Commit | Line | Data |
---|---|---|
f78e116c | 1 | #ifndef lint |
7eb08dfe | 2 | static char sccsid[] = "@(#)tape.c 3.26 (Berkeley) 85/02/18"; |
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 | 14 | |
bdeceadb | 15 | static long fssize = MAXBSIZE; |
2cb5dabb KM |
16 | static int mt = -1; |
17 | static int pipein = 0; | |
7eb08dfe | 18 | static char magtape[BUFSIZ]; |
19230a53 KM |
19 | static int bct; |
20 | static char *tbf; | |
2cb5dabb KM |
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 |
7eb08dfe | 39 | char *host, *tape; |
e9e7ecc4 | 40 | #endif RRESTORE |
f78e116c | 41 | |
19230a53 KM |
42 | flsht(); |
43 | tbf = (char *)malloc(ntrec * TP_BSIZE); | |
44 | if (tbf == NULL) { | |
45 | fprintf(stderr, "Cannot allocate space for tape buffer\n"); | |
46 | done(1); | |
47 | } | |
9c695c61 | 48 | terminal = stdin; |
e9e7ecc4 | 49 | #ifdef RRESTORE |
f78e116c | 50 | host = source; |
7eb08dfe KM |
51 | tape = index(host, ':'); |
52 | if (tape == 0) { | |
f78e116c | 53 | nohost: |
5c5f44c7 | 54 | msg("need keyletter ``f'' and device ``host:tape''\n"); |
f78e116c KM |
55 | done(1); |
56 | } | |
7eb08dfe KM |
57 | *tape++ = '\0'; |
58 | (void) strcpy(magtape, tape); | |
f78e116c KM |
59 | if (rmthost(host) == 0) |
60 | done(1); | |
61 | setuid(getuid()); /* no longer need or want root privileges */ | |
62 | #else | |
9c695c61 | 63 | if (strcmp(source, "-") == 0) { |
b677c5d7 KM |
64 | /* |
65 | * Since input is coming from a pipe we must establish | |
66 | * our own connection to the terminal. | |
67 | */ | |
68 | terminal = fopen("/dev/tty", "r"); | |
69 | if (terminal == NULL) { | |
b8eb5f1f KM |
70 | perror("Cannot open(\"/dev/tty\")"); |
71 | terminal = fopen("/dev/null", "r"); | |
72 | if (terminal == NULL) { | |
73 | perror("Cannot open(\"/dev/null\")"); | |
74 | done(1); | |
75 | } | |
b677c5d7 | 76 | } |
2cb5dabb | 77 | pipein++; |
2cb5dabb | 78 | } |
7eb08dfe | 79 | (void) strcpy(magtape, source); |
e9e7ecc4 | 80 | #endif RRESTORE |
f78e116c KM |
81 | } |
82 | ||
83 | /* | |
84 | * Verify that the tape drive can be accessed and | |
85 | * that it actually is a dump tape. | |
86 | */ | |
87 | setup() | |
88 | { | |
2cb5dabb | 89 | int i, j, *ip; |
f78e116c KM |
90 | struct stat stbuf; |
91 | extern char *ctime(); | |
92 | extern int xtrmap(), xtrmapskip(); | |
93 | ||
94 | vprintf(stdout, "Verify tape and initialize maps\n"); | |
e9e7ecc4 | 95 | #ifdef RRESTORE |
f78e116c KM |
96 | if ((mt = rmtopen(magtape, 0)) < 0) |
97 | #else | |
2cb5dabb KM |
98 | if (pipein) |
99 | mt = 0; | |
100 | else if ((mt = open(magtape, 0)) < 0) | |
f78e116c KM |
101 | #endif |
102 | { | |
e9e7ecc4 | 103 | perror(magtape); |
f78e116c KM |
104 | done(1); |
105 | } | |
768eb687 KM |
106 | volno = 1; |
107 | setdumpnum(); | |
f78e116c | 108 | flsht(); |
5c5f44c7 | 109 | if (gethead(&spcl) == FAIL) { |
f78e116c KM |
110 | bct--; /* push back this block */ |
111 | cvtflag++; | |
5c5f44c7 | 112 | if (gethead(&spcl) == FAIL) { |
f78e116c KM |
113 | fprintf(stderr, "Tape is not a dump tape\n"); |
114 | done(1); | |
115 | } | |
116 | fprintf(stderr, "Converting to new file system format.\n"); | |
117 | } | |
2cb5dabb KM |
118 | if (pipein) { |
119 | endoftapemark.s_spcl.c_magic = cvtflag ? OFS_MAGIC : NFS_MAGIC; | |
120 | endoftapemark.s_spcl.c_type = TS_END; | |
121 | ip = (int *)&endoftapemark; | |
122 | j = sizeof(union u_spcl) / sizeof(int); | |
123 | i = 0; | |
124 | do | |
125 | i += *ip++; | |
126 | while (--j); | |
127 | endoftapemark.s_spcl.c_checksum = CHECKSUM - i; | |
128 | } | |
6a8e228c KM |
129 | if (vflag || command == 't') { |
130 | fprintf(stdout, "Dump date: %s", ctime(&spcl.c_date)); | |
