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3381c4fc WJ |
1 | /*- |
2 | * Copyright (c) 1980, 1991 The Regents of the University of California. | |
3 | * 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 | |
35 | char copyright[] = | |
36 | "@(#) Copyright (c) 1980, 1991 The Regents of the University of California.\n\ | |
37 | All rights reserved.\n"; | |
38 | #endif /* not lint */ | |
39 | ||
40 | #ifndef lint | |
41 | static char sccsid[] = "@(#)dumpmain.c 5.16 (Berkeley) 4/24/91"; | |
42 | #endif /* not lint */ | |
43 | ||
44 | #include <sys/param.h> | |
45 | #include <ufs/dir.h> | |
46 | #include <ufs/dinode.h> | |
47 | #include <ufs/fs.h> | |
48 | #include <protocols/dumprestore.h> | |
49 | #include <signal.h> | |
50 | #ifdef __STDC__ | |
51 | #include <time.h> | |
52 | #endif | |
53 | #include <fcntl.h> | |
54 | #include <fstab.h> | |
55 | #include <stdio.h> | |
56 | #ifdef __STDC__ | |
57 | #include <unistd.h> | |
58 | #include <stdlib.h> | |
59 | #include <string.h> | |
60 | #endif | |
61 | #include "dump.h" | |
62 | #include "pathnames.h" | |
63 | ||
64 | int notify = 0; /* notify operator flag */ | |
65 | int blockswritten = 0; /* number of blocks written on current tape */ | |
66 | int tapeno = 0; /* current tape number */ | |
67 | int density = 0; /* density in bytes/0.1" */ | |
68 | int ntrec = NTREC; /* # tape blocks in each tape record */ | |
69 | int cartridge = 0; /* Assume non-cartridge tape */ | |
70 | long dev_bsize = 1; /* recalculated below */ | |
71 | long blocksperfile; /* output blocks per file */ | |
72 | #ifdef RDUMP | |
73 | char *host; | |
74 | int rmthost(); | |
75 | #endif | |
76 | ||
77 | main(argc, argv) | |
78 | int argc; | |
79 | char **argv; | |
80 | { | |
81 | register ino_t ino; | |
82 | register int dirty; | |
83 | register struct dinode *dp; | |
84 | register struct fstab *dt; | |
85 | register char *map; | |
86 | register char *cp; | |
87 | int i, anydirskipped, bflag = 0; | |
88 | float fetapes; | |
89 | ino_t maxino; | |
90 | ||
91 | time(&(spcl.c_date)); | |
92 | ||
93 | tsize = 0; /* Default later, based on 'c' option for cart tapes */ | |
94 | tape = _PATH_DEFTAPE; | |
95 | dumpdates = _PATH_DUMPDATES; | |
96 | temp = _PATH_DTMP; | |
97 | if (TP_BSIZE / DEV_BSIZE == 0 || TP_BSIZE % DEV_BSIZE != 0) | |
98 | quit("TP_BSIZE must be a multiple of DEV_BSIZE\n"); | |
99 | level = '0'; | |
100 | argv++; | |
101 | argc -= 2; | |
102 | for (cp = *argv++; *cp; cp++) { | |
103 | switch (*cp) { | |
104 | case '-': | |
105 | continue; | |
106 | ||
107 | case 'w': | |
108 | lastdump('w'); /* tell us only what has to be done */ | |
109 | exit(0); | |
110 | ||
111 | case 'W': /* what to do */ | |
112 | lastdump('W'); /* tell us state of what is done */ | |
113 | exit(0); /* do nothing else */ | |
114 | ||
115 | case 'f': /* output file */ | |
116 | if (argc < 1) | |
117 | break; | |
118 | tape = *argv++; | |
119 | argc--; | |
120 | continue; | |
121 | ||
122 | case 'd': /* density, in bits per inch */ | |
123 | if (argc < 1) | |
