1 /*
2  * Lib9 is miscellany from the Plan 9 C library that doesn't
3  * fit into libutf or into libfmt, but is still missing from traditional
4  * Unix C libraries.
5  */
6 #ifndef _LIB9_H_
7 #define _LIB9_H_ 1
8 #if defined(__cplusplus)
9 extern "C" {
10 #endif                                                                          
11 
12 #define _BSD_SOURCE 1
13 #define _SVID_SOURCE 1
14 #define _XOPEN_SOURCE 1000
15 #define _XOPEN_SOURCE_EXTENDED 1
16 #define _LARGEFILE64_SOURCE 1
17 #define _FILE_OFFSET_BITS 64
18 #define __EXTENSIONS__ 1 /* SunOS */
19 
20 #include <unistd.h>
21 #include <string.h>
22 #include <stdlib.h>
23 #include <stdarg.h>
24 #include <fcntl.h>
25 #include <assert.h>
26 #include <setjmp.h>
27 #include <stddef.h>
28 #include <utf.h>
29 #include <fmt.h>
30 #include <math.h>
31 
32 /*
33  * OS-specific crap
34  */
35 #define _NEEDUCHAR 1
36 #define _NEEDUSHORT 1
37 #define _NEEDUINT 1
38 #define _NEEDULONG 1
39 
40 typedef long p9jmp_buf[sizeof(sigjmp_buf)/sizeof(long)];
41 
42 #if defined(__linux__)
43 #	include <sys/types.h>
44 #	if defined(__USE_MISC)
45 #		undef _NEEDUSHORT
46 #		undef _NEEDUINT
47 #		undef _NEEDULONG
48 #	endif
49 #endif
50 #if defined(__sun__)
51 #	include <sys/types.h>
52 #	undef _NEEDUSHORT
53 #	undef _NEEDUINT
54 #	undef _NEEDULONG
55 #endif
56 #if defined(__FreeBSD__)
57 #	include <sys/types.h>
58 #	if !defined(_POSIX_SOURCE)
59 #		undef _NEEDUSHORT
60 #		undef _NEEDUINT
61 #	endif
62 #endif
63 #if defined(__APPLE__)
64 #	include <sys/types.h>
65 #	undef _NEEDUSHORT
66 #	undef _NEEDUINT
67 #	define _NEEDLL 1
68 #endif
69 
70 typedef signed char schar;
71 typedef unsigned int u32int;
72 #ifdef _NEEDUCHAR
73 	typedef unsigned char uchar;
74 #endif
75 #ifdef _NEEDUSHORT
76 	typedef unsigned short ushort;
77 #endif
78 #ifdef _NEEDUINT
79 	typedef unsigned int uint;
80 #endif
81 #ifdef _NEEDULONG
82 	typedef unsigned long ulong;
83 #endif
84 typedef unsigned long long uvlong;
85 typedef long long vlong;
86 typedef uvlong u64int;
87 typedef uchar u8int;
88 typedef ushort u16int;
89 
90 #undef _NEEDUCHAR
91 #undef _NEEDUSHORT
92 #undef _NEEDUINT
93 #undef _NEEDULONG
94 
95 /*
96  * Begin usual libc.h 
97  */
98 
99 #define	nil	((void*)0)
100 #define	nelem(x)	(sizeof(x)/sizeof((x)[0]))
101 
102 #ifndef offsetof
103 #define offsetof(s, m)	(ulong)(&(((s*)0)->m))
104 #endif
105 
106 /*
107  * mem routines (provided by system <string.h>)
108  *
109 extern	void*	memccpy(void*, void*, int, ulong);
110 extern	void*	memset(void*, int, ulong);
111 extern	int	memcmp(void*, void*, ulong);
112 extern	void*	memcpy(void*, void*, ulong);
113 extern	void*	memmove(void*, void*, ulong);
114 extern	void*	memchr(void*, int, ulong);
115  */
116 
117 /*
118  * string routines (provided by system <string.h>)
119  *
120 extern	char*	strcat(char*, char*);
121 extern	char*	strchr(char*, int);
122 extern	int	strcmp(char*, char*);
123 extern	char*	strcpy(char*, char*);
124  */
125 extern	char*	strecpy(char*, char*, char*);
126  /*
127 extern	char*	strdup(char*);
128 extern	char*	strncat(char*, char*, long);
129 extern	char*	strncpy(char*, char*, long);
