restore/interactive.c

   1 /*
   2  *      Ported to Linux's Second Extended File System as part of the
   3  *      dump and restore backup suit
   4  *      Remy Card <card@Linux.EU.Org>, 1994-1997
   5  *      Stelian Pop <pop@cybercable.fr>, 1999
   6  *
   7  */
   8
   9 /*
  10  * Copyright (c) 1985, 1993
  11  *      The Regents of the University of California.  All rights reserved.
  12  *
  13  * Redistribution and use in source and binary forms, with or without
  14  * modification, are permitted provided that the following conditions
  15  * are met:
  16  * 1. Redistributions of source code must retain the above copyright
  17  *    notice, this list of conditions and the following disclaimer.
  18  * 2. Redistributions in binary form must reproduce the above copyright
  19  *    notice, this list of conditions and the following disclaimer in the
  20  *    documentation and/or other materials provided with the distribution.
  21  * 3. All advertising materials mentioning features or use of this software
  22  *    must display the following acknowledgement:
  23  *      This product includes software developed by the University of
  24  *      California, Berkeley and its contributors.
  25  * 4. Neither the name of the University nor the names of its contributors
  26  *    may be used to endorse or promote products derived from this software
  27  *    without specific prior written permission.
  28  *
  29  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  30  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  31  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  32  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  33  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  34  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  35  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  36  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  37  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  38  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  39  * SUCH DAMAGE.
  40  */
  41
  42 #ifndef lint
  43 #if 0
  44 static char sccsid[] = "@(#)interactive.c       8.5 (Berkeley) 5/1/95";
  45 #endif
  46 static const char rcsid[] =
  47         "$Id: interactive.c,v 1.4 1999/10/11 13:08:09 stelian Exp $";
  48 #endif /* not lint */
  49
  50 #include <sys/param.h>
  51 #include <sys/stat.h>
  52
  53 #ifdef  __linux__
  54 #include <linux/ext2_fs.h>
  55 #include <bsdcompat.h>
  56 #else   /* __linux__ */
  57 #include <ufs/ufs/dinode.h>
  58 #include <ufs/ufs/dir.h>
  59 #endif  /* __linux__ */
  60 #include <protocols/dumprestore.h>
  61
  62 #include <setjmp.h>
  63 #include <compaterr.h>
  64 #include <errno.h>
  65 #include <compatglob.h>
  66 #include <stdio.h>
  67 #include <stdlib.h>
  68 #include <string.h>
  69
  70 #ifdef  __linux__
  71 #include <ext2fs/ext2fs.h>
  72 extern char * __progname;
  73 #endif
  74
  75 #include "restore.h"
  76 #include "extern.h"
  77
  78 #define round(a, b) (((a) + (b) - 1) / (b) * (b))
  79
  80 /*
  81  * Things to handle interruptions.
  82  */
  83 static int runshell;
  84 static jmp_buf reset;
  85 static char *nextarg = NULL;
  86
  87 /*
  88  * Structure and routines associated with listing directories.
  89  */
  90 struct afile {
  91         ino_t   fnum;           /* inode number of file */
  92         char    *fname;         /* file name */
  93         short   len;            /* name length */
  94         char    prefix;         /* prefix character */
  95         char    postfix;        /* postfix character */
  96 };
  97 struct arglist {
  98         int     freeglob;       /* glob structure needs to be freed */
  99         int     argcnt;         /* next globbed argument to return */
 100         glob_t  glob;           /* globbing information */
 101         char    *cmd;           /* the current command */
 102 };
 103
 104 static char     *copynext __P((char *, char *));
 105 static int       fcmp __P((const void *, const void *));
 106 static void      formatf __P((struct afile *, int));
 107 static void      getcmd __P((char *, char *, char *, int, struct arglist *));
 108 struct dirent   *glob_readdir __P((RST_DIR *dirp));
 109 static int       glob_stat __P((const char *, struct stat *));
 110 static void      mkentry __P((char *, struct direct *, struct afile *));
 111 static void      printlist __P((char *, char *));
 112
 113 /*
 114  * Read and execute commands from the terminal.
