1 // This file originated as Plan 9's /sys/include/libc.h.
2 // The plan9port-specific changes may be distributed
3 // using the license in ../src/lib9/LICENSE.
4 
5 /*
6  * Lib9 is miscellany from the Plan 9 C library that doesn't
7  * fit into libutf or into libfmt, but is still missing from traditional
8  * Unix C libraries.
9  */
10 #ifndef _LIBC_H_
11 #define _LIBC_H_ 1
12 #if defined(__cplusplus)
13 extern "C" {
14 #endif                                                                
15 
16 #include <utf.h>
17 #include <fmt.h>
18 
19 /*
20  * Begin usual libc.h 
21  */
22 
23 #ifndef nil
24 #define	nil	((void*)0)
25 #endif
26 #define	nelem(x)	(sizeof(x)/sizeof((x)[0]))
27 
28 #ifndef offsetof
29 #define offsetof(s, m)	(ulong)(&(((s*)0)->m))
30 #endif
31 
32 /*
33  * mem routines (provided by system <string.h>)
34  *
35 extern	void*	memccpy(void*, void*, int, ulong);
36 extern	void*	memset(void*, int, ulong);
37 extern	int	memcmp(void*, void*, ulong);
38 extern	void*	memcpy(void*, void*, ulong);
39 extern	void*	memmove(void*, void*, ulong);
40 extern	void*	memchr(void*, int, ulong);
41  */
42 
43 /*
44  * string routines (provided by system <string.h>)
45  *
46 extern	char*	strcat(char*, char*);
47 extern	char*	strchr(char*, int);
48 extern	int	strcmp(char*, char*);
49 extern	char*	strcpy(char*, char*);
50  */
51 extern	char*	strecpy(char*, char*, char*);
52 extern	char*	p9strdup(char*);
53 /*
54 extern	char*	strncat(char*, char*, long);
55 extern	char*	strncpy(char*, char*, long);
56 extern	int	strncmp(char*, char*, long);
57 extern	char*	strpbrk(char*, char*);
58 extern	char*	strrchr(char*, int);
59 extern	char*	strtok(char*, char*);
60 extern	long	strlen(char*);
61 extern	long	strspn(char*, char*);
62 extern	long	strcspn(char*, char*);
63 extern	char*	strstr(char*, char*);
64  */
65 extern	int	cistrncmp(char*, char*, int);
66 extern	int	cistrcmp(char*, char*);
67 extern	char*	cistrstr(char*, char*);
68 extern	int	tokenize(char*, char**, int);
69 
70 /*
71 enum
72 {
73 	UTFmax		= 4,
74 	Runesync	= 0x80,
75 	Runeself	= 0x80,
76 	Runeerror	= 0xFFFD,
77 	Runemax	= 0x10FFFF,
78 };
79 */
80 
81 /*
82  * rune routines (provided by <utf.h>
83  *
84 extern	int	runetochar(char*, Rune*);
85 extern	int	chartorune(Rune*, char*);
86 extern	int	runelen(long);
87 extern	int	runenlen(Rune*, int);
88 extern	int	fullrune(char*, int);
89 extern	int	utflen(char*);
90 extern	int	utfnlen(char*, long);
91 extern	char*	utfrune(char*, long);
92 extern	char*	utfrrune(char*, long);
93 extern	char*	utfutf(char*, char*);
94 extern	char*	utfecpy(char*, char*, char*);
95 
96 extern	Rune*	runestrcat(Rune*, Rune*);
97 extern	Rune*	runestrchr(Rune*, Rune);
98 extern	int	runestrcmp(Rune*, Rune*);
99 extern	Rune*	runestrcpy(Rune*, Rune*);
100 extern	Rune*	runestrncpy(Rune*, Rune*, long);
101 extern	Rune*	runestrecpy(Rune*, Rune*, Rune*);
102 extern	Rune*	runestrdup(Rune*);
103 extern	Rune*	runestrncat(Rune*, Rune*, long);
104 extern	int	runestrncmp(Rune*, Rune*, long);
105 extern	Rune*	runestrrchr(Rune*, Rune);
106 extern	long	runestrlen(Rune*);
107 extern	Rune*	runestrstr(Rune*, Rune*);
108 
109 extern	Rune	tolowerrune(Rune);
110 extern	Rune	totitlerune(Rune);
111 extern	Rune	toupperrune(Rune);
112 extern	int	isalpharune(Rune);
113 extern	int	islowerrune(Rune);
114 extern	int	isspacerune(Rune);
115 extern	int	istitlerune(Rune);
116 extern	int	isupperrune(Rune);
117  */
118 
119 /*
120  * malloc (provied by system <stdlib.h>)
121  *
122 extern	void*	malloc(ulong);
123  */
124 extern	void*	p9malloc(ulong);
125 extern	void*	mallocz(ulong, int);
