Commit | Line | Data |
---|---|---|
8c5eec2f DF |
1 | /* |
2 | * Copyright (c) 1983 Regents of the University of California. | |
3 | * All rights reserved. The Berkeley software License Agreement | |
4 | * specifies the terms and conditions for redistribution. | |
5 | */ | |
f78e116c | 6 | |
8c5eec2f | 7 | #ifndef lint |
74e940f5 | 8 | static char sccsid[] = "@(#)tape.c 5.6 (Berkeley) %G%"; |
8c5eec2f | 9 | #endif not lint |
ebd1f727 | 10 | |
f78e116c | 11 | #include "restore.h" |
d9127117 | 12 | #include <protocols/dumprestore.h> |
f78e116c KM |
13 | #include <sys/ioctl.h> |
14 | #include <sys/mtio.h> | |
2cb5dabb | 15 | #include <sys/file.h> |
f78e116c | 16 | #include <setjmp.h> |
a7b24fe9 | 17 | #include <sys/stat.h> |
2cb5dabb | 18 | |
bdeceadb | 19 | static long fssize = MAXBSIZE; |
2cb5dabb KM |
20 | static int mt = -1; |
21 | static int pipein = 0; | |
7eb08dfe | 22 | static char magtape[BUFSIZ]; |
19230a53 KM |
23 | static int bct; |
24 | static char *tbf; | |
2cb5dabb KM |
25 | static union u_spcl endoftapemark; |
26 | static long blksread; | |
170639fd | 27 | static long tapesread; |
2cb5dabb KM |
28 | static jmp_buf restart; |
29 | static int gettingfile = 0; /* restart has a valid frame */ | |
30 | ||
31 | static int ofile; | |
32 | static char *map; | |
33 | static char lnkbuf[MAXPATHLEN + 1]; | |
34 | static int pathlen; | |
f78e116c | 35 | |
b4c41341 KS |
36 | int Bcvt; /* Swap Bytes (for CCI or sun) */ |
37 | static int Qcvt; /* Swap quads (for sun) */ | |
f78e116c KM |
38 | /* |
39 | * Set up an input source | |
40 | */ | |
41 | setinput(source) | |
42 | char *source; | |
43 | { | |
e9e7ecc4 | 44 | #ifdef RRESTORE |
7eb08dfe | 45 | char *host, *tape; |
e9e7ecc4 | 46 | #endif RRESTORE |
f78e116c | 47 | |
19230a53 | 48 | flsht(); |
b97e998a KM |
49 | if (bflag) |
50 | newtapebuf(ntrec); | |
51 | else | |
52 | newtapebuf(NTREC > HIGHDENSITYTREC ? NTREC : HIGHDENSITYTREC); | |
9c695c61 | 53 | terminal = stdin; |
e9e7ecc4 | 54 | #ifdef RRESTORE |
f78e116c | 55 | host = source; |
7eb08dfe KM |
56 | tape = index(host, ':'); |
57 | if (tape == 0) { | |
f78e116c | 58 | nohost: |
5c5f44c7 | 59 | msg("need keyletter ``f'' and device ``host:tape''\n"); |
f78e116c KM |
60 | done(1); |
61 | } | |
7eb08dfe KM |
62 | *tape++ = '\0'; |
63 | (void) strcpy(magtape, tape); | |
f78e116c KM |
64 | if (rmthost(host) == 0) |
65 | done(1); | |
66 | setuid(getuid()); /* no longer need or want root privileges */ | |
67 | #else | |
9c695c61 | 68 | if (strcmp(source, "-") == 0) { |
b677c5d7 KM |
69 | /* |
70 | * Since input is coming from a pipe we must establish | |
71 | * our own connection to the terminal. | |
72 | */ | |
73 | terminal = fopen("/dev/tty", "r"); | |
74 | if (terminal == NULL) { | |
b8eb5f1f KM |
75 | perror("Cannot open(\"/dev/tty\")"); |
76 | terminal = fopen("/dev/null", "r"); | |
77 | if (terminal == NULL) { | |
78 | perror("Cannot open(\"/dev/null\")"); | |
79 | done(1); | |
80 | } | |
b677c5d7 | 81 | } |
2cb5dabb | 82 | pipein++; |
2cb5dabb | 83 | } |
7eb08dfe | 84 | (void) strcpy(magtape, source); |
e9e7ecc4 | 85 | #endif RRESTORE |
f78e116c KM |
86 | } |
87 | ||
b97e998a KM |
88 | newtapebuf(size) |
89 | long size; | |
90 | { | |
91 | static tbfsize = -1; | |
92 | ||
93 | ntrec = size; | |
94 | if (size <= tbfsize) | |
95 | return; | |
96 | if (tbf != NULL) | |
97 | free(tbf); | |
98 | tbf = (char *)malloc(size * TP_BSIZE); | |
99 | if (tbf == NULL) { | |
100 | fprintf(stderr, "Cannot allocate space for tape buffer\n"); | |
101 | done(1); | |
102 | } | |
103 | tbfsize = size; | |
104 | } | |
105 | ||
f78e116c KM |
106 | /* |
107 | * Verify that the tape drive can be accessed and | |
108 | * that it actually is a dump tape. | |
109 | */ | |
110 | setup() | |
111 | { | |
2cb5dabb | 112 | int i, j, *ip; |
f78e116c KM |
113 | struct stat stbuf; |
114 | extern char *ctime(); | |
115 | extern int xtrmap(), xtrmapskip(); | |
116 | ||
117 | vprintf(stdout, "Verify tape and initialize maps\n"); | |
e9e7ecc4 | 118 | #ifdef RRESTORE |
f78e116c KM |
119 | if ((mt = rmtopen(magtape, 0)) < 0) |
120 | #else | |
2cb5dabb KM |
121 | if (pipein) |
122 | mt = 0; | |
123 | else if ((mt = open(magtape, 0)) < 0) | |
f78e116c KM |
124 | #endif |
125 | { | |
e9e7ecc4 | 126 | perror(magtape); |
f78e116c KM |
