#pragma src "/usr/inferno/liblogfs" typedef struct LogfsLowLevel LogfsLowLevel;typedef struct LogfsBoot LogfsBoot;typedef struct Logfs Logfs;typedef struct LogfsServer LogfsServer;typedef struct LogfsIdentityStore LogfsIdentityStore; #pragma incomplete Logfs#pragma incomplete LogfsServer#pragma incomplete LogfsIdentityStore#pragma incomplete LogfsBoot typedef u64int Pageset; #define	BITSPERSET	(sizeof(Pageset)*8)#define	PAGETOP	((Pageset)1<<(BITSPERSET-1)) enum {	LogfsTnone = 0xff,	LogfsTboot = 0x01,	LogfsTlog = 0x06,	LogfsTdata = 0x18,	LogfsTbad = -1,	LogfsTworse = -2,	LogfsMagic = 'V',}; enum {	LogfsLogTstart = 's',	LogfsLogTcreate = 'c',	LogfsLogTtrunc = 't',	LogfsLogTremove = 'r',	LogfsLogTwrite = 'w',	LogfsLogTwstat = 'W',	LogfsLogTend = 'e',}; enum {	LogfsOpenFlagNoPerm = 1,	LogfsOpenFlagWstatAllow = 2,}; typedef enum LogfsLowLevelReadResult {	LogfsLowLevelReadResultOk,	LogfsLowLevelReadResultSoftError,	LogfsLowLevelReadResultHardError,	LogfsLowLevelReadResultBad,	LogfsLowLevelReadResultAllOnes,} LogfsLowLevelReadResult; typedef short LOGFSGETBLOCKTAGFN(LogfsLowLevel*, long);typedef void LOGFSSETBLOCKTAGFN(LogfsLowLevel*, long, short);typedef ulong LOGFSGETBLOCKPATHFN(LogfsLowLevel*, long);typedef void LOGFSSETBLOCKPATHFN(LogfsLowLevel*, long, ulong);typedef long LOGFSFINDFREEBLOCKFN(LogfsLowLevel*, long*);typedef char *LOGFSREADBLOCKFN(LogfsLowLevel*, void*, long, LogfsLowLevelReadResult*);typedef char *LOGFSWRITEBLOCKFN(LogfsLowLevel*, void*, uchar, ulong, int, long*, long);typedef char *LOGFSERASEBLOCKFN(LogfsLowLevel*, long, void **, int*);typedef char *LOGFSFORMATBLOCKFN(LogfsLowLevel*, long, uchar, long, long, long, int, long*, void*, int*);typedef char *LOGFSREFORMATBLOCKFN(LogfsLowLevel*, long, uchar, long, int, long*, void*, int*);typedef void LOGFSMARKBLOCKBADFN(LogfsLowLevel*, long);typedef int LOGFSGETBLOCKSFN(LogfsLowLevel*);typedef long LOGFSGETBASEBLOCKFN(LogfsLowLevel*);typedef int LOGFSGETBLOCKSIZEFN(LogfsLowLevel*);typedef int LOGFSGETBLOCKPARTIALFORMATSTATUSFN(LogfsLowLevel*, long);typedef ulong LOGFSCALCRAWADDRESSFN(LogfsLowLevel*, long, int);typedef char *LOGFSOPENFN(LogfsLowLevel*, long, long, int, int, long*);typedef char *LOGFSGETBLOCKSTATUSFN(LogfsLowLevel*, long, int*, void **, LogfsLowLevelReadResult*);typedef int LOGFSCALCFORMATFN(LogfsLowLevel*, long, long, long, long*, long*, long*);typedef int LOGFSGETOPENSTATUSFN(LogfsLowLevel*);typedef void LOGFSFREEFN(LogfsLowLevel*);typedef char *LOGFSREADPAGERANGEFN(LogfsLowLevel*, uchar*, long, int, int, int, LogfsLowLevelReadResult*);typedef char *LOGFSWRITEPAGEFN(LogfsLowLevel*, uchar*, long, int);typedef char *LOGFSSYNCFN(LogfsLowLevel*); struct LogfsLowLevel {	int l2pagesize;	int l2pagesperblock;	long blocks;	int pathbits;	LOGFSOPENFN *open;	LOGFSGETBLOCKTAGFN *getblocktag;	LOGFSSETBLOCKTAGFN *setblocktag;	LOGFSGETBLOCKPATHFN *getblockpath;	LOGFSSETBLOCKPATHFN *setblockpath;	