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	int	exitcode(char*);
380 extern	void	exits(char*);
381 extern	double	frexp(double, int*);
382 extern	ulong	getcallerpc(void*);
383 extern	char*	p9getenv(char*);
384 extern	int	p9putenv(char*, char*);
385 extern	int	getfields(char*, char**, int, int, char*);
386 extern	int	gettokens(char *, char **, int, char *);
387 extern	char*	getuser(void);
388 extern	char*	p9getwd(char*, int);
389 extern	int	iounit(int);
390 /* extern	long	labs(long); <math.h> */
391 /* extern	double	ldexp(double, int); <math.h> */
392 extern	void	p9longjmp(p9jmp_buf, int);
393 extern	char*	mktemp(char*);
394 extern	int		opentemp(char*);
395 /* extern	double	modf(double, double*); <math.h> */
396 extern	void	p9notejmp(void*, p9jmp_buf, int);
397 extern	void	perror(const char*);
398 extern	int	postnote(int, int, char *);
399 extern	double	p9pow10(int);
400 /* extern	int	putenv(char*, char*); <stdlib.h. */
401 /* extern	void	qsort(void*, long, long, int (*)(void*, void*)); <stdlib.h> */
402 extern	char*	searchpath(char*);
403 /* extern	int	p9setjmp(p9jmp_buf); */
404 #define p9setjmp(b)	sigsetjmp((void*)(b), 1)
405 /*
406  * <stdlib.h>
407 extern	long	strtol(char*, char**, int);
408 extern	ulong	strtoul(char*, char**, int);
409 extern	vlong	strtoll(char*, char**, int);
410 extern	uvlong	strtoull(char*, char**, int);
411  */
412 extern	void	sysfatal(char*, ...);
413 extern	void	p9syslog(int, char*, char*, ...);
414 extern	long	p9time(long*);
415 /* extern	int	tolower(int); <ctype.h> */
416 /* extern	int	toupper(int); <ctype.h> */
417 extern	void	needstack(int);
418 extern	char*	readcons(char*, char*, int);
419 
420 extern	void	(*_pin)(void);
421 extern	void	(*_unpin)(void);
422 
423 #ifndef NOPLAN9DEFINES
424 #define atexit		p9atexit
425 #define atexitdont	p9atexitdont
426 #define atoi		p9atoi
427 #define atol		p9atol
428 #define atoll		p9atoll
429 #define encrypt		p9encrypt
430 #define decrypt		p9decrypt
431 #define getenv		p9getenv
432 #define	getwd		p9getwd
433 #define	longjmp		p9longjmp
434 #undef  setjmp
435 #define setjmp		p9setjmp
436 #define putenv		p9putenv
437 #define notejmp		p9notejmp
438 #define jmp_buf		p9jmp_buf
439 #define time		p9time
440 #define pow10		p9pow10
441 #define strtod		fmtstrtod
442 #define charstod	fmtcharstod
443 #define syslog		p9syslog
444 #endif
445 
446 /*
447  *  just enough information so that libc can be
448  *  properly locked without dragging in all of libthread
449  */
450 typedef struct _Thread _Thread;
451 typedef struct _Threadlist _Threadlist;
452 struct _Threadlist
453 {
454 	_Thread	*head;
455 	_Thread	*tail;
456 };
457 
458 extern	_Thread	*(*threadnow)(void);
459 
460 /*
461  *  synchronization
462  */
463 typedef struct Lock Lock;
464 struct Lock
465 {
466 #ifdef PLAN9PORT_USING_PTHREADS
467 	int init;
468 	pthread_mutex_t mutex;
469 #endif
470 	int held;
471 };
472 
473 extern	void	lock(Lock*);
474 extern	void	unlock(Lock*);
475 extern	int	canlock(Lock*);
