Commit | Line | Data |
---|---|---|
8c5eec2f | 1 | /* |
b42768a6 KB |
2 | * Copyright (c) 1983 The Regents of the University of California. |
3 | * All rights reserved. | |
4 | * | |
70ab3c27 | 5 | * %sccs.include.redist.c% |
8c5eec2f | 6 | */ |
f78e116c | 7 | |
8c5eec2f | 8 | #ifndef lint |
2532f4a9 | 9 | static char sccsid[] = "@(#)tape.c 5.22 (Berkeley) %G%"; |
b42768a6 | 10 | #endif /* not lint */ |
ebd1f727 | 11 | |
f78e116c | 12 | #include "restore.h" |
d9127117 | 13 | #include <protocols/dumprestore.h> |
f78e116c KM |
14 | #include <sys/ioctl.h> |
15 | #include <sys/mtio.h> | |
2cb5dabb | 16 | #include <sys/file.h> |
f78e116c | 17 | #include <setjmp.h> |
a7b24fe9 | 18 | #include <sys/stat.h> |
7abf8d65 | 19 | #include "pathnames.h" |
2cb5dabb | 20 | |
bdeceadb | 21 | static long fssize = MAXBSIZE; |
2cb5dabb KM |
22 | static int mt = -1; |
23 | static int pipein = 0; | |
7eb08dfe | 24 | static char magtape[BUFSIZ]; |
19230a53 | 25 | static int bct; |
c8fb0747 | 26 | static int numtrec; |
19230a53 | 27 | static char *tbf; |
2cb5dabb | 28 | static union u_spcl endoftapemark; |
2532f4a9 | 29 | static long blksread; /* blocks read since last header */ |
170639fd | 30 | static long tapesread; |
2cb5dabb KM |
31 | static jmp_buf restart; |
32 | static int gettingfile = 0; /* restart has a valid frame */ | |
2532f4a9 | 33 | static char *host = NULL; |
2cb5dabb KM |
34 | |
35 | static int ofile; | |
36 | static char *map; | |
37 | static char lnkbuf[MAXPATHLEN + 1]; | |
38 | static int pathlen; | |
f78e116c | 39 | |
b4c41341 KS |
40 | int Bcvt; /* Swap Bytes (for CCI or sun) */ |
41 | static int Qcvt; /* Swap quads (for sun) */ | |
025e61b9 | 42 | u_long swabl(); |
2532f4a9 | 43 | |
f78e116c KM |
44 | /* |
45 | * Set up an input source | |
46 | */ | |
47 | setinput(source) | |
48 | char *source; | |
49 | { | |
7abf8d65 | 50 | extern int errno; |
7abf8d65 | 51 | char *strerror(); |
f78e116c | 52 | |
19230a53 | 53 | flsht(); |
b97e998a KM |
54 | if (bflag) |
55 | newtapebuf(ntrec); | |
56 | else | |
57 | newtapebuf(NTREC > HIGHDENSITYTREC ? NTREC : HIGHDENSITYTREC); | |
9c695c61 | 58 | terminal = stdin; |
2532f4a9 | 59 | |
e9e7ecc4 | 60 | #ifdef RRESTORE |
2532f4a9 KM |
61 | if (index(source, ':')) { |
62 | host = source; | |
63 | source = index(host, ':'); | |
64 | *source++ = '\0'; | |
65 | if (rmthost(host) == 0) | |
66 | done(1); | |
67 | } else | |
68 | #endif | |
9c695c61 | 69 | if (strcmp(source, "-") == 0) { |
b677c5d7 KM |
70 | /* |
71 | * Since input is coming from a pipe we must establish | |
72 | * our own connection to the terminal. | |
73 | */ | |
7abf8d65 | 74 | terminal = fopen(_PATH_TTY, "r"); |
b677c5d7 | 75 | if (terminal == NULL) { |
7abf8d65 | 76 | (void)fprintf(stderr, "Cannot open %s: %s\n", |
2532f4a9 | 77 | _PATH_TTY, strerror(errno)); |
7abf8d65 | 78 | terminal = fopen(_PATH_DEVNULL, "r"); |
b8eb5f1f | 79 | if (terminal == NULL) { |
2532f4a9 KM |
80 | (void)fprintf(stderr, "Cannot open %s: %s\n", |
81 | _PATH_DEVNULL, strerror(errno)); | |
b8eb5f1f KM |
82 | done(1); |
83 | } | |
b677c5d7 | 84 | } |
2cb5dabb | 85 | pipein++; |
2cb5dabb | 86 | } |
2532f4a9 | 87 | setuid(getuid()); /* no longer need or want root privileges */ |
7eb08dfe | 88 | (void) strcpy(magtape, source); |
f78e116c KM |
89 | } |
90 | ||
b97e998a KM |
91 | newtapebuf(size) |
92 | long size; | |
93 | { | |
94 | static tbfsize = -1; | |
95 | ||
96 | ntrec = size; | |
97 | if (size <= tbfsize) | |
98 | return; | |
99 | if (tbf != NULL) | |
100 | free(tbf); | |
101 | tbf = (char *)malloc(size * TP_BSIZE); | |
102 | if (tbf == NULL) { | |
103 | fprintf(stderr, "Cannot allocate space for tape buffer\n"); | |
104 | done(1); | |
105 | } | |
106 | tbfsize = size; | |
107 | } | |
108 | ||
f78e116c KM |
109 | /* |
110 | * Verify that the tape drive can be accessed and | |
111 | * that it actually is a dump tape. | |
112 | */ | |
113 | setup() | |
114 | { | |
2cb5dabb | 115 | int i, j, *ip; |
f78e116c | 116 | struct stat stbuf; |
f78e116c KM |
117 | extern int xtrmap(), xtrmapskip(); |
118 | ||
119 | vprintf(stdout, "Verify tape and initialize maps\n"); | |
e9e7ecc4 | 120 | #ifdef RRESTORE |
2532f4a9 KM |
121 | if (host) |
122 | mt = rmtopen(magtape, 0); | |
123 | else | |
124 | #endif | |
2cb5dabb KM |
125 | if (pipein) |
126 | mt = 0; | |
2532f4a9 KM |
127 | else |
128 | mt = open(magtape, 0); | |
129 | if (mt < 0) { | |
e9e7ecc4 | 130 | perror(magtape); |
f78e116c KM |
131 | done(1); |
132 | } | |
768eb687 KM |
133 | volno = 1; |
134 | setdumpnum(); | |
f78e116c | 135 | flsht(); |
b97e998a KM |
136 | if (!pipein && !bflag) |
137 | findtapeblksize(); | |
5c5f44c7 | 138 | if (gethead(&spcl) == FAIL) { |
f78e116c | 139 | bct--; /* push back this block */ |
2532f4a9 | 140 | blksread--; |
f78e116c | 141 | cvtflag++; |
5c5f44c7 | 142 | if (gethead(&spcl) == FAIL) { |
f78e116c KM |
143 | fprintf(stderr, "Tape is not a dump tape\n"); |
