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 |
414c4f09 | 8 | static char sccsid[] = "@(#)tape.c 5.14 (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 | 113 | struct stat stbuf; |
f78e116c KM |
114 | extern int xtrmap(), xtrmapskip(); |
115 | ||
116 | vprintf(stdout, "Verify tape and initialize maps\n"); | |
e9e7ecc4 | 117 | #ifdef RRESTORE |
f78e116c KM |
118 | if ((mt = rmtopen(magtape, 0)) < 0) |
119 | #else | |
2cb5dabb KM |
120 | if (pipein) |
121 | mt = 0; | |
122 | else if ((mt = open(magtape, 0)) < 0) | |
f78e116c KM |
123 | #endif |
124 | { | |
e9e7ecc4 | 125 | perror(magtape); |
f78e116c KM |
126 | done(1); |
127 | } | |
768eb687 KM |
128 | volno = 1; |
129 | setdumpnum(); | |
f78e116c | 130 | flsht(); |
b97e998a KM |
131 | if (!pipein && !bflag) |
132 | findtapeblksize(); | |
5c5f44c7 | 133 | if (gethead(&spcl) == FAIL) { |
f78e116c KM |
134 | bct--; /* push back this block */ |
135 | cvtflag++; | |
5c5f44c7 | 136 | if (gethead(&spcl) == FAIL) { |
f78e116c KM |
137 | fprintf(stderr, "Tape is not a dump tape\n"); |
138 | done(1); | |
139 | } | |
140 | fprintf(stderr, "Converting to new file system format.\n"); | |
141 | } | |
2cb5dabb KM |
142 | if (pipein) { |
143 | endoftapemark.s_spcl.c_magic = cvtflag ? OFS_MAGIC : NFS_MAGIC; | |
144 | endoftapemark.s_spcl.c_type = TS_END; | |
145 | ip = (int *)&endoftapemark; | |
146 | j = sizeof(union u_spcl) / sizeof(int); | |
147 | i = 0; | |
148 | do | |
149 | i += *ip++; | |
150 | while (--j); | |
151 | endoftapemark.s_spcl.c_checksum = CHECKSUM - i; | |
152 | } | |
b32320ae KM |
153 | if (vflag || command == 't') |
154 | printdumpinfo(); | |
f78e116c | 155 | dumptime = spcl.c_ddate; |
2cb5dabb | 156 | dumpdate = spcl.c_date; |
f78e116c | 157 | if (stat(".", &stbuf) < 0) { |
e9e7ecc4 | 158 | perror("cannot stat ."); |
f78e116c KM |
159 | done(1); |
160 | } | |
bdeceadb KM |
161 | if (stbuf.st_blksize > 0 && stbuf.st_blksize <= MAXBSIZE) |
162 | fssize = stbuf.st_blksize; | |
163 | if (((fssize - 1) & fssize) != 0) { | |
f78e116c KM |
164 | fprintf(stderr, "bad block size %d\n", fssize); |
165 | done(1); | |
166 | } | |
2cb5dabb | 167 | if (checkvol(&spcl, (long)1) == FAIL) { |
f78e116c KM |
168 | fprintf(stderr, "Tape is not volume 1 of the dump\n"); |
169 | done(1); | |
170 | } | |
2cb5dabb KM |
171 | if (readhdr(&spcl) == FAIL) |
172 | panic("no header after volume mark!\n"); | |
b32320ae | 173 | findinode(&spcl); |
2cb5dabb | 174 | if (checktype(&spcl, TS_CLRI) == FAIL) { |
f78e116c KM |
175 | fprintf(stderr, "Cannot find file removal list\n"); |
176 | done(1); | |
177 | } | |
2cb5dabb | 178 | maxino = (spcl.c_count * TP_BSIZE * NBBY) + 1; |
768eb687 | 179 | dprintf(stdout, "maxino = %d\n", maxino); |
7851e15d | 180 | map = calloc((unsigned)1, (unsigned)howmany(maxino, NBBY)); |
f78e116c KM |
181 | if (map == (char *)NIL) |
182 | panic("no memory for file removal list\n"); | |
cf6db0ab | 183 | clrimap = map; |
f78e116c KM |
184 | curfile.action = USING; |
185 | getfile(xtrmap, xtrmapskip); | |
2cb5dabb | 186 | if (checktype(&spcl, TS_BITS) == FAIL) { |
f78e116c KM |
187 | fprintf(stderr, "Cannot find file dump list\n"); |
188 | done(1); | |
189 | } | |
7851e15d | 190 | map = calloc((unsigned)1, (unsigned)howmany(maxino, NBBY)); |
f78e116c KM |
191 | if (map == (char *)NULL) |
192 | panic("no memory for file dump list\n"); | |
cf6db0ab | 193 | dumpmap = map; |
f78e116c KM |
194 | curfile.action = USING; |
195 | getfile(xtrmap, xtrmapskip); | |
f78e116c KM |
196 | } |
197 | ||
170639fd KM |
198 | /* |
199 | * Prompt user to load a new dump volume. | |
200 | * "Nextvol" is the next suggested volume to use. | |
201 | * This suggested volume is enforced when doing full | |
202 | * or incremental restores, but can be overrridden by | |
203 | * the user when only extracting a subset of the files. | |
204 | */ | |
f78e116c KM |
205 | getvol(nextvol) |
206 | long nextvol; | |
207 | { | |
208 | long newvol; | |
170639fd | 209 | long savecnt, i; |
f78e116c KM |
210 | union u_spcl tmpspcl; |
