dirs.c revision 179255
1/* 2 * Copyright (c) 1983, 1993 3 * The Regents of the University of California. All rights reserved. 4 * (c) UNIX System Laboratories, Inc. 5 * All or some portions of this file are derived from material licensed 6 * to the University of California by American Telephone and Telegraph 7 * Co. or Unix System Laboratories, Inc. and are reproduced herein with 8 * the permission of UNIX System Laboratories, Inc. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 4. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35#ifndef lint 36#if 0 37static char sccsid[] = "@(#)dirs.c 8.7 (Berkeley) 5/1/95"; 38#endif 39static const char rcsid[] = 40 "$FreeBSD: head/sbin/restore/dirs.c 179255 2008-05-23 19:17:08Z mckusick $"; 41#endif /* not lint */ 42 43#include <sys/param.h> 44#include <sys/file.h> 45#include <sys/stat.h> 46#include <sys/time.h> 47 48#include <ufs/ufs/dinode.h> 49#include <ufs/ufs/dir.h> 50#include <protocols/dumprestore.h> 51 52#include <err.h> 53#include <errno.h> 54#include <limits.h> 55#include <paths.h> 56#include <stdio.h> 57#include <stdlib.h> 58#include <string.h> 59#include <unistd.h> 60 61#include "restore.h" 62#include "extern.h" 63 64/* 65 * Symbol table of directories read from tape. 66 */ 67#define HASHSIZE 1000 68#define INOHASH(val) (val % HASHSIZE) 69struct inotab { 70 struct inotab *t_next; 71 ino_t t_ino; 72 int32_t t_seekpt; 73 int32_t t_size; 74}; 75static struct inotab *inotab[HASHSIZE]; 76 77/* 78 * Information retained about directories. 79 */ 80struct modeinfo { 81 ino_t ino; 82 struct timeval ctimep[2]; 83 struct timeval mtimep[2]; 84 mode_t mode; 85 uid_t uid; 86 gid_t gid; 87 int flags; 88 int extsize; 89}; 90 91/* 92 * Definitions for library routines operating on directories. 93 */ 94#undef DIRBLKSIZ 95#define DIRBLKSIZ 1024 96struct rstdirdesc { 97 int dd_fd; 98 int32_t dd_loc; 99 int32_t dd_size; 100 char dd_buf[DIRBLKSIZ]; 101}; 102 103/* 104 * Global variables for this file. 105 */ 106static long seekpt; 107static FILE *df, *mf; 108static RST_DIR *dirp; 109static char dirfile[MAXPATHLEN] = "#"; /* No file */ 110static char modefile[MAXPATHLEN] = "#"; /* No file */ 111static char dot[2] = "."; /* So it can be modified */ 112 113static struct inotab *allocinotab(struct context *, long); 114static void flushent(void); 115static struct inotab *inotablookup(ino_t); 116static RST_DIR *opendirfile(const char *); 117static void putdir(char *, long); 118static void putdirattrs(char *, long); 119static void putent(struct direct *); 120static void rst_seekdir(RST_DIR *, long, long); 121static long rst_telldir(RST_DIR *); 122static struct direct *searchdir(ino_t, char *); 123static void fail_dirtmp(char *); 124 125/* 126 * Extract directory contents, building up a directory structure 127 * on disk for extraction by name. 128 * If genmode is requested, save mode, owner, and times for all 129 * directories on the tape. 130 */ 131void 132extractdirs(int genmode) 133{ 134 struct inotab *itp; 135 struct direct nulldir; 136 int i, fd; 137 const char *tmpdir; 138 139 vprintf(stdout, "Extract directories from tape\n"); 140 if ((tmpdir = getenv("TMPDIR")) == NULL || tmpdir[0] == '\0') 141 tmpdir = _PATH_TMP; 142 (void) sprintf(dirfile, "%s/rstdir%ld", tmpdir, dumpdate); 143 if (command != 'r' && command != 'R') { 144 (void *) strcat(dirfile, "-XXXXXX"); 