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. All advertising materials mentioning features or use of this software
  14  *    must display the following acknowledgement:
  15  *      This product includes software developed by the University of
  16  *      California, Berkeley and its contributors.
  17  * 4. 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  * @(#)interactive.c    8.5 (Berkeley) 5/1/95
  34  * $FreeBSD: src/sbin/restore/interactive.c,v 1.8.2.1 2001/01/03 14:36:08 iedowse Exp $
  35  * $DragonFly: src/sbin/restore/interactive.c,v 1.10 2005/11/06 12:49:25 swildner Exp $
  36  */
  37
  38 #include <sys/param.h>
  39 #include <sys/stat.h>
  40
  41 #include <dirent.h>
  42 #include <setjmp.h>
  43 #include <glob.h>
  44 #include <stdio.h>
  45 #include <stdlib.h>
  46 #include <string.h>
  47
  48 #include <vfs/ufs/dinode.h>
  49 #include <vfs/ufs/dir.h>
  50 #include <protocols/dumprestore.h>
  51
  52 #include "restore.h"
  53 #include "extern.h"
  54
  55 #define round(a, b) (((a) + (b) - 1) / (b) * (b))
  56
  57 /*
  58  * Things to handle interruptions.
  59  */
  60 static int runshell;
  61 static jmp_buf reset;
  62 static char *nextarg = NULL;
  63
  64 /*
  65  * Structure and routines associated with listing directories.
  66  */
  67 struct afile {
  68         ufs1_ino_t fnum;        /* inode number of file */
  69         char    *fname;         /* file name */
  70         short   len;            /* name length */
  71         char    prefix;         /* prefix character */
  72         char    postfix;        /* postfix character */
  73 };
  74 struct arglist {
  75         int     freeglob;       /* glob structure needs to be freed */
  76         int     argcnt;         /* next globbed argument to return */
  77         glob_t  glob;           /* globbing information */
  78         char    *cmd;           /* the current command */
  79 };
  80
  81 static char     *copynext(char *, char *);
  82 static int       fcmp(const void *, const void *);
  83 static void      formatf(struct afile *, int);
  84 static void      getcmd(char *, char *, char *, int, struct arglist *);
  85 struct dirent   *glob_readdir(RST_DIR *dirp);
  86 static int       glob_stat(const char *, struct stat *);
  87 static void      mkentry(char *, struct direct *, struct afile *);
  88 static void      printlist(char *, char *);
  89
  90 /*
  91  * Read and execute commands from the terminal.
  92  */
  93 void
  94 runcmdshell(void)
  95 {
  96         struct entry *np;
  97         ufs1_ino_t ino;
  98         struct arglist arglist;
  99         char curdir[MAXPATHLEN];
 100         char name[MAXPATHLEN];
 101         char cmd[BUFSIZ];
 102
 103         arglist.freeglob = 0;
 104         arglist.argcnt = 0;
 105         arglist.glob.gl_flags = GLOB_ALTDIRFUNC;
 106         arglist.glob.gl_opendir = (void *)rst_opendir;
 107         arglist.glob.gl_readdir = (void *)glob_readdir;
 108         arglist.glob.gl_closedir = (void *)rst_closedir;
 109         arglist.glob.gl_lstat = glob_stat;
 110         arglist.glob.gl_stat = glob_stat;
 111         canon("/", curdir, sizeof(curdir));
 112 loop:
 113         if (setjmp(reset) != 0) {
 114                 if (arglist.freeglob != 0) {
 115                         arglist.freeglob = 0;
 116                         arglist.argcnt = 0;
 117                         globfree(&arglist.glob);
 118                 }
 119                 nextarg = NULL;
 120                 volno = 0;
 121         }
 122         runshell = 1;
 123         getcmd(curdir, cmd, name, sizeof(name), &arglist);
 124         switch (cmd[0]) {
 125         /*
 126          * Add elements to the extraction list.
 127          */
 128         case 'a':
 129                 if (strncmp(cmd, "add", strlen(cmd)) != 0)
 130                         goto bad;
 131                 ino = dirlookup(name);
 132                 if (ino == 0)
 133                         break;
 134                 if (mflag)
 135                         pathcheck(name);
 136                 treescan(name, ino, addfile);
 137                 break;
 138         /*
 139          * Change working directory.
