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 _LIB9H_
7 #define _LIB9H_ 1
8 
9 #if defined(__cplusplus)
10 extern "C" {
11 #endif                                                                          
12 
13 #define _BSD_SOURCE 1
14 #define _SVID_SOURCE 1
15 #define _XOPEN_SOURCE 1000
16 #define _XOPEN_SOURCE_EXTENDED 1
17 #define _LARGEFILE64_SOURCE 1
18 #define _FILE_OFFSET_BITS 64
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 /* better to assume we have these and then be proved wrong */
41 #define _HAVESTGEN 1
42 #define _HAVETIMEGM 1
43 #define _HAVETMZONE 1
44 #define _HAVETMTZOFF 1
45 #define _HAVEFUTIMESAT 1
46 #define _HAVEFUTIMES 1
47 #define _HAVEGETDENTS 1
48 #define _HAVEGETDIRENTRIES 1
49 
50 typedef long p9jmp_buf[sizeof(sigjmp_buf)/sizeof(long)];
51 
52 #if defined(__linux__)
53 #	include <sys/types.h>
54 #	if defined(__USE_MISC)
55 #		undef _NEEDUSHORT
56 #		undef _NEEDUINT
57 #		undef _NEEDULONG
58 #	endif
59 #	undef _HAVESTGEN
60 #	undef _HAVETMZONE
61 #	undef _HAVETMTZOFF
62 #	undef _HAVEFUTIMESAT
63 #	undef _HAVEGETDENTS
64 #endif
65 #if defined(__sun__)
66 #	include <sys/types.h>
67 #	undef _NEEDUSHORT
68 #	undef _NEEDUINT
69 #	undef _NEEDULONG
70 #	undef _HAVESTGEN
71 #	undef _HAVETIMEGM
72 #	undef _HAVETMZONE
73 #	undef _HAVETMTZOFF
74 #	undef _HAVEFUTIMES
75 #	undef _HAVEUTIMES
76 #endif
77 #if defined(__FreeBSD__)
78 #	include <sys/types.h>
79 #	if !defined(_POSIX_SOURCE)
80 #		undef _NEEDUSHORT
81 #		undef _NEEDUINT
82 #	endif
83 #	define _HAVEDISKLABEL 1
84 #endif
85 #if defined(__APPLE__)
86 #	include <sys/types.h>
87 #	undef _NEEDUSHORT
88 #	undef _NEEDUINT
89 #endif
90 
91 typedef signed char schar;
92 typedef unsigned int u32int;
93 #ifdef _NEEDUCHAR
94 	typedef unsigned char uchar;
95 #endif
96 #ifdef _NEEDUSHORT
97 	typedef unsigned short ushort;
98 #endif
99 #ifdef _NEEDUINT
100 	typedef unsigned int uint;
101 #endif
102 #ifdef _NEEDULONG
103 	typedef unsigned long ulong;
104 #endif
105 typedef unsigned long long uvlong;
106 typedef long long vlong;
107 typedef uvlong u64int;
108 typedef uchar u8int;
109 typedef ushort u16int;
110 
111 /*
112  * Begin usual libc.h 
113  */
114 
115 #define	nil	((void*)0)
116 #define	nelem(x)	(sizeof(x)/sizeof((x)[0]))
117 
118 #ifndef offsetof
119 #define offsetof(s, m)	(ulong)(&(((s*)0)->m))
120 #endif
121 
122 /*
123  * mem routines (provided by system <string.h>)
124  *
125 extern	void*	memccpy(void*, void*, int, ulong);
126 extern	void*	memset(void*, int, ulong);
127 extern	int	memcmp(void*, void*, ulong);
128 extern	void*	memcpy(void*, void*, ulong);
129 extern	void*	memmove(void*, void*, ulong);
130 extern	void*	memchr(void*, int, ulong);
131  */
132 
133 /*
134  * string routines (provided by system <string.h>)
135  *
136 extern	char*	strcat(char*, char*);
137 extern	char*	strchr(char*, int);
138 extern	int	strcmp(char*, char*);
139 extern	char*	strcpy(char*, char*);
140  */
141 extern	char*	strecpy(char*, char*, char*);
142  /*
143 extern	char*	strdup(char*);
144 extern	char*	strncat(char*, char*, long);
