sbin/restore/main.c

   1 /*
   2  * Copyright (c) 1983, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. Neither the name of the University nor the names of its contributors
  14  *    may be used to endorse or promote products derived from this software
  15  *    without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  *
  29  * @(#) Copyright (c) 1983, 1993 The Regents of the University of California.  All rights reserved.
  30  * @(#)main.c   8.6 (Berkeley) 5/4/95
  31  * $FreeBSD: src/sbin/restore/main.c,v 1.10.2.3 2001/10/02 08:30:17 cjc Exp $
  32  */
  33
  34 #include <sys/param.h>
  35 #include <sys/stat.h>
  36
  37 #include <vfs/ufs/dinode.h>
  38 #include <protocols/dumprestore.h>
  39
  40 #include <err.h>
  41 #include <paths.h>
  42 #include <stdio.h>
  43 #include <stdlib.h>
  44 #include <string.h>
  45 #include <unistd.h>
  46
  47 #include "restore.h"
  48 #include "extern.h"
  49
  50 int     bflag = 0, cvtflag = 0, dflag = 0, vflag = 0, yflag = 0;
  51 int     hflag = 1, mflag = 1, Nflag = 0;
  52 int     uflag = 0;
  53 int     dokerberos = 0;
  54 char    command = '\0';
  55 long    dumpnum = 1;
  56 long    volno = 0;
  57 long    ntrec;
  58 char    *dumpmap;
  59 char    *usedinomap;
  60 ufs1_ino_t maxino;
  61 time_t  dumptime;
  62 time_t  dumpdate;
  63 FILE    *terminal;
  64
  65 static void obsolete(int *, char **[]);
  66 static void usage(void);
  67
  68 int
  69 main(int argc, char *argv[])
  70 {
  71         int ch;
  72         ufs1_ino_t ino;
  73         char *inputdev;
  74         const char *symtbl = "./restoresymtable";
  75         char *p, name[MAXPATHLEN];
  76
  77         /* Temp files should *not* be readable.  We set permissions later. */
  78         umask(077);
  79
  80         if (argc < 2)
  81                 usage();
  82
  83         if ((inputdev = getenv("TAPE")) == NULL)
  84                 inputdev = __DECONST(char *, _PATH_DEFTAPE);
  85         obsolete(&argc, &argv);
  86 #ifdef KERBEROS
  87 #define optlist "b:cdf:hikmNRrs:tuvxy"
  88 #else
  89 #define optlist "b:cdf:himNRrs:tuvxy"
  90 #endif
  91         while ((ch = getopt(argc, argv, optlist)) != -1)
  92                 switch(ch) {
  93                 case 'b':
  94                         /* Change default tape blocksize. */
  95                         bflag = 1;
  96                         ntrec = strtol(optarg, &p, 10);
  97                         if (*p)
  98                                 errx(1, "illegal blocksize -- %s", optarg);
  99                         if (ntrec <= 0)
 100                                 errx(1, "block size must be greater than 0");
 101                         break;
 102                 case 'c':
 103                         cvtflag = 1;
 104                         break;
 105                 case 'd':
 106                         dflag = 1;
 107                         break;
 108                 case 'f':
 109                         inputdev = optarg;
 110                         break;
 111                 case 'h':
 112                         hflag = 0;
 113                         break;
 114 #ifdef KERBEROS
 115                 case 'k':
 116                         dokerberos = 1;
 117                         break;
 118 #endif
 119                 case 'i':
 120                 case 'R':
 121                 case 'r':
 122                 case 't':
 123                 case 'x':
 124                         if (command != '\0')
 125                                 errx(1,
 126                                     "%c and %c options are mutually exclusive",
 127                                     ch, command);
 128                         command = ch;
 129                         break;
 130                 case 'm':
 131                         mflag = 0;
 132                         break;
 133                 case 'N':
 134                         Nflag = 1;
 135                         break;
 136                 case 's':
 137                         /* Dumpnum (skip to) for multifile dump tapes. */
 138                         dumpnum = strtol(optarg, &p, 10);
 139                         if (*p)
 140                                 errx(1, "illegal dump number -- %s", optarg);
 141                         if (dumpnum <= 0)
 142                                 errx(1, "dump number must be greater than 0");
 143                         break;
 144                 case 'u':
 145                         uflag = 1;
 146                         break;
 147                 case 'v':
 148                         vflag = 1;
 149                         break;
 150                 case 'y':
 151                         yflag = 1;
 152                         break;
 153                 default:
 154                         usage();
 155                 }
 156         argc -= optind;
 157         argv += optind;
 158
 159         if (command == '\0')
 160                 errx(1, "none of i, R, r, t or x options specified");
 161
 162         if (signal(SIGINT, onintr) == SIG_IGN)
 163                 signal(SIGINT, SIG_IGN);
 164         if (signal(SIGTERM, onintr) == SIG_IGN)
 165                 signal(SIGTERM, SIG_IGN);
 166         setlinebuf(stderr);
 167
 168         setinput(inputdev);
 169
 170         if (argc == 0) {
 171                 argc = 1;
 172                 *--argv = __DECONST(char *, ".");
 173         }
 174
 175         switch (command) {
 176         /*
 177          * Interactive mode.
 178          */
 179         case 'i':
 180                 setup();
 181                 extractdirs(1);
 182                 initsymtable(NULL);
 183                 runcmdshell();
 184                 break;
 185         /*
 186          * Incremental restoration of a file system.
 187          */
 188         case 'r':
 189                 setup();
 190                 if (dumptime > 0) {
 191                         /*
 192                          * This is an incremental dump tape.
