1 /* define _BSD_SOURCE to use ISO C, POSIX, and 4.3BSD things. */ 2 #define USE_PTHREADS 3 #ifndef _DEFAULT_SOURCE 4 #define _DEFAULT_SOURCE 5 #endif 6 #ifndef _BSD_SOURCE 7 #define _BSD_SOURCE 8 #endif 9 #define _XOPEN_SOURCE 500 10 #define _LARGEFILE_SOURCE 1 11 #define _LARGEFILE64_SOURCE 1 12 #define _FILE_OFFSET_BITS 64 13 #ifdef USE_PTHREADS 14 #define _REENTRANT 1 15 #endif 16 #include <features.h> 17 #include <sys/types.h> 18 #include <stdlib.h> 19 #include <stdarg.h> 20 #define sync __os_sync 21 #include <unistd.h> 22 #undef sync 23 #include <errno.h> 24 #define __NO_STRING_INLINES 25 #include <string.h> 26 #include "math.h" 27 #include <fcntl.h> 28 #include <setjmp.h> 29 #include <float.h> 30 #include <endian.h> 31 32 #define getwd infgetwd 33 34 #ifndef EMU 35 typedef struct Proc Proc; 36 #endif 37 38 /* 39 * math module dtoa 40 * #define __LITTLE_ENDIAN /usr/include/endian.h under linux 41 */ 42 43 #define nil ((void*)0) 44 45 typedef unsigned char uchar; 46 typedef signed char schar; 47 typedef unsigned int Rune; 48 typedef long long int vlong; 49 typedef unsigned long long int uvlong; 50 typedef unsigned int u32int; 51 typedef uvlong u64int; 52 53 typedef unsigned int mpdigit; /* for /sys/include/mp.h */ 54 typedef unsigned short u16int; 55 typedef unsigned char u8int; 56 typedef unsigned long uintptr; 57 58 #define USED(x) if(x){}else{} 59 #define SET(x) 60 61 #undef nelem 62 #define nelem(x) (sizeof(x)/sizeof((x)[0])) 63 #undef offsetof 64 #define offsetof(s, m) (ulong)(&(((s*)0)->m)) 65 #undef assert 66 #define assert(x) if(x){}else _assert("x") 67 68 /* 69 * most mem and string routines are declared by ANSI/POSIX files above 70 */ 71 72 extern char* strecpy(char*, char*, char*); 73 extern char* strdup(const char*); 74 extern int cistrncmp(char*, char*, int); 75 extern int cistrcmp(char*, char*); 76 extern char* cistrstr(char*, char*); 77 extern int tokenize(char*, char**, int); 78 79 enum 80 { 81 UTFmax = 4, /* maximum bytes per rune */ 82 Runesync = 0x80, /* cannot represent part of a UTF sequence (<) */ 83 Runeself = 0x80, /* rune and UTF sequences are the same (<) */ 84 Runeerror = 0xFFFD, /* decoding error in UTF */ 85 Runemax = 0x10FFFF, /* 21-bit rune */ 86 Runemask = 0x1FFFFF, /* bits used by runes (see grep) */ 87 }; 88 89 /* 90 * rune routines 91 */ 92 extern int runetochar(char*, Rune*); 93 extern int chartorune(Rune*, char*); 94 extern int runelen(long); 95 extern int runenlen(Rune*, int); 96 extern int fullrune(char*, int); 97 extern int utflen(char*); 98 extern int utfnlen(char*, long); 99 extern char* utfrune(char*, long); 100 extern char* utfrrune(char*, long); 101 extern char* utfutf(char*, char*); 102 extern char* utfecpy(char*, char*, char*); 103 104 extern Rune* runestrcat(Rune*, Rune*); 105 extern Rune* runestrchr(Rune*, Rune); 106 extern int runestrcmp(Rune*, Rune*); 107 extern Rune* runestrcpy(Rune*, Rune*); 108 extern Rune* runestrncpy(Rune*, Rune*, long); 109 extern Rune* runestrecpy(Rune*, Rune*, Rune*); 110 extern Rune* runestrdup(Rune*); 111 extern Rune* runestrncat(Rune*, Rune*, long); 112 extern int runestrncmp(Rune*, Rune*, long); 113 extern Rune* runestrrchr(Rune*, Rune); 114 extern long runestrlen(Rune*); 115 extern Rune* runestrstr(Rune*, Rune*); 116 117 extern Rune tolowerrune(Rune); 118 extern Rune totitlerune(Rune); 119 extern Rune toupperrune(Rune); 120 extern int isalpharune(Rune); 121 extern int islowerrune(Rune); 122 extern int isspacerune(Rune); 123 extern int istitlerune(Rune); 124 extern int isupperrune(Rune); 125 126 /* 127 * malloc 128 */ 129 extern void* malloc(size_t); 130 extern void* mallocz(ulong, int); 131 extern void free(void*); 132 extern ulong msize(void*); 133 extern