145 extern	char*	strncpy(char*, char*, long);
146 extern	int	strncmp(char*, char*, long);
147 extern	char*	strpbrk(char*, char*);
148 extern	char*	strrchr(char*, int);
149 extern	char*	strtok(char*, char*);
150 extern	long	strlen(char*);
151 extern	long	strspn(char*, char*);
152 extern	long	strcspn(char*, char*);
153 extern	char*	strstr(char*, char*);
154  */
155 extern	int	cistrncmp(char*, char*, int);
156 extern	int	cistrcmp(char*, char*);
157 extern	char*	cistrstr(char*, char*);
158 extern	int	tokenize(char*, char**, int);
159 
160 /*
161 enum
162 {
163 	UTFmax		= 3,
164 	Runesync	= 0x80,
165 	Runeself	= 0x80,
166 	Runeerror	= 0x80,
167 };
168 */
169 
170 /*
171  * rune routines (provided by <utf.h>
172  *
173 extern	int	runetochar(char*, Rune*);
174 extern	int	chartorune(Rune*, char*);
175 extern	int	runelen(long);
176 extern	int	runenlen(Rune*, int);
177 extern	int	fullrune(char*, int);
178 extern	int	utflen(char*);
179 extern	int	utfnlen(char*, long);
180 extern	char*	utfrune(char*, long);
181 extern	char*	utfrrune(char*, long);
182 extern	char*	utfutf(char*, char*);
183 extern	char*	utfecpy(char*, char*, char*);
184 
185 extern	Rune*	runestrcat(Rune*, Rune*);
186 extern	Rune*	runestrchr(Rune*, Rune);
187 extern	int	runestrcmp(Rune*, Rune*);
188 extern	Rune*	runestrcpy(Rune*, Rune*);
189 extern	Rune*	runestrncpy(Rune*, Rune*, long);
190 extern	Rune*	runestrecpy(Rune*, Rune*, Rune*);
191 extern	Rune*	runestrdup(Rune*);
192 extern	Rune*	runestrncat(Rune*, Rune*, long);
193 extern	int	runestrncmp(Rune*, Rune*, long);
194 extern	Rune*	runestrrchr(Rune*, Rune);
195 extern	long	runestrlen(Rune*);
196 extern	Rune*	runestrstr(Rune*, Rune*);
197 
198 extern	Rune	tolowerrune(Rune);
199 extern	Rune	totitlerune(Rune);
200 extern	Rune	toupperrune(Rune);
201 extern	int	isalpharune(Rune);
202 extern	int	islowerrune(Rune);
203 extern	int	isspacerune(Rune);
204 extern	int	istitlerune(Rune);
205 extern	int	isupperrune(Rune);
206  */
207 
208 /*
209  * malloc (provied by system <stdlib.h>)
210  *
211 extern	void*	malloc(ulong);
212  */
213 extern	void*	mallocz(ulong, int);
214 /*
215 extern	void	free(void*);
216 extern	ulong	msize(void*);
217 extern	void*	calloc(ulong, ulong);
218 extern	void*	realloc(void*, ulong);
219  */
220 extern	void		setmalloctag(void*, ulong);
221 extern	void		setrealloctag(void*, ulong);
222 extern	ulong	getmalloctag(void*);
223 extern	ulong	getrealloctag(void*);
224 /*
225 extern	void*	malloctopoolblock(void*);
226 */
227 
228 /*
229  * print routines (provided by <fmt.h>)
230  *
231 typedef struct Fmt	Fmt;
232 struct Fmt{
233 	uchar	runes;
234 	void	*start;
235 	void	*to;
236 	void	*stop;
237 	int	(*flush)(Fmt *);
238 	void	*farg;
239 	int	nfmt;
240 	va_list	args;
241 	int	r;
242 	int	width;
243 	int	prec;
244 	ulong	flags;
245 };
246 
247 enum{
248 	FmtWidth	= 1,
249 	FmtLeft		= FmtWidth << 1,
250 	FmtPrec		= FmtLeft << 1,
251 	FmtSharp	= FmtPrec << 1,
252 	FmtSpace	= FmtSharp << 1,
253 	FmtSign		= FmtSpace << 1,
254 	FmtZero		= FmtSign << 1,