126 extern	void	p9free(void*);
127 extern	void*	p9calloc(ulong, ulong);
128 extern	void*	p9realloc(void*, ulong);
129 extern	void		setmalloctag(void*, ulong);
130 extern	void		setrealloctag(void*, ulong);
131 extern	ulong	getmalloctag(void*);
132 extern	ulong	getrealloctag(void*);
133 /*
134 extern	void*	malloctopoolblock(void*);
135 */
136 #ifndef NOPLAN9DEFINES
137 #define	malloc	p9malloc
138 #define	realloc	p9realloc
139 #define	calloc	p9calloc
140 #define	free	p9free
141 #undef strdup
142 #define	strdup	p9strdup
143 #endif
144 
145 /*
146  * print routines (provided by <fmt.h>)
147  *
148 typedef struct Fmt	Fmt;
149 struct Fmt{
150 	uchar	runes;
151 	void	*start;
152 	void	*to;
153 	void	*stop;
154 	int	(*flush)(Fmt *);
155 	void	*farg;
156 	int	nfmt;
157 	va_list	args;
158 	int	r;
159 	int	width;
160 	int	prec;
161 	ulong	flags;
162 };
163 
164 enum{
165 	FmtWidth	= 1,
166 	FmtLeft		= FmtWidth << 1,
167 	FmtPrec		= FmtLeft << 1,
168 	FmtSharp	= FmtPrec << 1,
169 	FmtSpace	= FmtSharp << 1,
170 	FmtSign		= FmtSpace << 1,
171 	FmtZero		= FmtSign << 1,
172 	FmtUnsigned	= FmtZero << 1,
173 	FmtShort	= FmtUnsigned << 1,
174 	FmtLong		= FmtShort << 1,
175 	FmtVLong	= FmtLong << 1,
176 	FmtComma	= FmtVLong << 1,
177 	FmtByte	= FmtComma << 1,
178 
179 	FmtFlag		= FmtByte << 1
180 };
181 
182 extern	int	print(char*, ...);
183 extern	char*	seprint(char*, char*, char*, ...);
184 extern	char*	vseprint(char*, char*, char*, va_list);
185 extern	int	snprint(char*, int, char*, ...);
186 extern	int	vsnprint(char*, int, char*, va_list);
187 extern	char*	smprint(char*, ...);
188 extern	char*	vsmprint(char*, va_list);
189 extern	int	sprint(char*, char*, ...);
190 extern	int	fprint(int, char*, ...);
191 extern	int	vfprint(int, char*, va_list);
192 
193 extern	int	runesprint(Rune*, char*, ...);
194 extern	int	runesnprint(Rune*, int, char*, ...);
195 extern	int	runevsnprint(Rune*, int, char*, va_list);
196 extern	Rune*	runeseprint(Rune*, Rune*, char*, ...);
197 extern	Rune*	runevseprint(Rune*, Rune*, char*, va_list);
198 extern	Rune*	runesmprint(char*, ...);
199 extern	Rune*	runevsmprint(char*, va_list);
200 
201 extern	int	fmtfdinit(Fmt*, int, char*, int);
202 extern	int	fmtfdflush(Fmt*);
203 extern	int	fmtstrinit(Fmt*);
204 extern	char*	fmtstrflush(Fmt*);
205 extern	int	runefmtstrinit(Fmt*);
206 extern	Rune*	runefmtstrflush(Fmt*);
207 
208 extern	int	fmtinstall(int, int (*)(Fmt*));
209 extern	int	dofmt(Fmt*, char*);
210 extern	int	dorfmt(Fmt*, Rune*);
211 extern	int	fmtprint(Fmt*, char*, ...);
212 extern	int	fmtvprint(Fmt*, char*, va_list);
213 extern	int	fmtrune(Fmt*, int);
214 extern	int	fmtstrcpy(Fmt*, char*);
215 extern	int	fmtrunestrcpy(Fmt*, Rune*);
216  */
217 
218 /*
219  * error string for %r
220  * supplied on per os basis, not part of fmt library
221  *
222  * (provided by lib9, but declared in fmt.h)
223  *
224 extern	int	errfmt(Fmt *f);
225  */
226 
227 /*
228  * quoted strings
229  */
230 extern	char	*unquotestrdup(char*);
231 extern	Rune	*unquoterunestrdup(Rune*);
232 extern	char	*quotestrdup(char*);
233 extern	Rune	*quoterunestrdup(Rune*);
234 /*
235  * in fmt.h
236  *
237 extern	void	quotefmtinstall(void);
238 extern	int	quotestrfmt(Fmt*);
239 extern	int	quoterunestrfmt(Fmt*);
240  */
241 #ifndef NOPLAN9DEFINES
242 #define doquote fmtdoquote
243 #endif
244 extern	int	needsrcquote(int);
245 
246 /*
247  * random number
248  */
249 extern	void	p9srand(long);
250 extern	int	p9rand(void);
251 
252 extern	int	p9nrand(int);
253 extern	long	p9lrand(void);
254 extern	long	p9lnrand(long);