void* calloc(size_t, size_t); 134 extern void* realloc(void*, size_t); 135 extern void setmalloctag(void*, ulong); 136 extern void setrealloctag(void*, ulong); 137 extern ulong getmalloctag(void*); 138 extern ulong getrealloctag(void*); 139 extern void* malloctopoolblock(void*); 140 141 /* 142 * print routines 143 */ 144 typedef struct Fmt Fmt; 145 struct Fmt{ 146 uchar runes; /* output buffer is runes or chars? */ 147 void *start; /* of buffer */ 148 void *to; /* current place in the buffer */ 149 void *stop; /* end of the buffer; overwritten if flush fails */ 150 int (*flush)(Fmt *); /* called when to == stop */ 151 void *farg; /* to make flush a closure */ 152 int nfmt; /* num chars formatted so far */ 153 va_list args; /* args passed to dofmt */ 154 int r; /* % format Rune */ 155 int width; 156 int prec; 157 ulong flags; 158 }; 159 160 enum{ 161 FmtWidth = 1, 162 FmtLeft = FmtWidth << 1, 163 FmtPrec = FmtLeft << 1, 164 FmtSharp = FmtPrec << 1, 165 FmtSpace = FmtSharp << 1, 166 FmtSign = FmtSpace << 1, 167 FmtZero = FmtSign << 1, 168 FmtUnsigned = FmtZero << 1, 169 FmtShort = FmtUnsigned << 1, 170 FmtLong = FmtShort << 1, 171 FmtVLong = FmtLong << 1, 172 FmtComma = FmtVLong << 1, 173 FmtByte = FmtComma << 1, 174 175 FmtFlag = FmtByte << 1 176 }; 177 178 extern int print(char*, ...); 179 extern char* seprint(char*, char*, char*, ...); 180 extern char* vseprint(char*, char*, char*, va_list); 181 extern int snprint(char*, int, char*, ...); 182 extern int vsnprint(char*, int, char*, va_list); 183 extern char* smprint(char*, ...); 184 extern char* vsmprint(char*, va_list); 185 extern int sprint(char*, char*, ...); 186 extern int fprint(int, char*, ...); 187 extern int vfprint(int, char*, va_list); 188 189 extern int runesprint(Rune*, char*, ...); 190 extern int runesnprint(Rune*, int, char*, ...); 191 extern int runevsnprint(Rune*, int, char*, va_list); 192 extern Rune* runeseprint(Rune*, Rune*, char*, ...); 193 extern Rune* runevseprint(Rune*, Rune*, char*, va_list); 194 extern Rune* runesmprint(char*, ...); 195 extern Rune* runevsmprint(char*, va_list); 196 197 extern int fmtfdinit(Fmt*, int, char*, int); 198 extern int fmtfdflush(Fmt*); 199 extern int fmtstrinit(Fmt*); 200 extern char* fmtstrflush(Fmt*); 201 extern int runefmtstrinit(Fmt*); 202 extern Rune* runefmtstrflush(Fmt*); 203 204 extern int fmtinstall(int, int (*)(Fmt*)); 205 extern int dofmt(Fmt*, char*); 206 extern int dorfmt(Fmt*, Rune*); 207 extern int fmtprint(Fmt*, char*, ...); 208 extern int fmtvprint(Fmt*, char*, va_list); 209 extern int fmtrune(Fmt*, int); 210 extern int fmtstrcpy(Fmt*, char*); 211 extern int fmtrunestrcpy(Fmt*, Rune*); 212 /* 213 * error string for %r 214 * supplied on per os basis, not part of fmt library 215 */ 216 extern int errfmt(Fmt *f); 217 218 /* 219 * quoted strings 220 */ 221 extern char *unquotestrdup(char*); 222 extern Rune *unquoterunestrdup(Rune*); 223 extern char *quotestrdup(char*); 224 extern Rune *quoterunestrdup(Rune*); 225 extern int quotestrfmt(Fmt*); 226 extern int quoterunestrfmt(Fmt*); 227 extern void quotefmtinstall(void); 228 extern int (*doquote)(int); 229 230 /* 231 * random number 232 */ 233 extern ulong truerand(void); 234 extern ulong ntruerand(ulong); 235 236 /* 237 * math 238 */ 239 extern int isNaN(double); 240 extern double NaN(void); 241 extern int isInf(double, int); 242 243 /* 244 * Time-of-day 245 */ 246 247 typedef struct Tm Tm; 248 struct Tm { 249 int sec; 250 int min; 251 int hour; 252 int mday; 253 int mon; 254 int year; 255 int wday; 256 int yday; 257 char zone[4]; 258 int tzoff; 259 }; 260 extern vlong osnsec(void); 261 #define nsec osnsec 262 263 /* 264 * one-of-a-kind 265 */ 266 extern void _assert(char*); 267 extern double