sbin/restore/interactive.c

   1 /*
   2  * Copyright (c) 1985, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. Neither the name of the University nor the names of its contributors
  14  *    may be used to endorse or promote products derived from this software
  15  *    without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  *
  29  * @(#)interactive.c    8.5 (Berkeley) 5/1/95
  30  * $FreeBSD: src/sbin/restore/interactive.c,v 1.8.2.1 2001/01/03 14:36:08 iedowse Exp $
  31  */
  32
  33 #include <sys/param.h>
  34 #include <sys/stat.h>
  35
  36 #include <vfs/ufs/dinode.h>
  37 #include <vfs/ufs/dir.h>
  38 #include <protocols/dumprestore.h>
  39
  40 #include <setjmp.h>
  41 #include <glob.h>
  42 #include <stdio.h>
  43 #include <stdlib.h>
  44 #include <string.h>
  45
  46 #include "restore.h"
  47 #include "extern.h"
  48
  49 /*
  50  * Things to handle interruptions.
  51  */
  52 static int runshell;
  53 static jmp_buf reset;
  54 static char *nextarg = NULL;
  55
  56 /*
  57  * Structure and routines associated with listing directories.
  58  */
  59 struct afile {
  60         ufs1_ino_t fnum;        /* inode number of file */
  61         char    *fname;         /* file name */
  62         short   len;            /* name length */
  63         char    prefix;         /* prefix character */
  64         char    postfix;        /* postfix character */
  65 };
  66 struct arglist {
  67         int     freeglob;       /* glob structure needs to be freed */
  68         int     argcnt;         /* next globbed argument to return */
  69         glob_t  glob;           /* globbing information */
  70         char    *cmd;           /* the current command */
  71 };
  72
  73 static char     *copynext(char *, char *);
  74 static int       fcmp(const void *, const void *);
  75 static void      formatf(struct afile *, int);
  76 static void      getcmd(char *, char *, char *, size_t, struct arglist *);
  77 struct dirent   *glob_readdir(RST_DIR *dirp);
  78 static int       glob_stat(const char *, struct stat *);
  79 static void      mkentry(const char *, struct direct *, struct afile *);
  80 static void      printlist(const char *, char *);
  81
  82 /*
  83  * Read and execute commands from the terminal.
  84  */
  85 void
  86 runcmdshell(void)
  87 {
  88         struct entry *np;
  89         ufs1_ino_t ino;
  90         struct arglist arglist;
  91         char curdir[MAXPATHLEN];
  92         char name[MAXPATHLEN];
  93         char cmd[BUFSIZ];
  94
  95         arglist.freeglob = 0;
  96         arglist.argcnt = 0;
  97         arglist.glob.gl_flags = GLOB_ALTDIRFUNC;
  98         arglist.glob.gl_opendir = (void *)rst_opendir;
  99         arglist.glob.gl_readdir = (void *)glob_readdir;
 100         arglist.glob.gl_closedir = (void *)rst_closedir;
 101         arglist.glob.gl_lstat = glob_stat;
 102         arglist.glob.gl_stat = glob_stat;
 103         canon("/", curdir, sizeof(curdir));
 104 loop:
 105         if (setjmp(reset) != 0) {
 106                 if (arglist.freeglob != 0) {
 107                         arglist.freeglob = 0;
 108                         arglist.argcnt = 0;
 109                         globfree(&arglist.glob);
 110                 }
 111                 nextarg = NULL;
 112                 volno = 0;
 113         }
 114         runshell = 1;
 115         getcmd(curdir, cmd, name, sizeof(name), &arglist);
 116         switch (cmd[0]) {
 117         /*
 118          * Add elements to the extraction list.
 119          */
 120         case 'a':
 121                 if (strncmp(cmd, "add", strlen(cmd)) != 0)
 122                         goto bad;
 123                 ino = dirlookup(name);
 124                 if (ino == 0)
 125                         break;
 126                 if (mflag)
 127                         pathcheck(name);
 128                 treescan(name, ino, addfile);
 129                 break;
 130         /*
 131          * Change working directory.
