restore/dirs.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) 1983, 1993
  11  *      The Regents of the University of California.  All rights reserved.
  12  * (c) UNIX System Laboratories, Inc.
  13  * All or some portions of this file are derived from material licensed
  14  * to the University of California by American Telephone and Telegraph
  15  * Co. or Unix System Laboratories, Inc. and are reproduced herein with
  16  * the permission of UNIX System Laboratories, Inc.
  17  *
  18  * Redistribution and use in source and binary forms, with or without
  19  * modification, are permitted provided that the following conditions
  20  * are met:
  21  * 1. Redistributions of source code must retain the above copyright
  22  *    notice, this list of conditions and the following disclaimer.
  23  * 2. Redistributions in binary form must reproduce the above copyright
  24  *    notice, this list of conditions and the following disclaimer in the
  25  *    documentation and/or other materials provided with the distribution.
  26  * 3. All advertising materials mentioning features or use of this software
  27  *    must display the following acknowledgement:
  28  *      This product includes software developed by the University of
  29  *      California, Berkeley and its contributors.
  30  * 4. Neither the name of the University nor the names of its contributors
  31  *    may be used to endorse or promote products derived from this software
  32  *    without specific prior written permission.
  33  *
  34  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  35  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  36  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  37  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  38  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  39  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  40  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  41  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  42  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  43  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  44  * SUCH DAMAGE.
  45  */
  46
  47 #ifndef lint
  48 #if 0
  49 static char sccsid[] = "@(#)dirs.c      8.7 (Berkeley) 5/1/95";
  50 #endif
  51 static const char rcsid[] =
  52         "$Id: dirs.c,v 1.2 1999/10/11 12:53:23 stelian Exp $";
  53 #endif /* not lint */
  54
  55 #include <sys/param.h>
  56 #include <sys/file.h>
  57 #include <sys/stat.h>
  58
  59 #ifdef  __linux__
  60 #include <linux/ext2_fs.h>
  61 #include <bsdcompat.h>
  62 #else   /* __linux__ */
  63 #include <ufs/ufs/dinode.h>
  64 #include <ufs/ufs/dir.h>
  65 #endif  /* __linux__ */
  66 #include <protocols/dumprestore.h>
  67
  68 #include <err.h>
  69 #include <errno.h>
  70 #include <stdio.h>
  71 #include <stdlib.h>
  72 #include <string.h>
  73 #include <unistd.h>
  74
  75 #ifdef  __linux__
  76 #include <endian.h>
  77 #else
  78 #include <machine/endian.h>
  79 #endif
  80
  81 #include "pathnames.h"
  82 #include "restore.h"
  83 #include "extern.h"
  84
  85 /*
  86  * Symbol table of directories read from tape.
  87  */
  88 #define HASHSIZE        1000
  89 #define INOHASH(val) (val % HASHSIZE)
  90 struct inotab {
  91         struct  inotab *t_next;
  92         ino_t   t_ino;
  93         int32_t t_seekpt;
  94         int32_t t_size;
  95 };
  96 static struct inotab *inotab[HASHSIZE];
  97
  98 /*
  99  * Information retained about directories.
 100  */
 101 struct modeinfo {
 102         ino_t ino;
 103         struct timeval timep[2];
 104         mode_t mode;
 105         uid_t uid;
 106         gid_t gid;
 107         int flags;
 108 };
 109
 110 /*
 111  * Definitions for library routines operating on directories.
 112  */
 113 #undef DIRBLKSIZ
 114 #define DIRBLKSIZ 1024
 115 struct rstdirdesc {
 116         int     dd_fd;
 117         int32_t dd_loc;
 118         int32_t dd_size;
 119         char    dd_buf[DIRBLKSIZ];
 120 };
 121
 122 /*
 123  * Global variables for this file.
 124  */
 125 static long     seekpt;
 126 static FILE     *df, *mf;
 127 static RST_DIR  *dirp;
 128 static char     dirfile[MAXPATHLEN] = "#";      /* No file */
 129 static char     modefile[MAXPATHLEN] = "#";     /* No file */
 130 static char     dot[2] = ".";                   /* So it can be modified */
 131
 132 /*
 133  * Format of old style directories.
