Commit | Line | Data |
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c4f36ac6 WJ |
1 | /* Diff files from a tar archive. |
2 | Copyright (C) 1988 Free Software Foundation | |
3 | ||
4 | This file is part of GNU Tar. | |
5 | ||
6 | GNU Tar is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 1, or (at your option) | |
9 | any later version. | |
10 | ||
11 | GNU Tar is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GNU Tar; see the file COPYING. If not, write to | |
18 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
19 | ||
20 | /* | |
21 | * Diff files from a tar archive. | |
22 | * | |
23 | * Written 30 April 1987 by John Gilmore, ihnp4!hoptoad!gnu. | |
24 | * | |
25 | * @(#) diffarch.c 1.10 87/11/11 - gnu | |
26 | */ | |
27 | ||
28 | #include <stdio.h> | |
29 | #include <errno.h> | |
30 | #include <sys/types.h> | |
31 | #include <sys/stat.h> | |
32 | ||
33 | #ifdef BSD42 | |
34 | #include <sys/file.h> | |
35 | #endif | |
36 | ||
37 | #ifndef MSDOS | |
38 | #include <sys/ioctl.h> | |
39 | #if !defined(USG) || defined(HAVE_MTIO) | |
40 | #include <sys/mtio.h> | |
41 | #endif | |
42 | #endif | |
43 | ||
44 | #ifdef USG | |
45 | #include <fcntl.h> | |
46 | #endif | |
47 | ||
48 | /* Some systems don't have these #define's -- we fake it here. */ | |
49 | #ifndef O_RDONLY | |
50 | #define O_RDONLY 0 | |
51 | #endif | |
52 | #ifndef O_NDELAY | |
53 | #define O_NDELAY 0 | |
54 | #endif | |
55 | ||
56 | #ifndef S_IFLNK | |
57 | #define lstat stat | |
58 | #endif | |
59 | ||
60 | extern int errno; /* From libc.a */ | |
61 | extern char *valloc(); /* From libc.a */ | |
62 | ||
63 | #include "tar.h" | |
64 | #include "port.h" | |
65 | #include "rmt.h" | |
66 | ||
67 | extern union record *head; /* Points to current tape header */ | |
68 | extern struct stat hstat; /* Stat struct corresponding */ | |
69 | extern int head_standard; /* Tape header is in ANSI format */ | |
70 | ||
71 | extern void print_header(); | |
72 | extern void skip_file(); | |
73 | extern void skip_extended_headers(); | |
74 | ||
75 | extern FILE *msg_file; | |
76 | ||
77 | int now_verifying = 0; /* Are we verifying at the moment? */ | |
78 | ||
79 | int diff_fd; /* Descriptor of file we're diffing */ | |
80 | ||
81 | char *diff_buf = 0; /* Pointer to area for reading | |
82 | file contents into */ | |
83 | ||
84 | char *diff_dir; /* Directory contents for LF_DUMPDIR */ | |
85 | ||
86 | int different = 0; | |
87 | ||
88 | /*struct sp_array *sparsearray; | |
89 | int sp_ar_size = 10;*/ | |
90 | /* | |
91 | * Initialize for a diff operation | |
92 | */ | |
93 | diff_init() | |
94 | { | |
95 | ||
96 | /*NOSTRICT*/ | |
97 | diff_buf = (char *) valloc((unsigned)blocksize); | |
98 | if (!diff_buf) { | |
99 | msg("could not allocate memory for diff buffer of %d bytes", | |
100 | blocksize); | |
101 | exit(EX_ARGSBAD); | |
102 | } | |
103 | } | |
104 | ||
105 | /* | |
106 | * Diff a file against the archive. | |
107 | */ | |
108 | void | |
109 | diff_archive() | |
110 | { | |
111 | register char *data; | |
112 | int check, namelen; | |
113 | int err; | |
114 | long offset; | |
115 | struct stat filestat; | |
116 | int compare_chunk(); | |
117 | int compare_dir(); | |
118 | #ifndef __MSDOS__ | |
119 | dev_t dev; | |
120 | ino_t ino; | |
121 | #endif | |
122 | char *get_dir_contents(); | |
123 | long from_oct(); | |
124 | long lseek(); | |
125 | ||