 132          */
 133         case 'c':
 134                 if (strncmp(cmd, "cd", strlen(cmd)) != 0)
 135                         goto bad;
 136                 ino = dirlookup(name);
 137                 if (ino == 0)
 138                         break;
 139                 if (inodetype(ino) == LEAF) {
 140                         fprintf(stderr, "%s: not a directory\n", name);
 141                         break;
 142                 }
 143                 strcpy(curdir, name);
 144                 break;
 145         /*
 146          * Delete elements from the extraction list.
 147          */
 148         case 'd':
 149                 if (strncmp(cmd, "delete", strlen(cmd)) != 0)
 150                         goto bad;
 151                 np = lookupname(name);
 152                 if (np == NULL || (np->e_flags & NEW) == 0) {
 153                         fprintf(stderr, "%s: not on extraction list\n", name);
 154                         break;
 155                 }
 156                 treescan(name, np->e_ino, deletefile);
 157                 break;
 158         /*
 159          * Extract the requested list.
 160          */
 161         case 'e':
 162                 if (strncmp(cmd, "extract", strlen(cmd)) != 0)
 163                         goto bad;
 164                 createfiles();
 165                 createlinks();
 166                 setdirmodes(0);
 167                 if (dflag)
 168                         checkrestore();
 169                 volno = 0;
 170                 break;
 171         /*
 172          * List available commands.
 173          */
 174         case 'h':
 175                 if (strncmp(cmd, "help", strlen(cmd)) != 0)
 176                         goto bad;
 177                 /* FALLTHROUGH */
 178         case '?':
 179                 fprintf(stderr, "%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s",
 180                         "Available commands are:\n",
 181                         "\tls [arg] - list directory\n",
 182                         "\tcd arg - change directory\n",
 183                         "\tpwd - print current directory\n",
 184                         "\tadd [arg] - add `arg' to list of",
 185                         " files to be extracted\n",
 186                         "\tdelete [arg] - delete `arg' from",
 187                         " list of files to be extracted\n",
 188                         "\textract - extract requested files\n",
 189                         "\tsetmodes - set modes of requested directories\n",
 190                         "\tquit - immediately exit program\n",
 191                         "\twhat - list dump header information\n",
 192                         "\tverbose - toggle verbose flag",
 193                         " (useful with ``ls'')\n",
 194                         "\thelp or `?' - print this list\n",
 195                         "If no `arg' is supplied, the current",
 196                         " directory is used\n");
 197                 break;
 198         /*
 199          * List a directory.
 200          */
 201         case 'l':
 202                 if (strncmp(cmd, "ls", strlen(cmd)) != 0)
 203                         goto bad;
 204                 printlist(name, curdir);
 205                 break;
 206         /*
 207          * Print current directory.
 208          */
 209         case 'p':
 210                 if (strncmp(cmd, "pwd", strlen(cmd)) != 0)
 211                         goto bad;
 212                 if (curdir[1] == '\0')
 213                         fprintf(stderr, "/\n");
 214                 else
 215                         fprintf(stderr, "%s\n", &curdir[1]);
 216                 break;
 217         /*
 218          * Quit.
 219          */
 220         case 'q':
 221                 if (strncmp(cmd, "quit", strlen(cmd)) != 0)
 222                         goto bad;
 223                 return;
 224         case 'x':
 225                 if (strncmp(cmd, "xit", strlen(cmd)) != 0)
 226                         goto bad;
 227                 return;
 228         /*
 229          * Toggle verbose mode.
 230          */
 231         case 'v':
 232                 if (strncmp(cmd, "verbose", strlen(cmd)) != 0)
 233                         goto bad;
 234                 if (vflag) {
 235                         fprintf(stderr, "verbose mode off\n");
 236                         vflag = 0;
 237                         break;
 238                 }
 239                 fprintf(stderr, "verbose mode on\n");
 240                 vflag++;
 241                 break;
 242         /*
 243          * Just restore requested directory modes.
 244          */
 245         case 's':
 246                 if (strncmp(cmd, "setmodes", strlen(cmd)) != 0)
 247                         goto bad;
 248                 setdirmodes(FORCE);
 249                 break;
 250         /*
 251          * Print out dump header information.
 252          */
 253         case 'w':
 254                 if (strncmp(cmd, "what", strlen(cmd)) != 0)
 255                         goto bad;
 256                 printdumpinfo();
 257                 break;
 258         /*
 259          * Turn on debugging.
