1 /* $Header: /src/pub/tcsh/sh.h,v 3.108 2002/07/23 16:13:22 christos Exp $ */ 2 /* 3 * sh.h: Catch it all globals and includes file! 4 */ 5 /*- 6 * Copyright (c) 1980, 1991 The Regents of the University of California. 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 #ifndef _h_sh 34 #define _h_sh 35 36 #include "config.h" 37 38 #ifndef HAVE_QUAD 39 #ifdef __GNUC__ 40 #define HAVE_QUAD 1 41 #endif 42 #endif 43 44 #ifndef EXTERN 45 # define EXTERN extern 46 #else /* !EXTERN */ 47 # ifdef WINNT_NATIVE 48 # define IZERO = 0 49 # define IZERO_STRUCT = {0} 50 # endif /* WINNT_NATIVE */ 51 #endif /* EXTERN */ 52 53 #ifndef IZERO 54 # define IZERO 55 #endif /* IZERO */ 56 #ifndef IZERO_STRUCT 57 # define IZERO_STRUCT 58 # endif /* IZERO_STRUCT */ 59 60 #ifndef WINNT_NATIVE 61 # define INIT_ZERO 62 # define INIT_ZERO_STRUCT 63 # define force_read read 64 #endif /*!WINNT_NATIVE */ 65 /* 66 * Sanity 67 */ 68 #if defined(_POSIX_SOURCE) && !defined(POSIX) 69 # define POSIX 70 #endif 71 72 #if defined(POSIXJOBS) && !defined(BSDJOBS) 73 # define BSDJOBS 74 #endif 75 76 #if defined(POSIXSIGS) && !defined(BSDSIGS) 77 # define BSDSIGS 78 #endif 79 80 #ifdef SHORT_STRINGS 81 typedef short Char; 82 typedef unsigned short uChar; 83 # define SAVE(a) (Strsave(str2short(a))) 84 #else 85 typedef char Char; 86 typedef unsigned char uChar; 87 # define SAVE(a) (strsave(a)) 88 #endif 89 90 /* Elide unused argument warnings */ 91 #define USE(a) (void) (a) 92 /* 93 * If your compiler complains, then you can either 94 * throw it away and get gcc or, use the following define 95 * and get rid of the typedef. 96 * [The 4.2/3BSD vax compiler does not like that] 97 * Both MULTIFLOW and PCC compilers exhbit this bug. -- sterling@netcom.com 98 */ 99 #ifdef SIGVOID 100 # if (defined(vax) || defined(uts) || defined(MULTIFLOW) || defined(PCC)) && !defined(__GNUC__) 101 # define sigret_t void 102 # else /* !((vax || uts || MULTIFLOW || PCC) && !__GNUC__) */ 103 typedef void sigret_t; 104 # endif /* (vax || uts || MULTIFLOW || PCC) && !__GNUC__ */ 105 #else /* !SIGVOID */ 106 typedef int sigret_t; 107 #endif /* SIGVOID */ 108 109 /* 110 * Return true if the path is absolute 111 */ 112 #if defined(WINNT_NATIVE) || defined(__CYGWIN__) 113 # define ABSOLUTEP(p) ((p)[0] == '/' || \ 114 (Isalpha((p)[0]) && (p)[1] == ':')) 115 #else /* !WINNT_NATIVE && !__CYGWIN__ */ 116 # define ABSOLUTEP(p) (*(p) == '/') 117 #endif /* WINNT_NATIVE || __CYGWIN__ */ 118 119 /* 120 * Fundamental definitions which may vary from system to system. 121 * 122 * BUFSIZE The i/o buffering size; also limits word size 123 * MAILINTVL How often to mailcheck; more often is more expensive 124 */ 125 #ifdef BUFSIZE 126 # if BUFSIZE < 4096 127 # undef BUFSIZE 128 # define BUFSIZE 4096 /* buffer size should be no less than this */ 129 # endif 130 #else 131 # define BUFSIZE 4096 132 #endif /* BUFSIZE */ 133 134 #define FORKSLEEP 10 /* delay loop on non-interactive fork failure */ 135 #define MAILINTVL 600 /* 10 minutes */ 136 137 #ifndef INBUFSIZE 138 # define INBUFSIZE 2*BUFSIZE /* Num input characters on the command line */ 139 #endif /* INBUFSIZE */ 140 141 142 /* 143 * What our builtin echo looks like 144 */ 145 #define NONE_ECHO 0 146 #define BSD_ECHO 1 147 #define SYSV_ECHO 2 148 #define BOTH_ECHO (BSD_ECHO|SYSV_ECHO) 149 150 #ifndef ECHO_STYLE 151 # if SYSVREL > 0 152 # define ECHO_STYLE SYSV_ECHO 153 # else /* SYSVREL == 0 */ 154 # define ECHO_STYLE BSD_ECHO 155 # endif /* SYSVREL */ 156 #endif /* ECHO_STYLE */ 157 158 /* 159 * The shell moves std in/out/diag and the old std input away from units 160 * 0, 1, and 2 so that it is easy to set up these standards for invoked 161 * commands. 162 */ 163 #define FSHTTY 15 /* /dev/tty when manip pgrps */ 164 #define FSHIN 16 /* Preferred desc for shell input */ 165 #define FSHOUT 17 /* ... shell output */ 166 #define FSHDIAG 18 /* ... shell diagnostics */ 167 #define FOLDSTD 19 /* ... old std input */ 168 169 #ifdef PROF 170 #define xexit(n) done(n) 171 #endif 172 173 #ifdef cray 174 # define word word_t /* sys/types.h defines word.. bad move! */ 175 #endif 176 177 #include <sys/types.h> 178 179 #ifdef cray 180 # undef word 181 #endif 182 183 /* 184 * Path separator in environment variables 185 */ 186 #ifndef PATHSEP 187 # if defined(__EMX__) || defined(WINNT_NATIVE) 188 # define PATHSEP ';' 189 # else /* unix */ 190 # define PATHSEP ':' 191 # endif /* __EMX__ || WINNT_NATIVE */ 192 #endif /* !PATHSEP */ 193 194 #if defined(__HP_CXD_SPP) && !defined(__hpux) 195 # include <sys/cnx_stat.h> 196 # define stat stat64 197 # define fstat fstat64 198 # define lstat lstat64 199 #endif /* __HP_CXD_SPP && !