Commit | Line | Data |
---|---|---|
f78e116c | 1 | #ifndef lint |
ebd1f727 | 2 | static char sccsid[] = "@(#)tape.c 3.21 (Berkeley) 83/08/11"; |
f78e116c KM |
3 | #endif |
4 | ||
ebd1f727 SL |
5 | /* Copyright (c) 1983 Regents of the University of California */ |
6 | ||
f78e116c KM |
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 | 12 | #include <setjmp.h> |
a7b24fe9 | 13 | #include <sys/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; | |
170639fd | 23 | static long tapesread; |
2cb5dabb KM |
24 | static jmp_buf restart; |
25 | static int gettingfile = 0; /* restart has a valid frame */ | |
26 | ||
27 | static int ofile; | |
28 | static char *map; | |
29 | static char lnkbuf[MAXPATHLEN + 1]; | |
30 | static int pathlen; | |
f78e116c KM |
31 | |
32 | /* | |
33 | * Set up an input source | |
34 | */ | |
35 | setinput(source) | |
36 | char *source; | |
37 | { | |
e9e7ecc4 | 38 | #ifdef RRESTORE |
f78e116c | 39 | char *host; |
e9e7ecc4 | 40 | #endif RRESTORE |
f78e116c | 41 | |
9c695c61 | 42 | terminal = stdin; |
e9e7ecc4 | 43 | #ifdef RRESTORE |
f78e116c KM |
44 | host = source; |
45 | magtape = index(host, ':'); | |
46 | if (magtape == 0) { | |
47 | nohost: | |
5c5f44c7 | 48 | msg("need keyletter ``f'' and device ``host:tape''\n"); |
f78e116c KM |
49 | done(1); |
50 | } | |
51 | *magtape++ = '\0'; | |
52 | if (rmthost(host) == 0) | |
53 | done(1); | |
54 | setuid(getuid()); /* no longer need or want root privileges */ | |
55 | #else | |
9c695c61 | 56 | if (strcmp(source, "-") == 0) { |
b677c5d7 KM |
57 | /* |
58 | * Since input is coming from a pipe we must establish | |
59 | * our own connection to the terminal. | |
60 | */ | |
61 | terminal = fopen("/dev/tty", "r"); | |
62 | if (terminal == NULL) { | |
63 | perror("open(\"/dev/tty\")"); | |
64 | done(1); | |
65 | } | |
2cb5dabb | 66 | pipein++; |
2cb5dabb | 67 | } |
f78e116c | 68 | magtape = source; |
e9e7ecc4 | 69 | #endif RRESTORE |
f78e116c KM |
70 | } |
71 | ||
72 | /* | |
73 | * Verify that the tape drive can be accessed and | |
74 | * that it actually is a dump tape. | |
75 | */ | |
76 | setup() | |
77 | { | |
2cb5dabb | 78 | int i, j, *ip; |
f78e116c KM |
79 | struct stat stbuf; |
80 | extern char *ctime(); | |
81 | extern int xtrmap(), xtrmapskip(); | |
82 | ||
83 | vprintf(stdout, "Verify tape and initialize maps\n"); | |
e9e7ecc4 | 84 | #ifdef RRESTORE |
f78e116c KM |
85 | if ((mt = rmtopen(magtape, 0)) < 0) |
86 | #else | |
2cb5dabb KM |
87 | if (pipein) |
88 | mt = 0; | |
89 | else if ((mt = open(magtape, 0)) < 0) | |
f78e116c KM |
90 | #endif |
91 | { | |
e9e7ecc4 | 92 | perror(magtape); |
f78e116c KM |
93 | done(1); |
94 | } | |
768eb687 KM |
95 | volno = 1; |
96 | setdumpnum(); | |
f78e116c | 97 | flsht(); |
5c5f44c7 | 98 | if (gethead(&spcl) == FAIL) { |
f78e116c KM |
99 | bct--; /* push back this block */ |
100 | cvtflag++; | |
5c5f44c7 | 101 | if (gethead(&spcl) == FAIL) { |
f78e116c KM |
102 | fprintf(stderr, "Tape is not a dump tape\n"); |
103 | done(1); | |
104 | } | |
105 | fprintf(stderr, "Converting to new file system format.\n"); | |
106 | } | |
2cb5dabb KM |
107 | if (pipein) { |
108 | endoftapemark.s_spcl.c_magic = cvtflag ? OFS_MAGIC : NFS_MAGIC; | |
109 | endoftapemark.s_spcl.c_type = TS_END; | |
110 | ip = (int *)&endoftapemark; | |
111 | j = sizeof(union u_spcl) / sizeof(int); | |
112 | i = 0; | |
113 | do | |
114 | i += *ip++; | |
115 | while (--j); | |
116 | endoftapemark.s_spcl.c_checksum = CHECKSUM - i; | |
117 | } | |
6a8e228c KM |
118 | if (vflag || command == 't') { |
119 | fprintf(stdout, "Dump date: %s", ctime(&spcl.c_date)); | |
