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 <stelian@popies.net>, 1999-2000
   6  *      Stelian Pop <stelian@popies.net> - Alcôve <www.alcove.com>, 2000-2002
   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. Neither the name of the University nor the names of its contributors
  27  *    may be used to endorse or promote products derived from this software
  28  *    without specific prior written permission.
  29  *
  30  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  31  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  32  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  33  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  34  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  35  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  36  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  37  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  38  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  39  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  40  * SUCH DAMAGE.
  41  */
  42
  43 #ifndef lint
  44 static const char rcsid[] =
  45         "$Id: dirs.c,v 1.28 2004/05/25 10:39:30 stelian Exp $";
  46 #endif /* not lint */
  47
  48 #include <config.h>
  49 #include <compatlfs.h>
  50 #include <sys/types.h>
  51 #include <sys/param.h>
  52 #include <sys/file.h>
  53 #include <sys/stat.h>
  54
  55 #ifdef  __linux__
  56 #ifdef HAVE_EXT2FS_EXT2_FS_H
  57 #include <ext2fs/ext2_fs.h>
  58 #else
  59 #include <linux/ext2_fs.h>
  60 #endif
  61 #include <bsdcompat.h>
  62 #else   /* __linux__ */
  63 #ifdef sunos
  64 #include <sys/fcntl.h>
  65 #include <bsdcompat.h>
  66 #else
  67 #include <ufs/ufs/dinode.h>
  68 #include <ufs/ufs/dir.h>
  69 #endif
  70 #endif  /* __linux__ */
  71 #include <protocols/dumprestore.h>
  72
  73 #include <compaterr.h>
  74 #include <errno.h>
  75 #include <stdio.h>
  76 #include <stdlib.h>
  77 #include <string.h>
  78 #include <unistd.h>
  79
  80 #ifdef  __linux__
  81 #include <endian.h>
  82 #else
  83 #ifdef sunos
  84 #include <arpa/nameser_compat.h>
  85 #else
  86 #include <machine/endian.h>
  87 #endif
  88 #endif
  89
  90 #include "pathnames.h"
  91 #include "restore.h"
  92 #include "extern.h"
  93
  94 /*
  95  * Symbol table of directories read from tape.
  96  */
  97 #define HASHSIZE        1000
  98 #define INOHASH(val) (val % HASHSIZE)
  99 struct inotab {
 100         struct  inotab *t_next;
 101         dump_ino_t t_ino;
 102         OFF_T   t_seekpt;
 103         OFF_T   t_size;
 104 };
 105 static struct inotab *inotab[HASHSIZE];
 106
 107 /*
 108  * Information retained about directories.
 109  */
 110 struct modeinfo {
 111         dump_ino_t ino;
 112         struct timeval timep[2];
 113         mode_t mode;
 114         uid_t uid;
 115         gid_t gid;
 116         unsigned int flags;
 117 };
 118
 119 /*
 120  * Definitions for library routines operating on directories.
 121  */
 122 #undef DIRBLKSIZ
 123 #define DIRBLKSIZ 1024
 124 struct rstdirdesc {
 125         int     dd_fd;
 126         int32_t dd_loc;
 127         int32_t dd_size;
 128         char    dd_buf[DIRBLKSIZ];
 129 };
 130
 131 /*
 132  * Global variables for this file.
 133  */
 134 static OFF_T    seekpt;
 135 static FILE     *df, *mf;
 136 static RST_DIR  *dirp;
 137 static char     dirfile[MAXPATHLEN] = "#";      /* No file */
 138 static char     modefile[MAXPATHLEN] = "#";     /* No file */
 139 static char     dot[2] = ".";                   /* So it can be modified */
 140
 141 /*
 142  * Format of old style directories.
