Commit | Line | Data |
---|---|---|
f78e116c | 1 | #ifndef lint |
ad073f89 | 2 | static char sccsid[] = "@(#)tape.c 3.28 (Berkeley) 85/04/23"; |
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 | 42 | flsht(); |
b97e998a KM |
43 | if (bflag) |
44 | newtapebuf(ntrec); | |
45 | else | |
46 | newtapebuf(NTREC > HIGHDENSITYTREC ? NTREC : HIGHDENSITYTREC); | |
9c695c61 | 47 | terminal = stdin; |
e9e7ecc4 | 48 | #ifdef RRESTORE |
f78e116c | 49 | host = source; |
7eb08dfe KM |
50 | tape = index(host, ':'); |
51 | if (tape == 0) { | |
f78e116c | 52 | nohost: |
5c5f44c7 | 53 | msg("need keyletter ``f'' and device ``host:tape''\n"); |
f78e116c KM |
54 | done(1); |
55 | } | |
7eb08dfe KM |
56 | *tape++ = '\0'; |
57 | (void) strcpy(magtape, tape); | |
f78e116c KM |
58 | if (rmthost(host) == 0) |
59 | done(1); | |
60 | setuid(getuid()); /* no longer need or want root privileges */ | |
61 | #else | |
9c695c61 | 62 | if (strcmp(source, "-") == 0) { |
b677c5d7 KM |
63 | /* |
64 | * Since input is coming from a pipe we must establish | |
65 | * our own connection to the terminal. | |
66 | */ | |
67 | terminal = fopen("/dev/tty", "r"); | |
68 | if (terminal == NULL) { | |
b8eb5f1f KM |
69 | perror("Cannot open(\"/dev/tty\")"); |
70 | terminal = fopen("/dev/null", "r"); | |
71 | if (terminal == NULL) { | |
72 | perror("Cannot open(\"/dev/null\")"); | |
73 | done(1); | |
74 | } | |
b677c5d7 | 75 | } |
2cb5dabb | 76 | pipein++; |
2cb5dabb | 77 | } |
7eb08dfe | 78 | (void) strcpy(magtape, source); |
e9e7ecc4 | 79 | #endif RRESTORE |
f78e116c KM |
80 | } |
81 | ||
b97e998a KM |
82 | newtapebuf(size) |
83 | long size; | |
84 | { | |
85 | static tbfsize = -1; | |
86 | ||
87 | ntrec = size; | |
88 | if (size <= tbfsize) | |
89 | return; | |
90 | if (tbf != NULL) | |
91 | free(tbf); | |
92 | tbf = (char *)malloc(size * TP_BSIZE); | |
93 | if (tbf == NULL) { | |
94 | fprintf(stderr, "Cannot allocate space for tape buffer\n"); | |
95 | done(1); | |
96 | } | |
97 | tbfsize = size; | |
98 | } | |
99 | ||
f78e116c KM |
100 | /* |
101 | * Verify that the tape drive can be accessed and | |
102 | * that it actually is a dump tape. | |
103 | */ | |
104 | setup() | |
105 | { | |
2cb5dabb | 106 | int i, j, *ip; |
f78e116c KM |
107 | struct stat stbuf; |
108 | extern char *ctime(); | |
109 | extern int xtrmap(), xtrmapskip(); | |
110 | ||
111 | vprintf(stdout, "Verify tape and initialize maps\n"); | |
e9e7ecc4 | 112 | #ifdef RRESTORE |
f78e116c KM |
113 | if ((mt = rmtopen(magtape, 0)) < 0) |
114 | #else | |
2cb5dabb KM |
115 | if (pipein) |
116 | mt = 0; | |
117 | else if ((mt = open(magtape, 0)) < 0) | |
f78e116c KM |
118 | #endif |
119 | { | |
e9e7ecc4 | 120 | perror(magtape); |
f78e116c KM |
121 | done(1); |
122 | } | |
768eb687 KM |
123 | volno = 1; |
124 | setdumpnum(); | |
f78e116c | 125 | flsht(); |
b97e998a KM |
126 | if (!pipein && !bflag) |
127 | findtapeblksize(); | |
5c5f44c7 | 128 | if (gethead(&spcl) == FAIL) { |
f78e116c KM |
129 | bct--; /* push back this block */ |
130 | cvtflag++; | |
5c5f44c7 | 131 | if (gethead(&spcl) == FAIL) { |
f78e116c KM |
132 | fprintf(stderr, "Tape is not a dump tape\n"); |
133 | done(1); | |
134 | } | |
135 | fprintf(stderr, "Converting to new file system format.\n"); | |
136 | } | |
2cb5dabb KM |
137 | if (pipein) { |
138 | endoftapemark.s_spcl.c_magic = cvtflag ? OFS_MAGIC : NFS_MAGIC; | |
139 | endoftapemark.s_spcl.c_type = TS_END; | |
140 | ip = (int *)&endoftapemark; | |
141 | j = sizeof(union u_spcl) / sizeof(int); | |
142 | i = 0; | |
143 | do | |
144 | i += *ip++; | |
145 | while (--j); | |
146 | endoftapemark.s_spcl.c_checksum = CHECKSUM - i; | |
147 | } | |
6a8e228c KM |
148 | if (vflag || command == 't') { |
149 | fprintf(stdout, "Dump date: %s", ctime(&spcl.c_date)); | |
150 | fprintf(stdout, "Dumped from: %s", ctime(&spcl.c_ddate)); | |
