1 #pragma lib "libc.a" 2 #pragma src "/sys/src/libc" 3 4 #define nelem(x) (sizeof(x)/sizeof((x)[0])) 5 #define offsetof(s, m) (ulong)(&(((s*)0)->m)) 6 #define assert(x) if(x){}else _assert("x") 7 8 /* 9 * mem routines 10 */ 11 extern void* memccpy(void*, void*, int, ulong); 12 extern void* memset(void*, int, ulong); 13 extern int memcmp(void*, void*, ulong); 14 extern void* memcpy(void*, void*, ulong); 15 extern void* memmove(void*, void*, ulong); 16 extern void* memchr(void*, int, ulong); 17 18 /* 19 * string routines 20 */ 21 extern char* strcat(char*, char*); 22 extern char* strchr(char*, int); 23 extern int strcmp(char*, char*); 24 extern char* strcpy(char*, char*); 25 extern char* strecpy(char*, char*, char*); 26 extern char* strdup(char*); 27 extern char* strncat(char*, char*, long); 28 extern char* strncpy(char*, char*, long); 29 extern int strncmp(char*, char*, long); 30 extern char* strpbrk(char*, char*); 31 extern char* strrchr(char*, int); 32 extern char* strtok(char*, char*); 33 extern long strlen(char*); 34 extern long strspn(char*, char*); 35 extern long strcspn(char*, char*); 36 extern char* strstr(char*, char*); 37 extern int cistrncmp(char*, char*, int); 38 extern int cistrcmp(char*, char*); 39 extern char* cistrstr(char*, char*); 40 extern int tokenize(char*, char**, int); 41 42 enum 43 { 44 UTFmax = 3, /* maximum bytes per rune */ 45 Runesync = 0x80, /* cannot represent part of a UTF sequence (<) */ 46 Runeself = 0x80, /* rune and UTF sequences are the same (<) */ 47 Runeerror = 0xFFFD, /* decoding error in UTF */ 48 }; 49 50 /* 51 * rune routines 52 */ 53 extern int runetochar(char*, Rune*); 54 extern int chartorune(Rune*, char*); 55 extern int runelen(long); 56 extern int runenlen(Rune*, int); 57 extern int fullrune(char*, int); 58 extern int utflen(char*); 59 extern int utfnlen(char*, long); 60 extern char* utfrune(char*, long); 61 extern char* utfrrune(char*, long); 62 extern char* utfutf(char*, char*); 63 extern char* utfecpy(char*, char*, char*); 64 65 extern Rune* runestrcat(Rune*, Rune*); 66 extern Rune* runestrchr(Rune*, Rune); 67 extern int runestrcmp(Rune*, Rune*); 68 extern Rune* runestrcpy(Rune*, Rune*); 69 extern Rune* runestrncpy(Rune*, Rune*, long); 70 extern Rune* runestrecpy(Rune*, Rune*, Rune*); 71 extern Rune* runestrdup(Rune*); 72 extern Rune* runestrncat(Rune*, Rune*, long); 73 extern int runestrncmp(Rune*, Rune*, long); 74 extern Rune* runestrrchr(Rune*, Rune); 75 extern long runestrlen(Rune*); 76 extern Rune* runestrstr(Rune*, Rune*); 77 78 extern Rune tolowerrune(Rune); 79 extern Rune totitlerune(Rune); 80 extern Rune toupperrune(Rune); 81 extern int isalpharune(Rune); 82 extern int islowerrune(Rune); 83 extern int isspacerune(Rune); 84 extern int istitlerune(Rune); 85 extern int isupperrune(Rune); 86 extern int isdigitrune(Rune); 87 88 /* 89 * malloc 90 */ 91 extern void* malloc(ulong); 92 extern void* mallocz(ulong, int); 93 extern void free(void*); 94 extern ulong msize(void*); 95 extern void* mallocalign(ulong, ulong, long, ulong); 96 extern void* calloc(ulong, ulong); 97 extern void* realloc(void*, ulong); 98 extern void setmalloctag(void*, ulong); 99 extern void setrealloctag(void*, ulong); 100 extern ulong getmalloctag(void*); 