748e404f26
kern.geom.confxml sysctl, it's silly to warn about tags in libgeom, especially since libgeom exists simply to build a tree out of the conf information. Obtained from: Netflix MFC after: 3 days
520 lines
12 KiB
C
520 lines
12 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 <stdio.h>
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#include <inttypes.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <ctype.h>
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#include <sys/stat.h>
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#include <sys/mman.h>
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#include <sys/queue.h>
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#include <sys/sbuf.h>
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#include <sys/sysctl.h>
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#include <err.h>
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#include <bsdxml.h>
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#include <libgeom.h>
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struct mystate {
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struct gmesh *mesh;
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struct gclass *class;
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struct ggeom *geom;
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struct gprovider *provider;
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struct gconsumer *consumer;
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int level;
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struct sbuf *sbuf[20];
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struct gconf *config;
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int nident;
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XML_Parser parser;
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int error;
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};
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static void
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StartElement(void *userData, const char *name, const char **attr)
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{
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struct mystate *mt;
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void *id;
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void *ref;
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int i;
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mt = userData;
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mt->level++;
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mt->sbuf[mt->level] = sbuf_new_auto();
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id = NULL;
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ref = NULL;
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for (i = 0; attr[i] != NULL; i += 2) {
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if (!strcmp(attr[i], "id")) {
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id = (void *)strtoul(attr[i + 1], NULL, 0);
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mt->nident++;
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} else if (!strcmp(attr[i], "ref")) {
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ref = (void *)strtoul(attr[i + 1], NULL, 0);
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} else
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printf("%*.*s[%s = %s]\n",
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mt->level + 1, mt->level + 1, "",
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attr[i], attr[i + 1]);
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}
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if (!strcmp(name, "class") && mt->class == NULL) {
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mt->class = calloc(1, sizeof *mt->class);
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if (mt->class == NULL) {
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mt->error = errno;
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XML_StopParser(mt->parser, 0);
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warn("Cannot allocate memory during processing of '%s' "
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"element", name);
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return;
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}
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mt->class->lg_id = id;
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LIST_INSERT_HEAD(&mt->mesh->lg_class, mt->class, lg_class);
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LIST_INIT(&mt->class->lg_geom);
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LIST_INIT(&mt->class->lg_config);
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return;
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}
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if (!strcmp(name, "geom") && mt->geom == NULL) {
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mt->geom = calloc(1, sizeof *mt->geom);
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if (mt->geom == NULL) {
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mt->error = errno;
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XML_StopParser(mt->parser, 0);
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warn("Cannot allocate memory during processing of '%s' "
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"element", name);
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return;
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}
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mt->geom->lg_id = id;
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LIST_INSERT_HEAD(&mt->class->lg_geom, mt->geom, lg_geom);
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LIST_INIT(&mt->geom->lg_provider);
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LIST_INIT(&mt->geom->lg_consumer);
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LIST_INIT(&mt->geom->lg_config);
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return;
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}
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if (!strcmp(name, "class") && mt->geom != NULL) {
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mt->geom->lg_class = ref;
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return;
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}
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if (!strcmp(name, "consumer") && mt->consumer == NULL) {
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mt->consumer = calloc(1, sizeof *mt->consumer);
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if (mt->consumer == NULL) {
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mt->error = errno;
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XML_StopParser(mt->parser, 0);
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warn("Cannot allocate memory during processing of '%s' "
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"element", name);
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return;
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}
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mt->consumer->lg_id = id;
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LIST_INSERT_HEAD(&mt->geom->lg_consumer, mt->consumer,
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lg_consumer);
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LIST_INIT(&mt->consumer->lg_config);
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return;
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}
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if (!strcmp(name, "geom") && mt->consumer != NULL) {
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mt->consumer->lg_geom = ref;
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return;
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}
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if (!strcmp(name, "provider") && mt->consumer != NULL) {
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mt->consumer->lg_provider = ref;
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return;