151 | } | |
f78e116c | 152 | dumptime = spcl.c_ddate; |
2cb5dabb | 153 | dumpdate = spcl.c_date; |
f78e116c | 154 | if (stat(".", &stbuf) < 0) { |
e9e7ecc4 | 155 | perror("cannot stat ."); |
f78e116c KM |
156 | done(1); |
157 | } | |
bdeceadb KM |
158 | if (stbuf.st_blksize > 0 && stbuf.st_blksize <= MAXBSIZE) |
159 | fssize = stbuf.st_blksize; | |
160 | if (((fssize - 1) & fssize) != 0) { | |
f78e116c KM |
161 | fprintf(stderr, "bad block size %d\n", fssize); |
162 | done(1); | |
163 | } | |
2cb5dabb | 164 | if (checkvol(&spcl, (long)1) == FAIL) { |
f78e116c KM |
165 | fprintf(stderr, "Tape is not volume 1 of the dump\n"); |
166 | done(1); | |
167 | } | |
2cb5dabb KM |
168 | if (readhdr(&spcl) == FAIL) |
169 | panic("no header after volume mark!\n"); | |
170 | findinode(&spcl, 1); | |
171 | if (checktype(&spcl, TS_CLRI) == FAIL) { | |
f78e116c KM |
172 | fprintf(stderr, "Cannot find file removal list\n"); |
173 | done(1); | |
174 | } | |
2cb5dabb | 175 | maxino = (spcl.c_count * TP_BSIZE * NBBY) + 1; |
768eb687 | 176 | dprintf(stdout, "maxino = %d\n", maxino); |
7851e15d | 177 | map = calloc((unsigned)1, (unsigned)howmany(maxino, NBBY)); |
f78e116c KM |
178 | if (map == (char *)NIL) |
179 | panic("no memory for file removal list\n"); | |
cf6db0ab | 180 | clrimap = map; |
f78e116c KM |
181 | curfile.action = USING; |
182 | getfile(xtrmap, xtrmapskip); | |
2cb5dabb | 183 | if (checktype(&spcl, TS_BITS) == FAIL) { |
f78e116c KM |
184 | fprintf(stderr, "Cannot find file dump list\n"); |
185 | done(1); | |
186 | } | |
7851e15d | 187 | map = calloc((unsigned)1, (unsigned)howmany(maxino, NBBY)); |
f78e116c KM |
188 | if (map == (char *)NULL) |
189 | panic("no memory for file dump list\n"); | |
cf6db0ab | 190 | dumpmap = map; |
f78e116c KM |
191 | curfile.action = USING; |
192 | getfile(xtrmap, xtrmapskip); | |
f78e116c KM |
193 | } |
194 | ||
170639fd KM |
195 | /* |
196 | * Prompt user to load a new dump volume. | |
197 | * "Nextvol" is the next suggested volume to use. | |
198 | * This suggested volume is enforced when doing full | |
199 | * or incremental restores, but can be overrridden by | |
200 | * the user when only extracting a subset of the files. | |
201 | */ | |
f78e116c KM |
202 | getvol(nextvol) |
203 | long nextvol; | |
204 | { | |
205 | long newvol; | |
170639fd | 206 | long savecnt, i; |
f78e116c KM |
207 | union u_spcl tmpspcl; |
208 | # define tmpbuf tmpspcl.s_spcl | |
209 | ||
a162cc0b | 210 | if (nextvol == 1) { |
170639fd | 211 | tapesread = 0; |
a162cc0b KM |
212 | gettingfile = 0; |
213 | } | |
2cb5dabb | 214 | if (pipein) { |
e108d3a2 | 215 | if (nextvol != 1) |
2cb5dabb | 216 | panic("Changing volumes on pipe input?\n"); |
e108d3a2 KM |
217 | if (volno == 1) |
218 | return; | |
219 | goto gethdr; | |
2cb5dabb KM |
220 | } |
221 | savecnt = blksread; | |
f78e116c | 222 | again: |
e108d3a2 KM |
223 | if (pipein) |
224 | done(1); /* pipes do not get a second chance */ | |
f78e116c KM |
225 | if (command == 'R' || command == 'r' || curfile.action != SKIP) |
226 | newvol = nextvol; | |
227 | else | |
228 | newvol = 0; | |
229 | while (newvol <= 0) { | |
170639fd KM |
230 | if (tapesread == 0) { |
231 | fprintf(stderr, "%s%s%s%s%s", | |
232 | "You have not read any tapes yet.\n", | |
233 | "Unless you know which volume your", | |
234 | " file(s) are on you should start\n", | |
235 | "with the last volume and work", | |
236 | " towards towards the first.\n"); | |
237 | } else { | |
238 | fprintf(stderr, "You have read volumes"); | |
239 | strcpy(tbf, ": "); | |
240 | for (i = 1; i < 32; i++) | |
241 | if (tapesread & (1 << i)) { | |
242 | fprintf(stderr, "%s%d", tbf, i); | |
243 | strcpy(tbf, ", "); | |
244 | } | |
245 | fprintf(stderr, "\n"); | |
246 | } | |
538cb7bb | 247 | do { |
b677c5d7 KM |