127 | done(1); |
128 | } | |
768eb687 KM |
129 | volno = 1; |
130 | setdumpnum(); | |
f78e116c | 131 | flsht(); |
b97e998a KM |
132 | if (!pipein && !bflag) |
133 | findtapeblksize(); | |
5c5f44c7 | 134 | if (gethead(&spcl) == FAIL) { |
f78e116c KM |
135 | bct--; /* push back this block */ |
136 | cvtflag++; | |
5c5f44c7 | 137 | if (gethead(&spcl) == FAIL) { |
f78e116c KM |
138 | fprintf(stderr, "Tape is not a dump tape\n"); |
139 | done(1); | |
140 | } | |
141 | fprintf(stderr, "Converting to new file system format.\n"); | |
142 | } | |
2cb5dabb KM |
143 | if (pipein) { |
144 | endoftapemark.s_spcl.c_magic = cvtflag ? OFS_MAGIC : NFS_MAGIC; | |
145 | endoftapemark.s_spcl.c_type = TS_END; | |
146 | ip = (int *)&endoftapemark; | |
147 | j = sizeof(union u_spcl) / sizeof(int); | |
148 | i = 0; | |
149 | do | |
150 | i += *ip++; | |
151 | while (--j); | |
152 | endoftapemark.s_spcl.c_checksum = CHECKSUM - i; | |
153 | } | |
6a8e228c KM |
154 | if (vflag || command == 't') { |
155 | fprintf(stdout, "Dump date: %s", ctime(&spcl.c_date)); | |
156 | fprintf(stdout, "Dumped from: %s", ctime(&spcl.c_ddate)); | |
157 | } | |
f78e116c | 158 | dumptime = spcl.c_ddate; |
2cb5dabb | 159 | dumpdate = spcl.c_date; |
f78e116c | 160 | if (stat(".", &stbuf) < 0) { |
e9e7ecc4 | 161 | perror("cannot stat ."); |
f78e116c KM |
162 | done(1); |
163 | } | |
bdeceadb KM |
164 | if (stbuf.st_blksize > 0 && stbuf.st_blksize <= MAXBSIZE) |
165 | fssize = stbuf.st_blksize; | |
166 | if (((fssize - 1) & fssize) != 0) { | |
f78e116c KM |
167 | fprintf(stderr, "bad block size %d\n", fssize); |
168 | done(1); | |
169 | } | |
2cb5dabb | 170 | if (checkvol(&spcl, (long)1) == FAIL) { |
f78e116c KM |
171 | fprintf(stderr, "Tape is not volume 1 of the dump\n"); |
172 | done(1); | |
173 | } | |
2cb5dabb KM |
174 | if (readhdr(&spcl) == FAIL) |
175 | panic("no header after volume mark!\n"); | |
176 | findinode(&spcl, 1); | |
177 | if (checktype(&spcl, TS_CLRI) == FAIL) { | |
f78e116c KM |
178 | fprintf(stderr, "Cannot find file removal list\n"); |
179 | done(1); | |
180 | } | |
2cb5dabb | 181 | maxino = (spcl.c_count * TP_BSIZE * NBBY) + 1; |
768eb687 | 182 | dprintf(stdout, "maxino = %d\n", maxino); |
7851e15d | 183 | map = calloc((unsigned)1, (unsigned)howmany(maxino, NBBY)); |
f78e116c KM |
184 | if (map == (char *)NIL) |
185 | panic("no memory for file removal list\n"); | |
cf6db0ab | 186 | clrimap = map; |
f78e116c KM |
187 | curfile.action = USING; |
188 | getfile(xtrmap, xtrmapskip); | |
2cb5dabb | 189 | if (checktype(&spcl, TS_BITS) == FAIL) { |
f78e116c KM |
190 | fprintf(stderr, "Cannot find file dump list\n"); |
191 | done(1); | |
192 | } | |
7851e15d | 193 | map = calloc((unsigned)1, (unsigned)howmany(maxino, NBBY)); |
f78e116c KM |
194 | if (map == (char *)NULL) |
195 | panic("no memory for file dump list\n"); | |
cf6db0ab | 196 | dumpmap = map; |
f78e116c KM |
197 | curfile.action = USING; |
198 | getfile(xtrmap, xtrmapskip); | |
f78e116c KM |
199 | } |
200 | ||
170639fd KM |
201 | /* |
202 | * Prompt user to load a new dump volume. | |
203 | * "Nextvol" is the next suggested volume to use. | |
204 | * This suggested volume is enforced when doing full | |
205 | * or incremental restores, but can be overrridden by | |
206 | * the user when only extracting a subset of the files. | |
207 | */ | |
f78e116c KM |
208 | getvol(nextvol) |
209 | long nextvol; | |
210 | { | |
211 | long newvol; | |
170639fd | 212 | long savecnt, i; |
f78e116c KM |
213 | union u_spcl tmpspcl; |
214 | # define tmpbuf tmpspcl.s_spcl | |
215 | ||
a162cc0b | 216 | if (nextvol == 1) { |
170639fd | 217 | tapesread = 0; |
a162cc0b KM |
218 | gettingfile = 0; |
219 | } | |
2cb5dabb | 220 | if (pipein) { |
e108d3a2 | 221 | if (nextvol != 1) |
2cb5dabb | 222 | panic("Changing volumes on pipe input?\n"); |
e108d3a2 KM |
223 | if (volno == 1) |
224 | return; | |
225 | goto gethdr; | |
2cb5dabb KM |
226 | } |
227 | savecnt = blksread; | |
f78e116c | 228 | again: |
e108d3a2 KM |
229 | if (pipein) |
230 | done(1); /* pipes do not get a second chance */ | |
f78e116c KM |
231 | if (command == 'R' || command == 'r' || curfile.action != SKIP) |
232 | newvol = nextvol; | |
233 | else | |
234 | newvol = 0; | |
235 | while (newvol <= 0) { | |
170639fd KM |
236 | if (tapesread == 0) { |