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}
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if (!strcmp(name, "provider") && mt->provider == NULL) {
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mt->provider = calloc(1, sizeof *mt->provider);
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if (mt->provider == NULL) {
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mt->error = errno;
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XML_StopParser(mt->parser, 0);
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warn("Cannot allocate memory during processing of '%s' "
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"element", name);
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return;
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}
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mt->provider->lg_id = id;
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LIST_INSERT_HEAD(&mt->geom->lg_provider, mt->provider,
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lg_provider);
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LIST_INIT(&mt->provider->lg_consumers);
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LIST_INIT(&mt->provider->lg_config);
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return;
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}
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if (!strcmp(name, "geom") && mt->provider != NULL) {
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mt->provider->lg_geom = ref;
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return;
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}
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if (!strcmp(name, "config")) {
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if (mt->provider != NULL) {
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mt->config = &mt->provider->lg_config;
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return;
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}
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if (mt->consumer != NULL) {
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mt->config = &mt->consumer->lg_config;
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return;
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}
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if (mt->geom != NULL) {
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mt->config = &mt->geom->lg_config;
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return;
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}
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if (mt->class != NULL) {
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mt->config = &mt->class->lg_config;
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return;
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}
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}
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}
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static void
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EndElement(void *userData, const char *name)
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{
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struct mystate *mt;
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struct gconfig *gc;
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char *p;
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mt = userData;
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p = NULL;
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if (sbuf_finish(mt->sbuf[mt->level]) == 0)
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p = strdup(sbuf_data(mt->sbuf[mt->level]));
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sbuf_delete(mt->sbuf[mt->level]);
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mt->sbuf[mt->level] = NULL;
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mt->level--;
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if (p == NULL) {
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mt->error = errno;
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XML_StopParser(mt->parser, 0);
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warn("Cannot allocate memory during processing of '%s' "
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"element", name);
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return;
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}
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if (strlen(p) == 0) {
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free(p);
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p = NULL;
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}
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if (!strcmp(name, "name")) {
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if (mt->provider != NULL) {
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mt->provider->lg_name = p;
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return;
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} else if (mt->geom != NULL) {
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mt->geom->lg_name = p;
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return;
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} else if (mt->class != NULL) {
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mt->class->lg_name = p;
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return;
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}
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}
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if (!strcmp(name, "rank") && mt->geom != NULL) {
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mt->geom->lg_rank = strtoul(p, NULL, 0);
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free(p);
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return;
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}
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if (!strcmp(name, "mode") && mt->provider != NULL) {
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mt->provider->lg_mode = p;
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return;
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}
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if (!strcmp(name, "mode") && mt->consumer != NULL) {
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mt->consumer->lg_mode = p;
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return;
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}
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if (!strcmp(name, "mediasize") && mt->provider != NULL) {
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mt->provider->lg_mediasize = strtoumax(p, NULL, 0);
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free(p);
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return;
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}
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if (!strcmp(name, "sectorsize") && mt->provider != NULL) {
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mt->provider->lg_sectorsize = strtoul(p, NULL, 0);
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free(p);
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return;
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}
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if (!strcmp(name, "stripesize") && mt->provider != NULL) {
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mt->provider->lg_stripesize = strtoumax(p, NULL, 0);
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free(p);
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return;
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}
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if (!strcmp(name, "stripeoffset") && mt->provider != NULL) {
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mt->provider->lg_stripeoffset = strtoumax(p, NULL, 0);
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free(p);
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return;
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}
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if (!strcmp(name, "config")) {
