/* *  Inferno kernel and musl each have their own versions of C string and stdlib functions */#ifndef _PLAN9_SOURCE/* *  If _PLAN9_SOURCE is not set then source files are compiled using musl POSIX compliant string functions *  In this case, libc.h is an internal musl include file (completely unrelated to Plan9 libc.h) */#include <libc_musl.h>#else/* *  If _PLAN9_SOURCE is set then source files are compiled to use Inferno 'k' versions of stdlib functions *  - Inferno stdlib strtoxx functions do not set errno *  - Inferno string functions do not have POSIX compliant const/restrict qualifiers */#ifndef _PLAN9_LIBC_H#define _PLAN9_LIBC_H#define _STRING_H	// prevent musl string.h definitions#define _STDLIB_H	// prevent musl stdlib.h definitions #define	nelem(x)	(sizeof(x)/sizeof((x)[0]))#define	offsetof(s, m)	(ulong)(&(((s*)0)->m))#define	assert(x)	if(x){}else _assert("x")#define intern		static inline /* * mem routines */extern	void*	memset(void* p, int c, size_t n); //{ for(char *r = p; n; n--, r++) *r = c; return p; }extern	void*	memcpy(void* p, const void* q, size_t n);extern  void*	memccpy(void*p, const void* q, int c, size_t n);intern  void*	memchr(void* p, int c, size_t n) { char *sp = p; for(c = (char)c; n > 0; n--) if(*sp++ == c) return sp-1; return 0; }intern  int	memcmp(const void* p, const void* q, size_t n) { uchar *s=p, *t=q; for (;n && *s==*t; s++,t++) n--; return n ? *s-*t : 0; }intern  void*	memmove(void*p, const void* q, size_t n) { return memcpy(p, q, n); } /* * string routines */extern	void*	malloc(size_t size);extern	char*	strchrnul(const char *s, int c);intern	char*	strchr(char* s, int c) { char *r = strchrnul(s, c); return *(char *)r == (char)c ? r : 0; }intern	char*	strrchr(char* s, int c) { const char *p, *f = nil; while ((p = strchr(s, c))) { f = p; s = p + 1; } return (char *) f; }intern	size_t	strlen(char* s) { return (size_t) (strchrnul(s, 0) - s); }intern	int	strncmp(char* l, char* r, size_t n) { if (!n--) return 0; for (; *l && *r && n && *l == *r ; l++, r++) n--; return *l - *r; }intern	int	strcmp(char *p, char *q) { return strncmp(p,q, 0xFFFF); }intern	char*	strncpy(char* p, char* q, long n) { q = memccpy(p, q, 0, n); if (q && q<p+n) memset(q, 0, p+n-q); return p; }intern	char*	strcpy(char *p, char *q) { memccpy(p,q, 0, 0x7FFFFFFF); return p; }intern	char*	strcat(char *p, char *q) { strcpy(strchrnul(p, 0), q); return p; }intern	char*	strdup(const char *q) { char *p = malloc(strlen(q)+1); return p ? strcpy(p, q) : 0; }intern	char*	strstr(char *r, char *s) { char f=s[0]; if(!f)return r; for(char *p=strchr(r,f); ; p=strchr(p+1,f))if(!p||!strcmp(p,s))return p; }extern	char*	strecpy(char*, char*, char*);extern	int	cistrncmp(char*, char*, int);extern	int	cistrcmp(char*, char*);extern	char*	cistrstr(char*, char*);extern	int	tokenize(char*, char**, int); enum{	UTFmax		= 4,		/* maximum bytes per rune */	Runesync	= 0x80,		/* cannot represent part of a UTF sequence (<) */	Runeself	= 0x80,		/* rune and UTF sequences are the same (<) */	Runeerror	= 0xFFFD,	/* decoding error in UTF */	Runemax		= 0x10FFFF,	/* 21-bit rune */	Runemask	= 0x1FFFFF,	/* bits used by runes (see grep) */}; /* * rune routines */extern	int	runetochar(char*, Rune*);extern	int	chartorune(Rune*, char*);extern	int	runelen(long);extern	int	runenlen(Rune*, int);extern	int	fullrune(char*, int);extern	int	utflen(char*);extern	int	utfnlen(char*, long);extern	char*	utfrune(char*, long);extern	char*	utfrrune(char*, long);extern	char*	utfutf(char*, char*);extern	char*	utfecpy(char*, char*, char*); #ifndef EMUextern	Rune*	runestrcat(Rune*, Rune*);extern	Rune*	runestrchr(Rune*, Rune);extern	int	runestrcmp(Rune*, Rune*);extern	Rune*	runestrcpy(Rune*, Rune*);extern	Rune*	runestrncpy(Rune*, Rune*, long);extern	