101 extern ulong getrealloctag(void*); 102 extern void* malloctopoolblock(void*); 103 104 /* 105 * print routines 106 */ 107 typedef struct Fmt Fmt; 108 struct Fmt{ 109 uchar runes; /* output buffer is runes or chars? */ 110 void *start; /* of buffer */ 111 void *to; /* current place in the buffer */ 112 void *stop; /* end of the buffer; overwritten if flush fails */ 113 int (*flush)(Fmt *); /* called when to == stop */ 114 void *farg; /* to make flush a closure */ 115 int nfmt; /* num chars formatted so far */ 116 va_list args; /* args passed to dofmt */ 117 int r; /* % format Rune */ 118 int width; 119 int prec; 120 ulong flags; 121 }; 122 123 enum{ 124 FmtWidth = 1, 125 FmtLeft = FmtWidth << 1, 126 FmtPrec = FmtLeft << 1, 127 FmtSharp = FmtPrec << 1, 128 FmtSpace = FmtSharp << 1, 129 FmtSign = FmtSpace << 1, 130 FmtZero = FmtSign << 1, 131 FmtUnsigned = FmtZero << 1, 132 FmtShort = FmtUnsigned << 1, 133 FmtLong = FmtShort << 1, 134 FmtVLong = FmtLong << 1, 135 FmtComma = FmtVLong << 1, 136 FmtByte = FmtComma << 1, 137 138 FmtFlag = FmtByte << 1 139 }; 140 141 extern int print(char*, ...); 142 extern char* seprint(char*, char*, char*, ...); 143 extern char* vseprint(char*, char*, char*, va_list); 144 extern int snprint(char*, int, char*, ...); 145 extern int vsnprint(char*, int, char*, va_list); 146 extern char* smprint(char*, ...); 147 extern char* vsmprint(char*, va_list); 148 extern int sprint(char*, char*, ...); 149 extern int fprint(int, char*, ...); 150 extern int vfprint(int, char*, va_list); 151 152 extern int runesprint(Rune*, char*, ...); 153 extern int runesnprint(Rune*, int, char*, ...); 154 extern int runevsnprint(Rune*, int, char*, va_list); 155 extern Rune* runeseprint(Rune*, Rune*, char*, ...); 156 extern Rune* runevseprint(Rune*, Rune*, char*, va_list); 157 extern Rune* runesmprint(char*, ...); 158 extern Rune* runevsmprint(char*, va_list); 159 160 extern int fmtfdinit(Fmt*, int, char*, int); 161 extern int fmtfdflush(Fmt*); 162 extern int fmtstrinit(Fmt*); 163 extern char* fmtstrflush(Fmt*); 164 extern int runefmtstrinit(Fmt*); 165 extern Rune* runefmtstrflush(Fmt*); 166 167 #pragma varargck argpos fmtprint 2 168 #pragma varargck argpos fprint 2 169 #pragma varargck argpos print 1 170 #pragma varargck argpos runeseprint 3 171 #pragma varargck argpos runesmprint 1 172 #pragma varargck argpos runesnprint 3 173 #pragma varargck argpos runesprint 2 174 #pragma varargck argpos seprint 3 175 #pragma varargck argpos smprint 1 176 #pragma varargck argpos snprint 3 177 #pragma varargck argpos sprint 2 178 179 #pragma varargck type "lld" vlong 180 #pragma varargck type "llo" vlong 181 #pragma varargck type "llx" vlong 182 #pragma varargck type "llb" vlong 183 #pragma varargck type "lld" uvlong 184 #pragma varargck type "llo" uvlong 185 #pragma varargck type "llx" uvlong 186 #pragma varargck type "llb" uvlong 187 #pragma varargck type "ld" long 188 #pragma varargck type "lo" long 189 #pragma varargck type "lx" long 190 #pragma varargck type "lb" long 191 #pragma varargck type "ld" ulong 192 #pragma varargck type "lo" ulong 193 #pragma varargck type "lx" ulong 194 #pragma varargck type "lb" ulong 195 #pragma varargck type "d" int 196 #pragma varargck type "o" int 197 #pragma varargck type "x" int 198 #pragma varargck type "c" int 199 #pragma varargck type "C" int 200 #pragma varargck type "b" int 201 #pragma varargck type "d" uint 202 #pragma varargck type "x" uint 203 #pragma varargck type "c" uint 204 #pragma varargck type "C" uint 205 #pragma varargck type "b" uint 206 #pragma varargck type "f" double 207 #pragma varargck type "e" double 208 #pragma varargck type "g" double 209 #pragma varargck type "s" char* 210 #pragma varargck type "q" char* 211 #pragma varargck type "S" Rune* 212 #pragma varargck type "Q" Rune* 213 #pragma varargck type "r" void 214 #pragma varargck type "%" void 215 #pragma varargck type "n" int* 216 #pragma varargck type "p" uintptr 217 #pragma varargck type "p" void* 218 #pragma varargck flag ',' 219 #pragma varargck flag ' ' 220 #pragma varargck flag 'h' 221 #pragma varargck type "<" void* 222 #pragma varargck type "[" void* 223 #pragma varargck type "H" void* 224 #pragma varargck type "lH" void* 225 226 extern int fmtinstall(int, int (*)(Fmt*)); 227 extern int dofmt(Fmt*, char*); 228 extern int dorfmt(Fmt*, Rune*); 229 extern int fmtprint(Fmt*, char*, ...); 230 extern int fmtvprint(Fmt*, char*, va_list); 231 extern int fmtrune(Fmt*, int); 232 extern int fmtstrcpy(Fmt*, char*); 233 extern int fmtrunestrcpy(Fmt*, Rune*); 234 /* 235 * error string for %r 236 * supplied on per os basis, not part of fmt library 237 */ 238 extern int errfmt(Fmt *f); 239 240 /* 241 * quoted strings 242 */ 243 extern char *unquotestrdup(char*); 244 extern Rune *unquoterunestrdup(Rune*); 245 extern char *quotestrdup(char*); 246 extern Rune *quoterunestrdup(Rune*); 247 extern int quotestrfmt(Fmt*); 248 extern int quoterunestrfmt(Fmt*); 249 extern void quotefmtinstall(void); 250 extern int (*doquote)(int); 251 extern int needsrcquote(int); 252 253 /* 254 * random number 255 */ 256 extern void srand(long); 257 extern int rand(void); 258 extern int nrand(int); 259 extern long lrand(void); 260 extern long lnrand(long); 261 extern double frand(void); 262 extern ulong truerand(void); /* uses /dev/random */ 263 extern ulong ntruerand(ulong); /* uses /dev/random */ 264 265 /* 266 * math 267 */ 268 extern ulong getfcr(void); 269 extern void setfsr(ulong); 270 extern ulong getfsr(void); 271 extern void setfcr(ulong); 272 extern double NaN(void); 273 extern double Inf(int); 274 extern int isNaN(double); 275 extern int isInf(double, int); 276 extern ulong umuldiv(ulong, ulong, ulong); 277 extern long muldiv(long, long, long); 278 279 extern double pow(double, double); 280 extern double atan2(double, double); 281 extern double fabs(double); 282 extern double atan(double); 283 extern double log(double); 284 extern double log10(double); 285 extern double exp(double); 286 extern double floor(double); 287 extern double ceil(double); 288 extern double hypot(double, double); 289 extern double sin(double); 290 extern double cos(double); 291 extern double tan(double); 292 extern double asin(double); 293 extern double acos(double); 294 extern double sinh(double); 295 extern double cosh(double); 296 extern double tanh(double); 297 extern double sqrt(double); 298 extern double fmod(double, double); 299 300 #define HUGE 3.4028234e38 301 #define