 140          */
 141         case 'c':
 142                 if (strncmp(cmd, "cd", strlen(cmd)) != 0)
 143                         goto bad;
 144                 ino = dirlookup(name);
 145                 if (ino == 0)
 146                         break;
 147                 if (inodetype(ino) == LEAF) {
 148                         fprintf(stderr, "%s: not a directory\n", name);
 149                         break;
 150                 }
 151                 strcpy(curdir, name);
 152                 break;
 153         /*
 154          * Delete elements from the extraction list.
 155          */
 156         case 'd':
 157                 if (strncmp(cmd, "delete", strlen(cmd)) != 0)
 158                         goto bad;
 159                 np = lookupname(name);
 160                 if (np == NULL || (np->e_flags & NEW) == 0) {
 161                         fprintf(stderr, "%s: not on extraction list\n", name);
 162                         break;
 163                 }
 164                 treescan(name, np->e_ino, deletefile);
 165                 break;
 166         /*
 167          * Extract the requested list.
 168          */
 169         case 'e':
 170                 if (strncmp(cmd, "extract", strlen(cmd)) != 0)
 171                         goto bad;
 172                 createfiles();
 173                 createlinks();
 174                 setdirmodes(0);
 175                 if (dflag)
 176                         checkrestore();
 177                 volno = 0;
 178                 break;
 179         /*
 180          * List available commands.
 181          */
 182         case 'h':
 183                 if (strncmp(cmd, "help", strlen(cmd)) != 0)
 184                         goto bad;
 185         case '?':
 186                 fprintf(stderr, "%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s",
 187                         "Available commands are:\n",
 188                         "\tls [arg] - list directory\n",
 189                         "\tcd arg - change directory\n",
 190                         "\tpwd - print current directory\n",
 191                         "\tadd [arg] - add `arg' to list of",
 192                         " files to be extracted\n",
 193                         "\tdelete [arg] - delete `arg' from",
 194                         " list of files to be extracted\n",
 195                         "\textract - extract requested files\n",
 196                         "\tsetmodes - set modes of requested directories\n",
 197                         "\tquit - immediately exit program\n",
 198                         "\twhat - list dump header information\n",
 199                         "\tverbose - toggle verbose flag",
 200                         " (useful with ``ls'')\n",
 201                         "\thelp or `?' - print this list\n",
 202                         "If no `arg' is supplied, the current",
 203                         " directory is used\n");
 204                 break;
 205         /*
 206          * List a directory.
 207          */
 208         case 'l':
 209                 if (strncmp(cmd, "ls", strlen(cmd)) != 0)
 210                         goto bad;
 211                 printlist(name, curdir);
 212                 break;
 213         /*
 214          * Print current directory.
 215          */
 216         case 'p':
 217                 if (strncmp(cmd, "pwd", strlen(cmd)) != 0)
 218                         goto bad;
 219                 if (curdir[1] == '\0')
 220                         fprintf(stderr, "/\n");
 221                 else
 222                         fprintf(stderr, "%s\n", &curdir[1]);
 223                 break;
 224         /*
 225          * Quit.
 226          */
 227         case 'q':
 228                 if (strncmp(cmd, "quit", strlen(cmd)) != 0)
 229                         goto bad;
 230                 return;
 231         case 'x':
 232                 if (strncmp(cmd, "xit", strlen(cmd)) != 0)
 233                         goto bad;
 234                 return;
 235         /*
 236          * Toggle verbose mode.
 237          */
 238         case 'v':
 239                 if (strncmp(cmd, "verbose", strlen(cmd)) != 0)
 240                         goto bad;
 241                 if (vflag) {
 242                         fprintf(stderr, "verbose mode off\n");
 243                         vflag = 0;
 244                         break;
 245                 }
 246                 fprintf(stderr, "verbose mode on\n");
 247                 vflag++;
 248                 break;
 249         /*
 250          * Just restore requested directory modes.
 251          */
 252         case 's':
 253                 if (strncmp(cmd, "setmodes", strlen(cmd)) != 0)
 254                         goto bad;
 255                 setdirmodes(FORCE);
 256                 break;
 257         /*
 258          * Print out dump header information.
 259          */
 260         case 'w':
 261                 if (strncmp(cmd, "what", strlen(cmd)) != 0)
 262                         goto bad;
 263                 printdumpinfo();
 264                 break;
 265         /*
 266          * Turn on debugging.