 134  */
 135 #define ODIRSIZ 14
 136 struct odirect {
 137         u_short d_ino;
 138         char    d_name[ODIRSIZ];
 139 };
 140
 141 #ifdef  __linux__
 142 static struct inotab    *allocinotab __P((ino_t, struct new_bsd_inode *, long));
 143 #else
 144 static struct inotab    *allocinotab __P((ino_t, struct dinode *, long));
 145 #endif
 146 static void              dcvt __P((struct odirect *, struct direct *));
 147 static void              flushent __P((void));
 148 static struct inotab    *inotablookup __P((ino_t));
 149 static RST_DIR          *opendirfile __P((const char *));
 150 static void              putdir __P((char *, long));
 151 static void              putent __P((struct direct *));
 152 static void              rst_seekdir __P((RST_DIR *, long, long));
 153 static long              rst_telldir __P((RST_DIR *));
 154 static struct direct    *searchdir __P((ino_t, char *));
 155
 156 /*
 157  *      Extract directory contents, building up a directory structure
 158  *      on disk for extraction by name.
 159  *      If genmode is requested, save mode, owner, and times for all
 160  *      directories on the tape.
 161  */
 162 void
 163 extractdirs(genmode)
 164         int genmode;
 165 {
 166         register int i;
 167 #ifdef  __linux__
 168         register struct new_bsd_inode *ip;
 169 #else
 170         register struct dinode *ip;
 171 #endif
 172         struct inotab *itp;
 173         struct direct nulldir;
 174         int fd;
 175
 176         vprintf(stdout, "Extract directories from tape\n");
 177         (void) sprintf(dirfile, "%s/rstdir%ld", tmpdir, dumpdate);
 178         if (command != 'r' && command != 'R') {
 179                 (void *) strcat(dirfile, "-XXXXXX");
 180                 fd = mkstemp(dirfile);
 181         } else
 182                 fd = open(dirfile, O_RDWR|O_CREAT|O_EXCL, 0666);
 183         if (fd == -1 || (df = fdopen(fd, "w")) == NULL) {
 184                 if (fd != -1)
 185                         close(fd);
 186                 warn("%s - cannot create directory temporary\nfopen", dirfile);
 187                 done(1);
 188         }
 189         if (genmode != 0) {
 190                 (void) sprintf(modefile, "%s/rstmode%ld", tmpdir, dumpdate);
 191                 if (command != 'r' && command != 'R') {
 192                         (void *) strcat(modefile, "-XXXXXX");
 193                         fd = mkstemp(modefile);
 194                 } else
 195                         fd = open(modefile, O_RDWR|O_CREAT|O_EXCL, 0666);
 196                 if (fd == -1 || (mf = fdopen(fd, "w")) == NULL) {
 197                         if (fd != -1)
 198                                 close(fd);
 199                         warn("%s - cannot create modefile\nfopen", modefile);
 200                         done(1);
 201                 }
 202         }
 203         nulldir.d_ino = 0;
 204         nulldir.d_type = DT_DIR;
 205         nulldir.d_namlen = 1;
 206         (void) strcpy(nulldir.d_name, "/");
 207         nulldir.d_reclen = DIRSIZ(0, &nulldir);
 208         for (;;) {
 209                 curfile.name = "<directory file - name unknown>";
 210                 curfile.action = USING;
 211                 ip = curfile.dip;
 212                 if (ip == NULL || (ip->di_mode & IFMT) != IFDIR) {
 213                         (void) fclose(df);
 214                         dirp = opendirfile(dirfile);
 215                         if (dirp == NULL)
 216                                 fprintf(stderr, "opendirfile: %s\n",
 217                                     strerror(errno));
 218                         if (mf != NULL)
 219                                 (void) fclose(mf);
 220                         i = dirlookup(dot);
 221                         if (i == 0)
 222                                 panic("Root directory is not on tape\n");
 223                         return;
 224                 }
 225                 itp = allocinotab(curfile.ino, ip, seekpt);
 226                 getfile(putdir, xtrnull);
 227                 putent(&nulldir);
 228                 flushent();
 229                 itp->t_size = seekpt - itp->t_seekpt;
 230         }
 231 }
 232
 233 /*
 234  * skip over all the directories on the tape
 235  */
 236 void
 237 skipdirs()
 238 {
 239
 240         while (curfile.dip && (curfile.dip->di_mode & IFMT) == IFDIR) {
 241                 skipfile();
 242         }
 243 }
 244
 245 /*
 246  *      Recursively find names and inumbers of all files in subtree
 247  *      pname and pass them off to be processed.