PIO2 1.570796326794896619231e0 302 #define PI (PIO2+PIO2) 303 304 /* 305 * Time-of-day 306 */ 307 308 typedef 309 struct Tm 310 { 311 int sec; 312 int min; 313 int hour; 314 int mday; 315 int mon; 316 int year; 317 int wday; 318 int yday; 319 char zone[4]; 320 int tzoff; 321 } Tm; 322 323 extern Tm* gmtime(long); 324 extern Tm* localtime(long); 325 extern char* asctime(Tm*); 326 extern char* ctime(long); 327 extern double cputime(void); 328 extern long times(long*); 329 extern long tm2sec(Tm*); 330 extern vlong nsec(void); 331 332 extern void cycles(uvlong*); /* 64-bit value of the cycle counter if there is one, 0 if there isn't */ 333 334 /* 335 * one-of-a-kind 336 */ 337 enum 338 { 339 PNPROC = 1, 340 PNGROUP = 2, 341 }; 342 343 extern void _assert(char*); 344 extern int abs(int); 345 extern int atexit(void(*)(void)); 346 extern void atexitdont(void(*)(void)); 347 extern int atnotify(int(*)(void*, char*), int); 348 extern double atof(char*); 349 extern int atoi(char*); 350 extern long atol(char*); 351 extern vlong atoll(char*); 352 extern double charstod(int(*)(void*), void*); 353 extern char* cleanname(char*); 354 extern int decrypt(void*, void*, int); 355 extern int encrypt(void*, void*, int); 356 extern int dec64(uchar*, int, char*, int); 357 extern int enc64(char*, int, uchar*, int); 358 extern int dec32(uchar*, int, char*, int); 359 extern int enc32(char*, int, uchar*, int); 360 extern int dec16(uchar*, int, char*, int); 361 extern int enc16(char*, int, uchar*, int); 362 extern int encodefmt(Fmt*); 363 extern void exits(char*); 364 extern double frexp(double, int*); 365 extern uintptr getcallerpc(void*); 366 extern char* getenv(char*); 367 extern int getfields(char*, char**, int, int, char*); 368 extern int gettokens(char *, char **, int, char *); 369 extern char* getuser(void); 370 extern char* getwd(char*, int); 371 extern int iounit(int); 372 extern long labs(long); 373 extern double ldexp(double, int); 374 extern void longjmp(jmp_buf, int); 375 extern char* mktemp(char*); 376 extern double modf(double, double*); 377 extern int netcrypt(void*, void*); 378 extern void notejmp(void*, jmp_buf, int); 379 extern void perror(char*); 380 extern int postnote(int, int, char *); 381 extern double pow10(int); 382 extern int putenv(char*, char*); 383 extern void qsort(void*, long, long, int (*)(void*, void*)); 384 extern int setjmp(jmp_buf); 385 extern double strtod(char*, char**); 386 extern long strtol(char*, char**, int); 387 extern ulong strtoul(char*, char**, int); 388 extern vlong strtoll(char*, char**, int); 389 extern uvlong strtoull(char*, char**, int); 390 extern void sysfatal(char*, ...); 391 #pragma varargck argpos sysfatal 1 392 extern void syslog(int, char*, char*, ...); 393 #pragma varargck argpos syslog 3 394 extern long time(long*); 395 extern int tolower(int); 396 extern int toupper(int); 397 398 /* 399 * profiling 400 */ 401 enum { 402 Profoff, /* No profiling */ 403 Profuser, /* Measure user time only (default) */ 404 Profkernel, /* Measure user + kernel time */ 405 Proftime, /* Measure total time */ 406 Profsample, /* Use clock interrupt to sample (default when there is no cycle counter) */ 407 }; /* what */ 408 extern void prof(void (*fn)(void*), void *arg, int entries, int what); 409 410 /* 411 * synchronization 412 */ 413 typedef 414 struct Lock { 415 int val; 416 } Lock; 417 418 extern int _tas(int*); 419 420 extern void lock(Lock*); 421 extern void unlock(Lock*); 422 extern int canlock(Lock*); 423 424 typedef struct QLp QLp; 425 struct QLp 426 { 427 int inuse; 428 QLp *next; 429 char state; 430 }; 431 432 typedef 433 struct QLock 434 { 435 Lock lock; 436 int locked; 437 QLp *head; 438 QLp *tail; 439 } QLock; 440 441 extern void qlock(QLock*); 442 extern void qunlock(QLock*); 443 extern int canqlock(QLock*); 444 extern void _qlockinit(void* (*)(void*, void*)); /* called only by the thread library */ 445 446 typedef 447 struct RWLock 448 { 449 Lock lock; 450 int readers; /* number of readers */ 451 int writer; /* number of writers */ 452 QLp *head; /* list of waiting processes */ 453 QLp *tail; 454 } RWLock; 455 456 extern void rlock(RWLock*); 457 extern void runlock(RWLock*); 458 extern int canrlock(RWLock*); 459 extern void wlock(RWLock*); 460 extern void wunlock(RWLock*); 461 extern int canwlock(RWLock*); 462 463 typedef 464 struct Rendez 465 { 466 QLock *l; 467 QLp *head; 468 QLp *tail; 469 } Rendez; 470 471 extern void rsleep(Rendez*); /* unlocks r->l, sleeps, locks r->l again */ 472 extern int rwakeup(Rendez*); 473 extern int rwakeupall(Rendez*); 474 extern void** privalloc(void); 475 extern void privfree(void**); 476 477 /* 478 * network dialing 479 */ 480 #define NETPATHLEN 40 481 extern int accept(int, char*); 482 extern int announce(char*, char*); 483 extern int dial(char*, char*, char*, int*); 484 extern void setnetmtpt(char*, int, char*); 485 extern int hangup(int); 486 extern int listen(char*, char*); 487 extern char* netmkaddr(char*, char*, char*); 488 extern int reject(int, char*, char*); 489 490 /* 491 * encryption 492 */ 493 extern int pushssl(int, char*, char*, char*, int*); 494 extern int pushtls(int, char*, char*, int, char*, char*); 495 496 /* 497 * network services 498 */ 499 typedef struct NetConnInfo NetConnInfo; 500 struct NetConnInfo 501 { 502 char *dir; /* connection directory */ 503 char *root; /* network root */ 504 char *spec; /* binding spec */ 505 char *lsys; /* local system */ 506 char *lserv; /* local service */ 507 char *rsys; /* remote system */ 508 char *rserv; /* remote service */ 509 char *laddr; /* local address */ 510 char *raddr; /* remote address */ 511 }; 512 extern NetConnInfo* getnetconninfo(char*, int); 513 extern void freenetconninfo(NetConnInfo*); 514 515 /* 516 * system calls 517 * 518 */ 519 #define STATMAX 65535U /* max length of machine-independent stat structure */ 520 #define DIRMAX (sizeof(Dir)+STATMAX) /* max length of Dir structure */ 521 #define ERRMAX 128 /* max length of error string */ 522 523 #define MORDER 0x0003 /* mask for bits defining order of mounting */ 524 #define MREPL 0x0000 /* mount replaces object */ 525 #define MBEFORE 0x0001 /* mount goes before others in union directory */ 526 #define MAFTER 0x0002 /* mount goes after others in union directory */ 527 #define MCREATE 0x0004 /* permit creation in mounted directory */ 528 #define MCACHE 0x0010 /* cache some data */ 529 #define MMASK 0x0017 /* all bits on */ 530 531 #define OREAD 0 /* open for