131 | fprintf(stdout, "Dumped from: %s", ctime(&spcl.c_ddate)); | |
132 | } | |
f78e116c | 133 | dumptime = spcl.c_ddate; |
2cb5dabb | 134 | dumpdate = spcl.c_date; |
f78e116c | 135 | if (stat(".", &stbuf) < 0) { |
e9e7ecc4 | 136 | perror("cannot stat ."); |
f78e116c KM |
137 | done(1); |
138 | } | |
bdeceadb KM |
139 | if (stbuf.st_blksize > 0 && stbuf.st_blksize <= MAXBSIZE) |
140 | fssize = stbuf.st_blksize; | |
141 | if (((fssize - 1) & fssize) != 0) { | |
f78e116c KM |
142 | fprintf(stderr, "bad block size %d\n", fssize); |
143 | done(1); | |
144 | } | |
2cb5dabb | 145 | if (checkvol(&spcl, (long)1) == FAIL) { |
f78e116c KM |
146 | fprintf(stderr, "Tape is not volume 1 of the dump\n"); |
147 | done(1); | |
148 | } | |
2cb5dabb KM |
149 | if (readhdr(&spcl) == FAIL) |
150 | panic("no header after volume mark!\n"); | |
151 | findinode(&spcl, 1); | |
152 | if (checktype(&spcl, TS_CLRI) == FAIL) { | |
f78e116c KM |
153 | fprintf(stderr, "Cannot find file removal list\n"); |
154 | done(1); | |
155 | } | |
2cb5dabb | 156 | maxino = (spcl.c_count * TP_BSIZE * NBBY) + 1; |
768eb687 | 157 | dprintf(stdout, "maxino = %d\n", maxino); |
7851e15d | 158 | map = calloc((unsigned)1, (unsigned)howmany(maxino, NBBY)); |
f78e116c KM |
159 | if (map == (char *)NIL) |
160 | panic("no memory for file removal list\n"); | |
cf6db0ab | 161 | clrimap = map; |
f78e116c KM |
162 | curfile.action = USING; |
163 | getfile(xtrmap, xtrmapskip); | |
2cb5dabb | 164 | if (checktype(&spcl, TS_BITS) == FAIL) { |
f78e116c KM |
165 | fprintf(stderr, "Cannot find file dump list\n"); |
166 | done(1); | |
167 | } | |
7851e15d | 168 | map = calloc((unsigned)1, (unsigned)howmany(maxino, NBBY)); |
f78e116c KM |
169 | if (map == (char *)NULL) |
170 | panic("no memory for file dump list\n"); | |
cf6db0ab | 171 | dumpmap = map; |
f78e116c KM |
172 | curfile.action = USING; |
173 | getfile(xtrmap, xtrmapskip); | |
f78e116c KM |
174 | } |
175 | ||
170639fd KM |
176 | /* |
177 | * Prompt user to load a new dump volume. | |
178 | * "Nextvol" is the next suggested volume to use. | |
179 | * This suggested volume is enforced when doing full | |
180 | * or incremental restores, but can be overrridden by | |
181 | * the user when only extracting a subset of the files. | |
182 | */ | |
f78e116c KM |
183 | getvol(nextvol) |
184 | long nextvol; | |
185 | { | |
186 | long newvol; | |
170639fd | 187 | long savecnt, i; |
f78e116c KM |
188 | union u_spcl tmpspcl; |
189 | # define tmpbuf tmpspcl.s_spcl | |
190 | ||
a162cc0b | 191 | if (nextvol == 1) { |
170639fd | 192 | tapesread = 0; |
a162cc0b KM |
193 | gettingfile = 0; |
194 | } | |
2cb5dabb | 195 | if (pipein) { |
e108d3a2 | 196 | if (nextvol != 1) |
2cb5dabb | 197 | panic("Changing volumes on pipe input?\n"); |
e108d3a2 KM |
198 | if (volno == 1) |
199 | return; | |
200 | goto gethdr; | |
2cb5dabb KM |
201 | } |
202 | savecnt = blksread; | |
f78e116c | 203 | again: |
e108d3a2 KM |
204 | if (pipein) |
205 | done(1); /* pipes do not get a second chance */ | |
f78e116c KM |
206 | if (command == 'R' || command == 'r' || curfile.action != SKIP) |
207 | newvol = nextvol; | |
208 | else | |
209 | newvol = 0; | |
210 | while (newvol <= 0) { | |
170639fd KM |
211 | if (tapesread == 0) { |
212 | fprintf(stderr, "%s%s%s%s%s", | |
213 | "You have not read any tapes yet.\n", | |
214 | "Unless you know which volume your", | |
215 | " file(s) are on you should start\n", | |
216 | "with the last volume and work", | |
217 | " towards towards the first.\n"); | |
218 | } else { | |
219 | fprintf(stderr, "You have read volumes"); | |
220 | strcpy(tbf, ": "); | |
221 | for (i = 1; i < 32; i++) | |
222 | if (tapesread & (1 << i)) { | |