248 | fprintf(stderr, "Specify next volume #: "); |
249 | (void) fflush(stderr); | |
250 | (void) fgets(tbf, BUFSIZ, terminal); | |
251 | } while (!feof(terminal) && tbf[0] == '\n'); | |
252 | if (feof(terminal)) | |
538cb7bb | 253 | done(1); |
f78e116c KM |
254 | newvol = atoi(tbf); |
255 | if (newvol <= 0) { | |
256 | fprintf(stderr, | |
257 | "Volume numbers are positive numerics\n"); | |
258 | } | |
259 | } | |
170639fd KM |
260 | if (newvol == volno) { |
261 | tapesread |= 1 << volno; | |
f78e116c | 262 | return; |
170639fd | 263 | } |
f78e116c | 264 | closemt(); |
7eb08dfe KM |
265 | fprintf(stderr, "Mount tape volume %d\n", newvol); |
266 | fprintf(stderr, "then enter tape name (default: %s) ", magtape); | |
b677c5d7 | 267 | (void) fflush(stderr); |
7eb08dfe KM |
268 | (void) fgets(tbf, BUFSIZ, terminal); |
269 | if (feof(terminal)) | |
270 | done(1); | |
271 | if (tbf[0] != '\n') { | |
272 | (void) strcpy(magtape, tbf); | |
273 | magtape[strlen(magtape) - 1] = '\0'; | |
274 | } | |
e9e7ecc4 | 275 | #ifdef RRESTORE |
f78e116c KM |
276 | if ((mt = rmtopen(magtape, 0)) == -1) |
277 | #else | |
278 | if ((mt = open(magtape, 0)) == -1) | |
279 | #endif | |
280 | { | |
7eb08dfe KM |
281 | fprintf(stderr, "Cannot open %s\n", magtape); |
282 | volno = -1; | |
f78e116c KM |
283 | goto again; |
284 | } | |
e108d3a2 | 285 | gethdr: |
f78e116c | 286 | volno = newvol; |
768eb687 | 287 | setdumpnum(); |
f78e116c | 288 | flsht(); |
2cb5dabb | 289 | if (readhdr(&tmpbuf) == FAIL) { |
f78e116c KM |
290 | fprintf(stderr, "tape is not dump tape\n"); |
291 | volno = 0; | |
292 | goto again; | |
293 | } | |
2cb5dabb | 294 | if (checkvol(&tmpbuf, volno) == FAIL) { |
f78e116c KM |
295 | fprintf(stderr, "Wrong volume (%d)\n", tmpbuf.c_volume); |
296 | volno = 0; | |
297 | goto again; | |
298 | } | |
2cb5dabb | 299 | if (tmpbuf.c_date != dumpdate || tmpbuf.c_ddate != dumptime) { |
3dbddecd KM |
300 | fprintf(stderr, "Wrong dump date\n\tgot: %s", |
301 | ctime(&tmpbuf.c_date)); | |
302 | fprintf(stderr, "\twanted: %s", ctime(&dumpdate)); | |
2cb5dabb KM |
303 | volno = 0; |
304 | goto again; | |
305 | } | |
170639fd | 306 | tapesread |= 1 << volno; |
5c5f44c7 | 307 | blksread = savecnt; |
f78e116c KM |
308 | if (curfile.action == USING) { |
309 | if (volno == 1) | |
310 | panic("active file into volume 1\n"); | |
311 | return; | |
312 | } | |
5c5f44c7 | 313 | (void) gethead(&spcl); |
f78e116c KM |
314 | findinode(&spcl, curfile.action == UNKNOWN ? 1 : 0); |
315 | if (gettingfile) { | |
316 | gettingfile = 0; | |
317 | longjmp(restart, 1); | |
318 | } | |
319 | } | |
320 | ||
768eb687 KM |
321 | /* |
322 | * handle multiple dumps per tape by skipping forward to the | |
323 | * appropriate one. | |
324 | */ | |
325 | setdumpnum() | |
326 | { | |
327 | struct mtop tcom; | |
328 | ||
329 | if (dumpnum == 1 || volno != 1) | |
330 | return; | |
331 | if (pipein) { | |
332 | fprintf(stderr, "Cannot have multiple dumps on pipe input\n"); | |
333 | done(1); | |
334 | } | |
335 | tcom.mt_op = MTFSF; | |
336 | tcom.mt_count = dumpnum - 1; | |
e9e7ecc4 | 337 | #ifdef RRESTORE |
768eb687 KM |
338 | rmtioctl(MTFSF, dumpnum - 1); |
339 | #else | |
538cb7bb | 340 | if (ioctl(mt, (int)MTIOCTOP, (char *)&tcom) < 0) |
768eb687 KM |
341 | perror("ioctl MTFSF"); |
342 | #endif | |
343 | } | |
344 | ||
f78e116c KM |
345 | extractfile(name) |
346 | char *name; | |
347 | { | |
348 | int mode; | |
349 | time_t timep[2]; | |
350 | struct entry *ep; | |
351 | extern int xtrlnkfile(), xtrlnkskip(); | |
352 | extern int xtrfile(), xtrskip(); | |
353 | ||
354 | curfile.name = name; | |
355 | curfile.action = USING; | |
356 | timep[0] = curfile.dip->di_atime; | |
357 | timep[1] = curfile.dip->di_mtime; | |
358 | mode = curfile.dip->di_mode; | |
359 | switch (mode & IFMT) { | |
360 | ||
361 | default: | |