 143  */
 144 #define ODIRSIZ 14
 145 struct odirect {
 146         u_short d_ino;
 147         char    d_name[ODIRSIZ];
 148 };
 149
 150 #if defined(__linux__) || defined(sunos)
 151 static struct inotab    *allocinotab __P((dump_ino_t, struct new_bsd_inode *, OFF_T));
 152 #else
 153 static struct inotab    *allocinotab __P((dump_ino_t, struct dinode *, OFF_T));
 154 #endif
 155 static void              dcvt __P((struct odirect *, struct direct *));
 156 static void              flushent __P((void));
 157 static struct inotab    *inotablookup __P((dump_ino_t));
 158 static RST_DIR          *opendirfile __P((const char *));
 159 static void              putdir __P((char *, size_t));
 160 static void              putent __P((struct direct *));
 161 static void             rst_seekdir __P((RST_DIR *, OFF_T, OFF_T));
 162 static OFF_T            rst_telldir __P((RST_DIR *));
 163 static struct direct    *searchdir __P((dump_ino_t, char *));
 164
 165 #ifdef sunos
 166 extern int fdsmtc;
 167 #endif
 168
 169 /*
 170  *      Extract directory contents, building up a directory structure
 171  *      on disk for extraction by name.
 172  *      If genmode is requested, save mode, owner, and times for all
 173  *      directories on the tape.
 174  */
 175 void
 176 extractdirs(int genmode)
 177 {
 178         int i;
 179 #if defined(__linux__) || defined(sunos)
 180         struct new_bsd_inode *ip;
 181 #else
 182         struct dinode *ip;
 183 #endif
 184         struct inotab *itp;
 185         struct direct nulldir;
 186         int fd;
 187
 188         Vprintf(stdout, "Extract directories from tape\n");
 189         (void) snprintf(dirfile, sizeof(dirfile), "%s/rstdir%ld", tmpdir,
 190                 (long)dumpdate);
 191         if (command != 'r' && command != 'R') {
 192                 (void) strncat(dirfile, "-XXXXXX",
 193                         sizeof(dirfile) - strlen(dirfile));
 194                 fd = MKSTEMP(dirfile);
 195         } else
 196                 fd = OPEN(dirfile, O_RDWR|O_CREAT|O_EXCL, 0666);
 197         if (fd == -1 || (df = fdopen(fd, "w")) == NULL) {
 198                 if (fd != -1)
 199                         close(fd);
 200                 err(1, "cannot create directory temporary %s", dirfile);
 201         }
 202         if (genmode != 0) {
 203                 (void) snprintf(modefile, sizeof(modefile), "%s/rstmode%ld", tmpdir, (long)dumpdate);
 204                 if (command != 'r' && command != 'R') {
 205                         (void) strncat(modefile, "-XXXXXX",
 206                                 sizeof(modefile) - strlen(modefile));
 207                         fd = MKSTEMP(modefile);
 208                 } else
 209                         fd = OPEN(modefile, O_RDWR|O_CREAT|O_EXCL, 0666);
 210                 if (fd == -1 || (mf = fdopen(fd, "w")) == NULL) {
 211                         if (fd != -1)
 212                                 close(fd);
 213                         err(1, "cannot create modefile %s", modefile);
 214                 }
 215         }
 216         nulldir.d_ino = 0;
 217         nulldir.d_type = DT_DIR;
 218         nulldir.d_namlen = 1;
 219         nulldir.d_name[0] = '/';
 220         nulldir.d_name[1] = '\0';
 221         nulldir.d_reclen = DIRSIZ(0, &nulldir);
 222         for (;;) {
 223                 curfile.name = "<directory file - name unknown>";
 224                 curfile.action = USING;
 225                 ip = curfile.dip;
 226                 if (ip == NULL || (ip->di_mode & IFMT) != IFDIR) {
 227                         if ( fclose(df) == EOF )
 228                                 err(1, "cannot write to file %s", dirfile);
 229                         dirp = opendirfile(dirfile);
 230                         if (dirp == NULL)
 231                                 warn("opendirfile");
 232                         if (mf != NULL && fclose(mf) == EOF )
 233                                 err(1, "cannot write to file %s", dirfile);
 234                         i = dirlookup(dot);
 235                         if (i == 0)
 236                                 panic("Root directory is not on tape\n");
 237                         return;
 238                 }
 239                 itp = allocinotab(curfile.ino, ip, seekpt);
 240                 getfile(putdir, xtrnull);
 241                 putent(&nulldir);
 242                 flushent();
 243                 itp->t_size = seekpt - itp->t_seekpt;
 244         }
 245 }
 246
 247 /*
 248  * skip over all the directories on the tape
 249  */
 250 void
 251 skipdirs(void)
 252 {
 253
 254         while (curfile.dip && (curfile.dip->di_mode & IFMT) == IFDIR) {
 255                 skipfile();
 256         }
 257 }
 258
 259 /*
 260  *      Recursively find names and inumbers of all files in subtree
 261  *      pname and pass them off to be processed.
