diff options
author | Juan Zea <juan.zea@qindel.com> | 2017-12-15 12:21:20 +0300 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-01-02 22:33:26 +0300 |
commit | e0362688b4faf4d0d03e872c7ed6b9286add381d (patch) | |
tree | 15fe7e8ec47c5c0d839a7d5bb211c3aa83d1927b /tools | |
parent | 3f54a6d41d443117cb4e077b2a064b430f9fc7c8 (diff) | |
download | linux-e0362688b4faf4d0d03e872c7ed6b9286add381d.tar.xz |
usbip: fix usbip bind writing random string after command in match_busid
commit 544c4605acc5ae4afe7dd5914147947db182f2fb upstream.
usbip bind writes commands followed by random string when writing to
match_busid attribute in sysfs, caused by using full variable size
instead of string length.
Signed-off-by: Juan Zea <juan.zea@qindel.com>
Acked-by: Shuah Khan <shuahkh@osg.samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'tools')
-rw-r--r-- | tools/usb/usbip/src/utils.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/tools/usb/usbip/src/utils.c b/tools/usb/usbip/src/utils.c index 2b3d6d235015..3d7b42e77299 100644 --- a/tools/usb/usbip/src/utils.c +++ b/tools/usb/usbip/src/utils.c @@ -30,6 +30,7 @@ int modify_match_busid(char *busid, int add) 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, @@ -37,12 +38,14 @@ int modify_match_busid(char *busid, int add) attr_name); if (add) - snprintf(command, SYSFS_BUS_ID_SIZE + 4, "add %s", busid); + cmd_size = snprintf(command, SYSFS_BUS_ID_SIZE + 4, "add %s", + busid); else - snprintf(command, SYSFS_BUS_ID_SIZE + 4, "del %s", busid); + cmd_size = snprintf(command, SYSFS_BUS_ID_SIZE + 4, "del %s", + busid); rc = write_sysfs_attribute(match_busid_attr_path, command, - sizeof(command)); + cmd_size); if (rc < 0) { dbg("failed to write match_busid: %s", strerror(errno)); return -1; |