On Mon, Aug 16, 2010 at 05:52:41PM +0530, Ravi Gupta wrote: > Hi, > > I have defined a header file for ioctls macros definitions. I am including > it in both, my user space application as well as in my device driver. Now > there are some macros that I want to be visible only in device drive and > some only in user space application. Is there any set of macros defined in > linux for such purpose? This is my present header file > > gpio_ioctl.h > > #ifndef _GPIO_IOCTL_H_ > #define _GPIO_IOCTL_H_ > > /* > * Ioctl definitions > */ > > /* Use 250 as type/magic number */ > #define GPIO_IOC_MAGIC 250 > #define GPIO_READ _IOW (GPIO_IOC_MAGIC, 0, int) > #define GPIO_WRITE _IOW (GPIO_IOC_MAGIC, 1, int) > #define GPIO_IOC_MAXNR 2 > > > #ifdef _DEVICE_DRIVE_ ---> these macros should not be visible in user space > application > #define ... > ... > .. > #endif > > #ifdef _USER_SPACE_ ---> these macros should not be visible in device driver > i.e kernel space > #define ... > ... > .. > > #endif /*_GPIO_IOCTL_H_ */ >
#ifdef __KERNEL__ /* kernel only definitions here */ #else /* userspace only definitions here */ #endif See tons of headers in include/linux/ for examples. Ira _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
