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SerialImp.c:RXTXCommDriver(testRead) - ignore tcgetattr() failures for hidraw device #263

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SerialImp.c:RXTXCommDriver(testRead) - ignore tcgetattr() failures for hidraw device #263

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13 changes: 7 additions & 6 deletions src/main/c/src/SerialImp.c
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Original file line number Diff line number Diff line change
Expand Up @@ -4458,11 +4458,6 @@ JNIEXPORT jboolean JNICALL RXTXCommDriver(testRead)(
int saved_flags;
struct termios saved_termios;

if (tcgetattr(fd, &ttyset) < 0) {
ret = JNI_FALSE;
goto END;
}

/* save, restore later */
if ( ( saved_flags = fcntl(fd, F_GETFL ) ) < 0 )
{
Expand All @@ -4471,6 +4466,12 @@ JNIEXPORT jboolean JNICALL RXTXCommDriver(testRead)(
goto END;
}

if (tcgetattr(fd, &ttyset) < 0) {
if (errno == EINVAL || errno == ENOTTY) goto NOT_TERMINAL;
ret = JNI_FALSE;
goto END;
}

memcpy( &saved_termios, &ttyset, sizeof( struct termios ) );

if ( fcntl( fd, F_SETFL, O_NONBLOCK ) < 0 )
Expand All @@ -4490,7 +4491,7 @@ JNIEXPORT jboolean JNICALL RXTXCommDriver(testRead)(
tcsetattr( fd, TCSANOW, &saved_termios );
goto END;
}

NOT_TERMINAL:
/*

The following may mess up if both EAGAIN and EWOULDBLOCK
Expand Down