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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 | |
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 1.6 1999/10/13 09:57:21 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 = NULL; | |
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 | ||
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:hikmNRrs:tT:uvxy" | |
129 | #else | |
130 | #define optlist "b:CcdD:f:himNRrs: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 | filesys = optarg; | |
148 | break; | |
149 | case 'T': | |
150 | tmpdir = optarg; | |
151 | break; | |
152 | case 'd': | |
153 | dflag = 1; | |
154 | break; | |
155 | case 'f': | |
156 | inputdev = optarg; | |
157 | break; | |
158 | case 'h': | |
159 | hflag = 0; | |
160 | break; | |
161 | #ifdef KERBEROS | |
162 | case 'k': | |
163 | dokerberos = 1; | |
164 | break; | |
165 | #endif | |
166 | case 'C': | |
167 | case 'i': | |
168 | case 'R': | |
169 | case 'r': | |
170 | case 't': | |
171 | case 'x': | |
172 | if (command != '\0') | |
173 | errx(1, | |
174 | "%c and %c options are mutually exclusive", | |
175 | ch, command); | |
176 | command = ch; | |
177 | break; | |
178 | case 'm': | |
179 | mflag = 0; | |
180 | break; | |
181 | case 'N': | |
182 | Nflag = 1; | |
183 | break; | |
184 | case 's': | |
185 | /* Dumpnum (skip to) for multifile dump tapes. */ | |
186 | dumpnum = strtol(optarg, &p, 10); | |
187 | if (*p) | |
188 | errx(1, "illegal dump number -- %s", optarg); | |
189 | if (dumpnum <= 0) | |
190 | errx(1, "dump number must be greater than 0"); | |
191 | break; | |
192 | case 'u': | |
193 | uflag = 1; | |
194 | break; | |
195 | case 'v': | |
196 | vflag = 1; | |
197 | break; | |
198 | case 'y': | |
199 | yflag = 1; | |
200 | break; | |
201 | default: | |
202 | usage(); | |
203 | } | |
204 | argc -= optind; | |
205 | argv += optind; | |
206 | ||
207 | if (command == '\0') | |
208 | errx(1, "none of C, i, R, r, t or x options specified"); | |
209 | ||
210 | if (signal(SIGINT, onintr) == SIG_IGN) | |
211 | (void) signal(SIGINT, SIG_IGN); | |
212 | if (signal(SIGTERM, onintr) == SIG_IGN) | |
213 | (void) signal(SIGTERM, SIG_IGN); | |
214 | setlinebuf(stderr); | |
215 | ||
216 | atexit(cleanup); | |
217 | ||
218 | setinput(inputdev); | |
219 | ||
220 | if (argc == 0) { | |
221 | argc = 1; | |
222 | *--argv = "."; | |
223 | } | |
224 | ||
225 | switch (command) { | |
226 | /* | |
227 | * Compare contents of tape. | |
228 | */ | |
229 | case 'C': { | |
230 | struct stat stbuf; | |
231 | ||
232 | Vprintf(stdout, "Begin compare restore\n"); | |
233 | compare_ignore_not_found = 0; | |
234 | setup(); | |
235 | printf("filesys = %s\n", filesys); | |
236 | if (stat(filesys, &stbuf) < 0) | |
237 | err(1, "cannot stat directory %s", filesys); | |
238 | if (chdir(filesys) < 0) | |
239 | err(1, "cannot cd to %s", filesys); | |
240 | compare_ignore_not_found = dumptime > 0; | |
241 | initsymtable((char *)0); | |
242 | extractdirs(0); | |
243 | treescan(".", ROOTINO, nodeupdates); | |
244 | compareleaves(); | |
245 | checkrestore(); | |
246 | break; | |
247 | } | |
248 | ||
249 | /* | |
250 | * Interactive mode. | |
251 | */ | |
252 | case 'i': | |
253 | setup(); | |
254 | extractdirs(1); | |
255 | initsymtable(NULL); | |
256 | runcmdshell(); | |
257 | break; | |
258 | /* | |
259 | * Incremental restoration of a file system. | |
260 | */ | |
261 | case 'r': | |
262 | setup(); | |
263 | if (dumptime > 0) { | |
264 | /* | |
265 | * This is an incremental dump tape. | |
266 | */ | |
267 | Vprintf(stdout, "Begin incremental restore\n"); | |
268 | initsymtable(symtbl); | |
269 | extractdirs(1); | |
270 | removeoldleaves(); | |
271 | Vprintf(stdout, "Calculate node updates.\n"); | |
272 | treescan(".", ROOTINO, nodeupdates); | |
273 | findunreflinks(); | |
274 | removeoldnodes(); | |
275 | } else { | |
276 | /* | |
277 | * This is a level zero dump tape. | |
278 | */ | |
279 | Vprintf(stdout, "Begin level 0 restore\n"); | |
280 | initsymtable((char *)0); | |
281 | extractdirs(1); | |
282 | Vprintf(stdout, "Calculate extraction list.\n"); | |
283 | treescan(".", ROOTINO, nodeupdates); | |
284 | } | |
285 | createleaves(symtbl); | |
286 | createlinks(); | |
287 | setdirmodes(FORCE); | |
288 | checkrestore(); | |
289 | if (dflag) { | |