130 extern	int	strncmp(char*, char*, long);
131 extern	char*	strpbrk(char*, char*);
132 extern	char*	strrchr(char*, int);
133 extern	char*	strtok(char*, char*);
134 extern	long	strlen(char*);
135 extern	long	strspn(char*, char*);
136 extern	long	strcspn(char*, char*);
137 extern	char*	strstr(char*, char*);
138  */
139 extern	int	cistrncmp(char*, char*, int);
140 extern	int	cistrcmp(char*, char*);
141 extern	char*	cistrstr(char*, char*);
142 extern	int	tokenize(char*, char**, int);
143 
144 /*
145 enum
146 {
147 	UTFmax		= 3,
148 	Runesync	= 0x80,
149 	Runeself	= 0x80,
150 	Runeerror	= 0x80,
151 };
152 */
153 
154 /*
155  * rune routines (provided by <utf.h>
156  *
157 extern	int	runetochar(char*, Rune*);
158 extern	int	chartorune(Rune*, char*);
159 extern	int	runelen(long);
160 extern	int	runenlen(Rune*, int);
161 extern	int	fullrune(char*, int);
162 extern	int	utflen(char*);
163 extern	int	utfnlen(char*, long);
164 extern	char*	utfrune(char*, long);
165 extern	char*	utfrrune(char*, long);
166 extern	char*	utfutf(char*, char*);
167 extern	char*	utfecpy(char*, char*, char*);
168 
169 extern	Rune*	runestrcat(Rune*, Rune*);
170 extern	Rune*	runestrchr(Rune*, Rune);
171 extern	int	runestrcmp(Rune*, Rune*);
172 extern	Rune*	runestrcpy(Rune*, Rune*);
173 extern	Rune*	runestrncpy(Rune*, Rune*, long);
174 extern	Rune*	runestrecpy(Rune*, Rune*, Rune*);
175 extern	Rune*	runestrdup(Rune*);
176 extern	Rune*	runestrncat(Rune*, Rune*, long);
177 extern	int	runestrncmp(Rune*, Rune*, long);
178 extern	Rune*	runestrrchr(Rune*, Rune);
179 extern	long	runestrlen(Rune*);
180 extern	Rune*	runestrstr(Rune*, Rune*);
181 
182 extern	Rune	tolowerrune(Rune);
183 extern	Rune	totitlerune(Rune);
184 extern	Rune	toupperrune(Rune);
185 extern	int	isalpharune(Rune);
186 extern	int	islowerrune(Rune);
187 extern	int	isspacerune(Rune);
188 extern	int	istitlerune(Rune);
189 extern	int	isupperrune(Rune);
190  */
191 
192 /*
193  * malloc (provied by system <stdlib.h>)
194  *
195 extern	void*	malloc(ulong);
196  */
197 extern	void*	p9malloc(ulong);
198 extern	void*	mallocz(ulong, int);
199 /*
200 extern	void	free(void*);
201 extern	ulong	msize(void*);
202 extern	void*	calloc(ulong, ulong);
203 extern	void*	realloc(void*, ulong);
204  */
205 extern	void		setmalloctag(void*, ulong);
206 extern	void		setrealloctag(void*, ulong);
207 extern	ulong	getmalloctag(void*);
208 extern	ulong	getrealloctag(void*);
209 /*
210 extern	void*	malloctopoolblock(void*);
211 */
212 #ifndef NOPLAN9DEFINES
213 #define	malloc	p9malloc
214 #endif
215 
216 /*
217  * print routines (provided by <fmt.h>)
218  *
219 typedef struct Fmt	Fmt;
220 struct Fmt{
221 	uchar	runes;
222 	void	*start;
223 	void	*to;
224 	void	*stop;
225 	int	(*flush)(Fmt *);
226 	void	*farg;
227 	int	nfmt;
228 	va_list	args;
229 	int	r;
230 	int	width;
231 	int	prec;
232 	ulong	flags;
233 };
234 
235 enum{
236 	FmtWidth	= 1,
237 	FmtLeft		= FmtWidth << 1,
238 	FmtPrec		= FmtLeft << 1,
239 	FmtSharp	= FmtPrec << 1,
240 	FmtSpace	= FmtSharp << 1,
241 	FmtSign		= FmtSpace << 1,
242 	FmtZero		= FmtSign << 1,
243 	FmtUnsigned	= FmtZero << 1,