362 | fprintf(stderr, "%s: unknown file mode 0%o\n", name, mode); | |
363 | skipfile(); | |
364 | return (FAIL); | |
365 | ||
366 | case IFDIR: | |
367 | if (mflag) { | |
368 | ep = lookupname(name); | |
369 | if (ep == NIL || ep->e_flags & EXTRACT) | |
370 | panic("unextracted directory %s\n", name); | |
371 | skipfile(); | |
372 | return (GOOD); | |
373 | } | |
374 | vprintf(stdout, "extract file %s\n", name); | |
375 | return (genliteraldir(name, curfile.ino)); | |
376 | ||
377 | case IFLNK: | |
378 | lnkbuf[0] = '\0'; | |
379 | pathlen = 0; | |
380 | getfile(xtrlnkfile, xtrlnkskip); | |
381 | if (pathlen == 0) { | |
382 | vprintf(stdout, | |
383 | "%s: zero length symbolic link (ignored)\n", name); | |
bdeceadb KM |
384 | return (GOOD); |
385 | } | |
386 | return (linkit(lnkbuf, name, SYMLINK)); | |
f78e116c KM |
387 | |
388 | case IFCHR: | |
389 | case IFBLK: | |
390 | vprintf(stdout, "extract special file %s\n", name); | |
391 | if (mknod(name, mode, (int)curfile.dip->di_rdev) < 0) { | |
e9e7ecc4 KM |
392 | fprintf(stderr, "%s: ", name); |
393 | (void) fflush(stderr); | |
394 | perror("cannot create special file"); | |
f78e116c KM |
395 | skipfile(); |
396 | return (FAIL); | |
397 | } | |
768eb687 KM |
398 | (void) chown(name, curfile.dip->di_uid, curfile.dip->di_gid); |
399 | (void) chmod(name, mode); | |
f78e116c KM |
400 | skipfile(); |
401 | utime(name, timep); | |
402 | return (GOOD); | |
403 | ||
404 | case IFREG: | |
405 | vprintf(stdout, "extract file %s\n", name); | |
15aeb519 | 406 | if ((ofile = creat(name, 0666)) < 0) { |
e9e7ecc4 KM |
407 | fprintf(stderr, "%s: ", name); |
408 | (void) fflush(stderr); | |
409 | perror("cannot create file"); | |
f78e116c KM |
410 | skipfile(); |
411 | return (FAIL); | |
412 | } | |
768eb687 KM |
413 | (void) fchown(ofile, curfile.dip->di_uid, curfile.dip->di_gid); |
414 | (void) fchmod(ofile, mode); | |
f78e116c | 415 | getfile(xtrfile, xtrskip); |
768eb687 | 416 | (void) close(ofile); |
f78e116c KM |
417 | utime(name, timep); |
418 | return (GOOD); | |
419 | } | |
420 | /* NOTREACHED */ | |
421 | } | |
422 | ||
e108d3a2 KM |
423 | /* |
424 | * skip over bit maps on the tape | |
425 | */ | |
426 | skipmaps() | |
427 | { | |
428 | ||
429 | while (checktype(&spcl, TS_CLRI) == GOOD || | |
430 | checktype(&spcl, TS_BITS) == GOOD) | |
431 | skipfile(); | |
432 | } | |
433 | ||
434 | /* | |
435 | * skip over a file on the tape | |
436 | */ | |
f78e116c KM |
437 | skipfile() |
438 | { | |
439 | extern int null(); | |
440 | ||
441 | curfile.action = SKIP; | |
442 | getfile(null, null); | |
443 | } | |
444 | ||
445 | /* | |
446 | * Do the file extraction, calling the supplied functions | |
447 | * with the blocks | |
448 | */ | |
449 | getfile(f1, f2) | |
450 | int (*f2)(), (*f1)(); | |
451 | { | |
452 | register int i; | |
453 | int curblk = 0; | |
454 | off_t size = spcl.c_dinode.di_size; | |
455 | static char clearedbuf[MAXBSIZE]; | |
456 | char buf[MAXBSIZE / TP_BSIZE][TP_BSIZE]; | |
457 | ||
2cb5dabb | 458 | if (checktype(&spcl, TS_END) == GOOD) |
f78e116c | 459 | panic("ran off end of tape\n"); |
e108d3a2 | 460 | if (ishead(&spcl) == FAIL) |
f78e116c | 461 | panic("not at beginning of a file\n"); |
e108d3a2 | 462 | if (!gettingfile && setjmp(restart) != 0) |
f78e116c KM |
463 | return; |
464 | gettingfile++; | |
465 | loop: | |
466 | for (i = 0; i < spcl.c_count; i++) { | |
467 | if (spcl.c_addr[i]) { | |
468 | readtape(&buf[curblk++][0]); | |
469 | if (curblk == fssize / TP_BSIZE) { | |
470 | (*f1)(buf, size > TP_BSIZE ? | |
471 | (long) (fssize) : | |
472 | (curblk - 1) * TP_BSIZE + size); | |
473 | curblk = 0; | |
474 | } | |
475 | } else { | |
476 | if (curblk > 0) { | |
477 | (*f1)(buf, size > TP_BSIZE ? | |
478 | (long) (curblk * TP_BSIZE) : | |
479 | (curblk - 1) * TP_BSIZE + size); | |