290 | Vprintf(stdout, "Verify the directory structure\n"); | |
291 | treescan(".", ROOTINO, verifyfile); | |
292 | } | |
293 | dumpsymtable(symtbl, (long)1); | |
294 | break; | |
295 | /* | |
296 | * Resume an incremental file system restoration. | |
297 | */ | |
298 | case 'R': | |
299 | initsymtable(symtbl); | |
300 | skipmaps(); | |
301 | skipdirs(); | |
302 | createleaves(symtbl); | |
303 | createlinks(); | |
304 | setdirmodes(FORCE); | |
305 | checkrestore(); | |
306 | dumpsymtable(symtbl, (long)1); | |
307 | break; | |
308 | /* | |
309 | * List contents of tape. | |
310 | */ | |
311 | case 't': | |
312 | setup(); | |
313 | extractdirs(0); | |
314 | initsymtable((char *)0); | |
315 | while (argc--) { | |
316 | canon(*argv++, name, sizeof(name)); | |
317 | ino = dirlookup(name); | |
318 | if (ino == 0) | |
319 | continue; | |
320 | treescan(name, ino, listfile); | |
321 | } | |
322 | break; | |
323 | /* | |
324 | * Batch extraction of tape contents. | |
325 | */ | |
326 | case 'x': | |
327 | setup(); | |
328 | extractdirs(1); | |
329 | initsymtable((char *)0); | |
330 | while (argc--) { | |
331 | canon(*argv++, name, sizeof(name)); | |
332 | ino = dirlookup(name); | |
333 | if (ino == 0) | |
334 | continue; | |
335 | if (mflag) | |
336 | pathcheck(name); | |
337 | treescan(name, ino, addfile); | |
338 | } | |
339 | createfiles(); | |
340 | createlinks(); | |
341 | setdirmodes(0); | |
342 | if (dflag) | |
343 | checkrestore(); | |
344 | break; | |
345 | } | |
346 | exit(0); | |
347 | /* NOTREACHED */ | |
348 | return 0; /* gcc shut up */ | |
349 | } | |
350 | ||
351 | static void | |
352 | usage(void) | |
353 | { | |
354 | #ifdef KERBEROS | |
355 | #define kerbflag "k" | |
356 | #else | |
357 | #define kerbflag | |
358 | #endif | |
359 | (void)fprintf(stderr, | |
360 | "%s %s\n", __progname, _DUMP_VERSION); | |
361 | (void)fprintf(stderr, | |
362 | "usage:\t%s%s\n\t%s%s\n\t%s%s\n\t%s%s\n\t%s%s\n", | |
363 | __progname, " -i [-ch" kerbflag "muvy] [-b blocksize] [-f file] [-s fileno]", | |
364 | __progname, " -r [-c" kerbflag "uvy] [-b blocksize] [-f file] [-s fileno]", | |
365 | __progname, " -R [-c" kerbflag "uvy] [-b blocksize] [-f file] [-s fileno]", | |
366 | __progname, " -x [-ch" kerbflag "muvy] [-b blocksize] [-f file] [-s fileno] [file ...]", | |
367 | __progname, " -t [-ch" kerbflag "kuvy] [-b blocksize] [-f file] [-s fileno] [file ...]"); | |
368 | exit(1); | |
369 | } | |
370 | ||
371 | /* | |
372 | * obsolete -- | |
373 | * Change set of key letters and ordered arguments into something | |
374 | * getopt(3) will like. | |
375 | */ | |
376 | static void | |
377 | obsolete(int *argcp, char **argvp[]) | |
378 | { | |
379 | int argc, flags; | |
380 | char *ap, **argv, *flagsp = NULL, **nargv, *p = NULL; | |
381 | ||
382 | /* Setup. */ | |
383 | argv = *argvp; | |
384 | argc = *argcp; | |
385 | ||
386 | /* Return if no arguments or first argument has leading dash. */ | |
387 | ap = argv[1]; | |
388 | if (argc == 1 || *ap == '-') | |
389 | return; | |
390 | ||
391 | /* Allocate space for new arguments. */ | |
392 | if ((*argvp = nargv = malloc((argc + 1) * sizeof(char *))) == NULL || | |
393 | (p = flagsp = malloc(strlen(ap) + 2)) == NULL) | |
394 | err(1, "malloc args"); | |
395 | ||
396 | *nargv++ = *argv; | |
397 | argv += 2, argc -= 2; | |
398 | ||
399 | for (flags = 0; *ap; ++ap) { | |
400 | switch (*ap) { | |
401 | case 'b': | |
402 | case 'f': | |
403 | case 's': | |
404 | if (*argv == NULL) { | |
405 | warnx("option requires an argument -- %c", *ap); | |
406 | usage(); | |
407 | } | |
408 | if ((nargv[0] = malloc(strlen(*argv) + 2 + 1)) == NULL) | |
409 | err(1, "malloc arg"); | |
410 | nargv[0][0] = '-'; | |
411 | nargv[0][1] = *ap; | |
412 | (void)strcpy(&nargv[0][2], *argv); | |
413 | ++argv; | |
414 | ++nargv; | |
415 | break; | |
416 | default: | |
417 | if (!flags) { | |
418 | *p++ = '-'; | |
419 | flags = 1; | |
420 | } | |
421 | *p++ = *ap; | |
422 | break; | |
423 | } | |
424 | } | |
425 | ||
426 | /* Terminate flags. */ | |
427 | if (flags) { | |
428 | *p = '\0'; | |
429 | *nargv++ = flagsp; | |
430 | } | |
431 | ||
432 | /* Copy remaining arguments. */ | |
433 | while ((*nargv++ = *argv++)); | |
434 | ||
435 | /* Update argument count. */ | |
436 | *argcp = nargv - *argvp - 1; | |
437 | } |