contrib/tcsh/tc.os.c

   1 /* $Header: /src/pub/tcsh/tc.os.c,v 3.53 2002/03/08 17:36:47 christos Exp $ */
   2 /*
   3  * tc.os.c: OS Dependent builtin functions
   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 #include "sh.h"
  34
  35 RCSID("$Id: tc.os.c,v 3.53 2002/03/08 17:36:47 christos Exp $")
  36
  37 #include "tw.h"
  38 #include "ed.h"
  39 #include "ed.defns.h"           /* for the function names */
  40 #include "sh.decls.h"
  41
  42 #ifdef _UWIN
  43 #define TIOCGPGRP TIOCGETPGRP
  44 #define TIOCSPGRP TIOCSETPGRP
  45 #endif
  46
  47 /***
  48  *** MACH
  49  ***/
  50
  51 #ifdef MACH
  52 /* dosetpath -- setpath built-in command
  53  *
  54  **********************************************************************
  55  * HISTORY
  56  * 08-May-88  Richard Draves (rpd) at Carnegie-Mellon University
  57  *      Major changes to remove artificial limits on sizes and numbers
  58  *      of paths.
  59  *
  60  **********************************************************************
  61  */
  62
  63 #ifdef MACH
  64 static Char STRCPATH[] = {'C', 'P', 'A', 'T', 'H', '\0'};
  65 static Char STRLPATH[] = {'L', 'P', 'A', 'T', 'H', '\0'};
  66 static Char STRMPATH[] = {'M', 'P', 'A', 'T', 'H', '\0'};
  67 # if EPATH
  68 static Char STREPATH[] = {'E', 'P', 'A', 'T', 'H', '\0'};
  69 # endif
  70 #endif /* MACH */
  71 static Char *syspaths[] = {STRKPATH, STRCPATH, STRLPATH, STRMPATH,
  72
  73 #if EPATH
  74         STREPATH,
  75 #endif
  76          0};
  77 #define LOCALSYSPATH    "/usr/local"
  78
  79 /*ARGSUSED*/
  80 void
  81 dosetpath(arglist, c)
  82     Char  **arglist;
  83     struct command *c;
  84 {
  85     extern char *getenv();
  86     sigmask_t omask;
  87     Char  **pathvars, **cmdargs;
  88     char  **spaths, **cpaths, **cmds;
  89     char   *tcp;
  90     unsigned int npaths, ncmds;
  91     int     i, sysflag;
  92
  93     omask = sigsetmask(sigmask(SIGINT));
  94
  95     /*
  96      * setpath(3) uses stdio and we want 0, 1, 2 to work...
  97      */
  98     if (!didfds) {
  99         (void) dcopy(SHIN, 0);
 100         (void) dcopy(SHOUT, 1);
 101         (void) dcopy(SHDIAG, 2);
 102         didfds = 1;
 103     }
 104
 105     for (i = 1; arglist[i] && (arglist[i][0] != '-'); i++);
 106     npaths = i - 1;
 107
 108     cmdargs = &arglist[i];
 109     for (; arglist[i]; i++);
 110     ncmds = i - npaths - 1;
 111
 112     if (npaths) {
 113         sysflag = 0;
 114         pathvars = &arglist[1];
 115     }
 116     else {
 117         sysflag = 1;
 118         npaths = (sizeof syspaths / sizeof *syspaths) - 1;
 119         pathvars = syspaths;
 120     }
 121
 122     /* note that npaths != 0 */
 123
 124     spaths = (char **) xmalloc((size_t) npaths * sizeof *spaths);
 125     setzero((char *) spaths, npaths * sizeof *spaths);
 126     cpaths = (char **) xmalloc((size_t) (npaths + 1) * sizeof *cpaths);
 127     setzero((char *) cpaths, (npaths + 1) * sizeof *cpaths);
 128     cmds = (char **) xmalloc((size_t) (ncmds + 1) * sizeof *cmds);
 129     setzero((char *) cmds, (ncmds + 1) * sizeof *cmds);
 130     for (i = 0; i < npaths; i++) {
 131         char   *val = getenv(short2str(pathvars[i]));
 132
 133         if (val == NULL)
 134             val = "";
 135
 136         spaths[i] = (char *) xmalloc((size_t) (Strlen(pathvars[i]) +
 137                                       strlen(val) + 2) * sizeof **spaths);
 138         (void) strcpy(spaths[i], short2str(pathvars[i]));
 139         (void) strcat(spaths[i], "=");
 140         (void) strcat(spaths[i], val);
 141         cpaths[i] = spaths[i];
 142     }
 143
 144     for (i = 0; i < ncmds; i++) {
 145         Char   *val = globone(cmdargs[i], G_ERROR);
 146
 147         if (val == NULL)
 148             goto abortpath;
 149         cmds[i] = (char *) xmalloc((size_t) Strlen(val) + 1);
 150         (void) strcpy(cmds[i], short2str(val));
 151     }
 152
 153
 154     if (setpath(cpaths, cmds, LOCALSYSPATH, sysflag, 1) < 0) {
 155 abortpath:
 156         if (spaths) {
 157             for (i = 0; i < npaths; i++)
 158                 if (spaths[i])
 159                     xfree((ptr_t) spaths[i]);
 160             xfree((ptr_t) spaths);
 161         }
 162         if (cpaths)
 163             xfree((ptr_t) cpaths);
 164         if (cmds) {
 165             for (i = 0; i < ncmds; i++)
 166                 if (cmds[i])
 167                     xfree((ptr_t) cmds[i]);
 168             xfree((ptr_t) cmds);
 169         }
 170
 171         (void) sigsetmask(omask);
 172         donefds();
 173         return;
 174     }
 175
 176     for (i = 0; i < npaths; i++) {
 177         Char    *val, *name;
 178
 179         name = str2short(cpaths[i]);
 180         for (val = str2short(cpaths[i]); val && *val && *val != '='; val++);
 181         if (val && *val == '=') {