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mt->config = NULL;
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return;
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}
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if (mt->config != NULL) {
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gc = calloc(1, sizeof *gc);
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if (gc == NULL) {
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mt->error = errno;
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XML_StopParser(mt->parser, 0);
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warn("Cannot allocate memory during processing of '%s' "
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"element", name);
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return;
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}
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gc->lg_name = strdup(name);
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if (gc->lg_name == NULL) {
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mt->error = errno;
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XML_StopParser(mt->parser, 0);
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warn("Cannot allocate memory during processing of '%s' "
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"element", name);
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return;
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}
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gc->lg_val = p;
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LIST_INSERT_HEAD(mt->config, gc, lg_config);
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return;
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}
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if (p != NULL) {
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#if DEBUG_LIBGEOM > 0
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printf("Unexpected XML: name=%s data=\"%s\"\n", name, p);
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#endif
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free(p);
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}
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if (!strcmp(name, "consumer") && mt->consumer != NULL) {
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mt->consumer = NULL;
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return;
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}
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if (!strcmp(name, "provider") && mt->provider != NULL) {
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mt->provider = NULL;
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return;
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}
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if (!strcmp(name, "geom") && mt->consumer != NULL) {
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return;
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}
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if (!strcmp(name, "geom") && mt->provider != NULL) {
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return;
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}
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if (!strcmp(name, "geom") && mt->geom != NULL) {
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mt->geom = NULL;
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return;
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}
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if (!strcmp(name, "class") && mt->geom != NULL) {
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return;
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}
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if (!strcmp(name, "class") && mt->class != NULL) {
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mt->class = NULL;
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return;
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}
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}
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static void
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CharData(void *userData , const XML_Char *s , int len)
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{
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struct mystate *mt;
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const char *b, *e;
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mt = userData;
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b = s;
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e = s + len - 1;
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while (isspace(*b) && b < e)
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b++;
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while (isspace(*e) && e > b)
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e--;
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if (e != b || (*b && !isspace(*b)))
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sbuf_bcat(mt->sbuf[mt->level], b, e - b + 1);
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}
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struct gident *
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geom_lookupid(struct gmesh *gmp, const void *id)
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{
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struct gident *gip;
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for (gip = gmp->lg_ident; gip->lg_id != NULL; gip++)
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if (gip->lg_id == id)
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return (gip);
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return (NULL);
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}
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int
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geom_xml2tree(struct gmesh *gmp, char *p)
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{
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XML_Parser parser;
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struct mystate *mt;
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struct gclass *cl;
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struct ggeom *ge;
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struct gprovider *pr;
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struct gconsumer *co;
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int error, i;
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memset(gmp, 0, sizeof *gmp);
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LIST_INIT(&gmp->lg_class);
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parser = XML_ParserCreate(NULL);
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if (parser == NULL)
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return (ENOMEM);
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mt = calloc(1, sizeof *mt);
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if (mt == NULL) {
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XML_ParserFree(parser);
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return (ENOMEM);
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}
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mt->mesh = gmp;
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mt->parser = parser;
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error = 0;
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XML_SetUserData(parser, mt);
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XML_SetElementHandler(parser, StartElement, EndElement);
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XML_SetCharacterDataHandler(parser, CharData);
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i = XML_Parse(parser, p, strlen(p), 1);
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if (mt->error != 0)
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error = mt->error;
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else if (i != 1) {
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error = XML_GetErrorCode(parser) == XML_ERROR_NO_MEMORY ?