144 | done(1); | |
145 | } | |
146 | fprintf(stderr, "Converting to new file system format.\n"); | |
147 | } | |
2cb5dabb KM |
148 | if (pipein) { |
149 | endoftapemark.s_spcl.c_magic = cvtflag ? OFS_MAGIC : NFS_MAGIC; | |
150 | endoftapemark.s_spcl.c_type = TS_END; | |
151 | ip = (int *)&endoftapemark; | |
152 | j = sizeof(union u_spcl) / sizeof(int); | |
153 | i = 0; | |
154 | do | |
155 | i += *ip++; | |
156 | while (--j); | |
157 | endoftapemark.s_spcl.c_checksum = CHECKSUM - i; | |
158 | } | |
b32320ae KM |
159 | if (vflag || command == 't') |
160 | printdumpinfo(); | |
f78e116c | 161 | dumptime = spcl.c_ddate; |
2cb5dabb | 162 | dumpdate = spcl.c_date; |
f78e116c | 163 | if (stat(".", &stbuf) < 0) { |
e9e7ecc4 | 164 | perror("cannot stat ."); |
f78e116c KM |
165 | done(1); |
166 | } | |
bdeceadb KM |
167 | if (stbuf.st_blksize > 0 && stbuf.st_blksize <= MAXBSIZE) |
168 | fssize = stbuf.st_blksize; | |
169 | if (((fssize - 1) & fssize) != 0) { | |
f78e116c KM |
170 | fprintf(stderr, "bad block size %d\n", fssize); |
171 | done(1); | |
172 | } | |
2cb5dabb | 173 | if (checkvol(&spcl, (long)1) == FAIL) { |
f78e116c KM |
174 | fprintf(stderr, "Tape is not volume 1 of the dump\n"); |
175 | done(1); | |
176 | } | |
2cb5dabb KM |
177 | if (readhdr(&spcl) == FAIL) |
178 | panic("no header after volume mark!\n"); | |
b32320ae | 179 | findinode(&spcl); |
2cb5dabb | 180 | if (checktype(&spcl, TS_CLRI) == FAIL) { |
f78e116c KM |
181 | fprintf(stderr, "Cannot find file removal list\n"); |
182 | done(1); | |
183 | } | |
2cb5dabb | 184 | maxino = (spcl.c_count * TP_BSIZE * NBBY) + 1; |
768eb687 | 185 | dprintf(stdout, "maxino = %d\n", maxino); |
7851e15d | 186 | map = calloc((unsigned)1, (unsigned)howmany(maxino, NBBY)); |
f78e116c KM |
187 | if (map == (char *)NIL) |
188 | panic("no memory for file removal list\n"); | |
cf6db0ab | 189 | clrimap = map; |
f78e116c KM |
190 | curfile.action = USING; |
191 | getfile(xtrmap, xtrmapskip); | |
2cb5dabb | 192 | if (checktype(&spcl, TS_BITS) == FAIL) { |
f78e116c KM |
193 | fprintf(stderr, "Cannot find file dump list\n"); |
194 | done(1); | |
195 | } | |
7851e15d | 196 | map = calloc((unsigned)1, (unsigned)howmany(maxino, NBBY)); |
f78e116c KM |
197 | if (map == (char *)NULL) |
198 | panic("no memory for file dump list\n"); | |
cf6db0ab | 199 | dumpmap = map; |
f78e116c KM |
200 | curfile.action = USING; |
201 | getfile(xtrmap, xtrmapskip); | |
f78e116c KM |
202 | } |
203 | ||
170639fd KM |
204 | /* |
205 | * Prompt user to load a new dump volume. | |
206 | * "Nextvol" is the next suggested volume to use. | |
207 | * This suggested volume is enforced when doing full | |
208 | * or incremental restores, but can be overrridden by | |
209 | * the user when only extracting a subset of the files. | |
210 | */ | |
f78e116c KM |
211 | getvol(nextvol) |
212 | long nextvol; | |
213 | { | |
2532f4a9 | 214 | long newvol, savecnt, i; |
f78e116c KM |
215 | union u_spcl tmpspcl; |
216 | # define tmpbuf tmpspcl.s_spcl | |
b32320ae | 217 | char buf[TP_BSIZE]; |
cb2a63da | 218 | extern char *ctime(); |
f78e116c | 219 | |
a162cc0b | 220 | if (nextvol == 1) { |
170639fd | 221 | tapesread = 0; |
a162cc0b KM |
222 | gettingfile = 0; |
223 | } | |
2cb5dabb | 224 | if (pipein) { |
e108d3a2 | 225 | if (nextvol != 1) |
2cb5dabb | 226 | panic("Changing volumes on pipe input?\n"); |
e108d3a2 KM |
227 | if (volno == 1) |
228 | return; | |
229 | goto gethdr; | |
2cb5dabb KM |
230 | } |
231 | savecnt = blksread; | |
f78e116c | 232 | again: |
e108d3a2 KM |
233 | if (pipein) |
234 | done(1); /* pipes do not get a second chance */ | |
f78e116c KM |
235 | if (command == 'R' || command == 'r' || curfile.action != SKIP) |
236 | newvol = nextvol; | |
2532f4a9 | 237 | else |
f78e116c KM |
238 | newvol = 0; |
239 | while (newvol <= 0) { | |
170639fd KM |
240 | if (tapesread == 0) { |
241 | fprintf(stderr, "%s%s%s%s%s", | |
242 | "You have not read any tapes yet.\n", | |
243 | "Unless you know which volume your", | |
244 | " file(s) are on you should start\n", | |
245 | "with the last volume and work", | |
b4c41341 | 246 | " towards towards the first.\n"); |
170639fd KM |
247 | } else { |
248 | fprintf(stderr, "You have read volumes"); | |
249 | strcpy(tbf, ": "); | |
250 | for (i = 1; i < 32; i++) | |
251 | if (tapesread & (1 << i)) { | |
252 | fprintf(stderr, "%s%d", tbf, i); | |
253 | strcpy(tbf, ", "); | |
254 | } | |
255 | fprintf(stderr, "\n"); | |
256 | } | |
538cb7bb | 257 | do { |
b677c5d7 KM |
258 | fprintf(stderr, "Specify next volume #: "); |
259 | (void) fflush(stderr); | |
260 | (void) fgets(tbf, BUFSIZ, terminal); | |
261 | } while (!feof(terminal) && tbf[0] == '\n'); | |
262 | if (feof(terminal)) | |
538cb7bb | 263 | done(1); |
f78e116c KM |
264 | newvol = atoi(tbf); |
265 | if (newvol <= 0) { | |
266 | fprintf(stderr, | |
267 | "Volume numbers are positive numerics\n"); | |
