Merge "Only allow system to write to existing input nodes."

/dev/tty0                 0660   root       system

/dev/graphics/*           0660   root       graphics

/dev/msm_hw3dm            0660   system     graphics

/dev/input/*              0660   root       input

/dev/input/*              0640   system     input

/dev/eac                  0660   root       audio

/dev/cam                  0660   root       camera

/dev/pmem                 0660   system     graphics

    char idstr[80];

    struct input_id id;

    fd = open(device, O_RDWR);

    fd = open(device, O_RDONLY);

    if(fd < 0) {

        if(print_flags & PRINT_DEVICE_ERRORS)

            fprintf(stderr, "could not open %s, %s\n", device, strerror(errno));