244 	FmtShort	= FmtUnsigned << 1,
245 	FmtLong		= FmtShort << 1,
246 	FmtVLong	= FmtLong << 1,
247 	FmtComma	= FmtVLong << 1,
248 	FmtByte	= FmtComma << 1,
249 
250 	FmtFlag		= FmtByte << 1
251 };
252 
253 extern	int	print(char*, ...);
254 extern	char*	seprint(char*, char*, char*, ...);
255 extern	char*	vseprint(char*, char*, char*, va_list);
256 extern	int	snprint(char*, int, char*, ...);
257 extern	int	vsnprint(char*, int, char*, va_list);
258 extern	char*	smprint(char*, ...);
259 extern	char*	vsmprint(char*, va_list);
260 extern	int	sprint(char*, char*, ...);
261 extern	int	fprint(int, char*, ...);
262 extern	int	vfprint(int, char*, va_list);
263 
264 extern	int	runesprint(Rune*, char*, ...);
265 extern	int	runesnprint(Rune*, int, char*, ...);
266 extern	int	runevsnprint(Rune*, int, char*, va_list);
267 extern	Rune*	runeseprint(Rune*, Rune*, char*, ...);
268 extern	Rune*	runevseprint(Rune*, Rune*, char*, va_list);
269 extern	Rune*	runesmprint(char*, ...);
270 extern	Rune*	runevsmprint(char*, va_list);
271 
272 extern	int	fmtfdinit(Fmt*, int, char*, int);
273 extern	int	fmtfdflush(Fmt*);
274 extern	int	fmtstrinit(Fmt*);
275 extern	char*	fmtstrflush(Fmt*);
276 extern	int	runefmtstrinit(Fmt*);
277 extern	Rune*	runefmtstrflush(Fmt*);
278 
279 extern	int	fmtinstall(int, int (*)(Fmt*));
280 extern	int	dofmt(Fmt*, char*);
281 extern	int	dorfmt(Fmt*, Rune*);
282 extern	int	fmtprint(Fmt*, char*, ...);
283 extern	int	fmtvprint(Fmt*, char*, va_list);
284 extern	int	fmtrune(Fmt*, int);
285 extern	int	fmtstrcpy(Fmt*, char*);
286 extern	int	fmtrunestrcpy(Fmt*, Rune*);
287  */
288 
289 /*
290  * error string for %r
291  * supplied on per os basis, not part of fmt library
292  *
293  * (provided by lib9, but declared in fmt.h)
294  *
295 extern	int	errfmt(Fmt *f);
296  */
297 
298 /*
299  * quoted strings
300  */
301 extern	char	*unquotestrdup(char*);
302 extern	Rune	*unquoterunestrdup(Rune*);
303 extern	char	*quotestrdup(char*);
304 extern	Rune	*quoterunestrdup(Rune*);
305 /*
306  * in fmt.h
307  *
308 extern	void	quotefmtinstall(void);
309 extern	int	quotestrfmt(Fmt*);
310 extern	int	quoterunestrfmt(Fmt*);
311  */
312 #ifndef NOPLAN9DEFINES
313 #define doquote fmtdoquote
314 #endif
315 extern	int	needsrcquote(int);
316 
317 /*
318  * random number (in <stdlib.h>)
319  *
320 extern	void	srand(long);
321 extern	int	rand(void);
322  */
323 extern	int	nrand(int);
324 extern	long	lrand(void);
325 extern	long	lnrand(long);
326 extern	double	frand(void);
327 extern	ulong	truerand(void);			/* uses /dev/random */
328 extern	ulong	ntruerand(ulong);		/* uses /dev/random */
329 
330 /*
331  * math
332  */
333 extern	ulong	getfcr(void);
334 extern	void	setfsr(ulong);
335 extern	ulong	getfsr(void);
336 extern	void	setfcr(ulong);
337 extern	double	NaN(void);
338 extern	double	Inf(int);
339 extern	int	isNaN(double);
340 extern	int	isInf(double, int);
341 extern	ulong	umuldiv(ulong, ulong, ulong);
342 extern	long	muldiv(long, long, long);
343 
344 /*
345  * provided by math.h
346  *
347 extern	double	pow(double, double);
348 extern	double	atan2(double, double);
