/* define _BSD_SOURCE to use ISO C, POSIX, and 4.3BSD things. */#ifndef _BSD_SOURCE#define _BSD_SOURCE#endif#define _XOPEN_SOURCE  500#define _LARGEFILE_SOURCE	1#define _LARGEFILE64_SOURCE	1#define _FILE_OFFSET_BITS 64#ifdef USE_PTHREADS#define	_REENTRANT	1#endif#include <features.h>#include <sys/types.h>#include <stdlib.h>#include <stdarg.h>#define sync __os_sync#include <unistd.h>#undef sync#include <errno.h>#define __NO_STRING_INLINES#include <string.h>#include "math.h"#include <fcntl.h>#include <setjmp.h>#include <float.h>#include <endian.h> #define	getwd	infgetwd #ifndef EMUtypedef struct Proc Proc;#endif /* * math module dtoa * #define __LITTLE_ENDIAN /usr/include/endian.h under linux */ #define	nil		((void*)0) typedef unsigned char	uchar;typedef signed char	schar;typedef unsigned short	Rune;typedef long long int	vlong;typedef unsigned long long int	uvlong;typedef unsigned int u32int;typedef uvlong u64int; typedef unsigned int	mpdigit;	/* for /sys/include/mp.h */typedef unsigned short u16int;typedef unsigned char u8int;typedef unsigned long uintptr; #define	USED(x)		if(x){}else{}#define	SET(x) #undef nelem#define	nelem(x)	(sizeof(x)/sizeof((x)[0]))#undef offsetof#define	offsetof(s, m)	(ulong)(&(((s*)0)->m))#undef assert#define	assert(x)	if(x){}else _assert("x") /* * most mem and string routines are declared by ANSI/POSIX files above */ extern	char*	strecpy(char*, char*, char*);extern	char*	strdup(const 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		= 3,		/* maximum bytes per rune */	Runesync	= 0x80,		/* cannot represent part of a UTF sequence (<) */	Runeself	= 0x80,		/* rune and UTF sequences are the same (<) */	Runeerror	= 0x80		/* decoding error in UTF */}; /* * 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*); extern	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	int	isalpharune(Rune);extern	int	islowerrune(Rune);extern	int	isspacerune(Rune);extern	int	istitlerune(Rune);extern	int	isupperrune(Rune); /* * 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); extern	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); 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*); 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	ulong	truerand(void);extern	ulong	ntruerand(ulong); /* * math */extern	int	isNaN(double);extern	int	isInf(double, int); /* * 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	vlong	osnsec(void);#define	nsec	osnsec	/* * one-of-a-kind */extern	void	_assert(char*);extern	double	charstod(int(*)(void*), void*);extern	char*	cleanname(char*);extern	uintptr	getcallerpc(void*);extern	int	getfields(char*, char**, int, int, char*);extern	char*	getuser(void);extern	char*	getwd(char*, int);extern	double	ipow10(int);#define	pow10	infpow10extern	double	pow10(int);extern	vlong	strtoll(const char*, char**, int);extern	uvlong	strtoull(const char*, char**, int);extern	void	sysfatal(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	int	encodefmt(Fmt*); /* *  synchronization */typedefstruct Lock {	int	val;	int	pid;} Lock; 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	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 */#define QTAPPEND	0x40		/* type bit for append only files */#define QTEXCL		0x20		/* type bit for exclusive use files */#define QTMOUNT		0x10		/* type bit for mounted channel */#define QTAUTH		0x08		/* type bit for authentication file */#define QTFILE		0x00		/* plain file */ /* bits in Dir.mode */#define DMDIR		0x80000000	/* mode bit for directories */#define DMAPPEND	0x40000000	/* mode bit for append only files */#define DMEXCL		0x20000000	/* mode bit for exclusive use files */#define DMMOUNT		0x10000000	/* mode bit for mounted channel */#define DMAUTH		0x08000000	/* mode bit for authentication file */#define DMREAD		0x4		/* mode bit for read permission */#define DMWRITE		0x2		/* mode bit for write permission */#define DMEXEC		0x1		/* mode bit for execute permission */ typedefstruct Qid{	uvlong	path;	ulong	vers;	uchar	type;} Qid; typedefstruct Dir {	/* system-modified data */	ushort	type;	/* server type */	uint	dev;	/* server subtype */	/* file data */	Qid	qid;	/* unique id from server */	ulong	mode;	/* permissions */	ulong	atime;	/* last read time */	ulong	mtime;	/* last write time */	vlong	length;	/* file length */	char	*name;	/* last element of path */	char	*uid;	/* owner name */	char	*gid;	/* group name */	char	*muid;	/* last modifier name */} Dir; extern	Dir*	dirstat(char*);extern	Dir*	dirfstat(int);extern	int	dirwstat(char*, Dir*);extern	int	dirfwstat(int, Dir*);extern	long	dirread(int, Dir**);extern	void	nulldir(Dir*);extern	long	dirreadall(int, Dir**); typedefstruct Waitmsg{	int pid;	/* of loved one */	ulong time[3];	/* of loved one & descendants */	char	*msg;} Waitmsg; extern	void	_exits(char*); extern	void	exits(char*);extern	int	create(char*, int, int);extern	int	errstr(char*, uint); extern	void	perror(const char*);extern	long	readn(int, void*, long);extern	int	remove(const char*);extern	void	rerrstr(char*, uint);extern	vlong	seek(int, vlong, int);extern	int	segflush(void*, ulong);extern	void	werrstr(char*, ...); extern char *argv0;#define	ARGBEGIN	for((argv0||(argv0=*argv)),argv++,argc--;\			    argv[0] && argv[0][0]=='-' && argv[0][1];\			    argc--, argv++) {\				char *_args, *_argt;\				Rune _argc;\				_args = &argv[0][1];\				if(_args[0]=='-' && _args[1]==0){\					argc--; argv++; break;\				}\				_argc = 0;\				while(*_args && (_args += chartorune(&_argc, _args)))\				switch(_argc)#define	ARGEND		SET(_argt);USED(_argt);USED(_argc); USED(_args);}USED(argv); USED(argc);#define	ARGF()		(_argt=_args, _args="",\				(*_argt? _argt: argv[1]? (argc--, *++argv): 0))#define	EARGF(x)	(_argt=_args, _args="",\				(*_argt? _argt: argv[1]? (argc--, *++argv): ((x), abort(), (char*)0))) #define	ARGC()		_argc /* *	Extensions for Inferno to basic libc.h */ #define	setbinmode()