 182             *val++ = '\0';
 183
 184             tsetenv(name, val);
 185             if (Strcmp(name, STRKPATH) == 0) {
 186                 importpath(val);
 187                 if (havhash)
 188                     dohash(NULL, NULL);
 189             }
 190             *--val = '=';
 191         }
 192     }
 193     (void) sigsetmask(omask);
 194     donefds();
 195 }
 196 #endif /* MACH */
 197
 198 /***
 199  *** AIX
 200  ***/
 201 #ifdef TCF
 202 /* ARGSUSED */
 203 void
 204 dogetxvers(v, c)
 205     Char  **v;
 206     struct command *c;
 207 {
 208     char    xvers[MAXPATHLEN];
 209
 210     if (getxvers(xvers, MAXPATHLEN) == -1)
 211         stderror(ERR_SYSTEM, "getxvers", strerror(errno));
 212     xprintf("%s\n", xvers);
 213     flush();
 214 }
 215
 216 /*ARGSUSED*/
 217 void
 218 dosetxvers(v, c)
 219     Char  **v;
 220     struct command *c;
 221 {
 222     char   *xvers;
 223
 224     ++v;
 225     if (!*v || *v[0] == '\0')
 226         xvers = "";
 227     else
 228         xvers = short2str(*v);
 229     if (setxvers(xvers) == -1)
 230         stderror(ERR_SYSTEM, "setxvers", strerror(errno));
 231 }
 232
 233 #include <sf.h>
 234 #ifdef _AIXPS2
 235 # define XC_PDP11       0x01
 236 # define XC_23          0x02
 237 # define XC_Z8K         0x03
 238 # define XC_8086        0x04
 239 # define XC_68K         0x05
 240 # define XC_Z80         0x06
 241 # define XC_VAX         0x07
 242 # define XC_16032       0x08
 243 # define XC_286         0x09
 244 # define XC_386         0x0a
 245 # define XC_S370        0x0b
 246 #else
 247 # include <sys/x.out.h>
 248 #endif /* _AIXPS2 */
 249
 250 static struct xc_cpu_t {
 251     short   xc_id;
 252     char   *xc_name;
 253 }       xcpu[] =
 254 {
 255     { XC_PDP11, "pdp11"   },
 256     { XC_23,    "i370"    },
 257     { XC_Z8K,   "z8000"   },
 258     { XC_8086,  "i86"     },
 259     { XC_68K,   "mc68000" },
 260     { XC_Z80,   "x80"     },
 261     { XC_VAX,   "vax"     },
 262     { XC_16032, "ns16032" },
 263     { XC_286,   "i286"    },
 264     { XC_386,   "i386"    },
 265     { XC_S370,  "xa370"   },
 266     { 0,        NULL      }
 267 };
 268
 269 /*
 270  * our local hack table, stolen from x.out.h
 271  */
 272 static char *
 273 getxcode(xcid)
 274     short   xcid;
 275 {
 276     int     i;
 277
 278     for (i = 0; xcpu[i].xc_name != NULL; i++)
 279         if (xcpu[i].xc_id == xcid)
 280             return (xcpu[i].xc_name);
 281     return (NULL);
 282 }
 283
 284 static short
 285 getxid(xcname)
 286     char   *xcname;
 287 {
 288     int     i;
 289
 290     for (i = 0; xcpu[i].xc_name != NULL; i++)
 291         if (strcmp(xcpu[i].xc_name, xcname) == 0)
 292             return (xcpu[i].xc_id);
 293     return ((short) -1);
 294 }
 295
 296
 297 /*ARGSUSED*/
 298 void
 299 dogetspath(v, c)
 300     Char  **v;
 301     struct command *c;
 302 {
 303     int     i, j;
 304     sitepath_t p[MAXSITE];
 305     struct sf *st;
 306     static char *local = "LOCAL ";
 307
 308     if ((j = getspath(p, MAXSITE)) == -1)
 309         stderror(ERR_SYSTEM, "getspath", strerror(errno));
 310     for (i = 0; i < j && (p[i] & SPATH_CPU) != NOSITE; i++) {
 311         if (p[i] & SPATH_CPU) {
 312             if ((p[i] & SPATH_MASK) == NULLSITE)
 313                 xprintf(local);
 314             else if ((st = sfxcode((short) (p[i] & SPATH_MASK))) != NULL)
 315                 xprintf("%s ", st->sf_ctype);
 316             else {
 317                 char   *xc = getxcode(p[i] & SPATH_MASK);
 318
 319                 if (xc != NULL)
 320                     xprintf("%s ", xc);
 321                 else
 322                     xprintf("*cpu %d* ", (int) (p[i] & SPATH_MASK));
 323                 /*
 324                  * BUG in the aix code... needs that cause if
 325                  * sfxcode fails once it fails for ever
 326                  */
 327                 endsf();
 328             }
 329         }
 330         else {
 331             if (p[i] == NULLSITE)
 332                 xprintf(local);
 333             else if ((st = sfnum(p[i])) != NULL)
 334                 xprintf("%s ", st->sf_sname);
 335             else
 336                 xprintf("*site %d* ", (int) (p[i] & SPATH_MASK));
 337         }
 338     }
 339     xputchar('\n');
 340     flush();
 341 }
 342
 343 /*ARGSUSED*/
 344 void
 345 dosetspath(v, c)
 346     Char  **v;
 347     struct command *c;
 348 {
 349     int     i;
 350     short   j;
 351     char   *s;
 352     sitepath_t p[MAXSITE];
 353     struct sf *st;
 354
 355     /*
 356      * sfname() on AIX G9.9 at least, mallocs too pointers p, q
 357      * then does the equivalent of while (*p++ == *q++) continue;
 358      * and then tries to free(p,q) them! Congrats to the wizard who
 359      * wrote that one. I bet he tested it really well too.