 115  */
 116 void
 117 runcmdshell(void)
 118 {
 119         register struct entry *np;
 120         ino_t ino;
 121         struct arglist arglist;
 122         char curdir[MAXPATHLEN];
 123         char name[MAXPATHLEN];
 124         char cmd[BUFSIZ];
 125
 126         arglist.freeglob = 0;
 127         arglist.argcnt = 0;
 128         arglist.glob.gl_flags = GLOB_ALTDIRFUNC;
 129         arglist.glob.gl_opendir = (void *)rst_opendir;
 130         arglist.glob.gl_readdir = (void *)glob_readdir;
 131         arglist.glob.gl_closedir = (void *)rst_closedir;
 132         arglist.glob.gl_lstat = glob_stat;
 133         arglist.glob.gl_stat = glob_stat;
 134         canon("/", curdir, sizeof(curdir));
 135 loop:
 136         if (setjmp(reset) != 0) {
 137                 if (arglist.freeglob != 0) {
 138                         arglist.freeglob = 0;
 139                         arglist.argcnt = 0;
 140                         globfree(&arglist.glob);
 141                 }
 142                 nextarg = NULL;
 143                 volno = 0;
 144         }
 145         runshell = 1;
 146         getcmd(curdir, cmd, name, sizeof(name), &arglist);
 147         switch (cmd[0]) {
 148         /*
 149          * Add elements to the extraction list.
 150          */
 151         case 'a':
 152                 if (strncmp(cmd, "add", strlen(cmd)) != 0)
 153                         goto bad;
 154                 ino = dirlookup(name);
 155                 if (ino == 0)
 156                         break;
 157                 if (mflag)
 158                         pathcheck(name);
 159                 treescan(name, ino, addfile);
 160                 break;
 161         /*
 162          * Change working directory.
 163          */
 164         case 'c':
 165                 if (strncmp(cmd, "cd", strlen(cmd)) != 0)
 166                         goto bad;
 167                 ino = dirlookup(name);
 168                 if (ino == 0)
 169                         break;
 170                 if (inodetype(ino) == LEAF) {
 171                         fprintf(stderr, "%s: not a directory\n", name);
 172                         break;
 173                 }
 174                 (void) strncpy(curdir, name, sizeof(curdir));
 175                 curdir[sizeof(curdir) - 1] = '\0';
 176                 break;
 177         /*
 178          * Delete elements from the extraction list.
 179          */
 180         case 'd':
 181                 if (strncmp(cmd, "delete", strlen(cmd)) != 0)
 182                         goto bad;
 183                 np = lookupname(name);
 184                 if (np == NULL || (np->e_flags & NEW) == 0) {
 185                         fprintf(stderr, "%s: not on extraction list\n", name);
 186                         break;
 187                 }
 188                 treescan(name, np->e_ino, deletefile);
 189                 break;
 190         /*
 191          * Extract the requested list.
 192          */
 193         case 'e':
 194                 if (strncmp(cmd, "extract", strlen(cmd)) != 0)
 195                         goto bad;
 196                 createfiles();
 197                 createlinks();
 198                 setdirmodes(0);
 199                 if (dflag)
 200                         checkrestore();
 201                 volno = 0;
 202                 break;
 203         /*
 204          * List available commands.
 205          */
 206         case 'h':
 207                 if (strncmp(cmd, "help", strlen(cmd)) != 0)
 208                         goto bad;
 209         case '?':
 210                 fprintf(stderr, "%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s",
 211                         "Available commands are:\n",
 212                         "\tls [arg] - list directory\n",
 213                         "\tcd arg - change directory\n",
 214                         "\tpwd - print current directory\n",
 215                         "\tadd [arg] - add `arg' to list of",
 216                         " files to be extracted\n",
 217                         "\tdelete [arg] - delete `arg' from",
 218                         " list of files to be extracted\n",
 219                         "\textract - extract requested files\n",
 220                         "\tsetmodes - set modes of requested directories\n",
 221                         "\tquit - immediately exit program\n",
 222                         "\twhat - list dump header information\n",
 223                         "\tverbose - toggle verbose flag",
 224                         " (useful with ``ls'')\n",
 225                         "\thelp or `?' - print this list\n",
 226                         "If no `arg' is supplied, the current",
 227                         " directory is used\n");
 228                 break;
 229         /*
 230          * List a directory.