480 | curblk = 0; | |
481 | } | |
482 | (*f2)(clearedbuf, size > TP_BSIZE ? | |
483 | (long) TP_BSIZE : size); | |
484 | } | |
9f13f26d KM |
485 | if ((size -= TP_BSIZE) <= 0) |
486 | break; | |
f78e116c | 487 | } |
5c5f44c7 | 488 | if (readhdr(&spcl) == GOOD && size > 0) { |
9f13f26d KM |
489 | if (checktype(&spcl, TS_ADDR) == GOOD) |
490 | goto loop; | |
768eb687 | 491 | dprintf(stdout, "Missing address (header) block for %s\n", |
f78e116c | 492 | curfile.name); |
f78e116c | 493 | } |
9f13f26d | 494 | if (curblk > 0) |
f78e116c | 495 | (*f1)(buf, (curblk * TP_BSIZE) + size); |
f78e116c KM |
496 | findinode(&spcl, 1); |
497 | gettingfile = 0; | |
498 | } | |
499 | ||
500 | /* | |
501 | * The next routines are called during file extraction to | |
502 | * put the data into the right form and place. | |
503 | */ | |
504 | xtrfile(buf, size) | |
505 | char *buf; | |
506 | long size; | |
507 | { | |
508 | ||
509 | if (write(ofile, buf, (int) size) == -1) { | |
510 | fprintf(stderr, "write error extracting inode %d, name %s\n", | |
511 | curfile.ino, curfile.name); | |
512 | perror("write"); | |
513 | done(1); | |
514 | } | |
515 | } | |
516 | ||
517 | xtrskip(buf, size) | |
518 | char *buf; | |
519 | long size; | |
520 | { | |
521 | ||
522 | #ifdef lint | |
523 | buf = buf; | |
524 | #endif | |
525 | if (lseek(ofile, size, 1) == (long)-1) { | |
526 | fprintf(stderr, "seek error extracting inode %d, name %s\n", | |
527 | curfile.ino, curfile.name); | |
528 | perror("lseek"); | |
529 | done(1); | |
530 | } | |
531 | } | |
532 | ||
533 | xtrlnkfile(buf, size) | |
534 | char *buf; | |
535 | long size; | |
536 | { | |
537 | ||
538 | pathlen += size; | |
539 | if (pathlen > MAXPATHLEN) { | |
540 | fprintf(stderr, "symbolic link name: %s->%s%s; too long %d\n", | |
541 | curfile.name, lnkbuf, buf, pathlen); | |
542 | done(1); | |
543 | } | |
538cb7bb | 544 | (void) strcat(lnkbuf, buf); |
f78e116c KM |
545 | } |
546 | ||
547 | xtrlnkskip(buf, size) | |
548 | char *buf; | |
549 | long size; | |
550 | { | |
551 | ||
552 | #ifdef lint | |
553 | buf = buf, size = size; | |
554 | #endif | |
555 | fprintf(stderr, "unallocated block in symbolic link %s\n", | |
556 | curfile.name); | |
557 | done(1); | |
558 | } | |
559 | ||
560 | xtrmap(buf, size) | |
561 | char *buf; | |
562 | long size; | |
563 | { | |
564 | ||
565 | bcopy(buf, map, size); | |
cf6db0ab | 566 | map += size; |
f78e116c KM |
567 | } |
568 | ||
569 | xtrmapskip(buf, size) | |
570 | char *buf; | |
571 | long size; | |
572 | { | |
573 | ||
574 | #ifdef lint | |
575 | buf = buf; | |
f78e116c KM |
576 | #endif |
577 | panic("hole in map\n"); | |
cf6db0ab | 578 | map += size; |
f78e116c KM |
579 | } |
580 | ||
581 | null() {;} | |
582 | ||
583 | /* | |
584 | * Do the tape i/o, dealing with volume changes | |
585 | * etc.. | |
586 | */ | |
587 | readtape(b) | |
588 | char *b; | |
589 | { | |
590 | register long i; | |
7851e15d KM |
591 | long rd, newvol; |
592 | int cnt; | |
f78e116c | 593 | |
b97e998a KM |
594 | if (bct < ntrec) { |
595 | bcopy(&tbf[(bct++*TP_BSIZE)], b, (long)TP_BSIZE); | |
596 | blksread++; | |
597 | return; | |
598 | } | |
599 | for (i = 0; i < ntrec; i++) | |
600 | ((struct s_spcl *)&tbf[i*TP_BSIZE])->c_magic = 0; | |
601 | bct = 0; | |
602 | cnt = ntrec*TP_BSIZE; | |
603 | rd = 0; | |
604 | getmore: | |
e9e7ecc4 | 605 | #ifdef RRESTORE |
b97e998a | 606 | i = rmtread(&tbf[rd], cnt); |
f78e116c | 607 | #else |
b97e998a | 608 | i = read(mt, &tbf[rd], cnt); |
f78e116c | 609 | #endif |
b97e998a KM |
610 | if (i > 0 && i != ntrec*TP_BSIZE) { |
611 | if (pipein) { | |
74025ab9 KM |
612 | rd += i; |
613 | cnt -= i; | |
614 | if (cnt > 0) | |
615 | goto getmore; | |
616 | i = rd; | |
b97e998a KM |
617 | } else { |
618 | if (i % TP_BSIZE != 0) | |
619 | panic("partial block read: %d should be %d\n", | |
