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