67 lines
2.1 KiB
C
67 lines
2.1 KiB
C
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/*-
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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", p, &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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