126 | errno = EPIPE; /* FIXME, remove perrors */ | |
127 | ||
128 | saverec(&head); /* Make sure it sticks around */ | |
129 | userec(head); /* And go past it in the archive */ | |
130 | decode_header(head, &hstat, &head_standard, 1); /* Snarf fields */ | |
131 | ||
132 | /* Print the record from 'head' and 'hstat' */ | |
133 | if (f_verbose) { | |
134 | if(now_verifying) | |
135 | fprintf(msg_file,"Verify "); | |
136 | print_header(); | |
137 | } | |
138 | ||
139 | switch (head->header.linkflag) { | |
140 | ||
141 | default: | |
142 | msg("Unknown file type '%c' for %s, diffed as normal file", | |
143 | head->header.linkflag, head->header.name); | |
144 | /* FALL THRU */ | |
145 | ||
146 | case LF_OLDNORMAL: | |
147 | case LF_NORMAL: | |
148 | case LF_SPARSE: | |
149 | case LF_CONTIG: | |
150 | /* | |
151 | * Appears to be a file. | |
152 | * See if it's really a directory. | |
153 | */ | |
154 | namelen = strlen(head->header.name)-1; | |
155 | if (head->header.name[namelen] == '/') | |
156 | goto really_dir; | |
157 | ||
158 | ||
159 | if(do_stat(&filestat)) { | |
160 | if (head->header.isextended) | |
161 | skip_extended_headers(); | |
162 | skip_file((long)hstat.st_size); | |
163 | different++; | |
164 | goto quit; | |
165 | } | |
166 | ||
167 | if ((filestat.st_mode & S_IFMT) != S_IFREG) { | |
168 | fprintf(msg_file, "%s: not a regular file\n", | |
169 | head->header.name); | |
170 | skip_file((long)hstat.st_size); | |
171 | different++; | |
172 | goto quit; | |
173 | } | |
174 | ||
175 | filestat.st_mode &= ~S_IFMT; | |
176 | if (filestat.st_mode != hstat.st_mode) | |
177 | sigh("mode"); | |
178 | if (filestat.st_uid != hstat.st_uid) | |
179 | sigh("uid"); | |
180 | if (filestat.st_gid != hstat.st_gid) | |
181 | sigh("gid"); | |
182 | if (filestat.st_mtime != hstat.st_mtime) | |
183 | sigh("mod time"); | |
184 | if (head->header.linkflag != LF_SPARSE && | |
185 | filestat.st_size != hstat.st_size) { | |
186 | sigh("size"); | |
187 | skip_file((long)hstat.st_size); | |
188 | goto quit; | |
189 | } | |
190 | ||
191 | diff_fd = open(head->header.name, O_NDELAY|O_RDONLY); | |
192 | ||
193 | if (diff_fd < 0 && !f_absolute_paths) { | |
194 | char tmpbuf[NAMSIZ+2]; | |
195 | ||
196 | tmpbuf[0]='/'; | |
197 | strcpy(&tmpbuf[1],head->header.name); | |
198 | diff_fd=open(tmpbuf, O_NDELAY|O_RDONLY); | |
199 | } | |
200 | if (diff_fd < 0) { | |
201 | msg_perror("cannot open %s",head->header.name); | |
202 | if (head->header.isextended) | |
203 | skip_extended_headers(); | |
204 | skip_file((long)hstat.st_size); | |
205 | different++; | |
206 | goto quit; | |
207 | } | |
208 | /* | |
209 | * Need to treat sparse files completely differently here. | |
210 | */ | |
211 | if (head->header.linkflag == LF_SPARSE) | |
212 | diff_sparse_files(hstat.st_size); | |
213 | else | |
214 | wantbytes((long)(hstat.st_size),compare_chunk); | |
215 | ||
216 | check = close(diff_fd); | |
217 | if (check < 0) | |
218 | msg_perror("Error while closing %s",head->header.name); | |
219 | ||
220 | quit: | |
221 | break; | |
222 | ||
223 | #ifndef __MSDOS__ | |
224 | case LF_LINK: | |
225 | if(do_stat(&filestat)) | |
226 | break; | |
227 | dev = filestat.st_dev; | |
228 | ino = filestat.st_ino; | |
229 | err = stat(head->header.linkname, &filestat); | |
230 | if (err < 0) { | |
231 | if (errno==ENOENT) { | |
232 | fprintf(msg_file, "%s: does not exist\n",head->header.name); | |
233 | } else { | |