124 | break; | |
125 | density = atoi(*argv) / 10; | |
126 | if (density < 1) { | |
127 | fprintf(stderr, "bad density \"%s\"\n", *argv); | |
128 | Exit(X_ABORT); | |
129 | } | |
130 | argc--; | |
131 | argv++; | |
132 | if (density >= 625 && !bflag) | |
133 | ntrec = HIGHDENSITYTREC; | |
134 | continue; | |
135 | ||
136 | case 's': /* tape size, feet */ | |
137 | if (argc < 1) | |
138 | break; | |
139 | tsize = atol(*argv); | |
140 | if (tsize < 1) { | |
141 | fprintf(stderr, "bad size \"%s\"\n", *argv); | |
142 | Exit(X_ABORT); | |
143 | } | |
144 | argc--; | |
145 | argv++; | |
146 | tsize *= 12 * 10; | |
147 | continue; | |
148 | ||
149 | case 'b': /* blocks per tape write */ | |
150 | if (argc < 1) | |
151 | break; | |
152 | bflag++; | |
153 | ntrec = atoi(*argv); | |
154 | if (ntrec < 1) { | |
155 | fprintf(stderr, "%s \"%s\"\n", | |
156 | "bad number of blocks per write ", *argv); | |
157 | Exit(X_ABORT); | |
158 | } | |
159 | argc--; | |
160 | argv++; | |
161 | continue; | |
162 | ||
163 | case 'B': /* blocks per output file */ | |
164 | if (argc < 1) | |
165 | break; | |
166 | blocksperfile = atol(*argv); | |
167 | if (blocksperfile < 1) { | |
168 | fprintf(stderr, "%s \"%s\"\n", | |
169 | "bad number of blocks per file ", *argv); | |
170 | Exit(X_ABORT); | |
171 | } | |
172 | argc--; | |
173 | argv++; | |
174 | continue; | |
175 | ||
176 | case 'c': /* Tape is cart. not 9-track */ | |
177 | cartridge++; | |
178 | continue; | |
179 | ||
180 | case '0': /* dump level */ | |
181 | case '1': | |
182 | case '2': | |
183 | case '3': | |
184 | case '4': | |
185 | case '5': | |
186 | case '6': | |
187 | case '7': | |
188 | case '8': | |
189 | case '9': | |
190 | level = *cp; | |
191 | continue; | |
192 | ||
193 | case 'u': /* update /etc/dumpdates */ | |
194 | uflag++; | |
195 | continue; | |
196 | ||
197 | case 'n': /* notify operators */ | |
198 | notify++; | |
199 | continue; | |
200 | ||
201 | default: | |
202 | fprintf(stderr, "bad key '%c'\n", *cp); | |
203 | Exit(X_ABORT); | |
204 | } | |
205 | fprintf(stderr, "missing argument to '%c'\n", *cp); | |
206 | Exit(X_ABORT); | |
207 | } | |
208 | if (argc < 1) { | |
209 | fprintf(stderr, "Must specify disk or filesystem\n"); | |
210 | Exit(X_ABORT); | |
211 | } else { | |
212 | disk = *argv++; | |
213 | argc--; | |
214 | } | |
215 | if (argc >= 1) { | |
216 | fprintf(stderr, "Unknown arguments to dump:"); | |
217 | while (argc--) | |
218 | fprintf(stderr, " %s", *argv++); | |
219 | fprintf(stderr, "\n"); | |
220 | Exit(X_ABORT); | |
221 | } | |
222 | if (strcmp(tape, "-") == 0) { | |
223 | pipeout++; | |
224 | tape = "standard output"; | |
225 | } | |
226 | ||
227 | if (blocksperfile) | |
228 | blocksperfile = blocksperfile / ntrec * ntrec; /* round down */ | |
229 | else { | |
230 | /* | |
231 | * Determine how to default tape size and density | |
232 | * | |
233 | * density tape size | |
234 | * 9-track 1600 bpi (160 bytes/.1") 2300 ft. | |
235 | * 9-track 6250 bpi (625 bytes/.1") 2300 ft. | |
