| 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
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| 2 | /* |
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| 3 | * Copyright (C) 2011 matt mooney <mfm@muteddisk.com> |
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| 4 | * 2005-2007 Takahiro Hirofuchi |
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| 5 | */ |
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| 6 | |
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| 7 | #include <errno.h> |
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| 8 | #include <stdio.h> |
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| 9 | #include <string.h> |
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| 10 | |
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| 11 | #include "usbip_common.h" |
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| 12 | #include "utils.h" |
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| 13 | #include "sysfs_utils.h" |
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| 14 | |
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| 15 | int modify_match_busid(char *busid, int add) |
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| 16 | { |
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| 17 | char attr_name[] = "match_busid" ; |
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| 18 | char command[SYSFS_BUS_ID_SIZE + 4]; |
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| 19 | char match_busid_attr_path[SYSFS_PATH_MAX]; |
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| 20 | int rc; |
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| 21 | int cmd_size; |
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| 22 | |
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| 23 | snprintf(match_busid_attr_path, sizeof(match_busid_attr_path), |
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| 24 | "%s/%s/%s/%s/%s/%s" , SYSFS_MNT_PATH, SYSFS_BUS_NAME, |
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| 25 | SYSFS_BUS_TYPE, SYSFS_DRIVERS_NAME, USBIP_HOST_DRV_NAME, |
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| 26 | attr_name); |
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| 27 | |
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| 28 | if (add) |
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| 29 | cmd_size = snprintf(command, SYSFS_BUS_ID_SIZE + 4, "add %s" , |
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| 30 | busid); |
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| 31 | else |
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| 32 | cmd_size = snprintf(command, SYSFS_BUS_ID_SIZE + 4, "del %s" , |
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| 33 | busid); |
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| 34 | |
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| 35 | rc = write_sysfs_attribute(match_busid_attr_path, command, |
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| 36 | cmd_size); |
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| 37 | if (rc < 0) { |
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| 38 | dbg("failed to write match_busid: %s" , strerror(errno)); |
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| 39 | return -1; |
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| 40 | } |
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| 41 | |
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| 42 | return 0; |
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| 43 | } |
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| 44 | |
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