211 | # define tmpbuf tmpspcl.s_spcl | |
b32320ae | 212 | char buf[TP_BSIZE]; |
cb2a63da | 213 | extern char *ctime(); |
f78e116c | 214 | |
a162cc0b | 215 | if (nextvol == 1) { |
170639fd | 216 | tapesread = 0; |
a162cc0b KM |
217 | gettingfile = 0; |
218 | } | |
2cb5dabb | 219 | if (pipein) { |
e108d3a2 | 220 | if (nextvol != 1) |
2cb5dabb | 221 | panic("Changing volumes on pipe input?\n"); |
e108d3a2 KM |
222 | if (volno == 1) |
223 | return; | |
224 | goto gethdr; | |
2cb5dabb KM |
225 | } |
226 | savecnt = blksread; | |
f78e116c | 227 | again: |
e108d3a2 KM |
228 | if (pipein) |
229 | done(1); /* pipes do not get a second chance */ | |
f78e116c KM |
230 | if (command == 'R' || command == 'r' || curfile.action != SKIP) |
231 | newvol = nextvol; | |
232 | else | |
233 | newvol = 0; | |
234 | while (newvol <= 0) { | |
170639fd KM |
235 | if (tapesread == 0) { |
236 | fprintf(stderr, "%s%s%s%s%s", | |
237 | "You have not read any tapes yet.\n", | |
238 | "Unless you know which volume your", | |
239 | " file(s) are on you should start\n", | |
240 | "with the last volume and work", | |
b4c41341 | 241 | " towards towards the first.\n"); |
170639fd KM |
242 | } else { |
243 | fprintf(stderr, "You have read volumes"); | |
244 | strcpy(tbf, ": "); | |
245 | for (i = 1; i < 32; i++) | |
246 | if (tapesread & (1 << i)) { | |
247 | fprintf(stderr, "%s%d", tbf, i); | |
248 | strcpy(tbf, ", "); | |
249 | } | |
250 | fprintf(stderr, "\n"); | |
251 | } | |
538cb7bb | 252 | do { |
b677c5d7 KM |
253 | fprintf(stderr, "Specify next volume #: "); |
254 | (void) fflush(stderr); | |
255 | (void) fgets(tbf, BUFSIZ, terminal); | |
256 | } while (!feof(terminal) && tbf[0] == '\n'); | |
257 | if (feof(terminal)) | |
538cb7bb | 258 | done(1); |
f78e116c KM |
259 | newvol = atoi(tbf); |
260 | if (newvol <= 0) { | |
261 | fprintf(stderr, | |
262 | "Volume numbers are positive numerics\n"); | |
263 | } | |
264 | } | |
170639fd KM |
265 | if (newvol == volno) { |
266 | tapesread |= 1 << volno; | |
f78e116c | 267 | return; |
170639fd | 268 | } |
f78e116c | 269 | closemt(); |
7eb08dfe KM |
270 | fprintf(stderr, "Mount tape volume %d\n", newvol); |
271 | fprintf(stderr, "then enter tape name (default: %s) ", magtape); | |
b677c5d7 | 272 | (void) fflush(stderr); |
7eb08dfe KM |
273 | (void) fgets(tbf, BUFSIZ, terminal); |
274 | if (feof(terminal)) | |
275 | done(1); | |
276 | if (tbf[0] != '\n') { | |
277 | (void) strcpy(magtape, tbf); | |
278 | magtape[strlen(magtape) - 1] = '\0'; | |
279 | } | |
e9e7ecc4 | 280 | #ifdef RRESTORE |
f78e116c KM |
281 | if ((mt = rmtopen(magtape, 0)) == -1) |
282 | #else | |
283 | if ((mt = open(magtape, 0)) == -1) | |
284 | #endif | |
285 | { | |
7eb08dfe KM |
286 | fprintf(stderr, "Cannot open %s\n", magtape); |
287 | volno = -1; | |
f78e116c KM |
288 | goto again; |
289 | } | |
e108d3a2 | 290 | gethdr: |
f78e116c | 291 | volno = newvol; |
768eb687 | 292 | setdumpnum(); |
f78e116c | 293 | flsht(); |
2cb5dabb | 294 | if (readhdr(&tmpbuf) == FAIL) { |
f78e116c KM |
295 | fprintf(stderr, "tape is not dump tape\n"); |
296 | volno = 0; | |
297 | goto again; | |
298 | } | |
2cb5dabb | 299 | if (checkvol(&tmpbuf, volno) == FAIL) { |
f78e116c KM |
300 | fprintf(stderr, "Wrong volume (%d)\n", tmpbuf.c_volume); |
301 | volno = 0; | |
302 | goto again; | |
303 | } | |
2cb5dabb | 304 | if (tmpbuf.c_date != dumpdate || tmpbuf.c_ddate != dumptime) { |
3dbddecd KM |
305 | fprintf(stderr, "Wrong dump date\n\tgot: %s", |
306 | ctime(&tmpbuf.c_date)); | |
307 | fprintf(stderr, "\twanted: %s", ctime(&dumpdate)); | |
2cb5dabb KM |
308 | volno = 0; |
309 | goto again; | |
310 | } | |
170639fd | 311 | tapesread |= 1 << volno; |
5c5f44c7 | 312 | blksread = savecnt; |
f78e116c KM |
313 | if (curfile.action == USING) { |
314 | if (volno == 1) | |
315 | panic("active file into volume 1\n"); | |
316 | return; | |
317 | } | |
b32320ae KM |
318 | /* |
319 | * Skip up to the beginning of the next record | |
320 | */ | |
8d412b7c | 321 | if (tmpbuf.c_type == TS_TAPE && (tmpbuf.c_flags & DR_NEWHEADER)) |
