/* * functions (possibly) linked in, complete, from libc. */ /* * mem routines */extern	void	*memccpy(void*, void*, int, long);extern	void	*memset(void*, int, long);extern	int	memcmp(void*, void*, long);extern	void	*memmove(void*, void*, long);extern	void	*memchr(void*, int, long); /* * string routines */extern	char	*strcat(char*, char*);extern	char	*strchr(char*, char);extern	char	*strrchr(char*, char);extern	int	strcmp(char*, char*);extern	char	*strcpy(char*, char*);extern	char	*strncat(char*, char*, long);extern	char	*strncpy(char*, char*, long);extern	int	strncmp(char*, char*, long);extern	long	strlen(char*);extern	char*	strstr(char*, char*);extern	int	atoi(char*); enum{	UTFmax		= 3,		/* maximum bytes per rune */	Runesync	= 0x80,		/* cannot represent part of a UTF sequence (<) */	Runeself	= 0x80,		/* rune and UTF sequences are the same (<) */	Runeerror	= 0xFFFD,	/* decoding error in UTF */	Runemax	= 0xFFFF,	/* 16 bit rune */}; /* * rune routines */extern	int	runetochar(char*, Rune*);extern	int	chartorune(Rune*, char*);extern	char*	utfrune(char*, long);extern	int	utflen(char*);extern	int	runelen(long); extern	int	abs(int); /* * print routines */typedef struct Cconv Fconv;extern	char*	donprint(char*, char*, char*, void*);extern	int	sprint(char*, char*, ...);extern	char*	seprint(char*, char*, char*, ...);extern	int	snprint(char*, int, char*, ...);extern	int	print(char*, ...); /* * one-of-a-kind */extern	char*	cleanname(char*);extern	uintptr	getcallerpc(void*);extern	long	strtol(char*, char**, int);extern	ulong	strtoul(char*, char**, int);extern	vlong	strtoll(char*, char**, int);extern	uvlong	strtoull(char*, char**, int);extern	char	etext[];extern	char	edata[];extern	char	end[];extern	int	getfields(char*, char**, int, int, char*); /* * Syscall data structures */#define	MORDER	0x0003	/* mask for bits defining order of mounting */#define	MREPL	0x0000	/* mount replaces object */#define	MBEFORE	0x0001	/* mount goes before others in union directory */#define	MAFTER	0x0002	/* mount goes after others in union directory */#define	MCREATE	0x0004	/* permit creation in mounted directory */#define	MCACHE	0x0010	/* cache some data */#define	MMASK	0x001F	/* all bits on */ #define	OREAD	0	/* open for read */#define	OWRITE	1	/* write */#define	ORDWR	2	/* read and write */#define	OEXEC	3	/* execute, == read but check execute permission */#define	OTRUNC	16	/* or'ed in (except for exec), truncate file first */#define	OCEXEC	32	/* or'ed in, close on exec */#define	ORCLOSE	64	/* or'ed in, remove on close */ #define	NCONT	0	/* continue after note */#define	NDFLT	1	/* terminate after note */#define	NSAVE	2	/* clear note but hold state */#define	NRSTR	3	/* restore saved state */ typedef struct Qid	Qid;typedef struct Dir	Dir;typedef struct Waitmsg	Waitmsg; #define	ERRLEN		64#define	DIRLEN		116#define	NAMELEN		28 struct Qid{	ulong	path;	ulong	vers;}; struct Dir{	char	name[NAMELEN];	char	uid[NAMELEN];	char	gid[NAMELEN];	Qid	qid;	ulong	mode;	long	atime;	long	mtime;	vlong	length;	short	type;	short	dev;}; struct Waitmsg{	char	pid[12];	/* of loved one */	char	time[3*12];	/* of loved one and descendants */	char	msg[ERRLEN];}; /* *  locks */typedefstruct Lock {	int	val;} Lock; extern int	_tas(int*); extern	void	lock(Lock*);extern	void	unlock(Lock*);extern	int	canlock(Lock*);