120 | fprintf(stdout, "Dumped from: %s", ctime(&spcl.c_ddate)); | |
121 | } | |
f78e116c | 122 | dumptime = spcl.c_ddate; |
2cb5dabb | 123 | dumpdate = spcl.c_date; |
f78e116c | 124 | if (stat(".", &stbuf) < 0) { |
e9e7ecc4 | 125 | perror("cannot stat ."); |
f78e116c KM |
126 | done(1); |
127 | } | |
128 | fssize = stbuf.st_blksize; | |
129 | if (fssize <= 0 || ((fssize - 1) & fssize) != 0) { | |
130 | fprintf(stderr, "bad block size %d\n", fssize); | |
131 | done(1); | |
132 | } | |
2cb5dabb | 133 | if (checkvol(&spcl, (long)1) == FAIL) { |
f78e116c KM |
134 | fprintf(stderr, "Tape is not volume 1 of the dump\n"); |
135 | done(1); | |
136 | } | |
2cb5dabb KM |
137 | if (readhdr(&spcl) == FAIL) |
138 | panic("no header after volume mark!\n"); | |
139 | findinode(&spcl, 1); | |
140 | if (checktype(&spcl, TS_CLRI) == FAIL) { | |
f78e116c KM |
141 | fprintf(stderr, "Cannot find file removal list\n"); |
142 | done(1); | |
143 | } | |
2cb5dabb | 144 | maxino = (spcl.c_count * TP_BSIZE * NBBY) + 1; |
768eb687 | 145 | dprintf(stdout, "maxino = %d\n", maxino); |
7851e15d | 146 | map = calloc((unsigned)1, (unsigned)howmany(maxino, NBBY)); |
f78e116c KM |
147 | if (map == (char *)NIL) |
148 | panic("no memory for file removal list\n"); | |
cf6db0ab | 149 | clrimap = map; |
f78e116c KM |
150 | curfile.action = USING; |
151 | getfile(xtrmap, xtrmapskip); | |
2cb5dabb | 152 | if (checktype(&spcl, TS_BITS) == FAIL) { |
f78e116c KM |
153 | fprintf(stderr, "Cannot find file dump list\n"); |
154 | done(1); | |
155 | } | |
7851e15d | 156 | map = calloc((unsigned)1, (unsigned)howmany(maxino, NBBY)); |
f78e116c KM |
157 | if (map == (char *)NULL) |
158 | panic("no memory for file dump list\n"); | |
cf6db0ab | 159 | dumpmap = map; |
f78e116c KM |
160 | curfile.action = USING; |
161 | getfile(xtrmap, xtrmapskip); | |
f78e116c KM |
162 | } |
163 | ||
170639fd KM |
164 | /* |
165 | * Prompt user to load a new dump volume. | |
166 | * "Nextvol" is the next suggested volume to use. | |
167 | * This suggested volume is enforced when doing full | |
168 | * or incremental restores, but can be overrridden by | |
169 | * the user when only extracting a subset of the files. | |
170 | */ | |
f78e116c KM |
171 | getvol(nextvol) |
172 | long nextvol; | |
173 | { | |
174 | long newvol; | |
170639fd | 175 | long savecnt, i; |
f78e116c KM |
176 | union u_spcl tmpspcl; |
177 | # define tmpbuf tmpspcl.s_spcl | |
178 | ||
170639fd KM |
179 | if (nextvol == 1) |
180 | tapesread = 0; | |
2cb5dabb | 181 | if (pipein) { |
e108d3a2 | 182 | if (nextvol != 1) |
2cb5dabb | 183 | panic("Changing volumes on pipe input?\n"); |
e108d3a2 KM |
184 | if (volno == 1) |
185 | return; | |
186 | goto gethdr; | |
2cb5dabb KM |
187 | } |
188 | savecnt = blksread; | |
f78e116c | 189 | again: |
e108d3a2 KM |
190 | if (pipein) |
191 | done(1); /* pipes do not get a second chance */ | |
f78e116c KM |
192 | if (command == 'R' || command == 'r' || curfile.action != SKIP) |
193 | newvol = nextvol; | |
194 | else | |
195 | newvol = 0; | |
196 | while (newvol <= 0) { | |
170639fd KM |
197 | if (tapesread == 0) { |
198 | fprintf(stderr, "%s%s%s%s%s", | |
199 | "You have not read any tapes yet.\n", | |
200 | "Unless you know which volume your", | |
201 | " file(s) are on you should start\n", | |
202 | "with the last volume and work", | |
203 | " towards towards the first.\n"); | |
204 | } else { | |
205 | fprintf(stderr, "You have read volumes"); | |
206 | strcpy(tbf, ": "); | |
207 | for (i = 1; i < 32; i++) | |
208 | if (tapesread & (1 << i)) { | |
209 | fprintf(stderr, "%s%d", tbf, i); | |
210 | strcpy(tbf, ", "); | |
211 | } | |