 267          */
 268         case 'D':
 269                 if (strncmp(cmd, "Debug", strlen(cmd)) != 0)
 270                         goto bad;
 271                 if (dflag) {
 272                         fprintf(stderr, "debugging mode off\n");
 273                         dflag = 0;
 274                         break;
 275                 }
 276                 fprintf(stderr, "debugging mode on\n");
 277                 dflag++;
 278                 break;
 279         /*
 280          * Unknown command.
 281          */
 282         default:
 283         bad:
 284                 fprintf(stderr, "%s: unknown command; type ? for help\n", cmd);
 285                 break;
 286         }
 287         goto loop;
 288 }
 289
 290 /*
 291  * Read and parse an interactive command.
 292  * The first word on the line is assigned to "cmd". If
 293  * there are no arguments on the command line, then "curdir"
 294  * is returned as the argument. If there are arguments
 295  * on the line they are returned one at a time on each
 296  * successive call to getcmd. Each argument is first assigned
 297  * to "name". If it does not start with "/" the pathname in
 298  * "curdir" is prepended to it. Finally "canon" is called to
 299  * eliminate any embedded ".." components.
 300  */
 301 static void
 302 getcmd(char *curdir, char *cmd, char *name, int size, struct arglist *ap)
 303 {
 304         char *cp;
 305         static char input[BUFSIZ];
 306         char output[BUFSIZ];
 307 #       define rawname input    /* save space by reusing input buffer */
 308
 309         /*
 310          * Check to see if still processing arguments.
 311          */
 312         if (ap->argcnt > 0)
 313                 goto retnext;
 314         if (nextarg != NULL)
 315                 goto getnext;
 316         /*
 317          * Read a command line and trim off trailing white space.
 318          */
 319         do      {
 320                 fprintf(stderr, "restore > ");
 321                 fflush(stderr);
 322                 if (fgets(input, BUFSIZ, terminal) == NULL) {
 323                         strcpy(cmd, "quit");
 324                         return;
 325                 }
 326         } while (input[0] == '\n');
 327         for (cp = &input[strlen(input) - 2]; *cp == ' ' || *cp == '\t'; cp--)
 328                 /* trim off trailing white space and newline */;
 329         *++cp = '\0';
 330         /*
 331          * Copy the command into "cmd".
 332          */
 333         cp = copynext(input, cmd);
 334         ap->cmd = cmd;
 335         /*
 336          * If no argument, use curdir as the default.
 337          */
 338         if (*cp == '\0') {
 339                 strncpy(name, curdir, size);
 340                 name[size - 1] = '\0';
 341                 return;
 342         }
 343         nextarg = cp;
 344         /*
 345          * Find the next argument.
 346          */
 347 getnext:
 348         cp = copynext(nextarg, rawname);
 349         if (*cp == '\0')
 350                 nextarg = NULL;
 351         else
 352                 nextarg = cp;
 353         /*
 354          * If it is an absolute pathname, canonicalize it and return it.
 355          */
 356         if (rawname[0] == '/') {
 357                 canon(rawname, name, size);
 358         } else {
 359                 /*
 360                  * For relative pathnames, prepend the current directory to
 361                  * it then canonicalize and return it.
 362                  */
 363                 snprintf(output, sizeof(output), "%s/%s", curdir, rawname);
 364                 canon(output, name, size);
 365         }
 366         if (glob(name, GLOB_ALTDIRFUNC, NULL, &ap->glob) < 0)
 367                 fprintf(stderr, "%s: out of memory\n", ap->cmd);
 368         if (ap->glob.gl_pathc == 0)
 369                 return;
 370         ap->freeglob = 1;
 371         ap->argcnt = ap->glob.gl_pathc;
 372
 373 retnext:
 374         strncpy(name, ap->glob.gl_pathv[ap->glob.gl_pathc - ap->argcnt], size);
 375         name[size - 1] = '\0';
 376         if (--ap->argcnt == 0) {
 377                 ap->freeglob = 0;
 378                 globfree(&ap->glob);
 379         }
 380 #       undef rawname
 381 }
 382
 383 /*
 384  * Strip off the next token of the input.
