main.c revision 128073
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 * 4. 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 30#ifndef lint 31static const char copyright[] = 32"@(#) Copyright (c) 1983, 1993\n\ 33 The Regents of the University of California. All rights reserved.\n"; 34#endif /* not lint */ 35 36#ifndef lint 37#if 0 38static char sccsid[] = "@(#)main.c 8.6 (Berkeley) 5/4/95"; 39#endif 40static const char rcsid[] = 41 "$FreeBSD: head/sbin/restore/main.c 128073 2004-04-09 19:58:40Z markm $"; 42#endif /* not lint */ 43 44#include <sys/param.h> 45#include <sys/stat.h> 46 47#include <ufs/ufs/dinode.h> 48#include <protocols/dumprestore.h> 49 50#include <err.h> 51#include <limits.h> 52#include <locale.h> 53#include <paths.h> 54#include <stdio.h> 55#include <stdlib.h> 56#include <string.h> 57#include <unistd.h> 58 59#include "restore.h" 60#include "extern.h" 61 62int bflag = 0, cvtflag = 0, dflag = 0, vflag = 0, yflag = 0; 63int hflag = 1, mflag = 1, Nflag = 0; 64int uflag = 0; 65char command = '\0'; 66long dumpnum = 1; 67long volno = 0; 68long ntrec; 69char *dumpmap; 70char *usedinomap; 71ino_t maxino; 72time_t dumptime; 73time_t dumpdate; 74FILE *terminal; 75 76static void obsolete(int *, char **[]); 77static void usage(void) __dead2; 78 79int 80main(int argc, char *argv[]) 81{ 82 int ch; 83 ino_t ino; 84 char *inputdev; 85 char *symtbl = "./restoresymtable"; 86 char *p, name[MAXPATHLEN]; 87 88 /* Temp files should *not* be readable. We set permissions later. */ 89 (void) umask(077); 90 91 if (argc < 2) 92 usage(); 93 94 (void)setlocale(LC_ALL, ""); 95 96 if ((inputdev = getenv("TAPE")) == NULL) 97 inputdev = _PATH_DEFTAPE; 98 obsolete(&argc, &argv); 99 while ((ch = getopt(argc, argv, "b:df:himNRrs:tuvxy")) != -1) 100 switch(ch) { 101 case 'b': 102 /* Change default tape blocksize. */ 103 bflag = 1; 104 ntrec = strtol(optarg, &p, 10); 105 if (*p) 106 errx(1, "illegal blocksize -- %s", optarg); 107 if (ntrec <= 0) 108 errx(1, "block size must be greater than 0"); 109 break; 110 case 'd': 111 dflag = 1; 112 break; 113 case 'f': 114 inputdev = optarg; 115 break; 116 case 'h': 117 hflag = 0; 118 break; 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 (void) signal(SIGINT, SIG_IGN); 164 if (signal(SIGTERM, onintr) == SIG_IGN) 165 (void) signal(SIGTERM, SIG_IGN); 166 setlinebuf(stderr); 167 168 setinput(inputdev); 169 170 if (argc == 0) { 171 argc = 1; 172 *--argv = "."; 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(".", 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((char *)0); 208 extractdirs(1); 209 vprintf(stdout, "Calculate extraction list.\n"); 210 treescan(".", 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(".", 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((char *)0); 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((char *)0); 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 277static void 278usage() 279{ 280 (void)fprintf(stderr, "usage:\t%s\n\t%s\n\t%s\n\t%s\n\t%s\n", 281 "restore -i [-cdhmNuvy] [-b blocksize] [-f file] [-s fileno]", 282 "restore -r [-cdNuvy] [-b blocksize] [-f file] [-s fileno]", 283 "restore -R [-cdNuvy] [-b blocksize] [-f file] [-s fileno]", 284 "restore -x [-cdhmNuvy] [-b blocksize] [-f file] [-s fileno] [file ...]", 285 "restore -t [-cdhNuvy] [-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 */ 294static void 295obsolete(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 (void)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} 356