b32320ae KM |
322 | for (i = tmpbuf.c_count; i > 0; i--) |
323 | readtape(buf); | |
5c5f44c7 | 324 | (void) gethead(&spcl); |
b32320ae | 325 | findinode(&spcl); |
f78e116c KM |
326 | if (gettingfile) { |
327 | gettingfile = 0; | |
328 | longjmp(restart, 1); | |
329 | } | |
330 | } | |
331 | ||
768eb687 KM |
332 | /* |
333 | * handle multiple dumps per tape by skipping forward to the | |
334 | * appropriate one. | |
335 | */ | |
336 | setdumpnum() | |
337 | { | |
338 | struct mtop tcom; | |
339 | ||
340 | if (dumpnum == 1 || volno != 1) | |
341 | return; | |
342 | if (pipein) { | |
343 | fprintf(stderr, "Cannot have multiple dumps on pipe input\n"); | |
344 | done(1); | |
345 | } | |
346 | tcom.mt_op = MTFSF; | |
347 | tcom.mt_count = dumpnum - 1; | |
e9e7ecc4 | 348 | #ifdef RRESTORE |
768eb687 KM |
349 | rmtioctl(MTFSF, dumpnum - 1); |
350 | #else | |
538cb7bb | 351 | if (ioctl(mt, (int)MTIOCTOP, (char *)&tcom) < 0) |
768eb687 KM |
352 | perror("ioctl MTFSF"); |
353 | #endif | |
354 | } | |
355 | ||
b32320ae KM |
356 | printdumpinfo() |
357 | { | |
cb2a63da | 358 | extern char *ctime(); |
b32320ae KM |
359 | |
360 | fprintf(stdout, "Dump date: %s", ctime(&spcl.c_date)); | |
f441de4a KM |
361 | fprintf(stdout, "Dumped from: %s", |
362 | (spcl.c_ddate == 0) ? "the epoch\n" : ctime(&spcl.c_ddate)); | |
b32320ae KM |
363 | if (spcl.c_host[0] == '\0') |
364 | return; | |
365 | fprintf(stderr, "Level %d dump of %s on %s:%s\n", | |
366 | spcl.c_level, spcl.c_filesys, spcl.c_host, spcl.c_dev); | |
367 | fprintf(stderr, "Label: %s\n", spcl.c_label); | |
368 | } | |
369 | ||
f78e116c KM |
370 | extractfile(name) |
371 | char *name; | |
372 | { | |
373 | int mode; | |
374 | time_t timep[2]; | |
375 | struct entry *ep; | |
376 | extern int xtrlnkfile(), xtrlnkskip(); | |
377 | extern int xtrfile(), xtrskip(); | |
378 | ||
379 | curfile.name = name; | |
380 | curfile.action = USING; | |
381 | timep[0] = curfile.dip->di_atime; | |
382 | timep[1] = curfile.dip->di_mtime; | |
383 | mode = curfile.dip->di_mode; | |
384 | switch (mode & IFMT) { | |
385 | ||
386 | default: | |
387 | fprintf(stderr, "%s: unknown file mode 0%o\n", name, mode); | |
388 | skipfile(); | |
389 | return (FAIL); | |
390 | ||
74e940f5 KM |
391 | case IFSOCK: |
392 | vprintf(stdout, "skipped socket %s\n", name); | |
393 | skipfile(); | |
394 | return (GOOD); | |
395 | ||
f78e116c KM |
396 | case IFDIR: |
397 | if (mflag) { | |
398 | ep = lookupname(name); | |
399 | if (ep == NIL || ep->e_flags & EXTRACT) | |
400 | panic("unextracted directory %s\n", name); | |
401 | skipfile(); | |
402 | return (GOOD); | |
403 | } | |
404 | vprintf(stdout, "extract file %s\n", name); | |
405 | return (genliteraldir(name, curfile.ino)); | |
406 | ||
407 | case IFLNK: | |
408 | lnkbuf[0] = '\0'; | |
409 | pathlen = 0; | |
410 | getfile(xtrlnkfile, xtrlnkskip); | |
411 | if (pathlen == 0) { | |
412 | vprintf(stdout, | |
413 | "%s: zero length symbolic link (ignored)\n", name); | |
bdeceadb KM |
414 | return (GOOD); |
415 | } | |
416 | return (linkit(lnkbuf, name, SYMLINK)); | |
f78e116c KM |
417 | |
418 | case IFCHR: | |
419 | case IFBLK: | |
420 | vprintf(stdout, "extract special file %s\n", name); | |
414c4f09 KM |
421 | if (Nflag) { |
422 | skipfile(); | |
423 | return (GOOD); | |
424 | } | |
f78e116c | 425 | if (mknod(name, mode, (int)curfile.dip->di_rdev) < 0) { |
e9e7ecc4 KM |
426 | fprintf(stderr, "%s: ", name); |
427 | (void) fflush(stderr); | |
428 | perror("cannot create special file"); | |
f78e116c KM |
429 | skipfile(); |
430 | return (FAIL); | |
431 | } | |
768eb687 KM |
432 | (void) chown(name, curfile.dip->di_uid, curfile.dip->di_gid); |
433 | (void) chmod(name, mode); | |
f78e116c KM |
434 | skipfile(); |
435 | utime(name, timep); | |
436 | return (GOOD); | |
437 | ||
438 | case IFREG: | |
439 | vprintf(stdout, "extract file %s\n", name); | |
414c4f09 KM |
440 | if (Nflag) { |
441 | skipfile(); | |
442 | return (GOOD); | |
443 | } | |
15aeb519 | 444 | if ((ofile = creat(name, 0666)) < 0) { |
