// SPDX-License-Identifier: GPL-2.0-or-later/* * Copyright (C) 2011 matt mooney <mfm@muteddisk.com> *               2005-2007 Takahiro Hirofuchi */ #include <errno.h>#include <stdio.h>#include <string.h> #include "usbip_common.h"#include "utils.h"#include "sysfs_utils.h" int modify_match_busid(char *busid, int add){	char attr_name[] = "match_busid";	char command[SYSFS_BUS_ID_SIZE + 4];	char match_busid_attr_path[SYSFS_PATH_MAX];	int rc;	int cmd_size; 	snprintf(match_busid_attr_path, sizeof(match_busid_attr_path),		 "%s/%s/%s/%s/%s/%s", SYSFS_MNT_PATH, SYSFS_BUS_NAME,		 SYSFS_BUS_TYPE, SYSFS_DRIVERS_NAME, USBIP_HOST_DRV_NAME,		 attr_name); 	if (add)		cmd_size = snprintf(command, SYSFS_BUS_ID_SIZE + 4, "add %s",				    busid);	else		cmd_size = snprintf(command, SYSFS_BUS_ID_SIZE + 4, "del %s",				    busid); 	rc = write_sysfs_attribute(match_busid_attr_path, command,				   cmd_size);	if (rc < 0) {		dbg("failed to write match_busid: %s", strerror(errno));		return -1;	} 	return 0;}