234 | msg_perror("cannot stat file %s",head->header.name); | |
235 | } | |
236 | different++; | |
237 | break; | |
238 | } | |
239 | if(filestat.st_dev!=dev || filestat.st_ino!=ino) { | |
240 | fprintf(msg_file, "%s not linked to %s\n",head->header.name,head->header.linkname); | |
241 | break; | |
242 | } | |
243 | break; | |
244 | #endif | |
245 | ||
246 | #ifdef S_IFLNK | |
247 | case LF_SYMLINK: | |
248 | { | |
249 | char linkbuf[NAMSIZ+3]; | |
250 | check = readlink(head->header.name, linkbuf, | |
251 | (sizeof linkbuf)-1); | |
252 | ||
253 | if (check < 0) { | |
254 | if (errno == ENOENT) { | |
255 | fprintf(msg_file, | |
256 | "%s: no such file or directory\n", | |
257 | head->header.name); | |
258 | } else { | |
259 | msg_perror("cannot read link %s",head->header.name); | |
260 | } | |
261 | different++; | |
262 | break; | |
263 | } | |
264 | ||
265 | linkbuf[check] = '\0'; /* Null-terminate it */ | |
266 | if (strncmp(head->header.linkname, linkbuf, check) != 0) { | |
267 | fprintf(msg_file, "%s: symlink differs\n", | |
268 | head->header.linkname); | |
269 | different++; | |
270 | } | |
271 | } | |
272 | break; | |
273 | #endif | |
274 | ||
275 | case LF_CHR: | |
276 | hstat.st_mode |= S_IFCHR; | |
277 | goto check_node; | |
278 | ||
279 | #ifdef S_IFBLK | |
280 | /* If local system doesn't support block devices, use default case */ | |
281 | case LF_BLK: | |
282 | hstat.st_mode |= S_IFBLK; | |
283 | goto check_node; | |
284 | #endif | |
285 | ||
286 | #ifdef S_IFIFO | |
287 | /* If local system doesn't support FIFOs, use default case */ | |
288 | case LF_FIFO: | |
289 | hstat.st_mode |= S_IFIFO; | |
290 | hstat.st_rdev = 0; /* FIXME, do we need this? */ | |
291 | goto check_node; | |
292 | #endif | |
293 | ||
294 | check_node: | |
295 | /* FIXME, deal with umask */ | |
296 | if(do_stat(&filestat)) | |
297 | break; | |
298 | if(hstat.st_rdev != filestat.st_rdev) { | |
299 | fprintf(msg_file, "%s: device numbers changed\n", head->header.name); | |
300 | different++; | |
301 | break; | |
302 | } | |
303 | if(hstat.st_mode != filestat.st_mode) { | |
304 | fprintf(msg_file, "%s: mode or device-type changed\n", head->header.name); | |
305 | different++; | |
306 | break; | |
307 | } | |
308 | break; | |
309 | ||
310 | case LF_DUMPDIR: | |
311 | data=diff_dir=get_dir_contents(head->header.name,0); | |
312 | wantbytes((long)(hstat.st_size),compare_dir); | |
313 | free(data); | |
314 | /* FALL THROUGH */ | |
315 | ||
316 | case LF_DIR: | |
317 | /* Check for trailing / */ | |
318 | namelen = strlen(head->header.name)-1; | |
319 | really_dir: | |
320 | while (namelen && head->header.name[namelen] == '/') | |
321 | head->header.name[namelen--] = '\0'; /* Zap / */ | |
322 | ||
323 | if(do_stat(&filestat)) | |
324 | break; | |
325 | if((filestat.st_mode&S_IFMT)!=S_IFDIR) { | |
326 | fprintf(msg_file, "%s is no longer a directory\n",head->header.name); | |
327 | different++; | |
328 | break; | |
329 | } | |
330 | if((filestat.st_mode&~S_IFMT) != hstat.st_mode) | |
331 | sigh("mode"); | |
332 | break; | |
333 | ||
334 | case LF_VOLHDR: | |
335 | break; | |
336 | ||
337 | case LF_MULTIVOL: | |
338 | namelen = strlen(head->header.name)-1; | |
339 | if (head->header.name[namelen] == '/') | |
340 | goto really_dir; | |
341 | ||
342 | if(do_stat(&filestat)) | |
343 | break; | |
344 | ||
345 | if ((filestat.st_mode & S_IFMT) != S_IFREG) { | |