349 extern	double	fabs(double);
350 extern	double	atan(double);
351 extern	double	log(double);
352 extern	double	log10(double);
353 extern	double	exp(double);
354 extern	double	floor(double);
355 extern	double	ceil(double);
356 extern	double	hypot(double, double);
357 extern	double	sin(double);
358 extern	double	cos(double);
359 extern	double	tan(double);
360 extern	double	asin(double);
361 extern	double	acos(double);
362 extern	double	sinh(double);
363 extern	double	cosh(double);
364 extern	double	tanh(double);
365 extern	double	sqrt(double);
366 extern	double	fmod(double, double);
367 #define	HUGE	3.4028234e38
368 #define	PIO2	1.570796326794896619231e0
369 #define	PI	(PIO2+PIO2)
370  */
371 #define PI	M_PI
372 #define	PIO2	M_PI_2
373 
374 /*
375  * Time-of-day
376  */
377 
378 typedef
379 struct Tm
380 {
381 	int	sec;
382 	int	min;
383 	int	hour;
384 	int	mday;
385 	int	mon;
386 	int	year;
387 	int	wday;
388 	int	yday;
389 	char	zone[4];
390 	int	tzoff;
391 } Tm;
392 
393 extern	Tm*	p9gmtime(long);
394 extern	Tm*	p9localtime(long);
395 extern	char*	p9asctime(Tm*);
396 extern	char*	p9ctime(long);
397 extern	double	p9cputime(void);
398 extern	long	p9times(long*);
399 extern	long	p9tm2sec(Tm*);
400 extern	vlong	p9nsec(void);
401 
402 #ifndef NOPLAN9DEFINES
403 #define	gmtime		p9gmtime
404 #define	localtime	p9localtime
405 #define	asctime		p9asctime
406 #define	ctime		p9ctime
407 #define	cputime		p9cputime
408 #define	times		p9times
409 #define	tm2sec		p9tm2sec
410 #define	nsec		p9nsec
411 #endif
412 
413 /*
414  * one-of-a-kind
415  */
416 enum
417 {
418 	PNPROC		= 1,
419 	PNGROUP		= 2,
420 };
421 
422 /* extern	int	abs(int); <stdlib.h> */
423 extern	int	p9atexit(void(*)(void));
424 extern	void	p9atexitdont(void(*)(void));
425 extern	int	atnotify(int(*)(void*, char*), int);
426 /* 
427  * <stdlib.h>
428 extern	double	atof(char*); <stdlib.h>
429 extern	int	atoi(char*);
430 extern	long	atol(char*);
431  */
432 extern	vlong	atoll(const char*);
433 extern	double	charstod(int(*)(void*), void*);
434 extern	char*	cleanname(char*);
435 extern	int	p9decrypt(void*, void*, int);
436 extern	int	p9encrypt(void*, void*, int);
437 extern	int	dec64(uchar*, int, char*, int);
438 extern	int	enc64(char*, int, uchar*, int);
439 extern	int	dec32(uchar*, int, char*, int);
440 extern	int	enc32(char*, int, uchar*, int);
441 extern	int	dec16(uchar*, int, char*, int);
442 extern	int	enc16(char*, int, uchar*, int);
443 extern	int	encodefmt(Fmt*);
444 extern	int	dirmodefmt(Fmt*);
445 extern	void	exits(char*);
446 extern	double	frexp(double, int*);
447 extern	ulong	getcallerpc(void*);
448 extern	char*	p9getenv(char*);
449 extern	int	p9putenv(char*, char*);
450 extern	int	getfields(char*, char**, int, int, char*);
451 extern	int	gettokens(char *, char **, int, char *);
452 extern	char*	getuser(void);
453 extern	char*	p9getwd(char*, int);
454 extern	int	iounit(int);
455 /* extern	long	labs(long); <math.h> */
456 /* extern	double	ldexp(double, int); <math.h> */
457 extern	void	p9longjmp(p9jmp_buf, int);
458 extern	char*	mktemp(char*);
459 /* extern	double	modf(double, double*); <math.h> */
