sbin/fsdb/fsdb.c

   1 /*      $NetBSD: fsdb.c,v 1.2 1995/10/08 23:18:10 thorpej Exp $ */
   2
   3 /*
   4  *  Copyright (c) 1995 John T. Kohl
   5  *  All rights reserved.
   6  *
   7  *  Redistribution and use in source and binary forms, with or without
   8  *  modification, are permitted provided that the following conditions
   9  *  are met:
  10  *  1. Redistributions of source code must retain the above copyright
  11  *     notice, this list of conditions and the following disclaimer.
  12  *  2. Redistributions in binary form must reproduce the above copyright
  13  *     notice, this list of conditions and the following disclaimer in the
  14  *     documentation and/or other materials provided with the distribution.
  15  *  3. The name of the author may not be used to endorse or promote products
  16  *     derived from this software without specific prior written permission.
  17  *
  18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR `AS IS'' AND ANY EXPRESS OR
  19  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  20  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  21  * DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
  22  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  23  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  24  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  25  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  26  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
  27  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  28  * POSSIBILITY OF SUCH DAMAGE.
  29  *
  30  * $FreeBSD: src/sbin/fsdb/fsdb.c,v 1.13.2.3 2002/03/20 13:39:02 joerg Exp $
  31  * $DragonFly: src/sbin/fsdb/fsdb.c,v 1.9 2006/04/03 01:58:49 dillon Exp $
  32  */
  33
  34 #include <sys/param.h>
  35 #include <sys/time.h>
  36 #include <ctype.h>
  37 #include <err.h>
  38 #include <grp.h>
  39 #include <histedit.h>
  40 #include <pwd.h>
  41 #include <string.h>
  42
  43 #include <vfs/ufs/dinode.h>
  44 #include <vfs/ufs/dir.h>
  45 #include <vfs/ufs/fs.h>
  46
  47 #include "fsdb.h"
  48 #include "fsck.h"
  49
  50 static void usage(void);
  51 int cmdloop(void);
  52
  53 static void
  54 usage(void)
  55 {
  56         fprintf(stderr, "usage: fsdb [-d] [-f] [-r] fsname\n");
  57         exit(1);
  58 }
  59
  60 int returntosingle = 0;
  61 char nflag = 0;
  62
  63 /*
  64  * We suck in lots of fsck code, and just pick & choose the stuff we want.
  65  *
  66  * fsreadfd is set up to read from the file system, fswritefd to write to
  67  * the file system.
  68  */
  69 int
  70 main(int argc, char **argv)
  71 {
  72         int ch, rval;
  73         char *fsys = NULL;
  74
  75         while (-1 != (ch = getopt(argc, argv, "fdr"))) {
  76                 switch (ch) {
  77                 case 'f':
  78                         /* The -f option is left for historical
  79                          * reasons and has no meaning.
  80                          */
  81                         break;
  82                 case 'd':
  83                         debug++;
  84                         break;
  85                 case 'r':
  86                         nflag++; /* "no" in fsck, readonly for us */
  87                         break;
  88                 default:
  89                         usage();
  90                 }
  91         }
  92         argc -= optind;
  93         argv += optind;
  94         if (argc != 1)
  95                 usage();
  96         else
  97                 fsys = argv[0];
  98
  99         if (!setup(fsys))
 100                 errx(1, "cannot set up file system `%s'", fsys);
 101         printf("%s file system `%s'\nLast Mounted on %s\n",
 102                nflag? "Examining": "Editing", fsys, sblock.fs_fsmnt);
 103         rval = cmdloop();
 104         if (!nflag) {
 105                 sblock.fs_clean = 0;    /* mark it dirty */
