ref: 2a941967c8f06ee6f6eb63bf5399c0d2ba4b89df
dir: /fns.h/
#pragma varargck type "M" Msg*
#pragma varargck type "P" Kvp*
#pragma varargck type "K" Key*
#pragma varargck type "V" Val*
#pragma varargck type "B" Bptr
#pragma varargck type "R" Arange*
#pragma varargck type "X" char*
#pragma varargck type "Q" Qid
extern Gefs* fs;
extern int debug;
extern int permissive;
extern int usereserve;
extern char* reamuser;
extern Errctx** errctx;
extern Blk* blkbuf;
extern int noneid;
extern int nogroupid;
extern int admid;
#define UNPACK8(p) (((uchar*)(p))[0])
#define UNPACK16(p) ((((uchar*)(p))[0]<<8)|(((uchar*)(p))[1]))
#define UNPACK32(p) ((((uchar*)(p))[0]<<24)|(((uchar*)(p))[1]<<16)|\
(((uchar*)(p))[2]<<8)|(((uchar*)(p))[3]))
#define UNPACK64(p) (((u64int)((((uchar*)(p))[0]<<24)|(((uchar*)(p))[1]<<16)|\
(((uchar*)(p))[2]<<8)|(((uchar*)(p))[3])))<<32 |\
((u64int)((((uchar*)(p))[4]<<24)|(((uchar*)(p))[5]<<16)|\
(((uchar*)(p))[6]<<8)|(((uchar*)(p))[7]))))
#define PACK8(p,v) do{(p)[0]=(v);}while(0)
#define PACK16(p,v) do{(p)[0]=(v)>>8;(p)[1]=(v);}while(0)
#define PACK32(p,v) do{(p)[0]=(v)>>24;(p)[1]=(v)>>16;(p)[2]=(v)>>8;(p)[3]=(v);}while(0)
#define PACK64(p,v) do{(p)[0]=(v)>>56;(p)[1]=(v)>>48;(p)[2]=(v)>>40;(p)[3]=(v)>>32;\
(p)[4]=(v)>>24;(p)[5]=(v)>>16;(p)[6]=(v)>>8;(p)[7]=(v);}while(0)
void* emalloc(usize, int);
Blk* newdblk(Tree*, vlong, int);
Blk* newblk(Tree*, int);
Blk* dupblk(Tree*, Blk*);
Blk* getroot(Tree*, int*);
Blk* getblk(Bptr, int);
Blk* holdblk(Blk*);
void dropblk(Blk*);
void lrutop(Blk*);
void lrubot(Blk*);
void cacheins(Blk*);
void cachedel(vlong);
Blk* cacheget(vlong);
Blk* cachepluck(void);
void qinit(Syncq*);
void qput(Syncq*, Qent);
Arena* getarena(vlong);
void syncblk(Blk*);
void enqueue(Blk*);
void epochstart(int);
void epochend(int);
void epochwait(void);
void epochclean(void);
void limbo(int op, Limbo*);
void freeblk(Tree*, Blk*);
void freebp(Tree*, Bptr);
int logbarrier(Arena *, vlong);
void dlappend(Dlist *dl, Bptr);
void killblk(Tree*, Bptr);
ushort blkfill(Blk*);
uvlong blkhash(Blk*);
uvlong bufhash(void*, usize);
u32int ihash(uvlong);
void finalize(Blk*);
Mount* getmount(char*);
void clunkmount(Mount*);
void updatesnap(Tree**, Tree*, char*, int);
void tagsnap(Tree*, char*, int);
void delsnap(Tree*, vlong, char*);
void freedl(Dlist*, int);
Tree* opensnap(char*, int*);
void closesnap(Tree*);
void reamfs(char*);
void growfs(char*);
void loadarena(Arena*, Bptr);
void loadfs(char*);
void loadlog(Arena*, Bptr);
void flushlog(Arena*);
int scandead(Dlist*, int, void(*)(Bptr, void*), void*);
int endfs(void);
void compresslog(Arena*);
void dlsync(void);
void setval(Blk*, Kvp*);
Conn* newconn(int, int, int);
void putconn(Conn*);
int walk1(Tree*, vlong, char*, Qid*, vlong*);
void loadusers(int, Tree*);
User* uid2user(int);
