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