 231          */
 232         case 'l':
 233                 if (strncmp(cmd, "ls", strlen(cmd)) != 0)
 234                         goto bad;
 235                 printlist(name, curdir);
 236                 break;
 237         /*
 238          * Print current directory.
 239          */
 240         case 'p':
 241                 if (strncmp(cmd, "pwd", strlen(cmd)) != 0)
 242                         goto bad;
 243                 if (curdir[1] == '\0')
 244                         fprintf(stderr, "/\n");
 245                 else
 246                         fprintf(stderr, "%s\n", &curdir[1]);
 247                 break;
 248         /*
 249          * Quit.
 250          */
 251         case 'q':
 252                 if (strncmp(cmd, "quit", strlen(cmd)) != 0)
 253                         goto bad;
 254                 return;
 255         case 'x':
 256                 if (strncmp(cmd, "xit", strlen(cmd)) != 0)
 257                         goto bad;
 258                 return;
 259         /*
 260          * Toggle verbose mode.
 261          */
 262         case 'v':
 263                 if (strncmp(cmd, "verbose", strlen(cmd)) != 0)
 264                         goto bad;
 265                 if (vflag) {
 266                         fprintf(stderr, "verbose mode off\n");
 267                         vflag = 0;
 268                         break;
 269                 }
 270                 fprintf(stderr, "verbose mode on\n");
 271                 vflag++;
 272                 break;
 273         /*
 274          * Just restore requested directory modes.
 275          */
 276         case 's':
 277                 if (strncmp(cmd, "setmodes", strlen(cmd)) != 0)
 278                         goto bad;
 279                 setdirmodes(FORCE);
 280                 break;
 281         /*
 282          * Print out dump header information.
 283          */
 284         case 'w':
 285                 if (strncmp(cmd, "what", strlen(cmd)) != 0)
 286                         goto bad;
 287                 printdumpinfo();
 288                 break;
 289         /*
 290          * Turn on debugging.
 291          */
 292         case 'D':
 293                 if (strncmp(cmd, "Debug", strlen(cmd)) != 0)
 294                         goto bad;
 295                 if (dflag) {
 296                         fprintf(stderr, "debugging mode off\n");
 297                         dflag = 0;
 298                         break;
 299                 }
 300                 fprintf(stderr, "debugging mode on\n");
 301                 dflag++;
 302                 break;
 303         /*
 304          * Unknown command.
 305          */
 306         default:
 307         bad:
 308                 fprintf(stderr, "%s: unknown command; type ? for help\n", cmd);
 309                 break;
 310         }
 311         goto loop;
 312 }
 313
 314 /*
 315  * Read and parse an interactive command.
 316  * The first word on the line is assigned to "cmd". If
 317  * there are no arguments on the command line, then "curdir"
 318  * is returned as the argument. If there are arguments
 319  * on the line they are returned one at a time on each
 320  * successive call to getcmd. Each argument is first assigned
 321  * to "name". If it does not start with "/" the pathname in
 322  * "curdir" is prepended to it. Finally "canon" is called to
 323  * eliminate any embedded ".." components.
 324  */
 325 static void
 326 getcmd(char *curdir, char *cmd, char *name, int size, struct arglist *ap)
 327 {
 328         register char *cp;
 329         static char input[BUFSIZ];
 330         char output[BUFSIZ];
 331 #       define rawname input    /* save space by reusing input buffer */
 332
 333         /*
 334          * Check to see if still processing arguments.
