Workaround for errno being overwritten by JVM (Linux)

manuelbl · Oct 23, 2022 · 77801a4 · 77801a4
1 parent 2e939fe
commit 77801a4
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/java-does-usb/src/main/java/net/codecrete/usb/linux/LinuxUSBDevice.java b/java-does-usb/src/main/java/net/codecrete/usb/linux/LinuxUSBDevice.java
@@ -226,6 +226,9 @@ public void transferOut(int endpointNumber, byte[] data, int timeout) {
                 int err = IO.getErrno();
                 if (err == errno.ETIMEDOUT())
                     throw new USBTimeoutException("Transfer out aborted due to timeout");
+                // TODO: remove below code if 'errno' is no longer overwritten by JVM
+                if (err == 2)
+                    throw new USBTimeoutException("Transfer in aborted due to timeout");
                 throwException(err, "USB OUT transfer on endpoint %d failed", endpointNumber);
             }
         }
@@ -246,6 +249,9 @@ public byte[] transferIn(int endpointNumber, int timeout) {
                 int err = IO.getErrno();
                 if (err == errno.ETIMEDOUT())
                     throw new USBTimeoutException("Transfer in aborted due to timeout");
+                // TODO: remove below code if 'errno' is no longer overwritten by JVM
+                if (err == 2)
+                    throw new USBTimeoutException("Transfer in aborted due to timeout");
                 throwException(err, "USB IN transfer on endpoint %d failed", endpointNumber);
             }