212 | fprintf(stderr, "\n"); | |
213 | } | |
538cb7bb | 214 | do { |
b677c5d7 KM |
215 | fprintf(stderr, "Specify next volume #: "); |
216 | (void) fflush(stderr); | |
217 | (void) fgets(tbf, BUFSIZ, terminal); | |
218 | } while (!feof(terminal) && tbf[0] == '\n'); | |
219 | if (feof(terminal)) | |
538cb7bb | 220 | done(1); |
f78e116c KM |
221 | newvol = atoi(tbf); |
222 | if (newvol <= 0) { | |
223 | fprintf(stderr, | |
224 | "Volume numbers are positive numerics\n"); | |
225 | } | |
226 | } | |
170639fd KM |
227 | if (newvol == volno) { |
228 | tapesread |= 1 << volno; | |
f78e116c | 229 | return; |
170639fd | 230 | } |
f78e116c | 231 | closemt(); |
5c5f44c7 | 232 | fprintf(stderr, "Mount tape volume %d then type return ", newvol); |
b677c5d7 KM |
233 | (void) fflush(stderr); |
234 | while (getc(terminal) != '\n') | |
f78e116c | 235 | ; |
e9e7ecc4 | 236 | #ifdef RRESTORE |
f78e116c KM |
237 | if ((mt = rmtopen(magtape, 0)) == -1) |
238 | #else | |
239 | if ((mt = open(magtape, 0)) == -1) | |
240 | #endif | |
241 | { | |
242 | fprintf(stderr, "Cannot open tape!\n"); | |
243 | goto again; | |
244 | } | |
e108d3a2 | 245 | gethdr: |
f78e116c | 246 | volno = newvol; |
768eb687 | 247 | setdumpnum(); |
f78e116c | 248 | flsht(); |
2cb5dabb | 249 | if (readhdr(&tmpbuf) == FAIL) { |
f78e116c KM |
250 | fprintf(stderr, "tape is not dump tape\n"); |
251 | volno = 0; | |
252 | goto again; | |
253 | } | |
2cb5dabb | 254 | if (checkvol(&tmpbuf, volno) == FAIL) { |
f78e116c KM |
255 | fprintf(stderr, "Wrong volume (%d)\n", tmpbuf.c_volume); |
256 | volno = 0; | |
257 | goto again; | |
258 | } | |
2cb5dabb | 259 | if (tmpbuf.c_date != dumpdate || tmpbuf.c_ddate != dumptime) { |
3dbddecd KM |
260 | fprintf(stderr, "Wrong dump date\n\tgot: %s", |
261 | ctime(&tmpbuf.c_date)); | |
262 | fprintf(stderr, "\twanted: %s", ctime(&dumpdate)); | |
2cb5dabb KM |
263 | volno = 0; |
264 | goto again; | |
265 | } | |
170639fd | 266 | tapesread |= 1 << volno; |
5c5f44c7 | 267 | blksread = savecnt; |
f78e116c KM |
268 | if (curfile.action == USING) { |
269 | if (volno == 1) | |
270 | panic("active file into volume 1\n"); | |
271 | return; | |
272 | } | |
5c5f44c7 | 273 | (void) gethead(&spcl); |
f78e116c KM |
274 | findinode(&spcl, curfile.action == UNKNOWN ? 1 : 0); |
275 | if (gettingfile) { | |
276 | gettingfile = 0; | |
277 | longjmp(restart, 1); | |
278 | } | |
279 | } | |
280 | ||
768eb687 KM |
281 | /* |
282 | * handle multiple dumps per tape by skipping forward to the | |
283 | * appropriate one. | |
284 | */ | |
285 | setdumpnum() | |
286 | { | |
287 | struct mtop tcom; | |
288 | ||
289 | if (dumpnum == 1 || volno != 1) | |
290 | return; | |
291 | if (pipein) { | |
292 | fprintf(stderr, "Cannot have multiple dumps on pipe input\n"); | |
293 | done(1); | |
294 | } | |
295 | tcom.mt_op = MTFSF; | |
296 | tcom.mt_count = dumpnum - 1; | |
e9e7ecc4 | 297 | #ifdef RRESTORE |
768eb687 KM |
298 | rmtioctl(MTFSF, dumpnum - 1); |
299 | #else | |
538cb7bb | 300 | if (ioctl(mt, (int)MTIOCTOP, (char *)&tcom) < 0) |
768eb687 KM |
301 | perror("ioctl MTFSF"); |
302 | #endif | |
303 | } | |
304 | ||
f78e116c KM |
305 | extractfile(name) |
306 | char *name; | |
307 | { | |
308 | int mode; | |
309 | time_t timep[2]; | |
310 | struct entry *ep; | |
311 | extern int xtrlnkfile(), xtrlnkskip(); | |
312 | extern int xtrfile(), xtrskip(); | |
313 | ||
314 | curfile.name = name; | |
315 | curfile.action = USING; | |
316 | timep[0] = curfile.dip->di_atime; | |
317 | timep[1] = curfile.dip->di_mtime; | |
318 | mode = curfile.dip->di_mode; | |
319 | switch (mode & IFMT) { | |
320 | ||
321 | default: | |