 106                 sbdirty();
 107                 ckfini(0);
 108                 printf("*** FILE SYSTEM MARKED DIRTY\n");
 109                 printf("*** BE SURE TO RUN FSCK TO CLEAN UP ANY DAMAGE\n");
 110                 printf("*** IF IT WAS MOUNTED, RE-MOUNT WITH -u -o reload\n");
 111         }
 112         exit(rval);
 113 }
 114
 115 #define CMDFUNC(func) int func (int argc, char **argv)
 116 #define CMDFUNCSTART(func) int func(int argc, char **argv)
 117
 118 CMDFUNC(helpfn);
 119 CMDFUNC(focus);                         /* focus on inode */
 120 CMDFUNC(active);                        /* print active inode */
 121 CMDFUNC(blocks);                        /* print blocks for active inode */
 122 CMDFUNC(focusname);                     /* focus by name */
 123 CMDFUNC(zapi);                          /* clear inode */
 124 CMDFUNC(uplink);                        /* incr link */
 125 CMDFUNC(downlink);                      /* decr link */
 126 CMDFUNC(linkcount);                     /* set link count */
 127 CMDFUNC(quit);                          /* quit */
 128 CMDFUNC(ls);                            /* list directory */
 129 CMDFUNC(rm);                            /* remove name */
 130 CMDFUNC(ln);                            /* add name */
 131 CMDFUNC(newtype);                       /* change type */
 132 CMDFUNC(chmode);                        /* change mode */
 133 CMDFUNC(chlen);                         /* change length */
 134 CMDFUNC(chaflags);                      /* change flags */
 135 CMDFUNC(chgen);                         /* change generation */
 136 CMDFUNC(chowner);                       /* change owner */
 137 CMDFUNC(chgroup);                       /* Change group */
 138 CMDFUNC(back);                          /* pop back to last ino */
 139 CMDFUNC(chmtime);                       /* Change mtime */
 140 CMDFUNC(chctime);                       /* Change ctime */
 141 CMDFUNC(chatime);                       /* Change atime */
 142 CMDFUNC(chinum);                        /* Change inode # of dirent */
 143 CMDFUNC(chname);                        /* Change dirname of dirent */
 144
 145 struct cmdtable cmds[] = {
 146         { "help", "Print out help", 1, 1, FL_RO, helpfn },
 147         { "?", "Print out help", 1, 1, FL_RO, helpfn },
 148         { "inode", "Set active inode to INUM", 2, 2, FL_RO, focus },
 149         { "clri", "Clear inode INUM", 2, 2, FL_WR, zapi },
 150         { "lookup", "Set active inode by looking up NAME", 2, 2, FL_RO, focusname },
 151         { "cd", "Set active inode by looking up NAME", 2, 2, FL_RO, focusname },
 152         { "back", "Go to previous active inode", 1, 1, FL_RO, back },
 153         { "active", "Print active inode", 1, 1, FL_RO, active },
 154         { "print", "Print active inode", 1, 1, FL_RO, active },
 155         { "blocks", "Print block numbers of active inode", 1, 1, FL_RO, blocks },
 156         { "uplink", "Increment link count", 1, 1, FL_WR, uplink },
 157         { "downlink", "Decrement link count", 1, 1, FL_WR, downlink },
 158         { "linkcount", "Set link count to COUNT", 2, 2, FL_WR, linkcount },
 159         { "ls", "List current inode as directory", 1, 1, FL_RO, ls },
 160         { "rm", "Remove NAME from current inode directory", 2, 2, FL_WR, rm },
 161         { "del", "Remove NAME from current inode directory", 2, 2, FL_WR, rm },
 162         { "ln", "Hardlink INO into current inode directory as NAME", 3, 3, FL_WR, ln },
 163         { "chinum", "Change dir entry number INDEX to INUM", 3, 3, FL_WR, chinum },
 164         { "chname", "Change dir entry number INDEX to NAME", 3, 3, FL_WR, chname },
 165         { "chtype", "Change type of current inode to TYPE", 2, 2, FL_WR, newtype },
 166         { "chmod", "Change mode of current inode to MODE", 2, 2, FL_WR, chmode },