 262  */
 263 void
 264 treescan(char *pname, dump_ino_t ino, long (*todo) __P((char *, dump_ino_t, int)))
 265 {
 266         struct inotab *itp;
 267         struct direct *dp;
 268         int namelen;
 269         OFF_T bpt;
 270         char locname[MAXPATHLEN + 1];
 271
 272         itp = inotablookup(ino);
 273         if (itp == NULL) {
 274                 /*
 275                  * Pname is name of a simple file or an unchanged directory.
 276                  */
 277                 (void) (*todo)(pname, ino, LEAF);
 278                 return;
 279         }
 280         /*
 281          * Pname is a dumped directory name.
 282          */
 283         if ((*todo)(pname, ino, NODE) == FAIL)
 284                 return;
 285         /*
 286          * begin search through the directory
 287          * skipping over "." and ".."
 288          */
 289         namelen = snprintf(locname, sizeof(locname), "%s/", pname);
 290         if (namelen >= (int)sizeof(locname))
 291                 namelen = sizeof(locname) - 1;
 292         rst_seekdir(dirp, itp->t_seekpt, itp->t_seekpt);
 293         dp = rst_readdir(dirp); /* "." */
 294         if (dp != NULL && strcmp(dp->d_name, ".") == 0)
 295                 dp = rst_readdir(dirp); /* ".." */
 296         else
 297                 fprintf(stderr, "Warning: `.' missing from directory %s\n",
 298                         pname);
 299         if (dp != NULL && strcmp(dp->d_name, "..") == 0)
 300                 dp = rst_readdir(dirp); /* first real entry */
 301         else
 302                 fprintf(stderr, "Warning: `..' missing from directory %s\n",
 303                         pname);
 304         bpt = rst_telldir(dirp);
 305         /*
 306          * a zero inode signals end of directory
 307          */
 308         while (dp != NULL) {
 309                 locname[namelen] = '\0';
 310                 if (namelen + dp->d_namlen >= (int)sizeof(locname)) {
 311                         fprintf(stderr, "%s%s: name exceeds %ld char\n",
 312                                 locname, dp->d_name, (long)sizeof(locname) - 1);
 313                 } else {
 314                         (void) strncat(locname, dp->d_name, (int)dp->d_namlen);
 315                         treescan(locname, dp->d_ino, todo);
 316                         rst_seekdir(dirp, bpt, itp->t_seekpt);
 317                 }
 318                 dp = rst_readdir(dirp);
 319                 bpt = rst_telldir(dirp);
 320         }
 321 }
 322
 323 /*
 324  * Lookup a pathname which is always assumed to start from the ROOTINO.
 325  */
 326 struct direct *
 327 pathsearch(const char *pathname)
 328 {
 329         dump_ino_t ino;
 330         struct direct *dp;
 331         char *path, *name, buffer[MAXPATHLEN];
 332
 333         strcpy(buffer, pathname);
 334         path = buffer;
 335         ino = ROOTINO;
 336         while (*path == '/')
 337                 path++;
 338         dp = NULL;
 339 #ifdef __linux__
 340         while ((name = strsep(&path, "/")) != NULL && *name /* != NULL */) {
 341 #else
 342         while ((name = strtok_r(NULL, "/", &path)) != NULL && *name /* != NULL */) {
 343 #endif
 344                 if ((dp = searchdir(ino, name)) == NULL)
 345                         return (NULL);
 346                 ino = dp->d_ino;
 347         }
 348         return (dp);
 349 }
 350
 351 /*
 352  * Lookup the requested name in directory inum.
 353  * Return its inode number if found, zero if it does not exist.
