Commit | Line | Data |
---|---|---|
f78e116c KM |
1 | /* Copyright (c) 1983 Regents of the University of California */ |
2 | ||
3 | #ifndef lint | |
6a8e228c | 4 | static char sccsid[] = "@(#)tape.c 3.13 (Berkeley) 83/05/03"; |
f78e116c KM |
5 | #endif |
6 | ||
7 | #include "restore.h" | |
8 | #include <dumprestor.h> | |
9 | #include <sys/ioctl.h> | |
10 | #include <sys/mtio.h> | |
2cb5dabb | 11 | #include <sys/file.h> |
f78e116c KM |
12 | #include <setjmp.h> |
13 | #include <stat.h> | |
2cb5dabb KM |
14 | |
15 | static long fssize; | |
16 | static int mt = -1; | |
17 | static int pipein = 0; | |
18 | static char *magtape; | |
2cb5dabb KM |
19 | static int bct = NTREC+1; |
20 | static char tbf[NTREC*TP_BSIZE]; | |
21 | static union u_spcl endoftapemark; | |
22 | static long blksread; | |
23 | static jmp_buf restart; | |
24 | static int gettingfile = 0; /* restart has a valid frame */ | |
25 | ||
26 | static int ofile; | |
27 | static char *map; | |
28 | static char lnkbuf[MAXPATHLEN + 1]; | |
29 | static int pathlen; | |
f78e116c KM |
30 | |
31 | /* | |
32 | * Set up an input source | |
33 | */ | |
34 | setinput(source) | |
35 | char *source; | |
36 | { | |
37 | #ifdef RRESTOR | |
38 | char *host; | |
39 | char *index(); | |
40 | ||
41 | host = source; | |
42 | magtape = index(host, ':'); | |
43 | if (magtape == 0) { | |
44 | nohost: | |
5c5f44c7 | 45 | msg("need keyletter ``f'' and device ``host:tape''\n"); |
f78e116c KM |
46 | done(1); |
47 | } | |
48 | *magtape++ = '\0'; | |
49 | if (rmthost(host) == 0) | |
50 | done(1); | |
51 | setuid(getuid()); /* no longer need or want root privileges */ | |
52 | #else | |
b677c5d7 KM |
53 | if (strcmp(source, "-") != 0) { |
54 | terminal = stdin; | |
55 | } else { | |
56 | /* | |
57 | * Since input is coming from a pipe we must establish | |
58 | * our own connection to the terminal. | |
59 | */ | |
60 | terminal = fopen("/dev/tty", "r"); | |
61 | if (terminal == NULL) { | |
62 | perror("open(\"/dev/tty\")"); | |
63 | done(1); | |
64 | } | |
2cb5dabb | 65 | pipein++; |
2cb5dabb | 66 | } |
f78e116c KM |
67 | magtape = source; |
68 | #endif RRESTOR | |
69 | } | |
70 | ||
71 | /* | |
72 | * Verify that the tape drive can be accessed and | |
73 | * that it actually is a dump tape. | |
74 | */ | |
75 | setup() | |
76 | { | |
2cb5dabb | 77 | int i, j, *ip; |
f78e116c KM |
78 | struct stat stbuf; |
79 | extern char *ctime(); | |
80 | extern int xtrmap(), xtrmapskip(); | |
81 | ||
82 | vprintf(stdout, "Verify tape and initialize maps\n"); | |
f78e116c KM |
83 | #ifdef RRESTOR |
84 | if ((mt = rmtopen(magtape, 0)) < 0) | |
85 | #else | |
2cb5dabb KM |
86 | if (pipein) |
87 | mt = 0; | |
88 | else if ((mt = open(magtape, 0)) < 0) | |
f78e116c KM |
89 | #endif |
90 | { | |
91 | fprintf(stderr, "%s: cannot open tape\n", magtape); | |
92 | done(1); | |
93 | } | |
768eb687 KM |
94 | volno = 1; |
95 | setdumpnum(); | |
f78e116c | 96 | flsht(); |
5c5f44c7 | 97 | if (gethead(&spcl) == FAIL) { |
f78e116c KM |
98 | bct--; /* push back this block */ |
99 | cvtflag++; | |
5c5f44c7 | 100 | if (gethead(&spcl) == FAIL) { |
f78e116c KM |
101 | fprintf(stderr, "Tape is not a dump tape\n"); |
102 | done(1); | |
103 | } | |
104 | fprintf(stderr, "Converting to new file system format.\n"); | |
105 | } | |
2cb5dabb KM |
106 | if (pipein) { |
107 | endoftapemark.s_spcl.c_magic = cvtflag ? OFS_MAGIC : NFS_MAGIC; | |
108 | endoftapemark.s_spcl.c_type = TS_END; | |