e9e7ecc4 KM |
445 | fprintf(stderr, "%s: ", name); |
446 | (void) fflush(stderr); | |
447 | perror("cannot create file"); | |
f78e116c KM |
448 | skipfile(); |
449 | return (FAIL); | |
450 | } | |
768eb687 KM |
451 | (void) fchown(ofile, curfile.dip->di_uid, curfile.dip->di_gid); |
452 | (void) fchmod(ofile, mode); | |
f78e116c | 453 | getfile(xtrfile, xtrskip); |
768eb687 | 454 | (void) close(ofile); |
f78e116c KM |
455 | utime(name, timep); |
456 | return (GOOD); | |
457 | } | |
458 | /* NOTREACHED */ | |
459 | } | |
460 | ||
e108d3a2 KM |
461 | /* |
462 | * skip over bit maps on the tape | |
463 | */ | |
464 | skipmaps() | |
465 | { | |
466 | ||
467 | while (checktype(&spcl, TS_CLRI) == GOOD || | |
468 | checktype(&spcl, TS_BITS) == GOOD) | |
469 | skipfile(); | |
470 | } | |
471 | ||
472 | /* | |
473 | * skip over a file on the tape | |
474 | */ | |
f78e116c KM |
475 | skipfile() |
476 | { | |
477 | extern int null(); | |
478 | ||
479 | curfile.action = SKIP; | |
480 | getfile(null, null); | |
481 | } | |
482 | ||
483 | /* | |
484 | * Do the file extraction, calling the supplied functions | |
485 | * with the blocks | |
486 | */ | |
487 | getfile(f1, f2) | |
488 | int (*f2)(), (*f1)(); | |
489 | { | |
490 | register int i; | |
491 | int curblk = 0; | |
492 | off_t size = spcl.c_dinode.di_size; | |
493 | static char clearedbuf[MAXBSIZE]; | |
494 | char buf[MAXBSIZE / TP_BSIZE][TP_BSIZE]; | |
4f8ea093 | 495 | char junk[TP_BSIZE]; |
f78e116c | 496 | |
2cb5dabb | 497 | if (checktype(&spcl, TS_END) == GOOD) |
f78e116c | 498 | panic("ran off end of tape\n"); |
e108d3a2 | 499 | if (ishead(&spcl) == FAIL) |
f78e116c | 500 | panic("not at beginning of a file\n"); |
e108d3a2 | 501 | if (!gettingfile && setjmp(restart) != 0) |
f78e116c KM |
502 | return; |
503 | gettingfile++; | |
504 | loop: | |
505 | for (i = 0; i < spcl.c_count; i++) { | |
506 | if (spcl.c_addr[i]) { | |
507 | readtape(&buf[curblk++][0]); | |
508 | if (curblk == fssize / TP_BSIZE) { | |
509 | (*f1)(buf, size > TP_BSIZE ? | |
510 | (long) (fssize) : | |
511 | (curblk - 1) * TP_BSIZE + size); | |
512 | curblk = 0; | |
513 | } | |
514 | } else { | |
515 | if (curblk > 0) { | |
516 | (*f1)(buf, size > TP_BSIZE ? | |
517 | (long) (curblk * TP_BSIZE) : | |
518 | (curblk - 1) * TP_BSIZE + size); | |
519 | curblk = 0; | |
520 | } | |
521 | (*f2)(clearedbuf, size > TP_BSIZE ? | |
522 | (long) TP_BSIZE : size); | |
523 | } | |
4f8ea093 KM |
524 | if ((size -= TP_BSIZE) <= 0) { |
525 | for (i++; i < spcl.c_count; i++) | |
526 | if (spcl.c_addr[i]) | |
527 | readtape(junk); | |
9f13f26d | 528 | break; |
4f8ea093 | 529 | } |
f78e116c | 530 | } |
5c5f44c7 | 531 | if (readhdr(&spcl) == GOOD && size > 0) { |
9f13f26d KM |
532 | if (checktype(&spcl, TS_ADDR) == GOOD) |
533 | goto loop; | |
768eb687 | 534 | dprintf(stdout, "Missing address (header) block for %s\n", |
f78e116c | 535 | curfile.name); |
f78e116c | 536 | } |
9f13f26d | 537 | if (curblk > 0) |
f78e116c | 538 | (*f1)(buf, (curblk * TP_BSIZE) + size); |
b32320ae | 539 | findinode(&spcl); |
f78e116c KM |
540 | gettingfile = 0; |
541 | } | |
542 | ||
543 | /* | |
544 | * The next routines are called during file extraction to | |
545 | * put the data into the right form and place. | |
546 | */ | |
547 | xtrfile(buf, size) | |
548 | char *buf; | |
549 | long size; | |
550 | { | |
551 | ||
414c4f09 KM |
552 | if (Nflag) |
553 | return; | |
f78e116c KM |
554 | if (write(ofile, buf, (int) size) == -1) { |
555 | fprintf(stderr, "write error extracting inode %d, name %s\n", | |
556 | curfile.ino, curfile.name); | |
557 | perror("write"); | |
558 | done(1); | |
559 | } | |
560 | } | |
561 | ||
562 | xtrskip(buf, size) | |
563 | char *buf; | |
564 | long size; | |
565 | { | |
566 | ||
567 | #ifdef lint | |
568 | buf = buf; | |
569 | #endif | |
570 | if (lseek(ofile, size, 1) == (long)-1) { | |
571 | fprintf(stderr, "seek error extracting inode %d, name %s\n", | |
572 | curfile.ino, curfile.name); | |
573 | perror("lseek"); | |
574 | done(1); | |