 354  */
 355 static struct direct *
 356 searchdir(dump_ino_t inum, char *name)
 357 {
 358         struct direct *dp;
 359         struct inotab *itp;
 360         int len;
 361
 362         itp = inotablookup(inum);
 363         if (itp == NULL)
 364                 return (NULL);
 365         rst_seekdir(dirp, itp->t_seekpt, itp->t_seekpt);
 366         len = strlen(name);
 367         do {
 368                 dp = rst_readdir(dirp);
 369                 if (dp == NULL)
 370                         return (NULL);
 371         } while (dp->d_namlen != len || strncmp(dp->d_name, name, len) != 0);
 372         return (dp);
 373 }
 374
 375 /*
 376  * Put the directory entries in the directory file
 377  */
 378 static void
 379 putdir(char *buf, size_t size)
 380 {
 381         struct direct cvtbuf;
 382         struct odirect *odp;
 383         struct odirect *eodp;
 384         struct direct *dp;
 385         long loc, i;
 386
 387         if (cvtflag && !ufs2flag) {
 388                 eodp = (struct odirect *)&buf[size];
 389                 for (odp = (struct odirect *)buf; odp < eodp; odp++)
 390                         if (odp->d_ino != 0) {
 391                                 dcvt(odp, &cvtbuf);
 392                                 putent(&cvtbuf);
 393                         }
 394         } else {
 395                 for (loc = 0; loc < (long)size; ) {
 396                         dp = (struct direct *)(buf + loc);
 397 #ifdef  DIRDEBUG
 398                         printf ("reclen = %d, namlen = %d, type = %d\n",
 399                                 dp->d_reclen, dp->d_namlen, dp->d_type);
 400 #endif
 401                         if (Bcvt)
 402                                 swabst((u_char *)"is", (u_char *) dp);
 403                         if (oldinofmt && dp->d_ino != 0) {
 404 #                               if BYTE_ORDER == BIG_ENDIAN
 405                                         if (Bcvt)
 406                                                 dp->d_namlen = dp->d_type;
 407 #                               else
 408                                         if (!Bcvt)
 409                                                 dp->d_namlen = dp->d_type;
 410 #                               endif
 411                                 if (dp->d_namlen == 0 && dp->d_type != 0)
 412                                         dp->d_namlen = dp->d_type;
 413                                 dp->d_type = DT_UNKNOWN;
 414                         }
 415 #ifdef  DIRDEBUG
 416                         printf ("reclen = %d, namlen = %d, type = %d\n",
 417                                 dp->d_reclen, dp->d_namlen, dp->d_type);
 418 #endif
 419                         i = DIRBLKSIZ - (loc & (DIRBLKSIZ - 1));
 420                         if ((dp->d_reclen & 0x3) != 0 ||
 421                             dp->d_reclen > i ||
 422                             dp->d_reclen < DIRSIZ(0, dp)
 423 #if MAXNAMLEN < 255
 424                             || dp->d_namlen > MAXNAMLEN
 425 #endif
 426                             ) {
 427                                 Vprintf(stdout, "Mangled directory: ");
 428                                 if ((dp->d_reclen & 0x3) != 0)
 429                                         Vprintf(stdout,
 430                                            "reclen not multiple of 4 ");
 431                                 if (dp->d_reclen < DIRSIZ(0, dp))
 432                                         Vprintf(stdout,
 433                                            "reclen less than DIRSIZ (%d < %d) ",
 434                                            dp->d_reclen, DIRSIZ(0, dp));
 435 #if MAXNAMLEN < 255
 436                                 if (dp->d_namlen > MAXNAMLEN)
 437                                         Vprintf(stdout,
 438                                            "reclen name too big (%d > %d) ",
 439                                            dp->d_namlen, MAXNAMLEN);
 440 #endif
 441                                 Vprintf(stdout, "\n");
 442                                 loc += i;
 443                                 continue;
 444                         }
 445                         loc += dp->d_reclen;
 446                         if (dp->d_ino != 0) {
 447                                 putent(dp);
 448                         }
 449                 }
 450         }
 451 }
 452
 453 /*
 454  * These variables are "local" to the following two functions.
 455  */
 456 static char dirbuf[DIRBLKSIZ];
 457 static long dirloc = 0;
 458 static long prev = 0;
 459
 460 /*
 461  * add a new directory entry to a file.