255 extern	double	p9frand(void);
256 extern	ulong	truerand(void);			/* uses /dev/random */
257 extern	ulong	ntruerand(ulong);		/* uses /dev/random */
258 
259 #ifndef NOPLAN9DEFINES
260 #define	srand	p9srand
261 #define	rand	p9rand
262 #define	nrand	p9nrand
263 #define	lrand	p9lrand
264 #define	lnrand	p9lnrand
265 #define	frand	p9frand
266 #endif
267 
268 /*
269  * math
270  */
271 extern	ulong	getfcr(void);
272 extern	void	setfsr(ulong);
273 extern	ulong	getfsr(void);
274 extern	void	setfcr(ulong);
275 extern	double	NaN(void);
276 extern	double	Inf(int);
277 extern	int	isNaN(double);
278 extern	int	isInf(double, int);
279 extern	ulong	umuldiv(ulong, ulong, ulong);
280 extern	long	muldiv(long, long, long);
281 
282 /*
283  * provided by math.h
284  *
285 extern	double	pow(double, double);
286 extern	double	atan2(double, double);
287 extern	double	fabs(double);
288 extern	double	atan(double);
289 extern	double	log(double);
290 extern	double	log10(double);
291 extern	double	exp(double);
292 extern	double	floor(double);
293 extern	double	ceil(double);
294 extern	double	hypot(double, double);
295 extern	double	sin(double);
296 extern	double	cos(double);
297 extern	double	tan(double);
298 extern	double	asin(double);
299 extern	double	acos(double);
300 extern	double	sinh(double);
301 extern	double	cosh(double);
302 extern	double	tanh(double);
303 extern	double	sqrt(double);
304 extern	double	fmod(double, double);
305 #define	HUGE	3.4028234e38
306 #define	PIO2	1.570796326794896619231e0
307 #define	PI	(PIO2+PIO2)
308  */
309 #define PI	M_PI
310 #define	PIO2	M_PI_2
311 
312 /*
313  * Time-of-day
314  */
315 
316 typedef
317 struct Tm
318 {
319 	int	sec;
320 	int	min;
321 	int	hour;
322 	int	mday;
323 	int	mon;
324 	int	year;
325 	int	wday;
326 	int	yday;
327 	char	zone[4];
328 	int	tzoff;
329 } Tm;
330 
331 extern	Tm*	p9gmtime(long);
332 extern	Tm*	p9localtime(long);
333 extern	char*	p9asctime(Tm*);
334 extern	char*	p9ctime(long);
335 extern	double	p9cputime(void);
336 extern	long	p9times(long*);
337 extern	long	p9tm2sec(Tm*);
338 extern	vlong	p9nsec(void);
339 
340 #ifndef NOPLAN9DEFINES
341 #define	gmtime		p9gmtime
342 #define	localtime	p9localtime
343 #define	asctime		p9asctime
344 #define	ctime		p9ctime
345 #define	cputime		p9cputime
346 #define	times		p9times
347 #define	tm2sec		p9tm2sec
348 #define	nsec		p9nsec
349 #endif
350 
351 /*
352  * one-of-a-kind
353  */
354 enum
355 {
356 	PNPROC		= 1,
357 	PNGROUP		= 2
358 };
359 
360 /* extern	int	abs(int); <stdlib.h> */
361 extern	int	p9atexit(void(*)(void));
362 extern	void	p9atexitdont(void(*)(void));
363 extern	int	atnotify(int(*)(void*, char*), int);
364 /* 
365  * <stdlib.h>
366 extern	double	atof(char*); <stdlib.h>
367  */
368 extern	int	p9atoi(char*);
369 extern	long	p9atol(char*);
370 extern	vlong	p9atoll(char*);
371 extern	double	fmtcharstod(int(*)(void*), void*);
372 extern	char*	cleanname(char*);
373 extern	int	p9decrypt(void*, void*, int);
374 extern	int	p9encrypt(void*, void*, int);
375 extern	int	netcrypt(void*, void*);
376 extern	int	dec64(uchar*, int, char*, int);
377 extern	int	enc64(char*, int, uchar*, int);
378 extern	int	dec32(uchar*, int, char*, int);
379 extern	int	enc32(char*, int, uchar*, int);
380 extern	int	dec16(uchar*, int, char*, int);
381 extern	int	enc16(char*, int, uchar*, int);
382 extern	int	encodefmt(Fmt*);
383 extern	int	dirmodefmt(Fmt*);
384 extern	int	exitcode(char*);
385 extern	void	exits(char*);
386 extern	double	frexp(double, int*);
387 extern	ulong	getcallerpc(void*);
388 extern	char*	p9getenv(char*);
389 extern	int	p9putenv(char*, char*);