 260          */
 261         case 'D':
 262                 if (strncmp(cmd, "Debug", strlen(cmd)) != 0)
 263                         goto bad;
 264                 if (dflag) {
 265                         fprintf(stderr, "debugging mode off\n");
 266                         dflag = 0;
 267                         break;
 268                 }
 269                 fprintf(stderr, "debugging mode on\n");
 270                 dflag++;
 271                 break;
 272         /*
 273          * Unknown command.
 274          */
 275         default:
 276         bad:
 277                 fprintf(stderr, "%s: unknown command; type ? for help\n", cmd);
 278                 break;
 279         }
 280         goto loop;
 281 }
 282
 283 /*
 284  * Read and parse an interactive command.
 285  * The first word on the line is assigned to "cmd". If
 286  * there are no arguments on the command line, then "curdir"
 287  * is returned as the argument. If there are arguments
 288  * on the line they are returned one at a time on each
 289  * successive call to getcmd. Each argument is first assigned
 290  * to "name". If it does not start with "/" the pathname in
 291  * "curdir" is prepended to it. Finally "canon" is called to
 292  * eliminate any embedded ".." components.
 293  */
 294 static void
 295 getcmd(char *curdir, char *cmd, char *name, size_t size, struct arglist *ap)
 296 {
 297         char *cp;
 298         static char input[BUFSIZ];
 299         char output[BUFSIZ];
 300 #       define rawname input    /* save space by reusing input buffer */
 301
 302         /*
 303          * Check to see if still processing arguments.
 304          */
 305         if (ap->argcnt > 0)
 306                 goto retnext;
 307         if (nextarg != NULL)
 308                 goto getnext;
 309         /*
 310          * Read a command line and trim off trailing white space.
 311          */
 312         do      {
 313                 fprintf(stderr, "restore > ");
 314                 fflush(stderr);
 315                 if (fgets(input, BUFSIZ, terminal) == NULL) {
 316                         strcpy(cmd, "quit");
 317                         return;
 318                 }
 319         } while (input[0] == '\n');
 320         for (cp = &input[strlen(input) - 2]; *cp == ' ' || *cp == '\t'; cp--)
 321                 /* trim off trailing white space and newline */;
 322         *++cp = '\0';
 323         /*
 324          * Copy the command into "cmd".
 325          */
 326         cp = copynext(input, cmd);
 327         ap->cmd = cmd;
 328         /*
 329          * If no argument, use curdir as the default.
 330          */
 331         if (*cp == '\0') {
 332                 strncpy(name, curdir, size);
 333                 name[size - 1] = '\0';
 334                 return;
 335         }
 336         nextarg = cp;
 337         /*
 338          * Find the next argument.
 339          */
 340 getnext:
 341         cp = copynext(nextarg, rawname);
 342         if (*cp == '\0')
 343                 nextarg = NULL;
 344         else
 345                 nextarg = cp;
 346         /*
 347          * If it is an absolute pathname, canonicalize it and return it.
 348          */
 349         if (rawname[0] == '/') {
 350                 canon(rawname, name, size);
 351         } else {
 352                 /*
 353                  * For relative pathnames, prepend the current directory to
 354                  * it then canonicalize and return it.
 355                  */
 356                 snprintf(output, sizeof(output), "%s/%s", curdir, rawname);
 357                 canon(output, name, size);
 358         }
 359         if (glob(name, GLOB_ALTDIRFUNC, NULL, &ap->glob) < 0)
 360                 fprintf(stderr, "%s: out of memory\n", ap->cmd);
 361         if (ap->glob.gl_pathc == 0)
 362                 return;
 363         ap->freeglob = 1;
 364         ap->argcnt = ap->glob.gl_pathc;
 365
 366 retnext:
 367         strncpy(name, ap->glob.gl_pathv[ap->glob.gl_pathc - ap->argcnt], size);
 368         name[size - 1] = '\0';
 369         if (--ap->argcnt == 0) {
 370                 ap->freeglob = 0;
 371                 globfree(&ap->glob);
 372         }
 373 #       undef rawname
 374 }
 375
 376 /*
 377  * Strip off the next token of the input.
 378  */
 379 static char *
 380 copynext(char *input, char *output)
 381 {
 382         char *cp, *bp;
 383         char quote;
 384
 385         for (cp = input; *cp == ' ' || *cp == '\t'; cp++)
 386                 /* skip to argument */;
 387         bp = output;
 388         while (*cp != ' ' && *cp != '\t' && *cp != '\0') {
 389                 /*
 390                  * Handle back slashes.