 360      * Sooo, we set dont_free :-)
 361      */
 362     dont_free = 1;
 363     for (i = 0, v++; *v && *v[0] != '\0'; v++, i++) {
 364         s = short2str(*v);
 365         if (Isdigit(*s))
 366             p[i] = atoi(s);
 367         else if (strcmp(s, "LOCAL") == 0)
 368             p[i] = NULLSITE;
 369         else if ((st = sfctype(s)) != NULL)
 370             p[i] = SPATH_CPU | st->sf_ccode;
 371         else if ((j = getxid(s)) != -1)
 372             p[i] = SPATH_CPU | j;
 373         else if ((st = sfname(s)) != NULL)
 374             p[i] = st->sf_id;
 375         else {
 376             setname(s);
 377             stderror(ERR_NAME | ERR_STRING, CGETS(23, 1, "Bad cpu/site name"));
 378         }
 379         if (i == MAXSITE - 1)
 380             stderror(ERR_NAME | ERR_STRING, CGETS(23, 2, "Site path too long"));
 381     }
 382     if (setspath(p, i) == -1)
 383         stderror(ERR_SYSTEM, "setspath", strerror(errno));
 384     dont_free = 0;
 385 }
 386
 387 /* sitename():
 388  *      Return the site name where the process is running
 389  */
 390 char   *
 391 sitename(pid)
 392     pid_t   pid;
 393 {
 394     siteno_t ss;
 395     struct sf *st;
 396
 397     if ((ss = site(pid)) == -1 || (st = sfnum(ss)) == NULL)
 398         return CGETS(23, 3, "unknown");
 399     else
 400         return st->sf_sname;
 401 }
 402
 403 static int
 404 migratepid(pid, new_site)
 405     pid_t   pid;
 406     siteno_t new_site;
 407 {
 408     struct sf *st;
 409     int     need_local;
 410
 411     need_local = (pid == 0) || (pid == getpid());
 412
 413     if (kill3((pid_t) pid, SIGMIGRATE, new_site) < 0) {
 414         xprintf("%d: %s\n", pid, strerror(errno));
 415         return (-1);
 416     }
 417
 418     if (need_local) {
 419         if ((new_site = site(0)) == -1) {
 420             xprintf(CGETS(23, 4, "site: %s\n"), strerror(errno));
 421             return (-1);
 422         }
 423         if ((st = sfnum(new_site)) == NULL) {
 424             xprintf(CGETS(23, 5, "%d: Site not found\n"), new_site);
 425             return (-1);
 426         }
 427         if (setlocal(st->sf_local, strlen(st->sf_local)) == -1) {
 428             xprintf(CGETS(23, 6, "setlocal: %s: %s\n"),
 429                           st->sf_local, strerror(errno));
 430             return (-1);
 431         }
 432     }
 433     return (0);
 434 }
 435
 436 /*ARGSUSED*/
 437 void
 438 domigrate(v, c)
 439     Char  **v;
 440     struct command *c;
 441 {
 442     struct sf *st;
 443     char   *s;
 444     Char   *cp;
 445     struct process *pp;
 446     int    err1 = 0;
 447     int    pid = 0;
 448     siteno_t new_site = 0;
 449     sigmask_t omask;
 450
 451 #ifdef BSDSIGS
 452     omask = sigmask(SIGCHLD);
 453     if (setintr)
 454         omask |= sigmask(SIGINT);
 455     omask = sigblock(omask) & ~omask;
 456 #else
 457     if (setintr)
 458         (void) sighold(SIGINT);
 459     (void) sighold(SIGCHLD);
 460 #endif /* BSDSIGS */
 461
 462     ++v;
 463     if (*v[0] == '-') {
 464         /*
 465          * Do the -site.
 466          */
 467         s = short2str(&v[0][1]);
 468         /*
 469          * see comment in setspath()
 470          */
 471         dont_free = 1;
 472         if ((st = sfname(s)) == NULL) {
 473             setname(s);
 474             stderror(ERR_NAME | ERR_STRING, CGETS(23, 7, "Site not found"));
 475         }
 476         dont_free = 0;
 477         new_site = st->sf_id;
 478         ++v;
 479     }
 480
 481     if (!*v || *v[0] == '\0') {
 482         if (migratepid(0, new_site) == -1)
 483             err1++;
 484     }
 485     else {
 486         gflag = 0, tglob(v);
 487         if (gflag) {
 488             v = globall(v);
 489             if (v == 0)
 490                 stderror(ERR_NAME | ERR_NOMATCH);
 491         }
 492         else {
 493             v = gargv = saveblk(v);
 494             trim(v);
 495         }
 496
 497         while (v && (cp = *v)) {
 498             if (*cp == '%') {
 499                 pp = pfind(cp);
 500                 if (kill3((pid_t) - pp->p_jobid, SIGMIGRATE, new_site) < 0) {
 501                     xprintf("%S: %s\n", cp, strerror(errno));
 502                     err1++;
 503                 }
 504             }
 505             else if (!(Isdigit(*cp) || *cp == '-'))
 506                 stderror(ERR_NAME | ERR_JOBARGS);
 507             else {
 508                 pid = atoi(short2str(cp));
 509                 if (migratepid(pid, new_site) == -1)
 510                     err1++;
 511             }
 512             v++;
 513         }
 514         if (gargv)
 515             blkfree(gargv), gargv = 0;
 516     }
 517
 518 done:
 519 #ifdef BSDSIGS
 520     (void) sigsetmask(omask);
 521 #else
 522     (void) sigrelse(SIGCHLD);
 523     if (setintr)
 524         (void) sigrelse(SIGINT);
 525 #endif /* BSDSIGS */
 526     if (err1)
 527         stderror(ERR_SILENT);
 528 }
 529
 530 #endif /* TCF */
 531
 532 /***
 533  *** CRAY ddmode <velo@sesun3.epfl.ch> (Martin Ouwehand EPFL-SIC/SE)
 534  ***/
 535 #if defined(_CRAY) && !defined(_CRAYMPP)
 536 void
 537 dodmmode(v, c)
 538     Char  **v;
 539     struct command *c;
 540 {
 541     Char *cp = v[1];
 542
 543     USE(c);
 544
 545     if ( !cp ) {
 546         int mode;
 547
 548         mode = dmmode(0);
 549         dmmode(mode);
 550         xprintf("%d\n",mode);
 551     }
 552     else {
 553         if (cp[1] != '\0')
 554             stderror(ERR_NAME | ERR_STRING,
 555                      CGETS(23, 30, "Too many arguments"));
 556         else
 557             switch(*cp) {
 558             case '0':
 559                 dmmode(0);
 560                 break;
 561             case '1':
 562                 dmmode(1);
 563                 break;
 564             default:
 565                 stderror(ERR_NAME | ERR_STRING,
 566                          CGETS(23, 31, "Invalid argument"));
 567             }
 568     }
 569 }
 570 #endif /* _CRAY && !_CRAYMPP */
 571
 572
 573 /***
 574  *** CONVEX Warps.