223 | fprintf(stderr, "%s%d", tbf, i); | |
224 | strcpy(tbf, ", "); | |
225 | } | |
226 | fprintf(stderr, "\n"); | |
227 | } | |
538cb7bb | 228 | do { |
b677c5d7 KM |
229 | fprintf(stderr, "Specify next volume #: "); |
230 | (void) fflush(stderr); | |
231 | (void) fgets(tbf, BUFSIZ, terminal); | |
232 | } while (!feof(terminal) && tbf[0] == '\n'); | |
233 | if (feof(terminal)) | |
538cb7bb | 234 | done(1); |
f78e116c KM |
235 | newvol = atoi(tbf); |
236 | if (newvol <= 0) { | |
237 | fprintf(stderr, | |
238 | "Volume numbers are positive numerics\n"); | |
239 | } | |
240 | } | |
170639fd KM |
241 | if (newvol == volno) { |
242 | tapesread |= 1 << volno; | |
f78e116c | 243 | return; |
170639fd | 244 | } |
f78e116c | 245 | closemt(); |
7eb08dfe KM |
246 | fprintf(stderr, "Mount tape volume %d\n", newvol); |
247 | fprintf(stderr, "then enter tape name (default: %s) ", magtape); | |
b677c5d7 | 248 | (void) fflush(stderr); |
7eb08dfe KM |
249 | (void) fgets(tbf, BUFSIZ, terminal); |
250 | if (feof(terminal)) | |
251 | done(1); | |
252 | if (tbf[0] != '\n') { | |
253 | (void) strcpy(magtape, tbf); | |
254 | magtape[strlen(magtape) - 1] = '\0'; | |
255 | } | |
e9e7ecc4 | 256 | #ifdef RRESTORE |
f78e116c KM |
257 | if ((mt = rmtopen(magtape, 0)) == -1) |
258 | #else | |
259 | if ((mt = open(magtape, 0)) == -1) | |
260 | #endif | |
261 | { | |
7eb08dfe KM |
262 | fprintf(stderr, "Cannot open %s\n", magtape); |
263 | volno = -1; | |
f78e116c KM |
264 | goto again; |
265 | } | |
e108d3a2 | 266 | gethdr: |
f78e116c | 267 | volno = newvol; |
768eb687 | 268 | setdumpnum(); |
f78e116c | 269 | flsht(); |
2cb5dabb | 270 | if (readhdr(&tmpbuf) == FAIL) { |
f78e116c KM |
271 | fprintf(stderr, "tape is not dump tape\n"); |
272 | volno = 0; | |
273 | goto again; | |
274 | } | |
2cb5dabb | 275 | if (checkvol(&tmpbuf, volno) == FAIL) { |
f78e116c KM |
276 | fprintf(stderr, "Wrong volume (%d)\n", tmpbuf.c_volume); |
277 | volno = 0; | |
278 | goto again; | |
279 | } | |
2cb5dabb | 280 | if (tmpbuf.c_date != dumpdate || tmpbuf.c_ddate != dumptime) { |
3dbddecd KM |
281 | fprintf(stderr, "Wrong dump date\n\tgot: %s", |
282 | ctime(&tmpbuf.c_date)); | |
283 | fprintf(stderr, "\twanted: %s", ctime(&dumpdate)); | |
2cb5dabb KM |
284 | volno = 0; |
285 | goto again; | |
286 | } | |
170639fd | 287 | tapesread |= 1 << volno; |
5c5f44c7 | 288 | blksread = savecnt; |
f78e116c KM |
289 | if (curfile.action == USING) { |
290 | if (volno == 1) | |
291 | panic("active file into volume 1\n"); | |
292 | return; | |
293 | } | |
5c5f44c7 | 294 | (void) gethead(&spcl); |
f78e116c KM |
295 | findinode(&spcl, curfile.action == UNKNOWN ? 1 : 0); |
296 | if (gettingfile) { | |
297 | gettingfile = 0; | |
298 | longjmp(restart, 1); | |
299 | } | |
300 | } | |
301 | ||
768eb687 KM |
302 | /* |
303 | * handle multiple dumps per tape by skipping forward to the | |
304 | * appropriate one. | |
305 | */ | |
306 | setdumpnum() | |
307 | { | |
308 | struct mtop tcom; | |
309 | ||
310 | if (dumpnum == 1 || volno != 1) | |
311 | return; | |
312 | if (pipein) { | |
313 | fprintf(stderr, "Cannot have multiple dumps on pipe input\n"); | |
314 | done(1); | |
315 | } | |
316 | tcom.mt_op = MTFSF; | |
317 | tcom.mt_count = dumpnum - 1; | |
e9e7ecc4 | 318 | #ifdef RRESTORE |
768eb687 KM |
319 | rmtioctl(MTFSF, dumpnum - 1); |
320 | #else | |
538cb7bb | 321 | if (ioctl(mt, (int)MTIOCTOP, (char *)&tcom) < 0) |
768eb687 KM |
322 | perror("ioctl MTFSF"); |
323 | #endif | |
324 | } | |
325 | ||
f78e116c KM |
326 | extractfile(name) |
327 | char *name; | |
328 | { | |
329 | int mode; | |
330 | time_t timep[2]; | |
331 | struct entry *ep; | |