 248  */
 249 void
 250 treescan(pname, ino, todo)
 251         char *pname;
 252         ino_t ino;
 253         long (*todo) __P((char *, ino_t, int));
 254 {
 255         register struct inotab *itp;
 256         register struct direct *dp;
 257         int namelen;
 258         long bpt;
 259         char locname[MAXPATHLEN + 1];
 260
 261         itp = inotablookup(ino);
 262         if (itp == NULL) {
 263                 /*
 264                  * Pname is name of a simple file or an unchanged directory.
 265                  */
 266                 (void) (*todo)(pname, ino, LEAF);
 267                 return;
 268         }
 269         /*
 270          * Pname is a dumped directory name.
 271          */
 272         if ((*todo)(pname, ino, NODE) == FAIL)
 273                 return;
 274         /*
 275          * begin search through the directory
 276          * skipping over "." and ".."
 277          */
 278         (void) strncpy(locname, pname, sizeof(locname) - 1);
 279         locname[sizeof(locname) - 1] = '\0';
 280         (void) strncat(locname, "/", sizeof(locname) - strlen(locname));
 281         namelen = strlen(locname);
 282         rst_seekdir(dirp, itp->t_seekpt, itp->t_seekpt);
 283         dp = rst_readdir(dirp); /* "." */
 284         if (dp != NULL && strcmp(dp->d_name, ".") == 0)
 285                 dp = rst_readdir(dirp); /* ".." */
 286         else
 287                 fprintf(stderr, "Warning: `.' missing from directory %s\n",
 288                         pname);
 289         if (dp != NULL && strcmp(dp->d_name, "..") == 0)
 290                 dp = rst_readdir(dirp); /* first real entry */
 291         else
 292                 fprintf(stderr, "Warning: `..' missing from directory %s\n",
 293                         pname);
 294         bpt = rst_telldir(dirp);
 295         /*
 296          * a zero inode signals end of directory
 297          */
 298         while (dp != NULL) {
 299                 locname[namelen] = '\0';
 300                 if (namelen + dp->d_namlen >= sizeof(locname)) {
 301                         fprintf(stderr, "%s%s: name exceeds %d char\n",
 302                                 locname, dp->d_name, sizeof(locname) - 1);
 303                 } else {
 304                         (void) strncat(locname, dp->d_name, (int)dp->d_namlen);
 305                         treescan(locname, dp->d_ino, todo);
 306                         rst_seekdir(dirp, bpt, itp->t_seekpt);
 307                 }
 308                 dp = rst_readdir(dirp);
 309                 bpt = rst_telldir(dirp);
 310         }
 311 }
 312
 313 /*
 314  * Lookup a pathname which is always assumed to start from the ROOTINO.
 315  */
 316 struct direct *
 317 pathsearch(pathname)
 318         const char *pathname;
 319 {
 320         ino_t ino;
 321         struct direct *dp;
 322         char *path, *name, buffer[MAXPATHLEN];
 323
 324         strcpy(buffer, pathname);
 325         path = buffer;
 326         ino = ROOTINO;
 327         while (*path == '/')
 328                 path++;
 329         dp = NULL;
 330         while ((name = strsep(&path, "/")) != NULL && *name != '\0') {
 331                 if ((dp = searchdir(ino, name)) == NULL)
 332                         return (NULL);
 333                 ino = dp->d_ino;
 334         }
 335         return (dp);
 336 }
 337
 338 /*
 339  * Lookup the requested name in directory inum.
 340  * Return its inode number if found, zero if it does not exist.