476 extern	int	(*_lock)(Lock*, int, ulong);
477 extern	void	(*_unlock)(Lock*, ulong);	
478 
479 typedef struct QLock QLock;
480 struct QLock
481 {
482 	Lock		l;
483 	_Thread	*owner;
484 	_Threadlist	waiting;
485 };
486 
487 extern	void	qlock(QLock*);
488 extern	void	qunlock(QLock*);
489 extern	int	canqlock(QLock*);
490 extern	int	(*_qlock)(QLock*, int, ulong);	/* do not use */
491 extern	void	(*_qunlock)(QLock*, ulong);
492 
493 typedef struct Rendez Rendez;
494 struct Rendez
495 {
496 	QLock	*l;
497 	_Threadlist	waiting;
498 };
499 
500 extern	void	rsleep(Rendez*);	/* unlocks r->l, sleeps, locks r->l again */
501 extern	int	rwakeup(Rendez*);
502 extern	int	rwakeupall(Rendez*);
503 extern	void	(*_rsleep)(Rendez*, ulong);	/* do not use */
504 extern	int	(*_rwakeup)(Rendez*, int, ulong);
505 
506 typedef struct RWLock RWLock;
507 struct RWLock
508 {
509 	Lock		l;
510 	int	readers;
511 	_Thread	*writer;
512 	_Threadlist	rwaiting;
513 	_Threadlist	wwaiting;
514 };
515 
516 extern	void	rlock(RWLock*);
517 extern	void	runlock(RWLock*);
518 extern	int		canrlock(RWLock*);
519 extern	void	wlock(RWLock*);
520 extern	void	wunlock(RWLock*);
521 extern	int		canwlock(RWLock*);
522 extern	int	(*_rlock)(RWLock*, int, ulong);	/* do not use */
523 extern	int	(*_wlock)(RWLock*, int, ulong);
524 extern	void	(*_runlock)(RWLock*, ulong);
525 extern	void	(*_wunlock)(RWLock*, ulong);
526 
527 /*
528  * per-process private data
529  */
530 extern	void**	privalloc(void);
531 extern	void	privfree(void**);
532 
533 /*
534  *  network dialing
535  */
536 #define NETPATHLEN 40
537 extern	int	p9accept(int, char*);
538 extern	int	p9announce(char*, char*);
539 extern	int	p9dial(char*, char*, char*, int*);
540 extern	int	p9dialparse(char *ds, char **net, char **unixa, u32int *ip, int *port);
541 extern	void	p9setnetmtpt(char*, int, char*);
542 extern	int	p9listen(char*, char*);
543 extern	char*	p9netmkaddr(char*, char*, char*);
544 extern	int	p9reject(int, char*, char*);
545 
546 #ifndef NOPLAN9DEFINES
547 #define	accept		p9accept
548 #define	announce	p9announce
549 #define	dial		p9dial
550 #define	setnetmtpt	p9setnetmtpt
551 #define	listen		p9listen
552 #define	netmkaddr	p9netmkaddr
553 #define	reject		p9reject
554 #endif
555 
556 /*
557  *  encryption
558  */
559 extern	int	pushssl(int, char*, char*, char*, int*);
560 extern	int	pushtls(int, char*, char*, int, char*, char*);
561 
562 /*
563  *  network services
564  */
565 typedef struct NetConnInfo NetConnInfo;
566 struct NetConnInfo
567 {
568 	char	*dir;		/* connection directory */
569 	char	*root;		/* network root */
570 	char	*spec;		/* binding spec */
571 	char	*lsys;		/* local system */
572 	char	*lserv;		/* local service */
573 	char	*rsys;		/* remote system */
574 	char	*rserv;		/* remote service */
575 	char *laddr;
576 	char *raddr;
577 };
578 extern	NetConnInfo*	getnetconninfo(char*, int);
579 extern	void		freenetconninfo(NetConnInfo*);
580 
581 /*
582  * system calls
583  *
584  */
585 #define	STATMAX	65535U	/* max length of machine-independent stat structure */
