11ccea77eSThomas Gleixner // SPDX-License-Identifier: GPL-2.0-or-later
2588b48caSValentina Manea /*
3588b48caSValentina Manea * Copyright (C) 2011 matt mooney <mfm@muteddisk.com>
4588b48caSValentina Manea * 2005-2007 Takahiro Hirofuchi
5588b48caSValentina Manea */
6588b48caSValentina Manea
7588b48caSValentina Manea #include <errno.h>
8588b48caSValentina Manea #include <stdio.h>
9588b48caSValentina Manea #include <string.h>
10588b48caSValentina Manea
11588b48caSValentina Manea #include "usbip_common.h"
12588b48caSValentina Manea #include "utils.h"
13588b48caSValentina Manea #include "sysfs_utils.h"
14588b48caSValentina Manea
modify_match_busid(char * busid,int add)15588b48caSValentina Manea int modify_match_busid(char *busid, int add)
16588b48caSValentina Manea {
17588b48caSValentina Manea char attr_name[] = "match_busid";
18588b48caSValentina Manea char command[SYSFS_BUS_ID_SIZE + 4];
19588b48caSValentina Manea char match_busid_attr_path[SYSFS_PATH_MAX];
20588b48caSValentina Manea int rc;
21544c4605SJuan Zea int cmd_size;
22588b48caSValentina Manea
23588b48caSValentina Manea snprintf(match_busid_attr_path, sizeof(match_busid_attr_path),
24588b48caSValentina Manea "%s/%s/%s/%s/%s/%s", SYSFS_MNT_PATH, SYSFS_BUS_NAME,
25588b48caSValentina Manea SYSFS_BUS_TYPE, SYSFS_DRIVERS_NAME, USBIP_HOST_DRV_NAME,
26588b48caSValentina Manea attr_name);
27588b48caSValentina Manea
28588b48caSValentina Manea if (add)
29544c4605SJuan Zea cmd_size = snprintf(command, SYSFS_BUS_ID_SIZE + 4, "add %s",
30544c4605SJuan Zea busid);
31588b48caSValentina Manea else
32544c4605SJuan Zea cmd_size = snprintf(command, SYSFS_BUS_ID_SIZE + 4, "del %s",
33544c4605SJuan Zea busid);
34588b48caSValentina Manea
35588b48caSValentina Manea rc = write_sysfs_attribute(match_busid_attr_path, command,
36544c4605SJuan Zea cmd_size);
37588b48caSValentina Manea if (rc < 0) {
38588b48caSValentina Manea dbg("failed to write match_busid: %s", strerror(errno));
39588b48caSValentina Manea return -1;
40588b48caSValentina Manea }
41588b48caSValentina Manea
42588b48caSValentina Manea return 0;
43588b48caSValentina Manea }
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