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*	mallocz(ulong, int);
198 /*
199 extern	void	free(void*);
200 extern	ulong	msize(void*);
201 extern	void*	calloc(ulong, ulong);
202 extern	void*	realloc(void*, ulong);
203  */
204 extern	void		setmalloctag(void*, ulong);
205 extern	void		setrealloctag(void*, ulong);
206 extern	ulong	getmalloctag(void*);
207 extern	ulong	getrealloctag(void*);
208 /*
209 extern	void*	malloctopoolblock(void*);
210 */
211 
212 /*
213  * print routines (provided by <fmt.h>)
214  *
215 typedef struct Fmt	Fmt;
216 struct Fmt{
217 	uchar	runes;
218 	void	*start;
219 	void	*to;
220 	void	*stop;
221 	int	(*flush)(Fmt *);
222 	void	*farg;
223 	int	nfmt;
224 	va_list	args;
225 	int	r;
226 	int	width;
227 	int	prec;
228 	ulong	flags;
229 };
230 
231 enum{
232 	FmtWidth	= 1,
233 	FmtLeft		= FmtWidth << 1,
234 	FmtPrec		= FmtLeft << 1,
235 	FmtSharp	= FmtPrec << 1,
236 	FmtSpace	= FmtSharp << 1,
237 	FmtSign		= FmtSpace << 1,
238 	FmtZero		= FmtSign << 1,
239 	FmtUnsigned	= FmtZero << 1,
240 	FmtShort	= FmtUnsigned << 1,
241 	FmtLong		= FmtShort << 1,
242 	FmtVLong	= FmtLong << 1,
243 	FmtComma	= FmtVLong << 1,
244 	FmtByte	= FmtComma << 1,
245 
246 	FmtFlag		= FmtByte << 1
247 };
248 
249 extern	int	print(char*, ...);
250 extern	char*	seprint(char*, char*, char*, ...);
251 extern	char*	vseprint(char*, char*, char*, va_list);
252 extern	int	snprint(char*, int, char*, ...);
253 extern	int	vsnprint(char*, int, char*, va_list);
254 extern	char*	smprint(char*, ...);
255 extern	char*	vsmprint(char*, va_list);
256 extern	int	sprint(char*, char*, ...);
257 extern	int	fprint(int, char*, ...);
258 extern	int	vfprint(int, char*, va_list);
259 
260 extern	int	runesprint(Rune*, char*, ...);
261 extern	int	runesnprint(Rune*, int, char*, ...);
262 extern	int	runevsnprint(Rune*, int, char*, va_list);
263 extern	Rune*	runeseprint(Rune*, Rune*, char*, ...);
264 extern	Rune*	runevseprint(Rune*, Rune*, char*, va_list);
265 extern	Rune*	runesmprint(char*, ...);
266 extern	Rune*	runevsmprint(char*, va_list);
267 
268 extern	int	fmtfdinit(Fmt*, int, char*, int);
269 extern	int	fmtfdflush(Fmt*);
270 extern	int	fmtstrinit(Fmt*);
271 extern	char*	fmtstrflush(Fmt*);
272 extern	int	runefmtstrinit(Fmt*);
273 extern	Rune*	runefmtstrflush(Fmt*);
274 
275 extern	int	fmtinstall(int, int (*)(Fmt*));
276 extern	int	dofmt(Fmt*, char*);
277 extern	int	dorfmt(Fmt*, Rune*);
278 extern	int	fmtprint(Fmt*, char*, ...);
279 extern	int	fmtvprint(Fmt*, char*, va_list);
280 extern	int	fmtrune(Fmt*, int);
281 extern	int	fmtstrcpy(Fmt*, char*);
282 extern	int	fmtrunestrcpy(Fmt*, Rune*);
283  */
284 
285 /*
286  * error string for %r
287  * supplied on per os basis, not part of fmt library
288  *
289  * (provided by lib9, but declared in fmt.h)
290  *
291 extern	int	errfmt(Fmt *f);
292  */
293 
294 /*
295  * quoted strings
296  */
297 extern	char	*unquotestrdup(char*);
298 extern	Rune	*unquoterunestrdup(Rune*);
299 extern	char	*quotestrdup(char*);
300 extern	Rune	*quoterunestrdup(Rune*);
301 /*
302  * in fmt.h
303  *
304 extern	void	quotefmtinstall(void);
305 extern	int	quotestrfmt(Fmt*);