 391                  */
 392                 if (*cp == '\\') {
 393                         if (*++cp == '\0') {
 394                                 fprintf(stderr,
 395                                         "command lines cannot be continued\n");
 396                                 continue;
 397                         }
 398                         *bp++ = *cp++;
 399                         continue;
 400                 }
 401                 /*
 402                  * The usual unquoted case.
 403                  */
 404                 if (*cp != '\'' && *cp != '"') {
 405                         *bp++ = *cp++;
 406                         continue;
 407                 }
 408                 /*
 409                  * Handle single and double quotes.
 410                  */
 411                 quote = *cp++;
 412                 while (*cp != quote && *cp != '\0')
 413                         *bp++ = *cp++ | 0200;
 414                 if (*cp++ == '\0') {
 415                         fprintf(stderr, "missing %c\n", quote);
 416                         cp--;
 417                         continue;
 418                 }
 419         }
 420         *bp = '\0';
 421         return (cp);
 422 }
 423
 424 /*
 425  * Canonicalize file names to always start with ``./'' and
 426  * remove any embedded "." and ".." components.
 427  */
 428 void
 429 canon(const char *rawname, char *canonname, size_t len)
 430 {
 431         char *cp, *np;
 432
 433         if (strcmp(rawname, ".") == 0 || strncmp(rawname, "./", 2) == 0)
 434                 strcpy(canonname, "");
 435         else if (rawname[0] == '/')
 436                 strcpy(canonname, ".");
 437         else
 438                 strcpy(canonname, "./");
 439         if (strlen(canonname) + strlen(rawname) >= len) {
 440                 fprintf(stderr, "canonname: not enough buffer space\n");
 441                 done(1);
 442         }
 443
 444         strcat(canonname, rawname);
 445         /*
 446          * Eliminate multiple and trailing '/'s
 447          */
 448         for (cp = np = canonname; *np != '\0'; cp++) {
 449                 *cp = *np++;
 450                 while (*cp == '/' && *np == '/')
 451                         np++;
 452         }
 453         *cp = '\0';
 454         if (*--cp == '/')
 455                 *cp = '\0';
 456         /*
 457          * Eliminate extraneous "." and ".." from pathnames.
 458          */
 459         for (np = canonname; *np != '\0'; ) {
 460                 np++;
 461                 cp = np;
 462                 while (*np != '/' && *np != '\0')
 463                         np++;
 464                 if (np - cp == 1 && *cp == '.') {
 465                         cp--;
 466                         strcpy(cp, np);
 467                         np = cp;
 468                 }
 469                 if (np - cp == 2 && strncmp(cp, "..", 2) == 0) {
 470                         cp--;
 471                         while (cp > &canonname[1] && *--cp != '/')
 472                                 /* find beginning of name */;
 473                         strcpy(cp, np);
 474                         np = cp;
 475                 }
 476         }
 477 }
 478
 479 /*
 480  * Do an "ls" style listing of a directory
 481  */
 482 static void
 483 printlist(const char *name, char *basename)
 484 {
 485         struct afile *fp, *list, *listp = NULL;
 486         struct direct *dp;
 487         struct afile single;
 488         RST_DIR *dirp;
 489         int entries, len, namelen;
 490         char locname[MAXPATHLEN + 1];
 491
 492         dp = pathsearch(name);
 493         if (dp == NULL || (!dflag && TSTINO(dp->d_ino, dumpmap) == 0) ||
 494             (!vflag && dp->d_ino == UFS_WINO))
 495                 return;
 496         if ((dirp = rst_opendir(name)) == NULL) {
 497                 entries = 1;
 498                 list = &single;
 499                 mkentry(name, dp, list);
 500                 len = strlen(basename) + 1;
 501                 if (strlen(name) - len > (unsigned short)single.len) {
 502                         freename(single.fname);
 503                         single.fname = savename(&name[len]);
 504                         single.len = strlen(single.fname);
 505                 }
 506         } else {
 507                 entries = 0;
 508                 while ((dp = rst_readdir(dirp)))
 509                         entries++;
 510                 rst_closedir(dirp);
