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 _LIBC_H_
7 #define _LIBC_H_ 1
8 #if defined(__cplusplus)
9 extern "C" {
10 #endif                                                                
11 
12 #include <utf.h>
13 #include <fmt.h>
14 
15 /*
16  * Begin usual libc.h 
17  */
18 
19 #ifndef nil
20 #define	nil	((void*)0)
21 #endif
22 #define	nelem(x)	(sizeof(x)/sizeof((x)[0]))
23 
24 #ifndef offsetof
25 #define offsetof(s, m)	(ulong)(&(((s*)0)->m))
26 #endif
27 
28 /*
29  * mem routines (provided by system <string.h>)
30  *
31 extern	void*	memccpy(void*, void*, int, ulong);
32 extern	void*	memset(void*, int, ulong);
33 extern	int	memcmp(void*, void*, ulong);
34 extern	void*	memcpy(void*, void*, ulong);
35 extern	void*	memmove(void*, void*, ulong);
36 extern	void*	memchr(void*, int, ulong);
37  */
38 
39 /*
40  * string routines (provided by system <string.h>)
41  *
42 extern	char*	strcat(char*, char*);
43 extern	char*	strchr(char*, int);
44 extern	int	strcmp(char*, char*);
45 extern	char*	strcpy(char*, char*);
46  */
47 extern	char*	strecpy(char*, char*, char*);
48 extern	char*	p9strdup(char*);
49 /*
50 extern	char*	strncat(char*, char*, long);
51 extern	char*	strncpy(char*, char*, long);
52 extern	int	strncmp(char*, char*, long);
53 extern	char*	strpbrk(char*, char*);
54 extern	char*	strrchr(char*, int);
55 extern	char*	strtok(char*, char*);
56 extern	long	strlen(char*);
57 extern	long	strspn(char*, char*);
58 extern	long	strcspn(char*, char*);
59 extern	char*	strstr(char*, char*);
60  */
61 extern	int	cistrncmp(char*, char*, int);
62 extern	int	cistrcmp(char*, char*);
63 extern	char*	cistrstr(char*, char*);
64 extern	int	tokenize(char*, char**, int);
65 
66 /*
67 enum
68 {
69 	UTFmax		= 3,
70 	Runesync	= 0x80,
71 	Runeself	= 0x80,
72 	Runeerror	= 0x80,
73 };
74 */
75 
76 /*
77  * rune routines (provided by <utf.h>
78  *
79 extern	int	runetochar(char*, Rune*);
80 extern	int	chartorune(Rune*, char*);
81 extern	int	runelen(long);
82 extern	int	runenlen(Rune*, int);
83 extern	int	fullrune(char*, int);
84 extern	int	utflen(char*);
85 extern	int	utfnlen(char*, long);
86 extern	char*	utfrune(char*, long);
87 extern	char*	utfrrune(char*, long);
88 extern	char*	utfutf(char*, char*);
89 extern	char*	utfecpy(char*, char*, char*);
90 
91 extern	Rune*	runestrcat(Rune*, Rune*);
92 extern	Rune*	runestrchr(Rune*, Rune);
93 extern	int	runestrcmp(Rune*, Rune*);
94 extern	Rune*	runestrcpy(Rune*, Rune*);
95 extern	Rune*	runestrncpy(Rune*, Rune*, long);
96 extern	Rune*	runestrecpy(Rune*, Rune*, Rune*);
97 extern	Rune*	runestrdup(Rune*);
98 extern	Rune*	runestrncat(Rune*, Rune*, long);
99 extern	int	runestrncmp(Rune*, Rune*, long);
100 extern	Rune*	runestrrchr(Rune*, Rune);
101 extern	long	runestrlen(Rune*);
102 extern	Rune*	runestrstr(Rune*, Rune*);
103 
104 extern	Rune	tolowerrune(Rune);
105 extern	Rune	totitlerune(Rune);
106 extern	Rune	toupperrune(Rune);
107 extern	int	isalpharune(Rune);
108 extern	int	islowerrune(Rune);
109 extern	int	isspacerune(Rune);
110 extern	int	istitlerune(Rune);
111 extern	int	isupperrune(Rune);
112  */
113 
114 /*
115  * malloc (provied by system <stdlib.h>)
116  *
117 extern	void*	malloc(ulong);
118  */
119 extern	void*	p9malloc(ulong);
120 extern	void*	mallocz(ulong, int);
121 extern	void	p9free(void*);
122 extern	void*	p9calloc(ulong, ulong);
123 extern	void*	p9realloc(void*, ulong);
124 extern	void		setmalloctag(void*, ulong);
125 extern	void		setrealloctag(void*, ulong);
126 extern	ulong	getmalloctag(void*);
127 extern	ulong	getrealloctag(void*);