 167         { "chlen", "Change length of current inode to LENGTH", 2, 2, FL_WR, chlen },
 168         { "chown", "Change owner of current inode to OWNER", 2, 2, FL_WR, chowner },
 169         { "chgrp", "Change group of current inode to GROUP", 2, 2, FL_WR, chgroup },
 170         { "chflags", "Change flags of current inode to FLAGS", 2, 2, FL_WR, chaflags },
 171         { "chgen", "Change generation number of current inode to GEN", 2, 2, FL_WR, chgen },
 172         { "mtime", "Change mtime of current inode to MTIME", 2, 2, FL_WR, chmtime },
 173         { "ctime", "Change ctime of current inode to CTIME", 2, 2, FL_WR, chctime },
 174         { "atime", "Change atime of current inode to ATIME", 2, 2, FL_WR, chatime },
 175         { "quit", "Exit", 1, 1, FL_RO, quit },
 176         { "q", "Exit", 1, 1, FL_RO, quit },
 177         { "exit", "Exit", 1, 1, FL_RO, quit },
 178         { NULL, 0, 0, 0 },
 179 };
 180
 181 int
 182 helpfn(int argc, char **argv)
 183 {
 184     struct cmdtable *cmdtp;
 185
 186     printf("Commands are:\n%-10s %5s %5s   %s\n",
 187            "command", "min argc", "max argc", "what");
 188
 189     for (cmdtp = cmds; cmdtp->cmd; cmdtp++)
 190         printf("%-10s %5u %5u   %s\n",
 191                cmdtp->cmd, cmdtp->minargc, cmdtp->maxargc, cmdtp->helptxt);
 192     return 0;
 193 }
 194
 195 char *
 196 prompt(EditLine *el)
 197 {
 198     static char pstring[64];
 199     snprintf(pstring, sizeof(pstring), "fsdb (inum: %d)> ", curinum);
 200     return pstring;
 201 }
 202
 203
 204 int
 205 cmdloop(void)
 206 {
 207     char *line;
 208     const char *elline;
 209     int cmd_argc, rval = 0, known;
 210 #define scratch known
 211     char **cmd_argv;
 212     struct cmdtable *cmdp;
 213     History *hist;
 214     HistEvent he;
 215     EditLine *elptr;
 216
 217     curinode = ginode(ROOTINO);
 218     curinum = ROOTINO;
 219     printactive(0);
 220
 221     hist = history_init();
 222     history(hist, &he, H_SETSIZE, 100); /* 100 elt history buffer */
 223
 224     elptr = el_init("fsdb", stdin, stdout, stderr);
 225     el_set(elptr, EL_EDITOR, "emacs");
 226     el_set(elptr, EL_PROMPT, prompt);
 227     el_set(elptr, EL_HIST, history, hist);
 228     el_source(elptr, NULL);
 229
 230     while ((elline = el_gets(elptr, &scratch)) != NULL && scratch != 0) {
 231         if (debug)
 232             printf("command `%s'\n", elline);
 233
 234         history(hist, &he, H_ENTER, elline);
 235
 236         line = strdup(elline);
 237         cmd_argv = crack(line, &cmd_argc);
 238         /*
 239          * el_parse returns -1 to signal that it's not been handled
 240          * internally.
 241          */
 242         if (el_parse(elptr, cmd_argc, (const char **)cmd_argv) != -1)
 243             continue;
 244         if (cmd_argc) {
 245             known = 0;
 246             for (cmdp = cmds; cmdp->cmd; cmdp++) {
 247                 if (!strcmp(cmdp->cmd, cmd_argv[0])) {
 248                     if ((cmdp->flags & FL_WR) == FL_WR && nflag)
 249                         warnx("`%s' requires write access", cmd_argv[0]),
 250                             rval = 1;
 251                     else if (cmd_argc >= cmdp->minargc &&
 252                         cmd_argc <= cmdp->maxargc)
 253                         rval = (*cmdp->handler)(cmd_argc, cmd_argv);
 254                     else
 255                         rval = argcount(cmdp, cmd_argc, cmd_argv);
 256                     known = 1;
 257                     break;
 258                 }
 259             }
 260             if (!known)
 261                 warnx("unknown command `%s'", cmd_argv[0]), rval = 1;
 262         } else
 263             rval = 0;
 264         free(line);
 265         if (rval < 0)
 266             return rval;
 267         if (rval)
 268             warnx("rval was %d", rval);
 269     }