575 | } | |
576 | } | |
577 | ||
578 | xtrlnkfile(buf, size) | |
579 | char *buf; | |
580 | long size; | |
581 | { | |
582 | ||
583 | pathlen += size; | |
584 | if (pathlen > MAXPATHLEN) { | |
585 | fprintf(stderr, "symbolic link name: %s->%s%s; too long %d\n", | |
586 | curfile.name, lnkbuf, buf, pathlen); | |
587 | done(1); | |
588 | } | |
538cb7bb | 589 | (void) strcat(lnkbuf, buf); |
f78e116c KM |
590 | } |
591 | ||
592 | xtrlnkskip(buf, size) | |
593 | char *buf; | |
594 | long size; | |
595 | { | |
596 | ||
597 | #ifdef lint | |
598 | buf = buf, size = size; | |
599 | #endif | |
600 | fprintf(stderr, "unallocated block in symbolic link %s\n", | |
601 | curfile.name); | |
602 | done(1); | |
603 | } | |
604 | ||
605 | xtrmap(buf, size) | |
606 | char *buf; | |
607 | long size; | |
608 | { | |
609 | ||
610 | bcopy(buf, map, size); | |
cf6db0ab | 611 | map += size; |
f78e116c KM |
612 | } |
613 | ||
614 | xtrmapskip(buf, size) | |
615 | char *buf; | |
616 | long size; | |
617 | { | |
618 | ||
619 | #ifdef lint | |
620 | buf = buf; | |
f78e116c KM |
621 | #endif |
622 | panic("hole in map\n"); | |
cf6db0ab | 623 | map += size; |
f78e116c KM |
624 | } |
625 | ||
626 | null() {;} | |
627 | ||
628 | /* | |
629 | * Do the tape i/o, dealing with volume changes | |
630 | * etc.. | |
631 | */ | |
632 | readtape(b) | |
633 | char *b; | |
634 | { | |
635 | register long i; | |
7851e15d KM |
636 | long rd, newvol; |
637 | int cnt; | |
f78e116c | 638 | |
b97e998a KM |
639 | if (bct < ntrec) { |
640 | bcopy(&tbf[(bct++*TP_BSIZE)], b, (long)TP_BSIZE); | |
641 | blksread++; | |
642 | return; | |
643 | } | |
644 | for (i = 0; i < ntrec; i++) | |
645 | ((struct s_spcl *)&tbf[i*TP_BSIZE])->c_magic = 0; | |
646 | bct = 0; | |
647 | cnt = ntrec*TP_BSIZE; | |
648 | rd = 0; | |
649 | getmore: | |
e9e7ecc4 | 650 | #ifdef RRESTORE |
b97e998a | 651 | i = rmtread(&tbf[rd], cnt); |
f78e116c | 652 | #else |
b97e998a | 653 | i = read(mt, &tbf[rd], cnt); |
f78e116c | 654 | #endif |
b97e998a KM |
655 | if (i > 0 && i != ntrec*TP_BSIZE) { |
656 | if (pipein) { | |
74025ab9 KM |
657 | rd += i; |
658 | cnt -= i; | |
659 | if (cnt > 0) | |
660 | goto getmore; | |
661 | i = rd; | |
b97e998a KM |
662 | } else { |
663 | if (i % TP_BSIZE != 0) | |
664 | panic("partial block read: %d should be %d\n", | |
665 | i, ntrec * TP_BSIZE); | |
666 | bcopy((char *)&endoftapemark, &tbf[i], | |
667 | (long)TP_BSIZE); | |
74025ab9 | 668 | } |
b97e998a KM |
669 | } |
670 | if (i < 0) { | |
671 | fprintf(stderr, "Tape read error while "); | |
672 | switch (curfile.action) { | |
673 | default: | |
674 | fprintf(stderr, "trying to set up tape\n"); | |
675 | break; | |
676 | case UNKNOWN: | |
bf7abb47 | 677 | fprintf(stderr, "trying to resynchronize\n"); |
b97e998a KM |
678 | break; |
679 | case USING: | |
680 | fprintf(stderr, "restoring %s\n", curfile.name); | |
681 | break; | |
682 | case SKIP: | |
683 | fprintf(stderr, "skipping over inode %d\n", | |
684 | curfile.ino); | |
685 | break; | |
686 | } | |
687 | if (!yflag && !reply("continue")) | |
688 | done(1); | |
689 | i = ntrec*TP_BSIZE; | |
690 | bzero(tbf, i); | |
e9e7ecc4 | 691 | #ifdef RRESTORE |
b97e998a | 692 | if (rmtseek(i, 1) < 0) |
f78e116c | 693 | #else |
b97e998a | 694 | if (lseek(mt, i, 1) == (long)-1) |
f78e116c | 695 | #endif |
b97e998a KM |
696 | { |
697 | perror("continuation failed"); | |
698 | done(1); | |
f78e116c | 699 | } |
b97e998a KM |
700 | } |
701 | if (i == 0) { | |
ad073f89 KM |
702 | if (!pipein) { |
703 | newvol = volno + 1; | |
704 | volno = 0; | |
705 | getvol(newvol); | |
706 | readtape(b); | |
f78e116c KM |
707 | return; |
708 | } | |
ad073f89 KM |
709 | if (rd % TP_BSIZE != 0) |
710 | panic("partial block read: %d should be %d\n", | |
711 | rd, ntrec * TP_BSIZE); | |
712 | bcopy((char *)&endoftapemark, &tbf[rd], (long)TP_BSIZE); | |
f78e116c KM |
713 | } |
714 | bcopy(&tbf[(bct++*TP_BSIZE)], b, (long)TP_BSIZE); | |
2cb5dabb | 715 | blksread++; |
f78e116c KM |
716 | } |
717 | ||
b97e998a KM |
718 | findtapeblksize() |