586 #define	DIRMAX	(sizeof(Dir)+STATMAX)	/* max length of Dir structure */
587 #define	ERRMAX	128	/* max length of error string */
588 
589 #define	MORDER	0x0003	/* mask for bits defining order of mounting */
590 #define	MREPL	0x0000	/* mount replaces object */
591 #define	MBEFORE	0x0001	/* mount goes before others in union directory */
592 #define	MAFTER	0x0002	/* mount goes after others in union directory */
593 #define	MCREATE	0x0004	/* permit creation in mounted directory */
594 #define	MCACHE	0x0010	/* cache some data */
595 #define	MMASK	0x0017	/* all bits on */
596 
597 #define	OREAD	0	/* open for read */
598 #define	OWRITE	1	/* write */
599 #define	ORDWR	2	/* read and write */
600 #define	OEXEC	3	/* execute, == read but check execute permission */
601 #define	OTRUNC	16	/* or'ed in (except for exec), truncate file first */
602 #define	OCEXEC	32	/* or'ed in, close on exec */
603 #define	ORCLOSE	64	/* or'ed in, remove on close */
604 #define	ODIRECT	128	/* or'ed in, direct access */
605 #define	ONONBLOCK 256	/* or'ed in, non-blocking call */
606 #define	OEXCL	0x1000	/* or'ed in, exclusive use (create only) */
607 #define	OLOCK	0x2000	/* or'ed in, lock after opening */
608 #define	OAPPEND	0x4000	/* or'ed in, append only */
609 
610 #define	AEXIST	0	/* accessible: exists */
611 #define	AEXEC	1	/* execute access */
612 #define	AWRITE	2	/* write access */
613 #define	AREAD	4	/* read access */
614 
615 /* Segattch */
616 #define	SG_RONLY	0040	/* read only */
617 #define	SG_CEXEC	0100	/* detach on exec */
618 
619 #define	NCONT	0	/* continue after note */
620 #define	NDFLT	1	/* terminate after note */
621 #define	NSAVE	2	/* clear note but hold state */
622 #define	NRSTR	3	/* restore saved state */
623 
624 /* bits in Qid.type */
625 #define QTDIR		0x80		/* type bit for directories */
626 #define QTAPPEND	0x40		/* type bit for append only files */
627 #define QTEXCL		0x20		/* type bit for exclusive use files */
628 #define QTMOUNT		0x10		/* type bit for mounted channel */
629 #define QTAUTH		0x08		/* type bit for authentication file */
630 #define QTTMP		0x04		/* type bit for non-backed-up file */
631 #define QTSYMLINK	0x02		/* type bit for symbolic link */
632 #define QTFILE		0x00		/* type bits for plain file */
633 
634 /* bits in Dir.mode */
635 #define DMDIR		0x80000000	/* mode bit for directories */
636 #define DMAPPEND	0x40000000	/* mode bit for append only files */
637 #define DMEXCL		0x20000000	/* mode bit for exclusive use files */
638 #define DMMOUNT		0x10000000	/* mode bit for mounted channel */
639 #define DMAUTH		0x08000000	/* mode bit for authentication file */
640 #define DMTMP		0x04000000	/* mode bit for non-backed-up file */
641 #define DMSYMLINK	0x02000000	/* mode bit for symbolic link (Unix, 9P2000.u) */
642 #define DMDEVICE	0x00800000	/* mode bit for device file (Unix, 9P2000.u) */
643 #define DMNAMEDPIPE	0x00200000	/* mode bit for named pipe (Unix, 9P2000.u) */