 270     el_end(elptr);
 271     history_end(hist);
 272     return rval;
 273 }
 274
 275 struct ufs1_dinode *curinode;
 276 ino_t curinum, ocurrent;
 277
 278 #define GETINUM(ac,inum)    inum = strtoul(argv[ac], &cp, 0); \
 279     if (inum < ROOTINO || inum > maxino || cp == argv[ac] || *cp != '\0' ) { \
 280         printf("inode %d out of range; range is [%d,%d]\n", \
 281                inum, ROOTINO, maxino); \
 282         return 1; \
 283     }
 284
 285 /*
 286  * Focus on given inode number
 287  */
 288 CMDFUNCSTART(focus)
 289 {
 290     ino_t inum;
 291     char *cp;
 292
 293     GETINUM(1,inum);
 294     curinode = ginode(inum);
 295     ocurrent = curinum;
 296     curinum = inum;
 297     printactive(0);
 298     return 0;
 299 }
 300
 301 CMDFUNCSTART(back)
 302 {
 303     curinum = ocurrent;
 304     curinode = ginode(curinum);
 305     printactive(0);
 306     return 0;
 307 }
 308
 309 CMDFUNCSTART(zapi)
 310 {
 311     ino_t inum;
 312     struct ufs1_dinode *dp;
 313     char *cp;
 314
 315     GETINUM(1,inum);
 316     dp = ginode(inum);
 317     clearinode(dp);
 318     inodirty();
 319     if (curinode)                       /* re-set after potential change */
 320         curinode = ginode(curinum);
 321     return 0;
 322 }
 323
 324 CMDFUNCSTART(active)
 325 {
 326     printactive(0);
 327     return 0;
 328 }
 329
 330 CMDFUNCSTART(blocks)
 331 {
 332     printactive(1);
 333     return 0;
 334 }
 335
 336 CMDFUNCSTART(quit)
 337 {
 338     return -1;
 339 }
 340
 341 CMDFUNCSTART(uplink)
 342 {
 343     if (!checkactive())
 344         return 1;
 345     printf("inode %d link count now %d\n", curinum, ++curinode->di_nlink);
 346     inodirty();
 347     return 0;
 348 }
 349
 350 CMDFUNCSTART(downlink)
 351 {
 352     if (!checkactive())
 353         return 1;
 354     printf("inode %d link count now %d\n", curinum, --curinode->di_nlink);
 355     inodirty();
 356     return 0;
 357 }
 358
 359 const char *typename[] = {
 360     "unknown",
 361     "fifo",
 362     "char special",
 363     "unregistered #3",
 364     "directory",
 365     "unregistered #5",
 366     "blk special",
 367     "unregistered #7",
 368     "regular",
 369     "unregistered #9",
 370     "symlink",
 371     "unregistered #11",
 372     "socket",
 373     "unregistered #13",
 374     "whiteout",
 375 };
 376
 377 int slot;
 378
 379 int
 380 scannames(struct inodesc *idesc)
 381 {
 382         struct direct *dirp = idesc->id_dirp;
 383
 384         printf("slot %d ino %d reclen %d: %s, `%.*s'\n",
 385                slot++, dirp->d_ino, dirp->d_reclen, typename[dirp->d_type],
 386                dirp->d_namlen, dirp->d_name);
 387         return (KEEPON);
 388 }
 389
 390 CMDFUNCSTART(ls)
 391 {
 392     struct inodesc idesc;
 393     checkactivedir();                   /* let it go on anyway */
 394
 395     slot = 0;
 396     idesc.id_number = curinum;
 397     idesc.id_func = scannames;
 398     idesc.id_type = DATA;
 399     idesc.id_fix = IGNORE;
 400     ckinode(curinode, &idesc);
 401     curinode = ginode(curinum);
 402
 403     return 0;
 404 }
 405
 406 int findino(struct inodesc *idesc); /* from fsck */
 407 static int dolookup(char *name);
 408
 409 static int
 410 dolookup(char *name)
 411 {
 412     struct inodesc idesc;
 413
 414     if (!checkactivedir())
 415             return 0;
 416     idesc.id_number = curinum;
 417     idesc.id_func = findino;
 418     idesc.id_name = name;
 419     idesc.id_type = DATA;
 420     idesc.id_fix = IGNORE;
 421     if (ckinode(curinode, &idesc) & FOUND) {
 422         curinum = idesc.id_parent;
 423         curinode = ginode(curinum);
 424         printactive(0);
 425         return 1;
 426     } else {
 427         warnx("name `%s' not found in current inode directory", name);
 428         return 0;
 429     }
 430 }
 431
 432 CMDFUNCSTART(focusname)