332 | extern int xtrlnkfile(), xtrlnkskip(); | |
333 | extern int xtrfile(), xtrskip(); | |
334 | ||
335 | curfile.name = name; | |
336 | curfile.action = USING; | |
337 | timep[0] = curfile.dip->di_atime; | |
338 | timep[1] = curfile.dip->di_mtime; | |
339 | mode = curfile.dip->di_mode; | |
340 | switch (mode & IFMT) { | |
341 | ||
342 | default: | |
343 | fprintf(stderr, "%s: unknown file mode 0%o\n", name, mode); | |
344 | skipfile(); | |
345 | return (FAIL); | |
346 | ||
347 | case IFDIR: | |
348 | if (mflag) { | |
349 | ep = lookupname(name); | |
350 | if (ep == NIL || ep->e_flags & EXTRACT) | |
351 | panic("unextracted directory %s\n", name); | |
352 | skipfile(); | |
353 | return (GOOD); | |
354 | } | |
355 | vprintf(stdout, "extract file %s\n", name); | |
356 | return (genliteraldir(name, curfile.ino)); | |
357 | ||
358 | case IFLNK: | |
359 | lnkbuf[0] = '\0'; | |
360 | pathlen = 0; | |
361 | getfile(xtrlnkfile, xtrlnkskip); | |
362 | if (pathlen == 0) { | |
363 | vprintf(stdout, | |
364 | "%s: zero length symbolic link (ignored)\n", name); | |
bdeceadb KM |
365 | return (GOOD); |
366 | } | |
367 | return (linkit(lnkbuf, name, SYMLINK)); | |
f78e116c KM |
368 | |
369 | case IFCHR: | |
370 | case IFBLK: | |
371 | vprintf(stdout, "extract special file %s\n", name); | |
372 | if (mknod(name, mode, (int)curfile.dip->di_rdev) < 0) { | |
e9e7ecc4 KM |
373 | fprintf(stderr, "%s: ", name); |
374 | (void) fflush(stderr); | |
375 | perror("cannot create special file"); | |
f78e116c KM |
376 | skipfile(); |
377 | return (FAIL); | |
378 | } | |
768eb687 KM |
379 | (void) chown(name, curfile.dip->di_uid, curfile.dip->di_gid); |
380 | (void) chmod(name, mode); | |
f78e116c KM |
381 | skipfile(); |
382 | utime(name, timep); | |
383 | return (GOOD); | |
384 | ||
385 | case IFREG: | |
386 | vprintf(stdout, "extract file %s\n", name); | |
15aeb519 | 387 | if ((ofile = creat(name, 0666)) < 0) { |
e9e7ecc4 KM |
388 | fprintf(stderr, "%s: ", name); |
389 | (void) fflush(stderr); | |
390 | perror("cannot create file"); | |
f78e116c KM |
391 | skipfile(); |
392 | return (FAIL); | |
393 | } | |
768eb687 KM |
394 | (void) fchown(ofile, curfile.dip->di_uid, curfile.dip->di_gid); |
395 | (void) fchmod(ofile, mode); | |
f78e116c | 396 | getfile(xtrfile, xtrskip); |
768eb687 | 397 | (void) close(ofile); |
f78e116c KM |
398 | utime(name, timep); |
399 | return (GOOD); | |
400 | } | |
401 | /* NOTREACHED */ | |
402 | } | |
403 | ||
e108d3a2 KM |
404 | /* |
405 | * skip over bit maps on the tape | |
406 | */ | |
407 | skipmaps() | |
408 | { | |
409 | ||
410 | while (checktype(&spcl, TS_CLRI) == GOOD || | |
411 | checktype(&spcl, TS_BITS) == GOOD) | |
412 | skipfile(); | |
413 | } | |
414 | ||
415 | /* | |
416 | * skip over a file on the tape | |
417 | */ | |
f78e116c KM |
418 | skipfile() |
419 | { | |
420 | extern int null(); | |
421 | ||
422 | curfile.action = SKIP; | |
423 | getfile(null, null); | |
424 | } | |
425 | ||
426 | /* | |
427 | * Do the file extraction, calling the supplied functions | |
428 | * with the blocks | |
429 | */ | |
430 | getfile(f1, f2) | |
431 | int (*f2)(), (*f1)(); | |
432 | { | |
433 | register int i; | |
434 | int curblk = 0; | |
435 | off_t size = spcl.c_dinode.di_size; | |
436 | static char clearedbuf[MAXBSIZE]; | |
437 | char buf[MAXBSIZE / TP_BSIZE][TP_BSIZE]; | |
438 | ||
2cb5dabb | 439 | if (checktype(&spcl, TS_END) == GOOD) |
f78e116c | 440 | panic("ran off end of tape\n"); |
e108d3a2 | 441 | if (ishead(&spcl) == FAIL) |
f78e116c | 442 | panic("not at beginning of a file\n"); |
e108d3a2 | 443 | if (!gettingfile && setjmp(restart) != 0) |
f78e116c KM |
444 | return; |
445 | gettingfile++; | |
