main.c revision 1.13
1 /* $NetBSD: main.c,v 1.13 1997/07/01 05:37:51 lukem 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. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #ifndef lint 37 static char copyright[] = 38 "@(#) Copyright (c) 1983, 1993\n\ 39 The Regents of the University of California. All rights reserved.\n"; 40 #endif /* not lint */ 41 42 #ifndef lint 43 #if 0 44 static char sccsid[] = "@(#)main.c 8.3 (Berkeley) 9/13/94"; 45 #else 46 static char rcsid[] = "$NetBSD: main.c,v 1.13 1997/07/01 05:37:51 lukem Exp $"; 47 #endif 48 #endif /* not lint */ 49 50 #include <sys/param.h> 51 #include <sys/time.h> 52 53 #include <ufs/ffs/fs.h> 54 #include <ufs/ufs/dinode.h> 55 #include <protocols/dumprestore.h> 56 57 #include <err.h> 58 #include <errno.h> 59 #include <paths.h> 60 #include <signal.h> 61 #include <stdio.h> 62 #include <stdlib.h> 63 #include <string.h> 64 65 #include "restore.h" 66 #include "extern.h" 67 68 int bflag = 0, cvtflag = 0, dflag = 0, vflag = 0, yflag = 0; 69 int hflag = 1, mflag = 1, Nflag = 0; 70 char command = '\0'; 71 long dumpnum = 1; 72 long volno = 0; 73 long ntrec; 74 char *dumpmap; 75 char *usedinomap; 76 ino_t maxino; 77 time_t dumptime; 78 time_t dumpdate; 79 FILE *terminal; 80 char *tmpdir; 81 uid_t uid; /* real uid */ 82 uid_t euid; /* effective uid */ 83 84 static void obsolete __P((int *, char **[])); 85 static void usage __P((void)); 86 87 int 88 main(argc, argv) 89 int argc; 90 char *argv[]; 91 { 92 int ch; 93 ino_t ino; 94 char *inputdev; 95 char *symtbl = "./restoresymtable"; 96 char *p, name[MAXPATHLEN]; 97 98 uid = getuid(); 99 euid = geteuid(); 100 (void) seteuid(uid); 101 102 if (argc < 2) 103 usage(); 104 105 if ((inputdev = getenv("TAPE")) == NULL) 106 inputdev = _PATH_DEFTAPE; 107 if ((tmpdir = getenv("TMPDIR")) == NULL) 108 tmpdir = _PATH_TMP; 109 obsolete(&argc, &argv); 110 while ((ch = getopt(argc, argv, "b:cdf:himNRrs:tvxy")) != EOF) 111 switch(ch) { 112 case 'b': 113 /* Change default tape blocksize. */ 114 bflag = 1; 115 ntrec = strtol(optarg, &p, 10); 116 if (*p) 117 errx(1, "illegal blocksize -- %s", optarg); 118 if (ntrec <= 0) 119 errx(1, "block size must be greater than 0"); 120 break; 121 case 'c': 122 cvtflag = 1; 123 break; 124 case 'd': 125 dflag = 1; 126 break; 127 case 'f': 128 inputdev = optarg; 129 break; 130 case 'h': 131 hflag = 0; 132 break; 133 case 'i': 134 case 'R': 135 case 'r': 136 case 't': 137 case 'x': 138 if (command != '\0') 139 errx(1, 140 "%c and %c options are mutually exclusive", 141 ch, command); 142 command = ch; 143 break; 144 case 'm': 145 mflag = 0; 146 break; 147 case 'N': 148 Nflag = 1; 149 break; 150 case 's': 151 /* Dumpnum (skip to) for multifile dump tapes. */ 152 dumpnum = strtol(optarg, &p, 10); 153 if (*p) 154 errx(1, "illegal dump number -- %s", optarg); 155 if (dumpnum <= 0) 156 errx(1, "dump number must be greater than 0"); 157 break; 158 case 'v': 159 vflag = 1; 160 break; 161 case 'y': 162 yflag = 1; 163 break; 164 default: 165 usage(); 166 } 167 argc -= optind; 168 argv += optind; 169 170 if (command == '\0') 171 errx(1, "none of i, R, r, t or x options specified"); 172 173 if (signal(SIGINT, onintr) == SIG_IGN) 174 (void) signal(SIGINT, SIG_IGN); 175 if (signal(SIGTERM, onintr) == SIG_IGN) 176 (void) signal(SIGTERM, SIG_IGN); 177 setlinebuf(stderr); 178 179 atexit(cleanup); 180 181 setinput(inputdev); 182 183 if (argc == 0) { 184 argc = 1; 185 *--argv = "."; 186 } 187 188 switch (command) { 189 /* 190 * Interactive mode. 191 */ 192 case 'i': 193 setup(); 194 extractdirs(1); 195 initsymtable(NULL); 196 runcmdshell(); 197 break; 198 /* 199 * Incremental restoration of a file system. 