main.c revision 37906
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. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34#ifndef lint 35static const char copyright[] = 36"@(#) Copyright (c) 1983, 1993\n\ 37 The Regents of the University of California. All rights reserved.\n"; 38#endif /* not lint */ 39 40#ifndef lint 41#if 0 42static char sccsid[] = "@(#)main.c 8.6 (Berkeley) 5/4/95"; 43#endif 44static const char rcsid[] = 45 "$Id$"; 46#endif /* not lint */ 47 48#include <sys/param.h> 49#include <sys/stat.h> 50 51#include <ufs/ufs/dinode.h> 52#include <protocols/dumprestore.h> 53 54#include <err.h> 55#include <stdio.h> 56#include <stdlib.h> 57#include <unistd.h> 58 59#include "pathnames.h" 60#include "restore.h" 61#include "extern.h" 62 63int bflag = 0, cvtflag = 0, dflag = 0, vflag = 0, yflag = 0; 64int hflag = 1, mflag = 1, Nflag = 0; 65int uflag = 0; 66int dokerberos = 0; 67char command = '\0'; 68long dumpnum = 1; 69long volno = 0; 70long ntrec; 71char *dumpmap; 72char *usedinomap; 73ino_t maxino; 74time_t dumptime; 75time_t dumpdate; 76FILE *terminal; 77 78static void obsolete __P((int *, char **[])); 79static void usage __P((void)); 80 81int 82main(argc, argv) 83 int argc; 84 char *argv[]; 85{ 86 int ch; 87 ino_t ino; 88 char *inputdev; 89 char *symtbl = "./restoresymtable"; 90 char *p, name[MAXPATHLEN]; 91 92 /* Temp files should *not* be readable. We set permissions later. */ 93 (void) umask(077); 94 95 if (argc < 2) 96 usage(); 97 98 if ((inputdev = getenv("TAPE")) == NULL) 99 inputdev = _PATH_DEFTAPE; 100 obsolete(&argc, &argv); 101#ifdef KERBEROS 102#define optlist "b:cdf:hikmNRrs:tuvxy" 103#else 104#define optlist "b:cdf:himNRrs:tuvxy" 105#endif 106 while ((ch = getopt(argc, argv, optlist)) != -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#ifdef KERBEROS 130 case 'k': 131 dokerberos = 1; 132 break; 133#endif 134 case 'i': 135 case 'R': 136 case 'r': 137 case 't': 138 case 'x': 139 if (command != '\0') 140 errx(1, 141 "%c and %c options are mutually exclusive", 142 ch, command); 143 command = ch; 144 break; 145 case 'm': 146 mflag = 0; 147 break; 148 case 'N': 149 Nflag = 1; 150 break; 151 case 's': 152 /* Dumpnum (skip to) for multifile dump tapes. */ 153 dumpnum = strtol(optarg, &p, 10); 154 if (*p) 155 errx(1, "illegal dump number -- %s", optarg); 156 if (dumpnum <= 0) 157 errx(1, "dump number must be greater than 0"); 158 break; 159 case 'u': 160 uflag = 1; 161 break; 162 case 'v': 163 vflag = 1; 164 break; 165 case 'y': 166 yflag = 1; 167 break; 168 default: 169 usage(); 170 } 171 argc -= optind; 172 argv += optind; 173 174 if (command == '\0') 175 errx(1, "none of i, R, r, t or x options specified"); 176 177 if (signal(SIGINT, onintr) == SIG_IGN) 178 (void) signal(SIGINT, SIG_IGN); 179 if (signal(SIGTERM, onintr) == SIG_IGN) 180 (void) signal(SIGTERM, SIG_IGN); 181 setlinebuf(stderr); 182 183 setinput(inputdev); 184 185 if (argc == 0) { 186 argc = 1; 187 *--argv = "."; 188 } 189 190 switch (command) { 191 /* 192 * Interactive mode. 193 */ 194 case 'i': 195 setup(); 196 extractdirs(1); 197 initsymtable(NULL); 198 runcmdshell(); 199 break; 200 /* 201 * Incremental restoration of a file system. 202 */ 203 case 'r': 204 setup(); 205 if (dumptime > 0) { 206 /* 207 * This is an incremental dump tape. 208 */ 209 vprintf(stdout, "Begin incremental restore\n"); 210 initsymtable(symtbl); 211 extractdirs(1); 212 removeoldleaves(); 213 vprintf(stdout, "Calculate node updates.