/*  * This file is part of the UCB release of Plan 9. It is subject to the license * terms in the LICENSE file found in the top-level directory of this * distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No * part of the UCB release of Plan 9, including this file, may be copied, * modified, propagated, or distributed except according to the terms contained * in the LICENSE file. */ typedef	struct	Chan	Chan;typedef struct	Command	Command;typedef	struct	Conf	Conf;typedef	struct	Cons	Cons;typedef struct	Devcall	Devcall; #define MAXBUFSIZE	(16*1024)	/* max. buffer size */ #include "portdat.h" struct	Chan{	int	chan;			/* fd request came in on */	QLock rlock, wlock;		/* lock for reading/writing messages on chan */	int	type;	int	flags;	long	whotime;	File*	flist;			/* base of file structures */	Lock	flock;			/* manipulate flist */	RWLock	reflock;		/* lock for Tflush */	int	msize;			/* version */	int	authed;		/* someone other than ``none'' has authed */ /* 9p1 auth */	uchar	chal[8];	uchar	rchal[8];	int	idoffset;	int	idvec;	Lock	idlock;}; /* * console cons.flag flags */enum{	Fchat	= (1<<0),	/* print out filesys rpc traffic */	Fuid	= (1<<2),	/* print out uids */				/* debugging flags for drivers */}; struct	Cons{	int	flags;		/* overall flags for all channels */	int	uid;		/* botch -- used to get uid on cons_create */	int	gid;		/* botch -- used to get gid on cons_create */	int	allow;		/* no-protection flag */	long	offset;		/* used to read files, c.f. fchar */	char*	arg;		/* pointer to remaining line */ 	Chan	*chan;	/* console channel */	Chan	*srvchan;	/* local server channel */ 	Filter	work;		/* thruput in messages */	Filter	rate;		/* thruput in bytes */	Filter	bhit;		/* getbufs that hit */	Filter	bread;		/* getbufs that miss and read */	Filter	binit;		/* getbufs that miss and dont read */	Filter	tags[MAXTAG];	/* reads of each type of block */}; struct	Conf{	ulong	niobuf;		/* number of iobufs to allocate */	ulong	nuid;		/* distinct uids */	ulong	uidspace;	/* space for uid names -- derrived from nuid */	ulong	gidspace;	/* space for gid names -- derrived from nuid */	ulong	nserve;		/* server processes */	ulong	nfile;		/* number of fid -- system wide */	ulong	nwpath;		/* number of active paths, derrived from nfile */	ulong	bootsize;	/* number of bytes reserved for booting */}; struct	Command{	char	*string;	void	(*func)(void);	char	*args;}; struct Devcall{	void	(*init)(Device);	void	(*ream)(Device);	int	(*check)(Device);	long	(*super)(Device);	long	(*root)(Device);	long	(*size)(Device);	int	(*read)(Device, long, void*);	int	(*write)(Device, long, void*);}; /* * device types */enum{	Devnone 	= 0,	Devwren,	MAXDEV}; /* * file systems */enum{	MAXFILSYS = 4}; /* * should be in portdat.h */#define	QPDIR	0x80000000L#define	QPNONE	0#define	QPROOT	1#define	QPSUPER	2 /* * perm argument in p9 create */#define	PDIR	(1L<<31)	/* is a directory */#define	PAPND	(1L<<30)	/* is append only */#define	PLOCK	(1L<<29)	/* is locked on open */ #define	NOF	(-1) #define	FID1		1#define	FID2		2#define	FID3		3 #define SECOND(n) 	(n)#define MINUTE(n)	(n*SECOND(60))#define HOUR(n)		(n*MINUTE(60))#define DAY(n)		(n*HOUR(24))#define	TLOCK		MINUTE(5) #define	CHAT(cp)	(chat)#define	QID9P1(a,b)	(Qid9p1){a,b} extern	Uid*	uid;extern	char*	uidspace;extern	short*	gidspace;extern	char*	errstring[MAXERR];extern	Chan*	chans;extern	RWLock	mainlock;extern	long	boottime;extern	Tlock	*tlocks;extern	Device	devnone;extern	Filsys	filesys[];extern	char	service[];extern	char*	tagnames[];extern	Conf	conf;extern	Cons	cons;extern	Command	command[];extern	Chan	*chan;extern	Devcall	devcall[];extern	char	*progname;extern	char	*procname;extern	long	niob;extern	long	nhiob;extern	Hiob	*hiob;extern	int	chat;extern	int	writeallow;extern	int	wstatallow;extern	int	allownone;extern	int	noatime;extern	int	writegroup; extern Lock wpathlock;