322 | fprintf(stderr, "%s: unknown file mode 0%o\n", name, mode); | |
323 | skipfile(); | |
324 | return (FAIL); | |
325 | ||
326 | case IFDIR: | |
327 | if (mflag) { | |
328 | ep = lookupname(name); | |
329 | if (ep == NIL || ep->e_flags & EXTRACT) | |
330 | panic("unextracted directory %s\n", name); | |
331 | skipfile(); | |
332 | return (GOOD); | |
333 | } | |
334 | vprintf(stdout, "extract file %s\n", name); | |
335 | return (genliteraldir(name, curfile.ino)); | |
336 | ||
337 | case IFLNK: | |
338 | lnkbuf[0] = '\0'; | |
339 | pathlen = 0; | |
340 | getfile(xtrlnkfile, xtrlnkskip); | |
341 | if (pathlen == 0) { | |
342 | vprintf(stdout, | |
343 | "%s: zero length symbolic link (ignored)\n", name); | |
344 | } else if (symlink(lnkbuf, name) < 0) { | |
e9e7ecc4 KM |
345 | fprintf(stderr, "%s: ", name); |
346 | (void) fflush(stderr); | |
347 | perror("cannot create symbolic link"); | |
f78e116c KM |
348 | return (FAIL); |
349 | } else | |
350 | vprintf(stdout, "extract symbolic link %s\n", name); | |
351 | return (GOOD); | |
352 | ||
353 | case IFCHR: | |
354 | case IFBLK: | |
355 | vprintf(stdout, "extract special file %s\n", name); | |
356 | if (mknod(name, mode, (int)curfile.dip->di_rdev) < 0) { | |
e9e7ecc4 KM |
357 | fprintf(stderr, "%s: ", name); |
358 | (void) fflush(stderr); | |
359 | perror("cannot create special file"); | |
f78e116c KM |
360 | skipfile(); |
361 | return (FAIL); | |
362 | } | |
768eb687 KM |
363 | (void) chown(name, curfile.dip->di_uid, curfile.dip->di_gid); |
364 | (void) chmod(name, mode); | |
f78e116c KM |
365 | skipfile(); |
366 | utime(name, timep); | |
367 | return (GOOD); | |
368 | ||
369 | case IFREG: | |
370 | vprintf(stdout, "extract file %s\n", name); | |
15aeb519 | 371 | if ((ofile = creat(name, 0666)) < 0) { |
e9e7ecc4 KM |
372 | fprintf(stderr, "%s: ", name); |
373 | (void) fflush(stderr); | |
374 | perror("cannot create file"); | |
f78e116c KM |
375 | skipfile(); |
376 | return (FAIL); | |
377 | } | |
768eb687 KM |
378 | (void) fchown(ofile, curfile.dip->di_uid, curfile.dip->di_gid); |
379 | (void) fchmod(ofile, mode); | |
f78e116c | 380 | getfile(xtrfile, xtrskip); |
768eb687 | 381 | (void) close(ofile); |
f78e116c KM |
382 | utime(name, timep); |
383 | return (GOOD); | |
384 | } | |
385 | /* NOTREACHED */ | |
386 | } | |
387 | ||
e108d3a2 KM |
388 | /* |
389 | * skip over bit maps on the tape | |
390 | */ | |
391 | skipmaps() | |
392 | { | |
393 | ||
394 | while (checktype(&spcl, TS_CLRI) == GOOD || | |
395 | checktype(&spcl, TS_BITS) == GOOD) | |
396 | skipfile(); | |
397 | } | |
398 | ||
399 | /* | |
400 | * skip over a file on the tape | |
401 | */ | |
f78e116c KM |
402 | skipfile() |
403 | { | |
404 | extern int null(); | |
405 | ||
406 | curfile.action = SKIP; | |
407 | getfile(null, null); | |
408 | } | |
409 | ||
410 | /* | |
411 | * Do the file extraction, calling the supplied functions | |
412 | * with the blocks | |
413 | */ | |
414 | getfile(f1, f2) | |
415 | int (*f2)(), (*f1)(); | |
416 | { | |
417 | register int i; | |
418 | int curblk = 0; | |
419 | off_t size = spcl.c_dinode.di_size; | |
420 | static char clearedbuf[MAXBSIZE]; | |
421 | char buf[MAXBSIZE / TP_BSIZE][TP_BSIZE]; | |
422 | ||
2cb5dabb | 423 | if (checktype(&spcl, TS_END) == GOOD) |
f78e116c | 424 | panic("ran off end of tape\n"); |
e108d3a2 | 425 | if (ishead(&spcl) == FAIL) |
f78e116c | 426 | panic("not at beginning of a file\n"); |
e108d3a2 | 427 | if (!gettingfile && setjmp(restart) != 0) |
f78e116c KM |
428 | return; |
429 | gettingfile++; | |
430 | loop: | |
431 | for (i = 0; i < spcl.c_count; i++) { | |