255 	FmtUnsigned	= FmtZero << 1,
256 	FmtShort	= FmtUnsigned << 1,
257 	FmtLong		= FmtShort << 1,
258 	FmtVLong	= FmtLong << 1,
259 	FmtComma	= FmtVLong << 1,
260 	FmtByte	= FmtComma << 1,
261 
262 	FmtFlag		= FmtByte << 1
263 };
264 
265 extern	int	print(char*, ...);
266 extern	char*	seprint(char*, char*, char*, ...);
267 extern	char*	vseprint(char*, char*, char*, va_list);
268 extern	int	snprint(char*, int, char*, ...);
269 extern	int	vsnprint(char*, int, char*, va_list);
270 extern	char*	smprint(char*, ...);
271 extern	char*	vsmprint(char*, va_list);
272 extern	int	sprint(char*, char*, ...);
273 extern	int	fprint(int, char*, ...);
274 extern	int	vfprint(int, char*, va_list);
275 
276 extern	int	runesprint(Rune*, char*, ...);
277 extern	int	runesnprint(Rune*, int, char*, ...);
278 extern	int	runevsnprint(Rune*, int, char*, va_list);
279 extern	Rune*	runeseprint(Rune*, Rune*, char*, ...);
280 extern	Rune*	runevseprint(Rune*, Rune*, char*, va_list);
281 extern	Rune*	runesmprint(char*, ...);
282 extern	Rune*	runevsmprint(char*, va_list);
283 
284 extern	int	fmtfdinit(Fmt*, int, char*, int);
285 extern	int	fmtfdflush(Fmt*);
286 extern	int	fmtstrinit(Fmt*);
287 extern	char*	fmtstrflush(Fmt*);
288 extern	int	runefmtstrinit(Fmt*);
289 extern	Rune*	runefmtstrflush(Fmt*);
290 
291 extern	int	fmtinstall(int, int (*)(Fmt*));
292 extern	int	dofmt(Fmt*, char*);
293 extern	int	dorfmt(Fmt*, Rune*);
294 extern	int	fmtprint(Fmt*, char*, ...);
295 extern	int	fmtvprint(Fmt*, char*, va_list);
296 extern	int	fmtrune(Fmt*, int);
297 extern	int	fmtstrcpy(Fmt*, char*);
298 extern	int	fmtrunestrcpy(Fmt*, Rune*);
299  */
300 
301 /*
302  * error string for %r
303  * supplied on per os basis, not part of fmt library
304  *
305  * (provided by lib9, but declared in fmt.h)
306  *
307 extern	int	errfmt(Fmt *f);
308  */
309 
310 /*
311  * quoted strings
312  */
313 extern	char	*unquotestrdup(char*);
314 extern	Rune	*unquoterunestrdup(Rune*);
315 extern	char	*quotestrdup(char*);
316 extern	Rune	*quoterunestrdup(Rune*);
317 /*
318  * in fmt.h
319  *
320 extern	void	quotefmtinstall(void);
321 extern	int	quotestrfmt(Fmt*);
322 extern	int	quoterunestrfmt(Fmt*);
323  */
324 #ifndef NOPLAN9DEFINES
325 #define doquote fmtdoquote
326 #endif
327 extern	int	needsrcquote(int);
328 
329 /*
330  * random number (in <stdlib.h>)
331  *
332 extern	void	srand(long);
333 extern	int	rand(void);
334  */
335 extern	int	nrand(int);
336 extern	long	lrand(void);
337 extern	long	lnrand(long);
338 extern	double	frand(void);
339 extern	ulong	truerand(void);			/* uses /dev/random */
340 extern	ulong	ntruerand(ulong);		/* uses /dev/random */
341 
342 /*
343  * math
344  */
345 extern	ulong	getfcr(void);
346 extern	void	setfsr(ulong);
347 extern	ulong	getfsr(void);
348 extern	void	setfcr(ulong);
349 extern	double	NaN(void);
350 extern	double	Inf(int);
351 extern	int	isNaN(double);
352 extern	int	isInf(double, int);
353 extern	ulong	umuldiv(ulong, ulong, ulong);
354 extern	long	muldiv(long, long, long);
355 
356 /*
357  * provided by math.h