128 /*
129 extern	void*	malloctopoolblock(void*);
130 */
131 #ifndef NOPLAN9DEFINES
132 #define	malloc	p9malloc
133 #define	realloc	p9realloc
134 #define	calloc	p9calloc
135 #define	free	p9free
136 #undef strdup
137 #define	strdup	p9strdup
138 #endif
139 
140 /*
141  * print routines (provided by <fmt.h>)
142  *
143 typedef struct Fmt	Fmt;
144 struct Fmt{
145 	uchar	runes;
146 	void	*start;
147 	void	*to;
148 	void	*stop;
149 	int	(*flush)(Fmt *);
150 	void	*farg;
151 	int	nfmt;
152 	va_list	args;
153 	int	r;
154 	int	width;
155 	int	prec;
156 	ulong	flags;
157 };
158 
159 enum{
160 	FmtWidth	= 1,
161 	FmtLeft		= FmtWidth << 1,
162 	FmtPrec		= FmtLeft << 1,
163 	FmtSharp	= FmtPrec << 1,
164 	FmtSpace	= FmtSharp << 1,
165 	FmtSign		= FmtSpace << 1,
166 	FmtZero		= FmtSign << 1,
167 	FmtUnsigned	= FmtZero << 1,
168 	FmtShort	= FmtUnsigned << 1,
169 	FmtLong		= FmtShort << 1,
170 	FmtVLong	= FmtLong << 1,
171 	FmtComma	= FmtVLong << 1,
172 	FmtByte	= FmtComma << 1,
173 
174 	FmtFlag		= FmtByte << 1
175 };
176 
177 extern	int	print(char*, ...);
178 extern	char*	seprint(char*, char*, char*, ...);
179 extern	char*	vseprint(char*, char*, char*, va_list);
180 extern	int	snprint(char*, int, char*, ...);
181 extern	int	vsnprint(char*, int, char*, va_list);
182 extern	char*	smprint(char*, ...);
183 extern	char*	vsmprint(char*, va_list);
184 extern	int	sprint(char*, char*, ...);
185 extern	int	fprint(int, char*, ...);
186 extern	int	vfprint(int, char*, va_list);
187 
188 extern	int	runesprint(Rune*, char*, ...);
189 extern	int	runesnprint(Rune*, int, char*, ...);
190 extern	int	runevsnprint(Rune*, int, char*, va_list);
191 extern	Rune*	runeseprint(Rune*, Rune*, char*, ...);
192 extern	Rune*	runevseprint(Rune*, Rune*, char*, va_list);
193 extern	Rune*	runesmprint(char*, ...);
194 extern	Rune*	runevsmprint(char*, va_list);
195 
196 extern	int	fmtfdinit(Fmt*, int, char*, int);
197 extern	int	fmtfdflush(Fmt*);
198 extern	int	fmtstrinit(Fmt*);
199 extern	char*	fmtstrflush(Fmt*);
200 extern	int	runefmtstrinit(Fmt*);
201 extern	Rune*	runefmtstrflush(Fmt*);
202 
203 extern	int	fmtinstall(int, int (*)(Fmt*));
204 extern	int	dofmt(Fmt*, char*);
205 extern	int	dorfmt(Fmt*, Rune*);
206 extern	int	fmtprint(Fmt*, char*, ...);
207 extern	int	fmtvprint(Fmt*, char*, va_list);
208 extern	int	fmtrune(Fmt*, int);
209 extern	int	fmtstrcpy(Fmt*, char*);
210 extern	int	fmtrunestrcpy(Fmt*, Rune*);
211  */
212 
213 /*
214  * error string for %r
215  * supplied on per os basis, not part of fmt library
216  *
217  * (provided by lib9, but declared in fmt.h)
218  *
219 extern	int	errfmt(Fmt *f);
220  */
221 
222 /*
223  * quoted strings
224  */
225 extern	char	*unquotestrdup(char*);
226 extern	Rune	*unquoterunestrdup(Rune*);
227 extern	char	*quotestrdup(char*);
228 extern	Rune	*quoterunestrdup(Rune*);
229 /*
230  * in fmt.h
231  *
232 extern	void	quotefmtinstall(void);
233 extern	int	quotestrfmt(Fmt*);
234 extern	int	quoterunestrfmt(Fmt*);
235  */
236 #ifndef NOPLAN9DEFINES
237 #define doquote fmtdoquote
238 #endif
239 extern	int	needsrcquote(int);
240 
241 /*
242  * random number
243  */
244 extern	void	p9srand(long);
245 extern	int	p9rand(void);
246 
247 extern	int	p9nrand(int);
248 extern	long	p9lrand(void);
249 extern	long	p9lnrand(long);
250 extern	double	p9frand(void);
251 extern	ulong	truerand(void);			/* uses /dev/random */
252 extern	ulong	ntruerand(ulong);		/* uses /dev/random */
253 
254 #ifndef NOPLAN9DEFINES
255 #define	srand	p9srand
256 #define	rand	p9rand
257 #define	nrand	p9nrand
