1 extern int kclose(int); 2 extern int kdial(char*, char*, char*, int*); 3 extern int kannounce(char*, char*); 4 extern void kerrstr(char*); 5 extern void kgerrstr(char*); 6 extern int kopen(char*, int); 7 extern long kread(int, void*, long); 8 extern long kseek(int, vlong, int); 9 extern long kwrite(int, void*, long); 10 extern void kwerrstr(char *, ...); 11