 433 {
 434     char *p, *val;
 435
 436     if (!checkactive())
 437         return 1;
 438
 439     ocurrent = curinum;
 440
 441     if (argv[1][0] == '/') {
 442         curinum = ROOTINO;
 443         curinode = ginode(ROOTINO);
 444     } else {
 445         if (!checkactivedir())
 446             return 1;
 447     }
 448     for (p = argv[1]; p != NULL;) {
 449         while ((val = strsep(&p, "/")) != NULL && *val == '\0');
 450         if (val) {
 451             printf("component `%s': ", val);
 452             fflush(stdout);
 453             if (!dolookup(val)) {
 454                 curinode = ginode(curinum);
 455                 return(1);
 456             }
 457         }
 458     }
 459     return 0;
 460 }
 461
 462 CMDFUNCSTART(ln)
 463 {
 464     ino_t inum;
 465     int rval;
 466     char *cp;
 467
 468     GETINUM(1,inum);
 469
 470     if (!checkactivedir())
 471         return 1;
 472     rval = makeentry(curinum, inum, argv[2]);
 473     if (rval)
 474         printf("Ino %d entered as `%s'\n", inum, argv[2]);
 475     else
 476         printf("could not enter name? weird.\n");
 477     curinode = ginode(curinum);
 478     return rval;
 479 }
 480
 481 CMDFUNCSTART(rm)
 482 {
 483     int rval;
 484
 485     if (!checkactivedir())
 486         return 1;
 487     rval = changeino(curinum, argv[1], 0);
 488     if (rval & ALTERED) {
 489         printf("Name `%s' removed\n", argv[1]);
 490         return 0;
 491     } else {
 492         printf("could not remove name? weird.\n");
 493         return 1;
 494     }
 495 }
 496
 497 long slotcount, desired;
 498
 499 int
 500 chinumfunc(struct inodesc *idesc)
 501 {
 502         struct direct *dirp = idesc->id_dirp;
 503
 504         if (slotcount++ == desired) {
 505             dirp->d_ino = idesc->id_parent;
 506             return STOP|ALTERED|FOUND;
 507         }
 508         return KEEPON;
 509 }
 510
 511 CMDFUNCSTART(chinum)
 512 {
 513     char *cp;
 514     ino_t inum;
 515     struct inodesc idesc;
 516
 517     slotcount = 0;
 518     if (!checkactivedir())
 519         return 1;
 520     GETINUM(2,inum);
 521
 522     desired = strtol(argv[1], &cp, 0);
 523     if (cp == argv[1] || *cp != '\0' || desired < 0) {
 524         printf("invalid slot number `%s'\n", argv[1]);
 525         return 1;
 526     }
 527
 528     idesc.id_number = curinum;
 529     idesc.id_func = chinumfunc;
 530     idesc.id_fix = IGNORE;
 531     idesc.id_type = DATA;
 532     idesc.id_parent = inum;             /* XXX convenient hiding place */
 533
 534     if (ckinode(curinode, &idesc) & FOUND)
 535         return 0;
 536     else {
 537         warnx("no %sth slot in current directory", argv[1]);
 538         return 1;
 539     }
 540 }
 541
 542 int
 543 chnamefunc(struct inodesc *idesc)
 544 {
 545         struct direct *dirp = idesc->id_dirp;
 546         struct direct testdir;
 547
 548         if (slotcount++ == desired) {
 549             /* will name fit? */
 550             testdir.d_namlen = strlen(idesc->id_name);
 551             if (DIRSIZ(NEWDIRFMT, &testdir) <= dirp->d_reclen) {
 552                 dirp->d_namlen = testdir.d_namlen;
 553                 strcpy(dirp->d_name, idesc->id_name);
 554                 return STOP|ALTERED|FOUND;
 555             } else
 556                 return STOP|FOUND;      /* won't fit, so give up */
 557         }
 558         return KEEPON;
 559 }
 560
 561 CMDFUNCSTART(chname)
 562 {
 563     int rval;
 564     char *cp;
 565     struct inodesc idesc;
 566
 567     slotcount = 0;
 568     if (!checkactivedir())
 569         return 1;
 570
 571     desired = strtoul(argv[1], &cp, 0);
 572     if (cp == argv[1] || *cp != '\0') {
 573         printf("invalid slot number `%s'\n", argv[1]);
 574         return 1;
 575     }
 576
 577     idesc.id_number = curinum;
 578     idesc.id_func = chnamefunc;