258 #define	lrand	p9lrand
259 #define	lnrand	p9lnrand
260 #define	frand	p9frand
261 #endif
262 
263 /*
264  * math
265  */
266 extern	ulong	getfcr(void);
267 extern	void	setfsr(ulong);
268 extern	ulong	getfsr(void);
269 extern	void	setfcr(ulong);
270 extern	double	NaN(void);
271 extern	double	Inf(int);
272 extern	int	isNaN(double);
273 extern	int	isInf(double, int);
274 extern	ulong	umuldiv(ulong, ulong, ulong);
275 extern	long	muldiv(long, long, long);
276 
277 /*
278  * provided by math.h
279  *
280 extern	double	pow(double, double);
281 extern	double	atan2(double, double);
282 extern	double	fabs(double);
283 extern	double	atan(double);
284 extern	double	log(double);
285 extern	double	log10(double);
286 extern	double	exp(double);
287 extern	double	floor(double);
288 extern	double	ceil(double);
289 extern	double	hypot(double, double);
290 extern	double	sin(double);
291 extern	double	cos(double);
292 extern	double	tan(double);
293 extern	double	asin(double);
294 extern	double	acos(double);
295 extern	double	sinh(double);
296 extern	double	cosh(double);
297 extern	double	tanh(double);
298 extern	double	sqrt(double);
299 extern	double	fmod(double, double);
300 #define	HUGE	3.4028234e38
301 #define	PIO2	1.570796326794896619231e0
302 #define	PI	(PIO2+PIO2)
303  */
304 #define PI	M_PI
305 #define	PIO2	M_PI_2
306 
307 /*
308  * Time-of-day
309  */
310 
311 typedef
312 struct Tm
313 {
314 	int	sec;
315 	int	min;
316 	int	hour;
317 	int	mday;
318 	int	mon;
319 	int	year;
320 	int	wday;
321 	int	yday;
322 	char	zone[4];
323 	int	tzoff;
324 } Tm;
325 
326 extern	Tm*	p9gmtime(long);
327 extern	Tm*	p9localtime(long);
328 extern	char*	p9asctime(Tm*);
329 extern	char*	p9ctime(long);
330 extern	double	p9cputime(void);
331 extern	long	p9times(long*);
332 extern	long	p9tm2sec(Tm*);
333 extern	vlong	p9nsec(void);
334 
335 #ifndef NOPLAN9DEFINES
336 #define	gmtime		p9gmtime
337 #define	localtime	p9localtime
338 #define	asctime		p9asctime
339 #define	ctime		p9ctime
340 #define	cputime		p9cputime
341 #define	times		p9times
342 #define	tm2sec		p9tm2sec
343 #define	nsec		p9nsec
344 #endif
345 
346 /*
347  * one-of-a-kind
348  */
349 enum
350 {
351 	PNPROC		= 1,
352 	PNGROUP		= 2,
353 };
354 
355 /* extern	int	abs(int); <stdlib.h> */
356 extern	int	p9atexit(void(*)(void));
357 extern	void	p9atexitdont(void(*)(void));
358 extern	int	atnotify(int(*)(void*, char*), int);
359 /* 
360  * <stdlib.h>
361 extern	double	atof(char*); <stdlib.h>
362  */
363 extern	int	p9atoi(char*);
364 extern	long	p9atol(char*);
365 extern	vlong	p9atoll(char*);
366 extern	double	fmtcharstod(int(*)(void*), void*);
367 extern	char*	cleanname(char*);
368 extern	int	p9decrypt(void*, void*, int);
369 extern	int	p9encrypt(void*, void*, int);
370 extern	int	netcrypt(void*, void*);
371 extern	int	dec64(uchar*, int, char*, int);
372 extern	int	enc64(char*, int, uchar*, int);
373 extern	int	dec32(uchar*, int, char*, int);
374 extern	int	enc32(char*, int, uchar*, int);
375 extern	int	dec16(uchar*, int, char*, int);
376 extern	int	enc16(char*, int, uchar*, int);
377 extern	int	encodefmt(Fmt*);
378 extern	int	dirmodefmt(Fmt*);
379 extern	void	exits(char*);
380 extern	double	frexp(double, int*);
381 extern	ulong	getcallerpc(void*);
382 extern	char*	p9getenv(char*);
383 extern	int	p9putenv(char*, char*);
384 extern	int	getfields(char*, char**, int, int, char*);
385 extern	int	gettokens(char *, char **, int, char *);
386 extern	char*	getuser(void);
387 extern	char*	p9getwd(char*, int);
388 extern	int	iounit(int);