Rune*	runestrecpy(Rune*, Rune*, Rune*);extern	Rune*	runestrdup(Rune*);extern	Rune*	runestrncat(Rune*, Rune*, long);extern	int	runestrncmp(Rune*, Rune*, long);extern	Rune*	runestrrchr(Rune*, Rune);extern	long	runestrlen(Rune*);extern	Rune*	runestrstr(Rune*, Rune*); extern	Rune	tolowerrune(Rune);extern	Rune	totitlerune(Rune);extern	Rune	toupperrune(Rune);extern	Rune	tobaserune(Rune);extern	int	isalpharune(Rune);extern	int	isbaserune(Rune);extern	int	isdigitrune(Rune);extern	int	islowerrune(Rune);extern	int	isspacerune(Rune);extern	int	istitlerune(Rune);extern	int	isupperrune(Rune);#endif /* * malloc */extern	void*	malloc(size_t);extern	void*	mallocz(ulong, int);extern	void	free(void*);extern	ulong	msize(void*);extern	void*	calloc(size_t, size_t);extern	void*	realloc(void*, size_t);extern	void	setmalloctag(void*, ulong);extern	void	setrealloctag(void*, ulong);extern	ulong	getmalloctag(void*);extern	ulong	getrealloctag(void*);extern	void*	malloctopoolblock(void*); /* * print routines */typedef struct Fmt	Fmt;struct Fmt{	uchar	runes;			/* output buffer is runes or chars? */	void	*start;			/* of buffer */	void	*to;			/* current place in the buffer */	void	*stop;			/* end of the buffer; overwritten if flush fails */	int	(*flush)(Fmt *);	/* called when to == stop */	void	*farg;			/* to make flush a closure */	int	nfmt;			/* num chars formatted so far */	va_list	args;			/* args passed to dofmt */	int	r;			/* % format Rune */	int	width;	int	prec;	ulong	flags;}; enum{	FmtWidth	= 1,	FmtLeft		= FmtWidth << 1,	FmtPrec		= FmtLeft << 1,	FmtSharp	= FmtPrec << 1,	FmtSpace	= FmtSharp << 1,	FmtSign		= FmtSpace << 1,	FmtZero		= FmtSign << 1,	FmtUnsigned	= FmtZero << 1,	FmtShort	= FmtUnsigned << 1,	FmtLong		= FmtShort << 1,	FmtVLong	= FmtLong << 1,	FmtComma	= FmtVLong << 1,	FmtByte		= FmtComma << 1, 	FmtFlag		= FmtByte << 1}; extern	int	print(char*, ...);extern	char*	seprint(char*, char*, char*, ...);extern	char*	vseprint(char*, char*, char*, va_list);extern	int	snprint(char*, int, char*, ...);extern	int	vsnprint(char*, int, char*, va_list);extern	char*	smprint(char*, ...);extern	char*	vsmprint(char*, va_list);extern	int	sprint(char*, char*, ...);extern	int	fprint(int, char*, ...);extern	int	vfprint(int, char*, va_list); #ifndef EMUextern	int	runesprint(Rune*, char*, ...);extern	int	runesnprint(Rune*, int, char*, ...);extern	int	runevsnprint(Rune*, int, char*, va_list);extern	Rune*	runeseprint(Rune*, Rune*, char*, ...);extern	Rune*	runevseprint(Rune*, Rune*, char*, va_list);extern	Rune*	runesmprint(char*, ...);extern	Rune*	runevsmprint(char*, va_list);#endif extern	int	fmtfdinit(Fmt*, int, char*, int);extern	int	fmtfdflush(Fmt*);extern	int	fmtstrinit(Fmt*);extern	char*	fmtstrflush(Fmt*);extern	int	runefmtstrinit(Fmt*);extern	Rune*	runefmtstrflush(Fmt*); #pragma	varargck	argpos	fmtprint	2#pragma	varargck	argpos	fprint		2#pragma	varargck	argpos	print		1#pragma	varargck	argpos	runeseprint	3#pragma	varargck	argpos	runesmprint	1#pragma	varargck	argpos	runesnprint	3#pragma	varargck	argpos	runesprint	2#pragma	varargck	argpos	seprint		3#pragma	varargck	argpos	smprint		1#pragma	varargck	argpos	snprint		3#pragma	varargck	argpos	sprint		2 #pragma	varargck	type	"lld"	vlong#pragma	varargck	type	"llo"	vlong#pragma	varargck	type	"llx"	vlong#pragma	varargck	type	"llb"	vlong#pragma	varargck	type	"lld"	uvlong#pragma	varargck	type	"llo"	uvlong#pragma	varargck	type	"llx"	uvlong#pragma	varargck	type	"llb"	uvlong#pragma	varargck	type	"ld"	long#pragma	varargck	type	"lo"	long#pragma	varargck	type	"lx"	long#pragma	varargck	type	"lb"	long#pragma	varargck	type	"ld"	ulong#pragma	varargck	type	"lo"	ulong#pragma	varargck	type	"lx"	ulong#pragma	varargck	type	"lb"	ulong#pragma	varargck	type	"d"	int#pragma	varargck	