346 | fprintf(msg_file, "%s: not a regular file\n", | |
347 | head->header.name); | |
348 | skip_file((long)hstat.st_size); | |
349 | different++; | |
350 | break; | |
351 | } | |
352 | ||
353 | filestat.st_mode &= ~S_IFMT; | |
354 | offset = from_oct(1+12, head->header.offset); | |
355 | if (filestat.st_size != hstat.st_size + offset) { | |
356 | sigh("size"); | |
357 | skip_file((long)hstat.st_size); | |
358 | different++; | |
359 | break; | |
360 | } | |
361 | ||
362 | diff_fd = open(head->header.name, O_NDELAY|O_RDONLY); | |
363 | ||
364 | if (diff_fd < 0) { | |
365 | msg_perror("cannot open file %s",head->header.name); | |
366 | skip_file((long)hstat.st_size); | |
367 | different++; | |
368 | break; | |
369 | } | |
370 | err = lseek(diff_fd, offset, 0); | |
371 | if(err!=offset) { | |
372 | msg_perror("cannot seek to %ld in file %s",offset,head->header.name); | |
373 | different++; | |
374 | break; | |
375 | } | |
376 | ||
377 | wantbytes((long)(hstat.st_size),compare_chunk); | |
378 | ||
379 | check = close(diff_fd); | |
380 | if (check < 0) { | |
381 | msg_perror("Error while closing %s",head->header.name); | |
382 | } | |
383 | break; | |
384 | ||
385 | } | |
386 | ||
387 | /* We don't need to save it any longer. */ | |
388 | saverec((union record **) 0); /* Unsave it */ | |
389 | } | |
390 | ||
391 | int | |
392 | compare_chunk(bytes,buffer) | |
393 | long bytes; | |
394 | char *buffer; | |
395 | { | |
396 | int err; | |
397 | ||
398 | err=read(diff_fd,diff_buf,bytes); | |
399 | if(err!=bytes) { | |
400 | if(err<0) { | |
401 | msg_perror("can't read %s",head->header.name); | |
402 | } else { | |
403 | fprintf(msg_file,"%s: could only read %d of %d bytes\n",head->header.name,err,bytes); | |
404 | } | |
405 | different++; | |
406 | return -1; | |
407 | } | |
408 | if(bcmp(buffer,diff_buf,bytes)) { | |
409 | fprintf(msg_file, "%s: data differs\n",head->header.name); | |
410 | different++; | |
411 | return -1; | |
412 | } | |
413 | return 0; | |
414 | } | |
415 | ||
416 | int | |
417 | compare_dir(bytes,buffer) | |
418 | long bytes; | |
419 | char *buffer; | |
420 | { | |
421 | if(bcmp(buffer,diff_dir,bytes)) { | |
422 | fprintf(msg_file, "%s: data differs\n",head->header.name); | |
423 | different++; | |
424 | return -1; | |
425 | } | |
426 | diff_dir+=bytes; | |
427 | return 0; | |
428 | } | |
429 | ||
430 | /* | |
431 | * Sigh about something that differs. | |
432 | */ | |
433 | sigh(what) | |
434 | char *what; | |
435 | { | |
436 | ||
437 | fprintf(msg_file, "%s: %s differs\n", | |
438 | head->header.name, what); | |
439 | } | |
440 | ||
441 | verify_volume() | |
442 | { | |
443 | int status; | |
444 | #ifdef MTIOCTOP | |
445 | struct mtop t; | |
446 | int er; | |
447 | #endif | |
448 | ||
449 | if(!diff_buf) | |
450 | diff_init(); | |
451 | #ifdef MTIOCTOP | |
452 | t.mt_op = MTBSF; | |
453 | t.mt_count = 1; | |
454 | if((er=rmtioctl(archive,MTIOCTOP,&t))<0) { | |
455 | if(errno!=EIO || (er=rmtioctl(archive,MTIOCTOP,&t))<0) { | |
456 | #endif | |
457 | if(rmtlseek(archive,0L,0)!=0) { | |
458 | /* Lseek failed. Try a different method */ | |
459 | msg_perror("Couldn't rewind archive file for verify"); | |
460 | return; | |
461 | } | |
462 | #ifdef MTIOCTOP | |
463 | } | |
464 | } | |
465 | #endif | |
466 | ar_reading=1; | |
467 | now_verifying = 1; | |
468 | fl_read(); | |
469 | for(;;) { | |
470 | status = read_header(); | |