 511                 list = (struct afile *)malloc(entries * sizeof(struct afile));
 512                 if (list == NULL) {
 513                         fprintf(stderr, "ls: out of memory\n");
 514                         return;
 515                 }
 516                 if ((dirp = rst_opendir(name)) == NULL)
 517                         panic("directory reopen failed\n");
 518                 fprintf(stderr, "%s:\n", name);
 519                 entries = 0;
 520                 listp = list;
 521                 strncpy(locname, name, MAXPATHLEN);
 522                 strncat(locname, "/", MAXPATHLEN);
 523                 namelen = strlen(locname);
 524                 while ((dp = rst_readdir(dirp))) {
 525                         if (dp == NULL)
 526                                 break;
 527                         if (!dflag && TSTINO(dp->d_ino, dumpmap) == 0)
 528                                 continue;
 529                         if (!vflag && (dp->d_ino == UFS_WINO ||
 530                              strcmp(dp->d_name, ".") == 0 ||
 531                              strcmp(dp->d_name, "..") == 0))
 532                                 continue;
 533                         locname[namelen] = '\0';
 534                         if (namelen + dp->d_namlen >= MAXPATHLEN) {
 535                                 fprintf(stderr, "%s%s: name exceeds %d char\n",
 536                                         locname, dp->d_name, MAXPATHLEN);
 537                         } else {
 538                                 strncat(locname, dp->d_name, (int)dp->d_namlen);
 539                                 mkentry(locname, dp, listp++);
 540                                 entries++;
 541                         }
 542                 }
 543                 rst_closedir(dirp);
 544                 if (entries == 0) {
 545                         fprintf(stderr, "\n");
 546                         free(list);
 547                         return;
 548                 }
 549                 qsort((char *)list, entries, sizeof(struct afile), fcmp);
 550         }
 551         formatf(list, entries);
 552         if (dirp != NULL) {
 553                 for (fp = listp - 1; fp >= list; fp--)
 554                         freename(fp->fname);
 555                 fprintf(stderr, "\n");
 556                 free(list);
 557         }
 558 }
 559
 560 /*
 561  * Read the contents of a directory.
 562  */
 563 static void
 564 mkentry(const char *name, struct direct *dp, struct afile *fp)
 565 {
 566         char *cp;
 567         struct entry *np;
 568
 569         fp->fnum = dp->d_ino;
 570         fp->fname = savename(dp->d_name);
 571         for (cp = fp->fname; *cp; cp++)
 572                 if (!vflag && (*cp < ' ' || *cp >= 0177))
 573                         *cp = '?';
 574         fp->len = cp - fp->fname;
 575         if (dflag && TSTINO(fp->fnum, dumpmap) == 0)
 576                 fp->prefix = '^';
 577         else if ((np = lookupname(name)) != NULL && (np->e_flags & NEW))
 578                 fp->prefix = '*';
 579         else
 580                 fp->prefix = ' ';
 581         switch(dp->d_type) {
 582
 583         default:
 584                 fprintf(stderr, "Warning: undefined file type %d\n",
 585                     dp->d_type);
 586                 /* fall through */
 587         case DT_REG:
 588                 fp->postfix = ' ';
 589                 break;
 590
 591         case DT_LNK:
 592                 fp->postfix = '@';
 593                 break;
 594
 595         case DT_FIFO:
 596         case DT_SOCK:
 597                 fp->postfix = '=';
 598                 break;
 599
 600         case DT_CHR:
 601         case DT_BLK:
 602                 fp->postfix = '#';
 603                 break;
 604
 605         case DT_WHT:
 606                 fp->postfix = '%';
 607                 break;
 608
 609         case DT_UNKNOWN:
 610         case DT_DIR:
 611                 if (inodetype(dp->d_ino) == NODE)
 612                         fp->postfix = '/';
 613                 else
 614                         fp->postfix = ' ';
 615                 break;
 616         }
 617         return;
 618 }
 619
 620 /*
 621  * Print out a pretty listing of a directory
 622  */
 623 static void
 624 formatf(struct afile *list, int nentry)
 625 {
 626         struct afile *fp, *endlist;
 627         unsigned int bigino;
 628         int width, haveprefix, havepostfix;
 629         int i, j, w, precision = 0, columns, lines;
 630