432 | if (spcl.c_addr[i]) { | |
433 | readtape(&buf[curblk++][0]); | |
434 | if (curblk == fssize / TP_BSIZE) { | |
435 | (*f1)(buf, size > TP_BSIZE ? | |
436 | (long) (fssize) : | |
437 | (curblk - 1) * TP_BSIZE + size); | |
438 | curblk = 0; | |
439 | } | |
440 | } else { | |
441 | if (curblk > 0) { | |
442 | (*f1)(buf, size > TP_BSIZE ? | |
443 | (long) (curblk * TP_BSIZE) : | |
444 | (curblk - 1) * TP_BSIZE + size); | |
445 | curblk = 0; | |
446 | } | |
447 | (*f2)(clearedbuf, size > TP_BSIZE ? | |
448 | (long) TP_BSIZE : size); | |
449 | } | |
9f13f26d KM |
450 | if ((size -= TP_BSIZE) <= 0) |
451 | break; | |
f78e116c | 452 | } |
5c5f44c7 | 453 | if (readhdr(&spcl) == GOOD && size > 0) { |
9f13f26d KM |
454 | if (checktype(&spcl, TS_ADDR) == GOOD) |
455 | goto loop; | |
768eb687 | 456 | dprintf(stdout, "Missing address (header) block for %s\n", |
f78e116c | 457 | curfile.name); |
f78e116c | 458 | } |
9f13f26d | 459 | if (curblk > 0) |
f78e116c | 460 | (*f1)(buf, (curblk * TP_BSIZE) + size); |
f78e116c KM |
461 | findinode(&spcl, 1); |
462 | gettingfile = 0; | |
463 | } | |
464 | ||
465 | /* | |
466 | * The next routines are called during file extraction to | |
467 | * put the data into the right form and place. | |
468 | */ | |
469 | xtrfile(buf, size) | |
470 | char *buf; | |
471 | long size; | |
472 | { | |
473 | ||
474 | if (write(ofile, buf, (int) size) == -1) { | |
475 | fprintf(stderr, "write error extracting inode %d, name %s\n", | |
476 | curfile.ino, curfile.name); | |
477 | perror("write"); | |
478 | done(1); | |
479 | } | |
480 | } | |
481 | ||
482 | xtrskip(buf, size) | |
483 | char *buf; | |
484 | long size; | |
485 | { | |
486 | ||
487 | #ifdef lint | |
488 | buf = buf; | |
489 | #endif | |
490 | if (lseek(ofile, size, 1) == (long)-1) { | |
491 | fprintf(stderr, "seek error extracting inode %d, name %s\n", | |
492 | curfile.ino, curfile.name); | |
493 | perror("lseek"); | |
494 | done(1); | |
495 | } | |
496 | } | |
497 | ||
498 | xtrlnkfile(buf, size) | |
499 | char *buf; | |
500 | long size; | |
501 | { | |
502 | ||
503 | pathlen += size; | |
504 | if (pathlen > MAXPATHLEN) { | |
505 | fprintf(stderr, "symbolic link name: %s->%s%s; too long %d\n", | |
506 | curfile.name, lnkbuf, buf, pathlen); | |
507 | done(1); | |
508 | } | |
538cb7bb | 509 | (void) strcat(lnkbuf, buf); |
f78e116c KM |
510 | } |
511 | ||
512 | xtrlnkskip(buf, size) | |
513 | char *buf; | |
514 | long size; | |
515 | { | |
516 | ||
517 | #ifdef lint | |
518 | buf = buf, size = size; | |
519 | #endif | |
520 | fprintf(stderr, "unallocated block in symbolic link %s\n", | |
521 | curfile.name); | |
522 | done(1); | |
523 | } | |
524 | ||
525 | xtrmap(buf, size) | |
526 | char *buf; | |
527 | long size; | |
528 | { | |
529 | ||
530 | bcopy(buf, map, size); | |
cf6db0ab | 531 | map += size; |
f78e116c KM |
532 | } |
533 | ||
534 | xtrmapskip(buf, size) | |
535 | char *buf; | |
536 | long size; | |
537 | { | |
538 | ||
539 | #ifdef lint | |
540 | buf = buf; | |
f78e116c KM |
541 | #endif |
542 | panic("hole in map\n"); | |
cf6db0ab | 543 | map += size; |
f78e116c KM |
544 | } |
545 | ||
546 | null() {;} | |
547 | ||
548 | /* | |
549 | * Do the tape i/o, dealing with volume changes | |
550 | * etc.. | |
551 | */ | |
552 | readtape(b) | |
553 | char *b; | |
554 | { | |
555 | register long i; | |
7851e15d KM |
556 | long rd, newvol; |
557 | int cnt; | |
f78e116c KM |
558 | |
559 | if (bct >= NTREC) { | |
560 | for (i = 0; i < NTREC; i++) | |
561 | ((struct s_spcl *)&tbf[i*TP_BSIZE])->c_magic = 0; | |
562 | bct = 0; | |
74025ab9 KM |
563 | cnt = NTREC*TP_BSIZE; |
564 | rd = 0; | |