460 extern	int	netcrypt(void*, void*);
461 extern	void	p9notejmp(void*, p9jmp_buf, int);
462 extern	void	perror(const char*);
463 extern	int	postnote(int, int, char *);
464 extern	double	pow10(int);
465 /* extern	int	putenv(char*, char*); <stdlib.h. */
466 /* extern	void	qsort(void*, long, long, int (*)(void*, void*)); <stdlib.h> */
467 /* extern	int	p9setjmp(p9jmp_buf); */
468 #define p9setjmp(b)	sigsetjmp((void*)(b), 1)
469 /*
470  * <stdlib.h>
471 extern	double	strtod(char*, char**);
472 extern	long	strtol(char*, char**, int);
473 extern	ulong	strtoul(char*, char**, int);
474 extern	vlong	strtoll(char*, char**, int);
475 extern	uvlong	strtoull(char*, char**, int);
476  */
477 extern	void	sysfatal(char*, ...);
478 extern	void	syslog(int, char*, char*, ...);
479 extern	long	time(long*);
480 /* extern	int	tolower(int); <ctype.h> */
481 /* extern	int	toupper(int); <ctype.h> */
482 #ifndef NOPLAN9DEFINES
483 #define atexit		p9atexit
484 #define atexitdont	p9atexitdont
485 #define getenv		p9getenv
486 #define	getwd		p9getwd
487 #define	longjmp		p9longjmp
488 #undef  setjmp
489 #define setjmp		p9setjmp
490 #define putenv		p9putenv
491 #define notejmp		p9notejmp
492 #define jmp_buf		p9jmp_buf
493 #endif
494 
495 /*
496  *  synchronization
497  */
498 typedef
499 struct Lock {
500 	int	val;
501 } Lock;
502 
503 extern int	_tas(int*);
504 
505 extern	void	lock(Lock*);
506 extern	void	unlock(Lock*);
507 extern	int	canlock(Lock*);
508 
509 typedef struct QLp QLp;
510 struct QLp
511 {
512 	int	inuse;
513 	QLp	*next;
514 	char	state;
515 };
516 
517 typedef
518 struct QLock
519 {
520 	Lock	lock;
521 	int	locked;
522 	QLp	*head;
523 	QLp 	*tail;
524 } QLock;
525 
526 extern	void	qlock(QLock*);
527 extern	void	qunlock(QLock*);
528 extern	int	canqlock(QLock*);
529 extern	void	_qlockinit(ulong (*)(ulong, ulong));	/* called only by the thread library */
530 
531 typedef
532 struct RWLock
533 {
534 	Lock	lock;
535 	int	readers;	/* number of readers */
536 	int	writer;		/* number of writers */
537 	QLp	*head;		/* list of waiting processes */
538 	QLp	*tail;
539 } RWLock;
540 
541 extern	void	rlock(RWLock*);
542 extern	void	runlock(RWLock*);
543 extern	int		canrlock(RWLock*);
544 extern	void	wlock(RWLock*);
545 extern	void	wunlock(RWLock*);
546 extern	int		canwlock(RWLock*);
547 
548 typedef
549 struct Rendez
550 {
551 	QLock *l;
552 	QLp	*head;
553 	QLp	*tail;
554 } Rendez;
555 
556 extern	void	rsleep(Rendez*);	/* unlocks r->l, sleeps, locks r->l again */
557 extern	int	rwakeup(Rendez*);
558 extern	int	rwakeupall(Rendez*);
559 extern	void**	privalloc(void);
560 extern	void	privfree(void**);
561 
562 /*
563  *  network dialing
564  */
565 #define NETPATHLEN 40
566 extern	int	p9accept(int, char*);
567 extern	int	p9announce(char*, char*);
568 extern	int	p9dial(char*, char*, char*, int*);
569 extern	void	p9setnetmtpt(char*, int, char*);
570 extern	int	p9hangup(int);
571 extern	int	p9listen(char*, char*);
572 extern	char*	p9netmkaddr(char*, char*, char*);
573 extern	int	p9reject(int, char*, char*);
574 
575 #ifndef NOPLAN9DEFINES
576 #define	accept		p9accept
