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1 | /* | |
2 | * Ported to Linux's Second Extended File System as part of the | |
3 | * dump and restore backup suit | |
4 | * Remy Card <card@Linux.EU.Org>, 1994-1997 | |
5 | * Stelian Pop <pop@cybercable.fr>, 1999-2000 | |
6 | */ | |
7 | ||
8 | /* | |
9 | * Copyright (c) 1983, 1993 | |
10 | * The Regents of the University of California. All rights reserved. | |
11 | * | |
12 | * Redistribution and use in source and binary forms, with or without | |
13 | * modification, are permitted provided that the following conditions | |
14 | * are met: | |
15 | * 1. Redistributions of source code must retain the above copyright | |
16 | * notice, this list of conditions and the following disclaimer. | |
17 | * 2. Redistributions in binary form must reproduce the above copyright | |
18 | * notice, this list of conditions and the following disclaimer in the | |
19 | * documentation and/or other materials provided with the distribution. | |
20 | * 3. All advertising materials mentioning features or use of this software | |
21 | * must display the following acknowledgement: | |
22 | * This product includes software developed by the University of | |
23 | * California, Berkeley and its contributors. | |
24 | * 4. Neither the name of the University nor the names of its contributors | |
25 | * may be used to endorse or promote products derived from this software | |
26 | * without specific prior written permission. | |
27 | * | |
28 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
29 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
30 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
31 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
32 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
33 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
34 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
35 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
36 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
37 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
38 | * SUCH DAMAGE. | |
39 | */ | |
40 | ||
41 | #ifndef lint | |
42 | static const char rcsid[] = | |
43 | "$Id: main.c,v 1.9 2000/03/02 11:34:51 stelian Exp $"; | |
44 | #endif /* not lint */ | |
45 | ||
46 | #include <sys/param.h> | |
47 | #include <sys/stat.h> | |
48 | #include <errno.h> | |
49 | ||
50 | #ifdef __linux__ | |
51 | #include <linux/ext2_fs.h> | |
52 | #include <bsdcompat.h> | |
53 | #include <signal.h> | |
54 | #include <string.h> | |
55 | #else /* __linux__ */ | |
56 | #include <ufs/ufs/dinode.h> | |
57 | #endif /* __linux__ */ | |
58 | #include <protocols/dumprestore.h> | |
59 | ||
60 | #include <compaterr.h> | |
61 | #include <stdio.h> | |
62 | #include <stdlib.h> | |
63 | #include <unistd.h> | |
64 | ||
65 | #ifdef __linux__ | |
66 | #include <ext2fs/ext2fs.h> | |
67 | #include <getopt.h> | |
68 | #endif | |
69 | ||
70 | #include "pathnames.h" | |
71 | #include "restore.h" | |
72 | #include "extern.h" | |
73 | ||
74 | int bflag = 0, cvtflag = 0, dflag = 0, vflag = 0, yflag = 0; | |
75 | int hflag = 1, mflag = 1, Nflag = 0; | |
76 | int uflag = 0; | |
77 | int dokerberos = 0; | |
78 | char command = '\0'; | |
79 | long dumpnum = 1; | |
80 | long volno = 0; | |
81 | long ntrec; | |
82 | char *dumpmap; | |
83 | char *usedinomap; | |
84 | ino_t maxino; | |
85 | time_t dumptime; | |