446 | loop: | |
447 | for (i = 0; i < spcl.c_count; i++) { | |
448 | if (spcl.c_addr[i]) { | |
449 | readtape(&buf[curblk++][0]); | |
450 | if (curblk == fssize / TP_BSIZE) { | |
451 | (*f1)(buf, size > TP_BSIZE ? | |
452 | (long) (fssize) : | |
453 | (curblk - 1) * TP_BSIZE + size); | |
454 | curblk = 0; | |
455 | } | |
456 | } else { | |
457 | if (curblk > 0) { | |
458 | (*f1)(buf, size > TP_BSIZE ? | |
459 | (long) (curblk * TP_BSIZE) : | |
460 | (curblk - 1) * TP_BSIZE + size); | |
461 | curblk = 0; | |
462 | } | |
463 | (*f2)(clearedbuf, size > TP_BSIZE ? | |
464 | (long) TP_BSIZE : size); | |
465 | } | |
9f13f26d KM |
466 | if ((size -= TP_BSIZE) <= 0) |
467 | break; | |
f78e116c | 468 | } |
5c5f44c7 | 469 | if (readhdr(&spcl) == GOOD && size > 0) { |
9f13f26d KM |
470 | if (checktype(&spcl, TS_ADDR) == GOOD) |
471 | goto loop; | |
768eb687 | 472 | dprintf(stdout, "Missing address (header) block for %s\n", |
f78e116c | 473 | curfile.name); |
f78e116c | 474 | } |
9f13f26d | 475 | if (curblk > 0) |
f78e116c | 476 | (*f1)(buf, (curblk * TP_BSIZE) + size); |
f78e116c KM |
477 | findinode(&spcl, 1); |
478 | gettingfile = 0; | |
479 | } | |
480 | ||
481 | /* | |
482 | * The next routines are called during file extraction to | |
483 | * put the data into the right form and place. | |
484 | */ | |
485 | xtrfile(buf, size) | |
486 | char *buf; | |
487 | long size; | |
488 | { | |
489 | ||
490 | if (write(ofile, buf, (int) size) == -1) { | |
491 | fprintf(stderr, "write error extracting inode %d, name %s\n", | |
492 | curfile.ino, curfile.name); | |
493 | perror("write"); | |
494 | done(1); | |
495 | } | |
496 | } | |
497 | ||
498 | xtrskip(buf, size) | |
499 | char *buf; | |
500 | long size; | |
501 | { | |
502 | ||
503 | #ifdef lint | |
504 | buf = buf; | |
505 | #endif | |
506 | if (lseek(ofile, size, 1) == (long)-1) { | |
507 | fprintf(stderr, "seek error extracting inode %d, name %s\n", | |
508 | curfile.ino, curfile.name); | |
509 | perror("lseek"); | |
510 | done(1); | |
511 | } | |
512 | } | |
513 | ||
514 | xtrlnkfile(buf, size) | |
515 | char *buf; | |
516 | long size; | |
517 | { | |
518 | ||
519 | pathlen += size; | |
520 | if (pathlen > MAXPATHLEN) { | |
521 | fprintf(stderr, "symbolic link name: %s->%s%s; too long %d\n", | |
522 | curfile.name, lnkbuf, buf, pathlen); | |
523 | done(1); | |
524 | } | |
538cb7bb | 525 | (void) strcat(lnkbuf, buf); |
f78e116c KM |
526 | } |
527 | ||
528 | xtrlnkskip(buf, size) | |
529 | char *buf; | |
530 | long size; | |
531 | { | |
532 | ||
533 | #ifdef lint | |
534 | buf = buf, size = size; | |
535 | #endif | |
536 | fprintf(stderr, "unallocated block in symbolic link %s\n", | |
537 | curfile.name); | |
538 | done(1); | |
539 | } | |
540 | ||
541 | xtrmap(buf, size) | |
542 | char *buf; | |
543 | long size; | |
544 | { | |
545 | ||
546 | bcopy(buf, map, size); | |
cf6db0ab | 547 | map += size; |
f78e116c KM |
548 | } |
549 | ||
550 | xtrmapskip(buf, size) | |
551 | char *buf; | |
552 | long size; | |
553 | { | |
554 | ||
555 | #ifdef lint | |
556 | buf = buf; | |
f78e116c KM |
557 | #endif |
558 | panic("hole in map\n"); | |
cf6db0ab | 559 | map += size; |
f78e116c KM |
560 | } |
561 | ||
562 | null() {;} | |
563 | ||
564 | /* | |
565 | * Do the tape i/o, dealing with volume changes | |
566 | * etc.. | |
567 | */ | |
568 | readtape(b) | |
569 | char *b; | |
570 | { | |
571 | register long i; | |
7851e15d KM |
572 | long rd, newvol; |
573 | int cnt; | |
f78e116c | 574 | |
19230a53 KM |
575 | if (bct >= ntrec) { |
576 | for (i = 0; i < ntrec; i++) | |
f78e116c KM |
577 | ((struct s_spcl *)&tbf[i*TP_BSIZE])->c_magic = 0; |
578 | bct = 0; | |