471 | if(status==0) { | |
472 | unsigned n; | |
473 | ||
474 | n=0; | |
475 | do { | |
476 | n++; | |
477 | status=read_header(); | |
478 | } while(status==0); | |
479 | msg("VERIFY FAILURE: %d invalid header%s detected!",n,n==1?"":"s"); | |
480 | } | |
481 | if(status==2 || status==EOF) | |
482 | break; | |
483 | diff_archive(); | |
484 | } | |
485 | ar_reading=0; | |
486 | now_verifying = 0; | |
487 | ||
488 | } | |
489 | ||
490 | int do_stat(statp) | |
491 | struct stat *statp; | |
492 | { | |
493 | int err; | |
494 | ||
495 | err = f_follow_links ? stat(head->header.name, statp) : lstat(head->header.name, statp); | |
496 | if (err < 0) { | |
497 | if (errno==ENOENT) { | |
498 | fprintf(msg_file, "%s: does not exist\n",head->header.name); | |
499 | } else | |
500 | msg_perror("can't stat file %s",head->header.name); | |
501 | /* skip_file((long)hstat.st_size); | |
502 | different++;*/ | |
503 | return 1; | |
504 | } else | |
505 | return 0; | |
506 | } | |
507 | ||
508 | /* | |
509 | * JK | |
510 | * Diff'ing a sparse file with its counterpart on the tar file is a | |
511 | * bit of a different story than a normal file. First, we must know | |
512 | * what areas of the file to skip through, i.e., we need to contruct | |
513 | * a sparsearray, which will hold all the information we need. We must | |
514 | * compare small amounts of data at a time as we find it. | |
515 | */ | |
516 | ||
517 | diff_sparse_files(filesize) | |
518 | int filesize; | |
519 | ||
520 | { | |
521 | int sparse_ind = 0; | |
522 | char *buf; | |
523 | int buf_size = RECORDSIZE; | |
524 | union record *datarec; | |
525 | int err; | |
526 | long numbytes; | |
527 | int amt_read = 0; | |
528 | int size = filesize; | |
529 | ||
530 | buf = (char *) malloc(buf_size * sizeof (char)); | |
531 | ||
532 | fill_in_sparse_array(); | |
533 | ||
534 | ||
535 | while (size > 0) { | |
536 | datarec = findrec(); | |
537 | if (!sparsearray[sparse_ind].numbytes) | |
538 | break; | |
539 | ||
540 | /* | |
541 | * 'numbytes' is nicer to write than | |
542 | * 'sparsearray[sparse_ind].numbytes' all the time ... | |
543 | */ | |
544 | numbytes = sparsearray[sparse_ind].numbytes; | |
545 | ||
546 | lseek(diff_fd, sparsearray[sparse_ind].offset, 0); | |
547 | /* | |
548 | * take care to not run out of room in our buffer | |
549 | */ | |
550 | while (buf_size < numbytes) { | |
551 | buf = (char *) realloc(buf, buf_size * 2 * sizeof(char)); | |
552 | buf_size *= 2; | |
553 | } | |
554 | while (numbytes > RECORDSIZE) { | |
555 | if ((err = read(diff_fd, buf, RECORDSIZE)) != RECORDSIZE) { | |
556 | if (err < 0) | |
557 | msg_perror("can't read %s", head->header.name); | |
558 | else | |
559 | fprintf(msg_file, "%s: could only read %d of %d bytes\n", | |
560 | err, numbytes); | |
561 | break; | |
562 | } | |
563 | if (bcmp(buf, datarec->charptr, RECORDSIZE)) { | |
564 | different++; | |
565 | break; | |
566 | } | |
567 | numbytes -= err; | |
568 | size -= err; | |
569 | userec(datarec); | |
570 | datarec = findrec(); | |
571 | } | |
572 | if ((err = read(diff_fd, buf, numbytes)) != numbytes) { | |
573 | if (err < 0) | |
574 | msg_perror("can't read %s", head->header.name); | |
575 | else | |
576 | fprintf(msg_file, "%s: could only read %d of %d bytes\n", | |
577 | err, numbytes); | |
578 | break; | |
579 | } | |
580 | ||
581 | if (bcmp(buf, datarec->charptr, numbytes)) { | |
582 | different++; | |