read */ 532 #define OWRITE 1 /* write */ 533 #define ORDWR 2 /* read and write */ 534 #define OEXEC 3 /* execute, == read but check execute permission */ 535 #define OTRUNC 16 /* or'ed in (except for exec), truncate file first */ 536 #define OCEXEC 32 /* or'ed in, close on exec */ 537 #define ORCLOSE 64 /* or'ed in, remove on close */ 538 #define OEXCL 0x1000 /* or'ed in, exclusive use (create only) */ 539 540 #define AEXIST 0 /* accessible: exists */ 541 #define AEXEC 1 /* execute access */ 542 #define AWRITE 2 /* write access */ 543 #define AREAD 4 /* read access */ 544 545 /* Segattch */ 546 #define SG_RONLY 0040 /* read only */ 547 #define SG_CEXEC 0100 /* detach on exec */ 548 549 #define NCONT 0 /* continue after note */ 550 #define NDFLT 1 /* terminate after note */ 551 #define NSAVE 2 /* clear note but hold state */ 552 #define NRSTR 3 /* restore saved state */ 553 554 /* bits in Qid.type */ 555 #define QTDIR 0x80 /* type bit for directories */ 556 #define QTAPPEND 0x40 /* type bit for append only files */ 557 #define QTEXCL 0x20 /* type bit for exclusive use files */ 558 #define QTMOUNT 0x10 /* type bit for mounted channel */ 559 #define QTAUTH 0x08 /* type bit for authentication file */ 560 #define QTTMP 0x04 /* type bit for not-backed-up file */ 561 #define QTFILE 0x00 /* plain file */ 562 563 /* bits in Dir.mode */ 564 #define DMDIR 0x80000000 /* mode bit for directories */ 565 #define DMAPPEND 0x40000000 /* mode bit for append only files */ 566 #define DMEXCL 0x20000000 /* mode bit for exclusive use files */ 567 #define DMMOUNT 0x10000000 /* mode bit for mounted channel */ 568 #define DMAUTH 0x08000000 /* mode bit for authentication file */ 569 #define DMTMP 0x04000000 /* mode bit for non-backed-up files */ 570 #define DMREAD 0x4 /* mode bit for read permission */ 571 #define DMWRITE 0x2 /* mode bit for write permission */ 572 #define DMEXEC 0x1 /* mode bit for execute permission */ 573 574 /* rfork */ 575 enum 576 { 577 RFNAMEG = (1<<0), 578 RFENVG = (1<<1), 579 RFFDG = (1<<2), 580 RFNOTEG = (1<<3), 581 RFPROC = (1<<4), 582 RFMEM = (1<<5), 583 RFNOWAIT = (1<<6), 584 RFCNAMEG = (1<<10), 585 RFCENVG = (1<<11), 586 RFCFDG = (1<<12), 587 RFREND = (1<<13), 588 RFNOMNT = (1<<14) 589 }; 590 591 typedef 592 struct Qid 593 { 594 uvlong path; 595 ulong vers; 596 uchar type; 597 } Qid; 598 599 typedef 600 struct Dir { 601 /* system-modified data */ 602 ushort type; /* server type */ 603 uint dev; /* server subtype */ 604 /* file data */ 605 Qid qid; /* unique id from server */ 606 ulong mode; /* permissions */ 607 ulong atime; /* last read time */ 608 ulong mtime; /* last write time */ 609 vlong length; /* file length */ 610 char *name; /* last element of path */ 611 char *uid; /* owner name */ 612 char *gid; /* group name */ 613 char *muid; /* last modifier name */ 614 } Dir; 615 616 /* keep /sys/src/ape/lib/ap/plan9/sys9.h in sync with this -rsc */ 617 typedef 618 struct Waitmsg 619 { 620 int pid; /* of loved one */ 621 ulong time[3]; /* of loved one & descendants */ 622 char *msg; 623 } Waitmsg; 624 625 typedef 626 struct IOchunk 627 { 628 void *addr; 629 ulong len; 630 } IOchunk; 631 632 extern void _exits(char*); 633 634 extern void abort(void); 635 extern int