 335          */
 336         if (ap->argcnt > 0)
 337                 goto retnext;
 338         if (nextarg != NULL)
 339                 goto getnext;
 340         /*
 341          * Read a command line and trim off trailing white space.
 342          */
 343         do      {
 344                 fprintf(stderr, "%s > ", __progname);
 345                 (void) fflush(stderr);
 346                 (void) fgets(input, BUFSIZ, terminal);
 347         } while (!feof(terminal) && input[0] == '\n');
 348         if (feof(terminal)) {
 349                 (void) strcpy(cmd, "quit");
 350                 return;
 351         }
 352         for (cp = &input[strlen(input) - 2]; *cp == ' ' || *cp == '\t'; cp--)
 353                 /* trim off trailing white space and newline */;
 354         *++cp = '\0';
 355         /*
 356          * Copy the command into "cmd".
 357          */
 358         cp = copynext(input, cmd);
 359         ap->cmd = cmd;
 360         /*
 361          * If no argument, use curdir as the default.
 362          */
 363         if (*cp == '\0') {
 364                 (void) strncpy(name, curdir, size);
 365                 name[size - 1] = '\0';
 366                 return;
 367         }
 368         nextarg = cp;
 369         /*
 370          * Find the next argument.
 371          */
 372 getnext:
 373         cp = copynext(nextarg, rawname);
 374         if (*cp == '\0')
 375                 nextarg = NULL;
 376         else
 377                 nextarg = cp;
 378         /*
 379          * If it is an absolute pathname, canonicalize it and return it.
 380          */
 381         if (rawname[0] == '/') {
 382                 canon(rawname, name, size);
 383         } else {
 384                 /*
 385                  * For relative pathnames, prepend the current directory to
 386                  * it then canonicalize and return it.
 387                  */
 388                 snprintf(output, sizeof(output), "%s/%s", curdir, rawname);
 389                 canon(output, name, size);
 390         }
 391         if (glob(name, GLOB_ALTDIRFUNC, NULL, &ap->glob) < 0)
 392                 fprintf(stderr, "%s: out of memory\n", ap->cmd);
 393         if (ap->glob.gl_pathc == 0)
 394                 return;
 395         ap->freeglob = 1;
 396         ap->argcnt = ap->glob.gl_pathc;
 397
 398 retnext:
 399         strncpy(name, ap->glob.gl_pathv[ap->glob.gl_pathc - ap->argcnt], size);
 400         name[size - 1] = '\0';
 401         if (--ap->argcnt == 0) {
 402                 ap->freeglob = 0;
 403                 globfree(&ap->glob);
 404         }
 405 #       undef rawname
 406 }
 407
 408 /*
 409  * Strip off the next token of the input.
 410  */
 411 static char *
 412 copynext(char *input, char *output)
 413 {
 414         register char *cp, *bp;
 415         char quote;
 416
 417         for (cp = input; *cp == ' ' || *cp == '\t'; cp++)
 418                 /* skip to argument */;
 419         bp = output;
 420         while (*cp != ' ' && *cp != '\t' && *cp != '\0') {
 421                 /*
 422                  * Handle back slashes.
 423                  */
 424                 if (*cp == '\\') {
 425                         if (*++cp == '\0') {
 426                                 fprintf(stderr,
 427                                         "command lines cannot be continued\n");
 428                                 continue;
 429                         }
 430                         *bp++ = *cp++;
 431                         continue;
 432                 }
 433                 /*
 434                  * The usual unquoted case.
 435                  */
 436                 if (*cp != '\'' && *cp != '"') {
 437                         *bp++ = *cp++;
 438                         continue;
 439                 }
 440                 /*
 441                  * Handle single and double quotes.