86 | time_t dumpdate; | |
87 | FILE *terminal; | |
88 | char *tmpdir; | |
89 | int compare_ignore_not_found; | |
90 | char filesys[NAMELEN]; | |
91 | ||
92 | #ifdef __linux__ | |
93 | char *__progname; | |
94 | #endif | |
95 | ||
96 | static void obsolete __P((int *, char **[])); | |
97 | static void usage __P((void)); | |
98 | ||
99 | int | |
100 | main(int argc, char *argv[]) | |
101 | { | |
102 | int ch; | |
103 | ino_t ino; | |
104 | char *inputdev = _PATH_DEFTAPE; | |
105 | char *symtbl = "./restoresymtable"; | |
106 | char *p, name[MAXPATHLEN]; | |
107 | ||
108 | /* Temp files should *not* be readable. We set permissions later. */ | |
109 | (void) umask(077); | |
110 | filesys[0] = '\0'; | |
111 | #ifdef __linux__ | |
112 | __progname = argv[0]; | |
113 | #endif | |
114 | ||
115 | if (argc < 2) | |
116 | usage(); | |
117 | ||
118 | if ((inputdev = getenv("TAPE")) == NULL) | |
119 | inputdev = _PATH_DEFTAPE; | |
120 | if ((tmpdir = getenv("TMPDIR")) == NULL) | |
121 | tmpdir = _PATH_TMP; | |
122 | if ((tmpdir = strdup(tmpdir)) == NULL) | |
123 | err(1, "malloc tmpdir"); | |
124 | for (p = tmpdir + strlen(tmpdir) - 1; p >= tmpdir && *p == '/'; p--) | |
125 | ; | |
126 | obsolete(&argc, &argv); | |
127 | #ifdef KERBEROS | |
128 | #define optlist "b:CcdD:f:hikmMNRrs:tT:uvxy" | |
129 | #else | |
130 | #define optlist "b:CcdD:f:himMNRrs:tT:uvxy" | |
131 | #endif | |
132 | while ((ch = getopt(argc, argv, optlist)) != -1) | |
133 | switch(ch) { | |
134 | case 'b': | |
135 | /* Change default tape blocksize. */ | |
136 | bflag = 1; | |
137 | ntrec = strtol(optarg, &p, 10); | |
138 | if (*p) | |
139 | errx(1, "illegal blocksize -- %s", optarg); | |
140 | if (ntrec <= 0) | |
141 | errx(1, "block size must be greater than 0"); | |
142 | break; | |
143 | case 'c': | |
144 | cvtflag = 1; | |
145 | break; | |
146 | case 'D': | |
147 | strncpy(filesys, optarg, NAMELEN); | |
148 | filesys[NAMELEN - 1] = '\0'; | |
149 | break; | |
150 | case 'T': | |
151 | tmpdir = optarg; | |
152 | break; | |
153 | case 'd': | |
154 | dflag = 1; | |
155 | break; | |
156 | case 'f': | |
157 | inputdev = optarg; | |
158 | break; | |
159 | case 'h': | |
160 | hflag = 0; | |
161 | break; | |
162 | #ifdef KERBEROS | |
163 | case 'k': | |
164 | dokerberos = 1; | |
165 | break; | |
166 | #endif | |
167 | case 'C': | |
168 | case 'i': | |
169 | case 'R': | |
170 | case 'r': | |
171 | case 't': | |
172 | case 'x': | |
173 | if (command != '\0') | |
174 | errx(1, | |
175 | "%c and %c options are mutually exclusive", | |
176 | ch, command); | |
177 | command = ch; | |
178 | break; | |
179 | case 'm': | |
180 | mflag = 0; | |
181 | break; | |
182 | case 'M': | |
183 | Mflag = 1; | |
184 | break; | |
185 | case 'N': | |
186 | Nflag = 1; | |
187 | break; | |
188 | case 's': | |
189 | /* Dumpnum (skip to) for multifile dump tapes. */ | |
190 | dumpnum = strtol(optarg, &p, 10); | |
191 | if (*p) | |
192 | errx(1, "illegal dump number -- %s", optarg); | |
193 | if (dumpnum <= 0) | |
194 | errx(1, "dump number must be greater than 0"); | |
195 | break; | |
196 | case 'u': | |
197 | uflag = 1; | |
198 | break; | |
199 | case 'v': | |
200 | vflag = 1; | |
201 | break; | |
202 | case 'y': | |
203 | yflag = 1; | |
204 | break; | |
205 | default: | |
206 | usage(); | |
207 | } | |
208 | argc -= optind; | |
209 | argv += optind; | |
210 | ||