236 | * cartridge 8000 bpi (100 bytes/.1") 1700 ft. | |
237 | * (450*4 - slop) | |
238 | */ | |
239 | if (density == 0) | |
240 | density = cartridge ? 100 : 160; | |
241 | if (tsize == 0) | |
242 | tsize = cartridge ? 1700L*120L : 2300L*120L; | |
243 | } | |
244 | ||
245 | #ifdef RDUMP | |
246 | { char *index(); | |
247 | host = tape; | |
248 | tape = index(host, ':'); | |
249 | if (tape == 0) { | |
250 | msg("need keyletter ``f'' and device ``host:tape''\n"); | |
251 | exit(1); | |
252 | } | |
253 | *tape++ = 0; | |
254 | if (rmthost(host) == 0) | |
255 | exit(X_ABORT); | |
256 | } | |
257 | setuid(getuid()); /* rmthost() is the only reason to be setuid */ | |
258 | #endif | |
259 | if (signal(SIGHUP, SIG_IGN) != SIG_IGN) | |
260 | signal(SIGHUP, sighup); | |
261 | if (signal(SIGTRAP, SIG_IGN) != SIG_IGN) | |
262 | signal(SIGTRAP, sigtrap); | |
263 | if (signal(SIGFPE, SIG_IGN) != SIG_IGN) | |
264 | signal(SIGFPE, sigfpe); | |
265 | if (signal(SIGBUS, SIG_IGN) != SIG_IGN) | |
266 | signal(SIGBUS, sigbus); | |
267 | if (signal(SIGSEGV, SIG_IGN) != SIG_IGN) | |
268 | signal(SIGSEGV, sigsegv); | |
269 | if (signal(SIGTERM, SIG_IGN) != SIG_IGN) | |
270 | signal(SIGTERM, sigterm); | |
271 | ||
272 | ||
273 | if (signal(SIGINT, interrupt) == SIG_IGN) | |
274 | signal(SIGINT, SIG_IGN); | |
275 | ||
276 | set_operators(); /* /etc/group snarfed */ | |
277 | getfstab(); /* /etc/fstab snarfed */ | |
278 | /* | |
279 | * disk can be either the full special file name, | |
280 | * the suffix of the special file name, | |
281 | * the special name missing the leading '/', | |
282 | * the file system name with or without the leading '/'. | |
283 | */ | |
284 | dt = fstabsearch(disk); | |
285 | if (dt != 0) { | |
286 | disk = rawname(dt->fs_spec); | |
287 | strncpy(spcl.c_dev, dt->fs_spec, NAMELEN); | |
288 | strncpy(spcl.c_filesys, dt->fs_file, NAMELEN); | |
289 | } else { | |
290 | strncpy(spcl.c_dev, disk, NAMELEN); | |
291 | strncpy(spcl.c_filesys, "an unlisted file system", NAMELEN); | |
292 | } | |
293 | strcpy(spcl.c_label, "none"); | |
294 | gethostname(spcl.c_host, NAMELEN); | |
295 | spcl.c_level = level - '0'; | |
296 | spcl.c_type = TS_TAPE; | |
297 | getdumptime(); /* /etc/dumpdates snarfed */ | |
298 | ||
299 | msg("Date of this level %c dump: %s", level, | |
300 | spcl.c_date == 0 ? "the epoch\n" : ctime(&spcl.c_date)); | |
301 | msg("Date of last level %c dump: %s", lastlevel, | |
302 | spcl.c_ddate == 0 ? "the epoch\n" : ctime(&spcl.c_ddate)); | |
303 | msg("Dumping %s ", disk); | |
304 | if (dt != 0) | |
305 | msgtail("(%s) ", dt->fs_file); | |
306 | #ifdef RDUMP | |
307 | msgtail("to %s on host %s\n", tape, host); | |
308 | #else | |
309 | msgtail("to %s\n", tape); | |
310 | #endif | |
311 | ||
312 | if ((diskfd = open(disk, O_RDONLY)) < 0) { | |
313 | msg("Cannot open %s\n", disk); | |
314 | Exit(X_ABORT); | |
315 | } | |
316 | sync(); | |
317 | sblock = (struct fs *)buf; | |
318 | bread(SBOFF, sblock, SBSIZE); | |
319 | if (sblock->fs_magic != FS_MAGIC) | |