565 | getmore: | |
e9e7ecc4 | 566 | #ifdef RRESTORE |
74025ab9 | 567 | i = rmtread(&tbf[rd], cnt); |
f78e116c | 568 | #else |
74025ab9 | 569 | i = read(mt, &tbf[rd], cnt); |
f78e116c | 570 | #endif |
74025ab9 KM |
571 | if (i > 0 && i != NTREC*TP_BSIZE) { |
572 | if (!pipein) | |
573 | panic("partial block read: %d should be %d\n", | |
574 | i, NTREC*TP_BSIZE); | |
575 | rd += i; | |
576 | cnt -= i; | |
577 | if (cnt > 0) | |
578 | goto getmore; | |
579 | i = rd; | |
580 | } | |
581 | if (i < 0) { | |
f78e116c KM |
582 | fprintf(stderr, "Tape read error while "); |
583 | switch (curfile.action) { | |
74025ab9 KM |
584 | default: |
585 | fprintf(stderr, "trying to set up tape\n"); | |
586 | break; | |
f78e116c KM |
587 | case UNKNOWN: |
588 | fprintf(stderr, "trying to resyncronize\n"); | |
589 | break; | |
590 | case USING: | |
591 | fprintf(stderr, "restoring %s\n", curfile.name); | |
592 | break; | |
593 | case SKIP: | |
594 | fprintf(stderr, "skipping over inode %d\n", | |
595 | curfile.ino); | |
596 | break; | |
597 | } | |
598 | if (!yflag && !reply("continue")) | |
599 | done(1); | |
600 | i = NTREC*TP_BSIZE; | |
601 | bzero(tbf, i); | |
e9e7ecc4 | 602 | #ifdef RRESTORE |
f78e116c KM |
603 | if (rmtseek(i, 1) < 0) |
604 | #else | |
605 | if (lseek(mt, i, 1) == (long)-1) | |
606 | #endif | |
607 | { | |
e9e7ecc4 | 608 | perror("continuation failed"); |
f78e116c KM |
609 | done(1); |
610 | } | |
611 | } | |
612 | if (i == 0) { | |
2cb5dabb KM |
613 | if (pipein) { |
614 | bcopy((char *)&endoftapemark, b, | |
615 | (long)TP_BSIZE); | |
616 | flsht(); | |
617 | return; | |
618 | } | |
f78e116c KM |
619 | newvol = volno + 1; |
620 | volno = 0; | |
621 | getvol(newvol); | |
622 | readtape(b); | |
623 | return; | |
624 | } | |
625 | } | |
626 | bcopy(&tbf[(bct++*TP_BSIZE)], b, (long)TP_BSIZE); | |
2cb5dabb | 627 | blksread++; |
f78e116c KM |
628 | } |
629 | ||
630 | flsht() | |
631 | { | |
632 | ||
633 | bct = NTREC+1; | |
634 | } | |
635 | ||
f78e116c KM |
636 | closemt() |
637 | { | |
638 | if (mt < 0) | |
639 | return; | |
e9e7ecc4 | 640 | #ifdef RRESTORE |
f78e116c KM |
641 | rmtclose(); |
642 | #else | |
768eb687 | 643 | (void) close(mt); |
f78e116c KM |
644 | #endif |
645 | } | |
646 | ||
647 | checkvol(b, t) | |
648 | struct s_spcl *b; | |
649 | long t; | |
650 | { | |
651 | ||
2cb5dabb KM |
652 | if (b->c_volume != t) |
653 | return(FAIL); | |
654 | return(GOOD); | |
f78e116c KM |
655 | } |
656 | ||
657 | readhdr(b) | |
658 | struct s_spcl *b; | |
659 | { | |
660 | ||
5c5f44c7 | 661 | if (gethead(b) == FAIL) { |
768eb687 | 662 | dprintf(stdout, "readhdr fails at %d blocks\n", blksread); |
2cb5dabb | 663 | return(FAIL); |
5c5f44c7 | 664 | } |
2cb5dabb | 665 | return(GOOD); |
f78e116c KM |
666 | } |
667 | ||
668 | /* | |
669 | * read the tape into buf, then return whether or | |
670 | * or not it is a header block. | |
671 | */ | |
672 | gethead(buf) | |
673 | struct s_spcl *buf; | |
674 | { | |
5c5f44c7 | 675 | long i; |
f78e116c KM |
676 | union u_ospcl { |
677 | char dummy[TP_BSIZE]; | |
678 | struct s_ospcl { | |
2cb5dabb KM |
679 | long c_type; |
680 | long c_date; | |
681 | long c_ddate; | |
682 | long c_volume; | |
683 | long c_tapea; | |
cf6db0ab | 684 | u_short c_inumber; |
2cb5dabb KM |
685 | long c_magic; |
686 | long c_checksum; | |
f78e116c KM |
687 | struct odinode { |
688 | unsigned short odi_mode; | |
cf6db0ab KM |
689 | u_short odi_nlink; |
690 | u_short odi_uid; | |
691 | u_short odi_gid; | |
2cb5dabb KM |
692 | long odi_size; |
693 | long odi_rdev; | |
f78e116c | 694 | char odi_addr[36]; |
2cb5dabb KM |
695 | long odi_atime; |