type	"o"	int#pragma	varargck	type	"x"	int#pragma	varargck	type	"c"	int#pragma	varargck	type	"C"	int#pragma	varargck	type	"b"	int#pragma	varargck	type	"d"	uint#pragma	varargck	type	"x"	uint#pragma	varargck	type	"c"	uint#pragma	varargck	type	"C"	uint#pragma	varargck	type	"b"	uint#pragma	varargck	type	"f"	double#pragma	varargck	type	"e"	double#pragma	varargck	type	"g"	double#pragma	varargck	type	"s"	char*#pragma	varargck	type	"q"	char*#pragma	varargck	type	"S"	Rune*#pragma	varargck	type	"Q"	Rune*#pragma	varargck	type	"r"	void#pragma	varargck	type	"%"	void#pragma	varargck	type	"n"	int*#pragma	varargck	type	"p"	uintptr#pragma	varargck	type	"p"	void*#pragma	varargck	flag	','#pragma	varargck	flag	' '#pragma	varargck	flag	'h'#pragma varargck	type	"<"	void*#pragma varargck	type	"["	void*#pragma varargck	type	"H"	void*#pragma varargck	type	"lH"	void* extern	int	fmtinstall(int, int (*)(Fmt*));extern	int	dofmt(Fmt*, char*);extern	int	dorfmt(Fmt*, Rune*);extern	int	fmtprint(Fmt*, char*, ...);extern	int	fmtvprint(Fmt*, char*, va_list);extern	int	fmtrune(Fmt*, int);extern	int	fmtstrcpy(Fmt*, char*);extern	int	fmtrunestrcpy(Fmt*, Rune*);/* * error string for %r * supplied on per os basis, not part of fmt library */extern	int	errfmt(Fmt *f); /* * quoted strings */extern	char	*unquotestrdup(char*);extern	Rune	*unquoterunestrdup(Rune*);extern	char	*quotestrdup(char*);extern	Rune	*quoterunestrdup(Rune*);extern	int	quotestrfmt(Fmt*);extern	int	quoterunestrfmt(Fmt*);extern	void	quotefmtinstall(void);extern	int	(*doquote)(int); /* * random number */extern	void	srand(long);extern	int	rand(void);extern	int	nrand(int);#ifndef EMUextern	long	lrand(void);extern	long	lnrand(long);extern	double	frand(void);#endifextern	ulong	truerand(void);			/* uses /dev/random */extern	ulong	ntruerand(ulong);		/* uses /dev/random */ /* * math */extern	double	NaN(void);extern	double	Inf(int);extern	int	isNaN(double);extern	int	isInf(double, int);#ifndef EMU					/* enforce exclusion of FP funcs within kernel */extern	ulong	umuldiv(ulong, ulong, ulong);extern	long	muldiv(long, long, long); extern	double	pow(double, double);extern	double	atan2(double, double);extern	double	fabs(double);extern	double	atan(double);extern	double	log(double);extern	double	log10(double);extern	double	exp(double);extern	double	floor(double);extern	double	ceil(double);extern	double	hypot(double, double);extern	double	sin(double);extern	double	cos(double);extern	double	tan(double);extern	double	asin(double);extern	double	acos(double);extern	double	sinh(double);extern	double	cosh(double);extern	double	tanh(double);extern	double	sqrt(double);extern	double	fmod(double, double);#endif #define	HUGE	3.4028234e38#define PIO2	1.570796326794896619231e0#define PI	(PIO2+PIO2) #define NaN()	    __builtin_nan("")#define Inf(s)	    __builtin_copysign(__builtin_inf(), (s))#define isNaN(x)    __builtin_isnan((x))#define isInf(x,s) (__builtin_isinf((x)) ? ((x) > 0 ? (s) >= 0 : (s) <= 0) : 0) /* * time-of-day */typedef struct Tm Tm;struct Tm {	int	sec;	int	min;	int	hour;	int	mday;	int	mon;	int	year;	int	wday;	int	yday;	char	zone[4];	int	tzoff;}; extern	Tm*	gmtime(long);extern	Tm*	localtime(long);extern	char*	asctime(Tm*);extern	char*	ctime(long);extern	double	cputime(void);extern	long	times(long*);extern	long	tm2sec(Tm*);extern	vlong	nsec(void); /* * clock_gettime extension */#ifndef __DEFINED_struct_timespec)#define __DEFINED_struct_timespecstruct timespec { time_t tv_sec; long tv_nsec; };#endifint clock_gettime(int, struct timespec *); /* * one-of-a-kind */extern	void	 _assert(char*);extern	int	abs(int);extern  int     atexit(void(*)(void));extern  void    atexitdont(void(*)(void));extern  int     atnotify(int(*)(void*, char*), int); extern  vlong   