358  *
359 extern	double	pow(double, double);
360 extern	double	atan2(double, double);
361 extern	double	fabs(double);
362 extern	double	atan(double);
363 extern	double	log(double);
364 extern	double	log10(double);
365 extern	double	exp(double);
366 extern	double	floor(double);
367 extern	double	ceil(double);
368 extern	double	hypot(double, double);
369 extern	double	sin(double);
370 extern	double	cos(double);
371 extern	double	tan(double);
372 extern	double	asin(double);
373 extern	double	acos(double);
374 extern	double	sinh(double);
375 extern	double	cosh(double);
376 extern	double	tanh(double);
377 extern	double	sqrt(double);
378 extern	double	fmod(double, double);
379 #define	HUGE	3.4028234e38
380 #define	PIO2	1.570796326794896619231e0
381 #define	PI	(PIO2+PIO2)
382  */
383 #define PI	M_PI
384 #define	PIO2	M_PI_2
385 
386 /*
387  * Time-of-day
388  */
389 
390 typedef
391 struct Tm
392 {
393 	int	sec;
394 	int	min;
395 	int	hour;
396 	int	mday;
397 	int	mon;
398 	int	year;
399 	int	wday;
400 	int	yday;
401 	char	zone[4];
402 	int	tzoff;
403 } Tm;
404 
405 extern	Tm*	p9gmtime(long);
406 extern	Tm*	p9localtime(long);
407 extern	char*	p9asctime(Tm*);
408 extern	char*	p9ctime(long);
409 extern	double	p9cputime(void);
410 extern	long	p9times(long*);
411 extern	long	p9tm2sec(Tm*);
412 extern	vlong	p9nsec(void);
413 
414 #ifndef NOPLAN9DEFINES
415 #define	gmtime		p9gmtime
416 #define	localtime	p9localtime
417 #define	asctime		p9asctime
418 #define	ctime		p9ctime
419 #define	cputime		p9cputime
420 #define	times		p9times
421 #define	tm2sec		p9tm2sec
422 #define	nsec		p9nsec
423 #endif
424 
425 /*
426  * one-of-a-kind
427  */
428 enum
429 {
430 	PNPROC		= 1,
431 	PNGROUP		= 2,
432 };
433 
434 /* extern	int	abs(int); <stdlib.h> */
435 extern	int	atexit(void(*)(void));
436 extern	void	atexitdont(void(*)(void));
437 extern	int	atnotify(int(*)(void*, char*), int);
438 /* 
439  * <stdlib.h>
440 extern	double	atof(char*); <stdlib.h>
441 extern	int	atoi(char*);
442 extern	long	atol(char*);
443  */
444 extern	vlong	atoll(const char*);
445 extern	double	charstod(int(*)(void*), void*);
446 extern	char*	cleanname(char*);
447 extern	int	p9decrypt(void*, void*, int);
448 extern	int	p9encrypt(void*, void*, int);
449 extern	int	dec64(uchar*, int, char*, int);
450 extern	int	enc64(char*, int, uchar*, int);
451 extern	int	dec32(uchar*, int, char*, int);
452 extern	int	enc32(char*, int, uchar*, int);
453 extern	int	dec16(uchar*, int, char*, int);
454 extern	int	enc16(char*, int, uchar*, int);
455 extern	int	encodefmt(Fmt*);
456 extern	int	dirmodefmt(Fmt*);
457 extern	void	exits(char*);
458 extern	double	frexp(double, int*);
459 extern	ulong	getcallerpc(void*);
460 extern	char*	p9getenv(char*);
461 extern	int	getfields(char*, char**, int, int, char*);
462 extern	int	gettokens(char *, char **, int, char *);
463 extern	char*	getuser(void);
464 extern	char*	p9getwd(char*, int);
465 extern	int	iounit(int);
466 /* extern	long	labs(long); <math.h> */
467 /* extern	double	ldexp(double, int); <math.h> */