19230a53 | 579 | cnt = ntrec*TP_BSIZE; |
74025ab9 KM |
580 | rd = 0; |
581 | getmore: | |
e9e7ecc4 | 582 | #ifdef RRESTORE |
74025ab9 | 583 | i = rmtread(&tbf[rd], cnt); |
f78e116c | 584 | #else |
74025ab9 | 585 | i = read(mt, &tbf[rd], cnt); |
f78e116c | 586 | #endif |
19230a53 | 587 | if (i > 0 && i != ntrec*TP_BSIZE) { |
74025ab9 KM |
588 | if (!pipein) |
589 | panic("partial block read: %d should be %d\n", | |
19230a53 | 590 | i, ntrec*TP_BSIZE); |
74025ab9 KM |
591 | rd += i; |
592 | cnt -= i; | |
593 | if (cnt > 0) | |
594 | goto getmore; | |
595 | i = rd; | |
596 | } | |
597 | if (i < 0) { | |
f78e116c KM |
598 | fprintf(stderr, "Tape read error while "); |
599 | switch (curfile.action) { | |
74025ab9 KM |
600 | default: |
601 | fprintf(stderr, "trying to set up tape\n"); | |
602 | break; | |
f78e116c KM |
603 | case UNKNOWN: |
604 | fprintf(stderr, "trying to resyncronize\n"); | |
605 | break; | |
606 | case USING: | |
607 | fprintf(stderr, "restoring %s\n", curfile.name); | |
608 | break; | |
609 | case SKIP: | |
610 | fprintf(stderr, "skipping over inode %d\n", | |
611 | curfile.ino); | |
612 | break; | |
613 | } | |
614 | if (!yflag && !reply("continue")) | |
615 | done(1); | |
19230a53 | 616 | i = ntrec*TP_BSIZE; |
f78e116c | 617 | bzero(tbf, i); |
e9e7ecc4 | 618 | #ifdef RRESTORE |
f78e116c KM |
619 | if (rmtseek(i, 1) < 0) |
620 | #else | |
621 | if (lseek(mt, i, 1) == (long)-1) | |
622 | #endif | |
623 | { | |
e9e7ecc4 | 624 | perror("continuation failed"); |
f78e116c KM |
625 | done(1); |
626 | } | |
627 | } | |
628 | if (i == 0) { | |
2cb5dabb KM |
629 | if (pipein) { |
630 | bcopy((char *)&endoftapemark, b, | |
631 | (long)TP_BSIZE); | |
632 | flsht(); | |
633 | return; | |
634 | } | |
f78e116c KM |
635 | newvol = volno + 1; |
636 | volno = 0; | |
637 | getvol(newvol); | |
638 | readtape(b); | |
639 | return; | |
640 | } | |
641 | } | |
642 | bcopy(&tbf[(bct++*TP_BSIZE)], b, (long)TP_BSIZE); | |
2cb5dabb | 643 | blksread++; |
f78e116c KM |
644 | } |
645 | ||
646 | flsht() | |
647 | { | |
648 | ||
19230a53 | 649 | bct = ntrec+1; |
f78e116c KM |
650 | } |
651 | ||
f78e116c KM |
652 | closemt() |
653 | { | |
654 | if (mt < 0) | |
655 | return; | |
e9e7ecc4 | 656 | #ifdef RRESTORE |
f78e116c KM |
657 | rmtclose(); |
658 | #else | |
768eb687 | 659 | (void) close(mt); |
f78e116c KM |
660 | #endif |
661 | } | |
662 | ||
663 | checkvol(b, t) | |
664 | struct s_spcl *b; | |
665 | long t; | |
666 | { | |
667 | ||
2cb5dabb KM |
668 | if (b->c_volume != t) |
669 | return(FAIL); | |
670 | return(GOOD); | |
f78e116c KM |
671 | } |
672 | ||
673 | readhdr(b) | |
674 | struct s_spcl *b; | |
675 | { | |
676 | ||
5c5f44c7 | 677 | if (gethead(b) == FAIL) { |
768eb687 | 678 | dprintf(stdout, "readhdr fails at %d blocks\n", blksread); |
2cb5dabb | 679 | return(FAIL); |
5c5f44c7 | 680 | } |
2cb5dabb | 681 | return(GOOD); |
f78e116c KM |
682 | } |
683 | ||
684 | /* | |
685 | * read the tape into buf, then return whether or | |
686 | * or not it is a header block. | |
687 | */ | |
688 | gethead(buf) | |
689 | struct s_spcl *buf; | |
690 | { | |
5c5f44c7 | 691 | long i; |
f78e116c KM |
692 | union u_ospcl { |
693 | char dummy[TP_BSIZE]; | |
694 | struct s_ospcl { | |
2cb5dabb KM |
695 | long c_type; |
696 | long c_date; | |
697 | long c_ddate; | |
698 | long c_volume; | |
699 | long c_tapea; | |
cf6db0ab | 700 | u_short c_inumber; |
2cb5dabb KM |
701 | long c_magic; |
702 | long c_checksum; | |
f78e116c KM |
703 | struct odinode { |
704 | unsigned short odi_mode; | |
cf6db0ab KM |
705 | u_short odi_nlink; |
706 | u_short odi_uid; | |
707 | u_short odi_gid; | |
2cb5dabb KM |
708 | long odi_size; |