 341  */
 342 static struct direct *
 343 searchdir(inum, name)
 344         ino_t   inum;
 345         char    *name;
 346 {
 347         register struct direct *dp;
 348         register struct inotab *itp;
 349         int len;
 350
 351         itp = inotablookup(inum);
 352         if (itp == NULL)
 353                 return (NULL);
 354         rst_seekdir(dirp, itp->t_seekpt, itp->t_seekpt);
 355         len = strlen(name);
 356         do {
 357                 dp = rst_readdir(dirp);
 358                 if (dp == NULL)
 359                         return (NULL);
 360         } while (dp->d_namlen != len || strncmp(dp->d_name, name, len) != 0);
 361         return (dp);
 362 }
 363
 364 /*
 365  * Put the directory entries in the directory file
 366  */
 367 static void
 368 putdir(buf, size)
 369         char *buf;
 370         long size;
 371 {
 372         struct direct cvtbuf;
 373         register struct odirect *odp;
 374         struct odirect *eodp;
 375         register struct direct *dp;
 376         long loc, i;
 377
 378         if (cvtflag) {
 379                 eodp = (struct odirect *)&buf[size];
 380                 for (odp = (struct odirect *)buf; odp < eodp; odp++)
 381                         if (odp->d_ino != 0) {
 382                                 dcvt(odp, &cvtbuf);
 383                                 putent(&cvtbuf);
 384                         }
 385         } else {
 386                 for (loc = 0; loc < size; ) {
 387                         dp = (struct direct *)(buf + loc);
 388 #ifdef  DIRDEBUG
 389                         printf ("reclen = %d, namlen = %d, type = %d\n",
 390                                 dp->d_reclen, dp->d_namlen, dp->d_type);
 391 #endif
 392                         if (Bcvt)
 393                                 swabst((u_char *)"ls", (u_char *) dp);
 394                         if (oldinofmt && dp->d_ino != 0) {
 395 #ifdef  __linux__
 396                                 if (Bcvt)
 397                                         swabst((u_char *)"s", (u_char *)&dp->d_namlen);
 398 #else
 399 #                               if BYTE_ORDER == BIG_ENDIAN
 400                                         if (Bcvt)
 401                                                 dp->d_namlen = dp->d_type;
 402 #                               else
 403                                         if (!Bcvt)
 404                                                 dp->d_namlen = dp->d_type;
 405 #                               endif
 406 #endif  /* __linux__ */
 407                                 dp->d_type = DT_UNKNOWN;
 408                         }
 409 #ifdef  __linux__
 410                         /*
 411                          * Horrible hack to read FreeBSD 2.0 dumps
 412                          */
 413                         if (!oldinofmt)
 414                                 swabst((u_char *)"6bs", (u_char *) dp);
 415 #endif  /* __linux__ */
 416 #ifdef  DIRDEBUG
 417                         printf ("reclen = %d, namlen = %d, type = %d\n",
 418                                 dp->d_reclen, dp->d_namlen, dp->d_type);
 419 #endif
 420                         i = DIRBLKSIZ - (loc & (DIRBLKSIZ - 1));
 421                         if ((dp->d_reclen & 0x3) != 0 ||
 422                             dp->d_reclen > i ||
 423                             dp->d_reclen < DIRSIZ(0, dp) ||
 424                             dp->d_namlen > NAME_MAX) {
 425                                 vprintf(stdout, "Mangled directory: ");
 426                                 if ((dp->d_reclen & 0x3) != 0)
 427                                         vprintf(stdout,
 428                                            "reclen not multiple of 4 ");
 429                                 if (dp->d_reclen < DIRSIZ(0, dp))
 430                                         vprintf(stdout,
 431                                            "reclen less than DIRSIZ (%d < %d) ",
 432                                            dp->d_reclen, DIRSIZ(0, dp));
 433                                 if (dp->d_namlen > NAME_MAX)
 434                                         vprintf(stdout,
 435                                            "reclen name too big (%d > %d) ",
 436                                            dp->d_namlen, NAME_MAX);
 437                                 vprintf(stdout, "\n");
 438                                 loc += i;
 439                                 continue;
 440                         }
 441                         loc += dp->d_reclen;
 442                         if (dp->d_ino != 0) {
 443                                 putent(dp);
 444                         }
 445                 }
 446         }
 447 }
 448
 449 /*
 450  * These variables are "local" to the following two functions.
 451  */
 452 char dirbuf[DIRBLKSIZ];
 453 long dirloc = 0;
 454 long prev = 0;
 455
 456 /*
 457  * add a new directory entry to a file.
 458  */
 459 static void
 460 putent(dp)
 461         struct direct *dp;
 462 {
 463         dp->d_reclen = DIRSIZ(0, dp);
 464         if (dirloc + dp->d_reclen > DIRBLKSIZ) {
 465                 ((struct direct *)(dirbuf + prev))->d_reclen =
 466                     DIRBLKSIZ - prev;
 467                 (void) fwrite(dirbuf, 1, DIRBLKSIZ, df);
 468                 dirloc = 0;
 469         }
 470         memmove(dirbuf + dirloc, dp, (long)dp->d_reclen);
 471         prev = dirloc;
 472         dirloc += dp->d_reclen;
 473 }
 474
 475 /*
 476  * flush out a directory that is finished.