 579     idesc.id_fix = IGNORE;
 580     idesc.id_type = DATA;
 581     idesc.id_name = argv[2];
 582
 583     rval = ckinode(curinode, &idesc);
 584     if ((rval & (FOUND|ALTERED)) == (FOUND|ALTERED))
 585         return 0;
 586     else if (rval & FOUND) {
 587         warnx("new name `%s' does not fit in slot %s\n", argv[2], argv[1]);
 588         return 1;
 589     } else {
 590         warnx("no %sth slot in current directory", argv[1]);
 591         return 1;
 592     }
 593 }
 594
 595 struct typemap {
 596     const char *typename;
 597     int typebits;
 598 } typenamemap[]  = {
 599     {"file", IFREG},
 600     {"dir", IFDIR},
 601     {"socket", IFSOCK},
 602     {"fifo", IFIFO},
 603 };
 604
 605 CMDFUNCSTART(newtype)
 606 {
 607     int type;
 608     struct typemap *tp;
 609
 610     if (!checkactive())
 611         return 1;
 612     type = curinode->di_mode & IFMT;
 613     for (tp = typenamemap;
 614          tp < &typenamemap[sizeof(typenamemap)/sizeof(*typenamemap)];
 615          tp++) {
 616         if (!strcmp(argv[1], tp->typename)) {
 617             printf("setting type to %s\n", tp->typename);
 618             type = tp->typebits;
 619             break;
 620         }
 621     }
 622     if (tp == &typenamemap[sizeof(typenamemap)/sizeof(*typenamemap)]) {
 623         warnx("type `%s' not known", argv[1]);
 624         warnx("try one of `file', `dir', `socket', `fifo'");
 625         return 1;
 626     }
 627     curinode->di_mode &= ~IFMT;
 628     curinode->di_mode |= type;
 629     inodirty();
 630     printactive(0);
 631     return 0;
 632 }
 633
 634 CMDFUNCSTART(chlen)
 635 {
 636     int rval = 1;
 637     long len;
 638     char *cp;
 639
 640     if (!checkactive())
 641         return 1;
 642
 643     len = strtol(argv[1], &cp, 0);
 644     if (cp == argv[1] || *cp != '\0' || len < 0) {
 645         warnx("bad length `%s'", argv[1]);
 646         return 1;
 647     }
 648
 649     curinode->di_size = len;
 650     inodirty();
 651     printactive(0);
 652     return rval;
 653 }
 654
 655 CMDFUNCSTART(chmode)
 656 {
 657     int rval = 1;
 658     long modebits;
 659     char *cp;
 660
 661     if (!checkactive())
 662         return 1;
 663
 664     modebits = strtol(argv[1], &cp, 8);
 665     if (cp == argv[1] || *cp != '\0' || (modebits & ~07777)) {
 666         warnx("bad modebits `%s'", argv[1]);
 667         return 1;
 668     }
 669
 670     curinode->di_mode &= ~07777;
 671     curinode->di_mode |= modebits;
 672     inodirty();
 673     printactive(0);
 674     return rval;
 675 }
 676
 677 CMDFUNCSTART(chaflags)
 678 {
 679     int rval = 1;
 680     u_long flags;
 681     char *cp;
 682
 683     if (!checkactive())
 684         return 1;
 685
 686     flags = strtoul(argv[1], &cp, 0);
 687     if (cp == argv[1] || *cp != '\0' ) {
 688         warnx("bad flags `%s'", argv[1]);
 689         return 1;
 690     }
 691
 692     if (flags > UINT_MAX) {
 693         warnx("flags set beyond 32-bit range of field (%lx)\n", flags);
 694         return(1);
 695     }
 696     curinode->di_flags = flags;
 697     inodirty();
 698     printactive(0);
 699     return rval;
 700 }
 701
 702 CMDFUNCSTART(chgen)
 703 {
 704     int rval = 1;
 705     long gen;
 706     char *cp;
 707
 708     if (!checkactive())
 709         return 1;
 710
 711     gen = strtol(argv[1], &cp, 0);
 712     if (cp == argv[1] || *cp != '\0' ) {
 713         warnx("bad gen `%s'", argv[1]);
 714         return 1;
 715     }
 716
 717     if (gen > INT_MAX || gen < INT_MIN) {
 718         warnx("gen set beyond 32-bit range of field (%lx)\n", gen);
 719         return(1);
 720     }
 721     curinode->di_gen = gen;
 722     inodirty();
 723     printactive(0);
 724     return rval;
 725 }
 726
 727 CMDFUNCSTART(linkcount)
 728 {
 729     int rval = 1;
 730     int lcnt;
 731     char *cp;