389 /* extern	long	labs(long); <math.h> */
390 /* extern	double	ldexp(double, int); <math.h> */
391 extern	void	p9longjmp(p9jmp_buf, int);
392 extern	char*	mktemp(char*);
393 extern	int		opentemp(char*);
394 /* extern	double	modf(double, double*); <math.h> */
395 extern	void	p9notejmp(void*, p9jmp_buf, int);
396 extern	void	perror(const char*);
397 extern	int	postnote(int, int, char *);
398 extern	double	p9pow10(int);
399 /* extern	int	putenv(char*, char*); <stdlib.h. */
400 /* extern	void	qsort(void*, long, long, int (*)(void*, void*)); <stdlib.h> */
401 extern	char*	searchpath(char*);
402 /* extern	int	p9setjmp(p9jmp_buf); */
403 #define p9setjmp(b)	sigsetjmp((void*)(b), 1)
404 /*
405  * <stdlib.h>
406 extern	long	strtol(char*, char**, int);
407 extern	ulong	strtoul(char*, char**, int);
408 extern	vlong	strtoll(char*, char**, int);
409 extern	uvlong	strtoull(char*, char**, int);
410  */
411 extern	void	sysfatal(char*, ...);
412 extern	void	p9syslog(int, char*, char*, ...);
413 extern	long	p9time(long*);
414 /* extern	int	tolower(int); <ctype.h> */
415 /* extern	int	toupper(int); <ctype.h> */
416 extern	void	needstack(int);
417 extern	char*	readcons(char*, char*, int);
418 
419 #ifndef NOPLAN9DEFINES
420 #define atexit		p9atexit
421 #define atexitdont	p9atexitdont
422 #define atoi		p9atoi
423 #define atol		p9atol
424 #define atoll		p9atoll
425 #define encrypt		p9encrypt
426 #define decrypt		p9decrypt
427 #define getenv		p9getenv
428 #define	getwd		p9getwd
429 #define	longjmp		p9longjmp
430 #undef  setjmp
431 #define setjmp		p9setjmp
432 #define putenv		p9putenv
433 #define notejmp		p9notejmp
434 #define jmp_buf		p9jmp_buf
435 #define time		p9time
436 #define pow10		p9pow10
437 #define strtod		fmtstrtod
438 #define charstod	fmtcharstod
439 #define syslog		p9syslog
440 #endif
441 
442 /*
443  *  just enough information so that libc can be
444  *  properly locked without dragging in all of libthread
445  */
446 typedef struct _Thread _Thread;
447 typedef struct _Threadlist _Threadlist;
448 struct _Threadlist
449 {
450 	_Thread	*head;
451 	_Thread	*tail;
452 };
453 
454 extern	_Thread	*(*threadnow)(void);
455 
456 /*
457  *  synchronization
458  */
459 typedef struct Lock Lock;
460 struct Lock
461 {
462 #ifdef PLAN9PORT_USING_PTHREADS
463 	int init;
464 	pthread_mutex_t mutex;
465 #endif
466 	int held;
467 };
468 
469 extern	void	lock(Lock*);
470 extern	void	unlock(Lock*);
471 extern	int	canlock(Lock*);
472 extern	int	(*_lock)(Lock*, int, ulong);
473 extern	void	(*_unlock)(Lock*, ulong);	
474 
475 typedef struct QLock QLock;
476 struct QLock
477 {
478 	Lock		l;
479 	_Thread	*owner;
480 	_Threadlist	waiting;
481 };
482 
483 extern	void	qlock(QLock*);
484 extern	void	qunlock(QLock*);
485 extern	int	canqlock(QLock*);
486 extern	int	(*_qlock)(QLock*, int, ulong);	/* do not use */
487 extern	void	(*_qunlock)(QLock*, ulong);
488 
489 typedef struct Rendez Rendez;
490 struct Rendez
491 {
492 	QLock	*l;
493 	_Threadlist	waiting;
494 };
495 
496 extern	void	rsleep(Rendez*);	/* unlocks r->l, sleeps, locks r->l again */
497 extern	int	rwakeup(Rendez*);
498 extern	int	rwakeupall(Rendez*);
499 extern	void	(*_rsleep)(Rendez*, ulong);	/* do not use */
500 extern	int	(*_rwakeup)(Rendez*, int, ulong);
501 
502 typedef struct RWLock RWLock;
503 struct RWLock
504 {
505 	Lock		l;
506 	int	readers;
507 	_Thread	*writer;
508 	_Threadlist	rwaiting;
509 	_Threadlist	wwaiting;
510 };
511 
512 extern	void	rlock(RWLock*);
513 extern	void	runlock(RWLock*);
514 extern	int		canrlock(RWLock*);