620 | i, ntrec * TP_BSIZE); | |
621 | bcopy((char *)&endoftapemark, &tbf[i], | |
622 | (long)TP_BSIZE); | |
74025ab9 | 623 | } |
b97e998a KM |
624 | } |
625 | if (i < 0) { | |
626 | fprintf(stderr, "Tape read error while "); | |
627 | switch (curfile.action) { | |
628 | default: | |
629 | fprintf(stderr, "trying to set up tape\n"); | |
630 | break; | |
631 | case UNKNOWN: | |
632 | fprintf(stderr, "trying to resyncronize\n"); | |
633 | break; | |
634 | case USING: | |
635 | fprintf(stderr, "restoring %s\n", curfile.name); | |
636 | break; | |
637 | case SKIP: | |
638 | fprintf(stderr, "skipping over inode %d\n", | |
639 | curfile.ino); | |
640 | break; | |
641 | } | |
642 | if (!yflag && !reply("continue")) | |
643 | done(1); | |
644 | i = ntrec*TP_BSIZE; | |
645 | bzero(tbf, i); | |
e9e7ecc4 | 646 | #ifdef RRESTORE |
b97e998a | 647 | if (rmtseek(i, 1) < 0) |
f78e116c | 648 | #else |
b97e998a | 649 | if (lseek(mt, i, 1) == (long)-1) |
f78e116c | 650 | #endif |
b97e998a KM |
651 | { |
652 | perror("continuation failed"); | |
653 | done(1); | |
f78e116c | 654 | } |
b97e998a KM |
655 | } |
656 | if (i == 0) { | |
ad073f89 KM |
657 | if (!pipein) { |
658 | newvol = volno + 1; | |
659 | volno = 0; | |
660 | getvol(newvol); | |
661 | readtape(b); | |
f78e116c KM |
662 | return; |
663 | } | |
ad073f89 KM |
664 | if (rd % TP_BSIZE != 0) |
665 | panic("partial block read: %d should be %d\n", | |
666 | rd, ntrec * TP_BSIZE); | |
667 | bcopy((char *)&endoftapemark, &tbf[rd], (long)TP_BSIZE); | |
f78e116c KM |
668 | } |
669 | bcopy(&tbf[(bct++*TP_BSIZE)], b, (long)TP_BSIZE); | |
2cb5dabb | 670 | blksread++; |
f78e116c KM |
671 | } |
672 | ||
b97e998a KM |
673 | findtapeblksize() |
674 | { | |
675 | register long i; | |
676 | ||
677 | for (i = 0; i < ntrec; i++) | |
678 | ((struct s_spcl *)&tbf[i * TP_BSIZE])->c_magic = 0; | |
679 | bct = 0; | |
680 | #ifdef RRESTORE | |
681 | i = rmtread(tbf, ntrec * TP_BSIZE); | |
682 | #else | |
683 | i = read(mt, tbf, ntrec * TP_BSIZE); | |
684 | #endif | |
685 | if (i <= 0) { | |
686 | perror("Tape read error"); | |
687 | done(1); | |
688 | } | |
689 | if (i % TP_BSIZE != 0) { | |
690 | fprintf(stderr, "Tape block size (%d) %s (%d)\n", | |
691 | i, "is not a multiple of dump block size", TP_BSIZE); | |
692 | done(1); | |
693 | } | |
694 | ntrec = i / TP_BSIZE; | |
695 | vprintf(stdout, "Tape block size is %d\n", ntrec); | |
696 | } | |
697 | ||
f78e116c KM |
698 | flsht() |
699 | { | |
700 | ||
19230a53 | 701 | bct = ntrec+1; |
f78e116c KM |
702 | } |
703 | ||
f78e116c KM |
704 | closemt() |
705 | { | |
706 | if (mt < 0) | |
707 | return; | |
e9e7ecc4 | 708 | #ifdef RRESTORE |
f78e116c KM |
709 | rmtclose(); |
710 | #else | |
768eb687 | 711 | (void) close(mt); |
f78e116c KM |
712 | #endif |
713 | } | |
714 | ||
715 | checkvol(b, t) | |
716 | struct s_spcl *b; | |
717 | long t; | |
718 | { | |
719 | ||
2cb5dabb KM |
720 | if (b->c_volume != t) |
721 | return(FAIL); | |
722 | return(GOOD); | |
f78e116c KM |
723 | } |
724 | ||
725 | readhdr(b) | |
726 | struct s_spcl *b; | |
727 | { | |
728 | ||
5c5f44c7 | 729 | if (gethead(b) == FAIL) { |
768eb687 | 730 | dprintf(stdout, "readhdr fails at %d blocks\n", blksread); |
2cb5dabb | 731 | return(FAIL); |
5c5f44c7 | 732 | } |
2cb5dabb | 733 | return(GOOD); |
f78e116c KM |
734 | } |
735 | ||
736 | /* | |
737 | * read the tape into buf, then return whether or | |
738 | * or not it is a header block. | |
739 | */ | |
740 | gethead(buf) | |
741 | struct s_spcl *buf; | |
742 | { | |
5c5f44c7 | 743 | long i; |
f78e116c KM |
744 | union u_ospcl { |
745 | char dummy[TP_BSIZE]; | |
746 | struct s_ospcl { | |
2cb5dabb KM |
747 | long c_type; |
748 | long c_date; | |
749 | long c_ddate; | |
750 | long c_volume; | |
751 | long c_tapea; | |
cf6db0ab | 752 | u_short c_inumber; |