145 fd = mkstemp(dirfile); 146 } else 147 fd = open(dirfile, O_RDWR|O_CREAT|O_EXCL, 0666); 148 if (fd == -1 || (df = fdopen(fd, "w")) == NULL) { 149 if (fd != -1) 150 close(fd); 151 warn("%s: cannot create directory database", dirfile); 152 done(1); 153 } 154 if (genmode != 0) { 155 (void) sprintf(modefile, "%s/rstmode%ld", tmpdir, dumpdate); 156 if (command != 'r' && command != 'R') { 157 (void *) strcat(modefile, "-XXXXXX"); 158 fd = mkstemp(modefile); 159 } else 160 fd = open(modefile, O_RDWR|O_CREAT|O_EXCL, 0666); 161 if (fd == -1 || (mf = fdopen(fd, "w")) == NULL) { 162 if (fd != -1) 163 close(fd); 164 warn("%s: cannot create modefile", modefile); 165 done(1); 166 } 167 } 168 nulldir.d_ino = 0; 169 nulldir.d_type = DT_DIR; 170 nulldir.d_namlen = 1; 171 (void) strcpy(nulldir.d_name, "/"); 172 nulldir.d_reclen = DIRSIZ(0, &nulldir); 173 for (;;) { 174 curfile.name = "<directory file - name unknown>"; 175 curfile.action = USING; 176 if (curfile.mode == 0 || (curfile.mode & IFMT) != IFDIR) 177 break; 178 itp = allocinotab(&curfile, seekpt); 179 getfile(putdir, putdirattrs, xtrnull); 180 putent(&nulldir); 181 flushent(); 182 itp->t_size = seekpt - itp->t_seekpt; 183 } 184 if (fclose(df) != 0) 185 fail_dirtmp(dirfile); 186 dirp = opendirfile(dirfile); 187 if (dirp == NULL) 188 fprintf(stderr, "opendirfile: %s\n", strerror(errno)); 189 if (mf != NULL && fclose(mf) != 0) 190 fail_dirtmp(modefile); 191 i = dirlookup(dot); 192 if (i == 0) 193 panic("Root directory is not on tape\n"); 194} 195 196/* 197 * skip over all the directories on the tape 198 */ 199void 200skipdirs(void) 201{ 202 203 while (curfile.ino && (curfile.mode & IFMT) == IFDIR) { 204 skipfile(); 205 } 206} 207 208/* 209 * Recursively find names and inumbers of all files in subtree 210 * pname and pass them off to be processed. 211 */ 212void 213treescan(char *pname, ino_t ino, long (*todo)(char *, ino_t, int)) 214{ 215 struct inotab *itp; 216 struct direct *dp; 217 int namelen; 218 long bpt; 219 char locname[MAXPATHLEN]; 220 221 itp = inotablookup(ino); 222 if (itp == NULL) { 223 /* 224 * Pname is name of a simple file or an unchanged directory. 225 */ 226 (void) (*todo)(pname, ino, LEAF); 227 return; 228 } 229 /* 230 * Pname is a dumped directory name. 231 */ 232 if ((*todo)(pname, ino, NODE) == FAIL) 233 return; 234 /* 235 * begin search through the directory 236 * skipping over "." and ".." 237 */ 238 (void) strlcpy(locname, pname, sizeof(locname)); 239 (void) strlcat(locname, "/", sizeof(locname)); 240 namelen = strlen(locname); 241 rst_seekdir(dirp, itp->t_seekpt, itp->t_seekpt); 242 dp = rst_readdir(dirp); /* "." */ 243 if (dp != NULL && strcmp(dp->d_name, ".") == 0) 244 dp = rst_readdir(dirp); /* ".." */ 245 else 246 fprintf(stderr, "Warning: `.' missing from directory %s\n", 247 pname); 248 if (dp != NULL && strcmp(dp->d_name, "..") == 0) 249 dp = rst_readdir(dirp); /* first real entry */ 250 else 251 fprintf(stderr, "Warning: `..' missing from directory %s\n", 252 pname); 253 bpt = rst_telldir(dirp); 254 /* 255 * a zero inode signals end of directory 256 */ 257 while (dp != NULL) { 258 locname[namelen] = '\0'; 259 if (namelen + dp->d_namlen >= sizeof(locname)) { 260 fprintf(stderr, "%s%s: name exceeds %d char\n", 261 locname, dp->d_name, sizeof(locname) - 1); 262 } else { 263 (void)strlcat(locname, dp->d_name, sizeof(locname)); 264 treescan(locname, dp->d_ino, todo); 265 rst_seekdir(dirp, bpt, itp->t_seekpt); 266 } 267 dp = rst_readdir(dirp); 268 bpt = rst_telldir(dirp); 269 } 270} 271 272/* 273 * Lookup a pathname which is always assumed to start from the ROOTINO. 