468 extern	void	p9longjmp(p9jmp_buf, int);
469 extern	char*	mktemp(char*);
470 /* extern	double	modf(double, double*); <math.h> */
471 extern	int	netcrypt(void*, void*);
472 extern	void	p9notejmp(void*, p9jmp_buf, int);
473 extern	void	perror(const char*);
474 extern	int	postnote(int, int, char *);
475 extern	double	pow10(int);
476 /* extern	int	putenv(char*, char*); <stdlib.h. */
477 /* extern	void	qsort(void*, long, long, int (*)(void*, void*)); <stdlib.h> */
478 extern	int	p9setjmp(p9jmp_buf);
479 /*
480  * <stdlib.h>
481 extern	double	strtod(char*, char**);
482 extern	long	strtol(char*, char**, int);
483 extern	ulong	strtoul(char*, char**, int);
484 extern	vlong	strtoll(char*, char**, int);
485 extern	uvlong	strtoull(char*, char**, int);
486  */
487 extern	void	sysfatal(char*, ...);
488 extern	void	syslog(int, char*, char*, ...);
489 extern	long	time(long*);
490 /* extern	int	tolower(int); <ctype.h> */
491 /* extern	int	toupper(int); <ctype.h> */
492 #ifndef NOPLAN9DEFINES
493 #define getenv		p9getenv
494 #define	getwd		p9getwd
495 #define	longjmp		p9longjmp
496 #undef  setjmp
497 #define setjmp		p9setjmp
498 #define notejmp		p9notejmp
499 #define jmp_buf		p9jmp_buf
500 #endif
501 
502 /*
503  *  synchronization
504  */
505 typedef
506 struct Lock {
507 	int	val;
508 } Lock;
509 
510 extern int	_tas(int*);
511 
512 extern	void	lock(Lock*);
513 extern	void	unlock(Lock*);
514 extern	int	canlock(Lock*);
515 
516 typedef struct QLp QLp;
517 struct QLp
518 {
519 	int	inuse;
520 	QLp	*next;
521 	char	state;
522 };
523 
524 typedef
525 struct QLock
526 {
527 	Lock	lock;
528 	int	locked;
529 	QLp	*head;
530 	QLp 	*tail;
531 } QLock;
532 
533 extern	void	qlock(QLock*);
534 extern	void	qunlock(QLock*);
535 extern	int	canqlock(QLock*);
536 extern	void	_qlockinit(ulong (*)(ulong, ulong));	/* called only by the thread library */
537 
538 typedef
539 struct RWLock
540 {
541 	Lock	lock;
542 	int	readers;	/* number of readers */
543 	int	writer;		/* number of writers */
544 	QLp	*head;		/* list of waiting processes */
545 	QLp	*tail;
546 } RWLock;
547 
548 extern	void	rlock(RWLock*);
549 extern	void	runlock(RWLock*);
550 extern	int		canrlock(RWLock*);
551 extern	void	wlock(RWLock*);
552 extern	void	wunlock(RWLock*);
553 extern	int		canwlock(RWLock*);
554 
555 typedef
556 struct Rendez
557 {
558 	QLock *l;
559 	QLp	*head;
560 	QLp	*tail;
561 } Rendez;
562 
563 extern	void	rsleep(Rendez*);	/* unlocks r->l, sleeps, locks r->l again */
564 extern	int	rwakeup(Rendez*);
565 extern	int	rwakeupall(Rendez*);
566 extern	void**	privalloc(void);
567 extern	void	privfree(void**);
568 
569 /*
570  *  network dialing
571  */
572 #define NETPATHLEN 40
573 extern	int	p9accept(int, char*);
574 extern	int	p9announce(char*, char*);
575 extern	int	p9dial(char*, char*, char*, int*);
576 extern	void	p9setnetmtpt(char*, int, char*);
577 extern	int	p9hangup(int);
578 extern	int	p9listen(char*, char*);
579 extern	char*	p9netmkaddr(char*, char*, char*);
580 extern	int	p9reject(int, char*, char*);
581 