719 | { | |
720 | register long i; | |
721 | ||
722 | for (i = 0; i < ntrec; i++) | |
723 | ((struct s_spcl *)&tbf[i * TP_BSIZE])->c_magic = 0; | |
724 | bct = 0; | |
725 | #ifdef RRESTORE | |
726 | i = rmtread(tbf, ntrec * TP_BSIZE); | |
727 | #else | |
728 | i = read(mt, tbf, ntrec * TP_BSIZE); | |
729 | #endif | |
730 | if (i <= 0) { | |
731 | perror("Tape read error"); | |
732 | done(1); | |
733 | } | |
734 | if (i % TP_BSIZE != 0) { | |
735 | fprintf(stderr, "Tape block size (%d) %s (%d)\n", | |
736 | i, "is not a multiple of dump block size", TP_BSIZE); | |
737 | done(1); | |
738 | } | |
739 | ntrec = i / TP_BSIZE; | |
740 | vprintf(stdout, "Tape block size is %d\n", ntrec); | |
741 | } | |
742 | ||
f78e116c KM |
743 | flsht() |
744 | { | |
745 | ||
19230a53 | 746 | bct = ntrec+1; |
f78e116c KM |
747 | } |
748 | ||
f78e116c KM |
749 | closemt() |
750 | { | |
751 | if (mt < 0) | |
752 | return; | |
e9e7ecc4 | 753 | #ifdef RRESTORE |
f78e116c KM |
754 | rmtclose(); |
755 | #else | |
768eb687 | 756 | (void) close(mt); |
f78e116c KM |
757 | #endif |
758 | } | |
759 | ||
760 | checkvol(b, t) | |
761 | struct s_spcl *b; | |
762 | long t; | |
763 | { | |
764 | ||
2cb5dabb KM |
765 | if (b->c_volume != t) |
766 | return(FAIL); | |
767 | return(GOOD); | |
f78e116c KM |
768 | } |
769 | ||
770 | readhdr(b) | |
771 | struct s_spcl *b; | |
772 | { | |
773 | ||
5c5f44c7 | 774 | if (gethead(b) == FAIL) { |
768eb687 | 775 | dprintf(stdout, "readhdr fails at %d blocks\n", blksread); |
2cb5dabb | 776 | return(FAIL); |
5c5f44c7 | 777 | } |
2cb5dabb | 778 | return(GOOD); |
f78e116c KM |
779 | } |
780 | ||
781 | /* | |
782 | * read the tape into buf, then return whether or | |
783 | * or not it is a header block. | |
784 | */ | |
785 | gethead(buf) | |
786 | struct s_spcl *buf; | |
787 | { | |
b4c41341 | 788 | long i, *j; |
f78e116c KM |
789 | union u_ospcl { |
790 | char dummy[TP_BSIZE]; | |
791 | struct s_ospcl { | |
2cb5dabb KM |
792 | long c_type; |
793 | long c_date; | |
794 | long c_ddate; | |
795 | long c_volume; | |
796 | long c_tapea; | |
cf6db0ab | 797 | u_short c_inumber; |
2cb5dabb KM |
798 | long c_magic; |
799 | long c_checksum; | |
f78e116c KM |
800 | struct odinode { |
801 | unsigned short odi_mode; | |
cf6db0ab KM |
802 | u_short odi_nlink; |
803 | u_short odi_uid; | |
804 | u_short odi_gid; | |
2cb5dabb KM |
805 | long odi_size; |
806 | long odi_rdev; | |
f78e116c | 807 | char odi_addr[36]; |
2cb5dabb KM |
808 | long odi_atime; |
809 | long odi_mtime; | |
810 | long odi_ctime; | |
f78e116c | 811 | } c_dinode; |
2cb5dabb KM |
812 | long c_count; |
813 | char c_addr[256]; | |
f78e116c KM |
814 | } s_ospcl; |
815 | } u_ospcl; | |
816 | ||
817 | if (!cvtflag) { | |
818 | readtape((char *)buf); | |
b4c41341 KS |
819 | if (buf->c_magic != NFS_MAGIC) { |
820 | if (swabl(buf->c_magic) != NFS_MAGIC) | |
821 | return (FAIL); | |
822 | if (!Bcvt) { | |
823 | vprintf(stdout, "Note: Doing Byte swapping\n"); | |
824 | Bcvt = 1; | |
825 | } | |
826 | } | |
827 | if (checksum((int *)buf) == FAIL) | |
828 | return (FAIL); | |
829 | if (Bcvt) | |
830 | swabst("8l4s31l", (char *)buf); | |
5c5f44c7 | 831 | goto good; |
f78e116c KM |
832 | } |
833 | readtape((char *)(&u_ospcl.s_ospcl)); | |
834 | bzero((char *)buf, (long)TP_BSIZE); | |
835 | buf->c_type = u_ospcl.s_ospcl.c_type; | |
836 | buf->c_date = u_ospcl.s_ospcl.c_date; | |
837 | buf->c_ddate = u_ospcl.s_ospcl.c_ddate; | |
838 | buf->c_volume = u_ospcl.s_ospcl.c_volume; | |
839 | buf->c_tapea = u_ospcl.s_ospcl.c_tapea; | |
840 | buf->c_inumber = u_ospcl.s_ospcl.c_inumber; | |
841 | buf->c_checksum = u_ospcl.s_ospcl.c_checksum; | |
842 | buf->c_magic = u_ospcl.s_ospcl.c_magic; | |
843 | buf->c_dinode.di_mode = u_ospcl.s_ospcl.c_dinode.odi_mode; | |
844 | buf->c_dinode.di_nlink = u_ospcl.s_ospcl.c_dinode.odi_nlink; | |
845 | buf->c_dinode.di_uid = u_ospcl.s_ospcl.c_dinode.odi_uid; | |
846 | buf->c_dinode.di_gid = u_ospcl.s_ospcl.c_dinode.odi_gid; | |
847 | buf->c_dinode.di_size = u_ospcl.s_ospcl.c_dinode.odi_size; | |
