1 /* $NetBSD: main.c,v 1.37 2021/06/19 13:56:35 christos Exp $ */ 2 3 /* 4 * Copyright (c) 1983, 1993 5 * The Regents of the University of California. 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. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 #ifndef lint 34 __COPYRIGHT("@(#) Copyright (c) 1983, 1993\ 35 The Regents of the University of California. All rights reserved."); 36 #endif /* not lint */ 37 38 #ifndef lint 39 #if 0 40 static char sccsid[] = "@(#)main.c 8.6 (Berkeley) 5/4/95"; 41 #else 42 __RCSID("$NetBSD: main.c,v 1.37 2021/06/19 13:56:35 christos Exp $"); 43 #endif 44 #endif /* not lint */ 45 46 #include <sys/param.h> 47 #include <sys/time.h> 48 49 #include <ufs/ufs/dinode.h> 50 #include <ufs/ffs/fs.h> 51 #include <protocols/dumprestore.h> 52 53 #include <err.h> 54 #include <errno.h> 55 #include <paths.h> 56 #include <signal.h> 57 #include <stdio.h> 58 #include <stdlib.h> 59 #include <string.h> 60 #include <unistd.h> 61 62 #include "restore.h" 63 #include "extern.h" 64 65 struct context curfile; 66 union u_spcl u_spcl; 67 int uflag; 68 int bflag = 0, cvtflag = 0, dflag = 0, vflag = 0, yflag = 0; 69 int hflag = 1, mflag = 1, Dflag = 0, Nflag = 0; 70 char command = '\0'; 71 int32_t dumpnum = 1; 72 int32_t volno = 0; 73 int32_t ntrec; 74 char *dumpmap; 75 char *usedinomap; 76 ino_t maxino; 77 time_t dumptime; 78 time_t dumpdate; 79 size_t pagesize; 80 FILE *terminal; 81 const char *tmpdir; 82 int dotflag = 0; 83 84 FILE *Mtreefile = NULL; 85 86 static void obsolete(int *, char **[]); 87 __dead static void usage(void); 88 89 int 90 main(int argc, char *argv[]) 91 { 92 int ch; 93 ino_t ino; 94 const char *inputdev; 95 const char *symtbl = "./restoresymtable"; 96 char *p, name[MAXPATHLEN]; 97 static char dot[] = "."; 98 99 if (argc < 2) 100 usage(); 101 102 if ((inputdev = getenv("TAPE")) == NULL) 103 inputdev = _PATH_DEFTAPE; 104 if ((tmpdir = getenv("TMPDIR")) == NULL) 105 tmpdir = _PATH_TMP; 106 obsolete(&argc, &argv); 107 while ((ch = getopt(argc, argv, "b:cD:df:himM:NRrs:tuvxy")) != -1) 108 switch (ch) { 109 case 'b': 110 /* Change default tape blocksize. */ 111 bflag = 1; 112 ntrec = strtol(optarg, &p, 10); 113 if (*p) 114 errx(1, "illegal blocksize -- %s", optarg); 115 if (ntrec <= 0) 116 errx(1, "block size must be greater than 0"); 117 break; 118 case 'c': 119 cvtflag = 1; 120 break; 121 case 'D': 122 ddesc = digest_lookup(optarg); 123 if (ddesc == NULL) 124 err(1, "unknown digest algorithm: %s", optarg); 125 Dflag = 1; 126 break; 127 case 'd': 128 dflag = 1; 129 break; 130 case 'f': 131 inputdev = optarg; 132 break; 133 case 'h': 134 hflag = 0; 135 break; 136 case 'i': 137 case 'R': 138 case 'r': 139 case 't': 140 case 'x': 141 if (command != '\0') 142 errx(1, 143 "%c and %c options are mutually exclusive", 144 ch, command); 145 command = ch; 146 break; 147 case 'm': 148 mflag = 0; 149 break; 150 case 'N': 151 Nflag = 1; 152 break; 153 case 'M': 154 Mtreefile = fopen(optarg, "a"); 155 if (Mtreefile == NULL) 156 err(1, "can't open %s", optarg); 157 break; 158 case 's': 159 /* Dumpnum (skip to) for multifile dump tapes. */ 160 dumpnum = strtol(optarg, &p, 10); 161 if (*p) 162 errx(1, "illegal dump number -- %s", optarg); 163 if (dumpnum <= 0) 164 errx(1, "dump number must be greater than 0"); 165 break; 166 case 'u': 167 uflag = 1; 168 break; 169 case 'v': 170 vflag = 1; 171 break; 172 case 'y': 173 yflag = 1; 174 break; 175 default: 176 usage(); 177 } 178 argc -= optind; 179 argv += optind; 180 181 if (command == '\0') 182 errx(1, "none of i, R, r, t or x options specified"); 183 184 if (Nflag || command == 't') 185 uflag = 0; 186 187 if (signal(SIGINT, onintr) == SIG_IGN) 188 (void) signal(SIGINT, SIG_IGN); 189 if (signal(SIGTERM, onintr) == SIG_IGN) 190 (void) signal(SIGTERM, SIG_IGN); 191 setlinebuf(stderr); 192 pagesize = sysconf(_SC_PAGESIZE); 193 194 atexit(cleanup); 195 196 setinput(inputdev); 197 198 if (argc == 0) { 199 argc = 1; 200 *--argv = dot; 201 } 202 203 switch (command) { 204 /* 205 * Interactive mode. 206 */ 207 case 'i': 208 setup(); 209 extractdirs(1); 210 initsymtable(NULL); 211 runcmdshell(); 212 break; 213 /* 214 * Incremental restoration of a file system. 