109 | ip = (int *)&endoftapemark; | |
110 | j = sizeof(union u_spcl) / sizeof(int); | |
111 | i = 0; | |
112 | do | |
113 | i += *ip++; | |
114 | while (--j); | |
115 | endoftapemark.s_spcl.c_checksum = CHECKSUM - i; | |
116 | } | |
6a8e228c KM |
117 | if (vflag || command == 't') { |
118 | fprintf(stdout, "Dump date: %s", ctime(&spcl.c_date)); | |
119 | fprintf(stdout, "Dumped from: %s", ctime(&spcl.c_ddate)); | |
120 | } | |
f78e116c | 121 | dumptime = spcl.c_ddate; |
2cb5dabb | 122 | dumpdate = spcl.c_date; |
f78e116c KM |
123 | if (stat(".", &stbuf) < 0) { |
124 | fprintf(stderr, "cannot stat .\n"); | |
125 | done(1); | |
126 | } | |
127 | fssize = stbuf.st_blksize; | |
128 | if (fssize <= 0 || ((fssize - 1) & fssize) != 0) { | |
129 | fprintf(stderr, "bad block size %d\n", fssize); | |
130 | done(1); | |
131 | } | |
2cb5dabb | 132 | if (checkvol(&spcl, (long)1) == FAIL) { |
f78e116c KM |
133 | fprintf(stderr, "Tape is not volume 1 of the dump\n"); |
134 | done(1); | |
135 | } | |
2cb5dabb KM |
136 | if (readhdr(&spcl) == FAIL) |
137 | panic("no header after volume mark!\n"); | |
138 | findinode(&spcl, 1); | |
139 | if (checktype(&spcl, TS_CLRI) == FAIL) { | |
f78e116c KM |
140 | fprintf(stderr, "Cannot find file removal list\n"); |
141 | done(1); | |
142 | } | |
2cb5dabb | 143 | maxino = (spcl.c_count * TP_BSIZE * NBBY) + 1; |
768eb687 | 144 | dprintf(stdout, "maxino = %d\n", maxino); |
7851e15d | 145 | map = calloc((unsigned)1, (unsigned)howmany(maxino, NBBY)); |
f78e116c KM |
146 | if (map == (char *)NIL) |
147 | panic("no memory for file removal list\n"); | |
cf6db0ab | 148 | clrimap = map; |
f78e116c KM |
149 | curfile.action = USING; |
150 | getfile(xtrmap, xtrmapskip); | |
2cb5dabb | 151 | if (checktype(&spcl, TS_BITS) == FAIL) { |
f78e116c KM |
152 | fprintf(stderr, "Cannot find file dump list\n"); |
153 | done(1); | |
154 | } | |
7851e15d | 155 | map = calloc((unsigned)1, (unsigned)howmany(maxino, NBBY)); |
f78e116c KM |
156 | if (map == (char *)NULL) |
157 | panic("no memory for file dump list\n"); | |
cf6db0ab | 158 | dumpmap = map; |
f78e116c KM |
159 | curfile.action = USING; |
160 | getfile(xtrmap, xtrmapskip); | |
f78e116c KM |
161 | } |
162 | ||
163 | getvol(nextvol) | |
164 | long nextvol; | |
165 | { | |
166 | long newvol; | |
2cb5dabb | 167 | long savecnt; |
f78e116c KM |
168 | union u_spcl tmpspcl; |
169 | # define tmpbuf tmpspcl.s_spcl | |
170 | ||
2cb5dabb | 171 | if (pipein) { |
e108d3a2 | 172 | if (nextvol != 1) |
2cb5dabb | 173 | panic("Changing volumes on pipe input?\n"); |
e108d3a2 KM |
174 | if (volno == 1) |
175 | return; | |
176 | goto gethdr; | |
2cb5dabb KM |
177 | } |
178 | savecnt = blksread; | |
f78e116c | 179 | again: |
e108d3a2 KM |
180 | if (pipein) |
181 | done(1); /* pipes do not get a second chance */ | |
f78e116c KM |
182 | if (command == 'R' || command == 'r' || curfile.action != SKIP) |
183 | newvol = nextvol; | |
184 | else | |
185 | newvol = 0; | |
186 | while (newvol <= 0) { | |
538cb7bb | 187 | do { |
b677c5d7 KM |
188 | fprintf(stderr, "Specify next volume #: "); |
189 | (void) fflush(stderr); | |
190 | (void) fgets(tbf, BUFSIZ, terminal); | |
191 | } while (!feof(terminal) && tbf[0] == '\n'); | |
192 | if (feof(terminal)) | |
538cb7bb | 193 | done(1); |
f78e116c KM |
194 | newvol = atoi(tbf); |
195 | if (newvol <= 0) { | |
196 | fprintf(stderr, | |
197 | "Volume numbers are positive numerics\n"); | |
198 | } | |
199 | } | |