515 extern	void	wlock(RWLock*);
516 extern	void	wunlock(RWLock*);
517 extern	int		canwlock(RWLock*);
518 extern	int	(*_rlock)(RWLock*, int, ulong);	/* do not use */
519 extern	int	(*_wlock)(RWLock*, int, ulong);
520 extern	void	(*_runlock)(RWLock*, ulong);
521 extern	void	(*_wunlock)(RWLock*, ulong);
522 
523 /*
524  * per-process private data
525  */
526 extern	void**	privalloc(void);
527 extern	void	privfree(void**);
528 
529 /*
530  *  network dialing
531  */
532 #define NETPATHLEN 40
533 extern	int	p9accept(int, char*);
534 extern	int	p9announce(char*, char*);
535 extern	int	p9dial(char*, char*, char*, int*);
536 extern	int	p9dialparse(char *ds, char **net, char **unixa, u32int *ip, int *port);
537 extern	void	p9setnetmtpt(char*, int, char*);
538 extern	int	p9listen(char*, char*);
539 extern	char*	p9netmkaddr(char*, char*, char*);
540 extern	int	p9reject(int, char*, char*);
541 
542 #ifndef NOPLAN9DEFINES
543 #define	accept		p9accept
544 #define	announce	p9announce
545 #define	dial		p9dial
546 #define	setnetmtpt	p9setnetmtpt
547 #define	listen		p9listen
548 #define	netmkaddr	p9netmkaddr
549 #define	reject		p9reject
550 #endif
551 
552 /*
553  *  encryption
554  */
555 extern	int	pushssl(int, char*, char*, char*, int*);
556 extern	int	pushtls(int, char*, char*, int, char*, char*);
557 
558 /*
559  *  network services
560  */
561 typedef struct NetConnInfo NetConnInfo;
562 struct NetConnInfo
563 {
564 	char	*dir;		/* connection directory */
565 	char	*root;		/* network root */
566 	char	*spec;		/* binding spec */
567 	char	*lsys;		/* local system */
568 	char	*lserv;		/* local service */
569 	char	*rsys;		/* remote system */
570 	char	*rserv;		/* remote service */
571 	char *laddr;
572 	char *raddr;
573 };
574 extern	NetConnInfo*	getnetconninfo(char*, int);
575 extern	void		freenetconninfo(NetConnInfo*);
576 
577 /*
578  * system calls
579  *
580  */
581 #define	STATMAX	65535U	/* max length of machine-independent stat structure */
582 #define	DIRMAX	(sizeof(Dir)+STATMAX)	/* max length of Dir structure */
583 #define	ERRMAX	128	/* max length of error string */
584 
585 #define	MORDER	0x0003	/* mask for bits defining order of mounting */
586 #define	MREPL	0x0000	/* mount replaces object */
587 #define	MBEFORE	0x0001	/* mount goes before others in union directory */
588 #define	MAFTER	0x0002	/* mount goes after others in union directory */
589 #define	MCREATE	0x0004	/* permit creation in mounted directory */
590 #define	MCACHE	0x0010	/* cache some data */
591 #define	MMASK	0x0017	/* all bits on */
592 
593 #define	OREAD	0	/* open for read */
594 #define	OWRITE	1	/* write */
595 #define	ORDWR	2	/* read and write */
596 #define	OEXEC	3	/* execute, == read but check execute permission */
597 #define	OTRUNC	16	/* or'ed in (except for exec), truncate file first */
598 #define	OCEXEC	32	/* or'ed in, close on exec */
599 #define	ORCLOSE	64	/* or'ed in, remove on close */
600 #define	ODIRECT	128	/* or'ed in, direct access */
601 #define	ONONBLOCK 256	/* or'ed in, non-blocking call */
602 #define	OEXCL	0x1000	/* or'ed in, exclusive use (create only) */
603 #define	OLOCK	0x2000	/* or'ed in, lock after opening */
604 #define	OAPPEND	0x4000	/* or'ed in, append only */
605 
606 #define	AEXIST	0	/* accessible: exists */
607 #define	AEXEC	1	/* execute access */
608 #define	AWRITE	2	/* write access */
609 #define	AREAD	4	/* read access */
610 
611 /* Segattch */
612 #define	SG_RONLY	0040	/* read only */
613 #define	SG_CEXEC	0100	/* detach on exec */
614 
615 #define	NCONT	0	/* continue after note */
