1 /* $OpenBSD: main.c,v 1.18 2007/09/02 15:19:25 deraadt Exp $ */ 2 /* $NetBSD: main.c,v 1.13 1997/07/01 05:37:51 lukem Exp $ */ 3 4 /* 5 * Copyright (c) 1983, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 33 #ifndef lint 34 static char copyright[] = 35 "@(#) Copyright (c) 1983, 1993\n\ 36 The Regents of the University of California. All rights reserved.\n"; 37 #endif /* not lint */ 38 39 #ifndef lint 40 #if 0 41 static char sccsid[] = "@(#)main.c 8.3 (Berkeley) 9/13/94"; 42 #else 43 static const char rcsid[] = "$OpenBSD: main.c,v 1.18 2007/09/02 15:19:25 deraadt Exp $"; 44 #endif 45 #endif /* not lint */ 46 47 #include <sys/param.h> 48 #include <sys/stat.h> 49 #include <sys/time.h> 50 51 #include <ufs/ffs/fs.h> 52 #include <ufs/ufs/dinode.h> 53 #include <protocols/dumprestore.h> 54 55 #include <err.h> 56 #include <paths.h> 57 #include <signal.h> 58 #include <stdio.h> 59 #include <stdlib.h> 60 #include <string.h> 61 62 #include "restore.h" 63 #include "extern.h" 64 65 int bflag = 0, cvtflag = 0, dflag = 0, vflag = 0, yflag = 0; 66 int hflag = 1, mflag = 1, Nflag = 0; 67 char command = '\0'; 68 long dumpnum = 1; 69 long volno = 0; 70 long ntrec; 71 char *dumpmap; 72 char *usedinomap; 73 ino_t maxino; 74 time_t dumptime; 75 time_t dumpdate; 76 FILE *terminal; 77 char *tmpdir; 78 79 static void obsolete(int *, char **[]); 80 static void usage(void); 81 82 int 83 main(int argc, char *argv[]) 84 { 85 int ch; 86 ino_t ino; 87 char *inputdev; 88 char *symtbl = "./restoresymtable"; 89 char *p, name[MAXPATHLEN]; 90 91 /* Temp files should *not* be readable. We set permissions later. */ 92 (void)umask(077); 93 94 if (argc < 2) 95 usage(); 96 97 if ((inputdev = getenv("TAPE")) == NULL) 98 inputdev = _PATH_DEFTAPE; 99 if ((tmpdir = getenv("TMPDIR")) == NULL) 100 tmpdir = _PATH_TMP; 101 if ((tmpdir = strdup(tmpdir)) == NULL) 102 err(1, NULL); 103 for (p = tmpdir + strlen(tmpdir) - 1; p >= tmpdir && *p == '/'; p--) 104 ; 105 obsolete(&argc, &argv); 106 while ((ch = getopt(argc, argv, "b:cdf:himNRrs:tvxy")) != -1) 107 switch(ch) { 108 case 'b': 109 /* Change default tape blocksize. */ 110 bflag = 1; 111 ntrec = strtol(optarg, &p, 10); 112 if (*p) 113 errx(1, "illegal blocksize -- %s", optarg); 114 if (ntrec <= 0) 115 errx(1, "block size must be greater than 0"); 116 break; 117 case 'c': 118 cvtflag = 1; 119 break; 120 case 'd': 121 dflag = 1; 122 break; 123 case 'f': 124 inputdev = optarg; 125 break; 126 case 'h': 127 hflag = 0; 128 break; 129 case 'i': 130 case 'R': 131 case 'r': 132 case 't': 133 case 'x': 134 if (command != '\0') 135 errx(1, 136 "%c and %c options are mutually exclusive", 137 ch, command); 138 command = ch; 139 break; 140 case 'm': 141 mflag = 0; 142 break; 143 case 'N': 144 Nflag = 1; 145 break; 146 case 's': 147 /* Dumpnum (skip to) for multifile dump tapes. */ 148 dumpnum = strtol(optarg, &p, 10); 149 if (*p) 150 errx(1, "illegal dump number -- %s", optarg); 151 if (dumpnum <= 0) 152 errx(1, "dump number must be greater than 0"); 153 break; 154 case 'v': 155 vflag = 1; 156 break; 157 case 'y': 158 yflag = 1; 159 break; 160 default: 161 usage(); 162 } 163 argc -= optind; 164 argv += optind; 165 166 if (command == '\0') 167 errx(1, "none of i, R, r, t or x options specified"); 168 169 if (signal(SIGINT, onintr) == SIG_IGN) 170 (void)signal(SIGINT, SIG_IGN); 171 if (signal(SIGTERM, onintr) == SIG_IGN) 172 (void)signal(SIGTERM, SIG_IGN); 173 setlinebuf(stderr); 174 175 atexit(cleanup); 176 177 setinput(inputdev); 178 179 if (argc == 0) { 180 argc = 1; 181 *--argv = "."; 182 } 183 184 switch (command) { 185 /* 186 * Interactive mode. 187 */ 188 case 'i': 189 setup(); 190 extractdirs(1); 191 initsymtable(NULL); 192 runcmdshell(); 193 break; 194 /* 195 * Incremental restoration of a file system. 