ioctl_devfs 28 tools/wmi/dell-smbios-example.c static const char *ioctl_devfs = "/dev/wmi/dell-smbios"; ioctl_devfs 47 tools/wmi/dell-smbios-example.c fd = open(ioctl_devfs, O_NONBLOCK); ioctl_devfs 147 tools/wmi/dell-smbios-example.c f = fopen(ioctl_devfs, "rb");