charstod(int(*)(void*), void*); 268 extern char* cleanname(char*); 269 //extern uintptr getcallerpc(void*); 270 extern int getfields(char*, char**, int, int, char*); 271 extern char* getuser(void); 272 extern char* getwd(char*, int); 273 extern double ipow10(int); 274 #define pow10 infpow10 275 extern double pow10(int); 276 extern vlong strtoll(const char*, char**, int); 277 #define qsort infqsort 278 extern void qsort(void*, long, long, int (*)(void*, void*)); 279 extern uvlong strtoull(const char*, char**, int); 280 extern void sysfatal(char*, ...); 281 extern int dec64(uchar*, int, char*, int); 282 extern int enc64(char*, int, uchar*, int); 283 extern int dec32(uchar*, int, char*, int); 284 extern int enc32(char*, int, uchar*, int); 285 extern int dec16(uchar*, int, char*, int); 286 extern int enc16(char*, int, uchar*, int); 287 extern int encodefmt(Fmt*); 288 289 /* 290 * synchronization 291 */ 292 typedef 293 struct Lock { 294 int val; 295 int pid; 296 } Lock; 297 298 extern int _tas(int*); 299 300 extern void lock(Lock*); 301 extern void unlock(Lock*); 302 extern int canlock(Lock*); 303 304 typedef struct QLock QLock; 305 struct QLock 306 { 307 Lock use; /* to access Qlock structure */ 308 Proc *head; /* next process waiting for object */ 309 Proc *tail; /* last process waiting for object */ 310 int locked; /* flag */ 311 }; 312 313 extern void qlock(QLock*); 314 extern void qunlock(QLock*); 315 extern int canqlock(QLock*); 316 extern void _qlockinit(ulong (*)(ulong, ulong)); /* called only by the thread library */ 317 318 typedef 319 struct RWLock 320 { 321 Lock l; /* Lock modify lock */ 322 QLock x; /* Mutual exclusion lock */ 323 QLock k; /* Lock for waiting writers */ 324 int readers; /* Count of readers in lock */ 325 } RWLock; 326 327 extern int canrlock(RWLock*); 328 extern int canwlock(RWLock*); 329 extern void rlock(RWLock*); 330 extern void runlock(RWLock*); 331 extern void wlock(RWLock*); 332 extern void wunlock(RWLock*); 333 334 /* 335 * network dialing 336 */ 337 #define NETPATHLEN 40 338 339 /* 340 * system calls 341 * 342 */ 343 #define STATMAX 65535U /* max length of machine-independent stat structure */ 344 #define DIRMAX (sizeof(Dir)+STATMAX) /* max length of Dir structure */ 345 #define ERRMAX 128 /* max length of error string */ 346 347 #define MORDER 0x0003 /* mask for bits defining order of mounting */ 348 #define MREPL 0x0000 /* mount replaces object */ 349 #define MBEFORE 0x0001 /* mount goes before others in union directory */ 350 #define MAFTER 0x0002 /* mount goes after others in union directory */ 351 #define MCREATE 0x0004 /* permit creation in mounted directory */ 352 #define MCACHE 0x0010 /* cache some data */ 353 #define MMASK 0x0017 /* all bits on */ 354 355 #define OREAD 0 /* open for read */ 356 #define OWRITE 1 /* write */ 357 #define ORDWR 2 /* read and write */ 358 #define OEXEC 3 /* execute, == read but check execute permission */ 359 #define OTRUNC 16 /* or'ed in (except for exec), truncate file first */ 360 #define OCEXEC 32 /* or'ed in, close on exec */ 361 #define ORCLOSE 64 /* or'ed in, remove on close */ 362 #define OEXCL 0x1000 /* or'ed in, exclusive use (create only) */ 363 364 #define AEXIST 0 /* accessible: exists */ 365 #define AEXEC 1 /* execute access */ 366 #define AWRITE 2 /* write access */ 367 #define AREAD 4 /* read access */ 368 369 /* bits in Qid.type */ 370 #define QTDIR 0x80 /* type bit for directories */ 371 #define QTAPPEND 0x40 /* type bit for append only files */ 372 #define QTEXCL 0x20 /* type bit for exclusive use files */ 373 #define QTMOUNT 0x10 /* type bit for mounted channel */ 374 #define QTAUTH 0x08 /* type bit for authentication file */ 375 #define QTFILE 0x00 /* plain