access(char*, int); 636 extern long alarm(ulong); 637 extern int await(char*, int); 638 extern int bind(char*, char*, int); 639 extern int brk(void*); 640 extern int chdir(char*); 641 extern int close(int); 642 extern int create(char*, int, ulong); 643 extern int dup(int, int); 644 extern int errstr(char*, uint); 645 extern int exec(char*, char*[]); 646 extern int execl(char*, ...); 647 extern int fork(void); 648 extern int rfork(int); 649 extern int fauth(int, char*); 650 extern int fstat(int, uchar*, int); 651 extern int fwstat(int, uchar*, int); 652 extern int fversion(int, int, char*, int); 653 extern int mount(int, int, char*, int, char*); 654 extern int unmount(char*, char*); 655 extern int noted(int); 656 extern int notify(void(*)(void*, char*)); 657 extern int open(char*, int); 658 extern int fd2path(int, char*, int); 659 extern int pipe(int*); 660 extern long pread(int, void*, long, vlong); 661 extern long preadv(int, IOchunk*, int, vlong); 662 extern long pwrite(int, void*, long, vlong); 663 extern long pwritev(int, IOchunk*, int, vlong); 664 extern long read(int, void*, long); 665 extern long readn(int, void*, long); 666 extern long readv(int, IOchunk*, int); 667 extern int remove(char*); 668 extern void* sbrk(ulong); 669 extern long oseek(int, long, int); 670 extern vlong seek(int, vlong, int); 671 extern void* segattach(int, char*, void*, ulong); 672 extern void* segbrk(void*, void*); 673 extern int segdetach(void*); 674 extern int segflush(void*, ulong); 675 extern int segfree(void*, ulong); 676 extern int semacquire(long*, int); 677 extern long semrelease(long*, long); 678 extern int sleep(long); 679 extern int stat(char*, uchar*, int); 680 extern int tsemacquire(long*, ulong); 681 extern Waitmsg* wait(void); 682 extern int waitpid(void); 683 extern long write(int, void*, long); 684 extern long writev(int, IOchunk*, int); 685 extern int wstat(char*, uchar*, int); 686 extern void* rendezvous(void*, void*); 687 688 extern Dir* dirstat(char*); 689 extern Dir* dirfstat(int); 690 extern int dirwstat(char*, Dir*); 691 extern int dirfwstat(int, Dir*); 692 extern long dirread(int, Dir**); 693 extern void nulldir(Dir*); 694 extern long dirreadall(int, Dir**); 695 extern int getpid(void); 696 extern int getppid(void); 697 extern void rerrstr(char*, uint); 698 extern char* sysname(void); 699 extern void werrstr(char*, ...); 700 #pragma varargck argpos werrstr 1 701 702 extern char *argv0; 703 #define ARGBEGIN for((argv0||(argv0=*argv)),argv++,argc--;\ 704 argv[0] && argv[0][0]=='-' && argv[0][1];\ 705 argc--, argv++) {\ 706 char *_args, *_argt;\ 707 Rune _argc;\ 708 _args = &argv[0][1];\ 709 if(_args[0]=='-' && _args[1]==0){\ 710 argc--; argv++; break;\ 711 }\ 712 _argc = 0;\ 713 while(*_args && (_args += chartorune(&_argc, _args)))\ 714 switch(_argc) 715 #define ARGEND SET(_argt);USED(_argt,_argc,_args);}USED(argv, argc); 716 #define ARGF() (_argt=_args, _args="",\ 717 (*_argt? _argt: argv[1]? (argc--, *++argv): 0)) 718 #define EARGF(x) (_argt=_args, _args="",\ 719 (*_argt? _argt: argv[1]? (argc--, *++argv): ((x), abort(), (char*)0))) 720 721 #define ARGC() _argc 722 723 /* this is used by sbrk and brk, it's a really bad idea to redefine it */ 724 extern char end[]; 725