390 extern	int	getfields(char*, char**, int, int, char*);
391 extern	int	gettokens(char *, char **, int, char *);
392 extern	char*	getuser(void);
393 extern	char*	p9getwd(char*, int);
394 extern	int	iounit(int);
395 /* extern	long	labs(long); <math.h> */
396 /* extern	double	ldexp(double, int); <math.h> */
397 extern	void	p9longjmp(p9jmp_buf, int);
398 extern	char*	mktemp(char*);
399 extern	int		opentemp(char*, int);
400 /* extern	double	modf(double, double*); <math.h> */
401 extern	void	p9notejmp(void*, p9jmp_buf, int);
402 extern	void	perror(const char*);
403 extern	int	postnote(int, int, char *);
404 extern	double	p9pow10(int);
405 /* extern	int	putenv(char*, char*); <stdlib.h. */
406 /* extern	void	qsort(void*, long, long, int (*)(void*, void*)); <stdlib.h> */
407 extern	char*	searchpath(char*);
408 /* extern	int	p9setjmp(p9jmp_buf); */
409 #define p9setjmp(b)	sigsetjmp((void*)(b), 1)
410 /*
411  * <stdlib.h>
412 extern	long	strtol(char*, char**, int);
413 extern	ulong	strtoul(char*, char**, int);
414 extern	vlong	strtoll(char*, char**, int);
415 extern	uvlong	strtoull(char*, char**, int);
416  */
417 extern	void	sysfatal(char*, ...);
418 extern	void	p9syslog(int, char*, char*, ...);
419 extern	long	p9time(long*);
420 /* extern	int	tolower(int); <ctype.h> */
421 /* extern	int	toupper(int); <ctype.h> */
422 extern	void	needstack(int);
423 extern	char*	readcons(char*, char*, int);
424 
425 extern	void	(*_pin)(void);
426 extern	void	(*_unpin)(void);
427 
428 #ifndef NOPLAN9DEFINES
429 #define atexit		p9atexit
430 #define atexitdont	p9atexitdont
431 #define atoi		p9atoi
432 #define atol		p9atol
433 #define atoll		p9atoll
434 #define encrypt		p9encrypt
435 #define decrypt		p9decrypt
436 #define getenv		p9getenv
437 #define	getwd		p9getwd
438 #define	longjmp		p9longjmp
439 #undef  setjmp
440 #define setjmp		p9setjmp
441 #define putenv		p9putenv
442 #define notejmp		p9notejmp
443 #define jmp_buf		p9jmp_buf
444 #define time		p9time
445 #define pow10		p9pow10
446 #define strtod		fmtstrtod
447 #define charstod	fmtcharstod
448 #define syslog		p9syslog
449 #endif
450 
451 /*
452  *  just enough information so that libc can be
453  *  properly locked without dragging in all of libthread
454  */
455 typedef struct _Thread _Thread;
456 typedef struct _Threadlist _Threadlist;
457 struct _Threadlist
458 {
459 	_Thread	*head;
460 	_Thread	*tail;
461 };
462 
463 extern	_Thread	*(*threadnow)(void);
464 
465 /*
466  *  synchronization
467  */
468 typedef struct Lock Lock;
469 struct Lock
470 {
471 #ifdef PLAN9PORT_USING_PTHREADS
472 	int init;
473 	pthread_mutex_t mutex;
474 #endif
475 	int held;
476 };
477 
478 extern	void	lock(Lock*);
479 extern	void	unlock(Lock*);
480 extern	int	canlock(Lock*);
481 extern	int	(*_lock)(Lock*, int, ulong);
482 extern	void	(*_unlock)(Lock*, ulong);	
483 
484 typedef struct QLock QLock;
485 struct QLock
486 {
487 	Lock		l;
488 	_Thread	*owner;
489 	_Threadlist	waiting;
490 };
491 
492 extern	void	qlock(QLock*);
493 extern	void	qunlock(QLock*);
494 extern	int	canqlock(QLock*);
495 extern	int	(*_qlock)(QLock*, int, ulong);	/* do not use */
496 extern	void	(*_qunlock)(QLock*, ulong);
497 
498 typedef struct Rendez Rendez;
499 struct Rendez
500 {
501 	QLock	*l;
502 	_Threadlist	waiting;
503 };
504 
505 extern	void	rsleep(Rendez*);	/* unlocks r->l, sleeps, locks r->l again */
506 extern	int	rwakeup(Rendez*);
507 extern	int	rwakeupall(Rendez*);
508 extern	void	(*_rsleep)(Rendez*, ulong);	/* do not use */
509 extern	int	(*_rwakeup)(Rendez*, int, ulong);
510 
511 typedef struct RWLock RWLock;