file */ 376 377 /* bits in Dir.mode */ 378 #define DMDIR 0x80000000 /* mode bit for directories */ 379 #define DMAPPEND 0x40000000 /* mode bit for append only files */ 380 #define DMEXCL 0x20000000 /* mode bit for exclusive use files */ 381 #define DMMOUNT 0x10000000 /* mode bit for mounted channel */ 382 #define DMAUTH 0x08000000 /* mode bit for authentication file */ 383 #define DMREAD 0x4 /* mode bit for read permission */ 384 #define DMWRITE 0x2 /* mode bit for write permission */ 385 #define DMEXEC 0x1 /* mode bit for execute permission */ 386 387 typedef 388 struct Qid 389 { 390 uvlong path; 391 ulong vers; 392 uchar type; 393 } Qid; 394 395 typedef 396 struct Dir { 397 /* system-modified data */ 398 ushort type; /* server type */ 399 uint dev; /* server subtype */ 400 /* file data */ 401 Qid qid; /* unique id from server */ 402 ulong mode; /* permissions */ 403 ulong atime; /* last read time */ 404 ulong mtime; /* last write time */ 405 vlong length; /* file length */ 406 char *name; /* last element of path */ 407 char *uid; /* owner name */ 408 char *gid; /* group name */ 409 char *muid; /* last modifier name */ 410 } Dir; 411 412 extern Dir* dirstat(char*); 413 extern Dir* dirfstat(int); 414 extern int dirwstat(char*, Dir*); 415 extern int dirfwstat(int, Dir*); 416 extern long dirread(int, Dir**); 417 extern void nulldir(Dir*); 418 extern long dirreadall(int, Dir**); 419 420 typedef 421 struct Waitmsg 422 { 423 int pid; /* of loved one */ 424 ulong time[3]; /* of loved one & descendants */ 425 char *msg; 426 } Waitmsg; 427 428 extern void _exits(char*); 429 430 extern void exits(char*); 431 extern int create(char*, int, int); 432 extern int errstr(char*, uint); 433 434 extern void perror(const char*); 435 extern long readn(int, void*, long); 436 extern int remove(const char*); 437 extern void rerrstr(char*, uint); 438 extern vlong seek(int, vlong, int); 439 extern int segflush(void*, ulong); 440 extern void werrstr(char*, ...); 441 442 extern char *argv0; 443 #define ARGBEGIN for((argv0||(argv0=*argv)),argv++,argc--;\ 444 argv[0] && argv[0][0]=='-' && argv[0][1];\ 445 argc--, argv++) {\ 446 char *_args, *_argt;\ 447 Rune _argc;\ 448 _args = &argv[0][1];\ 449 if(_args[0]=='-' && _args[1]==0){\ 450 argc--; argv++; break;\ 451 }\ 452 _argc = 0;\ 453 while(*_args && (_args += chartorune(&_argc, _args)))\ 454 switch(_argc) 455 #define ARGEND SET(_argt);USED(_argt);USED(_argc); USED(_args);}USED(argv); USED(argc); 456 #define ARGF() (_argt=_args, _args="",\ 457 (*_argt? _argt: argv[1]? (argc--, *++argv): 0)) 458 #define EARGF(x) (_argt=_args, _args="",\ 459 (*_argt? _argt: argv[1]? (argc--, *++argv): ((x), abort(), (char*)0))) 460 461 #define ARGC() _argc 462 463 /* 464 * Extensions for Inferno to basic libc.h 465 */ 466 467 #define setbinmode() 468 469 /* need the inline because the link register is not saved in a known location */ 470 static __inline uintptr getcallerpc(void* dummy) { 471 ulong lr; 472 __asm__( "mov %0, %%lr;" 473 : "=r" (lr) 474 ); 475 return lr; 476 } 477 478 479 extern void setfcr(ulong); 480 extern void setfsr(ulong); 481 extern ulong getfcr(void); 482 extern ulong getfsr(void); 483 484 /* FCR */ 485 #define FPINEX (1<<5) 486 #define FPUNFL ((1<<4)|(1<<1)) 487 #define FPOVFL (1<<3) 488 #define FPZDIV (1<<2) 489 #define FPINVAL (1<<0) 490 #define FPRNR (0<<10) 491 #define FPRZ (3<<10) 492 #define FPRPINF (2<<10) 493 #define FPRNINF (1<<10) 494 #define FPRMASK (3<<10) 495 #define FPPEXT (3<<8) 496 #define FPPSGL (0<<8) 497 #define FPPDBL (2<<8) 498 #define FPPMASK (3<<8) 499 /* FSR */ 500 #define FPAINEX FPINEX 501 #define FPAOVFL FPOVFL 502 #define FPAUNFL FPUNFL 503 #define FPAZDIV FPZDIV 504 #define FPAINVAL FPINVAL 505