237 | fprintf(stderr, "%s%s%s%s%s", | |
238 | "You have not read any tapes yet.\n", | |
239 | "Unless you know which volume your", | |
240 | " file(s) are on you should start\n", | |
241 | "with the last volume and work", | |
b4c41341 | 242 | " towards towards the first.\n"); |
170639fd KM |
243 | } else { |
244 | fprintf(stderr, "You have read volumes"); | |
245 | strcpy(tbf, ": "); | |
246 | for (i = 1; i < 32; i++) | |
247 | if (tapesread & (1 << i)) { | |
248 | fprintf(stderr, "%s%d", tbf, i); | |
249 | strcpy(tbf, ", "); | |
250 | } | |
251 | fprintf(stderr, "\n"); | |
252 | } | |
538cb7bb | 253 | do { |
b677c5d7 KM |
254 | fprintf(stderr, "Specify next volume #: "); |
255 | (void) fflush(stderr); | |
256 | (void) fgets(tbf, BUFSIZ, terminal); | |
257 | } while (!feof(terminal) && tbf[0] == '\n'); | |
258 | if (feof(terminal)) | |
538cb7bb | 259 | done(1); |
f78e116c KM |
260 | newvol = atoi(tbf); |
261 | if (newvol <= 0) { | |
262 | fprintf(stderr, | |
263 | "Volume numbers are positive numerics\n"); | |
264 | } | |
265 | } | |
170639fd KM |
266 | if (newvol == volno) { |
267 | tapesread |= 1 << volno; | |
f78e116c | 268 | return; |
170639fd | 269 | } |
f78e116c | 270 | closemt(); |
7eb08dfe KM |
271 | fprintf(stderr, "Mount tape volume %d\n", newvol); |
272 | fprintf(stderr, "then enter tape name (default: %s) ", magtape); | |
b677c5d7 | 273 | (void) fflush(stderr); |
7eb08dfe KM |
274 | (void) fgets(tbf, BUFSIZ, terminal); |
275 | if (feof(terminal)) | |
276 | done(1); | |
277 | if (tbf[0] != '\n') { | |
278 | (void) strcpy(magtape, tbf); | |
279 | magtape[strlen(magtape) - 1] = '\0'; | |
280 | } | |
e9e7ecc4 | 281 | #ifdef RRESTORE |
f78e116c KM |
282 | if ((mt = rmtopen(magtape, 0)) == -1) |
283 | #else | |
284 | if ((mt = open(magtape, 0)) == -1) | |
285 | #endif | |
286 | { | |
7eb08dfe KM |
287 | fprintf(stderr, "Cannot open %s\n", magtape); |
288 | volno = -1; | |
f78e116c KM |
289 | goto again; |
290 | } | |
e108d3a2 | 291 | gethdr: |
f78e116c | 292 | volno = newvol; |
768eb687 | 293 | setdumpnum(); |
f78e116c | 294 | flsht(); |
2cb5dabb | 295 | if (readhdr(&tmpbuf) == FAIL) { |
f78e116c KM |
296 | fprintf(stderr, "tape is not dump tape\n"); |
297 | volno = 0; | |
298 | goto again; | |
299 | } | |
2cb5dabb | 300 | if (checkvol(&tmpbuf, volno) == FAIL) { |
f78e116c KM |
301 | fprintf(stderr, "Wrong volume (%d)\n", tmpbuf.c_volume); |
302 | volno = 0; | |
303 | goto again; | |
304 | } | |
2cb5dabb | 305 | if (tmpbuf.c_date != dumpdate || tmpbuf.c_ddate != dumptime) { |
3dbddecd KM |
306 | fprintf(stderr, "Wrong dump date\n\tgot: %s", |
307 | ctime(&tmpbuf.c_date)); | |
308 | fprintf(stderr, "\twanted: %s", ctime(&dumpdate)); | |
2cb5dabb KM |
309 | volno = 0; |
310 | goto again; | |
311 | } | |
170639fd | 312 | tapesread |= 1 << volno; |
5c5f44c7 | 313 | blksread = savecnt; |
f78e116c KM |
314 | if (curfile.action == USING) { |
315 | if (volno == 1) | |
316 | panic("active file into volume 1\n"); | |
317 | return; | |
318 | } | |
5c5f44c7 | 319 | (void) gethead(&spcl); |
f78e116c KM |
320 | findinode(&spcl, curfile.action == UNKNOWN ? 1 : 0); |
321 | if (gettingfile) { | |
322 | gettingfile = 0; | |
323 | longjmp(restart, 1); | |
324 | } | |
325 | } | |
326 | ||
768eb687 KM |
327 | /* |
328 | * handle multiple dumps per tape by skipping forward to the | |
329 | * appropriate one. | |
330 | */ | |
331 | setdumpnum() | |
332 | { | |
333 | struct mtop tcom; | |
334 | ||
335 | if (dumpnum == 1 || volno != 1) | |
336 | return; | |
337 | if (pipein) { | |
338 | fprintf(stderr, "Cannot have multiple dumps on pipe input\n"); | |
339 | done(1); | |
340 | } | |
341 | tcom.mt_op = MTFSF; | |
342 | tcom.mt_count = dumpnum - 1; | |
e9e7ecc4 | 343 | #ifdef RRESTORE |
768eb687 KM |
344 | rmtioctl(MTFSF, dumpnum - 1); |
345 | #else | |
538cb7bb | 346 | if (ioctl(mt, (int)MTIOCTOP, (char *)&tcom) < 0) |
768eb687 KM |
347 | perror("ioctl MTFSF"); |
348 | #endif | |
349 | } | |
350 | ||
f78e116c KM |
351 | extractfile(name) |
352 | char *name; | |
353 | { | |
354 | int mode; | |
355 | time_t timep[2]; | |
356 | struct entry *ep; | |
357 | extern int xtrlnkfile(), xtrlnkskip(); | |
358 | extern int xtrfile(), xtrskip(); | |
359 | ||
360 | curfile.name = name; | |
361 | curfile.action = USING; | |