644 #define DMSOCKET	0x00100000	/* mode bit for socket (Unix, 9P2000.u) */
645 #define DMSETUID	0x00080000	/* mode bit for setuid (Unix, 9P2000.u) */
646 #define DMSETGID	0x00040000	/* mode bit for setgid (Unix, 9P2000.u) */
647 
648 #define DMREAD		0x4		/* mode bit for read permission */
649 #define DMWRITE		0x2		/* mode bit for write permission */
650 #define DMEXEC		0x1		/* mode bit for execute permission */
651 
652 #ifdef RFMEM	/* FreeBSD, OpenBSD */
653 #undef RFFDG
654 #undef RFNOTEG
655 #undef RFPROC
656 #undef RFMEM
657 #undef RFNOWAIT
658 #undef RFCFDG
659 #undef RFNAMEG
660 #undef RFENVG
661 #undef RFCENVG
662 #undef RFCFDG
663 #undef RFCNAMEG
664 #endif
665 
666 enum
667 {
668 	RFNAMEG		= (1<<0), 
669 	RFENVG		= (1<<1), 
670 	RFFDG		= (1<<2),
671 	RFNOTEG		= (1<<3),
672 	RFPROC		= (1<<4),
673 	RFMEM		= (1<<5),
674 	RFNOWAIT	= (1<<6),
675 	RFCNAMEG	= (1<<10), 
676 	RFCENVG		= (1<<11), 
677 	RFCFDG		= (1<<12)
678 /*	RFREND		= (1<<13), */
679 /*	RFNOMNT		= (1<<14) */
680 };
681 
682 typedef
683 struct Qid
684 {
685 	uvlong	path;
686 	ulong	vers;
687 	uchar	type;
688 } Qid;
689 
690 typedef
691 struct Dir {
692 	/* system-modified data */
693 	ushort	type;	/* server type */
694 	uint	dev;	/* server subtype */
695 	/* file data */
696 	Qid	qid;	/* unique id from server */
697 	ulong	mode;	/* permissions */
698 	ulong	atime;	/* last read time */
699 	ulong	mtime;	/* last write time */
700 	vlong	length;	/* file length */
701 	char	*name;	/* last element of path */
702 	char	*uid;	/* owner name */
703 	char	*gid;	/* group name */
704 	char	*muid;	/* last modifier name */
705 	
706 	/* 9P2000.u extensions */
707 	uint	uidnum;		/* numeric uid */
708 	uint	gidnum;		/* numeric gid */
709 	uint	muidnum;	/* numeric muid */
710 	char	*ext;		/* extended info */
711 } Dir;
712 
713 /* keep /sys/src/ape/lib/ap/plan9/sys9.h in sync with this -rsc */
714 typedef
715 struct Waitmsg
716 {
717 	int pid;	/* of loved one */
718 	ulong time[3];	/* of loved one & descendants */
719 	char	*msg;
720 } Waitmsg;
721 
722 typedef
723 struct IOchunk
724 {
725 	void	*addr;
726 	ulong	len;
727 } IOchunk;
728 
729 extern	void	_exits(char*);
730 
731 extern	void	abort(void);
732 /* extern	int	access(char*, int); */
733 extern	long	p9alarm(ulong);
734 extern	int	await(char*, int);
735 extern	int	awaitfor(int, char*, int);
736 extern	int	awaitnohang(char*, int);
737 /* extern	int	bind(char*, char*, int); give up */
738 /* extern	int	brk(void*); <unistd.h> */
739 extern	int	p9chdir(char*);
740 extern	int	close(int);
741 extern	int	p9create(char*, int, ulong);
742 extern	int	p9dup(int, int);
743 extern	int	errstr(char*, uint);
744 extern	int	p9exec(char*, char*[]);
745 extern	int	p9execl(char*, ...);
746 /* extern	int	p9fork(void); */
747 extern	int	p9rfork(int);
748 /* not implemented 
749 extern	int	fauth(int, char*);
750 extern	int	fstat(int, uchar*, int);
751 extern	int	fwstat(int, uchar*, int);
752 extern	int	fversion(int, int, char*, int);
753 extern	int	mount(int, int, char*, int, char*);