274 */ 275struct direct * 276pathsearch(const char *pathname) 277{ 278 ino_t ino; 279 struct direct *dp; 280 char *path, *name, buffer[MAXPATHLEN]; 281 282 strcpy(buffer, pathname); 283 path = buffer; 284 ino = ROOTINO; 285 while (*path == '/') 286 path++; 287 dp = NULL; 288 while ((name = strsep(&path, "/")) != NULL && *name != '\0') { 289 if ((dp = searchdir(ino, name)) == NULL) 290 return (NULL); 291 ino = dp->d_ino; 292 } 293 return (dp); 294} 295 296/* 297 * Lookup the requested name in directory inum. 298 * Return its inode number if found, zero if it does not exist. 299 */ 300static struct direct * 301searchdir(ino_t inum, char *name) 302{ 303 struct direct *dp; 304 struct inotab *itp; 305 int len; 306 307 itp = inotablookup(inum); 308 if (itp == NULL) 309 return (NULL); 310 rst_seekdir(dirp, itp->t_seekpt, itp->t_seekpt); 311 len = strlen(name); 312 do { 313 dp = rst_readdir(dirp); 314 if (dp == NULL) 315 return (NULL); 316 } while (dp->d_namlen != len || strncmp(dp->d_name, name, len) != 0); 317 return (dp); 318} 319 320/* 321 * Put the directory entries in the directory file 322 */ 323static void 324putdir(char *buf, long size) 325{ 326 struct direct *dp; 327 long loc, i; 328 329 for (loc = 0; loc < size; ) { 330 dp = (struct direct *)(buf + loc); 331 if (Bcvt) 332 swabst((u_char *)"ls", (u_char *) dp); 333 if (oldinofmt && dp->d_ino != 0) { 334#if BYTE_ORDER == BIG_ENDIAN 335 if (Bcvt) 336 dp->d_namlen = dp->d_type; 337#else 338 if (!Bcvt && dp->d_namlen == 0) 339 dp->d_namlen = dp->d_type; 340#endif 341 dp->d_type = DT_UNKNOWN; 342 } 343 i = DIRBLKSIZ - (loc & (DIRBLKSIZ - 1)); 344 if ((dp->d_reclen & 0x3) != 0 || 345 dp->d_reclen > i || 346 dp->d_reclen < DIRSIZ(0, dp) 347#if NAME_MAX < 255 348 || dp->d_namlen > NAME_MAX 349#endif 350 ) { 351 vprintf(stdout, "Mangled directory: "); 352 if ((dp->d_reclen & 0x3) != 0) 353 vprintf(stdout, 354 "reclen not multiple of 4 "); 355 if (dp->d_reclen < DIRSIZ(0, dp)) 356 vprintf(stdout, 357 "reclen less than DIRSIZ (%d < %d) ", 358 dp->d_reclen, DIRSIZ(0, dp)); 359#if NAME_MAX < 255 360 if (dp->d_namlen > NAME_MAX) 361 vprintf(stdout, 362 "reclen name too big (%d > %d) ", 363 dp->d_namlen, NAME_MAX); 364#endif 365 vprintf(stdout, "\n"); 366 loc += i; 367 continue; 368 } 369 loc += dp->d_reclen; 370 if (dp->d_ino != 0) { 371 putent(dp); 372 } 373 } 374} 375 376/* 377 * These variables are "local" to the following two functions. 378 */ 379char dirbuf[DIRBLKSIZ]; 380long dirloc = 0; 381long prev = 0; 382 383/* 384 * add a new directory entry to a file. 385 */ 386static void 387putent(struct direct *dp) 388{ 389 dp->d_reclen = DIRSIZ(0, dp); 390 if (dirloc + dp->d_reclen > DIRBLKSIZ) { 391 ((struct direct *)(dirbuf + prev))->d_reclen = 392 DIRBLKSIZ - prev; 393 if (fwrite(dirbuf, DIRBLKSIZ, 1, df) != 1) 394 fail_dirtmp(dirfile); 395 dirloc = 0; 396 } 397 memmove(dirbuf + dirloc, dp, (long)dp->d_reclen); 398 prev = dirloc; 399 dirloc += dp->d_reclen; 400} 401 402/* 403 * flush out a directory that is finished. 