__hpux */ 200 201 /* 202 * This macro compares the st_dev field of struct stat. On aix on ibmESA 203 * st_dev is a structure, so comparison does not work. 204 */ 205 #ifndef DEV_DEV_COMPARE 206 # define DEV_DEV_COMPARE(x,y) ((x) == (y)) 207 #endif /* DEV_DEV_COMPARE */ 208 209 #ifdef _SEQUENT_ 210 # include <sys/procstats.h> 211 #endif /* _SEQUENT_ */ 212 #if (defined(POSIX) || SYSVREL > 0) && !defined(WINNT_NATIVE) 213 # include <sys/times.h> 214 #endif /* (POSIX || SYSVREL > 0) && !WINNT_NATIVE */ 215 216 #ifdef NLS 217 # include <locale.h> 218 #endif /* NLS */ 219 220 221 #if !defined(_MINIX) && !defined(_VMS_POSIX) && !defined(WINNT_NATIVE) && !defined(__MVS__) 222 # include <sys/param.h> 223 #endif /* !_MINIX && !_VMS_POSIX && !WINNT_NATIVE && !__MVS__ */ 224 #include <sys/stat.h> 225 226 #if defined(BSDTIMES) || defined(BSDLIMIT) 227 # include <sys/time.h> 228 # if SYSVREL>3 && !defined(SCO) && !defined(sgi) && !defined(SNI) && !defined(sun) && !(defined(__alpha) && defined(__osf__)) && !defined(_SX) && !defined(__MVS__) 229 # include "/usr/ucbinclude/sys/resource.h" 230 # else 231 # ifdef convex 232 # define sysrusage cvxrusage 233 # include <sys/sysinfo.h> 234 # else 235 # define sysrusage rusage 236 # include <sys/resource.h> 237 # endif /* convex */ 238 # endif /* SYSVREL>3 */ 239 #endif /* BSDTIMES */ 240 241 #ifndef WINNT_NATIVE 242 # ifndef POSIX 243 # ifdef TERMIO 244 # include <termio.h> 245 # else /* SGTTY */ 246 # include <sgtty.h> 247 # endif /* TERMIO */ 248 # else /* POSIX */ 249 # ifndef _UWIN 250 # include <termios.h> 251 # else 252 # include <termio.h> 253 # endif /* _UWIN */ 254 # if SYSVREL > 3 255 # undef TIOCGLTC /* we don't need those, since POSIX has them */ 256 # undef TIOCSLTC 257 # undef CSWTCH 258 # define CSWTCH _POSIX_VDISABLE /* So job control works */ 259 # endif /* SYSVREL > 3 */ 260 # endif /* POSIX */ 261 #endif /* WINNT_NATIVE */ 262 263 #ifdef sonyrisc 264 # include <sys/ttold.h> 265 #endif /* sonyrisc */ 266 267 #if defined(POSIX) && !defined(WINNT_NATIVE) 268 /* 269 * We should be using setpgid and setpgid 270 * by now, but in some systems we use the 271 * old routines... 272 */ 273 # if !defined(__APPLE__) 274 # define getpgrp __getpgrp 275 # define setpgrp __setpgrp 276 # endif 277 # include <unistd.h> 278 # undef getpgrp 279 # undef setpgrp 280 281 /* 282 * the gcc+protoize version of <stdlib.h> 283 * redefines malloc(), so we define the following 284 * to avoid it. 285 */ 286 # if defined(SYSMALLOC) || defined(linux) || defined(sgi) || defined(_OSD_POSIX) 287 # define NO_FIX_MALLOC 288 # include <stdlib.h> 289 # else /* linux */ 290 # define _GNU_STDLIB_H 291 # define malloc __malloc 292 # define free __free 293 # define calloc __calloc 294 # define realloc __realloc 295 # include <stdlib.h> 296 # undef malloc 297 # undef free 298 # undef calloc 299 # undef realloc 300 # endif /* linux || sgi */ 301 # include <limits.h> 302 #endif /* POSIX && !WINNT_NATIVE */ 303 304 #if SYSVREL > 0 || defined(_IBMR2) || defined(_MINIX) || defined(linux) 305 # if !defined(pyr) && !defined(stellar) 306 # include <time.h> 307 # ifdef _MINIX 308 # define HZ CLOCKS_PER_SEC 309 # endif /* _MINIX */ 310 # endif /* !pyr && !stellar */ 311 #endif /* SYSVREL > 0 || _IBMR2 */ 312 313 /* In the following ifdef the DECOSF1 has been commented so that later 314 * versions of DECOSF1 will get TIOCGWINSZ. This might break older versions... 315 */ 316 #if !((defined(SUNOS4) || defined(_MINIX) /* || defined(DECOSF1) */) && defined(TERMIO)) 317 # if !defined(COHERENT) && !defined(_VMS_POSIX) && !defined(WINNT_NATIVE) 318 # include <sys/ioctl.h> 319 # endif 320 #endif 321 322 #if (defined(__DGUX__) && defined(POSIX)) || defined(DGUX) 323 #undef CSWTCH 324 #define CSWTCH _POSIX_VDISABLE 325 #endif 326 327 #if (!defined(FIOCLEX) && defined(SUNOS4)) || ((SYSVREL == 4) && !defined(_SEQUENT_) && !defined(SCO) && !defined(_SX)) && !defined(__MVS__) 328 # include <sys/filio.h> 329 #endif /* (!FIOCLEX && SUNOS4) || (SYSVREL == 4 && !_SEQUENT_ && !SCO && !_SX ) */ 330 331 #if !defined(_MINIX) && !defined(COHERENT) && !defined(supermax) && !defined(WINNT_NATIVE) && !defined(IRIS4D) 332 # include <sys/file.h> 333 #endif /* !_MINIX && !COHERENT && !supermax && !WINNT_NATIVE && !defined(IRIS4D) */ 334 335 #if !defined(O_RDONLY) || !defined(O_NDELAY) 336 # include <fcntl.h> 337 #endif 338 339 #include <errno.h> 340 341 #include <setjmp.h> 342 343 #if __STDC__ || defined(FUNCPROTO) 344 # include <stdarg.h> 345 #else 346 #ifdef _MINIX 347 # include "mi.varargs.h" 348 #else 349 # include <varargs.h> 350 #endif /* _MINIX */ 351 #endif 352 353 #ifdef DIRENT 354 # include <dirent.h> 355 #else 356 # ifdef hp9000s500 357 # include <ndir.h> 358 # else 359 # include <sys/dir.h> 360 # endif 361 # define dirent direct 362 #endif /* DIRENT */ 363 #if defined(hpux) || defined(sgi) || defined(OREO) || defined(COHERENT) 364 # include <stdio.h> /* So the fgetpwent() prototypes work */ 365 #endif /* hpux || sgi || OREO || COHERENT */ 366 #ifndef WINNT_NATIVE 367 #include <pwd.h> 368 #include <grp.h> 369 #endif /* WINNT_NATIVE */ 370 #ifdef PW_SHADOW 371 # include <shadow.h> 372 #endif /* PW_SHADOW */ 373 #ifdef PW_AUTH 374 # include <auth.h> 375 #endif /* PW_AUTH */ 376 #if defined(BSD) && !defined(POSIX) 377 # include <strings.h> 378 # define strchr(a, b) index(a, b) 379 # define strrchr(a, b) rindex(a, b) 380 #else 381 # include <string.h> 382 #endif /* BSD */ 383 384 /* 385 * IRIX-5.0 has <sys/cdefs.h>, but most system include files do not 386 * include it yet, so we include it here 387 */ 388 #if defined(sgi) && SYSVREL > 3 389 # include <sys/cdefs.h> 390 #endif /* sgi && SYSVREL > 3 */ 391 392 #ifdef REMOTEHOST 393 # ifdef ISC 394 # undef MAXHOSTNAMELEN /* Busted headers? */ 395 # endif 396 397 # include <netinet/in.h> 398 # include <arpa/inet.h> 399 # include <sys/socket.h> 400 # if (defined(_SS_SIZE) || defined(_SS_MAXSIZE)) && !defined(NO_SS_FAMILY) 401 # if !defined(__APPLE__) /* Damnit, where is getnameinfo() folks? */ 402 # if !defined(sgi) 403 # define INET6 404 # endif /* sgi */ 405 # endif /* __APPLE__ */ 406 # endif 407 # include <sys/uio.h> /* For struct iovec */ 408 #endif /* REMOTEHOST */ 409 410 /* 411 * ANSIisms... These must be *after* the system include and 412 * *before* our includes, so that BSDreno has time to define __P 413 */ 414 #undef __P 415 #ifndef __P 416 # if __STDC__ || defined(FUNCPROTO) 417 # ifndef FUNCPROTO 418 # define FUNCPROTO 419 # endif 420 # define __P(a) a 421 # else 422 # define __P(a) () 423 # if !__STDC__ 424 # define const 425 # ifndef apollo 426 # define volatile /* Apollo 'c' extensions need this */ 427 # endif /* apollo */ 428 # endif 429 # endif 430 #endif 431 432 433 #ifdef PURIFY 434 /* exit normally, allowing purify to trace leaks */ 435 # define _exit exit 436 typedef int pret_t; 437 #else /* !PURIFY */ 438 /* 439 * If your compiler complains, then you can either 440 * throw it away and get gcc or, use the following define 441 * and get rid of the typedef. 442 * [The 4.2/3BSD vax compiler does not like that] 443 * Both MULTIFLOW and PCC compilers exhbit this bug. -- sterling@netcom.com 444 */ 445 # if (defined(vax) || defined(uts) || defined(MULTIFLOW) || defined(PCC)) && !defined(__GNUC__) 446 # define pret_t void 447 # else /* !((vax || uts || MULTIFLOW || PCC) && !__GNUC__) */ 448 typedef void pret_t; 449 # endif /* (vax || uts || MULTIFLOW || PCC) && !__GNUC__ */ 450 #endif /* PURIFY */ 451 452 typedef int bool; 453 454 /* 455 * ASCII vs. EBCDIC 456 */ 457 #if 'Z' - 'A' == 25 458 # ifndef IS_ASCII 459 # define IS_ASCII 460 # endif 461 #endif 462 463 #include "sh.types.h" 464 465 #ifndef WINNT_NATIVE 466 # ifndef POSIX 467 extern pid_t getpgrp __P((int)); 468 # else /* POSIX */ 469 # if (defined(BSD) && !defined(BSD4_4)) || defined(SUNOS4) || defined(IRIS4D) || defined(DGUX) 470 extern pid_t getpgrp __P((int)); 471 # else /* !(BSD || SUNOS4 || IRIS4D || DGUX) */ 472 extern pid_t getpgrp __P((void)); 473 # endif /* BSD || SUNOS4 || IRISD || DGUX */ 474 # endif /* POSIX */ 475 extern pid_t setpgrp __P((pid_t, pid_t)); 476 #endif /* !WINNT_NATIVE */ 477 478 typedef sigret_t (*signalfun_t) __P((int)); 479 480 #ifndef lint 481 typedef ptr_t memalign_t; 482 #else 483 typedef union { 484 char am_char, *am_char_p; 485 short am_short, *am_short_p; 486 int am_int, *am_int_p; 487 long am_long, *am_long_p; 488 float am_float, *am_float_p; 489 double am_double, *am_double_p; 490 } *memalign_t; 491 492 # define malloc lint_malloc 493 # define free lint_free 494 # define realloc lint_realloc 495 # define calloc lint_calloc 496 #endif 497 498 #ifdef MDEBUG 499 extern memalign_t DebugMalloc __P((unsigned, char *, int)); 500 extern memalign_t DebugRealloc __P((ptr_t, unsigned, char *, int)); 501 extern memalign_t DebugCalloc __P((unsigned, unsigned, char *, int)); 502 extern void DebugFree __P((ptr_t, char *, int)); 503 # define xmalloc(i) DebugMalloc(i, __FILE__, __LINE__) 504 # define xrealloc(p, i)((p) ? DebugRealloc(p, i, __FILE__, __LINE__) : \ 505 DebugMalloc(i, __FILE__, __LINE__)) 506 # define xcalloc(n, s) DebugCalloc(n, s, __FILE__, __LINE__) 507 # define xfree(p) if (p) DebugFree(p, __FILE__, __LINE__) 508 #else 509 # ifdef SYSMALLOC 510 # define xmalloc(i) smalloc(i) 511 # define xrealloc(p, i) srealloc(p, i) 512 # define xcalloc(n, s) scalloc(n, s) 513 # define xfree(p) sfree(p) 514 # else 515 # define xmalloc(i) malloc(i) 516 # define xrealloc(p, i) realloc(p, i) 517 # define xcalloc(n, s) calloc(n, s) 518 # define xfree(p) free(p) 519 # endif /* SYSMALLOC */ 520 #endif /* MDEBUG */ 521 #include "sh.char.h" 522 #include "sh.err.h" 523 #include "sh.dir.h" 524 #include "sh.proc.h" 525 526 #include "pathnames.h" 527 528 529 /* 530 * C shell 531 * 532 * Bill Joy, UC Berkeley 533 * October, 1978; May 1980 534 * 535 * Jim Kulp, IIASA, Laxenburg Austria 536 * April, 1980 537 */ 538 539 #if !defined(MAXNAMLEN) && defined(_D_NAME_MAX) 540 # define MAXNAMLEN _D_NAME_MAX 541 #endif /* MAXNAMLEN */ 542 543 #ifdef HESIOD 544 # include <hesiod.h> 545 #endif /* HESIOD */ 546 547 #ifdef REMOTEHOST 548 # include <netdb.h> 549 #endif /* REMOTEHOST */ 550 551 #ifndef MAXHOSTNAMELEN 552 # if defined(SCO) && (SYSVREL > 3) 553 # include <sys/socket.h> 554 # else 555 # define MAXHOSTNAMELEN 256 556 # endif 557 #endif /* MAXHOSTNAMELEN */ 558 559 560 561 #define eq(a, b) (Strcmp(a, b) == 0) 562 563 /* globone() flags */ 564 #define G_ERROR 0 /* default action: error if multiple words */ 565 #define G_IGNORE 1 /* ignore the rest of the words */ 566 #define G_APPEND 2 /* make a sentence by cat'ing the words */ 567 568 /* 569 * Global flags 570 */ 571 EXTERN bool chkstop IZERO; /* Warned of stopped jobs... allow exit */ 572 573 #if (defined(FIOCLEX) && defined(FIONCLEX)) || defined(F_SETFD) 574 # define CLOSE_ON_EXEC 575 #else 576 EXTERN bool didcch IZERO; /* Have closed unused fd's for child */ 577 #endif /* (FIOCLEX && FIONCLEX) || F_SETFD */ 578 579 EXTERN bool didfds IZERO; /* Have setup i/o fd's for child */ 580 EXTERN bool doneinp IZERO; /* EOF indicator after reset from readc */ 581 EXTERN bool exiterr IZERO; /* Exit if error or non-zero exit status */ 582 EXTERN bool child IZERO; /* Child shell ... errors cause exit */ 583 EXTERN bool haderr IZERO; /* Reset was because of an error */ 584 EXTERN bool intty IZERO; /* Input is a tty */ 585 EXTERN bool intact IZERO; /* We are interactive... therefore prompt */ 586 EXTERN bool justpr IZERO; /* Just print because of :p hist mod */ 587 EXTERN bool loginsh IZERO; /* We are a loginsh -> .login/.logout */ 588 EXTERN bool neednote IZERO; /* Need to pnotify() */ 589 EXTERN bool noexec IZERO; /* Don't execute, just syntax check */ 590 EXTERN bool pjobs IZERO; /* want to print jobs if interrupted */ 591 EXTERN bool setintr IZERO; /* Set interrupts on/off -> Wait intr... */ 592 EXTERN bool timflg IZERO; /* Time the next waited for command */ 593 EXTERN bool havhash IZERO; /* path hashing is available */ 594 EXTERN bool editing IZERO; /* doing filename expansion and line editing */ 595 EXTERN bool noediting IZERO; /* initial $term defaulted to noedit */ 596 EXTERN bool bslash_quote IZERO;/* PWP: tcsh-style quoting? (in sh.c) */ 597 EXTERN bool isoutatty IZERO; /* is SHOUT a tty */ 598 EXTERN bool isdiagatty IZERO;/* is SHDIAG a tty */ 599 EXTERN bool is1atty IZERO; /* is file descriptor 1 a tty (didfds mode) */ 600 EXTERN bool is2atty IZERO; /* is file descriptor 2 a tty (didfds mode) */ 601 EXTERN bool arun IZERO; /* Currently running multi-line-aliases */ 602 EXTERN int implicit_cd IZERO;/* implicit cd enabled?(1=enabled,2=verbose) */ 603 EXTERN bool inheredoc IZERO; /* Currently parsing a heredoc */ 604 EXTERN bool windowchg IZERO; /* We received a window change event */ 605 606 /* 607 * Global i/o info 608 */ 609 EXTERN Char *arginp IZERO; /* Argument input for sh -c and internal `xx` */ 610 EXTERN int onelflg IZERO; /* 2 -> need line for -t, 1 -> exit on read */ 611 extern Char *ffile; /* Name of shell file for $0 */ 612 extern bool dolzero; /* if $?0 should return true... */ 613 614 #if defined(FILEC) && defined(TIOCSTI) 615 extern bool filec; 616 #endif /* FILEC && TIOCSTI */ 617 618 extern char *seterr; /* Error message from scanner/parser */ 619 #if !defined(BSD4_4) && !defined(__linux__) 620 extern int errno; /* Error from C library routines */ 621 #endif 622 extern int exitset; 623 EXTERN Char *shtemp IZERO; /* Temp name for << shell files in /tmp */ 624 625 #ifdef BSDTIMES 626 EXTERN struct timeval time0; /* Time at which the shell started */ 627 EXTERN struct sysrusage ru0; 628 #else 629 # ifdef _SEQUENT_ 630 EXTERN timeval_t time0; /* time at which shell started */ 631 EXTERN struct process_stats ru0; 632 # else /* _SEQUENT_ */ 633 # ifndef POSIX 634 EXTERN time_t time0; /* time at which shell started */ 635 # else /* POSIX */ 636 EXTERN clock_t time0; /* time at which shell started */ 637 EXTERN clock_t clk_tck; 638 # endif /* POSIX */ 639 EXTERN struct tms shtimes; /* shell and child times for process timing */ 640 # endif /* _SEQUENT_ */ 641 EXTERN long seconds0; 642 #endif /* BSDTIMES */ 643 644 #ifndef HZ 645 # define HZ 100 /* for division into seconds */ 646 #endif 647 648 /* 649 * Miscellany 650 */ 651 EXTERN Char *doldol; /* Character pid for $$ */ 652 EXTERN int backpid; /* pid of the last background job */ 653 654 /* 655 * Ideally these should be uid_t, gid_t, pid_t. I cannot do that right now 656 * cause pid's could be unsigned and that would break our -1 flag, and 657 * uid_t and gid_t are not defined in all the systems so I would have to 658 * make special cases for them. In the future... 