696 | long odi_mtime; | |
697 | long odi_ctime; | |
f78e116c | 698 | } c_dinode; |
2cb5dabb KM |
699 | long c_count; |
700 | char c_addr[256]; | |
f78e116c KM |
701 | } s_ospcl; |
702 | } u_ospcl; | |
703 | ||
704 | if (!cvtflag) { | |
705 | readtape((char *)buf); | |
5c5f44c7 | 706 | if (buf->c_magic != NFS_MAGIC || checksum((int *)buf) == FAIL) |
2cb5dabb | 707 | return(FAIL); |
5c5f44c7 | 708 | goto good; |
f78e116c KM |
709 | } |
710 | readtape((char *)(&u_ospcl.s_ospcl)); | |
711 | bzero((char *)buf, (long)TP_BSIZE); | |
712 | buf->c_type = u_ospcl.s_ospcl.c_type; | |
713 | buf->c_date = u_ospcl.s_ospcl.c_date; | |
714 | buf->c_ddate = u_ospcl.s_ospcl.c_ddate; | |
715 | buf->c_volume = u_ospcl.s_ospcl.c_volume; | |
716 | buf->c_tapea = u_ospcl.s_ospcl.c_tapea; | |
717 | buf->c_inumber = u_ospcl.s_ospcl.c_inumber; | |
718 | buf->c_checksum = u_ospcl.s_ospcl.c_checksum; | |
719 | buf->c_magic = u_ospcl.s_ospcl.c_magic; | |
720 | buf->c_dinode.di_mode = u_ospcl.s_ospcl.c_dinode.odi_mode; | |
721 | buf->c_dinode.di_nlink = u_ospcl.s_ospcl.c_dinode.odi_nlink; | |
722 | buf->c_dinode.di_uid = u_ospcl.s_ospcl.c_dinode.odi_uid; | |
723 | buf->c_dinode.di_gid = u_ospcl.s_ospcl.c_dinode.odi_gid; | |
724 | buf->c_dinode.di_size = u_ospcl.s_ospcl.c_dinode.odi_size; | |
725 | buf->c_dinode.di_rdev = u_ospcl.s_ospcl.c_dinode.odi_rdev; | |
726 | buf->c_dinode.di_atime = u_ospcl.s_ospcl.c_dinode.odi_atime; | |
727 | buf->c_dinode.di_mtime = u_ospcl.s_ospcl.c_dinode.odi_mtime; | |
728 | buf->c_dinode.di_ctime = u_ospcl.s_ospcl.c_dinode.odi_ctime; | |
729 | buf->c_count = u_ospcl.s_ospcl.c_count; | |
2cb5dabb | 730 | bcopy(u_ospcl.s_ospcl.c_addr, buf->c_addr, (long)256); |
f78e116c | 731 | if (u_ospcl.s_ospcl.c_magic != OFS_MAGIC || |
5c5f44c7 | 732 | checksum((int *)(&u_ospcl.s_ospcl)) == FAIL) |
2cb5dabb | 733 | return(FAIL); |
f78e116c | 734 | buf->c_magic = NFS_MAGIC; |
5c5f44c7 KM |
735 | |
736 | good: | |
737 | switch (buf->c_type) { | |
738 | ||
739 | case TS_CLRI: | |
740 | case TS_BITS: | |
741 | /* | |
742 | * Have to patch up missing information in bit map headers | |
743 | */ | |
744 | buf->c_inumber = 0; | |
745 | buf->c_dinode.di_size = buf->c_count * TP_BSIZE; | |
746 | for (i = 0; i < buf->c_count; i++) | |
747 | buf->c_addr[i]++; | |
748 | break; | |
749 | ||
750 | case TS_TAPE: | |
751 | case TS_END: | |
752 | buf->c_inumber = 0; | |
753 | break; | |
754 | ||
755 | case TS_INODE: | |
756 | case TS_ADDR: | |
757 | break; | |
758 | ||
759 | default: | |
760 | panic("gethead: unknown inode type %d\n", buf->c_type); | |
761 | break; | |
762 | } | |
2cb5dabb KM |
763 | if (dflag) |
764 | accthdr(buf); | |
765 | return(GOOD); | |
766 | } | |
767 | ||
768 | /* | |
769 | * Check that a header is where it belongs and predict the next header | |
770 | */ | |
771 | accthdr(header) | |
772 | struct s_spcl *header; | |
773 | { | |
7851e15d | 774 | static ino_t previno = 0x7fffffff; |
2cb5dabb KM |
775 | static int prevtype; |
776 | static long predict; | |
777 | long blks, i; | |
778 | ||
5c5f44c7 KM |
779 | if (header->c_type == TS_TAPE) { |
780 | fprintf(stderr, "Volume header\n"); | |
781 | return; | |
782 | } | |
7851e15d | 783 | if (previno == 0x7fffffff) |
2cb5dabb KM |
784 | goto newcalc; |
785 | switch (prevtype) { | |
2cb5dabb | 786 | case TS_BITS: |
5c5f44c7 | 787 | fprintf(stderr, "Dump mask header"); |
2cb5dabb KM |
788 | break; |
789 | case TS_CLRI: | |
5c5f44c7 | 790 | fprintf(stderr, "Remove mask header"); |
2cb5dabb KM |
791 | break; |
792 | case TS_INODE: | |
5c5f44c7 | 793 | fprintf(stderr, "File header, ino %d", previno); |
2cb5dabb KM |