362 | timep[0] = curfile.dip->di_atime; | |
363 | timep[1] = curfile.dip->di_mtime; | |
364 | mode = curfile.dip->di_mode; | |
365 | switch (mode & IFMT) { | |
366 | ||
367 | default: | |
368 | fprintf(stderr, "%s: unknown file mode 0%o\n", name, mode); | |
369 | skipfile(); | |
370 | return (FAIL); | |
371 | ||
74e940f5 KM |
372 | case IFSOCK: |
373 | vprintf(stdout, "skipped socket %s\n", name); | |
374 | skipfile(); | |
375 | return (GOOD); | |
376 | ||
f78e116c KM |
377 | case IFDIR: |
378 | if (mflag) { | |
379 | ep = lookupname(name); | |
380 | if (ep == NIL || ep->e_flags & EXTRACT) | |
381 | panic("unextracted directory %s\n", name); | |
382 | skipfile(); | |
383 | return (GOOD); | |
384 | } | |
385 | vprintf(stdout, "extract file %s\n", name); | |
386 | return (genliteraldir(name, curfile.ino)); | |
387 | ||
388 | case IFLNK: | |
389 | lnkbuf[0] = '\0'; | |
390 | pathlen = 0; | |
391 | getfile(xtrlnkfile, xtrlnkskip); | |
392 | if (pathlen == 0) { | |
393 | vprintf(stdout, | |
394 | "%s: zero length symbolic link (ignored)\n", name); | |
bdeceadb KM |
395 | return (GOOD); |
396 | } | |
397 | return (linkit(lnkbuf, name, SYMLINK)); | |
f78e116c KM |
398 | |
399 | case IFCHR: | |
400 | case IFBLK: | |
401 | vprintf(stdout, "extract special file %s\n", name); | |
402 | if (mknod(name, mode, (int)curfile.dip->di_rdev) < 0) { | |
e9e7ecc4 KM |
403 | fprintf(stderr, "%s: ", name); |
404 | (void) fflush(stderr); | |
405 | perror("cannot create special file"); | |
f78e116c KM |
406 | skipfile(); |
407 | return (FAIL); | |
408 | } | |
768eb687 KM |
409 | (void) chown(name, curfile.dip->di_uid, curfile.dip->di_gid); |
410 | (void) chmod(name, mode); | |
f78e116c KM |
411 | skipfile(); |
412 | utime(name, timep); | |
413 | return (GOOD); | |
414 | ||
415 | case IFREG: | |
416 | vprintf(stdout, "extract file %s\n", name); | |
15aeb519 | 417 | if ((ofile = creat(name, 0666)) < 0) { |
e9e7ecc4 KM |
418 | fprintf(stderr, "%s: ", name); |
419 | (void) fflush(stderr); | |
420 | perror("cannot create file"); | |
f78e116c KM |
421 | skipfile(); |
422 | return (FAIL); | |
423 | } | |
768eb687 KM |
424 | (void) fchown(ofile, curfile.dip->di_uid, curfile.dip->di_gid); |
425 | (void) fchmod(ofile, mode); | |
f78e116c | 426 | getfile(xtrfile, xtrskip); |
768eb687 | 427 | (void) close(ofile); |
f78e116c KM |
428 | utime(name, timep); |
429 | return (GOOD); | |
430 | } | |
431 | /* NOTREACHED */ | |
432 | } | |
433 | ||
e108d3a2 KM |
434 | /* |
435 | * skip over bit maps on the tape | |
436 | */ | |
437 | skipmaps() | |
438 | { | |
439 | ||
440 | while (checktype(&spcl, TS_CLRI) == GOOD || | |
441 | checktype(&spcl, TS_BITS) == GOOD) | |
442 | skipfile(); | |
443 | } | |
444 | ||
445 | /* | |
446 | * skip over a file on the tape | |
447 | */ | |
f78e116c KM |
448 | skipfile() |
449 | { | |
450 | extern int null(); | |
451 | ||
452 | curfile.action = SKIP; | |
453 | getfile(null, null); | |
454 | } | |
455 | ||
456 | /* | |
457 | * Do the file extraction, calling the supplied functions | |
458 | * with the blocks | |
459 | */ | |
460 | getfile(f1, f2) | |
461 | int (*f2)(), (*f1)(); | |
462 | { | |
463 | register int i; | |
464 | int curblk = 0; | |
465 | off_t size = spcl.c_dinode.di_size; | |
466 | static char clearedbuf[MAXBSIZE]; | |
467 | char buf[MAXBSIZE / TP_BSIZE][TP_BSIZE]; | |
4f8ea093 | 468 | char junk[TP_BSIZE]; |
f78e116c | 469 | |
2cb5dabb | 470 | if (checktype(&spcl, TS_END) == GOOD) |
f78e116c | 471 | panic("ran off end of tape\n"); |
e108d3a2 | 472 | if (ishead(&spcl) == FAIL) |
f78e116c | 473 | panic("not at beginning of a file\n"); |
e108d3a2 | 474 | if (!gettingfile && setjmp(restart) != 0) |
f78e116c KM |
475 | return; |
476 | gettingfile++; | |
477 | loop: | |
478 | for (i = 0; i < spcl.c_count; i++) { | |
479 | if (spcl.c_addr[i]) { | |
480 | readtape(&buf[curblk++][0]); | |
481 | if (curblk == fssize / TP_BSIZE) { | |
482 | (*f1)(buf, size > TP_BSIZE ? | |
483 | (long) (fssize) : | |
484 | (curblk - 1) * TP_BSIZE + size); | |
485 | curblk = 0; | |
486 | } | |
487 | } else { | |
488 | if (curblk > 0) { | |
489 | (*f1)(buf, size > TP_BSIZE ? | |
490 | (long) (curblk * TP_BSIZE) : | |
491 | (curblk - 1) * TP_BSIZE + size); | |
492 | curblk = 0; | |
493 | } | |
494 | (*f2)(clearedbuf, size > TP_BSIZE ? | |