kstrtoll(const char*, char**, int);intern	int	atoi(char *x)	{ return (int) kstrtoll(x, nil, 10); }intern	long	atol(char *x)	{ return (long) kstrtoll(x, nil, 10); }intern	vlong	atoll(char *x)	{ return kstrtoll(x, nil, 10); }extern	double  charstod(int(*)(void*), void*);extern	char*   cleanname(char*); extern	int	dec64(uchar*, int, char*, int);extern	int	enc64(char*, int, uchar*, int);extern	int	dec32(uchar*, int, char*, int);extern	int	enc32(char*, int, uchar*, int);extern	int	dec16(uchar*, int, char*, int);extern	int	enc16(char*, int, uchar*, int);extern	void	_Noreturn exits(char*);extern	double  frexp(double, int*);extern	ulong	getcallerpc(void*);extern	char*	getenv(char*);extern	int	getfields(char*, char**, int, int, char*);extern	char*	getuser(void);extern	char*	getwd(char*, int);extern	double  ipow10(int);extern	double  ldexp(double, int);extern	double  modf(double, double*); extern	void    perror(const char*);extern	double  pow10(int);extern  void    qsort(void*, long, long, int (*)(void*, void*));extern  double  strtod(char*, char**);extern  long    strtol(char*, char**, int);extern  ulong   strtoul(char*, char**, int);extern  vlong   strtoll(const char*, char**, int);extern  uvlong  strtoull(char*, char**, int);extern	void    sysfatal(char*, ...);extern  long    time(long*);extern  int     tolower(int);extern  int     toupper(int);#include <ctype.h> /* *  synchronization */#ifndef EMUtypedef struct	Proc Proc;#endif typedef struct	Lock Lock;struct Lock {	int	val;	int	pid;}; extern int	_tas(int*); extern	void	lock(Lock*);extern	void	unlock(Lock*);extern	int	canlock(Lock*); typedef struct	QLock QLock;struct QLock{	Lock	use;			/* to access Qlock structure */	Proc	*head;			/* next process waiting for object */	Proc	*tail;			/* last process waiting for object */	int	locked;			/* flag */}; extern	void	qlock(QLock*);extern	void	qunlock(QLock*);extern	int	canqlock(QLock*);extern	void	_qlockinit(ulong (*)(ulong, ulong));	/* called only by the thread library */ typedefstruct RWLock{	Lock	l;			/* Lock modify lock */	QLock	x;			/* Mutual exclusion lock */	QLock	k;			/* Lock for waiting writers */	int	readers;		/* Count of readers in lock */} RWLock; extern	int	canrlock(RWLock*);extern	int	canwlock(RWLock*);extern	void	rlock(RWLock*);extern	void	runlock(RWLock*);extern	void	wlock(RWLock*);extern	void	wunlock(RWLock*); /* * network dialing */#define NETPATHLEN 40 /* * system calls * */#define getpid		kgetpid#define getwd		kgetwd #define	STATMAX	65535U	/* max length of machine-independent stat structure */#define	DIRMAX	(sizeof(Dir)+STATMAX)	/* max length of Dir structure */#define	ERRMAX	128	/* max length of error string */ #define	MORDER	0x0003	/* mask for bits defining order of mounting */#define	MREPL	0x0000	/* mount replaces object */#define	MBEFORE	0x0001	/* mount goes before others in union directory */#define	MAFTER	0x0002	/* mount goes after others in union directory */#define	MCREATE	0x0004	/* permit creation in mounted directory */#define	MCACHE	0x0010	/* cache some data */#define	MMASK	0x0017	/* all bits on */ #define	OREAD	0	/* open for read */#define	OWRITE	1	/* write */#define	ORDWR	2	/* read and write */#define	OEXEC	3	/* execute, == read but check execute permission */#define	OTRUNC	16	/* or'ed in (except for exec), truncate file first */#define	OCEXEC	32	/* or'ed in, close on exec */#define	ORCLOSE	64	/* or'ed in, remove on close */#define	OEXCL	0x1000	/* or'ed in, exclusive use (create only) */ #define	AEXIST	0	/* accessible: exists */#define	AEXEC	1	/* execute access */#define	AWRITE	2	/* write access */#define	AREAD	4	/* read access */ /* bits in Qid.type */#define QTDIR		0x80		/* type bit for directories */

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