320 | quit("bad sblock magic number\n"); | |
321 | dev_bsize = sblock->fs_fsize / fsbtodb(sblock, 1); | |
322 | dev_bshift = ffs(dev_bsize) - 1; | |
323 | if (dev_bsize != (1 << dev_bshift)) | |
324 | quit("dev_bsize (%d) is not a power of 2", dev_bsize); | |
325 | tp_bshift = ffs(TP_BSIZE) - 1; | |
326 | if (TP_BSIZE != (1 << tp_bshift)) | |
327 | quit("TP_BSIZE (%d) is not a power of 2", TP_BSIZE); | |
328 | maxino = sblock->fs_ipg * sblock->fs_ncg - 1; | |
329 | mapsize = roundup(howmany(sblock->fs_ipg * sblock->fs_ncg, NBBY), | |
330 | TP_BSIZE); | |
331 | usedinomap = (char *)calloc(mapsize, sizeof(char)); | |
332 | dumpdirmap = (char *)calloc(mapsize, sizeof(char)); | |
333 | dumpinomap = (char *)calloc(mapsize, sizeof(char)); | |
334 | tapesize = 3 * (howmany(mapsize * sizeof(char), TP_BSIZE) + 1); | |
335 | ||
336 | msg("mapping (Pass I) [regular files]\n"); | |
337 | anydirskipped = mapfiles(maxino, &tapesize); | |
338 | ||
339 | msg("mapping (Pass II) [directories]\n"); | |
340 | while (anydirskipped) { | |
341 | anydirskipped = mapdirs(maxino, &tapesize); | |
342 | } | |
343 | ||
344 | if (pipeout) | |
345 | tapesize += 10; /* 10 trailer blocks */ | |
346 | else { | |
347 | if (blocksperfile) | |
348 | fetapes = (float) tapesize / blocksperfile; | |
349 | else if (cartridge) { | |
350 | /* Estimate number of tapes, assuming streaming stops at | |
351 | the end of each block written, and not in mid-block. | |
352 | Assume no erroneous blocks; this can be compensated | |
353 | for with an artificially low tape size. */ | |
354 | fetapes = | |
355 | ( tapesize /* blocks */ | |
356 | * TP_BSIZE /* bytes/block */ | |
357 | * (1.0/density) /* 0.1" / byte */ | |
358 | + | |
359 | tapesize /* blocks */ | |
360 | * (1.0/ntrec) /* streaming-stops per block */ | |
361 | * 15.48 /* 0.1" / streaming-stop */ | |
362 | ) * (1.0 / tsize ); /* tape / 0.1" */ | |
363 | } else { | |
364 | /* Estimate number of tapes, for old fashioned 9-track | |
365 | tape */ | |
366 | int tenthsperirg = (density == 625) ? 3 : 7; | |
367 | fetapes = | |
368 | ( tapesize /* blocks */ | |
369 | * TP_BSIZE /* bytes / block */ | |
370 | * (1.0/density) /* 0.1" / byte */ | |
371 | + | |
372 | tapesize /* blocks */ | |
373 | * (1.0/ntrec) /* IRG's / block */ | |
374 | * tenthsperirg /* 0.1" / IRG */ | |
375 | ) * (1.0 / tsize ); /* tape / 0.1" */ | |
376 | } | |
377 | etapes = fetapes; /* truncating assignment */ | |
378 | etapes++; | |
379 | /* count the dumped inodes map on each additional tape */ | |
380 | tapesize += (etapes - 1) * | |
381 | (howmany(mapsize * sizeof(char), TP_BSIZE) + 1); | |
382 | tapesize += etapes + 10; /* headers + 10 trailer blks */ | |
383 | } | |
384 | if (pipeout) | |
385 | msg("estimated %ld tape blocks.\n", tapesize); | |
386 | else | |
387 | msg("estimated %ld tape blocks on %3.2f tape(s).\n", | |
388 | tapesize, fetapes); | |
389 | ||
390 | alloctape(); /* Allocate tape buffer */ | |
391 | ||
392 | startnewtape(); | |
393 | time(&(tstart_writing)); | |
394 | dumpmap(usedinomap, TS_CLRI, maxino); | |