495 | (long) TP_BSIZE : size); | |
496 | } | |
4f8ea093 KM |
497 | if ((size -= TP_BSIZE) <= 0) { |
498 | for (i++; i < spcl.c_count; i++) | |
499 | if (spcl.c_addr[i]) | |
500 | readtape(junk); | |
9f13f26d | 501 | break; |
4f8ea093 | 502 | } |
f78e116c | 503 | } |
5c5f44c7 | 504 | if (readhdr(&spcl) == GOOD && size > 0) { |
9f13f26d KM |
505 | if (checktype(&spcl, TS_ADDR) == GOOD) |
506 | goto loop; | |
768eb687 | 507 | dprintf(stdout, "Missing address (header) block for %s\n", |
f78e116c | 508 | curfile.name); |
f78e116c | 509 | } |
9f13f26d | 510 | if (curblk > 0) |
f78e116c | 511 | (*f1)(buf, (curblk * TP_BSIZE) + size); |
f78e116c KM |
512 | findinode(&spcl, 1); |
513 | gettingfile = 0; | |
514 | } | |
515 | ||
516 | /* | |
517 | * The next routines are called during file extraction to | |
518 | * put the data into the right form and place. | |
519 | */ | |
520 | xtrfile(buf, size) | |
521 | char *buf; | |
522 | long size; | |
523 | { | |
524 | ||
525 | if (write(ofile, buf, (int) size) == -1) { | |
526 | fprintf(stderr, "write error extracting inode %d, name %s\n", | |
527 | curfile.ino, curfile.name); | |
528 | perror("write"); | |
529 | done(1); | |
530 | } | |
531 | } | |
532 | ||
533 | xtrskip(buf, size) | |
534 | char *buf; | |
535 | long size; | |
536 | { | |
537 | ||
538 | #ifdef lint | |
539 | buf = buf; | |
540 | #endif | |
541 | if (lseek(ofile, size, 1) == (long)-1) { | |
542 | fprintf(stderr, "seek error extracting inode %d, name %s\n", | |
543 | curfile.ino, curfile.name); | |
544 | perror("lseek"); | |
545 | done(1); | |
546 | } | |
547 | } | |
548 | ||
549 | xtrlnkfile(buf, size) | |
550 | char *buf; | |
551 | long size; | |
552 | { | |
553 | ||
554 | pathlen += size; | |
555 | if (pathlen > MAXPATHLEN) { | |
556 | fprintf(stderr, "symbolic link name: %s->%s%s; too long %d\n", | |
557 | curfile.name, lnkbuf, buf, pathlen); | |
558 | done(1); | |
559 | } | |
538cb7bb | 560 | (void) strcat(lnkbuf, buf); |
f78e116c KM |
561 | } |
562 | ||
563 | xtrlnkskip(buf, size) | |
564 | char *buf; | |
565 | long size; | |
566 | { | |
567 | ||
568 | #ifdef lint | |
569 | buf = buf, size = size; | |
570 | #endif | |
571 | fprintf(stderr, "unallocated block in symbolic link %s\n", | |
572 | curfile.name); | |
573 | done(1); | |
574 | } | |
575 | ||
576 | xtrmap(buf, size) | |
577 | char *buf; | |
578 | long size; | |
579 | { | |
580 | ||
581 | bcopy(buf, map, size); | |
cf6db0ab | 582 | map += size; |
f78e116c KM |
583 | } |
584 | ||
585 | xtrmapskip(buf, size) | |
586 | char *buf; | |
587 | long size; | |
588 | { | |
589 | ||
590 | #ifdef lint | |
591 | buf = buf; | |
f78e116c KM |
592 | #endif |
593 | panic("hole in map\n"); | |
cf6db0ab | 594 | map += size; |
f78e116c KM |
595 | } |
596 | ||
597 | null() {;} | |
598 | ||
599 | /* | |
600 | * Do the tape i/o, dealing with volume changes | |
601 | * etc.. | |
602 | */ | |
603 | readtape(b) | |
604 | char *b; | |
605 | { | |
606 | register long i; | |
7851e15d KM |
607 | long rd, newvol; |
608 | int cnt; | |
f78e116c | 609 | |
b97e998a KM |
610 | if (bct < ntrec) { |
611 | bcopy(&tbf[(bct++*TP_BSIZE)], b, (long)TP_BSIZE); | |
612 | blksread++; | |
613 | return; | |
614 | } | |
615 | for (i = 0; i < ntrec; i++) | |
616 | ((struct s_spcl *)&tbf[i*TP_BSIZE])->c_magic = 0; | |
617 | bct = 0; | |
618 | cnt = ntrec*TP_BSIZE; | |
619 | rd = 0; | |
620 | getmore: | |
e9e7ecc4 | 621 | #ifdef RRESTORE |
b97e998a | 622 | i = rmtread(&tbf[rd], cnt); |
f78e116c | 623 | #else |
b97e998a | 624 | i = read(mt, &tbf[rd], cnt); |
f78e116c | 625 | #endif |
b97e998a KM |
626 | if (i > 0 && i != ntrec*TP_BSIZE) { |
627 | if (pipein) { | |
74025ab9 KM |
628 | rd += i; |
629 | cnt -= i; | |
630 | if (cnt > 0) | |
631 | goto getmore; | |
632 | i = rd; | |
b97e998a KM |
633 | } else { |
634 | if (i % TP_BSIZE != 0) | |
635 | panic("partial block read: %d should be %d\n", | |
636 | i, ntrec * TP_BSIZE); | |
637 | bcopy((char *)&endoftapemark, &tbf[i], | |
638 | (long)TP_BSIZE); | |
74025ab9 | 639 | } |
b97e998a KM |
640 | } |
641 | if (i < 0) { | |
642 | fprintf(stderr, "Tape read error while "); | |
643 | switch (curfile.action) { | |
644 | default: | |
645 | fprintf(stderr, "trying to set up tape\n"); | |
646 | break; | |
647 | case UNKNOWN: | |
648 | fprintf(stderr, "trying to resyncronize\n"); | |