404 */ 405static void 406flushent(void) 407{ 408 ((struct direct *)(dirbuf + prev))->d_reclen = DIRBLKSIZ - prev; 409 if (fwrite(dirbuf, (int)dirloc, 1, df) != 1) 410 fail_dirtmp(dirfile); 411 seekpt = ftell(df); 412 dirloc = 0; 413} 414 415/* 416 * Save extended attributes for a directory entry to a file. 417 */ 418static void 419putdirattrs(char *buf, long size) 420{ 421 422 if (mf != NULL && fwrite(buf, size, 1, mf) != 1) 423 fail_dirtmp(modefile); 424} 425 426/* 427 * Seek to an entry in a directory. 428 * Only values returned by rst_telldir should be passed to rst_seekdir. 429 * This routine handles many directories in a single file. 430 * It takes the base of the directory in the file, plus 431 * the desired seek offset into it. 432 */ 433static void 434rst_seekdir(RST_DIR *dirp, long loc, long base) 435{ 436 437 if (loc == rst_telldir(dirp)) 438 return; 439 loc -= base; 440 if (loc < 0) 441 fprintf(stderr, "bad seek pointer to rst_seekdir %ld\n", loc); 442 (void) lseek(dirp->dd_fd, base + (loc & ~(DIRBLKSIZ - 1)), SEEK_SET); 443 dirp->dd_loc = loc & (DIRBLKSIZ - 1); 444 if (dirp->dd_loc != 0) 445 dirp->dd_size = read(dirp->dd_fd, dirp->dd_buf, DIRBLKSIZ); 446} 447 448/* 449 * get next entry in a directory. 450 */ 451struct direct * 452rst_readdir(RST_DIR *dirp) 453{ 454 struct direct *dp; 455 456 for (;;) { 457 if (dirp->dd_loc == 0) { 458 dirp->dd_size = read(dirp->dd_fd, dirp->dd_buf, 459 DIRBLKSIZ); 460 if (dirp->dd_size <= 0) { 461 dprintf(stderr, "error reading directory\n"); 462 return (NULL); 463 } 464 } 465 if (dirp->dd_loc >= dirp->dd_size) { 466 dirp->dd_loc = 0; 467 continue; 468 } 469 dp = (struct direct *)(dirp->dd_buf + dirp->dd_loc); 470 if (dp->d_reclen == 0 || 471 dp->d_reclen > DIRBLKSIZ + 1 - dirp->dd_loc) { 472 dprintf(stderr, "corrupted directory: bad reclen %d\n", 473 dp->d_reclen); 474 return (NULL); 475 } 476 dirp->dd_loc += dp->d_reclen; 477 if (dp->d_ino == 0 && strcmp(dp->d_name, "/") == 0) 478 return (NULL); 479 if (dp->d_ino >= maxino) { 480 dprintf(stderr, "corrupted directory: bad inum %d\n", 481 dp->d_ino); 482 continue; 483 } 484 return (dp); 485 } 486} 487 488/* 489 * Simulate the opening of a directory 490 */ 491void * 492rst_opendir(const char *name) 493{ 494 struct inotab *itp; 495 RST_DIR *dirp; 496 ino_t ino; 497 498 if ((ino = dirlookup(name)) > 0 && 499 (itp = inotablookup(ino)) != NULL) { 500 dirp = opendirfile(dirfile); 501 rst_seekdir(dirp, itp->t_seekpt, itp->t_seekpt); 502 return (dirp); 503 } 504 return (NULL); 505} 506 507/* 508 * In our case, there is nothing to do when closing a directory. 509 */ 510void 511rst_closedir(void *arg) 512{ 513 RST_DIR *dirp; 514 515 dirp = arg; 516 (void)close(dirp->dd_fd); 517 free(dirp); 518 return; 519} 520 521/* 522 * Simulate finding the current offset in the directory. 523 */ 524static long 525rst_telldir(RST_DIR *dirp) 526{ 527 return ((long)lseek(dirp->dd_fd, 528 (off_t)0, SEEK_CUR) - dirp->dd_size + dirp->dd_loc); 529} 530 531/* 532 * Open a directory file. 533 */ 534static RST_DIR * 535opendirfile(const char *name) 536{ 537 RST_DIR *dirp; 538 int fd; 539 540 if ((fd = open(name, O_RDONLY)) == -1) 541 return (NULL); 542 if ((dirp = malloc(sizeof(RST_DIR))) == NULL) { 543 (void)close(fd); 544 return (NULL); 545 } 546 dirp->dd_fd = fd; 547 dirp->dd_loc = 0; 548 return (dirp); 549} 550 551/* 552 * Set the mode, owner, and times for all new or changed directories 553 */ 554void 555setdirmodes(int flags) 556{ 557 FILE *mf; 558 struct modeinfo node; 559 struct entry *ep; 560 char *cp, *buf; 561 const char *tmpdir; 562 int bufsize; 563 uid_t myuid; 564 565 vprintf(stdout, "Set directory mode, owner, and times.