200 */ 201 case 'r': 202 setup(); 203 if (dumptime > 0) { 204 /* 205 * This is an incremental dump tape. 206 */ 207 vprintf(stdout, "Begin incremental restore\n"); 208 initsymtable(symtbl); 209 extractdirs(1); 210 removeoldleaves(); 211 vprintf(stdout, "Calculate node updates.\n"); 212 treescan(".", ROOTINO, nodeupdates); 213 findunreflinks(); 214 removeoldnodes(); 215 } else { 216 /* 217 * This is a level zero dump tape. 218 */ 219 vprintf(stdout, "Begin level 0 restore\n"); 220 initsymtable((char *)0); 221 extractdirs(1); 222 vprintf(stdout, "Calculate extraction list.\n"); 223 treescan(".", ROOTINO, nodeupdates); 224 } 225 createleaves(symtbl); 226 createlinks(); 227 setdirmodes(FORCE); 228 checkrestore(); 229 if (dflag) { 230 vprintf(stdout, "Verify the directory structure\n"); 231 treescan(".", ROOTINO, verifyfile); 232 } 233 dumpsymtable(symtbl, (long)1); 234 break; 235 /* 236 * Resume an incremental file system restoration. 237 */ 238 case 'R': 239 initsymtable(symtbl); 240 skipmaps(); 241 skipdirs(); 242 createleaves(symtbl); 243 createlinks(); 244 setdirmodes(FORCE); 245 checkrestore(); 246 dumpsymtable(symtbl, (long)1); 247 break; 248 /* 249 * List contents of tape. 250 */ 251 case 't': 252 setup(); 253 extractdirs(0); 254 initsymtable((char *)0); 255 while (argc--) { 256 canon(*argv++, name); 257 ino = dirlookup(name); 258 if (ino == 0) 259 continue; 260 treescan(name, ino, listfile); 261 } 262 break; 263 /* 264 * Batch extraction of tape contents. 265 */ 266 case 'x': 267 setup(); 268 extractdirs(1); 269 initsymtable((char *)0); 270 while (argc--) { 271 canon(*argv++, name); 272 ino = dirlookup(name); 273 if (ino == 0) 274 continue; 275 if (mflag) 276 pathcheck(name); 277 treescan(name, ino, addfile); 278 } 279 createfiles(); 280 createlinks(); 281 setdirmodes(0); 282 if (dflag) 283 checkrestore(); 284 break; 285 } 286 exit(0); 287 /* NOTREACHED */ 288 } 289 290 static void 291 usage() 292 { 293 294 (void)fprintf(stderr, "usage: restore -i [-chmvy] [-b blocksize] [-f file] [-s fileno]\n"); 295 (void)fprintf(stderr, " restore -R [-cvy] [-b blocksize] [-f file] [-s fileno]\n"); 296 (void)fprintf(stderr, " restore -r [-cvy] [-b blocksize] [-f file] [-s fileno]\n"); 297 (void)fprintf(stderr, " restore -t [-chvy] [-b blocksize] [-f file] [-s fileno] [file ...]\n"); 298 (void)fprintf(stderr, " restore -x [-chmvy] [-b blocksize] [-f file] [-s fileno] [file ...]\n"); 299 exit(1); 300 } 301 302 /* 303 * obsolete -- 304 * Change set of key letters and ordered arguments into something 305 * getopt(3) will like. 306 */ 307 static void 308 obsolete(argcp, argvp) 309 int *argcp; 310 char **argvp[]; 311 { 312 int argc, flags; 313 char *ap, **argv, *flagsp, **nargv, *p; 314 315 /* Setup. */ 316 argv = *argvp; 317 argc = *argcp; 318 319 /* Return if no arguments or first argument has leading dash. */ 320 ap = argv[1]; 321 if (argc == 1 || *ap == '-') 322 return; 323 324 /* Allocate space for new arguments. */ 325 if ((*argvp = nargv = malloc((argc + 1) * sizeof(char *))) == NULL || 326 (p = flagsp = malloc(strlen(ap) + 2)) == NULL) 327 err(1, NULL); 328 329 *nargv++ = *argv; 330 argv += 2; 331 332 for (flags = 0; *ap; ++ap) { 333 switch (*ap) { 334 case 'b': 335 case 'f': 336 case 's': 337 if (*argv == NULL) { 338 warnx("option requires an argument -- %c", *ap); 339 usage(); 340 } 341 if ((nargv[0] = malloc(strlen(*argv) + 2 + 1)) == NULL) 342 err(1, NULL); 343 nargv[0][0] = '-'; 344 nargv[0][1] = *ap; 345 (void)strcpy(&nargv[0][2], *argv); 346 ++argv; 347 ++nargv; 348 break; 349 default: 350 if (!flags) { 351 *p++ = '-'; 352 flags = 1; 353 } 354 *p++ = *ap; 355 break; 356 } 357 } 358 359 /* Terminate flags. */ 360 if (flags) { 361 *p = '\0'; 362 *nargv++ = flagsp; 363 } 364 365 /* Copy remaining arguments. */ 366 while (*nargv++ = *argv++); 367 368 /* Update argument count. */ 369 *argcp = nargv - *argvp - 1; 370 } 371
Indexes created Wed Sep 24 14:09:57 GMT 2025