268 | } | |
269 | } | |
170639fd KM |
270 | if (newvol == volno) { |
271 | tapesread |= 1 << volno; | |
f78e116c | 272 | return; |
170639fd | 273 | } |
f78e116c | 274 | closemt(); |
7eb08dfe | 275 | fprintf(stderr, "Mount tape volume %d\n", newvol); |
eb317d51 KM |
276 | fprintf(stderr, "Enter ``none'' if there are no more tapes\n"); |
277 | fprintf(stderr, "otherwise enter tape name (default: %s) ", magtape); | |
b677c5d7 | 278 | (void) fflush(stderr); |
7eb08dfe KM |
279 | (void) fgets(tbf, BUFSIZ, terminal); |
280 | if (feof(terminal)) | |
281 | done(1); | |
eb317d51 KM |
282 | if (!strcmp(tbf, "none\n")) { |
283 | curfile.name = "<name unknown>"; | |
284 | curfile.action = UNKNOWN; | |
285 | curfile.dip = (struct dinode *)NIL; | |
286 | curfile.ino = maxino; | |
287 | if (gettingfile) { | |
288 | gettingfile = 0; | |
289 | longjmp(restart, 1); | |
290 | } | |
291 | } | |
7eb08dfe KM |
292 | if (tbf[0] != '\n') { |
293 | (void) strcpy(magtape, tbf); | |
294 | magtape[strlen(magtape) - 1] = '\0'; | |
295 | } | |
e9e7ecc4 | 296 | #ifdef RRESTORE |
2532f4a9 KM |
297 | if (host) |
298 | mt = rmtopen(magtape, 0); | |
299 | else | |
f78e116c | 300 | #endif |
2532f4a9 KM |
301 | mt = open(magtape, 0); |
302 | ||
303 | if (mt == -1) { | |
7eb08dfe KM |
304 | fprintf(stderr, "Cannot open %s\n", magtape); |
305 | volno = -1; | |
f78e116c KM |
306 | goto again; |
307 | } | |
e108d3a2 | 308 | gethdr: |
f78e116c | 309 | volno = newvol; |
768eb687 | 310 | setdumpnum(); |
f78e116c | 311 | flsht(); |
2cb5dabb | 312 | if (readhdr(&tmpbuf) == FAIL) { |
f78e116c KM |
313 | fprintf(stderr, "tape is not dump tape\n"); |
314 | volno = 0; | |
315 | goto again; | |
316 | } | |
2cb5dabb | 317 | if (checkvol(&tmpbuf, volno) == FAIL) { |
f78e116c KM |
318 | fprintf(stderr, "Wrong volume (%d)\n", tmpbuf.c_volume); |
319 | volno = 0; | |
320 | goto again; | |
321 | } | |
2cb5dabb | 322 | if (tmpbuf.c_date != dumpdate || tmpbuf.c_ddate != dumptime) { |
3dbddecd KM |
323 | fprintf(stderr, "Wrong dump date\n\tgot: %s", |
324 | ctime(&tmpbuf.c_date)); | |
325 | fprintf(stderr, "\twanted: %s", ctime(&dumpdate)); | |
2cb5dabb KM |
326 | volno = 0; |
327 | goto again; | |
328 | } | |
170639fd | 329 | tapesread |= 1 << volno; |
5c5f44c7 | 330 | blksread = savecnt; |
f78e116c KM |
331 | if (curfile.action == USING) { |
332 | if (volno == 1) | |
333 | panic("active file into volume 1\n"); | |
334 | return; | |
335 | } | |
b32320ae KM |
336 | /* |
337 | * Skip up to the beginning of the next record | |
338 | */ | |
8d412b7c | 339 | if (tmpbuf.c_type == TS_TAPE && (tmpbuf.c_flags & DR_NEWHEADER)) |
b32320ae KM |
340 | for (i = tmpbuf.c_count; i > 0; i--) |
341 | readtape(buf); | |
5c5f44c7 | 342 | (void) gethead(&spcl); |
b32320ae | 343 | findinode(&spcl); |
f78e116c KM |
344 | if (gettingfile) { |
345 | gettingfile = 0; | |
346 | longjmp(restart, 1); | |
347 | } | |
348 | } | |
349 | ||
768eb687 KM |
350 | /* |
351 | * handle multiple dumps per tape by skipping forward to the | |
352 | * appropriate one. | |
353 | */ | |
354 | setdumpnum() | |
355 | { | |
356 | struct mtop tcom; | |
357 | ||
358 | if (dumpnum == 1 || volno != 1) | |
359 | return; | |
360 | if (pipein) { | |
361 | fprintf(stderr, "Cannot have multiple dumps on pipe input\n"); | |
362 | done(1); | |
363 | } | |
364 | tcom.mt_op = MTFSF; | |
365 | tcom.mt_count = dumpnum - 1; | |
e9e7ecc4 | 366 | #ifdef RRESTORE |
2532f4a9 KM |
367 | if (host) |
368 | rmtioctl(MTFSF, dumpnum - 1); | |
369 | else | |
768eb687 | 370 | #endif |
2532f4a9 KM |
371 | if (ioctl(mt, (int)MTIOCTOP, (char *)&tcom) < 0) |
372 | perror("ioctl MTFSF"); | |
768eb687 KM |
373 | } |
374 | ||
b32320ae KM |
375 | printdumpinfo() |
376 | { | |
cb2a63da | 377 | extern char *ctime(); |
b32320ae KM |
378 | |
379 | fprintf(stdout, "Dump date: %s", ctime(&spcl.c_date)); | |
f441de4a KM |
380 | fprintf(stdout, "Dumped from: %s", |
381 | (spcl.c_ddate == 0) ? "the epoch\n" : ctime(&spcl.c_ddate)); | |
b32320ae KM |
382 | if (spcl.c_host[0] == '\0') |
383 | return; | |
384 | fprintf(stderr, "Level %d dump of %s on %s:%s\n", | |
385 | spcl.c_level, spcl.c_filesys, spcl.c_host, spcl.c_dev); | |
386 | fprintf(stderr, "Label: %s\n", spcl.c_label); | |
387 | } | |
388 | ||
f78e116c KM |
389 | extractfile(name) |
390 | char *name; | |
391 | { | |
392 | int mode; | |
165b1daf | 393 | struct timeval timep[2]; |
f78e116c KM |
394 | struct entry *ep; |
395 | extern int xtrlnkfile(), xtrlnkskip(); | |
396 | extern int xtrfile(), xtrskip(); | |
397 | ||
398 | curfile.name = name; | |
399 | curfile.action = USING; | |
165b1daf KM |
400 | timep[0].tv_sec = curfile.dip->di_atime; |
401 | timep[0].tv_usec = 0; | |
402 | timep[1].tv_sec = curfile.dip->di_mtime; | |
403 | timep[1].tv_usec = 0; | |
f78e116c KM |
404 | mode = curfile.dip->di_mode; |
405 | switch (mode & IFMT) { | |
406 | ||
407 | default: | |