512 struct RWLock
513 {
514 	Lock		l;
515 	int	readers;
516 	_Thread	*writer;
517 	_Threadlist	rwaiting;
518 	_Threadlist	wwaiting;
519 };
520 
521 extern	void	rlock(RWLock*);
522 extern	void	runlock(RWLock*);
523 extern	int		canrlock(RWLock*);
524 extern	void	wlock(RWLock*);
525 extern	void	wunlock(RWLock*);
526 extern	int		canwlock(RWLock*);
527 extern	int	(*_rlock)(RWLock*, int, ulong);	/* do not use */
528 extern	int	(*_wlock)(RWLock*, int, ulong);
529 extern	void	(*_runlock)(RWLock*, ulong);
530 extern	void	(*_wunlock)(RWLock*, ulong);
531 
532 /*
533  * per-process private data
534  */
535 extern	void**	privalloc(void);
536 extern	void	privfree(void**);
537 
538 /*
539  *  network dialing
540  */
541 #define NETPATHLEN 40
542 extern	int	p9accept(int, char*);
543 extern	int	p9announce(char*, char*);
544 extern	int	p9dial(char*, char*, char*, int*);
545 extern	int	p9dialparse(char *ds, char **net, char **unixa, void *ip, int *port);
546 extern	void	p9setnetmtpt(char*, int, char*);
547 extern	int	p9listen(char*, char*);
548 extern	char*	p9netmkaddr(char*, char*, char*);
549 extern	int	p9reject(int, char*, char*);
550 
551 #ifndef NOPLAN9DEFINES
552 #define	accept		p9accept
553 #define	announce	p9announce
554 #define	dial		p9dial
555 #define	setnetmtpt	p9setnetmtpt
556 #define	listen		p9listen
557 #define	netmkaddr	p9netmkaddr
558 #define	reject		p9reject
559 #endif
560 
561 /*
562  *  encryption
563  */
564 extern	int	pushssl(int, char*, char*, char*, int*);
565 extern	int	pushtls(int, char*, char*, int, char*, char*);
566 
567 /*
568  *  network services
569  */
570 typedef struct NetConnInfo NetConnInfo;
571 struct NetConnInfo
572 {
573 	char	*dir;		/* connection directory */
574 	char	*root;		/* network root */
575 	char	*spec;		/* binding spec */
576 	char	*lsys;		/* local system */
577 	char	*lserv;		/* local service */
578 	char	*rsys;		/* remote system */
579 	char	*rserv;		/* remote service */
580 	char *laddr;
581 	char *raddr;
582 };
583 extern	NetConnInfo*	getnetconninfo(char*, int);
584 extern	void		freenetconninfo(NetConnInfo*);
585 
586 /*
587  * system calls
588  *
589  */
590 #define	STATMAX	65535U	/* max length of machine-independent stat structure */
591 #define	DIRMAX	(sizeof(Dir)+STATMAX)	/* max length of Dir structure */
592 #define	ERRMAX	128	/* max length of error string */
593 
594 #define	MORDER	0x0003	/* mask for bits defining order of mounting */
595 #define	MREPL	0x0000	/* mount replaces object */
596 #define	MBEFORE	0x0001	/* mount goes before others in union directory */
597 #define	MAFTER	0x0002	/* mount goes after others in union directory */
598 #define	MCREATE	0x0004	/* permit creation in mounted directory */
599 #define	MCACHE	0x0010	/* cache some data */
600 #define	MMASK	0x0017	/* all bits on */
601 
602 #define	OREAD	0	/* open for read */
603 #define	OWRITE	1	/* write */
604 #define	ORDWR	2	/* read and write */
605 #define	OEXEC	3	/* execute, == read but check execute permission */
606 #define	OTRUNC	16	/* or'ed in (except for exec), truncate file first */
607 #define	OCEXEC	32	/* or'ed in, close on exec */
608 #define	ORCLOSE	64	/* or'ed in, remove on close */
609 #define	ODIRECT	128	/* or'ed in, direct access */
610 #define	ONONBLOCK 256	/* or'ed in, non-blocking call */
611 #define	OEXCL	0x1000	/* or'ed in, exclusive use (create only) */
612 #define	OLOCK	0x2000	/* or'ed in, lock after opening */
613 #define	OAPPEND	0x4000	/* or'ed in, append only */
614 
615 #define	AEXIST	0	/* accessible: exists */
616 #define	AEXEC	1	/* execute access */