616 #define	NDFLT	1	/* terminate after note */
617 #define	NSAVE	2	/* clear note but hold state */
618 #define	NRSTR	3	/* restore saved state */
619 
620 /* bits in Qid.type */
621 #define QTDIR		0x80		/* type bit for directories */
622 #define QTAPPEND	0x40		/* type bit for append only files */
623 #define QTEXCL		0x20		/* type bit for exclusive use files */
624 #define QTMOUNT		0x10		/* type bit for mounted channel */
625 #define QTAUTH		0x08		/* type bit for authentication file */
626 #define QTTMP		0x04		/* type bit for non-backed-up file */
627 #define QTSYMLINK	0x02		/* type bit for symbolic link */
628 #define QTFILE		0x00		/* type bits for plain file */
629 
630 /* bits in Dir.mode */
631 #define DMDIR		0x80000000	/* mode bit for directories */
632 #define DMAPPEND	0x40000000	/* mode bit for append only files */
633 #define DMEXCL		0x20000000	/* mode bit for exclusive use files */
634 #define DMMOUNT		0x10000000	/* mode bit for mounted channel */
635 #define DMAUTH		0x08000000	/* mode bit for authentication file */
636 #define DMTMP		0x04000000	/* mode bit for non-backed-up file */
637 #define DMSYMLINK	0x02000000	/* mode bit for symbolic link (Unix, 9P2000.u) */
638 #define DMDEVICE	0x00800000	/* mode bit for device file (Unix, 9P2000.u) */
639 #define DMNAMEDPIPE	0x00200000	/* mode bit for named pipe (Unix, 9P2000.u) */
640 #define DMSOCKET	0x00100000	/* mode bit for socket (Unix, 9P2000.u) */
641 
642 #define DMREAD		0x4		/* mode bit for read permission */
643 #define DMWRITE		0x2		/* mode bit for write permission */
644 #define DMEXEC		0x1		/* mode bit for execute permission */
645 
646 #ifdef RFMEM	/* FreeBSD, OpenBSD */
647 #undef RFFDG
648 #undef RFNOTEG
649 #undef RFPROC
650 #undef RFMEM
651 #undef RFNOWAIT
652 #undef RFCFDG
653 #undef RFNAMEG
654 #undef RFENVG
655 #undef RFCENVG
656 #undef RFCFDG
657 #undef RFCNAMEG
658 #endif
659 
660 enum
661 {
662 	RFNAMEG		= (1<<0), 
663 	RFENVG		= (1<<1), 
664 	RFFDG		= (1<<2),
665 	RFNOTEG		= (1<<3),
666 	RFPROC		= (1<<4),
667 	RFMEM		= (1<<5),
668 	RFNOWAIT	= (1<<6),
669 	RFCNAMEG	= (1<<10), 
670 	RFCENVG		= (1<<11), 
671 	RFCFDG		= (1<<12),
672 /*	RFREND		= (1<<13), */
673 /*	RFNOMNT		= (1<<14) */
674 };
675 
676 typedef
677 struct Qid
678 {
679 	uvlong	path;
680 	ulong	vers;
681 	uchar	type;
682 } Qid;
683 
684 typedef
685 struct Dir {
686 	/* system-modified data */
687 	ushort	type;	/* server type */
688 	uint	dev;	/* server subtype */
689 	/* file data */
690 	Qid	qid;	/* unique id from server */
691 	ulong	mode;	/* permissions */
692 	ulong	atime;	/* last read time */
693 	ulong	mtime;	/* last write time */
694 	vlong	length;	/* file length */
695 	char	*name;	/* last element of path */
696 	char	*uid;	/* owner name */
697 	char	*gid;	/* group name */
698 	char	*muid;	/* last modifier name */
699 	
700 	/* 9P2000.u extensions */
701 	uint	uidnum;		/* numeric uid */
702 	uint	gidnum;		/* numeric gid */
703 	uint	muidnum;	/* numeric muid */
704 	char	*ext;		/* extended info */
705 } Dir;
706 
707 /* keep /sys/src/ape/lib/ap/plan9/sys9.h in sync with this -rsc */
708 typedef
709 struct Waitmsg
710 {
711 	int pid;	/* of loved one */
712 	ulong time[3];	/* of loved one & descendants */
713 	char	*msg;
714 } Waitmsg;
715 
716 typedef
717 struct IOchunk
718 {
719 	void	*addr;
720 	ulong	len;
721 } IOchunk;
722 
723 extern	void	_exits(char*);
724 
725 extern	void	abort(void);
726 /* extern	int	access(char*, int); */
727 extern	long	p9alarm(ulong);
728 extern	int	await(char*, int);
