MontaVista Software, Inc.
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* Copyright (c) 2004 Open Source Development Lab
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* Copyright (c) 2006-2007, 2009 Red Hat, Inc.
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*
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* All rights reserved.
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*
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* Author: Steven Dake (sdake@redhat.com), Mark Haverkamp (markh@osdl.org)
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*
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* This software licensed under BSD license, the text of which follows:
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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 are met:
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*
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* - Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* - Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* - Neither the name of the MontaVista Software, Inc. nor the names of its
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* contributors may be used to endorse or promote products derived from this
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* software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <config.h>
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <errno.h>
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#include <sys/time.h>
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#include <assert.h>
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#include <corosync/corotypes.h>
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#include <corosync/list.h>
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#include <corosync/engine/logsys.h>
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#include <corosync/coroipc_types.h>
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#include "util.h"
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LOGSYS_DECLARE_SUBSYS ("MAIN");
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/*
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* Compare two names. returns non-zero on match.
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*/
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int name_match(cs_name_t *name1, cs_name_t *name2)
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{
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if (name1->length == name2->length) {
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return ((strncmp ((char *)name1->value, (char *)name2->value,
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name1->length)) == 0);
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}
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return 0;
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}
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/*
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* Get the time of day and convert to nanoseconds
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*/
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cs_time_t clust_time_now(void)
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{
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struct timeval tv;
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cs_time_t time_now;
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if (gettimeofday(&tv, 0)) {
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return 0ULL;
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}
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time_now = (cs_time_t)(tv.tv_sec) * 1000000000ULL;
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time_now += (cs_time_t)(tv.tv_usec) * 1000ULL;
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return time_now;
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}
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void _corosync_out_of_memory_error (void) __attribute__((noreturn));
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void _corosync_out_of_memory_error (void)
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{
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assert (0==1);
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exit (EXIT_FAILURE);
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}
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void _corosync_exit_error (
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enum e_ais_done err, const char *file, unsigned int line) __attribute__((noreturn));
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void _corosync_exit_error (
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enum e_ais_done err, const char *file, unsigned int line)
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{
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log_printf (LOGSYS_LEVEL_ERROR, "Corosync Cluster Engine exiting "
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"with status %d at %s:%u.\n", err, file, line);
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logsys_atexit ();
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exit (err);
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}
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#define min(a,b) ((a) < (b) ? (a) : (b))
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char *getcs_name_t (cs_name_t *name)
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{
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static char ret_name[CS_MAX_NAME_LENGTH];
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/* if string is corrupt (non-terminated), ensure it's displayed safely */
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if (name->length >= CS_MAX_NAME_LENGTH || name->value[name->length] != '\0') {
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memset (ret_name, 0, sizeof (ret_name));
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memcpy (ret_name, name->value, min(name->length, CS_MAX_NAME_LENGTH -1));
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return (ret_name);
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}
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return ((char *)name->value);
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}
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void setcs_name_t (cs_name_t *name, char *str) {
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strncpy ((char *)name->value, str, sizeof (name->value));
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((char *)name->value)[sizeof (name->value) - 1] = '\0';
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if (strlen ((char *)name->value) > CS_MAX_NAME_LENGTH) {
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name->length = CS_MAX_NAME_LENGTH;
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} else {
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name->length = strlen (str);
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}
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}
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int cs_name_tisEqual (cs_name_t *str1, char *str2) {
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if (str1->length == strlen (str2)) {
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return ((strncmp ((char *)str1->value, (char *)str2,
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str1->length)) == 0);
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} else {
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return 0;
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}
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}
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