 442                  */
 443                 quote = *cp++;
 444                 while (*cp != quote && *cp != '\0')
 445                         *bp++ = *cp++ | 0200;
 446                 if (*cp++ == '\0') {
 447                         fprintf(stderr, "missing %c\n", quote);
 448                         cp--;
 449                         continue;
 450                 }
 451         }
 452         *bp = '\0';
 453         return (cp);
 454 }
 455
 456 /*
 457  * Canonicalize file names to always start with ``./'' and
 458  * remove any embedded "." and ".." components.
 459  */
 460 void
 461 canon(char *rawname, char *canonname, int len)
 462 {
 463         register char *cp, *np;
 464
 465         if (strcmp(rawname, ".") == 0 || strncmp(rawname, "./", 2) == 0)
 466                 (void) strcpy(canonname, "");
 467         else if (rawname[0] == '/')
 468                 (void) strcpy(canonname, ".");
 469         else
 470                 (void) strcpy(canonname, "./");
 471         if (strlen(canonname) + strlen(rawname) >= len)
 472                 errx(1, "canonname: not enough buffer space");
 473
 474         (void) strcat(canonname, rawname);
 475         /*
 476          * Eliminate multiple and trailing '/'s
 477          */
 478         for (cp = np = canonname; *np != '\0'; cp++) {
 479                 *cp = *np++;
 480                 while (*cp == '/' && *np == '/')
 481                         np++;
 482         }
 483         *cp = '\0';
 484         if (*--cp == '/')
 485                 *cp = '\0';
 486         /*
 487          * Eliminate extraneous "." and ".." from pathnames.
 488          */
 489         for (np = canonname; *np != '\0'; ) {
 490                 np++;
 491                 cp = np;
 492                 while (*np != '/' && *np != '\0')
 493                         np++;
 494                 if (np - cp == 1 && *cp == '.') {
 495                         cp--;
 496                         (void) strcpy(cp, np);
 497                         np = cp;
 498                 }
 499                 if (np - cp == 2 && strncmp(cp, "..", 2) == 0) {
 500                         cp--;
 501                         while (cp > &canonname[1] && *--cp != '/')
 502                                 /* find beginning of name */;
 503                         (void) strcpy(cp, np);
 504                         np = cp;
 505                 }
 506         }
 507 }
 508
 509 /*
 510  * Do an "ls" style listing of a directory
 511  */
 512 static void
 513 printlist(char *name, char *basename)
 514 {
 515         register struct afile *fp, *list, *listp = NULL;
 516         register struct direct *dp;
 517         struct afile single;
 518         RST_DIR *dirp;
 519         int entries, len, namelen;
 520         char locname[MAXPATHLEN + 1];
 521
 522         dp = pathsearch(name);
 523         if (dp == NULL || (!dflag && TSTINO(dp->d_ino, dumpmap) == 0) ||
 524             (!vflag && dp->d_ino == WINO))
 525                 return;
 526         if ((dirp = rst_opendir(name)) == NULL) {
 527                 entries = 1;
 528                 list = &single;
 529                 mkentry(name, dp, list);
 530                 len = strlen(basename) + 1;
 531                 if (strlen(name) - len > single.len) {
 532                         freename(single.fname);
 533                         single.fname = savename(&name[len]);
 534                         single.len = strlen(single.fname);
 535                 }
 536         } else {
 537                 entries = 0;
 538                 while ((dp = rst_readdir(dirp)))
 539                         entries++;
 540                 rst_closedir(dirp);
 541                 list = (struct afile *)malloc(entries * sizeof(struct afile));
 542                 if (list == NULL) {
 543                         fprintf(stderr, "ls: out of memory\n");
 544                         return;
 545                 }
 546                 if ((dirp = rst_opendir(name)) == NULL)
 547                         panic("directory reopen failed\n");
 548                 fprintf(stderr, "%s:\n", name);
 549                 entries = 0;
 550                 listp = list;
 551                 namelen = snprintf(locname, sizeof(locname), "%s/", name);