200 | if (newvol == volno) | |
201 | return; | |
202 | closemt(); | |
5c5f44c7 | 203 | fprintf(stderr, "Mount tape volume %d then type return ", newvol); |
b677c5d7 KM |
204 | (void) fflush(stderr); |
205 | while (getc(terminal) != '\n') | |
f78e116c KM |
206 | ; |
207 | #ifdef RRESTOR | |
208 | if ((mt = rmtopen(magtape, 0)) == -1) | |
209 | #else | |
210 | if ((mt = open(magtape, 0)) == -1) | |
211 | #endif | |
212 | { | |
213 | fprintf(stderr, "Cannot open tape!\n"); | |
214 | goto again; | |
215 | } | |
e108d3a2 | 216 | gethdr: |
f78e116c | 217 | volno = newvol; |
768eb687 | 218 | setdumpnum(); |
f78e116c | 219 | flsht(); |
2cb5dabb | 220 | if (readhdr(&tmpbuf) == FAIL) { |
f78e116c KM |
221 | fprintf(stderr, "tape is not dump tape\n"); |
222 | volno = 0; | |
223 | goto again; | |
224 | } | |
2cb5dabb | 225 | if (checkvol(&tmpbuf, volno) == FAIL) { |
f78e116c KM |
226 | fprintf(stderr, "Wrong volume (%d)\n", tmpbuf.c_volume); |
227 | volno = 0; | |
228 | goto again; | |
229 | } | |
2cb5dabb | 230 | if (tmpbuf.c_date != dumpdate || tmpbuf.c_ddate != dumptime) { |
6a8e228c KM |
231 | fprintf(stderr, "Wrong dump date got: %swanted %s", |
232 | ctime(&tmpbuf.c_date), ctime(dumpdate)); | |
2cb5dabb KM |
233 | volno = 0; |
234 | goto again; | |
235 | } | |
5c5f44c7 | 236 | blksread = savecnt; |
f78e116c KM |
237 | if (curfile.action == USING) { |
238 | if (volno == 1) | |
239 | panic("active file into volume 1\n"); | |
240 | return; | |
241 | } | |
5c5f44c7 | 242 | (void) gethead(&spcl); |
f78e116c KM |
243 | findinode(&spcl, curfile.action == UNKNOWN ? 1 : 0); |
244 | if (gettingfile) { | |
245 | gettingfile = 0; | |
246 | longjmp(restart, 1); | |
247 | } | |
248 | } | |
249 | ||
768eb687 KM |
250 | /* |
251 | * handle multiple dumps per tape by skipping forward to the | |
252 | * appropriate one. | |
253 | */ | |
254 | setdumpnum() | |
255 | { | |
256 | struct mtop tcom; | |
257 | ||
258 | if (dumpnum == 1 || volno != 1) | |
259 | return; | |
260 | if (pipein) { | |
261 | fprintf(stderr, "Cannot have multiple dumps on pipe input\n"); | |
262 | done(1); | |
263 | } | |
264 | tcom.mt_op = MTFSF; | |
265 | tcom.mt_count = dumpnum - 1; | |
266 | #ifdef RRESTOR | |
267 | rmtioctl(MTFSF, dumpnum - 1); | |
268 | #else | |
538cb7bb | 269 | if (ioctl(mt, (int)MTIOCTOP, (char *)&tcom) < 0) |
768eb687 KM |
270 | perror("ioctl MTFSF"); |
271 | #endif | |
272 | } | |
273 | ||
f78e116c KM |
274 | extractfile(name) |
275 | char *name; | |
276 | { | |
277 | int mode; | |
278 | time_t timep[2]; | |
279 | struct entry *ep; | |
280 | extern int xtrlnkfile(), xtrlnkskip(); | |
281 | extern int xtrfile(), xtrskip(); | |
282 | ||
283 | curfile.name = name; | |
284 | curfile.action = USING; | |
285 | timep[0] = curfile.dip->di_atime; | |
286 | timep[1] = curfile.dip->di_mtime; | |
287 | mode = curfile.dip->di_mode; | |
288 | switch (mode & IFMT) { | |
289 | ||
290 | default: | |
291 | fprintf(stderr, "%s: unknown file mode 0%o\n", name, mode); | |
292 | skipfile(); | |
293 | return (FAIL); | |
294 | ||
295 | case IFDIR: | |
296 | if (mflag) { | |
297 | ep = lookupname(name); | |
298 | if (ep == NIL || ep->e_flags & EXTRACT) | |
299 | panic("unextracted directory %s\n", name); | |
300 | skipfile(); | |
301 | return (GOOD); | |
302 | } | |
303 | vprintf(stdout, "extract file %s\n", name); | |
304 | return (genliteraldir(name, curfile.ino)); | |
305 | ||
306 | case IFLNK: | |
307 | lnkbuf[0] = '\0'; | |
308 | pathlen = 0; | |