582 #ifndef NOPLAN9DEFINES
583 #define	accept		p9accept
584 #define	announce	p9announce
585 #define	dial		p9dial
586 #define	setnetmtpt	p9setnetmtpt
587 #define	hangup		p9hangup
588 #define	listen		p9listen
589 #define	netmkaddr	p9netmkaddr
590 #define	reject		p9reject
591 #endif
592 
593 /*
594  *  encryption
595  */
596 extern	int	pushssl(int, char*, char*, char*, int*);
597 extern	int	pushtls(int, char*, char*, int, char*, char*);
598 
599 /*
600  *  network services
601  */
602 typedef struct NetConnInfo NetConnInfo;
603 struct NetConnInfo
604 {
605 	char	*dir;		/* connection directory */
606 	char	*root;		/* network root */
607 	char	*spec;		/* binding spec */
608 	char	*lsys;		/* local system */
609 	char	*lserv;		/* local service */
610 	char	*rsys;		/* remote system */
611 	char	*rserv;		/* remote service */
612 };
613 extern	NetConnInfo*	getnetconninfo(char*, int);
614 extern	void		freenetconninfo(NetConnInfo*);
615 
616 /*
617  * system calls
618  *
619  */
620 #define	STATMAX	65535U	/* max length of machine-independent stat structure */
621 #define	DIRMAX	(sizeof(Dir)+STATMAX)	/* max length of Dir structure */
622 #define	ERRMAX	128	/* max length of error string */
623 
624 #define	MORDER	0x0003	/* mask for bits defining order of mounting */
625 #define	MREPL	0x0000	/* mount replaces object */
626 #define	MBEFORE	0x0001	/* mount goes before others in union directory */
627 #define	MAFTER	0x0002	/* mount goes after others in union directory */
628 #define	MCREATE	0x0004	/* permit creation in mounted directory */
629 #define	MCACHE	0x0010	/* cache some data */
630 #define	MMASK	0x0017	/* all bits on */
631 
632 #define	OREAD	0	/* open for read */
633 #define	OWRITE	1	/* write */
634 #define	ORDWR	2	/* read and write */
635 #define	OEXEC	3	/* execute, == read but check execute permission */
636 #define	OTRUNC	16	/* or'ed in (except for exec), truncate file first */
637 #define	OCEXEC	32	/* or'ed in, close on exec */
638 #define	ORCLOSE	64	/* or'ed in, remove on close */
639 #define	OEXCL	0x1000	/* or'ed in, exclusive use (create only) */
640 
641 #define	AEXIST	0	/* accessible: exists */
642 #define	AEXEC	1	/* execute access */
643 #define	AWRITE	2	/* write access */
644 #define	AREAD	4	/* read access */
645 
646 /* Segattch */
647 #define	SG_RONLY	0040	/* read only */
648 #define	SG_CEXEC	0100	/* detach on exec */
649 
650 #define	NCONT	0	/* continue after note */
651 #define	NDFLT	1	/* terminate after note */
652 #define	NSAVE	2	/* clear note but hold state */
653 #define	NRSTR	3	/* restore saved state */
654 
655 /* bits in Qid.type */
656 #define QTDIR		0x80		/* type bit for directories */
657 #define QTAPPEND	0x40		/* type bit for append only files */
658 #define QTEXCL		0x20		/* type bit for exclusive use files */
659 #define QTMOUNT		0x10		/* type bit for mounted channel */
660 #define QTAUTH		0x08		/* type bit for authentication file */
661 #define QTFILE		0x00		/* plain file */
662 
663 /* bits in Dir.mode */
664 #define DMDIR		0x80000000	/* mode bit for directories */