659 */ 660 EXTERN int uid, euid, /* Invokers real and effective */ 661 gid, egid; /* User and group ids */ 662 EXTERN int opgrp, /* Initial pgrp and tty pgrp */ 663 shpgrp, /* Pgrp of shell */ 664 tpgrp; /* Terminal process group */ 665 /* If tpgrp is -1, leave tty alone! */ 666 667 EXTERN Char PromptBuf[INBUFSIZE*2]; /* buffer for the actual printed prompt. 668 * this must be large enough to contain 669 * the input line and the prompt, in 670 * case a correction occurred... 671 */ 672 EXTERN Char RPromptBuf[INBUFSIZE]; /* buffer for right-hand side prompt */ 673 674 /* 675 * To be able to redirect i/o for builtins easily, the shell moves the i/o 676 * descriptors it uses away from 0,1,2. 677 * Ideally these should be in units which are closed across exec's 678 * (this saves work) but for version 6, this is not usually possible. 679 * The desired initial values for these descriptors are defined in 680 * sh.local.h. 681 */ 682 EXTERN int SHIN IZERO; /* Current shell input (script) */ 683 EXTERN int SHOUT IZERO; /* Shell output */ 684 EXTERN int SHDIAG IZERO; /* Diagnostic output... shell errs go here */ 685 EXTERN int OLDSTD IZERO; /* Old standard input (def for cmds) */ 686 687 688 #if SYSVREL == 4 && defined(_UTS) 689 /* 690 * From: fadden@uts.amdahl.com (Andy McFadden) 691 * we need sigsetjmp for UTS4, but not UTS2.1 692 */ 693 # define SIGSETJMP 694 #endif 695 696 /* 697 * Error control 698 * 699 * Errors in scanning and parsing set up an error message to be printed 700 * at the end and complete. Other errors always cause a reset. 701 * Because of source commands and .cshrc we need nested error catches. 702 */ 703 704 #ifdef NO_STRUCT_ASSIGNMENT 705 706 # ifdef SIGSETJMP 707 typedef sigjmp_buf jmp_buf_t; 708 /* bugfix by Jak Kirman @ Brown U.: remove the (void) cast here, see sh.c */ 709 # define setexit() sigsetjmp(reslab) 710 # define reset() siglongjmp(reslab, 1) 711 # else 712 typedef jmp_buf jmp_buf_t; 713 /* bugfix by Jak Kirman @ Brown U.: remove the (void) cast here, see sh.c */ 714 # define setexit() setjmp(reslab) 715 # define reset() longjmp(reslab, 1) 716 # endif 717 # define getexit(a) (void) memmove((ptr_t)&(a), (ptr_t)&reslab, sizeof(reslab)) 718 # define resexit(a) (void) memmove((ptr_t)&reslab, (ptr_t)&(a), sizeof(reslab)) 719 720 # define cpybin(a, b) (void) memmove((ptr_t)&(a), (ptr_t)&(b), sizeof(Bin)) 721 722 #else 723 724 # ifdef SIGSETJMP 725 typedef struct { sigjmp_buf j; } jmp_buf_t; 726 # define setexit() sigsetjmp(reslab.j) 727 # define reset() siglongjmp(reslab.j, 1) 728 # else 729 typedef struct { jmp_buf j; } jmp_buf_t; 730 # define setexit() setjmp(reslab.j) 731 # define reset() longjmp(reslab.j, 1) 732 # endif 733 734 # define getexit(a) (void) ((a) = reslab) 735 # define resexit(a) (void) (reslab = (a)) 736 737 # define cpybin(a, b) (void) ((a) = (b)) 738 739 #endif /* NO_STRUCT_ASSIGNMENT */ 740 741 extern jmp_buf_t reslab; 742 743 EXTERN Char *gointr; /* Label for an onintr transfer */ 744 745 extern signalfun_t parintr; /* Parents interrupt catch */ 746 extern signalfun_t parterm; /* Parents terminate catch */ 747 748 /* 749 * Lexical definitions. 750 * 751 * All lexical space is allocated dynamically. 752 * The eighth/sixteenth bit of characters is used to prevent recognition, 753 * and eventually stripped. 754 */ 755 #define META 0200 756 #define ASCII 0177 757 #ifdef SHORT_STRINGS 758 # define QUOTE ((Char) 0100000)/* 16nth char bit used for 'ing */ 759 # define TRIM 0077777 /* Mask to strip quote bit */ 760 # define UNDER 0040000 /* Underline flag */ 761 # define BOLD 0020000 /* Bold flag */ 762 # define STANDOUT 0010000 /* Standout flag */ 763 # define LITERAL 0004000 /* Literal character flag */ 764 # define ATTRIBUTES 0074000 /* The bits used for attributes */ 765 # define CHAR 0000377 /* Mask to mask out the character */ 766 #else 767 # define QUOTE ((Char) 0200) /* Eighth char bit used for 'ing */ 768 # define TRIM 0177 /* Mask to strip quote bit */ 769 # define UNDER 0000000 /* No extra bits to do both */ 770 # define BOLD 0000000 /* Bold flag */ 771 # define STANDOUT META /* Standout flag */ 772 # define LITERAL 0000000 /* Literal character flag */ 773 # define ATTRIBUTES 0200 /* The bits used for attributes */ 774 # define CHAR 0000177 /* Mask to mask out the character */ 775 #endif 776 777 EXTERN int AsciiOnly; /* If set only 7 bits expected in characters */ 778 779 /* 780 * Each level of input has a buffered input structure. 781 * There are one or more blocks of buffered input for each level, 782 * exactly one if the input is seekable and tell is available. 783 * In other cases, the shell buffers enough blocks to keep all loops 784 * in the buffer. 