215 */ 216 case 'r': 217 setup(); 218 if (dumptime > 0) { 219 /* 220 * This is an incremental dump tape. 221 */ 222 vprintf(stdout, "Begin incremental restore\n"); 223 initsymtable(symtbl); 224 extractdirs(1); 225 removeoldleaves(); 226 vprintf(stdout, "Calculate node updates.\n"); 227 treescan(".", UFS_ROOTINO, nodeupdates); 228 findunreflinks(); 229 removeoldnodes(); 230 } else { 231 /* 232 * This is a level zero dump tape. 233 */ 234 vprintf(stdout, "Begin level 0 restore\n"); 235 initsymtable((char *)0); 236 extractdirs(1); 237 vprintf(stdout, "Calculate extraction list.\n"); 238 treescan(".", UFS_ROOTINO, nodeupdates); 239 } 240 createleaves(symtbl); 241 createlinks(); 242 setdirmodes(FORCE); 243 checkrestore(); 244 if (dflag) { 245 vprintf(stdout, "Verify the directory structure\n"); 246 treescan(".", UFS_ROOTINO, verifyfile); 247 } 248 dumpsymtable(symtbl, (long)1); 249 break; 250 /* 251 * Resume an incremental file system restoration. 252 */ 253 case 'R': 254 initsymtable(symtbl); 255 skipmaps(); 256 skipdirs(); 257 createleaves(symtbl); 258 createlinks(); 259 setdirmodes(FORCE); 260 checkrestore(); 261 dumpsymtable(symtbl, (long)1); 262 break; 263 /* 264 * List contents of tape. 265 */ 266 case 't': 267 setup(); 268 extractdirs(0); 269 initsymtable((char *)0); 270 while (argc--) { 271 canon(*argv++, name, sizeof(name)); 272 ino = dirlookup(name); 273 if (ino == 0) 274 continue; 275 treescan(name, ino, listfile); 276 } 277 break; 278 /* 279 * Batch extraction of tape contents. 280 */ 281 case 'x': 282 setup(); 283 extractdirs(1); 284 initsymtable((char *)0); 285 while (argc--) { 286 canon(*argv++, name, sizeof(name)); 287 ino = dirlookup(name); 288 if (ino == 0) 289 continue; 290 if (ino == UFS_ROOTINO) 291 dotflag = 1; 292 if (mflag) 293 pathcheck(name); 294 treescan(name, ino, addfile); 295 } 296 createfiles(); 297 createlinks(); 298 setdirmodes(0); 299 if (dflag) 300 checkrestore(); 301 break; 302 } 303 exit(0); 304 /* NOTREACHED */ 305 } 306 307 static void 308 usage(void) 309 { 310 const char *progname = getprogname(); 311 312 (void)fprintf(stderr, 313 "usage: %s -i [-cdhmvyN] [-b bsize] [-D algorithm] " 314 "[-f file] [-M mtreefile] [-s fileno]\n", progname); 315 (void)fprintf(stderr, 316 " %s -R [-cdvyN] [-b bsize] [-D algorithm] [-f file] " 317 "[-M mtreefile] [-s fileno]\n", progname); 318 (void)fprintf(stderr, 319 " %s -r [-cdvyN] [-b bsize] [-D algorithm] [-f file] " 320 "[-M mtreefile] [-s fileno]\n", progname); 321 (void)fprintf(stderr, 322 " %s -t [-cdhvy] [-b bsize] [-D algorithm] [-f file]\n" 323 " [-s fileno] [file ...]\n", progname); 324 (void)fprintf(stderr, 325 " %s -x [-cdhmvyN] [-b bsize] [-D algorithm] [-f file]\n" 326 " [-M mtreefile] [-s fileno] [file ...]\n", progname); 327 exit(1); 328 } 329 330 /* 331 * obsolete -- 332 * Change set of key letters and ordered arguments into something 333 * getopt(3) will like. 334 */ 335 static void 336 obsolete(int *argcp, char **argvp[]) 337 { 338 int argc, flags; 339 char *ap, **argv, *flagsp, **nargv, *p; 340 341 /* Setup. */ 342 argv = *argvp; 343 argc = *argcp; 344 345 /* Return if no arguments or first argument has leading dash. */ 346 ap = argv[1]; 347 if (argc == 1 || *ap == '-') 348 return; 349 350 /* Allocate space for new arguments. */ 351 if ((*argvp = nargv = malloc((argc + 1) * sizeof(char *))) == NULL || 352 (p = flagsp = malloc(strlen(ap) + 2)) == NULL) 353 err(1, NULL); 354 355 *nargv++ = *argv; 356 argv += 2; 357 358 for (flags = 0; *ap; ++ap) { 359 switch (*ap) { 360 case 'b': 361 case 'f': 362 case 's': 363 if (*argv == NULL) { 364 warnx("option requires an argument -- %c", *ap); 365 usage(); 366 } 367 if ((nargv[0] = malloc(strlen(*argv) + 2 + 1)) == NULL) 368 err(1, NULL); 369 nargv[0][0] = '-'; 370 nargv[0][1] = *ap; 371 (void)strcpy(&nargv[0][2], *argv); 372 ++argv; 373 ++nargv; 374 break; 375 default: 376 if (!flags) { 377 *p++ = '-'; 378 flags = 1; 379 } 380 *p++ = *ap; 381 break; 382 } 383 } 384 385 /* Terminate flags. */ 386 if (flags) { 387 *p = '\0'; 388 *nargv++ = flagsp; 389 } else { 390 free(flagsp); 391 } 392 393 /* Copy remaining arguments. */ 394 while ((*nargv++ = *argv++) != NULL) 395 ; 396 397 /* Update argument count. */ 398 *argcp = nargv - *argvp - 1; 399 } 400
Indexes created Sat Sep 20 22:09:52 GMT 2025