617 #define	AWRITE	2	/* write access */
618 #define	AREAD	4	/* read access */
619 
620 /* Segattch */
621 #define	SG_RONLY	0040	/* read only */
622 #define	SG_CEXEC	0100	/* detach on exec */
623 
624 #define	NCONT	0	/* continue after note */
625 #define	NDFLT	1	/* terminate after note */
626 #define	NSAVE	2	/* clear note but hold state */
627 #define	NRSTR	3	/* restore saved state */
628 
629 /* bits in Qid.type */
630 #define QTDIR		0x80		/* type bit for directories */
631 #define QTAPPEND	0x40		/* type bit for append only files */
632 #define QTEXCL		0x20		/* type bit for exclusive use files */
633 #define QTMOUNT		0x10		/* type bit for mounted channel */
634 #define QTAUTH		0x08		/* type bit for authentication file */
635 #define QTTMP		0x04		/* type bit for non-backed-up file */
636 #define QTSYMLINK	0x02		/* type bit for symbolic link */
637 #define QTFILE		0x00		/* type bits for plain file */
638 
639 /* bits in Dir.mode */
640 #define DMDIR		0x80000000	/* mode bit for directories */
641 #define DMAPPEND	0x40000000	/* mode bit for append only files */
642 #define DMEXCL		0x20000000	/* mode bit for exclusive use files */
643 #define DMMOUNT		0x10000000	/* mode bit for mounted channel */
644 #define DMAUTH		0x08000000	/* mode bit for authentication file */
645 #define DMTMP		0x04000000	/* mode bit for non-backed-up file */
646 #define DMSYMLINK	0x02000000	/* mode bit for symbolic link (Unix, 9P2000.u) */
647 #define DMDEVICE	0x00800000	/* mode bit for device file (Unix, 9P2000.u) */
648 #define DMNAMEDPIPE	0x00200000	/* mode bit for named pipe (Unix, 9P2000.u) */
649 #define DMSOCKET	0x00100000	/* mode bit for socket (Unix, 9P2000.u) */
650 #define DMSETUID	0x00080000	/* mode bit for setuid (Unix, 9P2000.u) */
651 #define DMSETGID	0x00040000	/* mode bit for setgid (Unix, 9P2000.u) */
652 
653 #define DMREAD		0x4		/* mode bit for read permission */
654 #define DMWRITE		0x2		/* mode bit for write permission */
655 #define DMEXEC		0x1		/* mode bit for execute permission */
656 
657 #ifdef RFMEM	/* FreeBSD, OpenBSD */
658 #undef RFFDG
659 #undef RFNOTEG
660 #undef RFPROC
661 #undef RFMEM
662 #undef RFNOWAIT
663 #undef RFCFDG
664 #undef RFNAMEG
665 #undef RFENVG
666 #undef RFCENVG
667 #undef RFCFDG
668 #undef RFCNAMEG
669 #endif
670 
671 enum
672 {
673 	RFNAMEG		= (1<<0), 
674 	RFENVG		= (1<<1), 
675 	RFFDG		= (1<<2),
676 	RFNOTEG		= (1<<3),
677 	RFPROC		= (1<<4),
678 	RFMEM		= (1<<5),
679 	RFNOWAIT	= (1<<6),
680 	RFCNAMEG	= (1<<10), 
681 	RFCENVG		= (1<<11), 
682 	RFCFDG		= (1<<12)
683 /*	RFREND		= (1<<13), */
684 /*	RFNOMNT		= (1<<14) */
685 };
686 
687 typedef
688 struct Qid
689 {
690 	uvlong	path;
691 	ulong	vers;
692 	uchar	type;
693 } Qid;
694 
695 typedef
696 struct Dir {
697 	/* system-modified data */
698 	ushort	type;	/* server type */
699 	uint	dev;	/* server subtype */
700 	/* file data */
701 	Qid	qid;	/* unique id from server */
702 	ulong	mode;	/* permissions */
703 	ulong	atime;	/* last read time */
704 	ulong	mtime;	/* last write time */
705 	vlong	length;	/* file length */
706 	char	*name;	/* last element of path */
707 	char	*uid;	/* owner name */
708 	char	*gid;	/* group name */
709 	char	*muid;	/* last modifier name */
710 	
711 	/* 9P2000.u extensions */
712 	uint	uidnum;		/* numeric uid */
713 	uint	gidnum;		/* numeric gid */
714 	uint	muidnum;	/* numeric muid */
715 	char	*ext;		/* extended info */
716 } Dir;
717 
718 /* keep /sys/src/ape/lib/ap/plan9/sys9.h in sync with this -rsc */
719 typedef
720 struct Waitmsg
721 {
722 	int pid;	/* of loved one */
723 	ulong time[3];	/* of loved one & descendants */