 575  ***/
 576
 577 #ifdef WARP
 578 /*
 579  * handle the funky warping of symlinks
 580  */
 581 #include <warpdb.h>
 582 #include <sys/warp.h>
 583
 584 static jmp_buf sigsys_buf;
 585
 586 static  sigret_t
 587 catch_sigsys()
 588 {
 589     longjmp(sigsys_buf, 1);
 590 }
 591
 592
 593 /*ARGSUSED*/
 594 void
 595 dowarp(v, c)
 596     Char  **v;
 597     struct command *c;
 598 {
 599     int     warp, oldwarp;
 600     struct warpent *we;
 601     void    (*old_sigsys_handler) () = 0;
 602     char   *newwarp;
 603
 604     if (setjmp(sigsys_buf)) {
 605         signal(SIGSYS, old_sigsys_handler);
 606         stderror(ERR_NAME | ERR_STRING,
 607                  CGETS(23, 8, "You're trapped in a universe you never made"));
 608         return;
 609     }
 610     old_sigsys_handler = signal(SIGSYS, catch_sigsys);
 611
 612     warp = getwarp();
 613
 614     v++;
 615     if (*v == 0) {              /* display warp value */
 616         if (warp < 0)
 617             stderror(ERR_NAME | ERR_STRING, CGETS(23, 9, "Getwarp failed"));
 618         we = getwarpbyvalue(warp);
 619         if (we)
 620             printf("%s\n", we->w_name);
 621         else
 622             printf("%d\n", warp);
 623     }
 624     else {                      /* set warp value */
 625         oldwarp = warp;
 626         newwarp = short2str(*v);
 627         if (Isdigit(*v[0]))
 628             warp = atoi(newwarp);
 629         else {
 630             we = getwarpbyname(newwarp);
 631             if (we)
 632                 warp = we->w_value;
 633             else
 634                 warp = -1;
 635         }
 636         if ((warp < 0) || (warp >= WARP_MAXLINK))
 637             stderror(ERR_NAME | ERR_STRING, CGETS(23, 10, "Invalid warp"));
 638         if ((setwarp(warp) < 0) || (getwarp() != warp)) {
 639             (void) setwarp(oldwarp);
 640             stderror(ERR_NAME | ERR_STRING, CGETS(23, 11, "Setwarp failed"));
 641         }
 642     }
 643     signal(SIGSYS, old_sigsys_handler);
 644     return;
 645 }
 646 #endif /* WARP */
 647
 648 /***
 649  *** Masscomp or HCX
 650  ***/
 651 /* Added, DAS DEC-90. */
 652 #if defined(masscomp) || defined(_CX_UX)
 653 /*ARGSUSED*/
 654 void
 655 douniverse(v, c)
 656     register Char **v;
 657     struct command *c;
 658 {
 659     register Char *cp = v[1];
 660     register Char *cp2;         /* dunno how many elements v comes in with */
 661     char    ubuf[100];
 662 #ifdef BSDSIGS
 663     register sigmask_t omask = 0;
 664 #endif /* BSDSIGS */
 665
 666     if (cp == 0) {
 667         (void) getuniverse(ubuf);
 668         xprintf("%s\n", ubuf);
 669     }
 670     else {
 671         cp2 = v[2];
 672         if (cp2 == 0) {
 673             if (*cp == '\0' || setuniverse(short2str(cp)) != 0)
 674                 stderror(ERR_NAME | ERR_STRING, CGETS(23, 12, "Illegal universe"));
 675             }
 676         else {
 677             (void) getuniverse(ubuf);
 678             if (*cp == '\0' || setuniverse(short2str(cp)) != 0)
 679         stderror(ERR_NAME | ERR_STRING, CGETS(23, 12, "Illegal universe"));
 680             if (setintr)
 681 #ifdef BSDSIGS
 682                 omask = sigblock(sigmask(SIGINT)) & ~sigmask(SIGINT);
 683 #else /* !BSDSIGS */
 684                 (void) sighold(SIGINT);
 685 #endif /* BSDSIGS */
 686             lshift(v, 2);
 687             if (setintr)
 688 #ifdef BSDSIGS
 689                 (void) sigsetmask(omask);
 690 #else /* !BSDSIGS */
 691                 (void) sigrelse (SIGINT);
 692 #endif /* BSDSIGS */
 693             reexecute(c);
 694             (void) setuniverse(ubuf);
 695         }
 696     }
 697 }
 698 #endif /* masscomp || _CX_UX */
 699
 700 #if defined(_CX_UX)
 701 /*ARGSUSED*/
 702 void
 703 doatt(v, c)
 704     register Char **v;
 705     struct command *c;
 706 {
 707     register Char *cp = v[1];
 708     char    ubuf[100];
 709 #ifdef BSDSIGS
 710     register sigmask_t omask = 0;
 711 #endif /* BSDSIGS */
 712
 713     if (cp == 0)
 714         (void) setuniverse("att");
 715     else {
 716         (void) getuniverse(ubuf);
 717         (void) setuniverse("att");
 718         if (setintr)
 719 #ifdef BSDSIGS
 720             omask = sigblock(sigmask(SIGINT)) & ~sigmask(SIGINT);
 721 #else /* !BSDSIGS */
 722             (void) sighold(SIGINT);
 723 #endif /* BSDSIGS */
 724         lshift(v, 1);
 725         if (setintr)
 726 #ifdef BSDSIGS
 727             (void) sigsetmask(omask);
 728 #else /* !BSDSIGS */
 729             (void) sigrelse (SIGINT);
 730 #endif /* BSDSIGS */
 731         reexecute(c);
 732         (void) setuniverse(ubuf);
 733     }
 734 }
 735
 736 /*ARGSUSED*/
 737 void
 738 doucb(v, c)
 739     register Char **v;
 740     struct command *c;
 741 {
 742     register Char *cp = v[1];
 743     char    ubuf[100];
 744 #ifdef BSDSIGS
 745     register sigmask_t omask = 0;
 746 #endif /* BSDSIGS */
 747
 748     if (cp == 0)
 749         (void) setuniverse("ucb");
 750     else {
 751         (void) getuniverse(ubuf);
 752         (void) setuniverse("ucb");
 753         if (setintr)
 754 #ifdef BSDSIGS
 755             omask = sigblock(sigmask(SIGINT)) & ~sigmask(SIGINT);
 756 #else /* !BSDSIGS */
 757             (void) sighold(SIGINT);
 758 #endif /* BSDSIGS */
 759         lshift(v, 1);
 760         if (setintr)
 761 #ifdef BSDSIGS
 762             (void) sigsetmask(omask);
 763 #else /* !BSDSIGS */
 764             (void) sigrelse (SIGINT);
 765 #endif /* BSDSIGS */
 766         reexecute(c);
 767         (void) setuniverse(ubuf);
 768     }
 769 }
 770 #endif /* _CX_UX */
 771
 772 #ifdef _SEQUENT_
 773 /*
 774  * Compute the difference in process stats.