306 extern	int	quoterunestrfmt(Fmt*);
307  */
308 #ifndef NOPLAN9DEFINES
309 #define doquote fmtdoquote
310 #endif
311 extern	int	needsrcquote(int);
312 
313 /*
314  * random number (in <stdlib.h>)
315  *
316 extern	void	srand(long);
317 extern	int	rand(void);
318  */
319 extern	int	nrand(int);
320 extern	long	lrand(void);
321 extern	long	lnrand(long);
322 extern	double	frand(void);
323 extern	ulong	truerand(void);			/* uses /dev/random */
324 extern	ulong	ntruerand(ulong);		/* uses /dev/random */
325 
326 /*
327  * math
328  */
329 extern	ulong	getfcr(void);
330 extern	void	setfsr(ulong);
331 extern	ulong	getfsr(void);
332 extern	void	setfcr(ulong);
333 extern	double	NaN(void);
334 extern	double	Inf(int);
335 extern	int	isNaN(double);
336 extern	int	isInf(double, int);
337 extern	ulong	umuldiv(ulong, ulong, ulong);
338 extern	long	muldiv(long, long, long);
339 
340 /*
341  * provided by math.h
342  *
343 extern	double	pow(double, double);
344 extern	double	atan2(double, double);
345 extern	double	fabs(double);
346 extern	double	atan(double);
347 extern	double	log(double);
348 extern	double	log10(double);
349 extern	double	exp(double);
350 extern	double	floor(double);
351 extern	double	ceil(double);
352 extern	double	hypot(double, double);
353 extern	double	sin(double);
354 extern	double	cos(double);
355 extern	double	tan(double);
356 extern	double	asin(double);
357 extern	double	acos(double);
358 extern	double	sinh(double);
359 extern	double	cosh(double);
360 extern	double	tanh(double);
361 extern	double	sqrt(double);
362 extern	double	fmod(double, double);
363 #define	HUGE	3.4028234e38
364 #define	PIO2	1.570796326794896619231e0
365 #define	PI	(PIO2+PIO2)
366  */
367 #define PI	M_PI
368 #define	PIO2	M_PI_2
369 
370 /*
371  * Time-of-day
372  */
373 
374 typedef
375 struct Tm
376 {
377 	int	sec;
378 	int	min;
379 	int	hour;
380 	int	mday;
381 	int	mon;
382 	int	year;
383 	int	wday;
384 	int	yday;
385 	char	zone[4];
386 	int	tzoff;
387 } Tm;
388 
389 extern	Tm*	p9gmtime(long);
390 extern	Tm*	p9localtime(long);
391 extern	char*	p9asctime(Tm*);
392 extern	char*	p9ctime(long);
393 extern	double	p9cputime(void);
394 extern	long	p9times(long*);
395 extern	long	p9tm2sec(Tm*);
396 extern	vlong	p9nsec(void);
397 
398 #ifndef NOPLAN9DEFINES
399 #define	gmtime		p9gmtime
400 #define	localtime	p9localtime
401 #define	asctime		p9asctime
402 #define	ctime		p9ctime
403 #define	cputime		p9cputime
404 #define	times		p9times
405 #define	tm2sec		p9tm2sec
406 #define	nsec		p9nsec
407 #endif
408 
409 /*
410  * one-of-a-kind
411  */
412 enum
413 {
414 	PNPROC		= 1,
415 	PNGROUP		= 2,
416 };
417 
418 /* extern	int	abs(int); <stdlib.h> */
419 extern	int	p9atexit(void(*)(void));
420 extern	void	p9atexitdont(void(*)(void));
421 extern	int	atnotify(int(*)(void*, char*), int);
422 /* 
423  * <stdlib.h>
424 extern	double	atof(char*); <stdlib.h>
425 extern	int	atoi(char*);
426 extern	long	atol(char*);
427  */
428 extern	vlong	atoll(const char*);
429 extern	double	charstod(int(*)(void*), void*);
430 extern	char*	cleanname(char*);
431 extern	int	p9decrypt(void*, void*, int);
432 extern	int	p9encrypt(void*, void*, int);