754 extern	int	unmount(char*, char*);
755 */
756 extern	int	noted(int);
757 extern	int	notify(void(*)(void*, char*));
758 extern	int	noteenable(char*);
759 extern	int	notedisable(char*);
760 extern	int	notifyon(char*);
761 extern	int	notifyoff(char*);
762 extern	int	p9open(char*, int);
763 extern	int	fd2path(int, char*, int);
764 extern	int	p9pipe(int*);
765 /* 
766  * use defs from <unistd.h>
767 extern	long	pread(int, void*, long, vlong);
768 extern	long	preadv(int, IOchunk*, int, vlong);
769 extern	long	pwrite(int, void*, long, vlong);
770 extern	long	pwritev(int, IOchunk*, int, vlong);
771 extern	long	read(int, void*, long);
772  */
773 extern	long	readn(int, void*, long);
774 /* extern	long	readv(int, IOchunk*, int); <unistd.h> */
775 extern	int	remove(const char*);
776 /* extern	void*	sbrk(ulong); <unistd.h> */
777 /* extern	long	oseek(int, long, int); */
778 extern	vlong	p9seek(int, vlong, int);
779 /* give up
780 extern	long	segattach(int, char*, void*, ulong);
781 extern	int	segbrk(void*, void*);
782 extern	int	segdetach(void*);
783 extern	int	segflush(void*, ulong);
784 extern	int	segfree(void*, ulong);
785 */
786 extern	int	p9sleep(long);
787 /* extern	int	stat(char*, uchar*, int); give up */
788 extern	Waitmsg*	p9wait(void);
789 extern	Waitmsg*	p9waitfor(int);
790 extern	Waitmsg*	waitnohang(void);
791 extern	int	p9waitpid(void);
792 /* <unistd.h>
793 extern	long	write(int, void*, long);
794 extern	long	writev(int, IOchunk*, int);
795 */
796 /* extern	int	wstat(char*, uchar*, int); give up */
797 extern	ulong	rendezvous(ulong, ulong);
798 
799 #ifndef NOPLAN9DEFINES
800 #define alarm		p9alarm
801 #define	dup		p9dup
802 #define	exec		p9exec
803 #define	execl	p9execl
804 #define	seek		p9seek
805 #define sleep		p9sleep
806 #define wait		p9wait
807 #define waitpid		p9waitpid
808 /* #define fork		p9fork */
809 #define rfork		p9rfork
810 /* #define access		p9access */
811 #define create		p9create
812 #undef open
813 #define open		p9open
814 #define pipe		p9pipe
815 #define	waitfor		p9waitfor
816 #endif
817 
818 extern	Dir*	dirstat(char*);
819 extern	Dir*	dirfstat(int);
820 extern	int	dirwstat(char*, Dir*);
821 extern	int	dirfwstat(int, Dir*);
822 extern	long	dirread(int, Dir**);
823 extern	void	nulldir(Dir*);
824 extern	long	dirreadall(int, Dir**);
825 /* extern	int	getpid(void); <unistd.h> */
826 /* extern	int	getppid(void); */
827 extern	void	rerrstr(char*, uint);
828 extern	char*	sysname(void);
829 extern	void	werrstr(char*, ...);
830 extern	char*	getns(void);
831 extern	char*	get9root(void);
832 extern	char*	unsharp(char*);
833 extern	int	sendfd(int, int);
834 extern	int	recvfd(int);
835 extern	int	post9pservice(int, char*);
836 
837 /* external names that we don't want to step on */
838 #ifndef NOPLAN9DEFINES
839 #define main	p9main
840 #endif
841 
842 #ifdef VARARGCK
843 #pragma	varargck	type	"lld"	vlong
844 #pragma	varargck	type	"llx"	vlong
845 #pragma	varargck	type	"lld"	uvlong
846 #pragma	varargck	type	"llx"	uvlong