 462  */
 463 static void
 464 putent(struct direct *dp)
 465 {
 466         dp->d_reclen = DIRSIZ(0, dp);
 467         if (dirloc + dp->d_reclen > DIRBLKSIZ) {
 468                 ((struct direct *)(dirbuf + prev))->d_reclen =
 469                     DIRBLKSIZ - prev;
 470                 if ( fwrite(dirbuf, 1, DIRBLKSIZ, df) != DIRBLKSIZ )
 471                         err(1,"cannot write to file %s", dirfile);
 472                 dirloc = 0;
 473         }
 474         memmove(dirbuf + dirloc, dp, (size_t)dp->d_reclen);
 475         prev = dirloc;
 476         dirloc += dp->d_reclen;
 477 }
 478
 479 /*
 480  * flush out a directory that is finished.
 481  */
 482 static void
 483 flushent(void)
 484 {
 485         ((struct direct *)(dirbuf + prev))->d_reclen = DIRBLKSIZ - prev;
 486         if ( fwrite(dirbuf, (int)dirloc, 1, df) != 1 )
 487                 err(1, "cannot write to file %s", dirfile);
 488         seekpt = FTELL(df);
 489         if (seekpt == -1)
 490                 err(1, "cannot write to file %s", dirfile);
 491         dirloc = 0;
 492 }
 493
 494 static void
 495 dcvt(struct odirect *odp, struct direct *ndp)
 496 {
 497
 498         memset(ndp, 0, (size_t)(sizeof *ndp));
 499         ndp->d_ino =  odp->d_ino;
 500         ndp->d_type = DT_UNKNOWN;
 501         (void) strncpy(ndp->d_name, odp->d_name, ODIRSIZ);
 502         ndp->d_namlen = strlen(ndp->d_name);
 503         ndp->d_reclen = DIRSIZ(0, ndp);
 504 }
 505
 506 /*
 507  * Seek to an entry in a directory.
 508  * Only values returned by rst_telldir should be passed to rst_seekdir.
 509  * This routine handles many directories in a single file.
 510  * It takes the base of the directory in the file, plus
 511  * the desired seek offset into it.
 512  */
 513 static void
 514 rst_seekdir(RST_DIR *dirp, OFF_T loc, OFF_T base)
 515 {
 516
 517         if (loc == rst_telldir(dirp))
 518                 return;
 519         loc -= base;
 520         if (loc < 0)
 521                 fprintf(stderr, "bad seek pointer to rst_seekdir %lld\n", (long long int)loc);
 522         (void) LSEEK(dirp->dd_fd, base + (loc & ~(DIRBLKSIZ - 1)), SEEK_SET);
 523         dirp->dd_loc = loc & (DIRBLKSIZ - 1);
 524         if (dirp->dd_loc != 0)
 525                 dirp->dd_size = read(dirp->dd_fd, dirp->dd_buf, DIRBLKSIZ);
 526 }
 527
 528 /*
 529  * get next entry in a directory.
 530  */
 531 struct direct *
 532 rst_readdir(RST_DIR *dirp)
 533 {
 534         struct direct *dp;
 535
 536         for (;;) {
 537                 if (dirp->dd_loc == 0) {
 538                         dirp->dd_size = read(dirp->dd_fd, dirp->dd_buf,
 539                             DIRBLKSIZ);
 540                         if (dirp->dd_size <= 0) {
 541                                 Dprintf(stderr, "error reading directory\n");
 542                                 return (NULL);
 543                         }
 544                 }
 545                 if (dirp->dd_loc >= dirp->dd_size) {
 546                         dirp->dd_loc = 0;
 547                         continue;
 548                 }
 549                 dp = (struct direct *)(dirp->dd_buf + dirp->dd_loc);
 550                 if (dp->d_reclen == 0 ||
 551                     dp->d_reclen > DIRBLKSIZ + 1 - dirp->dd_loc) {
 552                         Dprintf(stderr, "corrupted directory: bad reclen %d\n",
 553                                 dp->d_reclen);
 554                         return (NULL);
 555                 }
 556                 dirp->dd_loc += dp->d_reclen;
 557                 if (dp->d_ino == 0 && strcmp(dp->d_name, "/") == 0)
 558                         return (NULL);
 559                 if (dp->d_ino >= maxino) {
 560                         Dprintf(stderr, "corrupted directory: bad inum %d\n",
 561                                 dp->d_ino);
 562                         continue;
 563                 }
 564                 return (dp);
 565         }
 566 }
 567
 568 /*
 569  * Simulate the opening of a directory
 570  */
 571 RST_DIR *
 572 rst_opendir(const char *name)
 573 {
 574         struct inotab *itp;
 575         RST_DIR *dirp;
 576         dump_ino_t ino;
 577
 578         if ((ino = dirlookup(name)) > 0 &&
 579             (itp = inotablookup(ino)) != NULL) {
 580                 dirp = opendirfile(dirfile);
 581                 rst_seekdir(dirp, itp->t_seekpt, itp->t_seekpt);
 582                 return (dirp);
 583         }
 584         return (NULL);
 585 }
 586
 587 /*
 588  * In our case, there is nothing to do when closing a directory.