 631         width = 0;
 632         haveprefix = 0;
 633         havepostfix = 0;
 634         bigino = UFS_ROOTINO;
 635         endlist = &list[nentry];
 636         for (fp = &list[0]; fp < endlist; fp++) {
 637                 if (bigino < fp->fnum)
 638                         bigino = fp->fnum;
 639                 if (width < fp->len)
 640                         width = fp->len;
 641                 if (fp->prefix != ' ')
 642                         haveprefix = 1;
 643                 if (fp->postfix != ' ')
 644                         havepostfix = 1;
 645         }
 646         if (haveprefix)
 647                 width++;
 648         if (havepostfix)
 649                 width++;
 650         if (vflag) {
 651                 for (precision = 0, i = bigino; i > 0; i /= 10)
 652                         precision++;
 653                 width += precision + 1;
 654         }
 655         width++;
 656         columns = 81 / width;
 657         if (columns == 0)
 658                 columns = 1;
 659         lines = (nentry + columns - 1) / columns;
 660         for (i = 0; i < lines; i++) {
 661                 for (j = 0; j < columns; j++) {
 662                         fp = &list[j * lines + i];
 663                         if (vflag) {
 664                                 fprintf(stderr, "%*d ", precision, fp->fnum);
 665                                 fp->len += precision + 1;
 666                         }
 667                         if (haveprefix) {
 668                                 putc(fp->prefix, stderr);
 669                                 fp->len++;
 670                         }
 671                         fprintf(stderr, "%s", fp->fname);
 672                         if (havepostfix) {
 673                                 putc(fp->postfix, stderr);
 674                                 fp->len++;
 675                         }
 676                         if (fp + lines >= endlist) {
 677                                 fprintf(stderr, "\n");
 678                                 break;
 679                         }
 680                         for (w = fp->len; w < width; w++)
 681                                 putc(' ', stderr);
 682                 }
 683         }
 684 }
 685
 686 /*
 687  * Skip over directory entries that are not on the tape
 688  *
 689  * First have to get definition of a dirent.
 690  */
 691 #undef DIRBLKSIZ
 692 #include <dirent.h>
 693 #undef d_ino
 694
 695 struct dirent *
 696 glob_readdir(RST_DIR *dirp)
 697 {
 698         enum {
 699                 ADIRENT_STORAGE_LEN = _DIRENT_RECLEN(NAME_MAX),
 700         };
 701         static union {
 702                 uint8_t storage[ADIRENT_STORAGE_LEN];
 703                 struct dirent alignment;
 704         } adirent;
 705         struct direct *dp;
 706         struct dirent *adp;
 707
 708         while ((dp = rst_readdir(dirp)) != NULL) {
 709                 if (!vflag && dp->d_ino == UFS_WINO)
 710                         continue;
 711                 if (dflag || TSTINO(dp->d_ino, dumpmap))
 712                         break;
 713         }
 714         if (dp == NULL)
 715                 return (NULL);
 716         adp = (struct dirent *)&adirent;
 717         adp->d_fileno = dp->d_ino;
 718         adp->d_namlen = dp->d_namlen;
 719         strcpy(adp->d_name, dp->d_name);
 720         return (adp);
 721 }
 722
 723 /*
 724  * Return st_mode information in response to stat or lstat calls
 725  */
 726 static int
 727 glob_stat(const char *name, struct stat *stp)
 728 {
 729         struct direct *dp;
 730
 731         dp = pathsearch(name);
 732         if (dp == NULL || (!dflag && TSTINO(dp->d_ino, dumpmap) == 0) ||
 733             (!vflag && dp->d_ino == UFS_WINO))
 734                 return (-1);
 735         if (inodetype(dp->d_ino) == NODE)
 736                 stp->st_mode = IFDIR;
 737         else
 738                 stp->st_mode = IFREG;
 739         return (0);
 740 }
 741
 742 /*
 743  * Comparison routine for qsort.
 744  */
 745 static int
 746 fcmp(const void *f1, const void *f2)
 747 {
 748         return (strcmp(((const struct afile *)f1)->fname,
 749             ((const struct afile *)f2)->fname));
 750 }
 751
 752 /*
 753  * respond to interrupts
 754  */
 755 void
 756 onintr(int signo __unused)
 757 {
 758         if (command == 'i' && runshell)
 759                 longjmp(reset, 1);
 760         if (reply("restore interrupted, continue") == FAIL)
 761                 done(1);
 762 }