LOGFSREADPAGERANGEFN *readpagerange;	LOGFSWRITEPAGEFN *writepage;	LOGFSFINDFREEBLOCKFN *findfreeblock;	LOGFSREADBLOCKFN *readblock;	LOGFSWRITEBLOCKFN *writeblock;	LOGFSERASEBLOCKFN *eraseblock;	LOGFSFORMATBLOCKFN *formatblock;	LOGFSREFORMATBLOCKFN *reformatblock;	LOGFSMARKBLOCKBADFN *markblockbad;	LOGFSGETBASEBLOCKFN *getbaseblock;	LOGFSGETBLOCKSIZEFN *getblocksize;	LOGFSGETBLOCKPARTIALFORMATSTATUSFN *getblockpartialformatstatus;	LOGFSCALCRAWADDRESSFN *calcrawaddress;	LOGFSGETBLOCKSTATUSFN *getblockstatus;	LOGFSCALCFORMATFN *calcformat;	LOGFSGETOPENSTATUSFN *getopenstatus;	LOGFSFREEFN *free;	LOGFSSYNCFN *sync;}; char *logfstagname(uchar); char *logfsisnew(LogfsIdentityStore **);void logfsisfree(LogfsIdentityStore **);char *logfsisgroupcreate(LogfsIdentityStore*, char*, char*);char *logfsisgrouprename(LogfsIdentityStore*, char*, char*);char *logfsisgroupsetleader(LogfsIdentityStore*, char*, char*);char *logfsisgroupaddmember(LogfsIdentityStore*, char*, char*);char *logfsisgroupremovemember(LogfsIdentityStore*, char*, char*);char *logfsisusersread(LogfsIdentityStore*, void*, long, ulong, long*); char *logfsformat(LogfsLowLevel*, long, long, long, int);char *logfsbootopen(LogfsLowLevel*, long, long, int, int, LogfsBoot**);void logfsbootfree(LogfsBoot*);char *logfsbootread(LogfsBoot*, void*, long, ulong);char *logfsbootwrite(LogfsBoot*, void*, long, ulong);char *logfsbootio(LogfsBoot*, void*, long, ulong, int);char *logfsbootmap(LogfsBoot*, ulong, ulong*, int*, int*, int*, ulong*, ulong*);long logfsbootgetiosize(LogfsBoot*);long logfsbootgetsize(LogfsBoot*);void logfsboottrace(LogfsBoot*, int); char *logfsserverattach(LogfsServer*, u32int, char*, Qid*);char *logfsserverclunk(LogfsServer*, u32int);char *logfsservercreate(LogfsServer*, u32int, char*, u32int, uchar, Qid*);char *logfsserverflush(LogfsServer*);char *logfsservernew(LogfsBoot*, LogfsLowLevel*, LogfsIdentityStore*, ulong, int, LogfsServer**);char *logfsserveropen(LogfsServer*, u32int, uchar mode, Qid*);char *logfsserverread(LogfsServer*, u32int, u32int, u32int, uchar*, u32int, u32int*);char *logfsserverremove(LogfsServer*, u32int);char *logfsserverstat(LogfsServer*, u32int, uchar*, u32int, ushort*);char *logfsserverwalk(LogfsServer*, u32int, u32int, ushort, char **, ushort*, Qid*);char *logfsserverwrite(LogfsServer*, u32int, u32int, u32int, uchar*, u32int*);char *logfsserverwstat(LogfsServer*, u32int, uchar*, ushort nstat);void logfsserverfree(LogfsServer **);char *logfsserverlogsweep(LogfsServer*, int, int*);char *logfsserverreadpathextent(LogfsServer*, u32int, int, u32int*, u32int*, long*, int*, int*); char *logfsservertestcmd(LogfsServer*, int, char **);void logfsservertrace(LogfsServer*, int); /* * implemented by the environment */ulong logfsnow(void);void *logfsrealloc(void*, ulong);void logfsfreemem(void*);int	nrand(int); extern char Eio[];extern char Ebadarg[];extern char Eperm[];