0e767958a5
needed to hold the GEOM tree. At this point, pointer 'p' has an improper value (as it was used previously), and we're getting EFAULT. Fix this functionality by passing NULL instead of 'p'. This fixes mdconfig(8) -l output with high number of md(4) devices. Found by: kris Reviewed by: phk
67 lines
2.1 KiB
C
67 lines
2.1 KiB
C
/*-
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* Copyright (c) 2003 Poul-Henning Kamp
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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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* 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. The names of the authors may not be used to endorse or promote
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* products derived from this software without specific prior written
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* permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* 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 AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT 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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* $FreeBSD$
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*/
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#include <sys/types.h>
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#include <sys/sysctl.h>
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#include <stdlib.h>
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#include <string.h>
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#include "libgeom.h"
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char *
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geom_getxml()
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{
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char *p;
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size_t l;
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int i;
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l = 1024 * 1024; /* Start big, realloc back */
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p = malloc(l);
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if (p) {
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i = sysctlbyname("kern.geom.confxml", p, &l, NULL, 0);
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if (i == 0) {
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p = realloc(p, strlen(p) + 1);
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return (p);
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}
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free(p);
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}
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l = 0;
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i = sysctlbyname("kern.geom.confxml", NULL, &l, NULL, 0);
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if (i != 0)
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return (NULL);
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p = malloc(l + 4096);
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i = sysctlbyname("kern.geom.confxml", p, &l, NULL, 0);
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if (i == 0) {
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p = realloc(p, strlen(p) + 1);
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return (p);
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}
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return (NULL);
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}
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