649 | break; | |
650 | case USING: | |
651 | fprintf(stderr, "restoring %s\n", curfile.name); | |
652 | break; | |
653 | case SKIP: | |
654 | fprintf(stderr, "skipping over inode %d\n", | |
655 | curfile.ino); | |
656 | break; | |
657 | } | |
658 | if (!yflag && !reply("continue")) | |
659 | done(1); | |
660 | i = ntrec*TP_BSIZE; | |
661 | bzero(tbf, i); | |
e9e7ecc4 | 662 | #ifdef RRESTORE |
b97e998a | 663 | if (rmtseek(i, 1) < 0) |
f78e116c | 664 | #else |
b97e998a | 665 | if (lseek(mt, i, 1) == (long)-1) |
f78e116c | 666 | #endif |
b97e998a KM |
667 | { |
668 | perror("continuation failed"); | |
669 | done(1); | |
f78e116c | 670 | } |
b97e998a KM |
671 | } |
672 | if (i == 0) { | |
ad073f89 KM |
673 | if (!pipein) { |
674 | newvol = volno + 1; | |
675 | volno = 0; | |
676 | getvol(newvol); | |
677 | readtape(b); | |
f78e116c KM |
678 | return; |
679 | } | |
ad073f89 KM |
680 | if (rd % TP_BSIZE != 0) |
681 | panic("partial block read: %d should be %d\n", | |
682 | rd, ntrec * TP_BSIZE); | |
683 | bcopy((char *)&endoftapemark, &tbf[rd], (long)TP_BSIZE); | |
f78e116c KM |
684 | } |
685 | bcopy(&tbf[(bct++*TP_BSIZE)], b, (long)TP_BSIZE); | |
2cb5dabb | 686 | blksread++; |
f78e116c KM |
687 | } |
688 | ||
b97e998a KM |
689 | findtapeblksize() |
690 | { | |
691 | register long i; | |
692 | ||
693 | for (i = 0; i < ntrec; i++) | |
694 | ((struct s_spcl *)&tbf[i * TP_BSIZE])->c_magic = 0; | |
695 | bct = 0; | |
696 | #ifdef RRESTORE | |
697 | i = rmtread(tbf, ntrec * TP_BSIZE); | |
698 | #else | |
699 | i = read(mt, tbf, ntrec * TP_BSIZE); | |
700 | #endif | |
701 | if (i <= 0) { | |
702 | perror("Tape read error"); | |
703 | done(1); | |
704 | } | |
705 | if (i % TP_BSIZE != 0) { | |
706 | fprintf(stderr, "Tape block size (%d) %s (%d)\n", | |
707 | i, "is not a multiple of dump block size", TP_BSIZE); | |
708 | done(1); | |
709 | } | |
710 | ntrec = i / TP_BSIZE; | |
711 | vprintf(stdout, "Tape block size is %d\n", ntrec); | |
712 | } | |
713 | ||
f78e116c KM |
714 | flsht() |
715 | { | |
716 | ||
19230a53 | 717 | bct = ntrec+1; |
f78e116c KM |
718 | } |
719 | ||
f78e116c KM |
720 | closemt() |
721 | { | |
722 | if (mt < 0) | |
723 | return; | |
e9e7ecc4 | 724 | #ifdef RRESTORE |
f78e116c KM |
725 | rmtclose(); |
726 | #else | |
768eb687 | 727 | (void) close(mt); |
f78e116c KM |
728 | #endif |
729 | } | |
730 | ||
731 | checkvol(b, t) | |
732 | struct s_spcl *b; | |
733 | long t; | |
734 | { | |
735 | ||
2cb5dabb KM |
736 | if (b->c_volume != t) |
737 | return(FAIL); | |
738 | return(GOOD); | |
f78e116c KM |
739 | } |
740 | ||
741 | readhdr(b) | |
742 | struct s_spcl *b; | |
743 | { | |
744 | ||
5c5f44c7 | 745 | if (gethead(b) == FAIL) { |
768eb687 | 746 | dprintf(stdout, "readhdr fails at %d blocks\n", blksread); |
2cb5dabb | 747 | return(FAIL); |
5c5f44c7 | 748 | } |
2cb5dabb | 749 | return(GOOD); |
f78e116c KM |
750 | } |
751 | ||
752 | /* | |
753 | * read the tape into buf, then return whether or | |
754 | * or not it is a header block. | |
755 | */ | |
756 | gethead(buf) | |
757 | struct s_spcl *buf; | |
758 | { | |
b4c41341 | 759 | long i, *j; |
f78e116c KM |
760 | union u_ospcl { |
761 | char dummy[TP_BSIZE]; | |
762 | struct s_ospcl { | |
2cb5dabb KM |
763 | long c_type; |
764 | long c_date; | |
765 | long c_ddate; | |
766 | long c_volume; | |
767 | long c_tapea; | |
cf6db0ab | 768 | u_short c_inumber; |
2cb5dabb KM |
769 | long c_magic; |
770 | long c_checksum; | |
f78e116c KM |
771 | struct odinode { |
772 | unsigned short odi_mode; | |
cf6db0ab KM |
773 | u_short odi_nlink; |
774 | u_short odi_uid; | |
775 | u_short odi_gid; | |
2cb5dabb KM |
776 | long odi_size; |
777 | long odi_rdev; | |
f78e116c | 778 | char odi_addr[36]; |
2cb5dabb KM |
779 | long odi_atime; |
780 | long odi_mtime; | |
781 | long odi_ctime; | |
f78e116c | 782 | } c_dinode; |
2cb5dabb KM |
783 | long c_count; |
784 | char c_addr[256]; | |
f78e116c KM |
785 | } s_ospcl; |
786 | } u_ospcl; | |
787 | ||
788 | if (!cvtflag) { | |
789 | readtape((char *)buf); | |
b4c41341 KS |
790 | if (buf->c_magic != NFS_MAGIC) { |
791 | if (swabl(buf->c_magic) != NFS_MAGIC) | |
792 | return (FAIL); | |
793 | if (!Bcvt) { | |
794 | vprintf(stdout, "Note: Doing Byte swapping\n"); | |
795 | Bcvt = 1; | |
796 | } | |
797 | } | |