848 | buf->c_dinode.di_rdev = u_ospcl.s_ospcl.c_dinode.odi_rdev; | |
849 | buf->c_dinode.di_atime = u_ospcl.s_ospcl.c_dinode.odi_atime; | |
850 | buf->c_dinode.di_mtime = u_ospcl.s_ospcl.c_dinode.odi_mtime; | |
851 | buf->c_dinode.di_ctime = u_ospcl.s_ospcl.c_dinode.odi_ctime; | |
852 | buf->c_count = u_ospcl.s_ospcl.c_count; | |
2cb5dabb | 853 | bcopy(u_ospcl.s_ospcl.c_addr, buf->c_addr, (long)256); |
f78e116c | 854 | if (u_ospcl.s_ospcl.c_magic != OFS_MAGIC || |
5c5f44c7 | 855 | checksum((int *)(&u_ospcl.s_ospcl)) == FAIL) |
2cb5dabb | 856 | return(FAIL); |
f78e116c | 857 | buf->c_magic = NFS_MAGIC; |
5c5f44c7 KM |
858 | |
859 | good: | |
b4c41341 KS |
860 | j = buf->c_dinode.di_ic.ic_size.val; |
861 | i = j[1]; | |
862 | if (buf->c_dinode.di_size == 0 && | |
863 | (buf->c_dinode.di_mode & IFMT) == IFDIR && Qcvt==0) { | |
864 | if (*j || i) { | |
865 | printf("Note: Doing Quad swapping\n"); | |
866 | Qcvt = 1; | |
867 | } | |
868 | } | |
869 | if (Qcvt) { | |
870 | j[1] = *j; *j = i; | |
871 | } | |
5c5f44c7 KM |
872 | switch (buf->c_type) { |
873 | ||
874 | case TS_CLRI: | |
875 | case TS_BITS: | |
876 | /* | |
877 | * Have to patch up missing information in bit map headers | |
878 | */ | |
879 | buf->c_inumber = 0; | |
880 | buf->c_dinode.di_size = buf->c_count * TP_BSIZE; | |
881 | for (i = 0; i < buf->c_count; i++) | |
882 | buf->c_addr[i]++; | |
883 | break; | |
884 | ||
885 | case TS_TAPE: | |
886 | case TS_END: | |
887 | buf->c_inumber = 0; | |
888 | break; | |
889 | ||
890 | case TS_INODE: | |
891 | case TS_ADDR: | |
892 | break; | |
893 | ||
894 | default: | |
895 | panic("gethead: unknown inode type %d\n", buf->c_type); | |
896 | break; | |
897 | } | |
2cb5dabb KM |
898 | if (dflag) |
899 | accthdr(buf); | |
900 | return(GOOD); | |
901 | } | |
902 | ||
903 | /* | |
904 | * Check that a header is where it belongs and predict the next header | |
905 | */ | |
906 | accthdr(header) | |
907 | struct s_spcl *header; | |
908 | { | |
7851e15d | 909 | static ino_t previno = 0x7fffffff; |
2cb5dabb KM |
910 | static int prevtype; |
911 | static long predict; | |
912 | long blks, i; | |
913 | ||
8d412b7c | 914 | if (header->c_type == TS_TAPE) { |
5c5f44c7 | 915 | fprintf(stderr, "Volume header\n"); |
b8f4e820 | 916 | previno = 0x7fffffff; |
5c5f44c7 KM |
917 | return; |
918 | } | |
7851e15d | 919 | if (previno == 0x7fffffff) |
2cb5dabb KM |
920 | goto newcalc; |
921 | switch (prevtype) { | |
2cb5dabb | 922 | case TS_BITS: |
5c5f44c7 | 923 | fprintf(stderr, "Dump mask header"); |
2cb5dabb KM |
924 | break; |
925 | case TS_CLRI: | |
5c5f44c7 | 926 | fprintf(stderr, "Remove mask header"); |
2cb5dabb KM |
927 | break; |
928 | case TS_INODE: | |
5c5f44c7 | 929 | fprintf(stderr, "File header, ino %d", previno); |
2cb5dabb KM |
930 | break; |
931 | case TS_ADDR: | |
5c5f44c7 | 932 | fprintf(stderr, "File continuation header, ino %d", previno); |
2cb5dabb KM |
933 | break; |
934 | case TS_END: | |
5c5f44c7 | 935 | fprintf(stderr, "End of tape header"); |
2cb5dabb KM |
936 | break; |
937 | } | |
2cb5dabb KM |
938 | if (predict != blksread - 1) |
939 | fprintf(stderr, "; predicted %d blocks, got %d blocks", | |
940 | predict, blksread - 1); | |
941 | fprintf(stderr, "\n"); | |
942 | newcalc: | |
943 | blks = 0; | |
5c5f44c7 | 944 | if (header->c_type != TS_END) |
2cb5dabb KM |
945 | for (i = 0; i < header->c_count; i++) |
946 | if (header->c_addr[i] != 0) | |
947 | blks++; | |
948 | predict = blks; | |
949 | blksread = 0; | |
950 | prevtype = header->c_type; | |
951 | previno = header->c_inumber; | |
f78e116c KM |
952 | } |
953 | ||
954 | /* | |
955 | * Find an inode header. | |
956 | * Complain if had to skip, and complain is set. | |
957 | */ | |
b32320ae | 958 | findinode(header) |
f78e116c | 959 | struct s_spcl *header; |
f78e116c | 960 | { |
2cb5dabb | 961 | static long skipcnt = 0; |
b8f4e820 KM |
962 | long i; |
963 | char buf[TP_BSIZE]; | |
f78e116c KM |
964 | |
965 | curfile.name = "<name unknown>"; | |
966 | curfile.action = UNKNOWN; | |