 775  */
 776 void
 777 pr_stat_sub(p2, p1, pr)
 778     struct process_stats *p2, *p1, *pr;
 779 {
 780     pr->ps_utime.tv_sec = p2->ps_utime.tv_sec - p1->ps_utime.tv_sec;
 781     pr->ps_utime.tv_usec = p2->ps_utime.tv_usec - p1->ps_utime.tv_usec;
 782     if (pr->ps_utime.tv_usec < 0) {
 783         pr->ps_utime.tv_sec -= 1;
 784         pr->ps_utime.tv_usec += 1000000;
 785     }
 786     pr->ps_stime.tv_sec = p2->ps_stime.tv_sec - p1->ps_stime.tv_sec;
 787     pr->ps_stime.tv_usec = p2->ps_stime.tv_usec - p1->ps_stime.tv_usec;
 788     if (pr->ps_stime.tv_usec < 0) {
 789         pr->ps_stime.tv_sec -= 1;
 790         pr->ps_stime.tv_usec += 1000000;
 791     }
 792
 793     pr->ps_maxrss = p2->ps_maxrss - p1->ps_maxrss;
 794     pr->ps_pagein = p2->ps_pagein - p1->ps_pagein;
 795     pr->ps_reclaim = p2->ps_reclaim - p1->ps_reclaim;
 796     pr->ps_zerofill = p2->ps_zerofill - p1->ps_zerofill;
 797     pr->ps_pffincr = p2->ps_pffincr - p1->ps_pffincr;
 798     pr->ps_pffdecr = p2->ps_pffdecr - p1->ps_pffdecr;
 799     pr->ps_swap = p2->ps_swap - p1->ps_swap;
 800     pr->ps_syscall = p2->ps_syscall - p1->ps_syscall;
 801     pr->ps_volcsw = p2->ps_volcsw - p1->ps_volcsw;
 802     pr->ps_involcsw = p2->ps_involcsw - p1->ps_involcsw;
 803     pr->ps_signal = p2->ps_signal - p1->ps_signal;
 804     pr->ps_lread = p2->ps_lread - p1->ps_lread;
 805     pr->ps_lwrite = p2->ps_lwrite - p1->ps_lwrite;
 806     pr->ps_bread = p2->ps_bread - p1->ps_bread;
 807     pr->ps_bwrite = p2->ps_bwrite - p1->ps_bwrite;
 808     pr->ps_phread = p2->ps_phread - p1->ps_phread;
 809     pr->ps_phwrite = p2->ps_phwrite - p1->ps_phwrite;
 810 }
 811
 812 #endif /* _SEQUENT_ */
 813
 814
 815 #ifdef NEEDmemset
 816 /* This is a replacement for a missing memset function */
 817 ptr_t xmemset(loc, value, len)
 818     ptr_t loc;
 819     int len;
 820     size_t value;
 821 {
 822     char *ptr = (char *) loc;
 823
 824     while (len--)
 825         *ptr++ = value;
 826     return loc;
 827 }
 828 #endif /* NEEDmemset */
 829
 830
 831 #ifdef NEEDmemmove
 832 /* memmove():
 833  *      This is the ANSI form of bcopy() with the arguments backwards...
 834  *      Unlike memcpy(), it handles overlaps between source and
 835  *      destination memory
 836  */
 837 ptr_t
 838 xmemmove(vdst, vsrc, len)
 839     ptr_t vdst;
 840     const ptr_t vsrc;
 841     size_t len;
 842 {
 843     const char *src = (const char *) vsrc;
 844     char *dst = (char *) vdst;
 845
 846     if (src == dst)
 847         return vdst;
 848
 849     if (src > dst) {
 850         while (len--)
 851             *dst++ = *src++;
 852     }
 853     else {
 854         src += len;
 855         dst += len;
 856         while (len--)
 857             *--dst = *--src;
 858     }
 859     return vdst;
 860 }
 861 #endif /* NEEDmemmove */
 862
 863
 864 #ifndef WINNT_NATIVE
 865 #ifdef tcgetpgrp
 866 int
 867 xtcgetpgrp(fd)
 868     int     fd;
 869 {
 870     int     pgrp;
 871
 872     /* ioctl will handle setting errno correctly. */
 873     if (ioctl(fd, TIOCGPGRP, (ioctl_t) & pgrp) < 0)
 874         return (-1);
 875     return (pgrp);
 876 }
 877
 878 /*
 879  * XXX: tcsetpgrp is not a macro any more cause on some systems,
 880  * pid_t is a short, but the ioctl() takes a pointer to int (pyr)
 881  * Thanks to Simon Day (simon@pharaoh.cyborg.bt.co.uk) for pointing
 882  * this out.
 883  */
 884 int
 885 xtcsetpgrp(fd, pgrp)
 886     int fd, pgrp;
 887 {
 888     return ioctl(fd, TIOCSPGRP, (ioctl_t) &pgrp);
 889 }
 890
 891 #endif  /* tcgetpgrp */
 892 #endif /* WINNT_NATIVE */
 893
 894
 895 #ifdef YPBUGS
 896 void
 897 fix_yp_bugs()
 898 {
 899     char   *mydomain;
 900
 901     extern int yp_get_default_domain __P((char **));
 902     /*
 903      * PWP: The previous version assumed that yp domain was the same as the
 904      * internet name domain.  This isn't allways true. (Thanks to Mat Landau
 905      * <mlandau@bbn.com> for the original version of this.)
 906      */
 907     if (yp_get_default_domain(&mydomain) == 0) {        /* if we got a name */
 908         extern void yp_unbind __P((const char *));
 909
 910         yp_unbind(mydomain);
 911     }
 912 }
 913
 914 #endif /* YPBUGS */
 915
 916 #ifdef STRCOLLBUG
 917 void
 918 fix_strcoll_bug()
 919 {
 920 #if defined(NLS) && !defined(NOSTRCOLL)
 921     /*
 922      * SunOS4 checks the file descriptor from openlocale() for <= 0
 923      * instead of == -1. Someone should tell sun that file descriptor 0
 924      * is valid! Our portable hack: open one so we call it with 0 used...
 925      * We have to call this routine every time the locale changes...
 926      *
 927      * Of course it also tries to free the constant locale "C" it initially
 928      * had allocated, with the sequence
 929      * > setenv LANG "fr"
 930      * > ls^D
 931      * > unsetenv LANG
 932      * But we are smarter than that and just print a warning message.