433 extern	int	dec64(uchar*, int, char*, int);
434 extern	int	enc64(char*, int, uchar*, int);
435 extern	int	dec32(uchar*, int, char*, int);
436 extern	int	enc32(char*, int, uchar*, int);
437 extern	int	dec16(uchar*, int, char*, int);
438 extern	int	enc16(char*, int, uchar*, int);
439 extern	int	encodefmt(Fmt*);
440 extern	int	dirmodefmt(Fmt*);
441 extern	void	exits(char*);
442 extern	double	frexp(double, int*);
443 extern	ulong	getcallerpc(void*);
444 extern	char*	p9getenv(char*);
445 extern	int	getfields(char*, char**, int, int, char*);
446 extern	int	gettokens(char *, char **, int, char *);
447 extern	char*	getuser(void);
448 extern	char*	p9getwd(char*, int);
449 extern	int	iounit(int);
450 /* extern	long	labs(long); <math.h> */
451 /* extern	double	ldexp(double, int); <math.h> */
452 extern	void	p9longjmp(p9jmp_buf, int);
453 extern	char*	mktemp(char*);
454 /* extern	double	modf(double, double*); <math.h> */
455 extern	int	netcrypt(void*, void*);
456 extern	void	p9notejmp(void*, p9jmp_buf, int);
457 extern	void	perror(const char*);
458 extern	int	postnote(int, int, char *);
459 extern	double	pow10(int);
460 /* extern	int	putenv(char*, char*); <stdlib.h. */
461 /* extern	void	qsort(void*, long, long, int (*)(void*, void*)); <stdlib.h> */
462 /* extern	int	p9setjmp(p9jmp_buf); */
463 #define p9setjmp(b)	sigsetjmp((void*)(b), 1)
464 /*
465  * <stdlib.h>
466 extern	double	strtod(char*, char**);
467 extern	long	strtol(char*, char**, int);
468 extern	ulong	strtoul(char*, char**, int);
469 extern	vlong	strtoll(char*, char**, int);
470 extern	uvlong	strtoull(char*, char**, int);
471  */
472 extern	void	sysfatal(char*, ...);
473 extern	void	syslog(int, char*, char*, ...);
474 extern	long	time(long*);
475 /* extern	int	tolower(int); <ctype.h> */
476 /* extern	int	toupper(int); <ctype.h> */
477 #ifndef NOPLAN9DEFINES
478 #define atexit		p9atexit
479 #define atexitdont	p9atexitdont
480 #define getenv		p9getenv
481 #define	getwd		p9getwd
482 #define	longjmp		p9longjmp
483 #undef  setjmp
484 #define setjmp		p9setjmp
485 #define notejmp		p9notejmp
486 #define jmp_buf		p9jmp_buf
487 #endif
488 
489 /*
490  *  synchronization
491  */
492 typedef
493 struct Lock {
494 	int	val;
495 } Lock;
496 
497 extern int	_tas(int*);
498 
499 extern	void	lock(Lock*);
500 extern	void	unlock(Lock*);
501 extern	int	canlock(Lock*);
502 
503 typedef struct QLp QLp;
504 struct QLp
505 {
506 	int	inuse;
507 	QLp	*next;
508 	char	state;
509 };
510 
511 typedef
512 struct QLock
513 {
514 	Lock	lock;
515 	int	locked;
516 	QLp	*head;
517 	QLp 	*tail;
518 } QLock;
519 
520 extern	void	qlock(QLock*);
521 extern	void	qunlock(QLock*);
522 extern	int	canqlock(QLock*);
523 extern	void	_qlockinit(ulong (*)(ulong, ulong));	/* called only by the thread library */
524 
525 typedef
526 struct RWLock
527 {
528 	Lock	lock;
529 	int	readers;	/* number of readers */
530 	int	writer;		/* number of writers */
531 	QLp	*head;		/* list of waiting processes */
532 	QLp	*tail;
533 } RWLock;
534 
535 extern	void	rlock(RWLock*);
536 extern	void	runlock(RWLock*);
537 extern	int		canrlock(RWLock*);