709 | long odi_rdev; | |
f78e116c | 710 | char odi_addr[36]; |
2cb5dabb KM |
711 | long odi_atime; |
712 | long odi_mtime; | |
713 | long odi_ctime; | |
f78e116c | 714 | } c_dinode; |
2cb5dabb KM |
715 | long c_count; |
716 | char c_addr[256]; | |
f78e116c KM |
717 | } s_ospcl; |
718 | } u_ospcl; | |
719 | ||
720 | if (!cvtflag) { | |
721 | readtape((char *)buf); | |
5c5f44c7 | 722 | if (buf->c_magic != NFS_MAGIC || checksum((int *)buf) == FAIL) |
2cb5dabb | 723 | return(FAIL); |
5c5f44c7 | 724 | goto good; |
f78e116c KM |
725 | } |
726 | readtape((char *)(&u_ospcl.s_ospcl)); | |
727 | bzero((char *)buf, (long)TP_BSIZE); | |
728 | buf->c_type = u_ospcl.s_ospcl.c_type; | |
729 | buf->c_date = u_ospcl.s_ospcl.c_date; | |
730 | buf->c_ddate = u_ospcl.s_ospcl.c_ddate; | |
731 | buf->c_volume = u_ospcl.s_ospcl.c_volume; | |
732 | buf->c_tapea = u_ospcl.s_ospcl.c_tapea; | |
733 | buf->c_inumber = u_ospcl.s_ospcl.c_inumber; | |
734 | buf->c_checksum = u_ospcl.s_ospcl.c_checksum; | |
735 | buf->c_magic = u_ospcl.s_ospcl.c_magic; | |
736 | buf->c_dinode.di_mode = u_ospcl.s_ospcl.c_dinode.odi_mode; | |
737 | buf->c_dinode.di_nlink = u_ospcl.s_ospcl.c_dinode.odi_nlink; | |
738 | buf->c_dinode.di_uid = u_ospcl.s_ospcl.c_dinode.odi_uid; | |
739 | buf->c_dinode.di_gid = u_ospcl.s_ospcl.c_dinode.odi_gid; | |
740 | buf->c_dinode.di_size = u_ospcl.s_ospcl.c_dinode.odi_size; | |
741 | buf->c_dinode.di_rdev = u_ospcl.s_ospcl.c_dinode.odi_rdev; | |
742 | buf->c_dinode.di_atime = u_ospcl.s_ospcl.c_dinode.odi_atime; | |
743 | buf->c_dinode.di_mtime = u_ospcl.s_ospcl.c_dinode.odi_mtime; | |
744 | buf->c_dinode.di_ctime = u_ospcl.s_ospcl.c_dinode.odi_ctime; | |
745 | buf->c_count = u_ospcl.s_ospcl.c_count; | |
2cb5dabb | 746 | bcopy(u_ospcl.s_ospcl.c_addr, buf->c_addr, (long)256); |
f78e116c | 747 | if (u_ospcl.s_ospcl.c_magic != OFS_MAGIC || |
5c5f44c7 | 748 | checksum((int *)(&u_ospcl.s_ospcl)) == FAIL) |
2cb5dabb | 749 | return(FAIL); |
f78e116c | 750 | buf->c_magic = NFS_MAGIC; |
5c5f44c7 KM |
751 | |
752 | good: | |
753 | switch (buf->c_type) { | |
754 | ||
755 | case TS_CLRI: | |
756 | case TS_BITS: | |
757 | /* | |
758 | * Have to patch up missing information in bit map headers | |
759 | */ | |
760 | buf->c_inumber = 0; | |
761 | buf->c_dinode.di_size = buf->c_count * TP_BSIZE; | |
762 | for (i = 0; i < buf->c_count; i++) | |
763 | buf->c_addr[i]++; | |
764 | break; | |
765 | ||
766 | case TS_TAPE: | |
767 | case TS_END: | |
768 | buf->c_inumber = 0; | |
769 | break; | |
770 | ||
771 | case TS_INODE: | |
772 | case TS_ADDR: | |
773 | break; | |
774 | ||
775 | default: | |
776 | panic("gethead: unknown inode type %d\n", buf->c_type); | |
777 | break; | |
778 | } | |
2cb5dabb KM |
779 | if (dflag) |
780 | accthdr(buf); | |
781 | return(GOOD); | |
782 | } | |
783 | ||
784 | /* | |
785 | * Check that a header is where it belongs and predict the next header | |
786 | */ | |
787 | accthdr(header) | |
788 | struct s_spcl *header; | |
789 | { | |
7851e15d | 790 | static ino_t previno = 0x7fffffff; |
2cb5dabb KM |
791 | static int prevtype; |
792 | static long predict; | |
793 | long blks, i; | |
794 | ||
5c5f44c7 KM |
795 | if (header->c_type == TS_TAPE) { |
796 | fprintf(stderr, "Volume header\n"); | |
797 | return; | |
798 | } | |
7851e15d | 799 | if (previno == 0x7fffffff) |
2cb5dabb KM |
800 | goto newcalc; |
801 | switch (prevtype) { | |
2cb5dabb | 802 | case TS_BITS: |
5c5f44c7 | 803 | fprintf(stderr, "Dump mask header"); |
2cb5dabb KM |
804 | break; |
805 | case TS_CLRI: | |
5c5f44c7 | 806 | fprintf(stderr, "Remove mask header"); |
2cb5dabb KM |
807 | break; |
808 | case TS_INODE: | |
5c5f44c7 | 809 | fprintf(stderr, "File header, ino %d", previno); |