729 extern	int	awaitfor(int, char*, int);
730 extern	int	awaitnohang(char*, int);
731 /* extern	int	bind(char*, char*, int); give up */
732 /* extern	int	brk(void*); <unistd.h> */
733 extern	int	p9chdir(char*);
734 extern	int	close(int);
735 extern	int	p9create(char*, int, ulong);
736 extern	int	p9dup(int, int);
737 extern	int	errstr(char*, uint);
738 extern	int	p9exec(char*, char*[]);
739 extern	int	p9execl(char*, ...);
740 /* extern	int	p9fork(void); */
741 extern	int	p9rfork(int);
742 /* not implemented 
743 extern	int	fauth(int, char*);
744 extern	int	fstat(int, uchar*, int);
745 extern	int	fwstat(int, uchar*, int);
746 extern	int	fversion(int, int, char*, int);
747 extern	int	mount(int, int, char*, int, char*);
748 extern	int	unmount(char*, char*);
749 */
750 extern	int	noted(int);
751 extern	int	notify(void(*)(void*, char*));
752 extern	int	noteenable(char*);
753 extern	int	notedisable(char*);
754 extern	int	notifyon(char*);
755 extern	int	notifyoff(char*);
756 extern	int	p9open(char*, int);
757 extern	int	fd2path(int, char*, int);
758 extern	int	p9pipe(int*);
759 /* 
760  * use defs from <unistd.h>
761 extern	long	pread(int, void*, long, vlong);
762 extern	long	preadv(int, IOchunk*, int, vlong);
763 extern	long	pwrite(int, void*, long, vlong);
764 extern	long	pwritev(int, IOchunk*, int, vlong);
765 extern	long	read(int, void*, long);
766  */
767 extern	long	readn(int, void*, long);
768 /* extern	long	readv(int, IOchunk*, int); <unistd.h> */
769 extern	int	remove(const char*);
770 /* extern	void*	sbrk(ulong); <unistd.h> */
771 /* extern	long	oseek(int, long, int); */
772 extern	vlong	p9seek(int, vlong, int);
773 /* give up
774 extern	long	segattach(int, char*, void*, ulong);
775 extern	int	segbrk(void*, void*);
776 extern	int	segdetach(void*);
777 extern	int	segflush(void*, ulong);
778 extern	int	segfree(void*, ulong);
779 */
780 extern	int	p9sleep(long);
781 /* extern	int	stat(char*, uchar*, int); give up */
782 extern	Waitmsg*	p9wait(void);
783 extern	Waitmsg*	p9waitfor(int);
784 extern	Waitmsg*	waitnohang(void);
785 extern	int	p9waitpid(void);
786 /* <unistd.h>
787 extern	long	write(int, void*, long);
788 extern	long	writev(int, IOchunk*, int);
789 */
790 /* extern	int	wstat(char*, uchar*, int); give up */
791 extern	ulong	rendezvous(ulong, ulong);
792 
793 #ifndef NOPLAN9DEFINES
794 #define alarm		p9alarm
795 #define	dup		p9dup
796 #define	exec		p9exec
797 #define	execl	p9execl
798 #define	seek		p9seek
799 #define sleep		p9sleep
800 #define wait		p9wait
801 #define waitpid		p9waitpid
802 /* #define fork		p9fork */
803 #define rfork		p9rfork
804 /* #define access		p9access */
805 #define create		p9create
806 #undef open
807 #define open		p9open
808 #define pipe		p9pipe
809 #define	waitfor		p9waitfor
810 #endif
811 
812 extern	Dir*	dirstat(char*);
813 extern	Dir*	dirfstat(int);
814 extern	int	dirwstat(char*, Dir*);
815 extern	int	dirfwstat(int, Dir*);
816 extern	long	dirread(int, Dir**);
817 extern	void	nulldir(Dir*);
818 extern	long	dirreadall(int, Dir**);
819 /* extern	int	getpid(void); <unistd.h> */
820 /* extern	int	getppid(void); */
821 extern	void	rerrstr(char*, uint);
822 extern	char*	sysname(void);
823 extern	void	werrstr(char*, ...);
824 extern	char*	getns(void);
825 extern	char*	get9root(void);
826 extern	char*	unsharp(char*);
827 extern	int	sendfd(int, int);
828 extern	int	recvfd(int);
829 extern	int	post9pservice(int, char*);
830 
831 /* external names that we don't want to step on */
832 #ifndef NOPLAN9DEFINES
833 #define main	p9main
834 #endif
835 