408 | fprintf(stderr, "%s: unknown file mode 0%o\n", name, mode); | |
409 | skipfile(); | |
410 | return (FAIL); | |
411 | ||
74e940f5 KM |
412 | case IFSOCK: |
413 | vprintf(stdout, "skipped socket %s\n", name); | |
414 | skipfile(); | |
415 | return (GOOD); | |
416 | ||
f78e116c KM |
417 | case IFDIR: |
418 | if (mflag) { | |
419 | ep = lookupname(name); | |
420 | if (ep == NIL || ep->e_flags & EXTRACT) | |
421 | panic("unextracted directory %s\n", name); | |
422 | skipfile(); | |
423 | return (GOOD); | |
424 | } | |
425 | vprintf(stdout, "extract file %s\n", name); | |
426 | return (genliteraldir(name, curfile.ino)); | |
427 | ||
428 | case IFLNK: | |
429 | lnkbuf[0] = '\0'; | |
430 | pathlen = 0; | |
431 | getfile(xtrlnkfile, xtrlnkskip); | |
432 | if (pathlen == 0) { | |
433 | vprintf(stdout, | |
434 | "%s: zero length symbolic link (ignored)\n", name); | |
bdeceadb KM |
435 | return (GOOD); |
436 | } | |
437 | return (linkit(lnkbuf, name, SYMLINK)); | |
f78e116c KM |
438 | |
439 | case IFCHR: | |
440 | case IFBLK: | |
441 | vprintf(stdout, "extract special file %s\n", name); | |
414c4f09 KM |
442 | if (Nflag) { |
443 | skipfile(); | |
444 | return (GOOD); | |
445 | } | |
f78e116c | 446 | if (mknod(name, mode, (int)curfile.dip->di_rdev) < 0) { |
e9e7ecc4 KM |
447 | fprintf(stderr, "%s: ", name); |
448 | (void) fflush(stderr); | |
449 | perror("cannot create special file"); | |
f78e116c KM |
450 | skipfile(); |
451 | return (FAIL); | |
452 | } | |
768eb687 KM |
453 | (void) chown(name, curfile.dip->di_uid, curfile.dip->di_gid); |
454 | (void) chmod(name, mode); | |
f78e116c | 455 | skipfile(); |
165b1daf | 456 | utimes(name, timep); |
f78e116c KM |
457 | return (GOOD); |
458 | ||
459 | case IFREG: | |
460 | vprintf(stdout, "extract file %s\n", name); | |
414c4f09 KM |
461 | if (Nflag) { |
462 | skipfile(); | |
463 | return (GOOD); | |
464 | } | |
15aeb519 | 465 | if ((ofile = creat(name, 0666)) < 0) { |
e9e7ecc4 KM |
466 | fprintf(stderr, "%s: ", name); |
467 | (void) fflush(stderr); | |
468 | perror("cannot create file"); | |
f78e116c KM |
469 | skipfile(); |
470 | return (FAIL); | |
471 | } | |
768eb687 KM |
472 | (void) fchown(ofile, curfile.dip->di_uid, curfile.dip->di_gid); |
473 | (void) fchmod(ofile, mode); | |
f78e116c | 474 | getfile(xtrfile, xtrskip); |
768eb687 | 475 | (void) close(ofile); |
165b1daf | 476 | utimes(name, timep); |
f78e116c KM |
477 | return (GOOD); |
478 | } | |
479 | /* NOTREACHED */ | |
480 | } | |
481 | ||
e108d3a2 KM |
482 | /* |
483 | * skip over bit maps on the tape | |
484 | */ | |
485 | skipmaps() | |
486 | { | |
487 | ||
488 | while (checktype(&spcl, TS_CLRI) == GOOD || | |
489 | checktype(&spcl, TS_BITS) == GOOD) | |
490 | skipfile(); | |
491 | } | |
492 | ||
493 | /* | |
494 | * skip over a file on the tape | |
495 | */ | |
f78e116c KM |
496 | skipfile() |
497 | { | |
498 | extern int null(); | |
499 | ||
500 | curfile.action = SKIP; | |
501 | getfile(null, null); | |
502 | } | |
503 | ||
504 | /* | |
505 | * Do the file extraction, calling the supplied functions | |
506 | * with the blocks | |
507 | */ | |
508 | getfile(f1, f2) | |
509 | int (*f2)(), (*f1)(); | |
510 | { | |
511 | register int i; | |
512 | int curblk = 0; | |
513 | off_t size = spcl.c_dinode.di_size; | |
514 | static char clearedbuf[MAXBSIZE]; | |
515 | char buf[MAXBSIZE / TP_BSIZE][TP_BSIZE]; | |
4f8ea093 | 516 | char junk[TP_BSIZE]; |
f78e116c | 517 | |
2cb5dabb | 518 | if (checktype(&spcl, TS_END) == GOOD) |
f78e116c | 519 | panic("ran off end of tape\n"); |
e108d3a2 | 520 | if (ishead(&spcl) == FAIL) |
f78e116c | 521 | panic("not at beginning of a file\n"); |
e108d3a2 | 522 | if (!gettingfile && setjmp(restart) != 0) |
f78e116c KM |
523 | return; |
524 | gettingfile++; | |
525 | loop: | |
526 | for (i = 0; i < spcl.c_count; i++) { | |
527 | if (spcl.c_addr[i]) { | |
528 | readtape(&buf[curblk++][0]); | |
529 | if (curblk == fssize / TP_BSIZE) { | |
530 | (*f1)(buf, size > TP_BSIZE ? | |
531 | (long) (fssize) : | |
532 | (curblk - 1) * TP_BSIZE + size); | |
533 | curblk = 0; | |
534 | } | |
535 | } else { | |
536 | if (curblk > 0) { | |
537 | (*f1)(buf, size > TP_BSIZE ? | |
538 | (long) (curblk * TP_BSIZE) : | |
539 | (curblk - 1) * TP_BSIZE + size); | |
540 | curblk = 0; | |
541 | } | |
542 | (*f2)(clearedbuf, size > TP_BSIZE ? | |
543 | (long) TP_BSIZE : size); | |
544 | } | |
4f8ea093 KM |
545 | if ((size -= TP_BSIZE) <= 0) { |
546 | for (i++; i < spcl.c_count; i++) | |
547 | if (spcl.c_addr[i]) | |
548 | readtape(junk); | |
9f13f26d | 549 | break; |
4f8ea093 | 550 | } |
f78e116c | 551 | } |
5c5f44c7 | 552 | if (readhdr(&spcl) == GOOD && size > 0) { |
9f13f26d KM |
553 | if (checktype(&spcl, TS_ADDR) == GOOD) |
554 | goto loop; | |
768eb687 | 555 | dprintf(stdout, "Missing address (header) block for %s\n", |
f78e116c | 556 | curfile.name); |
f78e116c | 557 | } |