2cb5dabb KM |
753 | long c_magic; |
754 | long c_checksum; | |
f78e116c KM |
755 | struct odinode { |
756 | unsigned short odi_mode; | |
cf6db0ab KM |
757 | u_short odi_nlink; |
758 | u_short odi_uid; | |
759 | u_short odi_gid; | |
2cb5dabb KM |
760 | long odi_size; |
761 | long odi_rdev; | |
f78e116c | 762 | char odi_addr[36]; |
2cb5dabb KM |
763 | long odi_atime; |
764 | long odi_mtime; | |
765 | long odi_ctime; | |
f78e116c | 766 | } c_dinode; |
2cb5dabb KM |
767 | long c_count; |
768 | char c_addr[256]; | |
f78e116c KM |
769 | } s_ospcl; |
770 | } u_ospcl; | |
771 | ||
772 | if (!cvtflag) { | |
773 | readtape((char *)buf); | |
5c5f44c7 | 774 | if (buf->c_magic != NFS_MAGIC || checksum((int *)buf) == FAIL) |
2cb5dabb | 775 | return(FAIL); |
5c5f44c7 | 776 | goto good; |
f78e116c KM |
777 | } |
778 | readtape((char *)(&u_ospcl.s_ospcl)); | |
779 | bzero((char *)buf, (long)TP_BSIZE); | |
780 | buf->c_type = u_ospcl.s_ospcl.c_type; | |
781 | buf->c_date = u_ospcl.s_ospcl.c_date; | |
782 | buf->c_ddate = u_ospcl.s_ospcl.c_ddate; | |
783 | buf->c_volume = u_ospcl.s_ospcl.c_volume; | |
784 | buf->c_tapea = u_ospcl.s_ospcl.c_tapea; | |
785 | buf->c_inumber = u_ospcl.s_ospcl.c_inumber; | |
786 | buf->c_checksum = u_ospcl.s_ospcl.c_checksum; | |
787 | buf->c_magic = u_ospcl.s_ospcl.c_magic; | |
788 | buf->c_dinode.di_mode = u_ospcl.s_ospcl.c_dinode.odi_mode; | |
789 | buf->c_dinode.di_nlink = u_ospcl.s_ospcl.c_dinode.odi_nlink; | |
790 | buf->c_dinode.di_uid = u_ospcl.s_ospcl.c_dinode.odi_uid; | |
791 | buf->c_dinode.di_gid = u_ospcl.s_ospcl.c_dinode.odi_gid; | |
792 | buf->c_dinode.di_size = u_ospcl.s_ospcl.c_dinode.odi_size; | |
793 | buf->c_dinode.di_rdev = u_ospcl.s_ospcl.c_dinode.odi_rdev; | |
794 | buf->c_dinode.di_atime = u_ospcl.s_ospcl.c_dinode.odi_atime; | |
795 | buf->c_dinode.di_mtime = u_ospcl.s_ospcl.c_dinode.odi_mtime; | |
796 | buf->c_dinode.di_ctime = u_ospcl.s_ospcl.c_dinode.odi_ctime; | |
797 | buf->c_count = u_ospcl.s_ospcl.c_count; | |
2cb5dabb | 798 | bcopy(u_ospcl.s_ospcl.c_addr, buf->c_addr, (long)256); |
f78e116c | 799 | if (u_ospcl.s_ospcl.c_magic != OFS_MAGIC || |
5c5f44c7 | 800 | checksum((int *)(&u_ospcl.s_ospcl)) == FAIL) |
2cb5dabb | 801 | return(FAIL); |
f78e116c | 802 | buf->c_magic = NFS_MAGIC; |
5c5f44c7 KM |
803 | |
804 | good: | |
805 | switch (buf->c_type) { | |
806 | ||
807 | case TS_CLRI: | |
808 | case TS_BITS: | |
809 | /* | |
810 | * Have to patch up missing information in bit map headers | |
811 | */ | |
812 | buf->c_inumber = 0; | |
813 | buf->c_dinode.di_size = buf->c_count * TP_BSIZE; | |
814 | for (i = 0; i < buf->c_count; i++) | |
815 | buf->c_addr[i]++; | |
816 | break; | |
817 | ||
818 | case TS_TAPE: | |
819 | case TS_END: | |
820 | buf->c_inumber = 0; | |
821 | break; | |
822 | ||
823 | case TS_INODE: | |
824 | case TS_ADDR: | |
825 | break; | |
826 | ||
827 | default: | |
828 | panic("gethead: unknown inode type %d\n", buf->c_type); | |
829 | break; | |
830 | } | |
2cb5dabb KM |
831 | if (dflag) |
832 | accthdr(buf); | |
833 | return(GOOD); | |
834 | } | |
835 | ||
836 | /* | |
837 | * Check that a header is where it belongs and predict the next header | |
838 | */ | |
839 | accthdr(header) | |
840 | struct s_spcl *header; | |
841 | { | |
7851e15d | 842 | static ino_t previno = 0x7fffffff; |
2cb5dabb KM |
843 | static int prevtype; |
844 | static long predict; | |
845 | long blks, i; | |
846 | ||
5c5f44c7 KM |
847 | if (header->c_type == TS_TAPE) { |
848 | fprintf(stderr, "Volume header\n"); | |
849 | return; | |
850 | } | |
7851e15d | 851 | if (previno == 0x7fffffff) |
2cb5dabb KM |
852 | goto newcalc; |
853 | switch (prevtype) { | |
2cb5dabb | 854 | case TS_BITS: |
5c5f44c7 | 855 | fprintf(stderr, "Dump mask header"); |
2cb5dabb KM |
856 | break; |
857 | case TS_CLRI: | |