967 | curfile.dip = (struct dinode *)NIL; | |
968 | curfile.ino = 0; | |
2cb5dabb KM |
969 | if (ishead(header) == FAIL) { |
970 | skipcnt++; | |
7702e9a8 | 971 | while (gethead(header) == FAIL || header->c_date != dumpdate) |
f78e116c | 972 | skipcnt++; |
2cb5dabb | 973 | } |
f78e116c | 974 | for (;;) { |
b8f4e820 KM |
975 | if (checktype(header, TS_ADDR) == GOOD) { |
976 | /* | |
977 | * Skip up to the beginning of the next record | |
978 | */ | |
979 | for (i = 0; i < header->c_count; i++) | |
980 | if (header->c_addr[i]) | |
981 | readtape(buf); | |
982 | (void) gethead(header); | |
983 | continue; | |
984 | } | |
2cb5dabb | 985 | if (checktype(header, TS_INODE) == GOOD) { |
f78e116c KM |
986 | curfile.dip = &header->c_dinode; |
987 | curfile.ino = header->c_inumber; | |
988 | break; | |
989 | } | |
2cb5dabb | 990 | if (checktype(header, TS_END) == GOOD) { |
f78e116c KM |
991 | curfile.ino = maxino; |
992 | break; | |
993 | } | |
2cb5dabb | 994 | if (checktype(header, TS_CLRI) == GOOD) { |
f78e116c | 995 | curfile.name = "<file removal list>"; |
e108d3a2 | 996 | break; |
f78e116c | 997 | } |
2cb5dabb | 998 | if (checktype(header, TS_BITS) == GOOD) { |
f78e116c | 999 | curfile.name = "<file dump list>"; |
e108d3a2 | 1000 | break; |
f78e116c | 1001 | } |
2cb5dabb | 1002 | while (gethead(header) == FAIL) |
f78e116c KM |
1003 | skipcnt++; |
1004 | } | |
b32320ae | 1005 | if (skipcnt > 0) |
dd1900f1 | 1006 | fprintf(stderr, "resync restore, skipped %d blocks\n", skipcnt); |
f78e116c KM |
1007 | skipcnt = 0; |
1008 | } | |
1009 | ||
1010 | /* | |
1011 | * return whether or not the buffer contains a header block | |
1012 | */ | |
1013 | ishead(buf) | |
1014 | struct s_spcl *buf; | |
1015 | { | |
1016 | ||
1017 | if (buf->c_magic != NFS_MAGIC) | |
2cb5dabb KM |
1018 | return(FAIL); |
1019 | return(GOOD); | |
f78e116c KM |
1020 | } |
1021 | ||
1022 | checktype(b, t) | |
1023 | struct s_spcl *b; | |
1024 | int t; | |
1025 | { | |
1026 | ||
2cb5dabb KM |
1027 | if (b->c_type != t) |
1028 | return(FAIL); | |
1029 | return(GOOD); | |
f78e116c KM |
1030 | } |
1031 | ||
1032 | checksum(b) | |
1033 | register int *b; | |
1034 | { | |
1035 | register int i, j; | |
1036 | ||
1037 | j = sizeof(union u_spcl) / sizeof(int); | |
1038 | i = 0; | |
b4c41341 KS |
1039 | if(!Bcvt) { |
1040 | do | |
1041 | i += *b++; | |
1042 | while (--j); | |
1043 | } else { | |
1044 | /* What happens if we want to read restore tapes | |
1045 | for a 16bit int machine??? */ | |
1046 | do | |
1047 | i += swabl(*b++); | |
1048 | while (--j); | |
1049 | } | |
1050 | ||
f78e116c KM |
1051 | if (i != CHECKSUM) { |
1052 | fprintf(stderr, "Checksum error %o, inode %d file %s\n", i, | |
1053 | curfile.ino, curfile.name); | |
2cb5dabb | 1054 | return(FAIL); |
f78e116c | 1055 | } |
2cb5dabb | 1056 | return(GOOD); |
f78e116c KM |
1057 | } |
1058 | ||
e9e7ecc4 | 1059 | #ifdef RRESTORE |
74025ab9 | 1060 | /* VARARGS1 */ |
f78e116c KM |
1061 | msg(cp, a1, a2, a3) |
1062 | char *cp; | |
1063 | { | |
1064 | ||
1065 | fprintf(stderr, cp, a1, a2, a3); | |
1066 | } | |
e9e7ecc4 | 1067 | #endif RRESTORE |
b4c41341 KS |
1068 | |
1069 | swabst(cp, sp) | |
1070 | register char *cp, *sp; | |
1071 | { | |
1072 | int n = 0; | |
1073 | char c; | |
1074 | while(*cp) { | |
1075 | switch (*cp) { | |
1076 | case '0': case '1': case '2': case '3': case '4': | |
1077 | case '5': case '6': case '7': case '8': case '9': | |
1078 | n = (n * 10) + (*cp++ - '0'); | |
1079 | continue; | |
1080 | ||
1081 | case 's': case 'w': case 'h': | |
1082 | c = sp[0]; sp[0] = sp[1]; sp[1] = c; | |
1083 | sp++; | |
1084 | break; | |
1085 | ||
1086 | case 'l': | |
1087 | c = sp[0]; sp[0] = sp[3]; sp[3] = c; | |
1088 | c = sp[2]; sp[2] = sp[1]; sp[1] = c; | |
1089 | sp += 3; | |
1090 | } | |
1091 | sp++; /* Any other character, like 'b' counts as byte. */ | |
1092 | if (n <= 1) { | |
1093 | n = 0; cp++; | |
1094 | } else | |
1095 | n--; | |
1096 | } | |
1097 | } | |
1098 | swabl(x) { unsigned long l = x; swabst("l", (char *)&l); return l; } |