 552                 if (namelen >= sizeof(locname))
 553                         namelen = sizeof(locname) - 1;
 554                 while ((dp = rst_readdir(dirp))) {
 555                         if (dp == NULL)
 556                                 break;
 557                         if (!dflag && TSTINO(dp->d_ino, dumpmap) == 0)
 558                                 continue;
 559                         if (!vflag && (dp->d_ino == WINO ||
 560                              strcmp(dp->d_name, ".") == 0 ||
 561                              strcmp(dp->d_name, "..") == 0))
 562                                 continue;
 563                         locname[namelen] = '\0';
 564                         if (namelen + strlen(dp->d_name) >= MAXPATHLEN) {
 565                                 fprintf(stderr, "%s%s: name exceeds %d char\n",
 566                                         locname, dp->d_name, MAXPATHLEN);
 567                         } else {
 568                                 (void) strncat(locname, dp->d_name,
 569                                     (int)strlen(dp->d_name));
 570                                 mkentry(locname, dp, listp++);
 571                                 entries++;
 572                         }
 573                 }
 574                 rst_closedir(dirp);
 575                 if (entries == 0) {
 576                         fprintf(stderr, "\n");
 577                         free(list);
 578                         return;
 579                 }
 580                 qsort((char *)list, entries, sizeof(struct afile), fcmp);
 581         }
 582         formatf(list, entries);
 583         if (dirp != NULL) {
 584                 for (fp = listp - 1; fp >= list; fp--)
 585                         freename(fp->fname);
 586                 fprintf(stderr, "\n");
 587                 free(list);
 588         }
 589 }
 590
 591 /*
 592  * Read the contents of a directory.
 593  */
 594 static void
 595 mkentry(char *name, struct direct *dp, struct afile *fp)
 596 {
 597         char *cp;
 598         struct entry *np;
 599
 600         fp->fnum = dp->d_ino;
 601         fp->fname = savename(dp->d_name);
 602         for (cp = fp->fname; *cp; cp++)
 603                 if (!vflag && (*cp < ' ' || *cp >= 0177))
 604                         *cp = '?';
 605         fp->len = cp - fp->fname;
 606         if (dflag && TSTINO(fp->fnum, dumpmap) == 0)
 607                 fp->prefix = '^';
 608         else if ((np = lookupname(name)) != NULL && (np->e_flags & NEW))
 609                 fp->prefix = '*';
 610         else
 611                 fp->prefix = ' ';
 612         switch(dp->d_type) {
 613
 614         default:
 615                 fprintf(stderr, "Warning: undefined file type %d\n",
 616                     dp->d_type);
 617                 /* fall through */
 618         case DT_REG:
 619                 fp->postfix = ' ';
 620                 break;
 621
 622         case DT_LNK:
 623                 fp->postfix = '@';
 624                 break;
 625
 626         case DT_FIFO:
 627         case DT_SOCK:
 628                 fp->postfix = '=';
 629                 break;
 630
 631         case DT_CHR:
 632         case DT_BLK:
 633                 fp->postfix = '#';
 634                 break;
 635
 636 #ifndef __linux__
 637         /* no need for this */
 638         case DT_WHT:
 639                 fp->postfix = '%';
 640                 break;
 641 #endif
 642
 643         case DT_UNKNOWN:
 644         case DT_DIR:
 645                 if (inodetype(dp->d_ino) == NODE)
 646                         fp->postfix = '/';
 647                 else
 648                         fp->postfix = ' ';
 649                 break;
 650         }
 651         return;
 652 }
 653
 654 /*
 655  * Print out a pretty listing of a directory
 656  */
 657 static void
 658 formatf(struct afile *list, int nentry)
 659 {
 660         register struct afile *fp, *endlist;
 661         int width, bigino, haveprefix, havepostfix;
 662         int i, j, w, precision = 0, columns, lines;
 663
 664         width = 0;
 665         haveprefix = 0;
 666         havepostfix = 0;
 667         bigino = ROOTINO;
 668         endlist = &list[nentry];