9f13f26d | 558 | if (curblk > 0) |
f78e116c | 559 | (*f1)(buf, (curblk * TP_BSIZE) + size); |
b32320ae | 560 | findinode(&spcl); |
f78e116c KM |
561 | gettingfile = 0; |
562 | } | |
563 | ||
564 | /* | |
565 | * The next routines are called during file extraction to | |
566 | * put the data into the right form and place. | |
567 | */ | |
568 | xtrfile(buf, size) | |
569 | char *buf; | |
570 | long size; | |
571 | { | |
572 | ||
414c4f09 KM |
573 | if (Nflag) |
574 | return; | |
f78e116c KM |
575 | if (write(ofile, buf, (int) size) == -1) { |
576 | fprintf(stderr, "write error extracting inode %d, name %s\n", | |
577 | curfile.ino, curfile.name); | |
578 | perror("write"); | |
579 | done(1); | |
580 | } | |
581 | } | |
582 | ||
583 | xtrskip(buf, size) | |
584 | char *buf; | |
585 | long size; | |
586 | { | |
587 | ||
588 | #ifdef lint | |
589 | buf = buf; | |
590 | #endif | |
591 | if (lseek(ofile, size, 1) == (long)-1) { | |
592 | fprintf(stderr, "seek error extracting inode %d, name %s\n", | |
593 | curfile.ino, curfile.name); | |
594 | perror("lseek"); | |
595 | done(1); | |
596 | } | |
597 | } | |
598 | ||
599 | xtrlnkfile(buf, size) | |
600 | char *buf; | |
601 | long size; | |
602 | { | |
603 | ||
604 | pathlen += size; | |
605 | if (pathlen > MAXPATHLEN) { | |
606 | fprintf(stderr, "symbolic link name: %s->%s%s; too long %d\n", | |
607 | curfile.name, lnkbuf, buf, pathlen); | |
608 | done(1); | |
609 | } | |
538cb7bb | 610 | (void) strcat(lnkbuf, buf); |
f78e116c KM |
611 | } |
612 | ||
613 | xtrlnkskip(buf, size) | |
614 | char *buf; | |
615 | long size; | |
616 | { | |
617 | ||
618 | #ifdef lint | |
619 | buf = buf, size = size; | |
620 | #endif | |
621 | fprintf(stderr, "unallocated block in symbolic link %s\n", | |
622 | curfile.name); | |
623 | done(1); | |
624 | } | |
625 | ||
626 | xtrmap(buf, size) | |
627 | char *buf; | |
628 | long size; | |
629 | { | |
630 | ||
631 | bcopy(buf, map, size); | |
cf6db0ab | 632 | map += size; |
f78e116c KM |
633 | } |
634 | ||
635 | xtrmapskip(buf, size) | |
636 | char *buf; | |
637 | long size; | |
638 | { | |
639 | ||
640 | #ifdef lint | |
641 | buf = buf; | |
f78e116c KM |
642 | #endif |
643 | panic("hole in map\n"); | |
cf6db0ab | 644 | map += size; |
f78e116c KM |
645 | } |
646 | ||
647 | null() {;} | |
648 | ||
649 | /* | |
650 | * Do the tape i/o, dealing with volume changes | |
651 | * etc.. | |
652 | */ | |
653 | readtape(b) | |
654 | char *b; | |
655 | { | |
656 | register long i; | |
7851e15d KM |
657 | long rd, newvol; |
658 | int cnt; | |
2532f4a9 | 659 | int seek_failed; |
f78e116c | 660 | |
c8fb0747 | 661 | if (bct < numtrec) { |
b97e998a KM |
662 | bcopy(&tbf[(bct++*TP_BSIZE)], b, (long)TP_BSIZE); |
663 | blksread++; | |
664 | return; | |
665 | } | |
666 | for (i = 0; i < ntrec; i++) | |
667 | ((struct s_spcl *)&tbf[i*TP_BSIZE])->c_magic = 0; | |
c8fb0747 KM |
668 | if (numtrec == 0) |
669 | numtrec = ntrec; | |
2532f4a9 | 670 | cnt = ntrec * TP_BSIZE; |
b97e998a KM |
671 | rd = 0; |
672 | getmore: | |
e9e7ecc4 | 673 | #ifdef RRESTORE |
2532f4a9 KM |
674 | if (host) |
675 | i = rmtread(&tbf[rd], cnt); | |
676 | else | |
f78e116c | 677 | #endif |
2532f4a9 | 678 | i = read(mt, &tbf[rd], cnt); |
c8fb0747 KM |
679 | /* |
680 | * Check for mid-tape short read error. | |
2532f4a9 | 681 | * If found, skip rest of buffer and start with the next. |
c8fb0747 | 682 | */ |
2532f4a9 KM |
683 | if (!pipein && numtrec < ntrec && i > 0) { |
684 | dprintf(stdout, "mid-media short read error.\n"); | |
c8fb0747 | 685 | numtrec = ntrec; |
c8fb0747 KM |
686 | } |
687 | /* | |
688 | * Handle partial block read. | |
689 | */ | |
2532f4a9 | 690 | if (i > 0 && i != ntrec * TP_BSIZE) { |
b97e998a | 691 | if (pipein) { |
74025ab9 KM |
692 | rd += i; |
693 | cnt -= i; | |
694 | if (cnt > 0) | |
695 | goto getmore; | |
696 | i = rd; | |
b97e998a | 697 | } else { |
2532f4a9 KM |
698 | /* |
699 | * Short read. Process the blocks read. | |
700 | */ | |
b97e998a | 701 | if (i % TP_BSIZE != 0) |
2532f4a9 KM |
702 | vprintf(stdout, |
703 | "partial block read: %d should be %d\n", | |
704 | i, ntrec * TP_BSIZE); | |
c8fb0747 | 705 | numtrec = i / TP_BSIZE; |
74025ab9 | 706 | } |
b97e998a | 707 | } |
c8fb0747 KM |
708 | /* |
709 | * Handle read error. | |
710 | */ | |
b97e998a KM |
711 | if (i < 0) { |
712 | fprintf(stderr, "Tape read error while "); | |
713 | switch (curfile.action) { | |
714 | default: | |
715 | fprintf(stderr, "trying to set up tape\n"); | |
716 | break; | |
717 | case UNKNOWN: | |
bf7abb47 | 718 | fprintf(stderr, "trying to resynchronize\n"); |
b97e998a KM |
719 | break; |
720 | case USING: | |
721 | fprintf(stderr, "restoring %s\n", curfile.name); | |
722 | break; | |
723 | case SKIP: | |
724 | fprintf(stderr, "skipping over inode %d\n", | |
725 | curfile.ino); | |
726 | break; | |
727 | } | |
728 | if (!yflag && !reply("continue")) | |
729 | done(1); | |
