162306a36Sopenharmony_ci// SPDX-License-Identifier: GPL-2.0-or-later 262306a36Sopenharmony_ci/* 362306a36Sopenharmony_ci * Copyright (C) 2011 matt mooney <mfm@muteddisk.com> 462306a36Sopenharmony_ci * 2005-2007 Takahiro Hirofuchi 562306a36Sopenharmony_ci */ 662306a36Sopenharmony_ci 762306a36Sopenharmony_ci#include <errno.h> 862306a36Sopenharmony_ci#include <stdio.h> 962306a36Sopenharmony_ci#include <string.h> 1062306a36Sopenharmony_ci 1162306a36Sopenharmony_ci#include "usbip_common.h" 1262306a36Sopenharmony_ci#include "utils.h" 1362306a36Sopenharmony_ci#include "sysfs_utils.h" 1462306a36Sopenharmony_ci 1562306a36Sopenharmony_ciint modify_match_busid(char *busid, int add) 1662306a36Sopenharmony_ci{ 1762306a36Sopenharmony_ci char attr_name[] = "match_busid"; 1862306a36Sopenharmony_ci char command[SYSFS_BUS_ID_SIZE + 4]; 1962306a36Sopenharmony_ci char match_busid_attr_path[SYSFS_PATH_MAX]; 2062306a36Sopenharmony_ci int rc; 2162306a36Sopenharmony_ci int cmd_size; 2262306a36Sopenharmony_ci 2362306a36Sopenharmony_ci snprintf(match_busid_attr_path, sizeof(match_busid_attr_path), 2462306a36Sopenharmony_ci "%s/%s/%s/%s/%s/%s", SYSFS_MNT_PATH, SYSFS_BUS_NAME, 2562306a36Sopenharmony_ci SYSFS_BUS_TYPE, SYSFS_DRIVERS_NAME, USBIP_HOST_DRV_NAME, 2662306a36Sopenharmony_ci attr_name); 2762306a36Sopenharmony_ci 2862306a36Sopenharmony_ci if (add) 2962306a36Sopenharmony_ci cmd_size = snprintf(command, SYSFS_BUS_ID_SIZE + 4, "add %s", 3062306a36Sopenharmony_ci busid); 3162306a36Sopenharmony_ci else 3262306a36Sopenharmony_ci cmd_size = snprintf(command, SYSFS_BUS_ID_SIZE + 4, "del %s", 3362306a36Sopenharmony_ci busid); 3462306a36Sopenharmony_ci 3562306a36Sopenharmony_ci rc = write_sysfs_attribute(match_busid_attr_path, command, 3662306a36Sopenharmony_ci cmd_size); 3762306a36Sopenharmony_ci if (rc < 0) { 3862306a36Sopenharmony_ci dbg("failed to write match_busid: %s", strerror(errno)); 3962306a36Sopenharmony_ci return -1; 4062306a36Sopenharmony_ci } 4162306a36Sopenharmony_ci 4262306a36Sopenharmony_ci return 0; 4362306a36Sopenharmony_ci} 44