Function ifwi_dir_replace

util/cbfstool/ifwitool.c:1697–1788

}

static enum ifwi_ret ifwi_dir_replace(int type)
{
	if (!(subparts[type].attr & CONTAINS_DIR)) {
		ERROR("Sub-Partition %s(%d) does not support dir ops.\n",
		      subparts[type].name, type);
		return COMMAND_ERR;
	}

	if (!param.dentry_name) {
		ERROR("%s: -e option required.\n", __func__);
		return COMMAND_ERR;
	}

	struct buffer subpart_dir_buf;
	parse_subpart_dir(&subpart_dir_buf, &ifwi_image.subpart_buf[type],
			  subparts[type].name);

	uint32_t i;
	struct subpart_dir *s = buffer_get(&subpart_dir_buf);

	for (i = 0; i < s->h.num_entries; i++) {
		if (!strcmp((char *)s->e[i].name, param.dentry_name))
			break;
	}

	if (i == s->h.num_entries) {
		ERROR("Entry %s not found in subpartition for %s.\n",
		      param.dentry_name, param.subpart_name);
		exit(-1);
	}

	struct buffer b;
	if (buffer_from_file(&b, param.file_name)) {
		ERROR("Failed to read %s\n", param.file_name);
		exit(-1);
	}

	struct buffer dst;
	size_t dst_size = buffer_size(&ifwi_image.subpart_buf[type]) +
				      buffer_size(&b) - s->e[i].length;
	size_t subpart_start = s->e[i].offset;
	size_t subpart_end = s->e[i].offset + s->e[i].length;

	alloc_buffer(&dst, dst_size, ifwi_image.subpart_buf[type].name);

	uint8_t *src_data = buffer_get(&ifwi_image.subpart_buf[type]);
	uint8_t *dst_data = buffer_get(&dst);
	size_t curr_offset = 0;

	/* Copy data before the sub-partition entry. */
	memcpy(dst_data + curr_offset, src_data, subpart_start);
	curr_offset += subpart_start;

	/* Copy sub-partition entry. */
	memcpy(dst_data + curr_offset, buffer_get(&b), buffer_size(&b));
	curr_offset += buffer_size(&b);

	/* Copy remaining data. */