730 | i = ntrec*TP_BSIZE; | |
731 | bzero(tbf, i); | |
e9e7ecc4 | 732 | #ifdef RRESTORE |
2532f4a9 KM |
733 | if (host) |
734 | seek_failed = (rmtseek(i, 1) < 0); | |
735 | else | |
f78e116c | 736 | #endif |
2532f4a9 KM |
737 | seek_failed = (lseek(mt, i, 1) == (long)-1); |
738 | ||
739 | if (seek_failed) { | |
b97e998a KM |
740 | perror("continuation failed"); |
741 | done(1); | |
f78e116c | 742 | } |
b97e998a | 743 | } |
c8fb0747 KM |
744 | /* |
745 | * Handle end of tape. | |
746 | */ | |
b97e998a | 747 | if (i == 0) { |
2532f4a9 | 748 | vprintf(stdout, "End-of-tape encountered\n"); |
ad073f89 KM |
749 | if (!pipein) { |
750 | newvol = volno + 1; | |
751 | volno = 0; | |
c8fb0747 | 752 | numtrec = 0; |
ad073f89 KM |
753 | getvol(newvol); |
754 | readtape(b); | |
f78e116c KM |
755 | return; |
756 | } | |
ad073f89 KM |
757 | if (rd % TP_BSIZE != 0) |
758 | panic("partial block read: %d should be %d\n", | |
759 | rd, ntrec * TP_BSIZE); | |
760 | bcopy((char *)&endoftapemark, &tbf[rd], (long)TP_BSIZE); | |
f78e116c | 761 | } |
c8fb0747 | 762 | bct = 0; |
f78e116c | 763 | bcopy(&tbf[(bct++*TP_BSIZE)], b, (long)TP_BSIZE); |
2cb5dabb | 764 | blksread++; |
f78e116c KM |
765 | } |
766 | ||
b97e998a KM |
767 | findtapeblksize() |
768 | { | |
769 | register long i; | |
770 | ||
771 | for (i = 0; i < ntrec; i++) | |
772 | ((struct s_spcl *)&tbf[i * TP_BSIZE])->c_magic = 0; | |
773 | bct = 0; | |
774 | #ifdef RRESTORE | |
2532f4a9 KM |
775 | if (host) |
776 | i = rmtread(tbf, ntrec * TP_BSIZE); | |
777 | else | |
b97e998a | 778 | #endif |
2532f4a9 KM |
779 | i = read(mt, tbf, ntrec * TP_BSIZE); |
780 | ||
b97e998a KM |
781 | if (i <= 0) { |
782 | perror("Tape read error"); | |
783 | done(1); | |
784 | } | |
785 | if (i % TP_BSIZE != 0) { | |
786 | fprintf(stderr, "Tape block size (%d) %s (%d)\n", | |
787 | i, "is not a multiple of dump block size", TP_BSIZE); | |
788 | done(1); | |
789 | } | |
790 | ntrec = i / TP_BSIZE; | |
c8fb0747 | 791 | numtrec = ntrec; |
b97e998a KM |
792 | vprintf(stdout, "Tape block size is %d\n", ntrec); |
793 | } | |
794 | ||
f78e116c KM |
795 | flsht() |
796 | { | |
797 | ||
19230a53 | 798 | bct = ntrec+1; |
f78e116c KM |
799 | } |
800 | ||
f78e116c KM |
801 | closemt() |
802 | { | |
803 | if (mt < 0) | |
804 | return; | |
e9e7ecc4 | 805 | #ifdef RRESTORE |
2532f4a9 KM |
806 | if (host) |
807 | rmtclose(); | |
808 | else | |
f78e116c | 809 | #endif |
2532f4a9 | 810 | (void) close(mt); |
f78e116c KM |
811 | } |
812 | ||
813 | checkvol(b, t) | |
814 | struct s_spcl *b; | |
815 | long t; | |
816 | { | |
817 | ||
2cb5dabb KM |
818 | if (b->c_volume != t) |
819 | return(FAIL); | |
820 | return(GOOD); | |
f78e116c KM |
821 | } |
822 | ||
823 | readhdr(b) | |
824 | struct s_spcl *b; | |
825 | { | |
826 | ||
5c5f44c7 | 827 | if (gethead(b) == FAIL) { |
768eb687 | 828 | dprintf(stdout, "readhdr fails at %d blocks\n", blksread); |
2cb5dabb | 829 | return(FAIL); |
5c5f44c7 | 830 | } |
2cb5dabb | 831 | return(GOOD); |
f78e116c KM |
832 | } |
833 | ||
834 | /* | |
835 | * read the tape into buf, then return whether or | |
836 | * or not it is a header block. | |
837 | */ | |
838 | gethead(buf) | |
839 | struct s_spcl *buf; | |
840 | { | |
eb317d51 | 841 | long i; |
f78e116c KM |
842 | union u_ospcl { |
843 | char dummy[TP_BSIZE]; | |
844 | struct s_ospcl { | |
2cb5dabb KM |
845 | long c_type; |
846 | long c_date; | |
847 | long c_ddate; | |
848 | long c_volume; | |
849 | long c_tapea; | |
cf6db0ab | 850 | u_short c_inumber; |
2cb5dabb KM |
851 | long c_magic; |
852 | long c_checksum; | |
f78e116c KM |
853 | struct odinode { |
854 | unsigned short odi_mode; | |
cf6db0ab KM |
855 | u_short odi_nlink; |
856 | u_short odi_uid; | |
857 | u_short odi_gid; | |
2cb5dabb KM |
858 | long odi_size; |
859 | long odi_rdev; | |
f78e116c | 860 | char odi_addr[36]; |
2cb5dabb KM |
861 | long odi_atime; |
862 | long odi_mtime; | |
863 | long odi_ctime; | |
f78e116c | 864 | } c_dinode; |
2cb5dabb KM |
865 | long c_count; |
866 | char c_addr[256]; | |
f78e116c KM |
867 | } s_ospcl; |
868 | } u_ospcl; | |
869 | ||
870 | if (!cvtflag) { | |
871 | readtape((char *)buf); | |
b4c41341 KS |
872 | if (buf->c_magic != NFS_MAGIC) { |
873 | if (swabl(buf->c_magic) != NFS_MAGIC) | |
874 | return (FAIL); | |
875 | if (!Bcvt) { | |
876 | vprintf(stdout, "Note: Doing Byte swapping\n"); | |
877 | Bcvt = 1; | |
878 | } | |
879 | } | |
880 | if (checksum((int *)buf) == FAIL) | |
881 | return (FAIL); | |
882 | if (Bcvt) | |
883 | swabst("8l4s31l", (char *)buf); | |
5c5f44c7 | 884 | goto good; |
f78e116c KM |
885 | } |
886 | readtape((char *)(&u_ospcl.s_ospcl)); | |
887 | bzero((char *)buf, (long)TP_BSIZE); | |
888 | buf->c_type = u_ospcl.s_ospcl.c_type; | |
889 | buf->c_date = u_ospcl.s_ospcl.c_date; | |
890 | buf->c_ddate = u_ospcl.s_ospcl.c_ddate; | |
891 | buf->c_volume = u_ospcl.s_ospcl.c_volume; | |