583 | break; | |
584 | } | |
585 | /* amt_read += numbytes; | |
586 | if (amt_read >= RECORDSIZE) { | |
587 | amt_read = 0; | |
588 | userec(datarec); | |
589 | datarec = findrec(); | |
590 | }*/ | |
591 | userec(datarec); | |
592 | sparse_ind++; | |
593 | size -= numbytes; | |
594 | } | |
595 | /* | |
596 | * if the number of bytes read isn't the | |
597 | * number of bytes supposedly in the file, | |
598 | * they're different | |
599 | */ | |
600 | /* if (amt_read != filesize) | |
601 | different++;*/ | |
602 | userec(datarec); | |
603 | free(sparsearray); | |
604 | if (different) | |
605 | fprintf(msg_file, "%s: data differs\n", head->header.name); | |
606 | ||
607 | } | |
608 | ||
609 | /* | |
610 | * JK | |
611 | * This routine should be used more often than it is ... look into | |
612 | * that. Anyhow, what it does is translate the sparse information | |
613 | * on the header, and in any subsequent extended headers, into an | |
614 | * array of structures with true numbers, as opposed to character | |
615 | * strings. It simply makes our life much easier, doing so many | |
616 | * comparisong and such. | |
617 | */ | |
618 | fill_in_sparse_array() | |
619 | { | |
620 | int ind; | |
621 | ||
622 | /* | |
623 | * allocate space for our scratch space; it's initially | |
624 | * 10 elements long, but can change in this routine if | |
625 | * necessary | |
626 | */ | |
627 | sp_array_size = 10; | |
628 | sparsearray = (struct sp_array *) malloc(sp_array_size * sizeof(struct sp_array)); | |
629 | ||
630 | /* | |
631 | * there are at most five of these structures in the header | |
632 | * itself; read these in first | |
633 | */ | |
634 | for (ind = 0; ind < SPARSE_IN_HDR; ind++) { | |
635 | if (!head->header.sp[ind].numbytes) | |
636 | break; | |
637 | sparsearray[ind].offset = | |
638 | from_oct(1+12, head->header.sp[ind].offset); | |
639 | sparsearray[ind].numbytes = | |
640 | from_oct(1+12, head->header.sp[ind].numbytes); | |
641 | } | |
642 | /* | |
643 | * if the header's extended, we gotta read in exhdr's till | |
644 | * we're done | |
645 | */ | |
646 | if (head->header.isextended) { | |
647 | /* how far into the sparsearray we are 'so far' */ | |
648 | static int so_far_ind = SPARSE_IN_HDR; | |
649 | union record *exhdr; | |
650 | ||
651 | for (;;) { | |
652 | exhdr = findrec(); | |
653 | for (ind = 0; ind < SPARSE_EXT_HDR; ind++) { | |
654 | if (ind+so_far_ind > sp_array_size-1) { | |
655 | /* | |
656 | * we just ran out of room in our | |
657 | * scratch area - realloc it | |
658 | */ | |
659 | sparsearray = (struct sp_array *) | |
660 | realloc(sparsearray, | |
661 | sp_array_size*2*sizeof(struct sp_array)); | |
662 | sp_array_size *= 2; | |
663 | } | |
664 | /* | |
665 | * convert the character strings into longs | |
666 | */ | |
667 | sparsearray[ind+so_far_ind].offset = | |
668 | from_oct(1+12, exhdr->ext_hdr.sp[ind].offset); | |
669 | sparsearray[ind+so_far_ind].numbytes = | |
670 | from_oct(1+12, exhdr->ext_hdr.sp[ind].numbytes); | |
671 | } | |
672 | /* | |
673 | * if this is the last extended header for this | |
674 | * file, we can stop | |
675 | */ | |
676 | if (!exhdr->ext_hdr.isextended) | |
677 | break; | |
678 | else { | |
679 | so_far_ind += SPARSE_EXT_HDR; | |
680 | userec(exhdr); | |
681 | } | |
682 | } | |
683 | /* be sure to skip past the last one */ | |
684 | userec(exhdr); | |
685 | } | |
686 | } |