\n"); 214 treescan(".", ROOTINO, nodeupdates); 215 findunreflinks(); 216 removeoldnodes(); 217 } else { 218 /* 219 * This is a level zero dump tape. 220 */ 221 vprintf(stdout, "Begin level 0 restore\n"); 222 initsymtable((char *)0); 223 extractdirs(1); 224 vprintf(stdout, "Calculate extraction list.\n"); 225 treescan(".", ROOTINO, nodeupdates); 226 } 227 createleaves(symtbl); 228 createlinks(); 229 setdirmodes(FORCE); 230 checkrestore(); 231 if (dflag) { 232 vprintf(stdout, "Verify the directory structure\n"); 233 treescan(".", ROOTINO, verifyfile); 234 } 235 dumpsymtable(symtbl, (long)1); 236 break; 237 /* 238 * Resume an incremental file system restoration. 239 */ 240 case 'R': 241 initsymtable(symtbl); 242 skipmaps(); 243 skipdirs(); 244 createleaves(symtbl); 245 createlinks(); 246 setdirmodes(FORCE); 247 checkrestore(); 248 dumpsymtable(symtbl, (long)1); 249 break; 250 /* 251 * List contents of tape. 252 */ 253 case 't': 254 setup(); 255 extractdirs(0); 256 initsymtable((char *)0); 257 while (argc--) { 258 canon(*argv++, name, sizeof(name)); 259 ino = dirlookup(name); 260 if (ino == 0) 261 continue; 262 treescan(name, ino, listfile); 263 } 264 break; 265 /* 266 * Batch extraction of tape contents. 267 */ 268 case 'x': 269 setup(); 270 extractdirs(1); 271 initsymtable((char *)0); 272 while (argc--) { 273 canon(*argv++, name, sizeof(name)); 274 ino = dirlookup(name); 275 if (ino == 0) 276 continue; 277 if (mflag) 278 pathcheck(name); 279 treescan(name, ino, addfile); 280 } 281 createfiles(); 282 createlinks(); 283 setdirmodes(0); 284 if (dflag) 285 checkrestore(); 286 break; 287 } 288 done(0); 289 /* NOTREACHED */ 290} 291 292static void 293usage() 294{ 295 (void)fprintf(stderr, "usage:\t%s\n\t%s\n\t%s\n\t%s\n\t%s\n", 296 "restore -i [-chkmuvy] [-b blocksize] [-f file] [-s fileno]", 297 "restore -r [-ckuvy] [-b blocksize] [-f file] [-s fileno]", 298 "restore -R [-ckuvy] [-b blocksize] [-f file] [-s fileno]", 299 "restore -x [-chkmuvy] [-b blocksize] [-f file] [-s fileno] [file ...]", 300 "restore -t [-chkuvy] [-b blocksize] [-f file] [-s fileno] [file ...]"); 301 done(1); 302} 303 304/* 305 * obsolete -- 306 * Change set of key letters and ordered arguments into something 307 * getopt(3) will like. 308 */ 309static void 310obsolete(argcp, argvp) 311 int *argcp; 312 char **argvp[]; 313{ 314 int argc, flags; 315 char *ap, **argv, *flagsp, **nargv, *p; 316 317 /* Setup. */ 318 argv = *argvp; 319 argc = *argcp; 320 321 /* Return if no arguments or first argument has leading dash. */ 322 ap = argv[1]; 323 if (argc == 1 || *ap == '-') 324 return; 325 326 /* Allocate space for new arguments. */ 327 if ((*argvp = nargv = malloc((argc + 1) * sizeof(char *))) == NULL || 328 (p = flagsp = malloc(strlen(ap) + 2)) == NULL) 329 err(1, NULL); 330 331 *nargv++ = *argv; 332 argv += 2, argc -= 2; 333 334 for (flags = 0; *ap; ++ap) { 335 switch (*ap) { 336 case 'b': 337 case 'f': 338 case 's': 339 if (*argv == NULL) { 340 warnx("option requires an argument -- %c", *ap); 341 usage(); 342 } 343 if ((nargv[0] = malloc(strlen(*argv) + 2 + 1)) == NULL) 344 err(1, NULL); 345 nargv[0][0] = '-'; 346 nargv[0][1] = *ap; 347 (void)strcpy(&nargv[0][2], *argv); 348 ++argv; 349 ++nargv; 350 break; 351 default: 352 if (!flags) { 353 *p++ = '-'; 354 flags = 1; 355 } 356 *p++ = *ap; 357 break; 358 } 359 } 360 361 /* Terminate flags. */ 362 if (flags) { 363 *p = '\0'; 364 *nargv++ = flagsp; 365 } 366 367 /* Copy remaining arguments. */ 368 while ((*nargv++ = *argv++)); 369 370 /* Update argument count. */ 371 *argcp = nargv - *argvp - 1; 372} 373