 589  */
 590 void
 591 rst_closedir(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 OFF_T
 603 rst_telldir(RST_DIR *dirp)
 604 {
 605         return ((OFF_T)LSEEK(dirp->dd_fd,
 606                 (OFF_T)0, SEEK_CUR) - dirp->dd_size + dirp->dd_loc);
 607 }
 608
 609 /*
 610  * Open a directory file.
 611  */
 612 static RST_DIR *
 613 opendirfile(const char *name)
 614 {
 615         RST_DIR *dirp;
 616         int fd;
 617
 618         if ((fd = OPEN(name, O_RDONLY)) == -1)
 619                 return (NULL);
 620         if ((dirp = malloc(sizeof(RST_DIR))) == NULL) {
 621                 (void)close(fd);
 622                 return (NULL);
 623         }
 624         dirp->dd_fd = fd;
 625         dirp->dd_loc = 0;
 626         return (dirp);
 627 }
 628
 629 /*
 630  * Set the mode, owner, and times for all new or changed directories
 631  */
 632 void
 633 setdirmodes(int flags)
 634 {
 635         FILE *mf;
 636         struct modeinfo node;
 637         struct entry *ep;
 638         char *cp;
 639
 640         Vprintf(stdout, "Set directory mode, owner, and times.\n");
 641         if (command == 'r' || command == 'R')
 642                 (void) snprintf(modefile, sizeof(modefile), "%s/rstmode%lu", tmpdir, (long)dumpdate);
 643         if (modefile[0] == '#') {
 644                 panic("modefile not defined\n");
 645                 fprintf(stderr, "directory mode, owner, and times not set\n");
 646                 return;
 647         }
 648         mf = fopen(modefile, "r");
 649         if (mf == NULL) {
 650                 warn("fopen");
 651                 fprintf(stderr, "cannot open mode file %s\n", modefile);
 652                 fprintf(stderr, "directory mode, owner, and times not set\n");
 653                 return;
 654         }
 655         clearerr(mf);
 656         for (;;) {
 657                 (void) fread((char *)&node, 1, sizeof(struct modeinfo), mf);
 658                 if (feof(mf))
 659                         break;
 660                 ep = lookupino(node.ino);
 661                 if (command == 'i' || command == 'x') {
 662                         if (ep == NULL)
 663                                 continue;
 664                         if ((flags & FORCE) == 0 && ep->e_flags & EXISTED) {
 665                                 ep->e_flags &= ~NEW;
 666                                 continue;
 667                         }
 668                         if ((flags & FORCE) == 0 &&
 669                             node.ino == ROOTINO &&
 670                             reply("set owner/mode for '.'") == FAIL)
 671                                 continue;
 672                 }
 673                 if (ep == NULL) {
 674                         panic("cannot find directory inode %d\n", node.ino);
 675                 } else {
 676                         cp = myname(ep);
 677                         (void) chown(cp, node.uid, node.gid);
 678                         (void) chmod(cp, node.mode);
 679                         if (node.flags)
 680 #ifdef  __linux__
 681                                 (void) fsetflags(cp, node.flags);
 682 #else
 683 #ifdef sunos
 684 #else
 685                                 (void) chflags(cp, node.flags);
 686 #endif
 687 #endif
 688                         utimes(cp, node.timep);
 689                         ep->e_flags &= ~NEW;
 690                 }
 691         }
 692         if (ferror(mf))
 693                 panic("error setting directory modes\n");
 694         (void) fclose(mf);
 695 }
 696
 697 /*
 698  * Generate a literal copy of a directory.