794 | break; |
795 | case TS_ADDR: | |
5c5f44c7 | 796 | fprintf(stderr, "File continuation header, ino %d", previno); |
2cb5dabb KM |
797 | break; |
798 | case TS_END: | |
5c5f44c7 | 799 | fprintf(stderr, "End of tape header"); |
2cb5dabb KM |
800 | break; |
801 | } | |
2cb5dabb KM |
802 | if (predict != blksread - 1) |
803 | fprintf(stderr, "; predicted %d blocks, got %d blocks", | |
804 | predict, blksread - 1); | |
805 | fprintf(stderr, "\n"); | |
806 | newcalc: | |
807 | blks = 0; | |
5c5f44c7 | 808 | if (header->c_type != TS_END) |
2cb5dabb KM |
809 | for (i = 0; i < header->c_count; i++) |
810 | if (header->c_addr[i] != 0) | |
811 | blks++; | |
812 | predict = blks; | |
813 | blksread = 0; | |
814 | prevtype = header->c_type; | |
815 | previno = header->c_inumber; | |
f78e116c KM |
816 | } |
817 | ||
818 | /* | |
819 | * Find an inode header. | |
820 | * Complain if had to skip, and complain is set. | |
821 | */ | |
822 | findinode(header, complain) | |
823 | struct s_spcl *header; | |
824 | int complain; | |
825 | { | |
2cb5dabb | 826 | static long skipcnt = 0; |
f78e116c KM |
827 | |
828 | curfile.name = "<name unknown>"; | |
829 | curfile.action = UNKNOWN; | |
830 | curfile.dip = (struct dinode *)NIL; | |
831 | curfile.ino = 0; | |
2cb5dabb KM |
832 | if (ishead(header) == FAIL) { |
833 | skipcnt++; | |
834 | while (gethead(header) == FAIL) | |
f78e116c | 835 | skipcnt++; |
2cb5dabb | 836 | } |
f78e116c | 837 | for (;;) { |
2cb5dabb | 838 | if (checktype(header, TS_INODE) == GOOD) { |
f78e116c KM |
839 | curfile.dip = &header->c_dinode; |
840 | curfile.ino = header->c_inumber; | |
841 | break; | |
842 | } | |
2cb5dabb | 843 | if (checktype(header, TS_END) == GOOD) { |
f78e116c KM |
844 | curfile.ino = maxino; |
845 | break; | |
846 | } | |
2cb5dabb | 847 | if (checktype(header, TS_CLRI) == GOOD) { |
f78e116c | 848 | curfile.name = "<file removal list>"; |
e108d3a2 | 849 | break; |
f78e116c | 850 | } |
2cb5dabb | 851 | if (checktype(header, TS_BITS) == GOOD) { |
f78e116c | 852 | curfile.name = "<file dump list>"; |
e108d3a2 | 853 | break; |
f78e116c | 854 | } |
2cb5dabb | 855 | while (gethead(header) == FAIL) |
f78e116c KM |
856 | skipcnt++; |
857 | } | |
858 | if (skipcnt > 0 && complain) | |
dd1900f1 | 859 | fprintf(stderr, "resync restore, skipped %d blocks\n", skipcnt); |
f78e116c KM |
860 | skipcnt = 0; |
861 | } | |
862 | ||
863 | /* | |
864 | * return whether or not the buffer contains a header block | |
865 | */ | |
866 | ishead(buf) | |
867 | struct s_spcl *buf; | |
868 | { | |
869 | ||
870 | if (buf->c_magic != NFS_MAGIC) | |
2cb5dabb KM |
871 | return(FAIL); |
872 | return(GOOD); | |
f78e116c KM |
873 | } |
874 | ||
875 | checktype(b, t) | |
876 | struct s_spcl *b; | |
877 | int t; | |
878 | { | |
879 | ||
2cb5dabb KM |
880 | if (b->c_type != t) |
881 | return(FAIL); | |
882 | return(GOOD); | |
f78e116c KM |
883 | } |
884 | ||
885 | checksum(b) | |
886 | register int *b; | |
887 | { | |
888 | register int i, j; | |
889 | ||
890 | j = sizeof(union u_spcl) / sizeof(int); | |
891 | i = 0; | |
892 | do | |
893 | i += *b++; | |
894 | while (--j); | |
895 | if (i != CHECKSUM) { | |
896 | fprintf(stderr, "Checksum error %o, inode %d file %s\n", i, | |
897 | curfile.ino, curfile.name); | |
2cb5dabb | 898 | return(FAIL); |
f78e116c | 899 | } |
2cb5dabb | 900 | return(GOOD); |
f78e116c KM |
901 | } |
902 | ||
e9e7ecc4 | 903 | #ifdef RRESTORE |
74025ab9 | 904 | /* VARARGS1 */ |
f78e116c KM |
905 | msg(cp, a1, a2, a3) |
906 | char *cp; | |
907 | { | |
908 | ||
909 | fprintf(stderr, cp, a1, a2, a3); | |
910 | } | |
e9e7ecc4 | 911 | #endif RRESTORE |