\n"); 566 if ((tmpdir = getenv("TMPDIR")) == NULL || tmpdir[0] == '\0') 567 tmpdir = _PATH_TMP; 568 if (command == 'r' || command == 'R') 569 (void) sprintf(modefile, "%s/rstmode%ld", tmpdir, dumpdate); 570 if (modefile[0] == '#') { 571 panic("modefile not defined\n"); 572 fprintf(stderr, "directory mode, owner, and times not set\n"); 573 return; 574 } 575 mf = fopen(modefile, "r"); 576 if (mf == NULL) { 577 fprintf(stderr, "fopen: %s\n", strerror(errno)); 578 fprintf(stderr, "cannot open mode file %s\n", modefile); 579 fprintf(stderr, "directory mode, owner, and times not set\n"); 580 return; 581 } 582 clearerr(mf); 583 bufsize = 0; 584 myuid = getuid(); 585 for (;;) { 586 (void) fread((char *)&node, 1, sizeof(struct modeinfo), mf); 587 if (ferror(mf)) { 588 warn("%s: cannot read modefile.", modefile); 589 fprintf(stderr, "Mode, owner, and times not set.\n"); 590 break; 591 } 592 if (feof(mf)) 593 break; 594 if (node.extsize > 0) { 595 if (bufsize < node.extsize) { 596 if (bufsize > 0) 597 free(buf); 598 if ((buf = malloc(node.extsize)) != 0) { 599 bufsize = node.extsize; 600 } else { 601 bufsize = 0; 602 } 603 } 604 if (bufsize >= node.extsize) { 605 (void) fread(buf, 1, node.extsize, mf); 606 if (ferror(mf)) { 607 warn("%s: cannot read modefile.", 608 modefile); 609 fprintf(stderr, "Not all external "); 610 fprintf(stderr, "attributes set.\n"); 611 break; 612 } 613 } else { 614 (void) fseek(mf, node.extsize, SEEK_CUR); 615 if (ferror(mf)) { 616 warn("%s: cannot seek in modefile.", 617 modefile); 618 fprintf(stderr, "Not all directory "); 619 fprintf(stderr, "attributes set.\n"); 620 break; 621 } 622 } 623 } 624 ep = lookupino(node.ino); 625 if (command == 'i' || command == 'x') { 626 if (ep == NULL) 627 continue; 628 if ((flags & FORCE) == 0 && ep->e_flags & EXISTED) { 629 ep->e_flags &= ~NEW; 630 continue; 631 } 632 if (node.ino == ROOTINO && 633 reply("set owner/mode for '.'") == FAIL) 634 continue; 635 } 636 if (ep == NULL) { 637 panic("cannot find directory inode %d\n", node.ino); 638 continue; 639 } 640 cp = myname(ep); 641 if (!Nflag) { 642 if (node.extsize > 0) { 643 if (bufsize >= node.extsize) { 644 set_extattr_file(cp, buf, node.extsize); 645 } else { 646 fprintf(stderr, "Cannot restore %s%s\n", 647 "extended attributes for ", cp); 648 } 649 } 650 if (myuid != 0) 651 (void) chown(cp, myuid, node.gid); 652 else 653 (void) chown(cp, node.uid, node.gid); 654 (void) chmod(cp, node.mode); 655 utimes(cp, node.ctimep); 656 utimes(cp, node.mtimep); 657 (void) chflags(cp, node.flags); 658 } 659 ep->e_flags &= ~NEW; 660 } 661 if (bufsize > 0) 662 free(buf); 663 (void) fclose(mf); 664} 665 666/* 667 * Generate a literal copy of a directory. 