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/*
* Copyright (c) 2016-2017, Linaro Ltd.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* 3. Neither the name of the copyright holder nor the names of its contributors
* may be used to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <errno.h>
#include <string.h>
#include <libxml/parser.h>
#include <libxml/tree.h>
#include "patch.h"
#include "qdl.h"
static struct patch *patches;
static struct patch *patches_last;
int patch_load(const char *patch_file)
{
struct patch *patch;
xmlNode *node;
xmlNode *root;
xmlDoc *doc;
int errors;
doc = xmlReadFile(patch_file, NULL, 0);
if (!doc) {
fprintf(stderr, "[PATCH] failed to parse %s\n", patch_file);
return -EINVAL;
}
root = xmlDocGetRootElement(doc);
for (node = root->children; node ; node = node->next) {
if (node->type != XML_ELEMENT_NODE)
continue;
if (xmlStrcmp(node->name, (xmlChar*)"patch")) {
fprintf(stderr, "[PATCH] unrecognized tag \"%s\", ignoring\n", node->name);
continue;
}
errors = 0;
patch = calloc(1, sizeof(struct patch));
patch->sector_size = attr_as_unsigned(node, "SECTOR_SIZE_IN_BYTES", &errors);
patch->byte_offset = attr_as_unsigned(node, "byte_offset", &errors);
patch->filename = attr_as_string(node, "filename", &errors);
patch->partition = attr_as_unsigned(node, "physical_partition_number", &errors);
patch->size_in_bytes = attr_as_unsigned(node, "size_in_bytes", &errors);
patch->start_sector = attr_as_string(node, "start_sector", &errors);
patch->value = attr_as_string(node, "value", &errors);
patch->what = attr_as_string(node, "what", &errors);
if (errors) {
fprintf(stderr, "[PATCH] errors while parsing patch\n");
free(patch);
continue;
}
if (patches) {
patches_last->next = patch;
patches_last = patch;
} else {
patches = patch;
patches_last = patch;
}
}
xmlFreeDoc(doc);
return 0;
}
int patch_execute(struct qdl_device *qdl, int (*apply)(struct qdl_device *qdl, struct patch *patch))
{
struct patch *patch;
int ret;
for (patch = patches; patch; patch = patch->next) {
if (strcmp(patch->filename, "DISK"))
continue;
ret = apply(qdl, patch);
if (ret)
return ret;
}
return 0;
}
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