User* name2user(char*);
void btupsert(Tree*, Msg*, int);
int btlookup(Tree*, Key*, Kvp*, char*, int);
void btnewscan(Scan*, char*, int);
void btenter(Tree*, Scan*);
int btnext(Scan*, Kvp*);
void btexit(Scan*);
int checkflag(Blk *b, int, int);
void setflag(Blk *b, int, int);
char* estrdup(char*);
int keycmp(Key *, Key *);
void cpkey(Key*, Key*, char*, int);
void cpkvp(Kvp*, Kvp*, char*, int);
/* for dumping */
void getval(Blk*, int, Kvp*);
void getmsg(Blk*, int, Msg*);
Bptr getptr(Kvp*, int*);
void initshow(void);
void showblk(int, Blk*, char*, int);
void showbp(int, Bptr, int);
void showtreeroot(int, Tree*);
int checkfs(int);
#define dprint(...) \
do{ \
if(debug) fprint(2, __VA_ARGS__); \
}while(0)
#define fatal(...) \
do{ \
fprint(2, __VA_ARGS__); \
abort(); \
}while(0)
#define tracex(msg, bp, v0, v1) \
do{ \
if(fs->trace != nil) \
_trace(msg, bp, v0, v1); \
} while(0)
#define traceb(msg, bp) tracex(msg, bp, -1, -1)
#define tracev(msg, v0) tracex(msg, Zb, v0, -1)
#define tracem(msg) tracex(msg, Zb, -1, -1)
jmp_buf* _waserror(void);
_Noreturn void error(char*, ...);
_Noreturn void broke(char*, ...);
_Noreturn void nexterror(void);
#define waserror() (setjmp(*_waserror()))
#define errmsg() ((*errctx)->err)
#define poperror() assert((*errctx)->nerrlab-- > 0)
#define estacksz() ((*errctx)->nerrlab)
void _trace(char*, Bptr, vlong, vlong);
char* packstr(char*, char*, char*);
void dir2kv(vlong, Xdir*, Kvp*, char*, int);
int dir2statbuf(Xdir*, char*, int);
void dlist2kv(Dlist*, Kvp*, char*, int);
void lbl2kv(char*, vlong, uint, Kvp*, char*, int);
void link2kv(vlong, vlong, Kvp*, char*, int);
void retag2kv(vlong, vlong, int, int, Kvp*, char*, int);
void tree2kv(Tree*, Kvp*, char*, int);
void kv2dir(Kvp*, Xdir*);
void kv2dlist(Kvp*, Dlist*);
void kv2link(Kvp*, vlong*, vlong*);
void kv2qid(Kvp*, Qid*);
int kv2statbuf(Kvp*, char*, int);
char* packarena(char*, int, Arena*);
char* packbp(char*, int, Bptr*);
char* packdkey(char*, int, vlong, char*);
char* packdval(char*, int, Xdir*);
char* packlbl(char*, int, char*);
char* packsnap(char*, int, vlong);
char* packsuper(char*, int, vlong);
char* packtree(char*, int, Tree*);
char* packsb(char*, int, Gefs*);
char* unpackarena(Arena*, char*, int);
Bptr unpackbp(char*, int);
char* unpackdkey(char*, int, vlong*);
Tree* unpacktree(Tree*, char*, int);
char* unpacksb(Gefs*, char*, int);
char* unpackstr(char*, char*, char**);
/* fmt */
int Bconv(Fmt*);
int Mconv(Fmt*);
int Pconv(Fmt*);
int Rconv(Fmt*);
int Kconv(Fmt*);
int Qconv(Fmt*);
Chan* mkchan(int);
void* chrecv(Chan*);
void chsend(Chan*, void*);
void runfs(int, void*);
void runmutate(int, void*);
void runread(int, void*);
void runcons(int, void*);
void runtasks(int, void*);
void runsync(int, void*);
void runsweep(int, void*);
void runsweep(int, void*);