 477  */
 478 static void
 479 flushent()
 480 {
 481         ((struct direct *)(dirbuf + prev))->d_reclen = DIRBLKSIZ - prev;
 482         (void) fwrite(dirbuf, (int)dirloc, 1, df);
 483         seekpt = ftell(df);
 484         dirloc = 0;
 485 }
 486
 487 static void
 488 dcvt(odp, ndp)
 489         register struct odirect *odp;
 490         register struct direct *ndp;
 491 {
 492
 493         memset(ndp, 0, (long)(sizeof *ndp));
 494         ndp->d_ino =  odp->d_ino;
 495         ndp->d_type = DT_UNKNOWN;
 496         (void) strncpy(ndp->d_name, odp->d_name, ODIRSIZ);
 497         ndp->d_namlen = strlen(ndp->d_name);
 498         ndp->d_reclen = DIRSIZ(0, ndp);
 499 }
 500
 501 /*
 502  * Seek to an entry in a directory.
 503  * Only values returned by rst_telldir should be passed to rst_seekdir.
 504  * This routine handles many directories in a single file.
 505  * It takes the base of the directory in the file, plus
 506  * the desired seek offset into it.
 507  */
 508 static void
 509 rst_seekdir(dirp, loc, base)
 510         register RST_DIR *dirp;
 511         long loc, base;
 512 {
 513
 514         if (loc == rst_telldir(dirp))
 515                 return;
 516         loc -= base;
 517         if (loc < 0)
 518                 fprintf(stderr, "bad seek pointer to rst_seekdir %ld\n", loc);
 519         (void) lseek(dirp->dd_fd, base + (loc & ~(DIRBLKSIZ - 1)), SEEK_SET);
 520         dirp->dd_loc = loc & (DIRBLKSIZ - 1);
 521         if (dirp->dd_loc != 0)
 522                 dirp->dd_size = read(dirp->dd_fd, dirp->dd_buf, DIRBLKSIZ);
 523 }
 524
 525 /*
 526  * get next entry in a directory.
 527  */
 528 struct direct *
 529 rst_readdir(dirp)
 530         register RST_DIR *dirp;
 531 {
 532         register struct direct *dp;
 533
 534         for (;;) {
 535                 if (dirp->dd_loc == 0) {
 536                         dirp->dd_size = read(dirp->dd_fd, dirp->dd_buf,
 537                             DIRBLKSIZ);
 538                         if (dirp->dd_size <= 0) {
 539                                 dprintf(stderr, "error reading directory\n");
 540                                 return (NULL);
 541                         }
 542                 }
 543                 if (dirp->dd_loc >= dirp->dd_size) {
 544                         dirp->dd_loc = 0;
 545                         continue;
 546                 }
 547                 dp = (struct direct *)(dirp->dd_buf + dirp->dd_loc);
 548                 if (dp->d_reclen == 0 ||
 549                     dp->d_reclen > DIRBLKSIZ + 1 - dirp->dd_loc) {
 550                         dprintf(stderr, "corrupted directory: bad reclen %d\n",
 551                                 dp->d_reclen);
 552                         return (NULL);
 553                 }
 554                 dirp->dd_loc += dp->d_reclen;
 555                 if (dp->d_ino == 0 && strcmp(dp->d_name, "/") == 0)
 556                         return (NULL);
 557                 if (dp->d_ino >= maxino) {
 558                         dprintf(stderr, "corrupted directory: bad inum %d\n",
 559                                 dp->d_ino);
 560                         continue;
 561                 }
 562                 return (dp);
 563         }
 564 }
 565
 566 /*
 567  * Simulate the opening of a directory
 568  */
 569 RST_DIR *
 570 rst_opendir(name)
 571         const char *name;
 572 {
 573         struct inotab *itp;
 574         RST_DIR *dirp;
 575         ino_t ino;
 576
 577         if ((ino = dirlookup(name)) > 0 &&
 578             (itp = inotablookup(ino)) != NULL) {
 579                 dirp = opendirfile(dirfile);
 580                 rst_seekdir(dirp, itp->t_seekpt, itp->t_seekpt);
 581                 return (dirp);
 582         }
 583         return (NULL);
 584 }
 585
 586 /*
 587  * In our case, there is nothing to do when closing a directory.