 933      */
 934     int fd = -1;
 935     static char *root = "/";
 936
 937     if (!didfds)
 938         fd = open(root, O_RDONLY);
 939
 940     (void) strcoll(root, root);
 941
 942     if (fd != -1)
 943         (void) close(fd);
 944 #endif
 945 }
 946 #endif /* STRCOLLBUG */
 947
 948
 949 #ifdef OREO
 950 #include <compat.h>
 951 #endif /* OREO */
 952
 953 void
 954 osinit()
 955 {
 956 #ifdef OREO
 957     set42sig();
 958     setcompat(getcompat() & ~COMPAT_EXEC);
 959     sigignore(SIGIO);           /* ignore SIGIO */
 960 #endif /* OREO */
 961
 962 #ifdef aiws
 963     {
 964         struct sigstack inst;
 965         inst.ss_sp = (char *) xmalloc((size_t) 4192) + 4192;
 966         inst.ss_onstack = 0;
 967         sigstack(&inst, NULL);
 968     }
 969 #endif /* aiws */
 970
 971 #ifdef apollo
 972     (void) isapad();
 973 #endif
 974
 975 #ifdef _SX
 976     /*
 977      * kill(SIGCONT) problems, don't know what this syscall does
 978      * [schott@rzg.mpg.de]
 979      */
 980     syscall(151, getpid(), getpid());
 981 #endif /* _SX */
 982 }
 983
 984 #ifdef strerror
 985 char *
 986 xstrerror(i)
 987     int i;
 988 {
 989     static char errbuf[128];
 990
 991     if (i >= 0 && i < sys_nerr) {
 992         return sys_errlist[i];
 993     } else {
 994         (void) xsnprintf(errbuf, sizeof(errbuf),
 995             CGETS(23, 13, "Unknown Error: %d"), i);
 996         return errbuf;
 997     }
 998 }
 999 #endif /* strerror */
1000
1001 #ifdef gethostname
1002 # if !defined(_MINIX) && !defined(__EMX__) && !defined(WINNT_NATIVE)
1003 #  include <sys/utsname.h>
1004 # endif /* !_MINIX && !__EMX__ && !WINNT_NATIVE */
1005
1006 int
1007 xgethostname(name, namlen)
1008     char   *name;
1009     int     namlen;
1010 {
1011 # if !defined(_MINIX) && !defined(__EMX__) && !defined(WINNT_NATIVE)
1012     int     i, retval;
1013     struct utsname uts;
1014
1015     retval = uname(&uts);
1016
1017 #  ifdef DEBUG
1018     xprintf(CGETS(23, 14, "sysname:  %s\n"), uts.sysname);
1019     xprintf(CGETS(23, 15, "nodename: %s\n"), uts.nodename);
1020     xprintf(CGETS(23, 16, "release:  %s\n"), uts.release);
1021     xprintf(CGETS(23, 17, "version:  %s\n"), uts.version);
1022     xprintf(CGETS(23, 18, "machine:  %s\n"), uts.machine);
1023 #  endif /* DEBUG */
1024     i = strlen(uts.nodename) + 1;
1025     (void) strncpy(name, uts.nodename, i < namlen ? i : namlen);
1026
1027     return retval;
1028 # else /* !_MINIX && !__EMX__ */
1029     if (namlen > 0) {
1030 #  ifdef __EMX__
1031         (void) strncpy(name, "OS/2", namlen);
1032 #  else /* _MINIX */
1033         (void) strncpy(name, "minix", namlen);
1034 #  endif /* __EMX__ */
1035         name[namlen-1] = '\0';
1036     }
1037     return(0);
1038 #endif /* _MINIX && !__EMX__ */
1039 } /* end xgethostname */
1040 #endif /* gethostname */
1041
1042 #ifdef nice
1043 # if defined(_MINIX) && defined(NICE)
1044 #  undef _POSIX_SOURCE  /* redefined in <lib.h> */
1045 #  undef _MINIX         /* redefined in <lib.h> */
1046 #  undef HZ             /* redefined in <minix/const.h> */
1047 #  include <lib.h>
1048 # endif /* _MINIX && NICE */
1049 int
1050 xnice(incr)
1051     int incr;
1052 {
1053 #if defined(_MINIX) && defined(NICE)
1054     return callm1(MM, NICE, incr, 0, 0, NIL_PTR, NIL_PTR, NIL_PTR);
1055 #else
1056     return /* incr ? 0 : */ 0;
1057 #endif /* _MINIX && NICE */
1058 } /* end xnice */
1059 #endif /* nice */
1060
1061 #ifdef NEEDgetcwd
1062 static char *strnrcpy __P((char *, char *, size_t));
1063
1064 /* xgetcwd():
1065  *      Return the pathname of the current directory, or return
1066  *      an error message in pathname.
1067  */
1068
1069 # ifdef hp9000s500
1070 /*
1071  *  From: Bernd Mohr <mohr@faui77.informatik.uni-erlangen.de>
1072  *  I also ported the tcsh to the HP9000 Series 500. This computer
1073  *  is a little bit different than the other HP 9000 computer. It has
1074  *  a HP Chip instead of a Motorola CPU and it is no "real" UNIX. It runs
1075  *  HP-UX which is emulated in top of a HP operating system. So, the last
1076  *  supported version of HP-UX is 5.2 on the HP9000s500. This has two
1077  *  consequences: it supports no job control and it has a filesystem
1078  *  without "." and ".." !!!