309 | getfile(xtrlnkfile, xtrlnkskip); | |
310 | if (pathlen == 0) { | |
311 | vprintf(stdout, | |
312 | "%s: zero length symbolic link (ignored)\n", name); | |
313 | } else if (symlink(lnkbuf, name) < 0) { | |
314 | fprintf(stderr, "%s: cannot create symbolic link\n", | |
315 | name); | |
316 | return (FAIL); | |
317 | } else | |
318 | vprintf(stdout, "extract symbolic link %s\n", name); | |
319 | return (GOOD); | |
320 | ||
321 | case IFCHR: | |
322 | case IFBLK: | |
323 | vprintf(stdout, "extract special file %s\n", name); | |
324 | if (mknod(name, mode, (int)curfile.dip->di_rdev) < 0) { | |
325 | fprintf(stderr, "%s: cannot create special file\n", | |
326 | name); | |
327 | skipfile(); | |
328 | return (FAIL); | |
329 | } | |
768eb687 KM |
330 | (void) chown(name, curfile.dip->di_uid, curfile.dip->di_gid); |
331 | (void) chmod(name, mode); | |
f78e116c KM |
332 | skipfile(); |
333 | utime(name, timep); | |
334 | return (GOOD); | |
335 | ||
336 | case IFREG: | |
337 | vprintf(stdout, "extract file %s\n", name); | |
338 | if ((ofile = open(name, FWRONLY|FCREATE, 0666)) < 0) { | |
339 | fprintf(stderr, "%s: cannot create file\n", name); | |
340 | skipfile(); | |
341 | return (FAIL); | |
342 | } | |
768eb687 KM |
343 | (void) fchown(ofile, curfile.dip->di_uid, curfile.dip->di_gid); |
344 | (void) fchmod(ofile, mode); | |
f78e116c | 345 | getfile(xtrfile, xtrskip); |
768eb687 | 346 | (void) close(ofile); |
f78e116c KM |
347 | utime(name, timep); |
348 | return (GOOD); | |
349 | } | |
350 | /* NOTREACHED */ | |
351 | } | |
352 | ||
e108d3a2 KM |
353 | /* |
354 | * skip over bit maps on the tape | |
355 | */ | |
356 | skipmaps() | |
357 | { | |
358 | ||
359 | while (checktype(&spcl, TS_CLRI) == GOOD || | |
360 | checktype(&spcl, TS_BITS) == GOOD) | |
361 | skipfile(); | |
362 | } | |
363 | ||
364 | /* | |
365 | * skip over a file on the tape | |
366 | */ | |
f78e116c KM |
367 | skipfile() |
368 | { | |
369 | extern int null(); | |
370 | ||
371 | curfile.action = SKIP; | |
372 | getfile(null, null); | |
373 | } | |
374 | ||
375 | /* | |
376 | * Do the file extraction, calling the supplied functions | |
377 | * with the blocks | |
378 | */ | |
379 | getfile(f1, f2) | |
380 | int (*f2)(), (*f1)(); | |
381 | { | |
382 | register int i; | |
383 | int curblk = 0; | |
384 | off_t size = spcl.c_dinode.di_size; | |
385 | static char clearedbuf[MAXBSIZE]; | |
386 | char buf[MAXBSIZE / TP_BSIZE][TP_BSIZE]; | |
387 | ||
2cb5dabb | 388 | if (checktype(&spcl, TS_END) == GOOD) |
f78e116c | 389 | panic("ran off end of tape\n"); |
e108d3a2 | 390 | if (ishead(&spcl) == FAIL) |
f78e116c | 391 | panic("not at beginning of a file\n"); |
e108d3a2 | 392 | if (!gettingfile && setjmp(restart) != 0) |
f78e116c KM |
393 | return; |
394 | gettingfile++; | |
395 | loop: | |
396 | for (i = 0; i < spcl.c_count; i++) { | |
397 | if (spcl.c_addr[i]) { | |
398 | readtape(&buf[curblk++][0]); | |
399 | if (curblk == fssize / TP_BSIZE) { | |
400 | (*f1)(buf, size > TP_BSIZE ? | |
401 | (long) (fssize) : | |
402 | (curblk - 1) * TP_BSIZE + size); | |
403 | curblk = 0; | |
404 | } | |
405 | } else { | |
406 | if (curblk > 0) { | |
407 | (*f1)(buf, size > TP_BSIZE ? | |
408 | (long) (curblk * TP_BSIZE) : | |
409 | (curblk - 1) * TP_BSIZE + size); | |
410 | curblk = 0; | |
411 | } | |
412 | (*f2)(clearedbuf, size > TP_BSIZE ? | |
413 | (long) TP_BSIZE : size); | |
414 | } | |
9f13f26d KM |
415 | if ((size -= TP_BSIZE) <= 0) |
