/* * 'kernel.h' contains some often-used function prototypes etc */void verify_area(void * addr,int count);volatile void panic(const char * str);int printf(const char * fmt, ...);int printk(const char * fmt, ...);int tty_write(unsigned ch,char * buf,int count);void *malloc(unsigned int len);void free_s(void *obj, int size);#define free(x)  free_s((x), 0)/* * This is defined as a macro, but at some point this might become a * real subroutine that sets a flag if it returns true (to do * BSD-style accounting where the process is flagged if it uses root * privs).  The implication of this is that you should do normal * permissions checks first, and check suser() last. */#define suser() (current->euid == 0)