724 	char	*msg;
725 } Waitmsg;
726 
727 typedef
728 struct IOchunk
729 {
730 	void	*addr;
731 	ulong	len;
732 } IOchunk;
733 
734 extern	void	_exits(char*);
735 
736 extern	void	abort(void);
737 /* extern	int	access(char*, int); */
738 extern	long	p9alarm(ulong);
739 extern	int	await(char*, int);
740 extern	int	awaitfor(int, char*, int);
741 extern	int	awaitnohang(char*, int);
742 /* extern	int	bind(char*, char*, int); give up */
743 /* extern	int	brk(void*); <unistd.h> */
744 extern	int	p9chdir(char*);
745 extern	int	close(int);
746 extern	int	p9create(char*, int, ulong);
747 extern	int	p9dup(int, int);
748 extern	int	errstr(char*, uint);
749 extern	int	p9exec(char*, char*[]);
750 extern	int	p9execl(char*, ...);
751 /* extern	int	p9fork(void); */
752 extern	int	p9rfork(int);
753 /* not implemented 
754 extern	int	fauth(int, char*);
755 extern	int	fstat(int, uchar*, int);
756 extern	int	fwstat(int, uchar*, int);
757 extern	int	fversion(int, int, char*, int);
758 extern	int	mount(int, int, char*, int, char*);
759 extern	int	unmount(char*, char*);
760 */
761 extern	int	noted(int);
762 extern	int	notify(void(*)(void*, char*));
763 extern	int	noteenable(char*);
764 extern	int	notedisable(char*);
765 extern	int	notifyon(char*);
766 extern	int	notifyoff(char*);
767 extern	int	p9open(char*, int);
768 extern	int	fd2path(int, char*, int);
769 extern	int	p9pipe(int*);
770 /* 
771  * use defs from <unistd.h>
772 extern	long	pread(int, void*, long, vlong);
773 extern	long	preadv(int, IOchunk*, int, vlong);
774 extern	long	pwrite(int, void*, long, vlong);
775 extern	long	pwritev(int, IOchunk*, int, vlong);
776 extern	long	read(int, void*, long);
777  */
778 extern	long	readn(int, void*, long);
779 /* extern	long	readv(int, IOchunk*, int); <unistd.h> */
780 extern	int	remove(const char*);
781 /* extern	void*	sbrk(ulong); <unistd.h> */
782 /* extern	long	oseek(int, long, int); */
783 extern	vlong	p9seek(int, vlong, int);
784 /* give up
785 extern	long	segattach(int, char*, void*, ulong);
786 extern	int	segbrk(void*, void*);
787 extern	int	segdetach(void*);
788 extern	int	segflush(void*, ulong);
789 extern	int	segfree(void*, ulong);
790 */
791 extern	int	p9sleep(long);
792 /* extern	int	stat(char*, uchar*, int); give up */
793 extern	Waitmsg*	p9wait(void);
794 extern	Waitmsg*	p9waitfor(int);
795 extern	Waitmsg*	waitnohang(void);
796 extern	int	p9waitpid(void);
797 /* <unistd.h>
798 extern	long	write(int, void*, long);
799 extern	long	writev(int, IOchunk*, int);
800 */
801 extern	long	p9write(int, void*, long);
802 /* extern	int	wstat(char*, uchar*, int); give up */
803 extern	ulong	rendezvous(ulong, ulong);
804 
805 #ifndef NOPLAN9DEFINES
806 #define alarm		p9alarm
807 #define	dup		p9dup
808 #define	exec		p9exec
809 #define	execl	p9execl
810 #define	seek		p9seek
811 #define sleep		p9sleep
812 #define wait		p9wait
813 #define waitpid		p9waitpid
814 /* #define fork		p9fork */
815 #define rfork		p9rfork
816 /* #define access		p9access */
817 #define create		p9create
818 #undef open
819 #define open		p9open
820 #define pipe		p9pipe
821 #define	waitfor		p9waitfor
822 #define write		p9write
823 #endif
824 
825 extern	Dir*	dirstat(char*);
826 extern	Dir*	dirfstat(int);
827 extern	int	dirwstat(char*, Dir*);
828 extern	int	dirfwstat(int, Dir*);
829 extern	long	dirread(int, Dir**);
830 extern	void	nulldir(Dir*);
831 extern	long	dirreadall(int, Dir**);
832 /* extern	int	getpid(void); <unistd.h> */
833 /* extern	int	getppid(void); */
834 extern	void	rerrstr(char*, uint);
835 extern	char*	sysname(void);