836 #ifdef VARARGCK
837 #pragma	varargck	type	"lld"	vlong
838 #pragma	varargck	type	"llx"	vlong
839 #pragma	varargck	type	"lld"	uvlong
840 #pragma	varargck	type	"llx"	uvlong
841 #pragma	varargck	type	"ld"	long
842 #pragma	varargck	type	"lx"	long
843 #pragma	varargck	type	"ld"	ulong
844 #pragma	varargck	type	"lx"	ulong
845 #pragma	varargck	type	"d"	int
846 #pragma	varargck	type	"x"	int
847 #pragma	varargck	type	"c"	int
848 #pragma	varargck	type	"C"	int
849 #pragma	varargck	type	"d"	uint
850 #pragma	varargck	type	"x"	uint
851 #pragma	varargck	type	"c"	uint
852 #pragma	varargck	type	"C"	uint
853 #pragma	varargck	type	"f"	double
854 #pragma	varargck	type	"e"	double
855 #pragma	varargck	type	"g"	double
856 #pragma	varargck	type	"lf"	long double
857 #pragma	varargck	type	"le"	long double
858 #pragma	varargck	type	"lg"	long double
859 #pragma	varargck	type	"s"	char*
860 #pragma	varargck	type	"q"	char*
861 #pragma	varargck	type	"S"	Rune*
862 #pragma	varargck	type	"Q"	Rune*
863 #pragma	varargck	type	"r"	void
864 #pragma	varargck	type	"%"	void
865 #pragma	varargck	type	"n"	int*
866 #pragma	varargck	type	"p"	void*
867 #pragma	varargck	type	"<"	void*
868 #pragma	varargck	type	"["	void*
869 #pragma	varargck	type	"H"	void*
870 #pragma	varargck	type	"lH"	void*
871 
872 #pragma	varargck	flag	' '
873 #pragma	varargck	flag	'#'
874 #pragma	varargck	flag	'+'
875 #pragma	varargck	flag	','
876 #pragma	varargck	flag	'-'
877 #pragma	varargck	flag	'u'
878 
879 #pragma	varargck	argpos	fmtprint	2
880 #pragma	varargck	argpos	fprint	2
881 #pragma	varargck	argpos	print	1
882 #pragma	varargck	argpos	runeseprint	3
883 #pragma	varargck	argpos	runesmprint	1
884 #pragma	varargck	argpos	runesnprint	3
885 #pragma	varargck	argpos	runesprint	2
886 #pragma	varargck	argpos	seprint	3
887 #pragma	varargck	argpos	smprint	1
888 #pragma	varargck	argpos	snprint	3
889 #pragma	varargck	argpos	sprint	2
890 #pragma	varargck	argpos	sysfatal	1
891 #pragma	varargck	argpos	p9syslog	3
892 #pragma	varargck	argpos	werrstr	1
893 #endif
894 
895 /* compiler directives on plan 9 */
896 #define	SET(x)	((x)=0)
897 #define	USED(x)	if(x){}else{}
898 #ifdef __GNUC__
899 #	if __GNUC__ >= 3
900 #		undef USED
901 #		define USED(x) { ulong __y __attribute__ ((unused)); __y = (ulong)(x); }
902 #	endif
903 #endif
904 
905 /* this really shouldn't be here */
906 #if defined(__OpenBSD__) || (defined(__NetBSD__) && !defined(sched_yield))
907 #define sched_yield() \
908 	do { \
909 		struct timespec ts; \
910 		ts.tv_sec = 0; \
911 		ts.tv_nsec = 10; \
912 		nanosleep(&ts, NULL); \
913 	} while(0)
914 #endif
915 
916 /* command line */
917 extern char	*argv0;
918 extern void __fixargv0(void);
919 #define	ARGBEGIN	for((argv0?0:(argv0=(__fixargv0(),*argv))),argv++,argc--;\
920 			    argv[0] && argv[0][0]=='-' && argv[0][1];\
921 			    argc--, argv++) {\
922 				char *_args, *_argt;\
923 				Rune _argc;\
924 				_args = &argv[0][1];\
925 				if(_args[0]=='-' && _args[1]==0){\
926 					argc--; argv++; break;\
927 				}\
928 				_argc = 0;\
929 				while(*_args && (_args += chartorune(&_argc, _args)))\
930 				switch(_argc)
931 #define	ARGEND		SET(_argt);USED(_argt);USED(_argc);USED(_args);}USED(argv);USED(argc);
932 #define	ARGF()		(_argt=_args, _args="",\
933 				(*_argt? _argt: argv[1]? (argc--, *++argv): 0))
934 #define	EARGF(x)	(_argt=_args, _args="",\
935 				(*_argt? _argt: argv[1]? (argc--, *++argv): ((x), abort(), (char*)0)))
936 
937 #define	ARGC()		_argc
938 
939 #if defined(__cplusplus)
940 }
941 #endif
942 #endif	/* _LIB9_H_ */