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ENOMEM : EILSEQ;
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}
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XML_ParserFree(parser);
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if (error != 0) {
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free(mt);
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return (error);
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}
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gmp->lg_ident = calloc(sizeof *gmp->lg_ident, mt->nident + 1);
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free(mt);
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if (gmp->lg_ident == NULL)
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return (ENOMEM);
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i = 0;
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/* Collect all identifiers */
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LIST_FOREACH(cl, &gmp->lg_class, lg_class) {
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gmp->lg_ident[i].lg_id = cl->lg_id;
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gmp->lg_ident[i].lg_ptr = cl;
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gmp->lg_ident[i].lg_what = ISCLASS;
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i++;
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LIST_FOREACH(ge, &cl->lg_geom, lg_geom) {
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gmp->lg_ident[i].lg_id = ge->lg_id;
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gmp->lg_ident[i].lg_ptr = ge;
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gmp->lg_ident[i].lg_what = ISGEOM;
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i++;
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LIST_FOREACH(pr, &ge->lg_provider, lg_provider) {
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gmp->lg_ident[i].lg_id = pr->lg_id;
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gmp->lg_ident[i].lg_ptr = pr;
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gmp->lg_ident[i].lg_what = ISPROVIDER;
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i++;
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}
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LIST_FOREACH(co, &ge->lg_consumer, lg_consumer) {
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gmp->lg_ident[i].lg_id = co->lg_id;
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gmp->lg_ident[i].lg_ptr = co;
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gmp->lg_ident[i].lg_what = ISCONSUMER;
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i++;
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}
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}
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}
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/* Substitute all identifiers */
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LIST_FOREACH(cl, &gmp->lg_class, lg_class) {
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LIST_FOREACH(ge, &cl->lg_geom, lg_geom) {
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ge->lg_class =
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geom_lookupid(gmp, ge->lg_class)->lg_ptr;
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LIST_FOREACH(pr, &ge->lg_provider, lg_provider) {
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pr->lg_geom =
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geom_lookupid(gmp, pr->lg_geom)->lg_ptr;
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}
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LIST_FOREACH(co, &ge->lg_consumer, lg_consumer) {
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co->lg_geom =
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geom_lookupid(gmp, co->lg_geom)->lg_ptr;
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if (co->lg_provider != NULL) {
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co->lg_provider =
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geom_lookupid(gmp,
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co->lg_provider)->lg_ptr;
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LIST_INSERT_HEAD(
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&co->lg_provider->lg_consumers,
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co, lg_consumers);
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}
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}
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}
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}
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return (0);
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}
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int
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geom_gettree(struct gmesh *gmp)
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{
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char *p;
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int error;
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p = geom_getxml();
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if (p == NULL)
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return (errno);
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error = geom_xml2tree(gmp, p);
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free(p);
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return (error);
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}
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static void
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delete_config(struct gconf *gp)
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{
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struct gconfig *cf;
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for (;;) {
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cf = LIST_FIRST(gp);
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if (cf == NULL)
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return;
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LIST_REMOVE(cf, lg_config);
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free(cf->lg_name);
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free(cf->lg_val);
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free(cf);
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}
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}
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void
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geom_deletetree(struct gmesh *gmp)
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{
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struct gclass *cl;
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struct ggeom *ge;
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struct gprovider *pr;
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struct gconsumer *co;
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free(gmp->lg_ident);
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gmp->lg_ident = NULL;
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for (;;) {
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cl = LIST_FIRST(&gmp->lg_class);
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if (cl == NULL)
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break;
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LIST_REMOVE(cl, lg_class);
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delete_config(&cl->lg_config);
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if (cl->lg_name) free(cl->lg_name);
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for (;;) {
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ge = LIST_FIRST(&cl->lg_geom);
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if (ge == NULL)
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break;
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LIST_REMOVE(ge, lg_geom);
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delete_config(&ge->lg_config);
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if (ge->lg_name) free(ge->lg_name);
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for (;;) {
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pr = LIST_FIRST(&ge->lg_provider);
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if (pr == NULL)
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break;
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LIST_REMOVE(pr, lg_provider);
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delete_config(&pr->lg_config);
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if (pr->lg_name) free(pr->lg_name);
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if (pr->lg_mode) free(pr->lg_mode);
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free(pr);
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}
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for (;;) {
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co = LIST_FIRST(&ge->lg_consumer);
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if (co == NULL)
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break;
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LIST_REMOVE(co, lg_consumer);
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delete_config(&co->lg_config);
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if (co->lg_mode) free(co->lg_mode);
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free(co);
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}
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free(ge);
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}
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free(cl);
|
|
}
|
|
}
|