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https://github.com/linux-msm/qdl.git
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a3436e2b0a
Some device builds include patches with empty filenames. This change adds a check to ignore those patches and prevent segmentation faults. This approach ensures consistency with other Qualcomm tools, which also ignore such patches. Signed-off-by: Yvonne Kaire <ykaire@qti.qualcomm.com>
124 lines
2.7 KiB
C
124 lines
2.7 KiB
C
// SPDX-License-Identifier: BSD-3-Clause
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/*
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* Copyright (c) 2016-2017, Linaro Ltd.
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* All rights reserved.
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*/
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#include <errno.h>
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#include <string.h>
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#include <stdlib.h>
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#include <libxml/parser.h>
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#include <libxml/tree.h>
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#include <unistd.h>
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#include "patch.h"
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#include "qdl.h"
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static struct list_head patches = LIST_INIT(patches);
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static bool patches_loaded;
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int patch_load(const char *patch_file)
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{
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struct patch *patch;
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xmlNode *node;
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xmlNode *root;
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xmlDoc *doc;
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int errors;
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doc = xmlReadFile(patch_file, NULL, 0);
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if (!doc) {
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ux_err("failed to parse patch-type file \"%s\"\n", patch_file);
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return -EINVAL;
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}
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root = xmlDocGetRootElement(doc);
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for (node = root->children; node ; node = node->next) {
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if (node->type != XML_ELEMENT_NODE)
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continue;
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if (xmlStrcmp(node->name, (xmlChar *)"patch")) {
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ux_err("unrecognized tag \"%s\" in patch-type file, ignoring\n", node->name);
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continue;
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}
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errors = 0;
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patch = calloc(1, sizeof(struct patch));
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patch->sector_size = attr_as_unsigned(node, "SECTOR_SIZE_IN_BYTES", &errors);
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patch->byte_offset = attr_as_unsigned(node, "byte_offset", &errors);
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patch->filename = attr_as_string(node, "filename", &errors);
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patch->partition = attr_as_unsigned(node, "physical_partition_number", &errors);
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patch->size_in_bytes = attr_as_unsigned(node, "size_in_bytes", &errors);
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patch->start_sector = attr_as_string(node, "start_sector", &errors);
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patch->value = attr_as_string(node, "value", &errors);
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patch->what = attr_as_string(node, "what", &errors);
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if (errors) {
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ux_err("errors while parsing patch-type file \"%s\"\n", patch_file);
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free(patch);
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continue;
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}
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list_add(&patches, &patch->node);
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}
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xmlFreeDoc(doc);
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patches_loaded = true;
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return 0;
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}
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int patch_execute(struct qdl_device *qdl, int (*apply)(struct qdl_device *qdl, struct patch *patch))
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{
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struct patch *patch;
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unsigned int count = 0;
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unsigned int idx = 0;
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int ret;
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if (!patches_loaded)
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return 0;
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list_for_each_entry(patch, &patches, node) {
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if (!patch->filename)
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continue;
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if (!strcmp(patch->filename, "DISK"))
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count++;
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}
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list_for_each_entry(patch, &patches, node) {
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if (!patch->filename)
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continue;
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if (strcmp(patch->filename, "DISK"))
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continue;
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ret = apply(qdl, patch);
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if (ret)
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return ret;
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ux_progress("Applying patches", idx++, count);
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}
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ux_info("%d patches applied\n", idx);
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return 0;
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}
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void free_patches(void)
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{
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struct patch *patch;
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struct patch *next;
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list_for_each_entry_safe(patch, next, &patches, node) {
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free((void *)patch->filename);
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free((void *)patch->start_sector);
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free((void *)patch->value);
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free((void *)patch->what);
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free(patch);
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}
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list_init(&patches);
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}
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