196 */ 197 case 'r': 198 setup(); 199 if (dumptime > 0) { 200 /* 201 * This is an incremental dump tape. 202 */ 203 Vprintf(stdout, "Begin incremental restore\n"); 204 initsymtable(symtbl); 205 extractdirs(1); 206 removeoldleaves(); 207 Vprintf(stdout, "Calculate node updates.\n"); 208 treescan(".", ROOTINO, nodeupdates); 209 findunreflinks(); 210 removeoldnodes(); 211 } else { 212 /* 213 * This is a level zero dump tape. 214 */ 215 Vprintf(stdout, "Begin level 0 restore\n"); 216 initsymtable(NULL); 217 extractdirs(1); 218 Vprintf(stdout, "Calculate extraction list.\n"); 219 treescan(".", ROOTINO, nodeupdates); 220 } 221 createleaves(symtbl); 222 createlinks(); 223 setdirmodes(FORCE); 224 checkrestore(); 225 if (dflag) { 226 Vprintf(stdout, "Verify the directory structure\n"); 227 treescan(".", ROOTINO, verifyfile); 228 } 229 dumpsymtable(symtbl, (long)1); 230 break; 231 /* 232 * Resume an incremental file system restoration. 233 */ 234 case 'R': 235 initsymtable(symtbl); 236 skipmaps(); 237 skipdirs(); 238 createleaves(symtbl); 239 createlinks(); 240 setdirmodes(FORCE); 241 checkrestore(); 242 dumpsymtable(symtbl, (long)1); 243 break; 244 /* 245 * List contents of tape. 246 */ 247 case 't': 248 setup(); 249 extractdirs(0); 250 initsymtable(NULL); 251 while (argc--) { 252 canon(*argv++, name, sizeof name); 253 ino = dirlookup(name); 254 if (ino == 0) 255 continue; 256 treescan(name, ino, listfile); 257 } 258 break; 259 /* 260 * Batch extraction of tape contents. 261 */ 262 case 'x': 263 setup(); 264 extractdirs(1); 265 initsymtable(NULL); 266 while (argc--) { 267 canon(*argv++, name, sizeof name); 268 ino = dirlookup(name); 269 if (ino == 0) 270 continue; 271 if (mflag) 272 pathcheck(name); 273 treescan(name, ino, addfile); 274 } 275 createfiles(); 276 createlinks(); 277 setdirmodes(0); 278 if (dflag) 279 checkrestore(); 280 break; 281 } 282 return (0); 283 } 284 285 static void 286 usage(void) 287 { 288 289 (void)fprintf(stderr, "usage: %s [-chimRrtvxy] [-b blocksize] [-f file] [-s fileno] [file ...]\n", __progname); 290 exit(1); 291 } 292 293 /* 294 * obsolete -- 295 * Change set of key letters and ordered arguments into something 296 * getopt(3) will like. 297 */ 298 static void 299 obsolete(int *argcp, char **argvp[]) 300 { 301 int argc, flags; 302 char *ap, **argv, *flagsp, **nargv, *p; 303 size_t len; 304 305 /* Setup. */ 306 argv = *argvp; 307 argc = *argcp; 308 309 /* Return if no arguments or first argument has leading dash. */ 310 ap = argv[1]; 311 if (argc == 1 || *ap == '-') 312 return; 313 314 /* Allocate space for new arguments. */ 315 if ((*argvp = nargv = calloc(argc + 1, sizeof(char *))) == NULL || 316 (p = flagsp = malloc(strlen(ap) + 2)) == NULL) 317 err(1, NULL); 318 319 *nargv++ = *argv; 320 argv += 2; 321 322 for (flags = 0; *ap; ++ap) { 323 switch (*ap) { 324 case 'b': 325 case 'f': 326 case 's': 327 if (*argv == NULL) { 328 warnx("option requires an argument -- %c", *ap); 329 usage(); 330 } 331 len = strlen(*argv) + 2 + 1; 332 if ((nargv[0] = malloc(len)) == NULL) 333 err(1, NULL); 334 nargv[0][0] = '-'; 335 nargv[0][1] = *ap; 336 (void)strlcpy(&nargv[0][2], *argv, len-2); 337 ++argv; 338 ++nargv; 339 break; 340 default: 341 if (!flags) { 342 *p++ = '-'; 343 flags = 1; 344 } 345 *p++ = *ap; 346 break; 347 } 348 } 349 350 /* Terminate flags. */ 351 if (flags) { 352 *p = '\0'; 353 *nargv++ = flagsp; 354 } else { 355 free(flagsp); 356 } 357 358 /* Copy remaining arguments. */ 359 while ((*nargv++ = *argv++)) 360 ; 361 362 /* Update argument count. */ 363 *argcp = nargv - *argvp - 1; 364 } 365