665 #define DMAPPEND	0x40000000	/* mode bit for append only files */
666 #define DMEXCL		0x20000000	/* mode bit for exclusive use files */
667 #define DMMOUNT		0x10000000	/* mode bit for mounted channel */
668 #define DMAUTH		0x08000000	/* mode bit for authentication file */
669 #define DMREAD		0x4		/* mode bit for read permission */
670 #define DMWRITE		0x2		/* mode bit for write permission */
671 #define DMEXEC		0x1		/* mode bit for execute permission */
672 
673 #if defined(__FreeBSD__)
674 #undef RFFDG
675 #undef RFNOTEG
676 #undef RFPROC
677 #undef RFMEM
678 #undef RFNOWAIT
679 #undef RFCFDG
680 #endif
681 
682 enum
683 {
684 /*	RFNAMEG		= (1<<0), */
685 /*	RFENVG		= (1<<1), */
686 	RFFDG		= (1<<2),
687 	RFNOTEG		= (1<<3),
688 	RFPROC		= (1<<4),
689 	RFMEM		= (1<<5),
690 	RFNOWAIT	= (1<<6),
691 /*	RFCNAMEG	= (1<<10), */
692 /*	RFCENVG		= (1<<11), */
693 	RFCFDG		= (1<<12),
694 /*	RFREND		= (1<<13), */
695 /*	RFNOMNT		= (1<<14) */
696 };
697 
698 extern int		ffork(int, void(*)(void*), void*);
699 
700 typedef
701 struct Qid
702 {
703 	uvlong	path;
704 	ulong	vers;
705 	uchar	type;
706 } Qid;
707 
708 typedef
709 struct Dir {
710 	/* system-modified data */
711 	ushort	type;	/* server type */
712 	uint	dev;	/* server subtype */
713 	/* file data */
714 	Qid	qid;	/* unique id from server */
715 	ulong	mode;	/* permissions */
716 	ulong	atime;	/* last read time */
717 	ulong	mtime;	/* last write time */
718 	vlong	length;	/* file length */
719 	char	*name;	/* last element of path */
720 	char	*uid;	/* owner name */
721 	char	*gid;	/* group name */
722 	char	*muid;	/* last modifier name */
723 } Dir;
724 
725 /* keep /sys/src/ape/lib/ap/plan9/sys9.h in sync with this -rsc */
726 typedef
727 struct Waitmsg
728 {
729 	int pid;	/* of loved one */
730 	ulong time[3];	/* of loved one & descendants */
731 	char	*msg;
732 } Waitmsg;
733 
734 typedef
735 struct IOchunk
736 {
737 	void	*addr;
738 	ulong	len;
739 } IOchunk;
740 
741 extern	void	_exits(char*);
742 
743 extern	void	abort(void);
744 /* extern	int	access(char*, int); <unistd.h> */
745 extern	long	p9alarm(ulong);
746 extern	int	await(char*, int);
747 /* extern	int	bind(char*, char*, int); give up */
748 /* extern	int	brk(void*); <unistd.h> */
749 /* extern	int	chdir(char*); <unistd.h> */
750 extern	int	close(int);
751 extern	int	create(char*, int, ulong);
752 extern	int	p9dup(int, int);
753 extern	int	errstr(char*, uint);
754 extern	int	p9exec(char*, char*[]);
755 /* extern	int	execl(char*, ...); <unistd.h> */
756 /* extern	int	fork(void); <unistd.h> */
757 extern	int	p9rfork(int);
758 /* not implemented 
759 extern	int	fauth(int, char*);
760 extern	int	fstat(int, uchar*, int);
761 extern	int	fwstat(int, uchar*, int);
762 extern	int	fversion(int, int, char*, int);
763 extern	int	mount(int, int, char*, int, char*);
764 extern	int	unmount(char*, char*);
765 */
766 extern	int	noted(int);
767 extern	int	notify(void(*)(void*, char*));
768 /* extern	int	open(char*, int); <unistd.h> */
769 extern	int	fd2path(int, char*, int);
