user.h

这是一个同样来自贝尔实验室的和UNIX有着渊源的操作系统, 其简洁的设计和实现易于我们学习和理解

/* sys calls */
#define	bind	sysbind
#define	chdir	syschdir
#define	close	sysclose
#define create	syscreate
#define dup	sysdup
#define export	sysexport
#define fstat	sysfstat
#define fwstat	sysfwstat
#define mount	sysmount
#define	open	sysopen
#define read	sysread
#define remove	sysremove
#define seek	sysseek
#define stat	sysstat
#define	write	syswrite
#define wstat	syswstat
#define unmount	sysunmount
#define pipe	syspipe
#define rendezvous	sysrendezvous
#define getpid	sysgetpid
#define time systime
#define nsec sysnsec
#define pread syspread
#define pwrite syspwrite
#undef sleep
#define	sleep	osmsleep

extern	int	bind(char*, char*, int);
extern	int	chdir(char*);
extern	int	close(int);
extern	int	create(char*, int, ulong);
extern	int	dup(int, int);
extern  int	export(int);
extern	int	fstat(int, uchar*, int);
extern	int	fwstat(int, uchar*, int);
extern	int	mount(int, int, char*, int, char*);
extern	int	unmount(char*, char*);
extern	int	open(char*, int);
extern	int	pipe(int*);
extern	long	read(int, void*, long);
extern	long	readn(int, void*, long);
extern	int	remove(char*);
extern	vlong	seek(int, vlong, int);
extern	int	stat(char*, uchar*, int);
extern	long	write(int, void*, long);
extern	int	wstat(char*, uchar*, int);
extern	void	werrstr(char* ,...);

extern	Dir	*dirstat(char*);
extern	Dir	*dirfstat(int);
extern	int	dirwstat(char*, Dir*);
extern	int	dirfwstat(int, Dir*);
extern	long	dirread(int, Dir*, long);

extern	int	lfdfd(int);

/*
 *  network dialing and authentication
 */
#define NETPATHLEN 40
extern	int	accept(int, char*);
extern	int	announce(char*, char*);
extern	int	dial(char*, char*, char*, int*);
extern	int	hangup(int);
extern	int	listen(char*, char*);
extern	char *netmkaddr(char*, char*, char*);
extern	int	reject(int, char*, char*);

extern 	char*	argv0;

extern	ulong	truerand(void);
extern	int	pushssl(int, char*, char*, char*, int*);
extern	int	iounit(int);
extern	long	pread(int, void*, long, vlong);
extern	long	pwrite(int, void*, long, vlong);
extern	void*	rendezvous(void*, void*);
extern	int	kproc(char*, void(*)(void*), void*);
extern	int	getpid(void);
extern	void	panic(char*, ...);
extern	void	sleep(int);
extern	void	osyield(void);
extern	void	setmalloctag(void*, uintptr);
extern	int	errstr(char*, uint);
extern	int	rerrstr(char*, uint);
extern	int	encrypt(void*, void*, int);
extern	int	decrypt(void*, void*, int);
extern	void	qlock(QLock*);
extern	void	qunlock(QLock*);
extern	vlong	nsec(void);
extern	void	lock(Lock*);
extern	void	unlock(Lock*);
extern	int	iprint(char*, ...);