 385  */
 386 static char *
 387 copynext(char *input, char *output)
 388 {
 389         char *cp, *bp;
 390         char quote;
 391
 392         for (cp = input; *cp == ' ' || *cp == '\t'; cp++)
 393                 /* skip to argument */;
 394         bp = output;
 395         while (*cp != ' ' && *cp != '\t' && *cp != '\0') {
 396                 /*
 397                  * Handle back slashes.
 398                  */
 399                 if (*cp == '\\') {
 400                         if (*++cp == '\0') {
 401                                 fprintf(stderr,
 402                                         "command lines cannot be continued\n");
 403                                 continue;
 404                         }
 405                         *bp++ = *cp++;
 406                         continue;
 407                 }
 408                 /*
 409                  * The usual unquoted case.
 410                  */
 411                 if (*cp != '\'' && *cp != '"') {
 412                         *bp++ = *cp++;
 413                         continue;
 414                 }
 415                 /*
 416                  * Handle single and double quotes.
 417                  */
 418                 quote = *cp++;
 419                 while (*cp != quote && *cp != '\0')
 420                         *bp++ = *cp++ | 0200;
 421                 if (*cp++ == '\0') {
 422                         fprintf(stderr, "missing %c\n", quote);
 423                         cp--;
 424                         continue;
 425                 }
 426         }
 427         *bp = '\0';
 428         return (cp);
 429 }
 430
 431 /*
 432  * Canonicalize file names to always start with ``./'' and
 433  * remove any embedded "." and ".." components.
 434  */
 435 void
 436 canon(char *rawname, char *canonname, int len)
 437 {
 438         char *cp, *np;
 439
 440         if (strcmp(rawname, ".") == 0 || strncmp(rawname, "./", 2) == 0)
 441                 strcpy(canonname, "");
 442         else if (rawname[0] == '/')
 443                 strcpy(canonname, ".");
 444         else
 445                 strcpy(canonname, "./");
 446         if (strlen(canonname) + strlen(rawname) >= len) {
 447                 fprintf(stderr, "canonname: not enough buffer space\n");
 448                 done(1);
 449         }
 450
 451         strcat(canonname, rawname);
 452         /*
 453          * Eliminate multiple and trailing '/'s
 454          */
 455         for (cp = np = canonname; *np != '\0'; cp++) {
 456                 *cp = *np++;
 457                 while (*cp == '/' && *np == '/')
 458                         np++;
 459         }
 460         *cp = '\0';
 461         if (*--cp == '/')
 462                 *cp = '\0';
 463         /*
 464          * Eliminate extraneous "." and ".." from pathnames.
 465          */
 466         for (np = canonname; *np != '\0'; ) {
 467                 np++;
 468                 cp = np;
 469                 while (*np != '/' && *np != '\0')
 470                         np++;
 471                 if (np - cp == 1 && *cp == '.') {
 472                         cp--;
 473                         strcpy(cp, np);
 474                         np = cp;
 475                 }
 476                 if (np - cp == 2 && strncmp(cp, "..", 2) == 0) {
 477                         cp--;
 478                         while (cp > &canonname[1] && *--cp != '/')
 479                                 /* find beginning of name */;
 480                         strcpy(cp, np);
 481                         np = cp;
 482                 }
 483         }
 484 }
 485
 486 /*
 487  * Do an "ls" style listing of a directory
 488  */
 489 static void
 490 printlist(char *name, char *basename)
 491 {
 492         struct afile *fp, *list, *listp = NULL;
 493         struct direct *dp;
 494         struct afile single;
 495         RST_DIR *dirp;
 496         int entries, len, namelen;
 497         char locname[MAXPATHLEN + 1];
 498
 499         dp = pathsearch(name);
 500         if (dp == NULL || (!dflag && TSTINO(dp->d_ino, dumpmap) == 0) ||
 501             (!vflag && dp->d_ino == WINO))
 502                 return;
 503         if ((dirp = rst_opendir(name)) == NULL) {
 504                 entries = 1;
 505                 list = &single;
 506                 mkentry(name, dp, list);
 507                 len = strlen(basename) + 1;
 508                 if (strlen(name) - len > single.len) {
 509                         freename(single.fname);
 510                         single.fname = savename(&name[len]);