 669         for (fp = &list[0]; fp < endlist; fp++) {
 670                 if (bigino < fp->fnum)
 671                         bigino = fp->fnum;
 672                 if (width < fp->len)
 673                         width = fp->len;
 674                 if (fp->prefix != ' ')
 675                         haveprefix = 1;
 676                 if (fp->postfix != ' ')
 677                         havepostfix = 1;
 678         }
 679         if (haveprefix)
 680                 width++;
 681         if (havepostfix)
 682                 width++;
 683         if (vflag) {
 684                 for (precision = 0, i = bigino; i > 0; i /= 10)
 685                         precision++;
 686                 width += precision + 1;
 687         }
 688         width++;
 689         columns = 81 / width;
 690         if (columns == 0)
 691                 columns = 1;
 692         lines = (nentry + columns - 1) / columns;
 693         for (i = 0; i < lines; i++) {
 694                 for (j = 0; j < columns; j++) {
 695                         fp = &list[j * lines + i];
 696                         if (vflag) {
 697                                 fprintf(stderr, "%*ld ", precision, fp->fnum);
 698                                 fp->len += precision + 1;
 699                         }
 700                         if (haveprefix) {
 701                                 putc(fp->prefix, stderr);
 702                                 fp->len++;
 703                         }
 704                         fprintf(stderr, "%s", fp->fname);
 705                         if (havepostfix) {
 706                                 putc(fp->postfix, stderr);
 707                                 fp->len++;
 708                         }
 709                         if (fp + lines >= endlist) {
 710                                 fprintf(stderr, "\n");
 711                                 break;
 712                         }
 713                         for (w = fp->len; w < width; w++)
 714                                 putc(' ', stderr);
 715                 }
 716         }
 717 }
 718
 719 /*
 720  * Skip over directory entries that are not on the tape
 721  *
 722  * First have to get definition of a dirent.
 723  *
 724  * For Linux the dirent struct is now included from bsdcompat.h
 725  */
 726 #ifndef __linux__
 727 #undef DIRBLKSIZ
 728 #include <dirent.h>
 729 #undef d_ino
 730 #endif  /* ! __linux__ */
 731
 732 struct dirent *
 733 glob_readdir(RST_DIR *dirp)
 734 {
 735         struct direct *dp;
 736         static struct dirent adirent;
 737
 738         while ((dp = rst_readdir(dirp)) != NULL) {
 739                 if (!vflag && dp->d_ino == WINO)
 740                         continue;
 741                 if (dflag || TSTINO(dp->d_ino, dumpmap))
 742                         break;
 743         }
 744         if (dp == NULL)
 745                 return (NULL);
 746         adirent.d_fileno = dp->d_ino;
 747         memmove(adirent.d_name, dp->d_name, dp->d_namlen + 1);
 748         return (&adirent);
 749 }
 750
 751 /*
 752  * Return st_mode information in response to stat or lstat calls
 753  */
 754 static int
 755 glob_stat(const char *name, struct stat *stp)
 756 {
 757         register struct direct *dp;
 758         dp = pathsearch(name);
 759         if (dp == NULL || (!dflag && TSTINO(dp->d_ino, dumpmap) == 0) ||
 760             (!vflag && dp->d_ino == WINO))
 761                 return (-1);
 762         if (inodetype(dp->d_ino) == NODE)
 763                 stp->st_mode = IFDIR;
 764         else
 765                 stp->st_mode = IFREG;
 766         return (0);
 767 }
 768
 769 /*
 770  * Comparison routine for qsort.
 771  */
 772 static int
 773 fcmp(const void *f1, const void *f2)
 774 {
 775         return (strcmp(((struct afile *)f1)->fname,
 776             ((struct afile *)f2)->fname));
 777 }
 778
 779 /*
 780  * respond to interrupts
 781  */
 782 void
 783 onintr(int signo)
 784 {
 785         int save_errno = errno;
 786
 787         if (command == 'i' && runshell)
 788                 longjmp(reset, 1);
 789         if (reply("restore interrupted, continue") == FAIL)
 790                 exit(1);
 791         errno = save_errno;
 792 }