416 | break; | |
f78e116c | 417 | } |
5c5f44c7 | 418 | if (readhdr(&spcl) == GOOD && size > 0) { |
9f13f26d KM |
419 | if (checktype(&spcl, TS_ADDR) == GOOD) |
420 | goto loop; | |
768eb687 | 421 | dprintf(stdout, "Missing address (header) block for %s\n", |
f78e116c | 422 | curfile.name); |
f78e116c | 423 | } |
9f13f26d | 424 | if (curblk > 0) |
f78e116c | 425 | (*f1)(buf, (curblk * TP_BSIZE) + size); |
f78e116c KM |
426 | findinode(&spcl, 1); |
427 | gettingfile = 0; | |
428 | } | |
429 | ||
430 | /* | |
431 | * The next routines are called during file extraction to | |
432 | * put the data into the right form and place. | |
433 | */ | |
434 | xtrfile(buf, size) | |
435 | char *buf; | |
436 | long size; | |
437 | { | |
438 | ||
439 | if (write(ofile, buf, (int) size) == -1) { | |
440 | fprintf(stderr, "write error extracting inode %d, name %s\n", | |
441 | curfile.ino, curfile.name); | |
442 | perror("write"); | |
443 | done(1); | |
444 | } | |
445 | } | |
446 | ||
447 | xtrskip(buf, size) | |
448 | char *buf; | |
449 | long size; | |
450 | { | |
451 | ||
452 | #ifdef lint | |
453 | buf = buf; | |
454 | #endif | |
455 | if (lseek(ofile, size, 1) == (long)-1) { | |
456 | fprintf(stderr, "seek error extracting inode %d, name %s\n", | |
457 | curfile.ino, curfile.name); | |
458 | perror("lseek"); | |
459 | done(1); | |
460 | } | |
461 | } | |
462 | ||
463 | xtrlnkfile(buf, size) | |
464 | char *buf; | |
465 | long size; | |
466 | { | |
467 | ||
468 | pathlen += size; | |
469 | if (pathlen > MAXPATHLEN) { | |
470 | fprintf(stderr, "symbolic link name: %s->%s%s; too long %d\n", | |
471 | curfile.name, lnkbuf, buf, pathlen); | |
472 | done(1); | |
473 | } | |
538cb7bb | 474 | (void) strcat(lnkbuf, buf); |
f78e116c KM |
475 | } |
476 | ||
477 | xtrlnkskip(buf, size) | |
478 | char *buf; | |
479 | long size; | |
480 | { | |
481 | ||
482 | #ifdef lint | |
483 | buf = buf, size = size; | |
484 | #endif | |
485 | fprintf(stderr, "unallocated block in symbolic link %s\n", | |
486 | curfile.name); | |
487 | done(1); | |
488 | } | |
489 | ||
490 | xtrmap(buf, size) | |
491 | char *buf; | |
492 | long size; | |
493 | { | |
494 | ||
495 | bcopy(buf, map, size); | |
cf6db0ab | 496 | map += size; |
f78e116c KM |
497 | } |
498 | ||
499 | xtrmapskip(buf, size) | |
500 | char *buf; | |
501 | long size; | |
502 | { | |
503 | ||
504 | #ifdef lint | |
505 | buf = buf; | |
f78e116c KM |
506 | #endif |
507 | panic("hole in map\n"); | |
cf6db0ab | 508 | map += size; |
f78e116c KM |
509 | } |
510 | ||
511 | null() {;} | |
512 | ||
513 | /* | |
514 | * Do the tape i/o, dealing with volume changes | |
515 | * etc.. | |
516 | */ | |
517 | readtape(b) | |
518 | char *b; | |
519 | { | |
520 | register long i; | |
7851e15d KM |
521 | long rd, newvol; |
522 | int cnt; | |
f78e116c KM |
523 | |
524 | if (bct >= NTREC) { | |
525 | for (i = 0; i < NTREC; i++) | |
526 | ((struct s_spcl *)&tbf[i*TP_BSIZE])->c_magic = 0; | |
527 | bct = 0; | |
74025ab9 KM |
528 | cnt = NTREC*TP_BSIZE; |
529 | rd = 0; | |
530 | getmore: | |
f78e116c | 531 | #ifdef RRESTOR |
74025ab9 | 532 | i = rmtread(&tbf[rd], cnt); |
f78e116c | 533 | #else |
74025ab9 | 534 | i = read(mt, &tbf[rd], cnt); |
f78e116c | 535 | #endif |
74025ab9 KM |
536 | if (i > 0 && i != NTREC*TP_BSIZE) { |
537 | if (!pipein) | |
538 | panic("partial block read: %d should be %d\n", | |
539 | i, NTREC*TP_BSIZE); | |
540 | rd += i; | |
541 | cnt -= i; | |
542 | if (cnt > 0) | |