1079  */
1080 char *
1081 xgetcwd(pathname, pathlen)
1082     char *pathname;
1083     size_t pathlen;
1084 {
1085     char pathbuf[MAXNAMLEN];    /* temporary pathname buffer */
1086     char *pnptr = &pathbuf[(sizeof pathbuf)-1]; /* pathname pointer */
1087     dev_t rdev;                 /* root device number */
1088     DIR *dirp = NULL;           /* directory stream */
1089     ino_t rino;                 /* root inode number */
1090     off_t rsize;                /* root size */
1091     struct direct *dir;         /* directory entry struct */
1092     struct stat d, dd;          /* file status struct */
1093     int serrno;
1094
1095     *pnptr = '\0';
1096     (void) stat("/.", &d);
1097     rdev = d.st_dev;
1098     rino = d.st_ino;
1099     rsize = d.st_size;
1100     for (;;) {
1101         if (stat(".", &d) == -1) {
1102             (void) xsnprintf(pathname, pathlen, CGETS(23, 24,
1103                 "getcwd: Cannot stat \".\" (%s)"), strerror(errno));
1104             goto fail;
1105         }
1106         if (d.st_ino == rino && d.st_dev == rdev && d.st_size == rsize)
1107             break;              /* reached root directory */
1108         if ((dirp = opendir("..")) == NULL) {
1109             (void) xsnprintf(pathname, pathlen, CGETS(23, 19,
1110                 "getcwd: Cannot open \"..\" (%s)"), strerror(errno));
1111             goto fail;
1112         }
1113         if (chdir("..") == -1) {
1114             (void) xsnprintf(pathname, pathlen, CGETS(23, 20,
1115                 "getcwd: Cannot chdir to \"..\" (%s)"), strerror(errno));
1116             goto fail;
1117         }
1118         do {
1119             if ((dir = readdir(dirp)) == NULL) {
1120                 (void) xsnprintf(pathname, pathlen,
1121                     CGETS(23, 21, "getcwd: Read error in \"..\" (%s)"),
1122                     strerror(errno));
1123                 goto fail;
1124             }
1125             if (stat(dir->d_name, &dd) == -1) {
1126                 (void) xsnprintf(pathname, pathlen,
1127                     CGETS(23, 25, "getcwd: Cannot stat directory \"%s\" (%s)"),
1128                     dir->d_name, strerror(errno));
1129                 goto fail;
1130             }
1131         } while (dd.st_ino  != d.st_ino  ||
1132                  dd.st_dev  != d.st_dev  ||
1133                  dd.st_size != d.st_size);
1134         (void) closedir(dirp);
1135         dirp = NULL;
1136         pnptr = strnrcpy(dirp->d_name, pnptr, pnptr - pathbuf);
1137         pnptr = strnrcpy("/", pnptr, pnptr - pathbuf);
1138     }
1139
1140     if (*pnptr == '\0')         /* current dir == root dir */
1141         (void) strncpy(pathname, "/", pathlen);
1142     else {
1143         (void) strncpy(pathname, pnptr, pathlen);
1144         pathname[pathlen - 1] = '\0';
1145         if (chdir(pnptr) == -1) {
1146             (void) xsnprintf(pathname, MAXPATHLEN, CGETS(23, 22,
1147                     "getcwd: Cannot change back to \".\" (%s)"),
1148                     strerror(errno));
1149             return NULL;
1150         }
1151     }
1152     return pathname;
1153
1154 fail:
1155     serrno = errno;
1156     (void) chdir(strnrcpy(".", pnptr, pnptr - pathbuf));
1157     errno = serrno;
1158     return NULL;
1159 }
1160
1161 # else /* ! hp9000s500 */
1162
1163 #  if (SYSVREL != 0 && !defined(d_fileno)) || defined(_VMS_POSIX) || defined(WINNT) || defined(_MINIX_VMD)
1164 #   define d_fileno d_ino
1165 #  endif
1166
1167 char *
1168 xgetcwd(pathname, pathlen)
1169     char   *pathname;
1170     size_t pathlen;
1171 {
1172     DIR    *dp;
1173     struct dirent *d;
1174
1175     struct stat st_root, st_cur, st_next, st_dotdot;
1176     char    pathbuf[MAXPATHLEN], nextpathbuf[MAXPATHLEN * 2];
1177     char   *pathptr, *nextpathptr, *cur_name_add;
1178     int    save_errno = 0;
1179
1180     /* find the inode of root */
1181     if (stat("/", &st_root) == -1) {
1182         (void) xsnprintf(pathname, pathlen, CGETS(23, 23,
1183                         "getcwd: Cannot stat \"/\" (%s)"),
1184                         strerror(errno));
1185         return NULL;
1186     }
1187     pathbuf[MAXPATHLEN - 1] = '\0';
1188     pathptr = &pathbuf[MAXPATHLEN - 1];
1189     nextpathbuf[MAXPATHLEN - 1] = '\0';
1190     cur_name_add = nextpathptr = &nextpathbuf[MAXPATHLEN - 1];
1191
1192     /* find the inode of the current directory */
1193     if (lstat(".", &st_cur) == -1) {
1194         (void) xsnprintf(pathname, pathlen, CGETS(23, 24,
1195                          "getcwd: Cannot stat \".\" (%s)"),
1196                          strerror(errno));
1197         return NULL;
1198     }
1199     nextpathptr = strnrcpy(nextpathptr, "../", nextpathptr - nextpathbuf);
1200
1201     /* Descend to root */
1202     for (;;) {
1203
1204         /* look if we found root yet */
1205         if (st_cur.st_ino == st_root.st_ino &&
1206             DEV_DEV_COMPARE(st_cur.st_dev, st_root.st_dev)) {
1207             (void) strncpy(pathname, *pathptr != '/' ? "/" : pathptr, pathlen);
1208             pathname[pathlen - 1] = '\0';
1209             return pathname;
1210         }
1211
1212         /* open the parent directory */
1213         if (stat(nextpathptr, &st_dotdot) == -1) {
1214             (void) xsnprintf(pathname, pathlen, CGETS(23, 25,
1215                              "getcwd: Cannot stat directory \"%s\" (%s)"),
1216                              nextpathptr, strerror(errno));
1217             return NULL;
1218         }
1219         if ((dp = opendir(nextpathptr)) == NULL) {
1220             (void) xsnprintf(pathname, pathlen, CGETS(23, 26,
1221                              "getcwd: Cannot open directory \"%s\" (%s)"),
1222                              nextpathptr, strerror(errno));
1223             return NULL;
1224         }
1225
1226         /* look in the parent for the entry with the same inode */
1227         if (DEV_DEV_COMPARE(st_dotdot.st_dev, st_cur.st_dev)) {
1228             /* Parent has same device. No need to stat every member */
1229             for (d = readdir(dp); d != NULL; d = readdir(dp)) {
1230 #ifdef __clipper__
1231                 if (((unsigned long)d->d_fileno & 0xffff) == st_cur.st_ino)
1232                     break;
1233 #else
1234                 if (d->d_fileno == st_cur.st_ino)
1235                     break;
1236 #endif
1237             }
1238         }
1239         else {
1240             /*
1241              * Parent has a different device. This is a mount point so we
1242              * need to stat every member
1243              */
1244             for (d = readdir(dp); d != NULL; d = readdir(dp)) {
1245                 if (ISDOT(d->d_name) || ISDOTDOT(d->d_name))
1246                     continue;
1247                 (void)strncpy(cur_name_add, d->d_name,
1248                     (size_t) (&nextpathbuf[sizeof(nextpathbuf) - 1] - cur_name_add));
1249                 if (lstat(nextpathptr, &st_next) == -1) {
1250                     /*
1251                      * We might not be able to stat() some path components
1252                      * if we are using afs, but this is not an error as
1253                      * long as we find the one we need; we also save the
1254                      * first error to report it if we don't finally succeed.
