/*  * 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. */ /* * exportfs.h - definitions for exporting file server */ #define DEBUG		if(!dbg){}else fprint#define DFD		9#define fidhash(s)	fhash[s%FHASHSIZE] typedef struct Fsrpc Fsrpc;typedef struct Fid Fid;typedef struct File File;typedef struct Proc Proc;typedef struct Qidtab Qidtab; struct Fsrpc{	int	busy;		/* Work buffer has pending rpc to service */	uintptr	pid;		/* Pid of slave process executing the rpc */	int	canint;		/* Interrupt gate */	int	flushtag;	/* Tag on which to reply to flush */	Fcall	work;		/* Plan 9 incoming Fcall */	uchar	*buf;		/* Data buffer */}; struct Fid{	int	fid;		/* system fd for i/o */	File	*f;		/* File attached to this fid */	int	mode;	int	nr;		/* fid number */	int	mid;		/* Mount id */	Fid	*next;		/* hash link */ 	/* for preaddir -- ARRGH! */	Dir	*dir;		/* buffer for reading directories */	int	ndir;		/* number of entries in dir */	int	cdir;		/* number of consumed entries in dir */	int	gdir;		/* glue index */	vlong	offset;		/* offset in virtual directory */}; struct File{	char	*name;	int	ref;	Qid	qid;	Qidtab	*qidt;	int	inval;	File	*parent;	File	*child;	File	*childlist;}; struct Proc{	uintptr	pid;	int	busy;	Proc	*next;}; struct Qidtab{	int	ref;	int	type;	int	dev;	vlong	path;	vlong	uniqpath;	Qidtab	*next;}; enum{	MAXPROC		= 50,	FHASHSIZE	= 64,	Nr_workbufs 	= 50,	Fidchunk	= 1000,	Npsmpt		= 32,	Nqidbits		= 5,	Nqidtab		= (1<<Nqidbits),}; char Ebadfid[];char Enotdir[];char Edupfid[];char Eopen[];char Exmnt[];char Enomem[];char Emip[];char Enopsmt[]; Extern Fsrpc	*Workq;Extern int  	dbg;Extern File	*root;Extern File	*psmpt;Extern Fid	**fhash;Extern Fid	*fidfree;Extern Proc	*Proclist;Extern char	psmap[Npsmpt];Extern Qidtab	*qidtab[Nqidtab];Extern ulong	messagesize;Extern char	Enomem[];Extern int	srvfd;Extern char*	patternfile; /* File system protocol service procedures */void Xattach(Fsrpc*);void Xauth(Fsrpc*);void Xclunk(Fsrpc*); void Xcreate(Fsrpc*);void Xflush(Fsrpc*); void Xnop(Fsrpc*);void Xremove(Fsrpc*);void Xstat(Fsrpc*);void Xversion(Fsrpc*);void Xwalk(Fsrpc*);void Xwstat(Fsrpc*);void slave(Fsrpc*); void	reply(Fcall*, Fcall*, char*);Fid 	*getfid(int);int	freefid(int);Fid	*newfid(int);Fsrpc	*getsbuf(void);void	initroot(void);void	fatal(char*, ...);char*	makepath(File*, char*);File	*file(File*, char*);void	freefile(File*);void	slaveopen(Fsrpc*);void	slaveread(Fsrpc*);void	slavewrite(Fsrpc*);void	blockingslave(void);void	reopen(Fid *f);void	noteproc(int, char*);void	flushaction(void*, char*);void	pushfcall(char*);Qidtab* uniqueqid(Dir*);void	freeqid(Qidtab*);char*	estrdup(char*);void*	emallocz(uint);int	readmessage(int, char*, int);void	exclusions(void);int	excludefile(char*);int	preaddir(Fid*, uchar*, int, vlong);