543 | goto getmore; | |
544 | i = rd; | |
545 | } | |
546 | if (i < 0) { | |
f78e116c KM |
547 | fprintf(stderr, "Tape read error while "); |
548 | switch (curfile.action) { | |
74025ab9 KM |
549 | default: |
550 | fprintf(stderr, "trying to set up tape\n"); | |
551 | break; | |
f78e116c KM |
552 | case UNKNOWN: |
553 | fprintf(stderr, "trying to resyncronize\n"); | |
554 | break; | |
555 | case USING: | |
556 | fprintf(stderr, "restoring %s\n", curfile.name); | |
557 | break; | |
558 | case SKIP: | |
559 | fprintf(stderr, "skipping over inode %d\n", | |
560 | curfile.ino); | |
561 | break; | |
562 | } | |
563 | if (!yflag && !reply("continue")) | |
564 | done(1); | |
565 | i = NTREC*TP_BSIZE; | |
566 | bzero(tbf, i); | |
567 | #ifdef RRESTOR | |
568 | if (rmtseek(i, 1) < 0) | |
569 | #else | |
570 | if (lseek(mt, i, 1) == (long)-1) | |
571 | #endif | |
572 | { | |
573 | fprintf(stderr, "continuation failed\n"); | |
574 | done(1); | |
575 | } | |
576 | } | |
577 | if (i == 0) { | |
2cb5dabb KM |
578 | if (pipein) { |
579 | bcopy((char *)&endoftapemark, b, | |
580 | (long)TP_BSIZE); | |
581 | flsht(); | |
582 | return; | |
583 | } | |
f78e116c KM |
584 | newvol = volno + 1; |
585 | volno = 0; | |
586 | getvol(newvol); | |
587 | readtape(b); | |
588 | return; | |
589 | } | |
590 | } | |
591 | bcopy(&tbf[(bct++*TP_BSIZE)], b, (long)TP_BSIZE); | |
2cb5dabb | 592 | blksread++; |
f78e116c KM |
593 | } |
594 | ||
595 | flsht() | |
596 | { | |
597 | ||
598 | bct = NTREC+1; | |
599 | } | |
600 | ||
f78e116c KM |
601 | closemt() |
602 | { | |
603 | if (mt < 0) | |
604 | return; | |
605 | #ifdef RRESTOR | |
606 | rmtclose(); | |
607 | #else | |
768eb687 | 608 | (void) close(mt); |
f78e116c KM |
609 | #endif |
610 | } | |
611 | ||
612 | checkvol(b, t) | |
613 | struct s_spcl *b; | |
614 | long t; | |
615 | { | |
616 | ||
2cb5dabb KM |
617 | if (b->c_volume != t) |
618 | return(FAIL); | |
619 | return(GOOD); | |
f78e116c KM |
620 | } |
621 | ||
622 | readhdr(b) | |
623 | struct s_spcl *b; | |
624 | { | |
625 | ||
5c5f44c7 | 626 | if (gethead(b) == FAIL) { |
768eb687 | 627 | dprintf(stdout, "readhdr fails at %d blocks\n", blksread); |
2cb5dabb | 628 | return(FAIL); |
5c5f44c7 | 629 | } |
2cb5dabb | 630 | return(GOOD); |
f78e116c KM |
631 | } |
632 | ||
633 | /* | |
634 | * read the tape into buf, then return whether or | |
635 | * or not it is a header block. | |
636 | */ | |
637 | gethead(buf) | |
638 | struct s_spcl *buf; | |
639 | { | |
5c5f44c7 | 640 | long i; |
f78e116c KM |
641 | union u_ospcl { |
642 | char dummy[TP_BSIZE]; | |
643 | struct s_ospcl { | |
2cb5dabb KM |
644 | long c_type; |
645 | long c_date; | |
646 | long c_ddate; | |
647 | long c_volume; | |
648 | long c_tapea; | |
cf6db0ab | 649 | u_short c_inumber; |
2cb5dabb KM |
650 | long c_magic; |
651 | long c_checksum; | |
f78e116c KM |
652 | struct odinode { |
653 | unsigned short odi_mode; | |
cf6db0ab KM |
654 | u_short odi_nlink; |
655 | u_short odi_uid; | |
656 | u_short odi_gid; | |
2cb5dabb KM |
657 | long odi_size; |
658 | long odi_rdev; | |
f78e116c | 659 | char odi_addr[36]; |
2cb5dabb KM |
660 | long odi_atime; |
661 | long odi_mtime; | |
662 | long odi_ctime; | |
f78e116c | 663 | } c_dinode; |
2cb5dabb KM |
664 | long c_count; |
665 | char c_addr[256]; | |
f78e116c KM |
666 | } s_ospcl; |
667 | } u_ospcl; | |
668 | ||
669 | if (!cvtflag) { | |
670 | readtape((char *)buf); | |