 588  */
 589 void
 590 rst_closedir(dirp)
 591         RST_DIR *dirp;
 592 {
 593
 594         (void)close(dirp->dd_fd);
 595         free(dirp);
 596         return;
 597 }
 598
 599 /*
 600  * Simulate finding the current offset in the directory.
 601  */
 602 static long
 603 rst_telldir(dirp)
 604         RST_DIR *dirp;
 605 {
 606         return ((long)lseek(dirp->dd_fd,
 607             (off_t)0, SEEK_CUR) - dirp->dd_size + dirp->dd_loc);
 608 }
 609
 610 /*
 611  * Open a directory file.
 612  */
 613 static RST_DIR *
 614 opendirfile(name)
 615         const char *name;
 616 {
 617         register RST_DIR *dirp;
 618         register int fd;
 619
 620         if ((fd = open(name, O_RDONLY)) == -1)
 621                 return (NULL);
 622         if ((dirp = malloc(sizeof(RST_DIR))) == NULL) {
 623                 (void)close(fd);
 624                 return (NULL);
 625         }
 626         dirp->dd_fd = fd;
 627         dirp->dd_loc = 0;
 628         return (dirp);
 629 }
 630
 631 /*
 632  * Set the mode, owner, and times for all new or changed directories
 633  */
 634 void
 635 setdirmodes(flags)
 636         int flags;
 637 {
 638         FILE *mf;
 639         struct modeinfo node;
 640         struct entry *ep;
 641         char *cp;
 642
 643         vprintf(stdout, "Set directory mode, owner, and times.\n");
 644         if (command == 'r' || command == 'R')
 645                 (void) sprintf(modefile, "%s/rstmode%ld", tmpdir, dumpdate);
 646         if (modefile[0] == '#') {
 647                 panic("modefile not defined\n");
 648                 fprintf(stderr, "directory mode, owner, and times not set\n");
 649                 return;
 650         }
 651         mf = fopen(modefile, "r");
 652         if (mf == NULL) {
 653                 fprintf(stderr, "fopen: %s\n", strerror(errno));
 654                 fprintf(stderr, "cannot open mode file %s\n", modefile);
 655                 fprintf(stderr, "directory mode, owner, and times not set\n");
 656                 return;
 657         }
 658         clearerr(mf);
 659         for (;;) {
 660                 (void) fread((char *)&node, 1, sizeof(struct modeinfo), mf);
 661                 if (feof(mf))
 662                         break;
 663                 ep = lookupino(node.ino);
 664                 if (command == 'i' || command == 'x') {
 665                         if (ep == NULL)
 666                                 continue;
 667                         if ((flags & FORCE) == 0 && ep->e_flags & EXISTED) {
 668                                 ep->e_flags &= ~NEW;
 669                                 continue;
 670                         }
 671                         if (node.ino == ROOTINO &&
 672                             reply("set owner/mode for '.'") == FAIL)
 673                                 continue;
 674                 }
 675                 if (ep == NULL) {
 676                         panic("cannot find directory inode %d\n", node.ino);
 677                 } else {
 678                         cp = myname(ep);
 679                         (void) chown(cp, node.uid, node.gid);
 680                         (void) chmod(cp, node.mode);
 681 #ifdef  __linux__
 682                         (void) setflags(cp, node.flags);
 683 #else
 684                         (void) chflags(cp, node.flags);
 685 #endif
 686                         utimes(cp, node.timep);
 687                         ep->e_flags &= ~NEW;
 688                 }
 689         }
 690         if (ferror(mf))
 691                 panic("error setting directory modes\n");
 692         (void) fclose(mf);
 693 }
 694
 695 /*
 696  * Generate a literal copy of a directory.