577 #define	announce	p9announce
578 #define	dial		p9dial
579 #define	setnetmtpt	p9setnetmtpt
580 #define	hangup		p9hangup
581 #define	listen		p9listen
582 #define	netmkaddr	p9netmkaddr
583 #define	reject		p9reject
584 #endif
585 
586 /*
587  *  encryption
588  */
589 extern	int	pushssl(int, char*, char*, char*, int*);
590 extern	int	pushtls(int, char*, char*, int, char*, char*);
591 
592 /*
593  *  network services
594  */
595 typedef struct NetConnInfo NetConnInfo;
596 struct NetConnInfo
597 {
598 	char	*dir;		/* connection directory */
599 	char	*root;		/* network root */
600 	char	*spec;		/* binding spec */
601 	char	*lsys;		/* local system */
602 	char	*lserv;		/* local service */
603 	char	*rsys;		/* remote system */
604 	char	*rserv;		/* remote service */
605 };
606 extern	NetConnInfo*	getnetconninfo(char*, int);
607 extern	void		freenetconninfo(NetConnInfo*);
608 
609 /*
610  * system calls
611  *
612  */
613 #define	STATMAX	65535U	/* max length of machine-independent stat structure */
614 #define	DIRMAX	(sizeof(Dir)+STATMAX)	/* max length of Dir structure */
615 #define	ERRMAX	128	/* max length of error string */
616 
617 #define	MORDER	0x0003	/* mask for bits defining order of mounting */
618 #define	MREPL	0x0000	/* mount replaces object */
619 #define	MBEFORE	0x0001	/* mount goes before others in union directory */
620 #define	MAFTER	0x0002	/* mount goes after others in union directory */
621 #define	MCREATE	0x0004	/* permit creation in mounted directory */
622 #define	MCACHE	0x0010	/* cache some data */
623 #define	MMASK	0x0017	/* all bits on */
624 
625 #define	OREAD	0	/* open for read */
626 #define	OWRITE	1	/* write */
627 #define	ORDWR	2	/* read and write */
628 #define	OEXEC	3	/* execute, == read but check execute permission */
629 #define	OTRUNC	16	/* or'ed in (except for exec), truncate file first */
630 #define	OCEXEC	32	/* or'ed in, close on exec */
631 #define	ORCLOSE	64	/* or'ed in, remove on close */
632 #define	OEXCL	0x1000	/* or'ed in, exclusive use (create only) */
633 
634 #define	AEXIST	0	/* accessible: exists */
635 #define	AEXEC	1	/* execute access */
636 #define	AWRITE	2	/* write access */
637 #define	AREAD	4	/* read access */
638 
639 /* Segattch */
640 #define	SG_RONLY	0040	/* read only */
641 #define	SG_CEXEC	0100	/* detach on exec */
642 
643 #define	NCONT	0	/* continue after note */
644 #define	NDFLT	1	/* terminate after note */
645 #define	NSAVE	2	/* clear note but hold state */
646 #define	NRSTR	3	/* restore saved state */
647 
648 /* bits in Qid.type */
649 #define QTDIR		0x80		/* type bit for directories */
650 #define QTAPPEND	0x40		/* type bit for append only files */
651 #define QTEXCL		0x20		/* type bit for exclusive use files */
652 #define QTMOUNT		0x10		/* type bit for mounted channel */
653 #define QTAUTH		0x08		/* type bit for authentication file */
654 #define QTFILE		0x00		/* plain file */
655 
656 /* bits in Dir.mode */
657 #define DMDIR		0x80000000	/* mode bit for directories */
658 #define DMAPPEND	0x40000000	/* mode bit for append only files */
659 #define DMEXCL		0x20000000	/* mode bit for exclusive use files */