5c5f44c7 | 671 | if (buf->c_magic != NFS_MAGIC || checksum((int *)buf) == FAIL) |
2cb5dabb | 672 | return(FAIL); |
5c5f44c7 | 673 | goto good; |
f78e116c KM |
674 | } |
675 | readtape((char *)(&u_ospcl.s_ospcl)); | |
676 | bzero((char *)buf, (long)TP_BSIZE); | |
677 | buf->c_type = u_ospcl.s_ospcl.c_type; | |
678 | buf->c_date = u_ospcl.s_ospcl.c_date; | |
679 | buf->c_ddate = u_ospcl.s_ospcl.c_ddate; | |
680 | buf->c_volume = u_ospcl.s_ospcl.c_volume; | |
681 | buf->c_tapea = u_ospcl.s_ospcl.c_tapea; | |
682 | buf->c_inumber = u_ospcl.s_ospcl.c_inumber; | |
683 | buf->c_checksum = u_ospcl.s_ospcl.c_checksum; | |
684 | buf->c_magic = u_ospcl.s_ospcl.c_magic; | |
685 | buf->c_dinode.di_mode = u_ospcl.s_ospcl.c_dinode.odi_mode; | |
686 | buf->c_dinode.di_nlink = u_ospcl.s_ospcl.c_dinode.odi_nlink; | |
687 | buf->c_dinode.di_uid = u_ospcl.s_ospcl.c_dinode.odi_uid; | |
688 | buf->c_dinode.di_gid = u_ospcl.s_ospcl.c_dinode.odi_gid; | |
689 | buf->c_dinode.di_size = u_ospcl.s_ospcl.c_dinode.odi_size; | |
690 | buf->c_dinode.di_rdev = u_ospcl.s_ospcl.c_dinode.odi_rdev; | |
691 | buf->c_dinode.di_atime = u_ospcl.s_ospcl.c_dinode.odi_atime; | |
692 | buf->c_dinode.di_mtime = u_ospcl.s_ospcl.c_dinode.odi_mtime; | |
693 | buf->c_dinode.di_ctime = u_ospcl.s_ospcl.c_dinode.odi_ctime; | |
694 | buf->c_count = u_ospcl.s_ospcl.c_count; | |
2cb5dabb | 695 | bcopy(u_ospcl.s_ospcl.c_addr, buf->c_addr, (long)256); |
f78e116c | 696 | if (u_ospcl.s_ospcl.c_magic != OFS_MAGIC || |
5c5f44c7 | 697 | checksum((int *)(&u_ospcl.s_ospcl)) == FAIL) |
2cb5dabb | 698 | return(FAIL); |
f78e116c | 699 | buf->c_magic = NFS_MAGIC; |
5c5f44c7 KM |
700 | |
701 | good: | |
702 | switch (buf->c_type) { | |
703 | ||
704 | case TS_CLRI: | |
705 | case TS_BITS: | |
706 | /* | |
707 | * Have to patch up missing information in bit map headers | |
708 | */ | |
709 | buf->c_inumber = 0; | |
710 | buf->c_dinode.di_size = buf->c_count * TP_BSIZE; | |
711 | for (i = 0; i < buf->c_count; i++) | |
712 | buf->c_addr[i]++; | |
713 | break; | |
714 | ||
715 | case TS_TAPE: | |
716 | case TS_END: | |
717 | buf->c_inumber = 0; | |
718 | break; | |
719 | ||
720 | case TS_INODE: | |
721 | case TS_ADDR: | |
722 | break; | |
723 | ||
724 | default: | |
725 | panic("gethead: unknown inode type %d\n", buf->c_type); | |
726 | break; | |
727 | } | |
2cb5dabb KM |
728 | if (dflag) |
729 | accthdr(buf); | |
730 | return(GOOD); | |
731 | } | |
732 | ||
733 | /* | |
734 | * Check that a header is where it belongs and predict the next header | |
735 | */ | |
736 | accthdr(header) | |
737 | struct s_spcl *header; | |
738 | { | |
7851e15d | 739 | static ino_t previno = 0x7fffffff; |
2cb5dabb KM |
740 | static int prevtype; |
741 | static long predict; | |
742 | long blks, i; | |
743 | ||
5c5f44c7 KM |
744 | if (header->c_type == TS_TAPE) { |
745 | fprintf(stderr, "Volume header\n"); | |
746 | return; | |
747 | } | |
7851e15d | 748 | if (previno == 0x7fffffff) |
2cb5dabb KM |
749 | goto newcalc; |
750 | switch (prevtype) { | |
2cb5dabb | 751 | case TS_BITS: |
5c5f44c7 | 752 | fprintf(stderr, "Dump mask header"); |
2cb5dabb KM |
753 | break; |
754 | case TS_CLRI: | |
5c5f44c7 | 755 | fprintf(stderr, "Remove mask header"); |
2cb5dabb KM |
756 | break; |
757 | case TS_INODE: | |
5c5f44c7 | 758 | fprintf(stderr, "File header, ino %d", previno); |
2cb5dabb KM |
759 | break; |
760 | case TS_ADDR: | |
5c5f44c7 | 761 | fprintf(stderr, "File continuation header, ino %d", previno); |
2cb5dabb KM |