395 | ||
396 | msg("dumping (Pass III) [directories]\n"); | |
397 | for (map = dumpdirmap, ino = 0; ino < maxino; ) { | |
398 | if ((ino % NBBY) == 0) | |
399 | dirty = *map++; | |
400 | else | |
401 | dirty >>= 1; | |
402 | ino++; | |
403 | if ((dirty & 1) == 0) | |
404 | continue; | |
405 | /* | |
406 | * Skip directory inodes deleted and maybe reallocated | |
407 | */ | |
408 | dp = getino(ino); | |
409 | if ((dp->di_mode & IFMT) != IFDIR) | |
410 | continue; | |
411 | dumpino(dp, ino); | |
412 | } | |
413 | ||
414 | msg("dumping (Pass IV) [regular files]\n"); | |
415 | for (map = dumpinomap, ino = 0; ino < maxino; ) { | |
416 | if ((ino % NBBY) == 0) | |
417 | dirty = *map++; | |
418 | else | |
419 | dirty >>= 1; | |
420 | ino++; | |
421 | if ((dirty & 1) == 0) | |
422 | continue; | |
423 | /* | |
424 | * Skip inodes deleted and reallocated as directories. | |
425 | */ | |
426 | dp = getino(ino); | |
427 | if ((dp->di_mode & IFMT) == IFDIR) | |
428 | continue; | |
429 | dumpino(dp, ino); | |
430 | } | |
431 | ||
432 | spcl.c_type = TS_END; | |
433 | #ifndef RDUMP | |
434 | for (i = 0; i < ntrec; i++) | |
435 | writeheader(maxino); | |
436 | #endif | |
437 | if (pipeout) | |
438 | msg("DUMP: %ld tape blocks\n",spcl.c_tapea); | |
439 | else | |
440 | msg("DUMP: %ld tape blocks on %d volumes(s)\n", | |
441 | spcl.c_tapea, spcl.c_volume); | |
442 | msg("DUMP IS DONE\n"); | |
443 | ||
444 | putdumptime(); | |
445 | #ifndef RDUMP | |
446 | if (!pipeout) { | |
447 | close(tapefd); | |
448 | trewind(); | |
449 | } | |
450 | #else | |
451 | for (i = 0; i < ntrec; i++) | |
452 | writeheader(curino); | |
453 | trewind(); | |
454 | #endif | |
455 | broadcast("DUMP IS DONE!\7\7\n"); | |
456 | Exit(X_FINOK); | |
457 | /* NOTREACHED */ | |
458 | } | |
459 | ||
460 | void | |
461 | sigAbort() | |
462 | { | |
463 | if (pipeout) | |
464 | quit("Unknown signal, cannot recover\n"); | |
465 | msg("Rewriting attempted as response to unknown signal.\n"); | |
466 | fflush(stderr); | |
467 | fflush(stdout); | |
468 | close_rewind(); | |
469 | exit(X_REWRITE); | |
470 | } | |
471 | ||
472 | void sighup(){ msg("SIGHUP() try rewriting\n"); sigAbort();} | |
473 | void sigtrap(){ msg("SIGTRAP() try rewriting\n"); sigAbort();} | |
474 | void sigfpe(){ msg("SIGFPE() try rewriting\n"); sigAbort();} | |
475 | void sigbus(){ msg("SIGBUS() try rewriting\n"); sigAbort();} | |
476 | void sigsegv(){ msg("SIGSEGV() ABORTING!\n"); abort();} | |
477 | void sigalrm(){ msg("SIGALRM() try rewriting\n"); sigAbort();} | |
478 | void sigterm(){ msg("SIGTERM() try rewriting\n"); sigAbort();} | |
479 | ||
480 | char * | |
481 | rawname(cp) | |
482 | char *cp; | |
483 | { | |
484 | static char rawbuf[32]; | |
485 | char *rindex(); | |
486 | char *dp = rindex(cp, '/'); | |
487 | ||
488 | if (dp == 0) | |
489 | return (0); | |
490 | *dp = 0; | |
491 | strcpy(rawbuf, cp); | |
492 | *dp = '/'; | |
493 | strcat(rawbuf, "/r"); | |
494 | strcat(rawbuf, dp+1); | |
495 | return (rawbuf); | |
496 | } |