 511                         single.len = strlen(single.fname);
 512                 }
 513         } else {
 514                 entries = 0;
 515                 while ((dp = rst_readdir(dirp)))
 516                         entries++;
 517                 rst_closedir(dirp);
 518                 list = (struct afile *)malloc(entries * sizeof(struct afile));
 519                 if (list == NULL) {
 520                         fprintf(stderr, "ls: out of memory\n");
 521                         return;
 522                 }
 523                 if ((dirp = rst_opendir(name)) == NULL)
 524                         panic("directory reopen failed\n");
 525                 fprintf(stderr, "%s:\n", name);
 526                 entries = 0;
 527                 listp = list;
 528                 strncpy(locname, name, MAXPATHLEN);
 529                 strncat(locname, "/", MAXPATHLEN);
 530                 namelen = strlen(locname);
 531                 while ((dp = rst_readdir(dirp))) {
 532                         if (dp == NULL)
 533                                 break;
 534                         if (!dflag && TSTINO(dp->d_ino, dumpmap) == 0)
 535                                 continue;
 536                         if (!vflag && (dp->d_ino == WINO ||
 537                              strcmp(dp->d_name, ".") == 0 ||
 538                              strcmp(dp->d_name, "..") == 0))
 539                                 continue;
 540                         locname[namelen] = '\0';
 541                         if (namelen + dp->d_namlen >= MAXPATHLEN) {
 542                                 fprintf(stderr, "%s%s: name exceeds %d char\n",
 543                                         locname, dp->d_name, MAXPATHLEN);
 544                         } else {
 545                                 strncat(locname, dp->d_name, (int)dp->d_namlen);
 546                                 mkentry(locname, dp, listp++);
 547                                 entries++;
 548                         }
 549                 }
 550                 rst_closedir(dirp);
 551                 if (entries == 0) {
 552                         fprintf(stderr, "\n");
 553                         free(list);
 554                         return;
 555                 }
 556                 qsort((char *)list, entries, sizeof(struct afile), fcmp);
 557         }
 558         formatf(list, entries);
 559         if (dirp != NULL) {
 560                 for (fp = listp - 1; fp >= list; fp--)
 561                         freename(fp->fname);
 562                 fprintf(stderr, "\n");
 563                 free(list);
 564         }
 565 }
 566
 567 /*
 568  * Read the contents of a directory.
 569  */
 570 static void
 571 mkentry(char *name, struct direct *dp, struct afile *fp)
 572 {
 573         char *cp;
 574         struct entry *np;
 575
 576         fp->fnum = dp->d_ino;
 577         fp->fname = savename(dp->d_name);
 578         for (cp = fp->fname; *cp; cp++)
 579                 if (!vflag && (*cp < ' ' || *cp >= 0177))
 580                         *cp = '?';
 581         fp->len = cp - fp->fname;
 582         if (dflag && TSTINO(fp->fnum, dumpmap) == 0)
 583                 fp->prefix = '^';
 584         else if ((np = lookupname(name)) != NULL && (np->e_flags & NEW))
 585                 fp->prefix = '*';
 586         else
 587                 fp->prefix = ' ';
 588         switch(dp->d_type) {
 589
 590         default:
 591                 fprintf(stderr, "Warning: undefined file type %d\n",
 592                     dp->d_type);
 593                 /* fall through */
 594         case DT_REG:
 595                 fp->postfix = ' ';
 596                 break;
 597
 598         case DT_LNK:
 599                 fp->postfix = '@';
 600                 break;
 601
 602         case DT_FIFO:
 603         case DT_SOCK:
 604                 fp->postfix = '=';
 605                 break;
 606
 607         case DT_CHR:
 608         case DT_BLK:
 609                 fp->postfix = '#';
 610                 break;
 611
 612         case DT_WHT:
 613                 fp->postfix = '%';
 614                 break;
 615
 616         case DT_UNKNOWN:
 617         case DT_DIR:
 618                 if (inodetype(dp->d_ino) == NODE)
 619                         fp->postfix = '/';
 620                 else
 621                         fp->postfix = ' ';
 622                 break;
 623         }
 624         return;
 625 }
 626
 627 /*
 628  * Print out a pretty listing of a directory
 629  */