660 #define DMMOUNT		0x10000000	/* mode bit for mounted channel */
661 #define DMAUTH		0x08000000	/* mode bit for authentication file */
662 #define DMREAD		0x4		/* mode bit for read permission */
663 #define DMWRITE		0x2		/* mode bit for write permission */
664 #define DMEXEC		0x1		/* mode bit for execute permission */
665 
666 #if defined(__FreeBSD__)
667 #undef RFFDG
668 #undef RFNOTEG
669 #undef RFPROC
670 #undef RFMEM
671 #undef RFNOWAIT
672 #undef RFCFDG
673 #undef RFNAMEG
674 #undef RFENVG
675 #undef RFCENVG
676 #undef RFCFDG
677 #undef RFCNAMEG
678 #endif
679 
680 enum
681 {
682 	RFNAMEG		= (1<<0), 
683 	RFENVG		= (1<<1), 
684 	RFFDG		= (1<<2),
685 	RFNOTEG		= (1<<3),
686 	RFPROC		= (1<<4),
687 	RFMEM		= (1<<5),
688 	RFNOWAIT	= (1<<6),
689 	RFCNAMEG	= (1<<10), 
690 	RFCENVG		= (1<<11), 
691 	RFCFDG		= (1<<12),
692 /*	RFREND		= (1<<13), */
693 /*	RFNOMNT		= (1<<14) */
694 };
695 
696 extern int		ffork(int, void(*)(void*), void*);
697 
698 typedef
699 struct Qid
700 {
701 	uvlong	path;
702 	ulong	vers;
703 	uchar	type;
704 } Qid;
705 
706 typedef
707 struct Dir {
708 	/* system-modified data */
709 	ushort	type;	/* server type */
710 	uint	dev;	/* server subtype */
711 	/* file data */
712 	Qid	qid;	/* unique id from server */
713 	ulong	mode;	/* permissions */
714 	ulong	atime;	/* last read time */
715 	ulong	mtime;	/* last write time */
716 	vlong	length;	/* file length */
717 	char	*name;	/* last element of path */
718 	char	*uid;	/* owner name */
719 	char	*gid;	/* group name */
720 	char	*muid;	/* last modifier name */
721 } Dir;
722 
723 /* keep /sys/src/ape/lib/ap/plan9/sys9.h in sync with this -rsc */
724 typedef
725 struct Waitmsg
726 {
727 	int pid;	/* of loved one */
728 	ulong time[3];	/* of loved one & descendants */
729 	char	*msg;
730 } Waitmsg;
731 
732 typedef
733 struct IOchunk
734 {
735 	void	*addr;
736 	ulong	len;
737 } IOchunk;
738 
739 extern	void	_exits(char*);
740 
741 extern	void	abort(void);
742 extern	int	p9access(char*, int);
743 extern	long	p9alarm(ulong);
744 extern	int	await(char*, int);
745 /* extern	int	bind(char*, char*, int); give up */
746 /* extern	int	brk(void*); <unistd.h> */
747 extern	int	p9chdir(char*);
748 extern	int	close(int);
749 extern	int	p9create(char*, int, ulong);
750 extern	int	p9dup(int, int);
751 extern	int	errstr(char*, uint);
752 extern	int	p9exec(char*, char*[]);
753 /* extern	int	execl(char*, ...); <unistd.h> */
754 /* extern	int	fork(void); <unistd.h> */
755 extern	int	p9rfork(int);
756 /* not implemented 
757 extern	int	fauth(int, char*);
758 extern	int	fstat(int, uchar*, int);
759 extern	int	fwstat(int, uchar*, int);
760 extern	int	fversion(int, int, char*, int);
761 extern	int	mount(int, int, char*, int, char*);
762 extern	int	unmount(char*, char*);
763 */
764 extern	int	noted(int);
765 extern	int	notify(void(*)(void*, char*));
766 extern	int	p9open(char*, int);
767 extern	int	fd2path(int, char*, int);
768 extern	int	p9pipe(int*);
769 /* 
770  * use defs from <unistd.h>
771 extern	long	pread(int, void*, long, vlong);
772 extern	long	preadv(int, IOchunk*, int, vlong);
