Changeset 65529 in vbox for trunk/include/VBox

Timestamp:

Jan 31, 2017 8:00:40 AM (8 years ago)

Author:

vboxsync

Message:

USB: bugref:8752 Fix USBLibPurgeEncoding and always purge the device strings when creating a filter in userspace too to match what the driver presents to the filter manager

File:

• trunk/include/VBox/usblib.h (modified) (2 diffs)

trunk/include/VBox/usblib.h

@@ -124 +124 @@
  * @returns String length (excluding terminator).
  * @param   psz                 The string to purge.
+ *
+ * @remarks The return string may be shorter than the input, left over space
+ *          after the end of the string will be filled with zeros.
  */
 DECLINLINE(size_t) USBLibPurgeEncoding(char *psz)
@@ -156 +159 @@
                         break;
                 }
+
+                /* Wind back to the zero terminator and zero fill any gap to make
+                   USBFilterValidate happy.  (offSrc is at zero terminator too.) */
+                offDst--;
+                while (offSrc > offDst)
+                    psz[offSrc--] = '\0';
+
                 return offDst;
             }