538 extern	void	wlock(RWLock*);
539 extern	void	wunlock(RWLock*);
540 extern	int		canwlock(RWLock*);
541 
542 typedef
543 struct Rendez
544 {
545 	QLock *l;
546 	QLp	*head;
547 	QLp	*tail;
548 } Rendez;
549 
550 extern	void	rsleep(Rendez*);	/* unlocks r->l, sleeps, locks r->l again */
551 extern	int	rwakeup(Rendez*);
552 extern	int	rwakeupall(Rendez*);
553 extern	void**	privalloc(void);
554 extern	void	privfree(void**);
555 
556 /*
557  *  network dialing
558  */
559 #define NETPATHLEN 40
560 extern	int	p9accept(int, char*);
561 extern	int	p9announce(char*, char*);
562 extern	int	p9dial(char*, char*, char*, int*);
563 extern	void	p9setnetmtpt(char*, int, char*);
564 extern	int	p9hangup(int);
565 extern	int	p9listen(char*, char*);
566 extern	char*	p9netmkaddr(char*, char*, char*);
567 extern	int	p9reject(int, char*, char*);
568 
569 #ifndef NOPLAN9DEFINES
570 #define	accept		p9accept
571 #define	announce	p9announce
572 #define	dial		p9dial
573 #define	setnetmtpt	p9setnetmtpt
574 #define	hangup		p9hangup
575 #define	listen		p9listen
576 #define	netmkaddr	p9netmkaddr
577 #define	reject		p9reject
578 #endif
579 
580 /*
581  *  encryption
582  */
583 extern	int	pushssl(int, char*, char*, char*, int*);
584 extern	int	pushtls(int, char*, char*, int, char*, char*);
585 
586 /*
587  *  network services
588  */
589 typedef struct NetConnInfo NetConnInfo;
590 struct NetConnInfo
591 {
592 	char	*dir;		/* connection directory */
593 	char	*root;		/* network root */
594 	char	*spec;		/* binding spec */
595 	char	*lsys;		/* local system */
596 	char	*lserv;		/* local service */
597 	char	*rsys;		/* remote system */
598 	char	*rserv;		/* remote service */
599 };
600 extern	NetConnInfo*	getnetconninfo(char*, int);
601 extern	void		freenetconninfo(NetConnInfo*);
602 
603 /*
604  * system calls
605  *
606  */
607 #define	STATMAX	65535U	/* max length of machine-independent stat structure */
608 #define	DIRMAX	(sizeof(Dir)+STATMAX)	/* max length of Dir structure */
609 #define	ERRMAX	128	/* max length of error string */
610 
611 #define	MORDER	0x0003	/* mask for bits defining order of mounting */
612 #define	MREPL	0x0000	/* mount replaces object */
613 #define	MBEFORE	0x0001	/* mount goes before others in union directory */
614 #define	MAFTER	0x0002	/* mount goes after others in union directory */
615 #define	MCREATE	0x0004	/* permit creation in mounted directory */
616 #define	MCACHE	0x0010	/* cache some data */
617 #define	MMASK	0x0017	/* all bits on */
618 
619 #define	OREAD	0	/* open for read */
620 #define	OWRITE	1	/* write */
621 #define	ORDWR	2	/* read and write */
622 #define	OEXEC	3	/* execute, == read but check execute permission */
623 #define	OTRUNC	16	/* or'ed in (except for exec), truncate file first */
624 #define	OCEXEC	32	/* or'ed in, close on exec */
625 #define	ORCLOSE	64	/* or'ed in, remove on close */
626 #define	OEXCL	0x1000	/* or'ed in, exclusive use (create only) */
627 
628 #define	AEXIST	0	/* accessible: exists */
629 #define	AEXEC	1	/* execute access */
630 #define	AWRITE	2	/* write access */
631 #define	AREAD	4	/* read access */
632 
633 /* Segattch */
634 #define	SG_RONLY	0040	/* read only */