211 | if (command == '\0') | |
212 | errx(1, "none of C, i, R, r, t or x options specified"); | |
213 | ||
214 | if (signal(SIGINT, onintr) == SIG_IGN) | |
215 | (void) signal(SIGINT, SIG_IGN); | |
216 | if (signal(SIGTERM, onintr) == SIG_IGN) | |
217 | (void) signal(SIGTERM, SIG_IGN); | |
218 | setlinebuf(stderr); | |
219 | ||
220 | atexit(cleanup); | |
221 | ||
222 | setinput(inputdev); | |
223 | ||
224 | if (argc == 0) { | |
225 | argc = 1; | |
226 | *--argv = "."; | |
227 | } | |
228 | ||
229 | switch (command) { | |
230 | /* | |
231 | * Compare contents of tape. | |
232 | */ | |
233 | case 'C': { | |
234 | struct stat stbuf; | |
235 | ||
236 | Vprintf(stdout, "Begin compare restore\n"); | |
237 | compare_ignore_not_found = 0; | |
238 | setup(); | |
239 | printf("filesys = %s\n", filesys); | |
240 | if (stat(filesys, &stbuf) < 0) | |
241 | err(1, "cannot stat directory %s", filesys); | |
242 | if (chdir(filesys) < 0) | |
243 | err(1, "cannot cd to %s", filesys); | |
244 | compare_ignore_not_found = dumptime > 0; | |
245 | initsymtable((char *)0); | |
246 | extractdirs(0); | |
247 | treescan(".", ROOTINO, nodeupdates); | |
248 | compareleaves(); | |
249 | checkrestore(); | |
250 | break; | |
251 | } | |
252 | ||
253 | /* | |
254 | * Interactive mode. | |
255 | */ | |
256 | case 'i': | |
257 | setup(); | |
258 | extractdirs(1); | |
259 | initsymtable(NULL); | |
260 | runcmdshell(); | |
261 | break; | |
262 | /* | |
263 | * Incremental restoration of a file system. | |
264 | */ | |
265 | case 'r': | |
266 | setup(); | |
267 | if (dumptime > 0) { | |
268 | /* | |
269 | * This is an incremental dump tape. | |
270 | */ | |
271 | Vprintf(stdout, "Begin incremental restore\n"); | |
272 | initsymtable(symtbl); | |
273 | extractdirs(1); | |
274 | removeoldleaves(); | |
275 | Vprintf(stdout, "Calculate node updates.\n"); | |
276 | treescan(".", ROOTINO, nodeupdates); | |
277 | findunreflinks(); | |
278 | removeoldnodes(); | |
279 | } else { | |
280 | /* | |
281 | * This is a level zero dump tape. | |
282 | */ | |
283 | Vprintf(stdout, "Begin level 0 restore\n"); | |
284 | initsymtable((char *)0); | |
285 | extractdirs(1); | |
286 | Vprintf(stdout, "Calculate extraction list.\n"); | |
287 | treescan(".", ROOTINO, nodeupdates); | |
288 | } | |
289 | createleaves(symtbl); | |
290 | createlinks(); | |
291 | setdirmodes(FORCE); | |
292 | checkrestore(); | |
293 | if (dflag) { | |
294 | Vprintf(stdout, "Verify the directory structure\n"); | |
295 | treescan(".", ROOTINO, verifyfile); | |
296 | } | |
297 | dumpsymtable(symtbl, (long)1); | |
298 | break; | |
299 | /* | |
300 | * Resume an incremental file system restoration. | |
301 | */ | |
302 | case 'R': | |
303 | initsymtable(symtbl); | |
304 | skipmaps(); | |
305 | skipdirs(); | |
306 | createleaves(symtbl); | |
307 | createlinks(); | |
308 | setdirmodes(FORCE); | |
309 | checkrestore(); | |
310 | dumpsymtable(symtbl, (long)1); | |
311 | break; | |
312 | /* | |
313 | * List contents of tape. | |
314 | */ | |
315 | case 't': | |
316 | setup(); | |
317 | extractdirs(0); | |
318 | initsymtable((char *)0); | |
319 | while (argc--) { | |
320 | canon(*argv++, name, sizeof(name)); | |
321 | ino = dirlookup(name); | |
322 | if (ino == 0) | |
323 | continue; | |
324 | treescan(name, ino, listfile); | |
325 | } | |
326 | break; | |
327 | /* | |
328 | * Batch extraction of tape contents. | |