892 | buf->c_tapea = u_ospcl.s_ospcl.c_tapea; | |
893 | buf->c_inumber = u_ospcl.s_ospcl.c_inumber; | |
894 | buf->c_checksum = u_ospcl.s_ospcl.c_checksum; | |
895 | buf->c_magic = u_ospcl.s_ospcl.c_magic; | |
896 | buf->c_dinode.di_mode = u_ospcl.s_ospcl.c_dinode.odi_mode; | |
897 | buf->c_dinode.di_nlink = u_ospcl.s_ospcl.c_dinode.odi_nlink; | |
898 | buf->c_dinode.di_uid = u_ospcl.s_ospcl.c_dinode.odi_uid; | |
899 | buf->c_dinode.di_gid = u_ospcl.s_ospcl.c_dinode.odi_gid; | |
900 | buf->c_dinode.di_size = u_ospcl.s_ospcl.c_dinode.odi_size; | |
901 | buf->c_dinode.di_rdev = u_ospcl.s_ospcl.c_dinode.odi_rdev; | |
902 | buf->c_dinode.di_atime = u_ospcl.s_ospcl.c_dinode.odi_atime; | |
903 | buf->c_dinode.di_mtime = u_ospcl.s_ospcl.c_dinode.odi_mtime; | |
904 | buf->c_dinode.di_ctime = u_ospcl.s_ospcl.c_dinode.odi_ctime; | |
905 | buf->c_count = u_ospcl.s_ospcl.c_count; | |
2cb5dabb | 906 | bcopy(u_ospcl.s_ospcl.c_addr, buf->c_addr, (long)256); |
f78e116c | 907 | if (u_ospcl.s_ospcl.c_magic != OFS_MAGIC || |
5c5f44c7 | 908 | checksum((int *)(&u_ospcl.s_ospcl)) == FAIL) |
2cb5dabb | 909 | return(FAIL); |
f78e116c | 910 | buf->c_magic = NFS_MAGIC; |
5c5f44c7 KM |
911 | |
912 | good: | |
b4c41341 | 913 | if (buf->c_dinode.di_size == 0 && |
025e61b9 KM |
914 | (buf->c_dinode.di_mode & IFMT) == IFDIR && Qcvt == 0) { |
915 | if (buf->c_dinode.di_qsize.val[0] || | |
916 | buf->c_dinode.di_qsize.val[1]) { | |
b4c41341 KS |
917 | printf("Note: Doing Quad swapping\n"); |
918 | Qcvt = 1; | |
919 | } | |
920 | } | |
921 | if (Qcvt) { | |
025e61b9 KM |
922 | i = buf->c_dinode.di_qsize.val[1]; |
923 | buf->c_dinode.di_qsize.val[1] = buf->c_dinode.di_qsize.val[0]; | |
924 | buf->c_dinode.di_qsize.val[0] = i; | |
b4c41341 | 925 | } |
2532f4a9 | 926 | |
5c5f44c7 KM |
927 | switch (buf->c_type) { |
928 | ||
929 | case TS_CLRI: | |
930 | case TS_BITS: | |
931 | /* | |
932 | * Have to patch up missing information in bit map headers | |
933 | */ | |
934 | buf->c_inumber = 0; | |
935 | buf->c_dinode.di_size = buf->c_count * TP_BSIZE; | |
936 | for (i = 0; i < buf->c_count; i++) | |
937 | buf->c_addr[i]++; | |
938 | break; | |
939 | ||
940 | case TS_TAPE: | |
941 | case TS_END: | |
942 | buf->c_inumber = 0; | |
943 | break; | |
944 | ||
945 | case TS_INODE: | |
946 | case TS_ADDR: | |
947 | break; | |
948 | ||
949 | default: | |
950 | panic("gethead: unknown inode type %d\n", buf->c_type); | |
951 | break; | |
952 | } | |
2cb5dabb KM |
953 | if (dflag) |
954 | accthdr(buf); | |
955 | return(GOOD); | |
956 | } | |
957 | ||
958 | /* | |
959 | * Check that a header is where it belongs and predict the next header | |
960 | */ | |
961 | accthdr(header) | |
962 | struct s_spcl *header; | |
963 | { | |
7851e15d | 964 | static ino_t previno = 0x7fffffff; |
2cb5dabb KM |
965 | static int prevtype; |
966 | static long predict; | |
967 | long blks, i; | |
968 | ||
8d412b7c | 969 | if (header->c_type == TS_TAPE) { |
5c5f44c7 | 970 | fprintf(stderr, "Volume header\n"); |
b8f4e820 | 971 | previno = 0x7fffffff; |
5c5f44c7 KM |
972 | return; |
973 | } | |
7851e15d | 974 | if (previno == 0x7fffffff) |
2cb5dabb KM |
975 | goto newcalc; |
976 | switch (prevtype) { | |
2cb5dabb | 977 | case TS_BITS: |
5c5f44c7 | 978 | fprintf(stderr, "Dump mask header"); |
2cb5dabb KM |
979 | break; |
980 | case TS_CLRI: | |
5c5f44c7 | 981 | fprintf(stderr, "Remove mask header"); |
2cb5dabb KM |
982 | break; |
983 | case TS_INODE: | |
5c5f44c7 | 984 | fprintf(stderr, "File header, ino %d", previno); |
2cb5dabb KM |
985 | break; |
986 | case TS_ADDR: | |
5c5f44c7 | 987 | fprintf(stderr, "File continuation header, ino %d", previno); |
2cb5dabb KM |
988 | break; |
989 | case TS_END: | |
5c5f44c7 | 990 | fprintf(stderr, "End of tape header"); |
2cb5dabb KM |
991 | break; |
992 | } | |
2cb5dabb KM |
993 | if (predict != blksread - 1) |
994 | fprintf(stderr, "; predicted %d blocks, got %d blocks", | |
995 | predict, blksread - 1); | |
996 | fprintf(stderr, "\n"); | |
997 | newcalc: | |
998 | blks = 0; | |
5c5f44c7 | 999 | if (header->c_type != TS_END) |
2cb5dabb KM |
1000 | for (i = 0; i < header->c_count; i++) |
1001 | if (header->c_addr[i] != 0) | |
1002 | blks++; | |
1003 | predict = blks; | |
1004 | blksread = 0; | |
1005 | prevtype = header->c_type; | |
1006 | previno = header->c_inumber; | |
f78e116c KM |
1007 | } |
1008 | ||
1009 | /* | |
1010 | * Find an inode header. | |
1011 | * Complain if had to skip, and complain is set. | |
1012 | */ | |
b32320ae | 1013 | findinode(header) |
f78e116c | 1014 | struct s_spcl *header; |
f78e116c | 1015 | { |
2cb5dabb | 1016 | static long skipcnt = 0; |
b8f4e820 KM |
1017 | long i; |
1018 | char buf[TP_BSIZE]; | |
f78e116c KM |
1019 | |
1020 | curfile.name = "<name unknown>"; | |
1021 | curfile.action = UNKNOWN; | |
1022 | curfile.dip = (struct dinode *)NIL; | |
1023 | curfile.ino = 0; | |
2cb5dabb KM |
1024 | if (ishead(header) == FAIL) { |