635 #define	SG_CEXEC	0100	/* detach on exec */
636 
637 #define	NCONT	0	/* continue after note */
638 #define	NDFLT	1	/* terminate after note */
639 #define	NSAVE	2	/* clear note but hold state */
640 #define	NRSTR	3	/* restore saved state */
641 
642 /* bits in Qid.type */
643 #define QTDIR		0x80		/* type bit for directories */
644 #define QTAPPEND	0x40		/* type bit for append only files */
645 #define QTEXCL		0x20		/* type bit for exclusive use files */
646 #define QTMOUNT		0x10		/* type bit for mounted channel */
647 #define QTAUTH		0x08		/* type bit for authentication file */
648 #define QTFILE		0x00		/* plain file */
649 
650 /* bits in Dir.mode */
651 #define DMDIR		0x80000000	/* mode bit for directories */
652 #define DMAPPEND	0x40000000	/* mode bit for append only files */
653 #define DMEXCL		0x20000000	/* mode bit for exclusive use files */
654 #define DMMOUNT		0x10000000	/* mode bit for mounted channel */
655 #define DMAUTH		0x08000000	/* mode bit for authentication file */
656 #define DMREAD		0x4		/* mode bit for read permission */
657 #define DMWRITE		0x2		/* mode bit for write permission */
658 #define DMEXEC		0x1		/* mode bit for execute permission */
659 
660 #if defined(__FreeBSD__)
661 #undef RFFDG
662 #undef RFNOTEG
663 #undef RFPROC
664 #undef RFMEM
665 #undef RFNOWAIT
666 #undef RFCFDG
667 #endif
668 
669 enum
670 {
671 /*	RFNAMEG		= (1<<0), */
672 /*	RFENVG		= (1<<1), */
673 	RFFDG		= (1<<2),
674 	RFNOTEG		= (1<<3),
675 	RFPROC		= (1<<4),
676 	RFMEM		= (1<<5),
677 	RFNOWAIT	= (1<<6),
678 /*	RFCNAMEG	= (1<<10), */
679 /*	RFCENVG		= (1<<11), */
680 	RFCFDG		= (1<<12),
681 /*	RFREND		= (1<<13), */
682 /*	RFNOMNT		= (1<<14) */
683 };
684 
685 extern int		ffork(int, void(*)(void*), void*);
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 } Dir;
711 
712 /* keep /sys/src/ape/lib/ap/plan9/sys9.h in sync with this -rsc */
713 typedef
714 struct Waitmsg
715 {
716 	int pid;	/* of loved one */
717 	ulong time[3];	/* of loved one & descendants */
718 	char	*msg;
719 } Waitmsg;
720 
721 typedef
722 struct IOchunk
723 {
724 	void	*addr;
725 	ulong	len;
726 } IOchunk;
727 
728 extern	void	_exits(char*);
729 
730 extern	void	abort(void);
731 /* extern	int	access(char*, int); <unistd.h> */
732 extern	long	p9alarm(ulong);
733 extern	int	await(char*, int);
734 /* extern	int	bind(char*, char*, int); give up */
735 /* extern	int	brk(void*); <unistd.h> */
736 /* extern	int	chdir(char*); <unistd.h> */
737 extern	int	close(int);
738 extern	int	create(char*, int, ulong);
739 extern	int	p9dup(int, int);
740 extern	int	errstr(char*, uint);
741 extern	int	p9exec(char*, char*[]);
742 /* extern	int	execl(char*, ...); <unistd.h> */
743 /* extern	int	fork(void); <unistd.h> */
744 extern	int	p9rfork(int);
745 /* not implemented 
746 extern	int	fauth(int, char*);
747 extern	int	fstat(int, uchar*, int);
748 extern	int	fwstat(int, uchar*, int);
749 extern	int	fversion(int, int, char*, int);
750 extern	int	mount(int, int, char*, int, char*);
751 extern	int	unmount(char*, char*);
752 */
753 extern	int	noted(int);
754 extern	int	notify(void(*)(void*, char*));
