jehanne/sys/src/cmd/exportfs/exportfs.h

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/*
* 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_t 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 */
uint8_t *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 */
int64_t 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_t pid;
int busy;
Proc *next;
};
struct Qidtab
{
int ref;
int type;
int dev;
int64_t path;
int64_t uniqpath;
Qidtab *next;
};
enum
{
MAXPROC = 50,
FHASHSIZE = 64,
Nr_workbufs = 50,
Fidchunk = 1000,
Npsmpt = 32,
Nqidbits = 5,
Nqidtab = (1<<Nqidbits),
};
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 uint32_t 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(uint32_t);
int readmessage(int, char*, int);
void exclusions(void);
int excludefile(char*);
int preaddir(Fid*, uint8_t*, int, int64_t);