 732
 733     if (!checkactive())
 734         return 1;
 735
 736     lcnt = strtol(argv[1], &cp, 0);
 737     if (cp == argv[1] || *cp != '\0' ) {
 738         warnx("bad link count `%s'", argv[1]);
 739         return 1;
 740     }
 741     if (lcnt > USHRT_MAX || lcnt < 0) {
 742         warnx("max link count is %d\n", USHRT_MAX);
 743         return 1;
 744     }
 745
 746     curinode->di_nlink = lcnt;
 747     inodirty();
 748     printactive(0);
 749     return rval;
 750 }
 751
 752 CMDFUNCSTART(chowner)
 753 {
 754     int rval = 1;
 755     unsigned long uid;
 756     char *cp;
 757     struct passwd *pwd;
 758
 759     if (!checkactive())
 760         return 1;
 761
 762     uid = strtoul(argv[1], &cp, 0);
 763     if (cp == argv[1] || *cp != '\0' ) {
 764         /* try looking up name */
 765         if ((pwd = getpwnam(argv[1]))) {
 766             uid = pwd->pw_uid;
 767         } else {
 768             warnx("bad uid `%s'", argv[1]);
 769             return 1;
 770         }
 771     }
 772
 773     curinode->di_uid = uid;
 774     inodirty();
 775     printactive(0);
 776     return rval;
 777 }
 778
 779 CMDFUNCSTART(chgroup)
 780 {
 781     int rval = 1;
 782     unsigned long gid;
 783     char *cp;
 784     struct group *grp;
 785
 786     if (!checkactive())
 787         return 1;
 788
 789     gid = strtoul(argv[1], &cp, 0);
 790     if (cp == argv[1] || *cp != '\0' ) {
 791         if ((grp = getgrnam(argv[1]))) {
 792             gid = grp->gr_gid;
 793         } else {
 794             warnx("bad gid `%s'", argv[1]);
 795             return 1;
 796         }
 797     }
 798
 799     curinode->di_gid = gid;
 800     inodirty();
 801     printactive(0);
 802     return rval;
 803 }
 804
 805 int
 806 dotime(char *name, struct timespec *rts)
 807 {
 808     char *p, *val;
 809     struct tm t;
 810     int32_t sec;
 811     int32_t nsec;
 812     p = strchr(name, '.');
 813     if (p) {
 814         *p = '\0';
 815         nsec = strtoul(++p, &val, 0);
 816         if (val == p || *val != '\0' || nsec >= 1000000000 || nsec < 0) {
 817                 warnx("invalid nanoseconds");
 818                 goto badformat;
 819         }
 820     } else
 821         nsec = 0;
 822     if (strlen(name) != 14) {
 823 badformat:
 824         warnx("date format: YYYYMMDDHHMMSS[.nsec]");
 825         return 1;
 826     }
 827
 828     for (p = name; *p; p++)
 829         if (*p < '0' || *p > '9')
 830             goto badformat;
 831
 832     p = name;
 833 #define VAL() ((*p++) - '0')
 834     t.tm_year = VAL();
 835     t.tm_year = VAL() + t.tm_year * 10;
 836     t.tm_year = VAL() + t.tm_year * 10;
 837     t.tm_year = VAL() + t.tm_year * 10 - 1900;
 838     t.tm_mon = VAL();
 839     t.tm_mon = VAL() + t.tm_mon * 10 - 1;
 840     t.tm_mday = VAL();
 841     t.tm_mday = VAL() + t.tm_mday * 10;
 842     t.tm_hour = VAL();
 843     t.tm_hour = VAL() + t.tm_hour * 10;
 844     t.tm_min = VAL();
 845     t.tm_min = VAL() + t.tm_min * 10;
 846     t.tm_sec = VAL();
 847     t.tm_sec = VAL() + t.tm_sec * 10;
 848     t.tm_isdst = -1;
 849
 850     sec = mktime(&t);
 851     if (sec == -1) {
 852         warnx("date/time out of range");
 853         return 1;
 854     }
 855     rts->tv_sec = sec;
 856     rts->tv_nsec = nsec;
 857     return 0;
 858 }
 859
 860 CMDFUNCSTART(chmtime)
 861 {
 862     if (dotime(argv[1], &curinode->di_mtime))
 863         return 1;
 864     inodirty();
 865     printactive(0);
 866     return 0;
 867 }
 868
 869 CMDFUNCSTART(chatime)
 870 {
 871     if (dotime(argv[1], &curinode->di_atime))
 872         return 1;
 873     inodirty();
 874     printactive(0);
 875     return 0;
 876 }
 877
 878 CMDFUNCSTART(chctime)
 879 {
 880     if (dotime(argv[1], &curinode->di_ctime))
 881         return 1;
 882     inodirty();
 883     printactive(0);
 884     return 0;
 885 }