 697  */
 698 int
 699 genliteraldir(name, ino)
 700         char *name;
 701         ino_t ino;
 702 {
 703         register struct inotab *itp;
 704         int ofile, dp, i, size;
 705         char buf[BUFSIZ];
 706
 707         itp = inotablookup(ino);
 708         if (itp == NULL)
 709                 panic("Cannot find directory inode %d named %s\n", ino, name);
 710         if ((ofile = open(name, O_WRONLY | O_CREAT | O_TRUNC, 0666)) < 0) {
 711                 fprintf(stderr, "%s: ", name);
 712                 (void) fflush(stderr);
 713                 fprintf(stderr, "cannot create file: %s\n", strerror(errno));
 714                 return (FAIL);
 715         }
 716         rst_seekdir(dirp, itp->t_seekpt, itp->t_seekpt);
 717         dp = dup(dirp->dd_fd);
 718         for (i = itp->t_size; i > 0; i -= BUFSIZ) {
 719                 size = i < BUFSIZ ? i : BUFSIZ;
 720                 if (read(dp, buf, (int) size) == -1) {
 721                         fprintf(stderr,
 722                                 "write error extracting inode %ld, name %s\n",
 723                                 curfile.ino, curfile.name);
 724                         fprintf(stderr, "read: %s\n", strerror(errno));
 725                         done(1);
 726                 }
 727                 if (!Nflag && write(ofile, buf, (int) size) == -1) {
 728                         fprintf(stderr,
 729                                 "write error extracting inode %ld, name %s\n",
 730                                 curfile.ino, curfile.name);
 731                         fprintf(stderr, "write: %s\n", strerror(errno));
 732                         done(1);
 733                 }
 734         }
 735         (void) close(dp);
 736         (void) close(ofile);
 737         return (GOOD);
 738 }
 739
 740 /*
 741  * Determine the type of an inode
 742  */
 743 int
 744 inodetype(ino)
 745         ino_t ino;
 746 {
 747         struct inotab *itp;
 748
 749         itp = inotablookup(ino);
 750         if (itp == NULL)
 751                 return (LEAF);
 752         return (NODE);
 753 }
 754
 755 /*
 756  * Allocate and initialize a directory inode entry.
 757  * If requested, save its pertinent mode, owner, and time info.
 758  */
 759 static struct inotab *
 760 allocinotab(ino, dip, seekpt)
 761         ino_t ino;
 762 #ifdef  __linux__
 763         struct new_bsd_inode *dip;
 764 #else
 765         struct dinode *dip;
 766 #endif
 767         long seekpt;
 768 {
 769         register struct inotab  *itp;
 770         struct modeinfo node;
 771
 772         itp = calloc(1, sizeof(struct inotab));
 773         if (itp == NULL)
 774                 panic("no memory directory table\n");
 775         itp->t_next = inotab[INOHASH(ino)];
 776         inotab[INOHASH(ino)] = itp;
 777         itp->t_ino = ino;
 778         itp->t_seekpt = seekpt;
 779         if (mf == NULL)
 780                 return (itp);
 781         node.ino = ino;
 782 #ifdef  __linux__
 783         node.timep[0].tv_sec = dip->di_atime.tv_sec;
 784         node.timep[0].tv_usec = dip->di_atime.tv_usec;
 785         node.timep[1].tv_sec = dip->di_mtime.tv_sec;
 786         node.timep[1].tv_usec = dip->di_mtime.tv_usec;
 787 #else   /* __linux__ */
 788         node.timep[0].tv_sec = dip->di_atime;
 789         node.timep[0].tv_usec = dip->di_atimensec / 1000;
 790         node.timep[1].tv_sec = dip->di_mtime;
 791         node.timep[1].tv_usec = dip->di_mtimensec / 1000;
 792 #endif  /* __linux__ */
 793         node.mode = dip->di_mode;
 794         node.flags = dip->di_flags;
 795         node.uid = dip->di_uid;
 796         node.gid = dip->di_gid;
 797         (void) fwrite((char *)&node, 1, sizeof(struct modeinfo), mf);
 798         return (itp);
 799 }
 800
 801 /*
 802  * Look up an inode in the table of directories
 803  */
 804 static struct inotab *
 805 inotablookup(ino)
 806         ino_t   ino;
 807 {
 808         register struct inotab *itp;
 809
 810         for (itp = inotab[INOHASH(ino)]; itp != NULL; itp = itp->t_next)
 811                 if (itp->t_ino == ino)
 812                         return (itp);
 813         return (NULL);
 814 }
 815
 816 /*
 817  * Clean up and exit
 818  */
 819 void
 820 done(exitcode)
 821         int exitcode;
 822 {
 823
 824         closemt();
 825         if (modefile[0] != '#')
 826                 (void) unlink(modefile);
 827         if (dirfile[0] != '#')
 828                 (void) unlink(dirfile);
 829         exit(exitcode);
 830 }