836 extern	void	werrstr(char*, ...);
837 extern	char*	getns(void);
838 extern	char*	get9root(void);
839 extern	char*	unsharp(char*);
840 extern	int	sendfd(int, int);
841 extern	int	recvfd(int);
842 extern	int	post9pservice(int, char*, char*);
843 extern	int	chattyfuse;
844 
845 /* external names that we don't want to step on */
846 #ifndef NOPLAN9DEFINES
847 #define main	p9main
848 #endif
849 
850 #ifdef VARARGCK
851 #pragma	varargck	type	"lld"	vlong
852 #pragma	varargck	type	"llx"	vlong
853 #pragma	varargck	type	"lld"	uvlong
854 #pragma	varargck	type	"llx"	uvlong
855 #pragma	varargck	type	"ld"	long
856 #pragma	varargck	type	"lx"	long
857 #pragma	varargck	type	"ld"	ulong
858 #pragma	varargck	type	"lx"	ulong
859 #pragma	varargck	type	"d"	int
860 #pragma	varargck	type	"x"	int
861 #pragma	varargck	type	"c"	int
862 #pragma	varargck	type	"C"	int
863 #pragma	varargck	type	"d"	uint
864 #pragma	varargck	type	"x"	uint
865 #pragma	varargck	type	"c"	uint
866 #pragma	varargck	type	"C"	uint
867 #pragma	varargck	type	"f"	double
868 #pragma	varargck	type	"e"	double
869 #pragma	varargck	type	"g"	double
870 #pragma	varargck	type	"lf"	long double
871 #pragma	varargck	type	"le"	long double
872 #pragma	varargck	type	"lg"	long double
873 #pragma	varargck	type	"s"	char*
874 #pragma	varargck	type	"q"	char*
875 #pragma	varargck	type	"S"	Rune*
876 #pragma	varargck	type	"Q"	Rune*
877 #pragma	varargck	type	"r"	void
878 #pragma	varargck	type	"%"	void
879 #pragma	varargck	type	"n"	int*
880 #pragma	varargck	type	"p"	void*
881 #pragma	varargck	type	"<"	void*
882 #pragma	varargck	type	"["	void*
883 #pragma	varargck	type	"H"	void*
884 #pragma	varargck	type	"lH"	void*
885 
886 #pragma	varargck	flag	' '
887 #pragma	varargck	flag	'#'
888 #pragma	varargck	flag	'+'
889 #pragma	varargck	flag	','
890 #pragma	varargck	flag	'-'
891 #pragma	varargck	flag	'u'
892 
893 #pragma	varargck	argpos	fmtprint	2
894 #pragma	varargck	argpos	fprint	2
895 #pragma	varargck	argpos	print	1
896 #pragma	varargck	argpos	runeseprint	3
897 #pragma	varargck	argpos	runesmprint	1
898 #pragma	varargck	argpos	runesnprint	3
899 #pragma	varargck	argpos	runesprint	2
900 #pragma	varargck	argpos	seprint	3
901 #pragma	varargck	argpos	smprint	1
902 #pragma	varargck	argpos	snprint	3
903 #pragma	varargck	argpos	sprint	2
904 #pragma	varargck	argpos	sysfatal	1
905 #pragma	varargck	argpos	p9syslog	3
906 #pragma	varargck	argpos	werrstr	1
907 #endif
908 
909 /* compiler directives on plan 9 */
910 #define	SET(x)	((x)=0)
911 #define	USED(x)	if(x){}else{}
912 #ifdef __GNUC__
913 #	if __GNUC__ >= 3
914 #		undef USED
915 #		define USED(x) ((void)(x))
916 #	endif
917 #endif
918 
919 /* command line */
920 extern char	*argv0;
921 extern void __fixargv0(void);
922 #define	ARGBEGIN	for((argv0?0:(argv0=(__fixargv0(),*argv))),argv++,argc--;\
923 			    argv[0] && argv[0][0]=='-' && argv[0][1];\
924 			    argc--, argv++) {\
925 				char *_args, *_argt;\
926 				Rune _argc;\
927 				_args = &argv[0][1];\
928 				if(_args[0]=='-' && _args[1]==0){\
929 					argc--; argv++; break;\
930 				}\
931 				_argc = 0;\
932 				while(*_args && (_args += chartorune(&_argc, _args)))\
933 				switch(_argc)
934 #define	ARGEND		SET(_argt);USED(_argt);USED(_argc);USED(_args);}USED(argv);USED(argc);
935 #define	ARGF()		(_argt=_args, _args="",\
936 				(*_argt? _argt: argv[1]? (argc--, *++argv): 0))
937 #define	EARGF(x)	(_argt=_args, _args="",\
938 				(*_argt? _argt: argv[1]? (argc--, *++argv): ((x), abort(), (char*)0)))
939 
940 #define	ARGC()		_argc
941 
942 #if defined(__cplusplus)
943 }
944 #endif
945 #endif	/* _LIB9_H_ */