785 */ 786 EXTERN struct Bin { 787 off_t Bfseekp; /* Seek pointer */ 788 off_t Bfbobp; /* Seekp of beginning of buffers */ 789 off_t Bfeobp; /* Seekp of end of buffers */ 790 int Bfblocks; /* Number of buffer blocks */ 791 Char **Bfbuf; /* The array of buffer blocks */ 792 } B; 793 794 /* 795 * This structure allows us to seek inside aliases 796 */ 797 struct Ain { 798 int type; 799 #define TCSH_I_SEEK 0 /* Invalid seek */ 800 #define TCSH_A_SEEK 1 /* Alias seek */ 801 #define TCSH_F_SEEK 2 /* File seek */ 802 #define TCSH_E_SEEK 3 /* Eval seek */ 803 union { 804 off_t _f_seek; 805 Char* _c_seek; 806 } fc; 807 #define f_seek fc._f_seek 808 #define c_seek fc._c_seek 809 Char **a_seek; 810 } ; 811 812 extern int aret; /* Type of last char returned */ 813 #define SEEKEQ(a, b) ((a)->type == (b)->type && \ 814 (a)->f_seek == (b)->f_seek && \ 815 (a)->a_seek == (b)->a_seek) 816 817 #define fseekp B.Bfseekp 818 #define fbobp B.Bfbobp 819 #define feobp B.Bfeobp 820 #define fblocks B.Bfblocks 821 #define fbuf B.Bfbuf 822 823 /* 824 * The shell finds commands in loops by reseeking the input 825 * For whiles, in particular, it reseeks to the beginning of the 826 * line the while was on; hence the while placement restrictions. 827 */ 828 EXTERN struct Ain lineloc; 829 830 EXTERN bool cantell; /* Is current source tellable ? */ 831 832 /* 833 * Input lines are parsed into doubly linked circular 834 * lists of words of the following form. 835 */ 836 struct wordent { 837 Char *word; 838 struct wordent *prev; 839 struct wordent *next; 840 }; 841 842 /* 843 * During word building, both in the initial lexical phase and 844 * when expanding $ variable substitutions, expansion by `!' and `$' 845 * must be inhibited when reading ahead in routines which are themselves 846 * processing `!' and `$' expansion or after characters such as `\' or in 847 * quotations. The following flags are passed to the getC routines 848 * telling them which of these substitutions are appropriate for the 849 * next character to be returned. 850 */ 851 #define DODOL 1 852 #define DOEXCL 2 853 #define DOALL DODOL|DOEXCL 854 855 /* 856 * Labuf implements a general buffer for lookahead during lexical operations. 857 * Text which is to be placed in the input stream can be stuck here. 858 * We stick parsed ahead $ constructs during initial input, 859 * process id's from `$$', and modified variable values (from qualifiers 860 * during expansion in sh.dol.c) here. 861 */ 862 EXTERN Char *lap; 863 864 /* 865 * Parser structure 866 * 867 * Each command is parsed to a tree of command structures and 868 * flags are set bottom up during this process, to be propagated down 869 * as needed during the semantics/exeuction pass (sh.sem.c). 870 */ 871 struct command { 872 unsigned char t_dtyp; /* Type of node */ 873 #define NODE_COMMAND 1 /* t_dcom <t_dlef >t_drit */ 874 #define NODE_PAREN 2 /* ( t_dspr ) <t_dlef >t_drit */ 875 #define NODE_PIPE 3 /* t_dlef | t_drit */ 876 #define NODE_LIST 4 /* t_dlef ; t_drit */ 877 #define NODE_OR 5 /* t_dlef || t_drit */ 878 #define NODE_AND 6 /* t_dlef && t_drit */ 879 unsigned char t_nice; /* Nice value */ 880 #ifdef apollo 881 unsigned char t_systype; /* System environment */ 882 #endif 883 unsigned long t_dflg; /* Flags, e.g. F_AMPERSAND|... */ 884 /* save these when re-doing */ 885 #ifndef apollo 886 #define F_SAVE (F_NICE|F_TIME|F_NOHUP|F_HUP) 887 #else 888 #define F_SAVE (F_NICE|F_TIME|F_NOHUP||F_HUP|F_VER) 889 #endif 890 #define F_AMPERSAND (1<<0) /* executes in background */ 891 #define F_APPEND (1<<1) /* output is redirected >> */ 892 #define F_PIPEIN (1<<2) /* input is a pipe */ 893 #define F_PIPEOUT (1<<3) /* output is a pipe */ 894 #define F_NOFORK (1<<4) /* don't fork, last ()ized cmd */ 895 #define F_NOINTERRUPT (1<<5) /* should be immune from intr's */ 896 /* spare */ 897 #define F_STDERR (1<<7) /* redirect unit 2 with unit 1 */ 898 #define F_OVERWRITE (1<<8) /* output was ! */ 899 #define F_READ (1<<9) /* input redirection is << */ 900 #define F_REPEAT (1<<10) /* reexec aft if, repeat,... */ 901 #define F_NICE (1<<11) /* t_nice is meaningful */ 902 #define F_NOHUP (1<<12) /* nohup this command */ 903 #define F_TIME (1<<13) /* time this command */ 904 #define F_BACKQ (1<<14) /* command is in `` */ 905 #define F_HUP (1<<15) /* hup this command */ 906 #ifdef apollo 907 #define F_VER (1<<16) /* execute command under SYSTYPE */ 908 #endif 909 union { 910 Char *T_dlef; /* Input redirect word */ 911 struct command *T_dcar; /* Left part of list/pipe */ 912 } L; 913 union { 914 Char *T_drit; /* Output redirect word */ 915 struct command *T_dcdr; /* Right part of list/pipe */ 916 } R; 917 #define t_dlef L.T_dlef 918 #define t_dcar L.T_dcar 919 #define t_drit R.T_drit 920 #define t_dcdr R.T_dcdr 921 Char **t_dcom; /* Command/argument vector */ 922 struct command *t_dspr; /* Pointer to ()'d subtree */ 923 }; 924 925 926 /* 927 * The keywords for the parser 928 */ 929 #define TC_BREAK 0 930 #define TC_BRKSW 1 931 #define TC_CASE 2 932 #define TC_DEFAULT 3 933 #define TC_ELSE 4 934 #define TC_END 5 935 #define TC_ENDIF 6 936 #define TC_ENDSW 7 937 #define TC_EXIT 8 938 #define TC_FOREACH 9 939 #define TC_GOTO 10 940 #define TC_IF 11 941 #define TC_LABEL 12 942 #define TC_LET 13 943 #define TC_SET 14 944 #define TC_SWITCH 15 945 #define TC_TEST 16 946 #define TC_THEN 17 947 #define TC_WHILE 18 948 949 /* 950 * These are declared here because they want to be 951 * initialized in sh.init.c (to allow them to be made readonly) 952 */ 953 954 #if defined(hpux) && defined(__STDC__) && !defined(__GNUC__) 955 /* Avoid hpux ansi mode spurious warnings */ 956 typedef void (*bfunc_t) (); 957 #else 958 typedef void (*bfunc_t) __P((Char **, struct command *)); 959 #endif /* hpux && __STDC__ && !__GNUC__ */ 960 961 extern struct biltins { 962 char *bname; 963 bfunc_t bfunct; 964 int minargs, maxargs; 965 } bfunc[]; 966 extern int nbfunc; 967 #ifdef WINNT_NATIVE 968 extern struct biltins nt_bfunc[]; 969 extern int nt_nbfunc; 970 #endif /* WINNT_NATIVE*/ 971 972 extern struct srch { 973 char *s_name; 974 int s_value; 975 } srchn[]; 976 extern int nsrchn; 977 978 /* 979 * Structure defining the existing while/foreach loops at this 980 * source level. Loops are implemented by seeking back in the 981 * input. For foreach (fe), the word list is attached here. 982 */ 983 EXTERN struct whyle { 984 struct Ain w_start; /* Point to restart loop */ 985 struct Ain w_end; /* End of loop (0 if unknown) */ 986 Char **w_fe, **w_fe0; /* Current/initial wordlist for fe */ 987 Char *w_fename; /* Name for fe */ 988 struct whyle *w_next; /* Next (more outer) loop */ 989 } *whyles; 990 991 /* 992 * Variable structure 993 * 994 * Aliases and variables are stored in AVL balanced binary trees. 995 */ 996 EXTERN struct varent { 997 Char **vec; /* Array of words which is the value */ 998 Char *v_name; /* Name of variable/alias */ 999 int v_flags; /* Flags */ 1000 #define VAR_ALL -1 1001 #define VAR_READONLY 1 1002 #define VAR_READWRITE 2 1003 #define VAR_NOGLOB 4 1004 #define VAR_FIRST 32 1005 #define VAR_LAST 64 1006 struct varent *v_link[3]; /* The links, see below */ 1007 int v_bal; /* Balance factor */ 1008 } shvhed IZERO_STRUCT, aliases IZERO_STRUCT; 1009 1010 #define v_left v_link[0] 1011 #define v_right v_link[1] 1012 #define v_parent v_link[2] 1013 1014 #define adrof(v) adrof1(v, &shvhed) 1015 #define varval(v) value1(v, &shvhed) 1016 1017 /* 1018 * The following are for interfacing redo substitution in 1019 * aliases to the lexical routines. 1020 */ 1021 EXTERN struct wordent *alhistp IZERO_STRUCT;/* Argument list (first) */ 1022 EXTERN struct wordent *alhistt IZERO_STRUCT;/* Node after last in arg list */ 1023 EXTERN Char **alvec IZERO_STRUCT, 1024 *alvecp IZERO_STRUCT;/* The (remnants of) alias vector */ 1025 1026 /* 1027 * Filename/command name expansion variables 1028 */ 1029 EXTERN int gflag; /* After tglob -> is globbing needed? */ 1030 1031 #define MAXVARLEN 30 /* Maximum number of char in a variable name */ 1032 1033 #ifndef MAXPATHLEN 1034 # define MAXPATHLEN 2048 1035 #endif /* MAXPATHLEN */ 1036 1037 #ifndef MAXNAMLEN 1038 # define MAXNAMLEN 512 1039 #endif /* MAXNAMLEN */ 1040 1041 #ifndef HAVENOLIMIT 1042 /* 1043 * resource limits 1044 */ 1045 extern struct limits { 1046 int limconst; 1047 char *limname; 1048 int limdiv; 1049 char *limscale; 1050 } limits[]; 1051 #endif /* !HAVENOLIMIT */ 1052 1053 /* 1054 * Variables for filename expansion 1055 */ 1056 extern Char **gargv; /* Pointer to the (stack) arglist */ 1057 extern int gargc; /* Number args in gargv */ 1058 1059 /* 1060 * Variables for command expansion. 1061 */ 1062 extern Char **pargv; /* Pointer to the argv list space */ 1063 EXTERN Char *pargs; /* Pointer to start current word */ 1064 EXTERN long pnleft; /* Number of chars left in pargs */ 1065 EXTERN Char *pargcp; /* Current index into pargs */ 1066 1067 /* 1068 * History list 1069 * 1070 * Each history list entry contains an embedded wordlist 1071 * from the scanner, a number for the event, and a reference count 1072 * to aid in discarding old entries. 1073 * 1074 * Essentially "invisible" entries are put on the history list 1075 * when history substitution includes modifiers, and thrown away 1076 * at the next discarding since their event numbers are very negative. 