770 extern	int	pipe(int*);
771 /* 
772  * use defs from <unistd.h>
773 extern	long	pread(int, void*, long, vlong);
774 extern	long	preadv(int, IOchunk*, int, vlong);
775 extern	long	pwrite(int, void*, long, vlong);
776 extern	long	pwritev(int, IOchunk*, int, vlong);
777 extern	long	read(int, void*, long);
778  */
779 extern	long	readn(int, void*, long);
780 /* extern	long	readv(int, IOchunk*, int); <unistd.h> */
781 extern	int	remove(const char*);
782 /* extern	void*	sbrk(ulong); <unistd.h> */
783 /* extern	long	oseek(int, long, int); */
784 extern	vlong	p9seek(int, vlong, int);
785 /* give up
786 extern	long	segattach(int, char*, void*, ulong);
787 extern	int	segbrk(void*, void*);
788 extern	int	segdetach(void*);
789 extern	int	segflush(void*, ulong);
790 extern	int	segfree(void*, ulong);
791 */
792 extern	int	p9sleep(long);
793 /* extern	int	stat(char*, uchar*, int); give up */
794 extern	Waitmsg*	p9wait(void);
795 extern	int	p9waitpid(void);
796 /* <unistd.h>
797 extern	long	write(int, void*, long);
798 extern	long	writev(int, IOchunk*, int);
799 */
800 /* extern	int	wstat(char*, uchar*, int); give up */
801 extern	ulong	rendezvous(ulong, ulong);
802 
803 #ifndef NOPLAN9DEFINES
804 #define alarm		p9alarm
805 #define	dup		p9dup
806 #define	exec		p9exec
807 #define	seek		p9seek
808 #define sleep		p9sleep
809 #define wait		p9wait
810 #define waitpid		p9waitpid
811 #define rfork		p9rfork
812 #endif
813 
814 extern	Dir*	dirstat(char*);
815 extern	Dir*	dirfstat(int);
816 extern	int	dirwstat(char*, Dir*);
817 extern	int	dirfwstat(int, Dir*);
818 extern	long	dirread(int, Dir**);
819 extern	void	nulldir(Dir*);
820 extern	long	dirreadall(int, Dir**);
821 /* extern	int	getpid(void); <unistd.h> */
822 /* extern	int	getppid(void); */
823 extern	void	rerrstr(char*, uint);
824 extern	char*	sysname(void);
825 extern	void	werrstr(char*, ...);
826 
827 /* external names that we don't want to step on */
828 #ifndef NOPLAN9DEFINES
829 #define main	p9main
830 #endif
831 
832 /* compiler directives on plan 9 */
833 #define	USED(x)	if(x){}else{}
834 #define	SET(x)	((x)=0)
835 
836 /* command line */
837 extern char	*argv0;
838 extern void __fixargv0(void);
839 #define	ARGBEGIN	for((argv0?0:(argv0=(__fixargv0(),*argv))),argv++,argc--;\
840 			    argv[0] && argv[0][0]=='-' && argv[0][1];\
841 			    argc--, argv++) {\
842 				char *_args, *_argt;\
843 				Rune _argc;\
844 				_args = &argv[0][1];\
845 				if(_args[0]=='-' && _args[1]==0){\
846 					argc--; argv++; break;\
847 				}\
848 				_argc = 0;\
849 				while(*_args && (_args += chartorune(&_argc, _args)))\
850 				switch(_argc)
851 #define	ARGEND		SET(_argt);USED(_argt);USED(_argc);USED(_args);}USED(argv);USED(argc);
852 #define	ARGF()		(_argt=_args, _args="",\
853 				(*_argt? _argt: argv[1]? (argc--, *++argv): 0))
854 #define	EARGF(x)	(_argt=_args, _args="",\
855 				(*_argt? _argt: argv[1]? (argc--, *++argv): ((x), abort(), (char*)0)))
856 
857 #define	ARGC()		_argc
858 
859 #if defined(__cplusplus)
860 }
861 #endif
862 
863 #endif	/* _LIB9H_ */