 193                          */
 194                         vprintf(stdout, "Begin incremental restore\n");
 195                         initsymtable(symtbl);
 196                         extractdirs(1);
 197                         removeoldleaves();
 198                         vprintf(stdout, "Calculate node updates.\n");
 199                         treescan(__DECONST(char *, "."), ROOTINO, nodeupdates);
 200                         findunreflinks();
 201                         removeoldnodes();
 202                 } else {
 203                         /*
 204                          * This is a level zero dump tape.
 205                          */
 206                         vprintf(stdout, "Begin level 0 restore\n");
 207                         initsymtable(NULL);
 208                         extractdirs(1);
 209                         vprintf(stdout, "Calculate extraction list.\n");
 210                         treescan(__DECONST(char *, "."), ROOTINO, nodeupdates);
 211                 }
 212                 createleaves(symtbl);
 213                 createlinks();
 214                 setdirmodes(FORCE);
 215                 checkrestore();
 216                 if (dflag) {
 217                         vprintf(stdout, "Verify the directory structure\n");
 218                         treescan(__DECONST(char *, "."), ROOTINO, verifyfile);
 219                 }
 220                 dumpsymtable(symtbl, (long)1);
 221                 break;
 222         /*
 223          * Resume an incremental file system restoration.
 224          */
 225         case 'R':
 226                 initsymtable(symtbl);
 227                 skipmaps();
 228                 skipdirs();
 229                 createleaves(symtbl);
 230                 createlinks();
 231                 setdirmodes(FORCE);
 232                 checkrestore();
 233                 dumpsymtable(symtbl, (long)1);
 234                 break;
 235         /*
 236          * List contents of tape.
 237          */
 238         case 't':
 239                 setup();
 240                 extractdirs(0);
 241                 initsymtable(NULL);
 242                 while (argc--) {
 243                         canon(*argv++, name, sizeof(name));
 244                         ino = dirlookup(name);
 245                         if (ino == 0)
 246                                 continue;
 247                         treescan(name, ino, listfile);
 248                 }
 249                 break;
 250         /*
 251          * Batch extraction of tape contents.
 252          */
 253         case 'x':
 254                 setup();
 255                 extractdirs(1);
 256                 initsymtable(NULL);
 257                 while (argc--) {
 258                         canon(*argv++, name, sizeof(name));
 259                         ino = dirlookup(name);
 260                         if (ino == 0)
 261                                 continue;
 262                         if (mflag)
 263                                 pathcheck(name);
 264                         treescan(name, ino, addfile);
 265                 }
 266                 createfiles();
 267                 createlinks();
 268                 setdirmodes(0);
 269                 if (dflag)
 270                         checkrestore();
 271                 break;
 272         }
 273         done(0);
 274         /* NOTREACHED */
 275 }
 276
 277 static void
 278 usage(void)
 279 {
 280         fprintf(stderr, "usage:\t%s\n\t%s\n\t%s\n\t%s\n\t%s\n",
 281           "restore -i [-cdhkmNuvy] [-b blocksize] [-f file] [-s fileno]",
 282           "restore -r [-cdkNuvy] [-b blocksize] [-f file] [-s fileno]",
 283           "restore -R [-cdkNuvy] [-b blocksize] [-f file] [-s fileno]",
 284           "restore -x [-cdhkmNuvy] [-b blocksize] [-f file] [-s fileno] [file ...]",
 285           "restore -t [-cdhkNuvy] [-b blocksize] [-f file] [-s fileno] [file ...]");
 286         done(1);
 287 }
 288
 289 /*
 290  * obsolete --
 291  *      Change set of key letters and ordered arguments into something
 292  *      getopt(3) will like.
 293  */
 294 static void
 295 obsolete(int *argcp, char **argvp[])
 296 {
 297         int argc, flags;
 298         char *ap, **argv, *flagsp, **nargv, *p;
 299
 300         /* Setup. */
 301         argv = *argvp;
 302         argc = *argcp;
 303
 304         /* Return if no arguments or first argument has leading dash. */
 305         ap = argv[1];
 306         if (argc == 1 || *ap == '-')
 307                 return;
 308
 309         /* Allocate space for new arguments. */
 310         if ((*argvp = nargv = malloc((argc + 1) * sizeof(char *))) == NULL ||
 311             (p = flagsp = malloc(strlen(ap) + 2)) == NULL)
 312                 err(1, NULL);
 313
 314         *nargv++ = *argv;
 315         argv += 2, argc -= 2;
 316
 317         for (flags = 0; *ap; ++ap) {
 318                 switch (*ap) {
 319                 case 'b':
 320                 case 'f':
 321                 case 's':
 322                         if (*argv == NULL) {
 323                                 warnx("option requires an argument -- %c", *ap);
 324                                 usage();
 325                         }
 326                         if ((nargv[0] = malloc(strlen(*argv) + 2 + 1)) == NULL)
 327                                 err(1, NULL);
 328                         nargv[0][0] = '-';
 329                         nargv[0][1] = *ap;
 330                         strcpy(&nargv[0][2], *argv);
 331                         ++argv;
 332                         ++nargv;
 333                         break;
 334                 default:
 335                         if (!flags) {
 336                                 *p++ = '-';
 337                                 flags = 1;
 338                         }
 339                         *p++ = *ap;
 340                         break;
 341                 }
 342         }
 343
 344         /* Terminate flags. */
 345         if (flags) {
 346                 *p = '\0';
 347                 *nargv++ = flagsp;
 348         }
 349
 350         /* Copy remaining arguments. */
 351         while ((*nargv++ = *argv++));
 352
 353         /* Update argument count. */
 354         *argcp = nargv - *argvp - 1;
 355 }