762 | break; |
763 | case TS_END: | |
5c5f44c7 | 764 | fprintf(stderr, "End of tape header"); |
2cb5dabb KM |
765 | break; |
766 | } | |
2cb5dabb KM |
767 | if (predict != blksread - 1) |
768 | fprintf(stderr, "; predicted %d blocks, got %d blocks", | |
769 | predict, blksread - 1); | |
770 | fprintf(stderr, "\n"); | |
771 | newcalc: | |
772 | blks = 0; | |
5c5f44c7 | 773 | if (header->c_type != TS_END) |
2cb5dabb KM |
774 | for (i = 0; i < header->c_count; i++) |
775 | if (header->c_addr[i] != 0) | |
776 | blks++; | |
777 | predict = blks; | |
778 | blksread = 0; | |
779 | prevtype = header->c_type; | |
780 | previno = header->c_inumber; | |
f78e116c KM |
781 | } |
782 | ||
783 | /* | |
784 | * Find an inode header. | |
785 | * Complain if had to skip, and complain is set. | |
786 | */ | |
787 | findinode(header, complain) | |
788 | struct s_spcl *header; | |
789 | int complain; | |
790 | { | |
2cb5dabb | 791 | static long skipcnt = 0; |
f78e116c KM |
792 | |
793 | curfile.name = "<name unknown>"; | |
794 | curfile.action = UNKNOWN; | |
795 | curfile.dip = (struct dinode *)NIL; | |
796 | curfile.ino = 0; | |
2cb5dabb KM |
797 | if (ishead(header) == FAIL) { |
798 | skipcnt++; | |
799 | while (gethead(header) == FAIL) | |
f78e116c | 800 | skipcnt++; |
2cb5dabb | 801 | } |
f78e116c | 802 | for (;;) { |
2cb5dabb | 803 | if (checktype(header, TS_INODE) == GOOD) { |
f78e116c KM |
804 | curfile.dip = &header->c_dinode; |
805 | curfile.ino = header->c_inumber; | |
806 | break; | |
807 | } | |
2cb5dabb | 808 | if (checktype(header, TS_END) == GOOD) { |
f78e116c KM |
809 | curfile.ino = maxino; |
810 | break; | |
811 | } | |
2cb5dabb | 812 | if (checktype(header, TS_CLRI) == GOOD) { |
f78e116c | 813 | curfile.name = "<file removal list>"; |
e108d3a2 | 814 | break; |
f78e116c | 815 | } |
2cb5dabb | 816 | if (checktype(header, TS_BITS) == GOOD) { |
f78e116c | 817 | curfile.name = "<file dump list>"; |
e108d3a2 | 818 | break; |
f78e116c | 819 | } |
2cb5dabb | 820 | while (gethead(header) == FAIL) |
f78e116c KM |
821 | skipcnt++; |
822 | } | |
823 | if (skipcnt > 0 && complain) | |
824 | fprintf(stderr, "resync restor, skipped %d blocks\n", skipcnt); | |
825 | skipcnt = 0; | |
826 | } | |
827 | ||
828 | /* | |
829 | * return whether or not the buffer contains a header block | |
830 | */ | |
831 | ishead(buf) | |
832 | struct s_spcl *buf; | |
833 | { | |
834 | ||
835 | if (buf->c_magic != NFS_MAGIC) | |
2cb5dabb KM |
836 | return(FAIL); |
837 | return(GOOD); | |
f78e116c KM |
838 | } |
839 | ||
840 | checktype(b, t) | |
841 | struct s_spcl *b; | |
842 | int t; | |
843 | { | |
844 | ||
2cb5dabb KM |
845 | if (b->c_type != t) |
846 | return(FAIL); | |
847 | return(GOOD); | |
f78e116c KM |
848 | } |
849 | ||
850 | checksum(b) | |
851 | register int *b; | |
852 | { | |
853 | register int i, j; | |
854 | ||
855 | j = sizeof(union u_spcl) / sizeof(int); | |
856 | i = 0; | |
857 | do | |
858 | i += *b++; | |
859 | while (--j); | |
860 | if (i != CHECKSUM) { | |
861 | fprintf(stderr, "Checksum error %o, inode %d file %s\n", i, | |
862 | curfile.ino, curfile.name); | |
2cb5dabb | 863 | return(FAIL); |
f78e116c | 864 | } |
2cb5dabb | 865 | return(GOOD); |
f78e116c KM |
866 | } |
867 | ||
868 | #ifdef RRESTOR | |
74025ab9 | 869 | /* VARARGS1 */ |
f78e116c KM |
870 | msg(cp, a1, a2, a3) |
871 | char *cp; | |
872 | { | |
873 | ||
874 | fprintf(stderr, cp, a1, a2, a3); | |
875 | } | |
876 | #endif RRESTOR |