1077 */ 1078 EXTERN struct Hist { 1079 struct wordent Hlex; 1080 int Hnum; 1081 int Href; 1082 time_t Htime; 1083 Char *histline; 1084 struct Hist *Hnext; 1085 } Histlist IZERO_STRUCT; 1086 1087 EXTERN struct wordent paraml; /* Current lexical word list */ 1088 EXTERN int eventno; /* Next events number */ 1089 EXTERN int lastev; /* Last event reference (default) */ 1090 1091 EXTERN Char HIST; /* history invocation character */ 1092 EXTERN Char HISTSUB; /* auto-substitute character */ 1093 EXTERN Char PRCH; /* Prompt symbol for regular users */ 1094 EXTERN Char PRCHROOT; /* Prompt symbol for root */ 1095 1096 /* 1097 * For operating systems with single case filenames (OS/2) 1098 */ 1099 #ifdef CASE_INSENSITIVE 1100 # define samecase(x) (isupper((unsigned char)(x)) ? \ 1101 tolower((unsigned char)(x)) : (x)) 1102 #else 1103 # define samecase(x) (x) 1104 #endif /* CASE_INSENSITIVE */ 1105 1106 /* 1107 * strings.h: 1108 */ 1109 #ifndef SHORT_STRINGS 1110 #define Strchr(a, b) strchr(a, b) 1111 #define Strrchr(a, b) strrchr(a, b) 1112 #define Strcat(a, b) strcat(a, b) 1113 #define Strncat(a, b, c) strncat(a, b, c) 1114 #define Strcpy(a, b) strcpy(a, b) 1115 #define Strncpy(a, b, c) strncpy(a, b, c) 1116 #define Strlen(a) strlen(a) 1117 #define Strcmp(a, b) strcmp(a, b) 1118 #define Strncmp(a, b, c) strncmp(a, b, c) 1119 1120 #define Strspl(a, b) strspl(a, b) 1121 #define Strsave(a) strsave(a) 1122 #define Strend(a) strend(a) 1123 #define Strstr(a, b) strstr(a, b) 1124 1125 #define str2short(a) (a) 1126 #define blk2short(a) saveblk(a) 1127 #define short2blk(a) saveblk(a) 1128 #define short2str(a) strip(a) 1129 #else 1130 #define Strchr(a, b) s_strchr(a, b) 1131 #define Strrchr(a, b) s_strrchr(a, b) 1132 #define Strcat(a, b) s_strcat(a, b) 1133 #define Strncat(a, b, c) s_strncat(a, b, c) 1134 #define Strcpy(a, b) s_strcpy(a, b) 1135 #define Strncpy(a, b, c) s_strncpy(a, b, c) 1136 #define Strlen(a) s_strlen(a) 1137 #define Strcmp(a, b) s_strcmp(a, b) 1138 #define Strncmp(a, b, c) s_strncmp(a, b, c) 1139 1140 #define Strspl(a, b) s_strspl(a, b) 1141 #define Strsave(a) s_strsave(a) 1142 #define Strend(a) s_strend(a) 1143 #define Strstr(a, b) s_strstr(a, b) 1144 #endif 1145 1146 /* 1147 * setname is a macro to save space (see sh.err.c) 1148 */ 1149 EXTERN char *bname; 1150 1151 #define setname(a) (bname = (a)) 1152 1153 #ifdef VFORK 1154 EXTERN Char *Vsav; 1155 EXTERN Char *Vdp; 1156 EXTERN Char *Vexpath; 1157 EXTERN char **Vt; 1158 #endif /* VFORK */ 1159 1160 EXTERN Char **evalvec; 1161 EXTERN Char *evalp; 1162 1163 extern struct mesg { 1164 char *iname; /* name from /usr/include */ 1165 char *pname; /* print name */ 1166 } mesg[]; 1167 1168 /* word_chars is set by default to WORD_CHARS but can be overridden by 1169 the worchars variable--if unset, reverts to WORD_CHARS */ 1170 1171 EXTERN Char *word_chars; 1172 1173 #define WORD_CHARS "*?_-.[]~=" /* default chars besides alnums in words */ 1174 1175 EXTERN Char *STR_SHELLPATH; 1176 1177 #ifdef _PATH_BSHELL 1178 EXTERN Char *STR_BSHELL; 1179 #endif 1180 EXTERN Char *STR_WORD_CHARS; 1181 EXTERN Char **STR_environ IZERO; 1182 1183 extern int dont_free; /* Tell free that we are in danger if we free */ 1184 1185 extern Char *INVPTR; 1186 extern Char **INVPPTR; 1187 1188 extern char *progname; 1189 extern int tcsh; 1190 1191 #include "tc.h" 1192 #include "sh.decls.h" 1193 1194 /* 1195 * To print system call errors... 1196 */ 1197 #ifdef BSD4_4 1198 # include <errno.h> 1199 #else 1200 # ifndef linux 1201 # ifdef NEEDstrerror 1202 extern char *sys_errlist[]; 1203 # endif 1204 extern int errno, sys_nerr; 1205 # endif /* !linux */ 1206 #endif 1207 1208 #ifndef WINNT_NATIVE 1209 # ifdef NLS_CATALOGS 1210 # ifdef linux 1211 # include <locale.h> 1212 # ifdef notdef 1213 # include <localeinfo.h> /* Has this changed ? */ 1214 # endif 1215 # include <features.h> 1216 # endif 1217 # ifdef SUNOS4 1218 /* Who stole my nl_types.h? :-( 1219 * All this stuff is in the man pages, but nowhere else? 1220 * This does not link right now... 1221 */ 1222 typedef void *nl_catd; 1223 extern const char * catgets __P((nl_catd, int, int, const char *)); 1224 nl_catd catopen __P((const char *, int)); 1225 int catclose __P((nl_catd)); 1226 # else 1227 # ifdef __uxps__ 1228 # define gettxt gettxt_ds 1229 # endif 1230 # include <nl_types.h> 1231 # ifdef __uxps__ 1232 # undef gettxt 1233 # endif 1234 # endif 1235 # ifndef MCLoadBySet 1236 # define MCLoadBySet 0 1237 # endif 1238 EXTERN nl_catd catd; 1239 # define CGETS(b, c, d) catgets(catd, b, c, d) 1240 # define CSAVS(b, c, d) strsave(CGETS(b, c, d)) 1241 # else 1242 # define CGETS(b, c, d) d 1243 # define CSAVS(b, c, d) d 1244 # endif 1245 #else /* WINNT_NATIVE */ 1246 # define CGETS(b, c, d) nt_cgets( b, c, d) 1247 # define CSAVS(b, c, d) strsave(CGETS(b, c, d)) 1248 #endif /* WINNT_NATIVE */ 1249 1250 /* 1251 * Since on some machines characters are unsigned, and the signed 1252 * keyword is not universally implemented, we treat all characters 1253 * as unsigned and sign extend them where we need. 1254 */ 1255 #define SIGN_EXTEND_CHAR(a) (((a) & 0x80) ? ((a) | ~0x7f) : (a)) 1256 1257 #endif /* _h_sh */ 1258