5c5f44c7 | 858 | fprintf(stderr, "Remove mask header"); |
2cb5dabb KM |
859 | break; |
860 | case TS_INODE: | |
5c5f44c7 | 861 | fprintf(stderr, "File header, ino %d", previno); |
2cb5dabb KM |
862 | break; |
863 | case TS_ADDR: | |
5c5f44c7 | 864 | fprintf(stderr, "File continuation header, ino %d", previno); |
2cb5dabb KM |
865 | break; |
866 | case TS_END: | |
5c5f44c7 | 867 | fprintf(stderr, "End of tape header"); |
2cb5dabb KM |
868 | break; |
869 | } | |
2cb5dabb KM |
870 | if (predict != blksread - 1) |
871 | fprintf(stderr, "; predicted %d blocks, got %d blocks", | |
872 | predict, blksread - 1); | |
873 | fprintf(stderr, "\n"); | |
874 | newcalc: | |
875 | blks = 0; | |
5c5f44c7 | 876 | if (header->c_type != TS_END) |
2cb5dabb KM |
877 | for (i = 0; i < header->c_count; i++) |
878 | if (header->c_addr[i] != 0) | |
879 | blks++; | |
880 | predict = blks; | |
881 | blksread = 0; | |
882 | prevtype = header->c_type; | |
883 | previno = header->c_inumber; | |
f78e116c KM |
884 | } |
885 | ||
886 | /* | |
887 | * Find an inode header. | |
888 | * Complain if had to skip, and complain is set. | |
889 | */ | |
890 | findinode(header, complain) | |
891 | struct s_spcl *header; | |
892 | int complain; | |
893 | { | |
2cb5dabb | 894 | static long skipcnt = 0; |
f78e116c KM |
895 | |
896 | curfile.name = "<name unknown>"; | |
897 | curfile.action = UNKNOWN; | |
898 | curfile.dip = (struct dinode *)NIL; | |
899 | curfile.ino = 0; | |
2cb5dabb KM |
900 | if (ishead(header) == FAIL) { |
901 | skipcnt++; | |
902 | while (gethead(header) == FAIL) | |
f78e116c | 903 | skipcnt++; |
2cb5dabb | 904 | } |
f78e116c | 905 | for (;;) { |
2cb5dabb | 906 | if (checktype(header, TS_INODE) == GOOD) { |
f78e116c KM |
907 | curfile.dip = &header->c_dinode; |
908 | curfile.ino = header->c_inumber; | |
909 | break; | |
910 | } | |
2cb5dabb | 911 | if (checktype(header, TS_END) == GOOD) { |
f78e116c KM |
912 | curfile.ino = maxino; |
913 | break; | |
914 | } | |
2cb5dabb | 915 | if (checktype(header, TS_CLRI) == GOOD) { |
f78e116c | 916 | curfile.name = "<file removal list>"; |
e108d3a2 | 917 | break; |
f78e116c | 918 | } |
2cb5dabb | 919 | if (checktype(header, TS_BITS) == GOOD) { |
f78e116c | 920 | curfile.name = "<file dump list>"; |
e108d3a2 | 921 | break; |
f78e116c | 922 | } |
2cb5dabb | 923 | while (gethead(header) == FAIL) |
f78e116c KM |
924 | skipcnt++; |
925 | } | |
926 | if (skipcnt > 0 && complain) | |
dd1900f1 | 927 | fprintf(stderr, "resync restore, skipped %d blocks\n", skipcnt); |
f78e116c KM |
928 | skipcnt = 0; |
929 | } | |
930 | ||
931 | /* | |
932 | * return whether or not the buffer contains a header block | |
933 | */ | |
934 | ishead(buf) | |
935 | struct s_spcl *buf; | |
936 | { | |
937 | ||
938 | if (buf->c_magic != NFS_MAGIC) | |
2cb5dabb KM |
939 | return(FAIL); |
940 | return(GOOD); | |
f78e116c KM |
941 | } |
942 | ||
943 | checktype(b, t) | |
944 | struct s_spcl *b; | |
945 | int t; | |
946 | { | |
947 | ||
2cb5dabb KM |
948 | if (b->c_type != t) |
949 | return(FAIL); | |
950 | return(GOOD); | |
f78e116c KM |
951 | } |
952 | ||
953 | checksum(b) | |
954 | register int *b; | |
955 | { | |
956 | register int i, j; | |
957 | ||
958 | j = sizeof(union u_spcl) / sizeof(int); | |
959 | i = 0; | |
960 | do | |
961 | i += *b++; | |
962 | while (--j); | |
963 | if (i != CHECKSUM) { | |
964 | fprintf(stderr, "Checksum error %o, inode %d file %s\n", i, | |
965 | curfile.ino, curfile.name); | |
2cb5dabb | 966 | return(FAIL); |
f78e116c | 967 | } |
2cb5dabb | 968 | return(GOOD); |
f78e116c KM |
969 | } |
970 | ||
e9e7ecc4 | 971 | #ifdef RRESTORE |
74025ab9 | 972 | /* VARARGS1 */ |
f78e116c KM |
973 | msg(cp, a1, a2, a3) |
974 | char *cp; | |
975 | { | |
976 | ||
977 | fprintf(stderr, cp, a1, a2, a3); | |
978 | } | |
e9e7ecc4 | 979 | #endif RRESTORE |