755 /* extern	int	open(char*, int); <unistd.h> */
756 extern	int	fd2path(int, char*, int);
757 extern	int	pipe(int*);
758 /* 
759  * use defs from <unistd.h>
760 extern	long	pread(int, void*, long, vlong);
761 extern	long	preadv(int, IOchunk*, int, vlong);
762 extern	long	pwrite(int, void*, long, vlong);
763 extern	long	pwritev(int, IOchunk*, int, vlong);
764 extern	long	read(int, void*, long);
765  */
766 extern	long	readn(int, void*, long);
767 /* extern	long	readv(int, IOchunk*, int); <unistd.h> */
768 extern	int	remove(const char*);
769 /* extern	void*	sbrk(ulong); <unistd.h> */
770 /* extern	long	oseek(int, long, int); */
771 extern	vlong	p9seek(int, vlong, int);
772 /* give up
773 extern	long	segattach(int, char*, void*, ulong);
774 extern	int	segbrk(void*, void*);
775 extern	int	segdetach(void*);
776 extern	int	segflush(void*, ulong);
777 extern	int	segfree(void*, ulong);
778 */
779 extern	int	p9sleep(long);
780 /* extern	int	stat(char*, uchar*, int); give up */
781 extern	Waitmsg*	p9wait(void);
782 extern	int	p9waitpid(void);
783 /* <unistd.h>
784 extern	long	write(int, void*, long);
785 extern	long	writev(int, IOchunk*, int);
786 */
787 /* extern	int	wstat(char*, uchar*, int); give up */
788 extern	ulong	rendezvous(ulong, ulong);
789 
790 #ifndef NOPLAN9DEFINES
791 #define alarm		p9alarm
792 #define	dup		p9dup
793 #define	exec		p9exec
794 #define	seek		p9seek
795 #define sleep		p9sleep
796 #define wait		p9wait
797 #define waitpid		p9waitpid
798 #define rfork		p9rfork
799 #endif
800 
801 extern	Dir*	dirstat(char*);
802 extern	Dir*	dirfstat(int);
803 extern	int	dirwstat(char*, Dir*);
804 extern	int	dirfwstat(int, Dir*);
805 extern	long	dirread(int, Dir**);
806 extern	void	nulldir(Dir*);
807 extern	long	dirreadall(int, Dir**);
808 /* extern	int	getpid(void); <unistd.h> */
809 /* extern	int	getppid(void); */
810 extern	void	rerrstr(char*, uint);
811 extern	char*	sysname(void);
812 extern	void	werrstr(char*, ...);
813 
814 /* external names that we don't want to step on */
815 #ifndef NOPLAN9DEFINES
816 #define main	p9main
817 #endif
818 
819 /* compiler directives on plan 9 */
820 #define	USED(x)	if(x){}else{}
821 #define	SET(x)	((x)=0)
822 
823 /* command line */
824 extern char	*argv0;
825 extern void __fixargv0(void);
826 #define	ARGBEGIN	for((argv0?0:(argv0=(__fixargv0(),*argv))),argv++,argc--;\
827 			    argv[0] && argv[0][0]=='-' && argv[0][1];\
828 			    argc--, argv++) {\
829 				char *_args, *_argt;\
830 				Rune _argc;\
831 				_args = &argv[0][1];\
832 				if(_args[0]=='-' && _args[1]==0){\
833 					argc--; argv++; break;\
834 				}\
835 				_argc = 0;\
836 				while(*_args && (_args += chartorune(&_argc, _args)))\
837 				switch(_argc)
838 #define	ARGEND		SET(_argt);USED(_argt);USED(_argc);USED(_args);}USED(argv);USED(argc);
839 #define	ARGF()		(_argt=_args, _args="",\
840 				(*_argt? _argt: argv[1]? (argc--, *++argv): 0))
841 #define	EARGF(x)	(_argt=_args, _args="",\
842 				(*_argt? _argt: argv[1]? (argc--, *++argv): ((x), abort(), (char*)0)))
843 
844 #define	ARGC()		_argc
845 
846 #if defined(__cplusplus)
847 }
848 #endif
849 #endif	/* _LIB9_H_ */