1025 | skipcnt++; | |
7702e9a8 | 1026 | while (gethead(header) == FAIL || header->c_date != dumpdate) |
f78e116c | 1027 | skipcnt++; |
2cb5dabb | 1028 | } |
f78e116c | 1029 | for (;;) { |
b8f4e820 KM |
1030 | if (checktype(header, TS_ADDR) == GOOD) { |
1031 | /* | |
1032 | * Skip up to the beginning of the next record | |
1033 | */ | |
1034 | for (i = 0; i < header->c_count; i++) | |
1035 | if (header->c_addr[i]) | |
1036 | readtape(buf); | |
1037 | (void) gethead(header); | |
1038 | continue; | |
1039 | } | |
2cb5dabb | 1040 | if (checktype(header, TS_INODE) == GOOD) { |
f78e116c KM |
1041 | curfile.dip = &header->c_dinode; |
1042 | curfile.ino = header->c_inumber; | |
1043 | break; | |
1044 | } | |
2cb5dabb | 1045 | if (checktype(header, TS_END) == GOOD) { |
f78e116c KM |
1046 | curfile.ino = maxino; |
1047 | break; | |
1048 | } | |
2cb5dabb | 1049 | if (checktype(header, TS_CLRI) == GOOD) { |
f78e116c | 1050 | curfile.name = "<file removal list>"; |
e108d3a2 | 1051 | break; |
f78e116c | 1052 | } |
2cb5dabb | 1053 | if (checktype(header, TS_BITS) == GOOD) { |
f78e116c | 1054 | curfile.name = "<file dump list>"; |
e108d3a2 | 1055 | break; |
f78e116c | 1056 | } |
2cb5dabb | 1057 | while (gethead(header) == FAIL) |
f78e116c KM |
1058 | skipcnt++; |
1059 | } | |
b32320ae | 1060 | if (skipcnt > 0) |
dd1900f1 | 1061 | fprintf(stderr, "resync restore, skipped %d blocks\n", skipcnt); |
f78e116c KM |
1062 | skipcnt = 0; |
1063 | } | |
1064 | ||
1065 | /* | |
1066 | * return whether or not the buffer contains a header block | |
1067 | */ | |
1068 | ishead(buf) | |
1069 | struct s_spcl *buf; | |
1070 | { | |
1071 | ||
1072 | if (buf->c_magic != NFS_MAGIC) | |
2cb5dabb KM |
1073 | return(FAIL); |
1074 | return(GOOD); | |
f78e116c KM |
1075 | } |
1076 | ||
1077 | checktype(b, t) | |
1078 | struct s_spcl *b; | |
1079 | int t; | |
1080 | { | |
1081 | ||
2cb5dabb KM |
1082 | if (b->c_type != t) |
1083 | return(FAIL); | |
1084 | return(GOOD); | |
f78e116c KM |
1085 | } |
1086 | ||
1087 | checksum(b) | |
1088 | register int *b; | |
1089 | { | |
1090 | register int i, j; | |
1091 | ||
1092 | j = sizeof(union u_spcl) / sizeof(int); | |
1093 | i = 0; | |
b4c41341 KS |
1094 | if(!Bcvt) { |
1095 | do | |
1096 | i += *b++; | |
1097 | while (--j); | |
1098 | } else { | |
1099 | /* What happens if we want to read restore tapes | |
1100 | for a 16bit int machine??? */ | |
1101 | do | |
1102 | i += swabl(*b++); | |
1103 | while (--j); | |
1104 | } | |
1105 | ||
f78e116c KM |
1106 | if (i != CHECKSUM) { |
1107 | fprintf(stderr, "Checksum error %o, inode %d file %s\n", i, | |
1108 | curfile.ino, curfile.name); | |
2cb5dabb | 1109 | return(FAIL); |
f78e116c | 1110 | } |
2cb5dabb | 1111 | return(GOOD); |
f78e116c KM |
1112 | } |
1113 | ||
e9e7ecc4 | 1114 | #ifdef RRESTORE |
74025ab9 | 1115 | /* VARARGS1 */ |
f78e116c KM |
1116 | msg(cp, a1, a2, a3) |
1117 | char *cp; | |
1118 | { | |
1119 | ||
1120 | fprintf(stderr, cp, a1, a2, a3); | |
1121 | } | |
2532f4a9 | 1122 | #endif /* RRESTORE */ |
b4c41341 | 1123 | |
025e61b9 KM |
1124 | u_char * |
1125 | swabshort(sp, n) | |
1126 | register u_char *sp; | |
1127 | register int n; | |
1128 | { | |
1129 | char c; | |
1130 | ||
1131 | while (--n >= 0) { | |
1132 | c = sp[0]; sp[0] = sp[1]; sp[1] = c; | |
1133 | sp += 2; | |
1134 | } | |
1135 | return (sp); | |
1136 | } | |
1137 | ||
1138 | u_char * | |
1139 | swablong(sp, n) | |
1140 | register u_char *sp; | |
1141 | register int n; | |
1142 | { | |
1143 | char c; | |
1144 | ||
1145 | while (--n >= 0) { | |
1146 | c = sp[0]; sp[0] = sp[3]; sp[3] = c; | |
1147 | c = sp[2]; sp[2] = sp[1]; sp[1] = c; | |
1148 | sp += 4; | |
1149 | } | |
1150 | return (sp); | |
1151 | } | |
1152 | ||
b4c41341 | 1153 | swabst(cp, sp) |
025e61b9 | 1154 | register u_char *cp, *sp; |
b4c41341 KS |
1155 | { |
1156 | int n = 0; | |
025e61b9 KM |
1157 | u_char c; |
1158 | ||
1159 | while (*cp) { | |
b4c41341 KS |
1160 | switch (*cp) { |
1161 | case '0': case '1': case '2': case '3': case '4': | |
1162 | case '5': case '6': case '7': case '8': case '9': | |
1163 | n = (n * 10) + (*cp++ - '0'); | |
1164 | continue; | |
1165 | ||
1166 | case 's': case 'w': case 'h': | |
025e61b9 KM |
1167 | if (n == 0) |
1168 | n = 1; | |
1169 | sp = swabshort(sp, n); | |
b4c41341 KS |
1170 | break; |
1171 | ||
1172 | case 'l': | |
025e61b9 KM |
1173 | if (n == 0) |
1174 | n = 1; | |
1175 | sp = swablong(sp, n); | |
1176 | break; | |
1177 | ||
1178 | default: /* Any other character, like 'b' counts as byte. */ | |
1179 | if (n == 0) | |
1180 | n = 1; | |
1181 | sp += n; | |
1182 | break; | |
b4c41341 | 1183 | } |
025e61b9 KM |
1184 | cp++; |
1185 | n = 0; | |
b4c41341 KS |
1186 | } |
1187 | } | |
025e61b9 KM |
1188 | |
1189 | u_long | |
1190 | swabl(x) | |
1191 | u_long x; | |
1192 | { | |
1193 | swabst("l", (char *)&x); | |
1194 | return (x); | |
1195 | } |