798 | if (checksum((int *)buf) == FAIL) | |
799 | return (FAIL); | |
800 | if (Bcvt) | |
801 | swabst("8l4s31l", (char *)buf); | |
5c5f44c7 | 802 | goto good; |
f78e116c KM |
803 | } |
804 | readtape((char *)(&u_ospcl.s_ospcl)); | |
805 | bzero((char *)buf, (long)TP_BSIZE); | |
806 | buf->c_type = u_ospcl.s_ospcl.c_type; | |
807 | buf->c_date = u_ospcl.s_ospcl.c_date; | |
808 | buf->c_ddate = u_ospcl.s_ospcl.c_ddate; | |
809 | buf->c_volume = u_ospcl.s_ospcl.c_volume; | |
810 | buf->c_tapea = u_ospcl.s_ospcl.c_tapea; | |
811 | buf->c_inumber = u_ospcl.s_ospcl.c_inumber; | |
812 | buf->c_checksum = u_ospcl.s_ospcl.c_checksum; | |
813 | buf->c_magic = u_ospcl.s_ospcl.c_magic; | |
814 | buf->c_dinode.di_mode = u_ospcl.s_ospcl.c_dinode.odi_mode; | |
815 | buf->c_dinode.di_nlink = u_ospcl.s_ospcl.c_dinode.odi_nlink; | |
816 | buf->c_dinode.di_uid = u_ospcl.s_ospcl.c_dinode.odi_uid; | |
817 | buf->c_dinode.di_gid = u_ospcl.s_ospcl.c_dinode.odi_gid; | |
818 | buf->c_dinode.di_size = u_ospcl.s_ospcl.c_dinode.odi_size; | |
819 | buf->c_dinode.di_rdev = u_ospcl.s_ospcl.c_dinode.odi_rdev; | |
820 | buf->c_dinode.di_atime = u_ospcl.s_ospcl.c_dinode.odi_atime; | |
821 | buf->c_dinode.di_mtime = u_ospcl.s_ospcl.c_dinode.odi_mtime; | |
822 | buf->c_dinode.di_ctime = u_ospcl.s_ospcl.c_dinode.odi_ctime; | |
823 | buf->c_count = u_ospcl.s_ospcl.c_count; | |
2cb5dabb | 824 | bcopy(u_ospcl.s_ospcl.c_addr, buf->c_addr, (long)256); |
f78e116c | 825 | if (u_ospcl.s_ospcl.c_magic != OFS_MAGIC || |
5c5f44c7 | 826 | checksum((int *)(&u_ospcl.s_ospcl)) == FAIL) |
2cb5dabb | 827 | return(FAIL); |
f78e116c | 828 | buf->c_magic = NFS_MAGIC; |
5c5f44c7 KM |
829 | |
830 | good: | |
b4c41341 KS |
831 | j = buf->c_dinode.di_ic.ic_size.val; |
832 | i = j[1]; | |
833 | if (buf->c_dinode.di_size == 0 && | |
834 | (buf->c_dinode.di_mode & IFMT) == IFDIR && Qcvt==0) { | |
835 | if (*j || i) { | |
836 | printf("Note: Doing Quad swapping\n"); | |
837 | Qcvt = 1; | |
838 | } | |
839 | } | |
840 | if (Qcvt) { | |
841 | j[1] = *j; *j = i; | |
842 | } | |
5c5f44c7 KM |
843 | switch (buf->c_type) { |
844 | ||
845 | case TS_CLRI: | |
846 | case TS_BITS: | |
847 | /* | |
848 | * Have to patch up missing information in bit map headers | |
849 | */ | |
850 | buf->c_inumber = 0; | |
851 | buf->c_dinode.di_size = buf->c_count * TP_BSIZE; | |
852 | for (i = 0; i < buf->c_count; i++) | |
853 | buf->c_addr[i]++; | |
854 | break; | |
855 | ||
856 | case TS_TAPE: | |
857 | case TS_END: | |
858 | buf->c_inumber = 0; | |
859 | break; | |
860 | ||
861 | case TS_INODE: | |
862 | case TS_ADDR: | |
863 | break; | |
864 | ||
865 | default: | |
866 | panic("gethead: unknown inode type %d\n", buf->c_type); | |
867 | break; | |
868 | } | |
2cb5dabb KM |
869 | if (dflag) |
870 | accthdr(buf); | |
871 | return(GOOD); | |
872 | } | |
873 | ||
874 | /* | |
875 | * Check that a header is where it belongs and predict the next header | |
876 | */ | |
877 | accthdr(header) | |
878 | struct s_spcl *header; | |
879 | { | |
7851e15d | 880 | static ino_t previno = 0x7fffffff; |
2cb5dabb KM |
881 | static int prevtype; |
882 | static long predict; | |
883 | long blks, i; | |
884 | ||
5c5f44c7 KM |
885 | if (header->c_type == TS_TAPE) { |
886 | fprintf(stderr, "Volume header\n"); | |
887 | return; | |
888 | } | |
7851e15d | 889 | if (previno == 0x7fffffff) |
2cb5dabb KM |
890 | goto newcalc; |
891 | switch (prevtype) { | |
2cb5dabb | 892 | case TS_BITS: |
5c5f44c7 | 893 | fprintf(stderr, "Dump mask header"); |
2cb5dabb KM |
894 | break; |
895 | case TS_CLRI: | |
5c5f44c7 | 896 | fprintf(stderr, "Remove mask header"); |
2cb5dabb KM |
897 | break; |
898 | case TS_INODE: | |
5c5f44c7 | 899 | fprintf(stderr, "File header, ino %d", previno); |
2cb5dabb KM |
900 | break; |
901 | case TS_ADDR: | |
5c5f44c7 | 902 | fprintf(stderr, "File continuation header, ino %d", previno); |
2cb5dabb KM |
903 | break; |
904 | case TS_END: | |
5c5f44c7 | 905 | fprintf(stderr, "End of tape header"); |
2cb5dabb KM |
906 | break; |
907 | } | |
2cb5dabb KM |
908 | if (predict != blksread - 1) |
909 | fprintf(stderr, "; predicted %d blocks, got %d blocks", | |
910 | predict, blksread - 1); | |
911 | fprintf(stderr, "\n"); | |
912 | newcalc: | |
913 | blks = 0; | |
5c5f44c7 | 914 | if (header->c_type != TS_END) |