 699  */
 700 int
 701 genliteraldir(char *name, dump_ino_t ino)
 702 {
 703         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                 warn("%s: cannot create file\n", name);
 712                 return (FAIL);
 713         }
 714         rst_seekdir(dirp, itp->t_seekpt, itp->t_seekpt);
 715         dp = dup(dirp->dd_fd);
 716         for (i = itp->t_size; i > 0; i -= BUFSIZ) {
 717                 size = i < BUFSIZ ? i : BUFSIZ;
 718                 if (read(dp, buf, (int) size) == -1) {
 719                         warnx("write error extracting inode %lu, name %s\n",
 720                                 (unsigned long)curfile.ino, curfile.name);
 721                         err(1, "read");
 722                 }
 723                 if (!Nflag && write(ofile, buf, (int) size) == -1) {
 724                         warnx("write error extracting inode %lu, name %s\n",
 725                                 (unsigned long)curfile.ino, curfile.name);
 726                         err(1, "write");
 727                 }
 728         }
 729         (void) close(dp);
 730         (void) close(ofile);
 731         return (GOOD);
 732 }
 733
 734 /*
 735  * Determine the type of an inode
 736  */
 737 int
 738 inodetype(dump_ino_t ino)
 739 {
 740         struct inotab *itp;
 741
 742         itp = inotablookup(ino);
 743         if (itp == NULL)
 744                 return (LEAF);
 745         return (NODE);
 746 }
 747
 748 /*
 749  * Allocate and initialize a directory inode entry.
 750  * If requested, save its pertinent mode, owner, and time info.
 751  */
 752 static struct inotab *
 753 #if defined(__linux__) || defined(sunos)
 754 allocinotab(dump_ino_t ino, struct new_bsd_inode *dip, OFF_T seekpt)
 755 #else
 756 allocinotab(dump_ino_t ino, struct dinode *dip, OFF_T seekpt)
 757 #endif
 758 {
 759         struct inotab   *itp;
 760         struct modeinfo node;
 761
 762         itp = calloc(1, sizeof(struct inotab));
 763         if (itp == NULL)
 764                 panic("no memory directory table\n");
 765         itp->t_next = inotab[INOHASH(ino)];
 766         inotab[INOHASH(ino)] = itp;
 767         itp->t_ino = ino;
 768         itp->t_seekpt = seekpt;
 769         if (mf == NULL)
 770                 return (itp);
 771         node.ino = ino;
 772 #if defined(__linux__) || defined(sunos)
 773         node.timep[0].tv_sec = dip->di_atime.tv_sec;
 774         node.timep[0].tv_usec = dip->di_atime.tv_usec;
 775         node.timep[1].tv_sec = dip->di_mtime.tv_sec;
 776         node.timep[1].tv_usec = dip->di_mtime.tv_usec;
 777 #else   /* __linux__  || sunos */
 778         node.timep[0].tv_sec = dip->di_atime;
 779         node.timep[0].tv_usec = dip->di_atimensec / 1000;
 780         node.timep[1].tv_sec = dip->di_mtime;
 781         node.timep[1].tv_usec = dip->di_mtimensec / 1000;
 782 #endif  /* __linux__  || sunos */
 783         node.mode = dip->di_mode;
 784         node.flags = dip->di_flags;
 785         node.uid = dip->di_uid;
 786         node.gid = dip->di_gid;
 787         if ( fwrite((char *)&node, 1, sizeof(struct modeinfo), mf) != sizeof(struct modeinfo) )
 788                 err(1,"cannot write to file %s", modefile);
 789         return (itp);
 790 }
 791
 792 /*
 793  * Look up an inode in the table of directories
 794  */
 795 static struct inotab *
 796 inotablookup(dump_ino_t ino)
 797 {
 798         struct inotab *itp;
 799
 800         for (itp = inotab[INOHASH(ino)]; itp != NULL; itp = itp->t_next)
 801                 if (itp->t_ino == ino)
 802                         return (itp);
 803         return (NULL);
 804 }
 805
 806 /*
 807  * Clean up and exit
 808  */
 809 void
 810 cleanup(void)
 811 {
 812         closemt();
 813         if (modefile[0] != '#')
 814                 (void) unlink(modefile);
 815         if (dirfile[0] != '#')
 816                 (void) unlink(dirfile);
 817 }