329 | */ | |
330 | case 'x': | |
331 | setup(); | |
332 | extractdirs(1); | |
333 | initsymtable((char *)0); | |
334 | while (argc--) { | |
335 | canon(*argv++, name, sizeof(name)); | |
336 | ino = dirlookup(name); | |
337 | if (ino == 0) | |
338 | continue; | |
339 | if (mflag) | |
340 | pathcheck(name); | |
341 | treescan(name, ino, addfile); | |
342 | } | |
343 | createfiles(); | |
344 | createlinks(); | |
345 | setdirmodes(0); | |
346 | if (dflag) | |
347 | checkrestore(); | |
348 | break; | |
349 | } | |
350 | exit(0); | |
351 | /* NOTREACHED */ | |
352 | return 0; /* gcc shut up */ | |
353 | } | |
354 | ||
355 | static void | |
356 | usage(void) | |
357 | { | |
358 | #ifdef KERBEROS | |
359 | #define kerbflag "k" | |
360 | #else | |
361 | #define kerbflag | |
362 | #endif | |
363 | (void)fprintf(stderr, | |
364 | "%s %s\n", __progname, _DUMP_VERSION); | |
365 | (void)fprintf(stderr, | |
366 | "usage:\t%s%s\n\t%s%s\n\t%s%s\n\t%s%s\n\t%s%s\n", | |
367 | __progname, " -i [-ch" kerbflag "mMuvy] [-b blocksize] [-f file] [-s fileno]", | |
368 | __progname, " -r [-c" kerbflag "Muvy] [-b blocksize] [-f file] [-s fileno]", | |
369 | __progname, " -R [-c" kerbflag "Muvy] [-b blocksize] [-f file] [-s fileno]", | |
370 | __progname, " -x [-ch" kerbflag "mMuvy] [-b blocksize] [-f file] [-s fileno] [file ...]", | |
371 | __progname, " -t [-ch" kerbflag "Muvy] [-b blocksize] [-f file] [-s fileno] [file ...]"); | |
372 | exit(1); | |
373 | } | |
374 | ||
375 | /* | |
376 | * obsolete -- | |
377 | * Change set of key letters and ordered arguments into something | |
378 | * getopt(3) will like. | |
379 | */ | |
380 | static void | |
381 | obsolete(int *argcp, char **argvp[]) | |
382 | { | |
383 | int argc, flags; | |
384 | char *ap, **argv, *flagsp = NULL, **nargv, *p = NULL; | |
385 | ||
386 | /* Setup. */ | |
387 | argv = *argvp; | |
388 | argc = *argcp; | |
389 | ||
390 | /* Return if no arguments or first argument has leading dash. */ | |
391 | ap = argv[1]; | |
392 | if (argc == 1 || *ap == '-') | |
393 | return; | |
394 | ||
395 | /* Allocate space for new arguments. */ | |
396 | if ((*argvp = nargv = malloc((argc + 1) * sizeof(char *))) == NULL || | |
397 | (p = flagsp = malloc(strlen(ap) + 2)) == NULL) | |
398 | err(1, "malloc args"); | |
399 | ||
400 | *nargv++ = *argv; | |
401 | argv += 2, argc -= 2; | |
402 | ||
403 | for (flags = 0; *ap; ++ap) { | |
404 | switch (*ap) { | |
405 | case 'b': | |
406 | case 'D': | |
407 | case 'f': | |
408 | case 's': | |
409 | case 'T': | |
410 | if (*argv == NULL) { | |
411 | warnx("option requires an argument -- %c", *ap); | |
412 | usage(); | |
413 | } | |
414 | if ((nargv[0] = malloc(strlen(*argv) + 2 + 1)) == NULL) | |
415 | err(1, "malloc arg"); | |
416 | nargv[0][0] = '-'; | |
417 | nargv[0][1] = *ap; | |
418 | (void)strcpy(&nargv[0][2], *argv); | |
419 | ++argv; | |
420 | ++nargv; | |
421 | break; | |
422 | default: | |
423 | if (!flags) { | |
424 | *p++ = '-'; | |
425 | flags = 1; | |
426 | } | |
427 | *p++ = *ap; | |
428 | break; | |
429 | } | |
430 | } | |
431 | ||
432 | /* Terminate flags. */ | |
433 | if (flags) { | |
434 | *p = '\0'; | |
435 | *nargv++ = flagsp; | |
436 | } | |
437 | ||
438 | /* Copy remaining arguments. */ | |
439 | while ((*nargv++ = *argv++)); | |
440 | ||
441 | /* Update argument count. */ | |
442 | *argcp = nargv - *argvp - 1; | |
443 | } |