1255                      */
1256                     if (save_errno == 0)
1257                         save_errno = errno;
1258                     continue;
1259                 }
1260                 /* check if we found it yet */
1261                 if (st_next.st_ino == st_cur.st_ino &&
1262                     DEV_DEV_COMPARE(st_next.st_dev, st_cur.st_dev))
1263                     break;
1264             }
1265         }
1266         if (d == NULL) {
1267             (void) xsnprintf(pathname, pathlen, CGETS(23, 27,
1268                              "getcwd: Cannot find \".\" in \"..\" (%s)"),
1269                              strerror(save_errno ? save_errno : ENOENT));
1270             (void) closedir(dp);
1271             return NULL;
1272         }
1273         else
1274             save_errno = 0;
1275         st_cur = st_dotdot;
1276         pathptr = strnrcpy(pathptr, d->d_name, pathptr - pathbuf);
1277         pathptr = strnrcpy(pathptr, "/", pathptr - pathbuf);
1278         nextpathptr = strnrcpy(nextpathptr, "../", nextpathptr - nextpathbuf);
1279         *cur_name_add = '\0';
1280         (void) closedir(dp);
1281     }
1282 } /* end getcwd */
1283 # endif /* hp9000s500 */
1284
1285 /* strnrcpy():
1286  *      Like strncpy, going backwards and returning the new pointer
1287  */
1288 static char *
1289 strnrcpy(ptr, str, siz)
1290     register char *ptr, *str;
1291     size_t siz;
1292 {
1293     register int len = strlen(str);
1294     if (siz == 0)
1295         return ptr;
1296
1297     while (len && siz--)
1298         *--ptr = str[--len];
1299
1300     return (ptr);
1301 } /* end strnrcpy */
1302 #endif /* getcwd */
1303
1304 #ifdef apollo
1305 /***
1306  *** Domain/OS
1307  ***/
1308 #include <apollo/base.h>
1309 #include <apollo/loader.h>
1310 #include <apollo/error.h>
1311
1312
1313 static char *
1314 apperr(st)
1315     status_$t *st;
1316 {
1317     static char buf[BUFSIZE];
1318     short e_subl, e_modl, e_codel;
1319     error_$string_t e_sub, e_mod, e_code;
1320
1321     error_$get_text(*st, e_sub, &e_subl, e_mod, &e_modl, e_code, &e_codel);
1322     e_sub[e_subl] = '\0';
1323     e_code[e_codel] = '\0';
1324     e_mod[e_modl] = '\0';
1325     (void) xsnprintf(buf, sizeof(buf), "%s (%s/%s)", e_code, e_sub, e_mod);
1326
1327     return(buf);
1328 }
1329
1330 static int
1331 llib(s)
1332     Char *s;
1333 {
1334     short len = Strlen(s);
1335     status_$t st;
1336     char *t;
1337
1338     loader_$inlib(t = short2str(s), len, &st);
1339     if (st.all != status_$ok)
1340         stderror(ERR_SYSTEM, t, apperr(&st));
1341 }
1342
1343 /*ARGSUSED*/
1344 void
1345 doinlib(v, c)
1346     Char **v;
1347     struct command *c;
1348 {
1349     setname(short2str(*v++));
1350     gflag = 0, tglob(v);
1351     if (gflag) {
1352         v = globall(v);
1353         if (v == 0)
1354             stderror(ERR_NAME | ERR_NOMATCH);
1355     }
1356     else {
1357         v = gargv = saveblk(v);
1358         trim(v);
1359     }
1360
1361     while (v && *v)
1362         llib(*v++);
1363     if (gargv)
1364         blkfree(gargv), gargv = 0;
1365 }
1366
1367 int
1368 getv(v)
1369     Char *v;
1370 {
1371     if (eq(v, STRbsd43))
1372         return(1);
1373     else if (eq(v, STRsys53))
1374         return(0);
1375     else
1376         stderror(ERR_NAME | ERR_SYSTEM, short2str(v),
1377                  CGETS(23, 28, "Invalid system type"));
1378     /*NOTREACHED*/
1379     return(0);
1380 }
1381
1382 /*ARGSUSED*/
1383 void
1384 dover(v, c)
1385     Char **v;
1386     struct command *c;
1387 {
1388     Char *p;
1389
1390     setname(short2str(*v++));
1391     if (!*v) {
1392         if (!(p = tgetenv(STRSYSTYPE)))
1393             stderror(ERR_NAME | ERR_STRING,
1394                      CGETS(23, 29, "System type is not set"));
1395         xprintf("%S\n", p);
1396     }
1397     else {
1398         tsetenv(STRSYSTYPE, getv(*v) ? STRbsd43 : STRsys53);
1399         dohash(NULL, NULL);
1400     }
1401 }
1402
1403 /*
1404  * Many thanks to rees@citi.umich.edu (Jim Rees) and
1405  *                mathys@ssdt-tempe.sps.mot.com (Yves Mathys)
1406  * For figuring out how to do this... I could have never done
1407  * it without their help.
1408  */
1409 typedef short enum {
1410         name_$wdir_type,
1411         name_$ndir_type,
1412         name_$node_dir_type,
1413 } name_$dir_type_t;
1414
1415 /*ARGSUSED*/
1416 void
1417 dorootnode(v, c)
1418     Char **v;
1419     struct command *c;
1420 {
1421     name_$dir_type_t dirtype = name_$node_dir_type;
1422     uid_$t uid;
1423     status_$t st;
1424     char *name;
1425     short namelen;
1426
1427     setname(short2str(*v++));
1428
1429     name = short2str(*v);
1430     namelen = strlen(name);
1431
1432     name_$resolve(name, &namelen, &uid, &st);
1433     if (st.all != status_$ok)
1434         stderror(ERR_SYSTEM, name, apperr(&st));
1435     namelen = 0;
1436     name_$set_diru(&uid, "", &namelen, &dirtype, &st);
1437     if (st.all != status_$ok)
1438         stderror(ERR_SYSTEM, name, apperr(&st));
1439     dohash(NULL, NULL);
1440 }
1441
1442 int
1443 isapad()
1444 {
1445     static int res = -1;
1446     static status_$t st;
1447
1448     if (res == -1) {
1449         int strm;
1450         if (isatty(0))
1451             strm = 0;
1452         if (isatty(1))
1453             strm = 1;
1454         if (isatty(2))
1455             strm = 2;
1456         else {
1457             res = 0;
1458             st.all = status_$ok;
1459             return(res);
1460         }
1461         res = stream_$isavt(&strm, &st);
1462         res = res ? 1 : 0;
1463     }
1464     else {
1465         if (st.all != status_$ok)
1466             stderror(ERR_SYSTEM, "stream_$isavt", apperr(&st));
1467     }
1468     return(res);
1469 }
1470 #endif