773 extern	long	pwrite(int, void*, long, vlong);
774 extern	long	pwritev(int, IOchunk*, int, vlong);
775 extern	long	read(int, void*, long);
776  */
777 extern	long	readn(int, void*, long);
778 /* extern	long	readv(int, IOchunk*, int); <unistd.h> */
779 extern	int	remove(const char*);
780 /* extern	void*	sbrk(ulong); <unistd.h> */
781 /* extern	long	oseek(int, long, int); */
782 extern	vlong	p9seek(int, vlong, int);
783 /* give up
784 extern	long	segattach(int, char*, void*, ulong);
785 extern	int	segbrk(void*, void*);
786 extern	int	segdetach(void*);
787 extern	int	segflush(void*, ulong);
788 extern	int	segfree(void*, ulong);
789 */
790 extern	int	p9sleep(long);
791 /* extern	int	stat(char*, uchar*, int); give up */
792 extern	Waitmsg*	p9wait(void);
793 extern	int	p9waitpid(void);
794 /* <unistd.h>
795 extern	long	write(int, void*, long);
796 extern	long	writev(int, IOchunk*, int);
797 */
798 /* extern	int	wstat(char*, uchar*, int); give up */
799 extern	ulong	rendezvous(ulong, ulong);
800 
801 #ifndef NOPLAN9DEFINES
802 #define alarm		p9alarm
803 #define	dup		p9dup
804 #define	exec		p9exec
805 #define	seek		p9seek
806 #define sleep		p9sleep
807 #define wait		p9wait
808 #define waitpid		p9waitpid
809 #define rfork		p9rfork
810 #define access		p9access
811 #define create		p9create
812 #define open		p9open
813 #define pipe		p9pipe
814 #endif
815 
816 extern	Dir*	dirstat(char*);
817 extern	Dir*	dirfstat(int);
818 extern	int	dirwstat(char*, Dir*);
819 extern	int	dirfwstat(int, Dir*);
820 extern	long	dirread(int, Dir**);
821 extern	void	nulldir(Dir*);
822 extern	long	dirreadall(int, Dir**);
823 /* extern	int	getpid(void); <unistd.h> */
824 /* extern	int	getppid(void); */
825 extern	void	rerrstr(char*, uint);
826 extern	char*	sysname(void);
827 extern	void	werrstr(char*, ...);
828 extern	char*	getns(void);
829 extern	int	sendfd(int, int);
830 extern	int	recvfd(int);
831 extern	int	post9pservice(int, char*);
832 
833 /* external names that we don't want to step on */
834 #ifndef NOPLAN9DEFINES
835 #define main	p9main
836 #endif
837 
838 /* compiler directives on plan 9 */
839 #define	USED(x)	if(x){}else{}
840 #define	SET(x)	((x)=0)
841 
842 /* command line */
843 extern char	*argv0;
844 extern void __fixargv0(void);
845 #define	ARGBEGIN	for((argv0?0:(argv0=(__fixargv0(),*argv))),argv++,argc--;\
846 			    argv[0] && argv[0][0]=='-' && argv[0][1];\
847 			    argc--, argv++) {\
848 				char *_args, *_argt;\
849 				Rune _argc;\
850 				_args = &argv[0][1];\
851 				if(_args[0]=='-' && _args[1]==0){\
852 					argc--; argv++; break;\
853 				}\
854 				_argc = 0;\
855 				while(*_args && (_args += chartorune(&_argc, _args)))\
856 				switch(_argc)
857 #define	ARGEND		SET(_argt);USED(_argt);USED(_argc);USED(_args);}USED(argv);USED(argc);
858 #define	ARGF()		(_argt=_args, _args="",\
859 				(*_argt? _argt: argv[1]? (argc--, *++argv): 0))
860 #define	EARGF(x)	(_argt=_args, _args="",\
861 				(*_argt? _argt: argv[1]? (argc--, *++argv): ((x), abort(), (char*)0)))
862 
863 #define	ARGC()		_argc
864 
865 #if defined(__cplusplus)
866 }
867 #endif
868 #endif	/* _LIB9_H_ */