145 lines
3.0 KiB
C
145 lines
3.0 KiB
C
/*
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* This file is part of the UCB release of Plan 9. It is subject to the license
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* terms in the LICENSE file found in the top-level directory of this
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* distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No
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* part of the UCB release of Plan 9, including this file, may be copied,
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* modified, propagated, or distributed except according to the terms contained
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* in the LICENSE file.
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*/
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/*
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* exportfs.h - definitions for exporting file server
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*/
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#define DEBUG if(!dbg){}else fprint
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#define DFD 9
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#define fidhash(s) fhash[s%FHASHSIZE]
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typedef struct Fsrpc Fsrpc;
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typedef struct Fid Fid;
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typedef struct File File;
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typedef struct Proc Proc;
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typedef struct Qidtab Qidtab;
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struct Fsrpc
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{
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int busy; /* Work buffer has pending rpc to service */
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uintptr_t pid; /* Pid of slave process executing the rpc */
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int canint; /* Interrupt gate */
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int flushtag; /* Tag on which to reply to flush */
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Fcall work; /* Plan 9 incoming Fcall */
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uint8_t *buf; /* Data buffer */
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};
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struct Fid
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{
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int fid; /* system fd for i/o */
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File *f; /* File attached to this fid */
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int mode;
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int nr; /* fid number */
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int mid; /* Mount id */
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Fid *next; /* hash link */
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/* for preaddir -- ARRGH! */
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Dir *dir; /* buffer for reading directories */
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int ndir; /* number of entries in dir */
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int cdir; /* number of consumed entries in dir */
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int gdir; /* glue index */
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int64_t offset; /* offset in virtual directory */
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};
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struct File
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{
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char *name;
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int ref;
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Qid qid;
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Qidtab *qidt;
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int inval;
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File *parent;
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File *child;
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File *childlist;
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};
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struct Proc
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{
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uintptr_t pid;
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int busy;
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Proc *next;
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};
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struct Qidtab
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{
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int ref;
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int type;
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int dev;
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int64_t path;
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int64_t uniqpath;
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Qidtab *next;
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};
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enum
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{
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MAXPROC = 50,
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FHASHSIZE = 64,
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Nr_workbufs = 50,
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Fidchunk = 1000,
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Npsmpt = 32,
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Nqidbits = 5,
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Nqidtab = (1<<Nqidbits),
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};
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extern Fsrpc *Workq;
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extern int dbg;
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extern File *root;
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extern File *psmpt;
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extern Fid **fhash;
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extern Fid *fidfree;
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extern Proc *Proclist;
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extern char psmap[Npsmpt];
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extern Qidtab *qidtab[Nqidtab];
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extern uint32_t messagesize;
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extern char Enomem[];
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extern int srvfd;
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extern char* patternfile;
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/* File system protocol service procedures */
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void Xattach(Fsrpc*);
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void Xauth(Fsrpc*);
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void Xclunk(Fsrpc*);
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void Xcreate(Fsrpc*);
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void Xflush(Fsrpc*);
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void Xnop(Fsrpc*);
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void Xremove(Fsrpc*);
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void Xstat(Fsrpc*);
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void Xversion(Fsrpc*);
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void Xwalk(Fsrpc*);
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void Xwstat(Fsrpc*);
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void slave(Fsrpc*);
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void reply(Fcall*, Fcall*, char*);
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Fid *getfid(int);
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int freefid(int);
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Fid *newfid(int);
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Fsrpc *getsbuf(void);
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void initroot(void);
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void fatal(char*, ...);
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char* makepath(File*, char*);
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File *file(File*, char*);
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void freefile(File*);
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void slaveopen(Fsrpc*);
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void slaveread(Fsrpc*);
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void slavewrite(Fsrpc*);
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void blockingslave(void);
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void reopen(Fid *f);
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void noteproc(int, char*);
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void flushaction(void*, char*);
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void pushfcall(char*);
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Qidtab* uniqueqid(Dir*);
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void freeqid(Qidtab*);
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char* estrdup(char*);
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void* emallocz(uint32_t);
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int readmessage(int, char*, int);
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void exclusions(void);
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int excludefile(char*);
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int preaddir(Fid*, uint8_t*, int, int64_t);
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