847 #pragma	varargck	type	"ld"	long
848 #pragma	varargck	type	"lx"	long
849 #pragma	varargck	type	"ld"	ulong
850 #pragma	varargck	type	"lx"	ulong
851 #pragma	varargck	type	"d"	int
852 #pragma	varargck	type	"x"	int
853 #pragma	varargck	type	"c"	int
854 #pragma	varargck	type	"C"	int
855 #pragma	varargck	type	"d"	uint
856 #pragma	varargck	type	"x"	uint
857 #pragma	varargck	type	"c"	uint
858 #pragma	varargck	type	"C"	uint
859 #pragma	varargck	type	"f"	double
860 #pragma	varargck	type	"e"	double
861 #pragma	varargck	type	"g"	double
862 #pragma	varargck	type	"lf"	long double
863 #pragma	varargck	type	"le"	long double
864 #pragma	varargck	type	"lg"	long double
865 #pragma	varargck	type	"s"	char*
866 #pragma	varargck	type	"q"	char*
867 #pragma	varargck	type	"S"	Rune*
868 #pragma	varargck	type	"Q"	Rune*
869 #pragma	varargck	type	"r"	void
870 #pragma	varargck	type	"%"	void
871 #pragma	varargck	type	"n"	int*
872 #pragma	varargck	type	"p"	void*
873 #pragma	varargck	type	"<"	void*
874 #pragma	varargck	type	"["	void*
875 #pragma	varargck	type	"H"	void*
876 #pragma	varargck	type	"lH"	void*
877 
878 #pragma	varargck	flag	' '
879 #pragma	varargck	flag	'#'
880 #pragma	varargck	flag	'+'
881 #pragma	varargck	flag	','
882 #pragma	varargck	flag	'-'
883 #pragma	varargck	flag	'u'
884 
885 #pragma	varargck	argpos	fmtprint	2
886 #pragma	varargck	argpos	fprint	2
887 #pragma	varargck	argpos	print	1
888 #pragma	varargck	argpos	runeseprint	3
889 #pragma	varargck	argpos	runesmprint	1
890 #pragma	varargck	argpos	runesnprint	3
891 #pragma	varargck	argpos	runesprint	2
892 #pragma	varargck	argpos	seprint	3
893 #pragma	varargck	argpos	smprint	1
894 #pragma	varargck	argpos	snprint	3
895 #pragma	varargck	argpos	sprint	2
896 #pragma	varargck	argpos	sysfatal	1
897 #pragma	varargck	argpos	p9syslog	3
898 #pragma	varargck	argpos	werrstr	1
899 #endif
900 
901 /* compiler directives on plan 9 */
902 #define	SET(x)	((x)=0)
903 #define	USED(x)	if(x){}else{}
904 #ifdef __GNUC__
905 #	if __GNUC__ >= 3
906 #		undef USED
907 #		define USED(x) ((void)(x))
908 #	endif
909 #endif
910 
911 /* command line */
912 extern char	*argv0;
913 extern void __fixargv0(void);
914 #define	ARGBEGIN	for((argv0?0:(argv0=(__fixargv0(),*argv))),argv++,argc--;\
915 			    argv[0] && argv[0][0]=='-' && argv[0][1];\
916 			    argc--, argv++) {\
917 				char *_args, *_argt;\
918 				Rune _argc;\
919 				_args = &argv[0][1];\
920 				if(_args[0]=='-' && _args[1]==0){\
921 					argc--; argv++; break;\
922 				}\
923 				_argc = 0;\
924 				while(*_args && (_args += chartorune(&_argc, _args)))\
925 				switch(_argc)
926 #define	ARGEND		SET(_argt);USED(_argt);USED(_argc);USED(_args);}USED(argv);USED(argc);
927 #define	ARGF()		(_argt=_args, _args="",\
928 				(*_argt? _argt: argv[1]? (argc--, *++argv): 0))
929 #define	EARGF(x)	(_argt=_args, _args="",\
930 				(*_argt? _argt: argv[1]? (argc--, *++argv): ((x), abort(), (char*)0)))
931 
932 #define	ARGC()		_argc
933 
934 #if defined(__cplusplus)
935 }
936 #endif
937 #endif	/* _LIB9_H_ */