2cb5dabb KM |
915 | for (i = 0; i < header->c_count; i++) |
916 | if (header->c_addr[i] != 0) | |
917 | blks++; | |
918 | predict = blks; | |
919 | blksread = 0; | |
920 | prevtype = header->c_type; | |
921 | previno = header->c_inumber; | |
f78e116c KM |
922 | } |
923 | ||
924 | /* | |
925 | * Find an inode header. | |
926 | * Complain if had to skip, and complain is set. | |
927 | */ | |
928 | findinode(header, complain) | |
929 | struct s_spcl *header; | |
930 | int complain; | |
931 | { | |
2cb5dabb | 932 | static long skipcnt = 0; |
f78e116c KM |
933 | |
934 | curfile.name = "<name unknown>"; | |
935 | curfile.action = UNKNOWN; | |
936 | curfile.dip = (struct dinode *)NIL; | |
937 | curfile.ino = 0; | |
2cb5dabb KM |
938 | if (ishead(header) == FAIL) { |
939 | skipcnt++; | |
940 | while (gethead(header) == FAIL) | |
f78e116c | 941 | skipcnt++; |
2cb5dabb | 942 | } |
f78e116c | 943 | for (;;) { |
2cb5dabb | 944 | if (checktype(header, TS_INODE) == GOOD) { |
f78e116c KM |
945 | curfile.dip = &header->c_dinode; |
946 | curfile.ino = header->c_inumber; | |
947 | break; | |
948 | } | |
2cb5dabb | 949 | if (checktype(header, TS_END) == GOOD) { |
f78e116c KM |
950 | curfile.ino = maxino; |
951 | break; | |
952 | } | |
2cb5dabb | 953 | if (checktype(header, TS_CLRI) == GOOD) { |
f78e116c | 954 | curfile.name = "<file removal list>"; |
e108d3a2 | 955 | break; |
f78e116c | 956 | } |
2cb5dabb | 957 | if (checktype(header, TS_BITS) == GOOD) { |
f78e116c | 958 | curfile.name = "<file dump list>"; |
e108d3a2 | 959 | break; |
f78e116c | 960 | } |
2cb5dabb | 961 | while (gethead(header) == FAIL) |
f78e116c KM |
962 | skipcnt++; |
963 | } | |
964 | if (skipcnt > 0 && complain) | |
dd1900f1 | 965 | fprintf(stderr, "resync restore, skipped %d blocks\n", skipcnt); |
f78e116c KM |
966 | skipcnt = 0; |
967 | } | |
968 | ||
969 | /* | |
970 | * return whether or not the buffer contains a header block | |
971 | */ | |
972 | ishead(buf) | |
973 | struct s_spcl *buf; | |
974 | { | |
975 | ||
976 | if (buf->c_magic != NFS_MAGIC) | |
2cb5dabb KM |
977 | return(FAIL); |
978 | return(GOOD); | |
f78e116c KM |
979 | } |
980 | ||
981 | checktype(b, t) | |
982 | struct s_spcl *b; | |
983 | int t; | |
984 | { | |
985 | ||
2cb5dabb KM |
986 | if (b->c_type != t) |
987 | return(FAIL); | |
988 | return(GOOD); | |
f78e116c KM |
989 | } |
990 | ||
991 | checksum(b) | |
992 | register int *b; | |
993 | { | |
994 | register int i, j; | |
995 | ||
996 | j = sizeof(union u_spcl) / sizeof(int); | |
997 | i = 0; | |
b4c41341 KS |
998 | if(!Bcvt) { |
999 | do | |
1000 | i += *b++; | |
1001 | while (--j); | |
1002 | } else { | |
1003 | /* What happens if we want to read restore tapes | |
1004 | for a 16bit int machine??? */ | |
1005 | do | |
1006 | i += swabl(*b++); | |
1007 | while (--j); | |
1008 | } | |
1009 | ||
f78e116c KM |
1010 | if (i != CHECKSUM) { |
1011 | fprintf(stderr, "Checksum error %o, inode %d file %s\n", i, | |
1012 | curfile.ino, curfile.name); | |
2cb5dabb | 1013 | return(FAIL); |
f78e116c | 1014 | } |
2cb5dabb | 1015 | return(GOOD); |
f78e116c KM |
1016 | } |
1017 | ||
e9e7ecc4 | 1018 | #ifdef RRESTORE |
74025ab9 | 1019 | /* VARARGS1 */ |
f78e116c KM |
1020 | msg(cp, a1, a2, a3) |
1021 | char *cp; | |
1022 | { | |
1023 | ||
1024 | fprintf(stderr, cp, a1, a2, a3); | |
1025 | } | |
e9e7ecc4 | 1026 | #endif RRESTORE |
b4c41341 KS |
1027 | |
1028 | swabst(cp, sp) | |
1029 | register char *cp, *sp; | |
1030 | { | |
1031 | int n = 0; | |
1032 | char c; | |
1033 | while(*cp) { | |
1034 | switch (*cp) { | |
1035 | case '0': case '1': case '2': case '3': case '4': | |
1036 | case '5': case '6': case '7': case '8': case '9': | |
1037 | n = (n * 10) + (*cp++ - '0'); | |
1038 | continue; | |
1039 | ||
1040 | case 's': case 'w': case 'h': | |
1041 | c = sp[0]; sp[0] = sp[1]; sp[1] = c; | |
1042 | sp++; | |
1043 | break; | |
1044 | ||
1045 | case 'l': | |
1046 | c = sp[0]; sp[0] = sp[3]; sp[3] = c; | |
1047 | c = sp[2]; sp[2] = sp[1]; sp[1] = c; | |
1048 | sp += 3; | |
1049 | } | |
1050 | sp++; /* Any other character, like 'b' counts as byte. */ | |
1051 | if (n <= 1) { | |
1052 | n = 0; cp++; | |
1053 | } else | |
1054 | n--; | |
1055 | } | |
1056 | } | |
1057 | swabl(x) { unsigned long l = x; swabst("l", (char *)&l); return l; } |