 630 static void
 631 formatf(struct afile *list, int nentry)
 632 {
 633         struct afile *fp, *endlist;
 634         int width, bigino, haveprefix, havepostfix;
 635         int i, j, w, precision = 0, columns, lines;
 636
 637         width = 0;
 638         haveprefix = 0;
 639         havepostfix = 0;
 640         bigino = ROOTINO;
 641         endlist = &list[nentry];
 642         for (fp = &list[0]; fp < endlist; fp++) {
 643                 if (bigino < fp->fnum)
 644                         bigino = fp->fnum;
 645                 if (width < fp->len)
 646                         width = fp->len;
 647                 if (fp->prefix != ' ')
 648                         haveprefix = 1;
 649                 if (fp->postfix != ' ')
 650                         havepostfix = 1;
 651         }
 652         if (haveprefix)
 653                 width++;
 654         if (havepostfix)
 655                 width++;
 656         if (vflag) {
 657                 for (precision = 0, i = bigino; i > 0; i /= 10)
 658                         precision++;
 659                 width += precision + 1;
 660         }
 661         width++;
 662         columns = 81 / width;
 663         if (columns == 0)
 664                 columns = 1;
 665         lines = (nentry + columns - 1) / columns;
 666         for (i = 0; i < lines; i++) {
 667                 for (j = 0; j < columns; j++) {
 668                         fp = &list[j * lines + i];
 669                         if (vflag) {
 670                                 fprintf(stderr, "%*d ", precision, fp->fnum);
 671                                 fp->len += precision + 1;
 672                         }
 673                         if (haveprefix) {
 674                                 putc(fp->prefix, stderr);
 675                                 fp->len++;
 676                         }
 677                         fprintf(stderr, "%s", fp->fname);
 678                         if (havepostfix) {
 679                                 putc(fp->postfix, stderr);
 680                                 fp->len++;
 681                         }
 682                         if (fp + lines >= endlist) {
 683                                 fprintf(stderr, "\n");
 684                                 break;
 685                         }
 686                         for (w = fp->len; w < width; w++)
 687                                 putc(' ', stderr);
 688                 }
 689         }
 690 }
 691
 692 /*
 693  * Skip over directory entries that are not on the tape
 694  *
 695  * First have to get definition of a dirent.
 696  */
 697 #undef DIRBLKSIZ
 698
 699 struct dirent *
 700 glob_readdir(RST_DIR *dirp)
 701 {
 702         static union {
 703                 uint8_t storage[_DIRENT_RECLEN(NAME_MAX)];
 704                 struct dirent aligment;
 705         } adirent;
 706         struct direct *dp;
 707         struct dirent *adp;
 708
 709         while ((dp = rst_readdir(dirp)) != NULL) {
 710                 if (!vflag && dp->d_ino == WINO)
 711                         continue;
 712                 if (dflag || TSTINO(dp->d_ino, dumpmap))
 713                         break;
 714         }
 715         if (dp == NULL)
 716                 return (NULL);
 717         adp = (struct dirent *)&adirent;
 718         adp->d_ino = dp->d_ino;
 719         adp->d_namlen = dp->d_namlen;
 720         strcpy(adp->d_name, dp->d_name);
 721         return (adp);
 722 }
 723
 724 /*
 725  * Return st_mode information in response to stat or lstat calls
 726  */
 727 static int
 728 glob_stat(const char *name, struct stat *stp)
 729 {
 730         struct direct *dp;
 731
 732         dp = pathsearch(name);
 733         if (dp == NULL || (!dflag && TSTINO(dp->d_ino, dumpmap) == 0) ||
 734             (!vflag && dp->d_ino == WINO))
 735                 return (-1);
 736         if (inodetype(dp->d_ino) == NODE)
 737                 stp->st_mode = IFDIR;
 738         else
 739                 stp->st_mode = IFREG;
 740         return (0);
 741 }
 742
 743 /*
 744  * Comparison routine for qsort.
 745  */
 746 static int
 747 fcmp(const void *f1, const void *f2)
 748 {
 749         return (strcmp(((struct afile *)f1)->fname,
 750             ((struct afile *)f2)->fname));
 751 }
 752
 753 /*
 754  * respond to interrupts
 755  */
 756 void
 757 onintr(int signo)
 758 {
 759         if (command == 'i' && runshell)
 760                 longjmp(reset, 1);
 761         if (reply("restore interrupted, continue") == FAIL)
 762                 done(1);
 763 }