#pragma	lib	"libb.a"#pragma	src	"/sys/src/libb" extern	void*	readf(char*f, void* buf, long l, long *ol);extern	char*	readfstr(char*f);extern	long	writef(char* f, void* buf, long len);extern	long	writefstr(char* f, char* s);extern	long	createf(char* f, void* buf, long len, ulong mode);extern	int	announcevol(int afd, char* addr, char* name, char* cnstr);extern	long	cmdoutput(char* cmd, char* out, long sz);extern	long	tcmdoutput(char* cmd, char* out, long sz);