668 */ 669int 670genliteraldir(char *name, ino_t ino) 671{ 672 struct inotab *itp; 673 int ofile, dp, i, size; 674 char buf[BUFSIZ]; 675 676 itp = inotablookup(ino); 677 if (itp == NULL) 678 panic("Cannot find directory inode %d named %s\n", ino, name); 679 if ((ofile = open(name, O_WRONLY | O_CREAT | O_TRUNC, 0666)) < 0) { 680 fprintf(stderr, "%s: ", name); 681 (void) fflush(stderr); 682 fprintf(stderr, "cannot create file: %s\n", strerror(errno)); 683 return (FAIL); 684 } 685 rst_seekdir(dirp, itp->t_seekpt, itp->t_seekpt); 686 dp = dup(dirp->dd_fd); 687 for (i = itp->t_size; i > 0; i -= BUFSIZ) { 688 size = i < BUFSIZ ? i : BUFSIZ; 689 if (read(dp, buf, (int) size) == -1) { 690 fprintf(stderr, 691 "write error extracting inode %d, name %s\n", 692 curfile.ino, curfile.name); 693 fprintf(stderr, "read: %s\n", strerror(errno)); 694 done(1); 695 } 696 if (!Nflag && write(ofile, buf, (int) size) == -1) { 697 fprintf(stderr, 698 "write error extracting inode %d, name %s\n", 699 curfile.ino, curfile.name); 700 fprintf(stderr, "write: %s\n", strerror(errno)); 701 done(1); 702 } 703 } 704 (void) close(dp); 705 (void) close(ofile); 706 return (GOOD); 707} 708 709/* 710 * Determine the type of an inode 711 */ 712int 713inodetype(ino_t ino) 714{ 715 struct inotab *itp; 716 717 itp = inotablookup(ino); 718 if (itp == NULL) 719 return (LEAF); 720 return (NODE); 721} 722 723/* 724 * Allocate and initialize a directory inode entry. 725 * If requested, save its pertinent mode, owner, and time info. 726 */ 727static struct inotab * 728allocinotab(struct context *ctxp, long seekpt) 729{ 730 struct inotab *itp; 731 struct modeinfo node; 732 733 itp = calloc(1, sizeof(struct inotab)); 734 if (itp == NULL) 735 panic("no memory for directory table\n"); 736 itp->t_next = inotab[INOHASH(ctxp->ino)]; 737 inotab[INOHASH(ctxp->ino)] = itp; 738 itp->t_ino = ctxp->ino; 739 itp->t_seekpt = seekpt; 740 if (mf == NULL) 741 return (itp); 742 node.ino = ctxp->ino; 743 node.mtimep[0].tv_sec = ctxp->atime_sec; 744 node.mtimep[0].tv_usec = ctxp->atime_nsec / 1000; 745 node.mtimep[1].tv_sec = ctxp->mtime_sec; 746 node.mtimep[1].tv_usec = ctxp->mtime_nsec / 1000; 747 node.ctimep[0].tv_sec = ctxp->atime_sec; 748 node.ctimep[0].tv_usec = ctxp->atime_nsec / 1000; 749 node.ctimep[1].tv_sec = ctxp->birthtime_sec; 750 node.ctimep[1].tv_usec = ctxp->birthtime_nsec / 1000; 751 node.extsize = ctxp->extsize; 752 node.mode = ctxp->mode; 753 node.flags = ctxp->file_flags; 754 node.uid = ctxp->uid; 755 node.gid = ctxp->gid; 756 if (fwrite((char *)&node, sizeof(struct modeinfo), 1, mf) != 1) 757 fail_dirtmp(modefile); 758 return (itp); 759} 760 761/* 762 * Look up an inode in the table of directories 763 */ 764static struct inotab * 765inotablookup(ino_t ino) 766{ 767 struct inotab *itp; 768 769 for (itp = inotab[INOHASH(ino)]; itp != NULL; itp = itp->t_next) 770 if (itp->t_ino == ino) 771 return (itp); 772 return (NULL); 773} 774 775/* 776 * Clean up and exit 777 */ 778void 779done(int exitcode) 780{ 781 782 closemt(); 783 if (modefile[0] != '#') { 784 (void) truncate(modefile, 0); 785 (void) unlink(modefile); 786 } 787 if (dirfile[0] != '#') { 788 (void) truncate(dirfile, 0); 789 (void) unlink(dirfile); 790 } 791 exit(exitcode); 792} 793 794/* 795 * Print out information about the failure to save directory, 796 * extended attribute, and mode information. 797 */ 798static void 799fail_dirtmp(char *filename) 800{ 801 const char *tmpdir; 802 803 warn("%s: cannot write directory database", filename); 804 if (errno == ENOSPC) { 805 if ((tmpdir = getenv("TMPDIR")) == NULL || tmpdir[0] == '\0') 806 tmpdir = _PATH_TMP; 807 fprintf(stderr, "Try making space in %s, %s\n%s\n", tmpdir, 808 "or set environment variable TMPDIR", 809 "to an alternate location with more disk space."); 810 } 811 done(1); 812} 813