2cb5dabb KM |
810 | break; |
811 | case TS_ADDR: | |
5c5f44c7 | 812 | fprintf(stderr, "File continuation header, ino %d", previno); |
2cb5dabb KM |
813 | break; |
814 | case TS_END: | |
5c5f44c7 | 815 | fprintf(stderr, "End of tape header"); |
2cb5dabb KM |
816 | break; |
817 | } | |
2cb5dabb KM |
818 | if (predict != blksread - 1) |
819 | fprintf(stderr, "; predicted %d blocks, got %d blocks", | |
820 | predict, blksread - 1); | |
821 | fprintf(stderr, "\n"); | |
822 | newcalc: | |
823 | blks = 0; | |
5c5f44c7 | 824 | if (header->c_type != TS_END) |
2cb5dabb KM |
825 | for (i = 0; i < header->c_count; i++) |
826 | if (header->c_addr[i] != 0) | |
827 | blks++; | |
828 | predict = blks; | |
829 | blksread = 0; | |
830 | prevtype = header->c_type; | |
831 | previno = header->c_inumber; | |
f78e116c KM |
832 | } |
833 | ||
834 | /* | |
835 | * Find an inode header. | |
836 | * Complain if had to skip, and complain is set. | |
837 | */ | |
838 | findinode(header, complain) | |
839 | struct s_spcl *header; | |
840 | int complain; | |
841 | { | |
2cb5dabb | 842 | static long skipcnt = 0; |
f78e116c KM |
843 | |
844 | curfile.name = "<name unknown>"; | |
845 | curfile.action = UNKNOWN; | |
846 | curfile.dip = (struct dinode *)NIL; | |
847 | curfile.ino = 0; | |
2cb5dabb KM |
848 | if (ishead(header) == FAIL) { |
849 | skipcnt++; | |
850 | while (gethead(header) == FAIL) | |
f78e116c | 851 | skipcnt++; |
2cb5dabb | 852 | } |
f78e116c | 853 | for (;;) { |
2cb5dabb | 854 | if (checktype(header, TS_INODE) == GOOD) { |
f78e116c KM |
855 | curfile.dip = &header->c_dinode; |
856 | curfile.ino = header->c_inumber; | |
857 | break; | |
858 | } | |
2cb5dabb | 859 | if (checktype(header, TS_END) == GOOD) { |
f78e116c KM |
860 | curfile.ino = maxino; |
861 | break; | |
862 | } | |
2cb5dabb | 863 | if (checktype(header, TS_CLRI) == GOOD) { |
f78e116c | 864 | curfile.name = "<file removal list>"; |
e108d3a2 | 865 | break; |
f78e116c | 866 | } |
2cb5dabb | 867 | if (checktype(header, TS_BITS) == GOOD) { |
f78e116c | 868 | curfile.name = "<file dump list>"; |
e108d3a2 | 869 | break; |
f78e116c | 870 | } |
2cb5dabb | 871 | while (gethead(header) == FAIL) |
f78e116c KM |
872 | skipcnt++; |
873 | } | |
874 | if (skipcnt > 0 && complain) | |
dd1900f1 | 875 | fprintf(stderr, "resync restore, skipped %d blocks\n", skipcnt); |
f78e116c KM |
876 | skipcnt = 0; |
877 | } | |
878 | ||
879 | /* | |
880 | * return whether or not the buffer contains a header block | |
881 | */ | |
882 | ishead(buf) | |
883 | struct s_spcl *buf; | |
884 | { | |
885 | ||
886 | if (buf->c_magic != NFS_MAGIC) | |
2cb5dabb KM |
887 | return(FAIL); |
888 | return(GOOD); | |
f78e116c KM |
889 | } |
890 | ||
891 | checktype(b, t) | |
892 | struct s_spcl *b; | |
893 | int t; | |
894 | { | |
895 | ||
2cb5dabb KM |
896 | if (b->c_type != t) |
897 | return(FAIL); | |
898 | return(GOOD); | |
f78e116c KM |
899 | } |
900 | ||
901 | checksum(b) | |
902 | register int *b; | |
903 | { | |
904 | register int i, j; | |
905 | ||
906 | j = sizeof(union u_spcl) / sizeof(int); | |
907 | i = 0; | |
908 | do | |
909 | i += *b++; | |
910 | while (--j); | |
911 | if (i != CHECKSUM) { | |
912 | fprintf(stderr, "Checksum error %o, inode %d file %s\n", i, | |
913 | curfile.ino, curfile.name); | |
2cb5dabb | 914 | return(FAIL); |
f78e116c | 915 | } |
2cb5dabb | 916 | return(GOOD); |
f78e116c KM |
917 | } |
918 | ||
e9e7ecc4 | 919 | #ifdef RRESTORE |
74025ab9 | 920 | /* VARARGS1 */ |
f78e116c KM |
921 | msg(cp, a1, a2, a3) |
922 | char *cp; | |
923 | { | |
924 | ||
925 | fprintf(stderr, cp, a1, a2, a3); | |
926 | } | |
e9e7ecc4 | 927 | #endif RRESTORE |